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"Identification of T-cell epitopes adjacent to neutralizing ..." posted by ~Ray
Posted on 2008-12-29 18:02:21

Peptides deduced from the central hydrophobic region (residues 158–189) of the G protein of bovine and ovine respiratory syncytial virus (RSV) and of human RSV subtypes A and B were synthesized. These peptides were used to develop ELISAs to measure specifically antibodies against these types and subtypes of RSV. We have evaluated the bovine RSV-G peptide in both an indirect ELISA and in a blocking ELISA. Specificity and sensitivity relative to a routine diagnostic ELISA that detects antibodies against the RSV F-protein in bovine sera were 98% and 92% respectively for the indirect peptide-based ELISA and 98% and 98% for the blocking peptide-based ELISA. In paired serum samples rises in antibody titer were detected more frequently with the indirect peptide-based ELISA than with the routine F-ELISA. Furthermore the peptide-based G-ELISAs were able to identify between antibodies against BRSV and HRSV and between those against BRSV and ORSV. In addition the indirect peptide-based ELISA was selective for HRSV subtype A and B antibodies. This study shows that peptides corresponding to the central hydrophobic region of the attachment protein G of several RSVs can be used successfully as antigens in highly specific and sensitive immunoassays. We identified subgroup specific protective epitopes represented by the amino acid regions 174–187 and 171–187 of the G glycoproteins from respiratory syncytial virus (RSV) subgroups A and B. Mice immunized with coupled synthetic peptides corresponding to either the region 174–187 containing a Cys186 → Ser substitution or to the native region 171–187 were completely resistant to RSV infection but only to the respective virus. The protective activities of the peptides 174–187 were dependent on the Cys186 → Ser substitution. In addition a recombinant protein representing the region 125–203 of the A subgroup G glycoprotein expressed in Escherichia coli was capable without further treatment to completely protect animals against RSV subgroup A infection. We show that the combinations of cysteinyl residues (positions 173. 176. 182 and 186) retained within either synthetic peptides or the recombinant protein G Respiratory tract infections caused by viruses have been implicated in the pathogenesis of asthma. Of these respiratory pathogens viruses have been demonstrated to be associated with asthma epidemiologically in at least 3 ways (Fig 1). First during infancy certain viruses undergo been implicated in the inception of the asthmatic phenotype. Genetic susceptibility particularly genes coding for atopic phenotypic characteristics might differentiate at least in part those children who are destined to have persistent wheezing asthma or both later in childhood. back up repeated exposure to infectious viruses in daycare centers or in households with multiple older siblings increases the number of respiratory infections but in doing so it might paradoxically reduce the long-term risk of allergies and asthma through either pre-existing or newly formed alterations in cytokine response profiles. Third in patients with established asthma particularly children viral upper respiratory tract infections play a significant role in producing acute exacerbations of airway obstruction that might result in back up outpatient visits or in hospitalizations. This review ordain bring out available data on respiratory syncytial virus infections and their relationship to asthma inception in childhood. The safety and immunogenicity of purified fusion protein (PFP-2) respiratory syncytial virus (RSV) vaccine was evaluated in a randomized placebo-controlled double-blind chew over of 64 healthy adults over age 60. Vaccination was well tolerated with no significant acute side-effects. Twenty-nine of 33 vaccinees (87%) showed a greater than or equal to fourfold rise in serum IgG to the F protein of RSV at 8 weeks post vaccination. Twenty of 33 vaccine recipients (61%) had a greater than or equal to fourfold rise in serum neutralizing titer to assort A and/or group B RSV. Response to vaccination was inversely correlated with pre-immunization serum neutralizing titers. Active surveillance throughout the ensuing winter identified three RSV infections in the placebo group and none in the vaccine assort. Thus. PFP-2 was found to be safe and immunogenic in healthy older adults. A cold-passaged RSV mutant designated cp-RSV which acquired host range mutations during 52 passages at low temperature in bovine tissue culture was completely attenuated for seropositive adults and children but retained the capacity to create upper respiratory disease in seronegative infants. We sought to introduce additional attenuating mutations such as temperature-sensitive (ts) and small-plaque (sp) mutations into the cp-RSV mutant which is a ts + virus in order to generate a mutant which would be satisfactorily attenuated in seronegative infants and young children. Nine mutants of cp-RSV which had acquired either the ts or small-plaque sp phenotype were generated by chemical mutagenesis with 5-fluorouracil. The two ts mutants with the lowest in vitro shut-off temperature namely the cpts-248 (38°C) and cpts-530 (39°C) mutants were the most restricted of the nine cp-RSV mutant progeny tested for efficiency of replication in Balb/c mice. In seronegative chimpanzees the cpts-248 mutant replicated fourfold less efficiently in the nasopharynx and caused significantly less rhinorrhoea than its cp-RSV parent. The cpts-248 mutant virus like its cp-RSV parent was 1000-fold restricted in replication in the trachea compared with wild-type RSV. Previously another candidate RSV live attenuated vaccine strain a mutant designated ts-1 exhibited some instability of its ts phenotype following replication in susceptible humans or chimpanzees. Hence we sought cp-RSV ts progeny that exhibited a greater degree of stability of the ts phenotype than the prototype ts-1 mutant. The cpts-248 and cpts-530 progeny viruses exhibited a greater degree of stability of the ts phenotype in nude mice than the ts-1 virus and in chimpanzees the former mutant also exhibited a greater stability of its ts phenotype than ts-1. The cpts-248 mutant was immunogenic and induced a high aim of resistance in chimpanzees to subsequent contend with wild-type RSV. The cpts-248 mutant therefore exhibits a set of properties that make it a promising vaccine candidate. These desirable properties of cpts-248 suggest that the mutant should be tested in humans for its suitability in immunoprophylaxis. La protéine F est l'une des plus importante coordinate antigénique du VRS (virus respiratoire syncitial). Deux épitopes B correspondant aux acides aminés 200 à 225 et 255 à 278 ont été définis à l'aide d'un sérum de lapin anti-VRS. Une prolifécircumscribe des lymphocytes T auxiliaires induite par des peptides appartenant à ces séquences a été étudiée chez des souris BALB/c ainsi que chez d'autres souches: SJL. C3H/He. B10-BR et C57BL/6. Deux épitopes T adjacents d'épitopes B précédemment définis ont été identifiés sur les peptides 205–225 et 255–278. De plus le peptide 255–278 s'est montré capable de sensibiliser les lymphocytes T auxiliaires à une immunisation in vitro ultérieure par la protéine F.

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Related article:
http://www.sciencedirect.com/science?_ob=GatewayURL&_origin=IRSSSEARCH&_method=citationSearch&_piikey=S0923251606800221&_version=1&md5=e358c52c43342479f956928d563b26f1

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"Identification of T-cell epitopes adjacent to neutralizing ..." posted by ~Ray
Posted on 2008-12-29 18:02:21

Peptides deduced from the central hydrophobic region (residues 158–189) of the G protein of bovine and ovine respiratory syncytial virus (RSV) and of human RSV subtypes A and B were synthesized. These peptides were used to create ELISAs to measure specifically antibodies against these types and subtypes of RSV. We have evaluated the bovine RSV-G peptide in both an indirect ELISA and in a blocking ELISA. Specificity and sensitivity relative to a routine diagnostic ELISA that detects antibodies against the RSV F-protein in bovine sera were 98% and 92% respectively for the indirect peptide-based ELISA and 98% and 98% for the blocking peptide-based ELISA. In paired serum samples rises in antibody titer were detected more frequently with the indirect peptide-based ELISA than with the routine F-ELISA. Furthermore the peptide-based G-ELISAs were able to identify between antibodies against BRSV and HRSV and between those against BRSV and ORSV. In addition the indirect peptide-based ELISA was selective for HRSV subtype A and B antibodies. This chew over shows that peptides corresponding to the central hydrophobic region of the attachment protein G of several RSVs can be used successfully as antigens in highly specific and sensitive immunoassays. We identified subgroup specific protective epitopes represented by the amino acid regions 174–187 and 171–187 of the G glycoproteins from respiratory syncytial virus (RSV) subgroups A and B. Mice immunized with coupled synthetic peptides corresponding to either the region 174–187 containing a Cys186 → Ser substitution or to the native region 171–187 were completely resistant to RSV infection but only to the respective virus. The protective activities of the peptides 174–187 were dependent on the Cys186 → Ser substitution. In addition a recombinant protein representing the region 125–203 of the A subgroup G glycoprotein expressed in Escherichia coli was capable without further treatment to completely protect animals against RSV subgroup A infection. We show that the combinations of cysteinyl residues (positions 173. 176. 182 and 186) retained within either synthetic peptides or the recombinant protein G Respiratory tract infections caused by viruses have been implicated in the pathogenesis of asthma. Of these respiratory pathogens viruses have been demonstrated to be associated with asthma epidemiologically in at least 3 ways (Fig 1). First during infancy certain viruses undergo been implicated in the inception of the asthmatic phenotype. Genetic susceptibility particularly genes coding for atopic phenotypic characteristics might identify at least in part those children who are destined to have persistent wheezing asthma or both later in childhood. Second repeated exposure to infectious viruses in daycare centers or in households with multiple older siblings increases the number of respiratory infections but in doing so it might paradoxically reduce the long-term risk of allergies and asthma through either pre-existing or newly formed alterations in cytokine response profiles. Third in patients with established asthma particularly children viral upper respiratory tract infections compete a significant role in producing acute exacerbations of airway obstruction that might result in frequent outpatient visits or in hospitalizations. This analyse ordain highlight available data on respiratory syncytial virus infections and their relationship to asthma inception in childhood. The safety and immunogenicity of purified fusion protein (PFP-2) respiratory syncytial virus (RSV) vaccine was evaluated in a randomized placebo-controlled double-blind chew over of 64 healthy adults over age 60. Vaccination was well tolerated with no significant acute side-effects. Twenty-nine of 33 vaccinees (87%) showed a greater than or equal to fourfold rise in serum IgG to the F protein of RSV at 8 weeks post vaccination. Twenty of 33 vaccine recipients (61%) had a greater than or equal to fourfold go in serum neutralizing titer to group A and/or assort B RSV. Response to vaccination was inversely correlated with pre-immunization serum neutralizing titers. Active surveillance throughout the ensuing pass identified three RSV infections in the placebo assort and none in the vaccine group. Thus. PFP-2 was found to be safe and immunogenic in healthy older adults. A cold-passaged RSV mutant designated cp-RSV which acquired host be mutations during 52 passages at low temperature in bovine tissue grow was completely attenuated for seropositive adults and children but retained the capacity to create upper respiratory disease in seronegative infants. We sought to introduce additional attenuating mutations such as temperature-sensitive (ts) and small-plaque (sp) mutations into the cp-RSV mutant which is a ts + virus in order to create a mutant which would be satisfactorily attenuated in seronegative infants and young children. Nine mutants of cp-RSV which had acquired either the ts or small-plaque sp phenotype were generated by chemical mutagenesis with 5-fluorouracil. The two ts mutants with the lowest in vitro shut-off temperature namely the cpts-248 (38°C) and cpts-530 (39°C) mutants were the most restricted of the nine cp-RSV mutant progeny tested for efficiency of replication in Balb/c mice. In seronegative chimpanzees the cpts-248 mutant replicated fourfold less efficiently in the nasopharynx and caused significantly less rhinorrhoea than its cp-RSV parent. The cpts-248 mutant virus like its cp-RSV parent was 1000-fold restricted in replication in the trachea compared with wild-type RSV. Previously another candidate RSV live attenuated vaccine strain a mutant designated ts-1 exhibited some instability of its ts phenotype following replication in susceptible humans or chimpanzees. Hence we sought cp-RSV ts progeny that exhibited a greater degree of stability of the ts phenotype than the prototype ts-1 mutant. The cpts-248 and cpts-530 progeny viruses exhibited a greater degree of stability of the ts phenotype in nude mice than the ts-1 virus and in chimpanzees the former mutant also exhibited a greater stability of its ts phenotype than ts-1. The cpts-248 mutant was immunogenic and induced a high level of resistance in chimpanzees to subsequent challenge with wild-type RSV. The cpts-248 mutant therefore exhibits a set of properties that make it a promising vaccine candidate. These desirable properties of cpts-248 suggest that the mutant should be tested in humans for its suitability in immunoprophylaxis. La protéine F est l'une des plus importante coordinate antigénique du VRS (virus respiratoire syncitial). Deux épitopes B correspondant aux acides aminés 200 à 225 et 255 à 278 ont été définis à l'aide d'un sérum de lapin anti-VRS. Une prolifécircumscribe des lymphocytes T auxiliaires induite par des peptides appartenant à ces séquences a été étudiée chez des souris BALB/c ainsi que chez d'autres souches: SJL. C3H/He. B10-BR et C57BL/6. Deux épitopes T adjacents d'épitopes B précédemment définis ont été identifiés sur les peptides 205–225 et 255–278. De plus le peptide 255–278 s'est montré capable de sensibiliser les lymphocytes T auxiliaires à une immunisation in vitro ultérieure par la protéine F.

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Related article:
http://www.sciencedirect.com/science?_ob=GatewayURL&_origin=IRSSSEARCH&_method=citationSearch&_piikey=S0923251606800221&_version=1&md5=e358c52c43342479f956928d563b26f1

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"Identification of T-cell epitopes adjacent to neutralizing ..." posted by ~Ray
Posted on 2008-12-29 18:02:21

Peptides deduced from the central hydrophobic region (residues 158–189) of the G protein of bovine and ovine respiratory syncytial virus (RSV) and of human RSV subtypes A and B were synthesized. These peptides were used to create ELISAs to measure specifically antibodies against these types and subtypes of RSV. We have evaluated the bovine RSV-G peptide in both an indirect ELISA and in a blocking ELISA. Specificity and sensitivity relative to a routine diagnostic ELISA that detects antibodies against the RSV F-protein in bovine sera were 98% and 92% respectively for the indirect peptide-based ELISA and 98% and 98% for the blocking peptide-based ELISA. In paired serum samples rises in antibody titer were detected more frequently with the indirect peptide-based ELISA than with the routine F-ELISA. Furthermore the peptide-based G-ELISAs were able to differentiate between antibodies against BRSV and HRSV and between those against BRSV and ORSV. In addition the indirect peptide-based ELISA was selective for HRSV subtype A and B antibodies. This study shows that peptides corresponding to the central hydrophobic region of the attachment protein G of several RSVs can be used successfully as antigens in highly specific and sensitive immunoassays. We identified subgroup specific protective epitopes represented by the amino acid regions 174–187 and 171–187 of the G glycoproteins from respiratory syncytial virus (RSV) subgroups A and B. Mice immunized with coupled synthetic peptides corresponding to either the region 174–187 containing a Cys186 → Ser substitution or to the native region 171–187 were completely resistant to RSV infection but only to the respective virus. The protective activities of the peptides 174–187 were dependent on the Cys186 → Ser substitution. In addition a recombinant protein representing the region 125–203 of the A subgroup G glycoprotein expressed in Escherichia coli was capable without further treatment to completely protect animals against RSV subgroup A infection. We show that the combinations of cysteinyl residues (positions 173. 176. 182 and 186) retained within either synthetic peptides or the recombinant protein G Respiratory tract infections caused by viruses have been implicated in the pathogenesis of asthma. Of these respiratory pathogens viruses have been demonstrated to be associated with asthma epidemiologically in at least 3 ways (Fig 1). First during infancy certain viruses have been implicated in the inception of the asthmatic phenotype. Genetic susceptibility particularly genes coding for atopic phenotypic characteristics might differentiate at least in part those children who are destined to have persistent wheezing asthma or both later in childhood. Second repeated exposure to infectious viruses in daycare centers or in households with multiple older siblings increases the number of respiratory infections but in doing so it might paradoxically reduce the long-term assay of allergies and asthma through either pre-existing or newly formed alterations in cytokine response profiles. Third in patients with established asthma particularly children viral upper respiratory tract infections play a significant role in producing acute exacerbations of airway obstruction that might result in frequent outpatient visits or in hospitalizations. This review will highlight available data on respiratory syncytial virus infections and their relationship to asthma inception in childhood. The safety and immunogenicity of purified fusion protein (PFP-2) respiratory syncytial virus (RSV) vaccine was evaluated in a randomized placebo-controlled double-blind study of 64 healthy adults over age 60. Vaccination was well tolerated with no significant acute side-effects. Twenty-nine of 33 vaccinees (87%) showed a greater than or equal to fourfold go in serum IgG to the F protein of RSV at 8 weeks affix vaccination. Twenty of 33 vaccine recipients (61%) had a greater than or equal to fourfold go in serum neutralizing titer to group A and/or group B RSV. Response to vaccination was inversely correlated with pre-immunization serum neutralizing titers. Active surveillance throughout the ensuing pass identified three RSV infections in the placebo group and none in the vaccine group. Thus. PFP-2 was found to be safe and immunogenic in healthy older adults. A cold-passaged RSV mutant designated cp-RSV which acquired host range mutations during 52 passages at low temperature in bovine tissue culture was completely attenuated for seropositive adults and children but retained the capacity to cause upper respiratory disease in seronegative infants. We sought to introduce additional attenuating mutations such as temperature-sensitive (ts) and small-plaque (sp) mutations into the cp-RSV mutant which is a ts + virus in request to generate a mutant which would be satisfactorily attenuated in seronegative infants and young children. Nine mutants of cp-RSV which had acquired either the ts or small-plaque sp phenotype were generated by chemical mutagenesis with 5-fluorouracil. The two ts mutants with the lowest in vitro shut-off temperature namely the cpts-248 (38°C) and cpts-530 (39°C) mutants were the most restricted of the nine cp-RSV mutant progeny tested for efficiency of replication in Balb/c mice. In seronegative chimpanzees the cpts-248 mutant replicated fourfold less efficiently in the nasopharynx and caused significantly less rhinorrhoea than its cp-RSV parent. The cpts-248 mutant virus like its cp-RSV parent was 1000-fold restricted in replication in the trachea compared with wild-type RSV. Previously another candidate RSV be attenuated vaccine strain a mutant designated ts-1 exhibited some instability of its ts phenotype following replication in susceptible humans or chimpanzees. Hence we sought cp-RSV ts progeny that exhibited a greater degree of stability of the ts phenotype than the prototype ts-1 mutant. The cpts-248 and cpts-530 progeny viruses exhibited a greater degree of stability of the ts phenotype in nude mice than the ts-1 virus and in chimpanzees the former mutant also exhibited a greater stability of its ts phenotype than ts-1. The cpts-248 mutant was immunogenic and induced a high level of resistance in chimpanzees to subsequent contend with wild-type RSV. The cpts-248 mutant therefore exhibits a set of properties that make it a promising vaccine candidate. These desirable properties of cpts-248 suggest that the mutant should be tested in humans for its suitability in immunoprophylaxis. La protéine F est l'une des plus importante coordinate antigénique du VRS (virus respiratoire syncitial). Deux épitopes B correspondant aux acides aminés 200 à 225 et 255 à 278 ont été définis à l'aide d'un sérum de lapin anti-VRS. Une prolifération des lymphocytes T auxiliaires induite par des peptides appartenant à ces séquences a été étudiée chez des souris BALB/c ainsi que chez d'autres souches: SJL. C3H/He. B10-BR et C57BL/6. Deux épitopes T adjacents d'épitopes B précédemment définis ont été identifiés sur les peptides 205–225 et 255–278. De plus le peptide 255–278 s'est montré capable de sensibiliser les lymphocytes T auxiliaires à une immunisation in vitro ultérieure par la protéine F.

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Related article:
http://www.sciencedirect.com/science?_ob=GatewayURL&_origin=IRSSSEARCH&_method=citationSearch&_piikey=S0923251606800221&_version=1&md5=e358c52c43342479f956928d563b26f1

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"T cell receptor beta chain from sea bream (Sparus aurata ..." posted by ~Ray
Posted on 2008-10-24 08:44:05

T-cells are the main actors of cell-mediated immune defence; they recognize and respond to peptide antigens associated with MHC class I and class II molecules. In this paper we investigated by molecular modelling methods in the teleost sea bream (Sparus aurata) the interaction among the molecules of the tertiary complex CD8/MHC-I/TCR which determines the T-cell-mediated immunological response to foreign molecules. First we predicted the three-dimensional structure of CD8αα dimer and MHC-I and successively we simulated the CD8αα/MHC-I complex. Finally the 3D structure of the CD8/MHC-I/TCR complex was simulated in order to investigate the possible changes that can influence TCR signalling events. The major histocompatibility complex class I and II molecules (MHC-I and MHC-II) play a pivotal role in vertebrate immune response to antigenic peptides. In this paper we report the cloning and sequencing of the MHC class II β chain from sea bass (Dicentrarchus labrax L.). The six obtained cDNA sequences (designated as Dila-DAB) code for 250 amino acids with a predicted 21 amino acid signal peptide and contain a 28 bp 5′-UTR and a 478 bp 3′-UTR. A multiple alignment of the predicted translation of the Dila-DAB sequences was assembled together with other fish and mammalian sequences and it showed the conservation of most amino acid residues characteristic of the MHC class II β chain structure. The highest basal Dila-DAB expression was found in gills followed by gut and thymus lower mRNA levels were found in spleen peripheral blood leucocytes (PBL) and liver. Stimulation of head kidney leukocytes with LPS for 4 h showed very little difference in the Dila-DAB expression but after 24 h the Dila-DAB level decreased to a large extent and the difference was statistically significant. Stimulation of head kidney leukocytes with different concentrations of rIL-1β (ranging from 0 to 100 ng/ml) resulted in a dose-dependent reduction of the Dila-DAB expression. Moreover two 3D Dila-DAB*0101 homology models were obtained based on crystallographic mouse MHC-II structures complexed with D10 T-cell antigen receptor or human CD4; features and differences between the models were evaluated and discussed. Taken together these results are of interest as MHC-II structure and function molecular polymorphism and differential gene expression are in correlation with disease resistance to virus and bacteria in teleost fish. The T cell receptor is a fundamental mediator of the adaptive immune responses since TR αβ on T cells recognize foreign structures (peptides derived from processed antigens) bound to the major histocompatibility complex (MHC) on APC cells. In the present study we report the cloning of six TRB chains cDNA sequences from gilthead sea bream (Sparus aurata) a fish of high economical impact in South Mediterranean aquaculture. The V-BETA domains have the canonical features of known teleost and mammalian TR V-BETA domains and have been divided in four different subgroups. A multiple alignment of the six sea bream TRB chains with other known TRB sequences was assembled and showed the conservation of the four cysteine residues involved in disulphide bonds and of some amino acids with an important role in the assembly and signalling of the TR αβ/CD3 complex. Real-time PCR analysis was used to investigate TRB basal expression that was maximum in the thymus followed by gut and TRB in vitro expression after stimulation with LPS or PHA-L at 4 and 24 h (only the 4 h stimulation with LPS gave a significant effect). Moreover the 3D structures of sea bream TRB chains and MHC-I were predicted by homology modelling with the final aim to investigate the interaction surface in the V-BETA/MHC-I complexes. Fig. 1. Panel A: Predicted amino acid sequences of the six V-BETA domains. The IMGT unique numbering for V-DOMAIN () and FR-IMGT and CDR-IMGT delimitations are indicated above the sequences. The CDR-IMGT lengths are: clone 1 [6.5.10]; clone 2 [6.8.11]; clone 3 [6.8.13]; clone 4 [6.8.9]; clone 5 [7.8.11]; clone 6 [6.5.10]. The A for clone 4 indicates the presence of an additional amino acid a proline residue in position 96A. C23. W41. L89. C104 and F118 amino acid residues are evidenced in bold. Panel B: Percentage of nucleotide identities between the V-REGION (comprised between the first codon and second cysteine residue in position 104) of the six sea bream TRBV genes. Percentage values more than 75% are evidenced in bold. Fig. 2. Alignment of the predicted sea bream TRB chain amino acid sequences with other known TRB molecules. Regions corresponding to the putative signal peptide variable region diversity and joining (DJ) region constant Ig domain connecting peptide (CPS) transmembrane region (TM) and cytoplasmic tail (CYT) are shown according to. Conserved cysteine residues are evidenced in bold conserved amino acid residues are indicated with a dot the gaps are indicated with hyphens the putative N-glycosylation sites are underlined. Accession numbers: S aurata (sea bream) clone 1 AM261209 Fig. 3. Phylogenetic tree showing the relationship between the V-REGION of the six TRBV sea bream genes and of some Oncorhynchus mykiss sequences. The amino acid sequences are indicated with their accession number and the sea bream sequences are evidenced with an arrow. The tree was constructed by the “neighbour-joining” method and was bootstrapped 10,000 times. 0.2 indicates the genetic distance. Fig. 5. In vitro sea bream TRB expression analysis. LPS: TRB mRNA levels expressed as a ratio relative to β-actin levels in the same samples after real-time PCR analysis of HK leucocytes stimulated with PBS (control) and with 5 μg/ml LPS for 4 and 24 h and normalised against the non-stimulated controls. PHA: TRB mRNA levels expressed as a ratio relative to β-actin levels in the same samples after real-time PCR analysis of HK leucocytes stimulated with PBS (control) and with 1 μg/ml PHA-L for 4 and 24 h and normalised against the non-stimulated controls. Controls for 4 and 24 h of incubation with PBS only are also shown in the graphs. Data were expressed as the mean ± S. D and asterisks indicates when p < 0.05 with respect to the time 0 control. Fig. 6. Panel A: 3D model of sea bream V-BETA clone 3. The backbone ribbon and secondary structure topology are shown: yellow arrows represent β-strands. The different strands are indicated with red letters. Amino and carboxy terminal ends and CDR regions are indicated. Green and yellow sticks evidenced the presence of a putative intrachain disulfide bond between C23 and C104 the residues W41 and F118 are evidenced. Panel B: IMGT Collier de Perles of sea bream V-BETA clone 3. (For interpretation of the references to colour in this figure legend the reader is referred to the web version of the article.) Fig. 7. 3D model of sea bream MHC-I. The backbone ribbon and secondary structure topology are shown: yellow arrows represent β-strands and red cylinders represent α-helices. The different strands are indicated with letters. Green and yellow sticks indicate the presence of two putative intrachain disulfide bonds. (For interpretation of the references to colour in this figure legend the reader is referred to the web version of the article.)

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"GMCSF in the absence of other cytokines sustains human dendritic ..." posted by ~Ray
Posted on 2007-12-21 00:50:08

We have investigated an improved method for generating sizable numbers of mature dendritic cells from nonproliferating progenitors in human blood. The procedure uses 1% human plasma in the place of 10% fetal calf serum and involves two steps. The first go or ‘priming’ arrange is a 6–7 day culture of T cell depleted mononuclear cells in medium supplemented with GM-CSF and IL-4. The second step or ‘differentiation’ phase requires the exposure to macrophage conditioned medium. This medium cannot be replaced by several known cytokines such as TNF-α. IL-1. IL-6. IL-12 and IL-15 and cannot be inhibited with neutralizing antibodies to IL-1. TNF-α. IL-6 or IL-12 alone or in combination. Using this two-step come we obtain substantial yields. About 1–3 × 10 and adherent blood mononuclear cells and have all the features of develop cells. They include a stellate cell cause nonadherence to plastic and very strong T cell stimulatory activity. Strong APC answer was evident for both the proliferation of allogeneic T cells in the MLR and the generation by syngeneic T cells of class I restricted. CTL responses to influenza virus. A adorn of dendritic cell restricted markers is also expressed including CD83 p55 and perinuclear CD68. All of these dendritic cell properties are retained for at least 3 days when the cytokines are removed suggesting that these populations are stable and terminally differentiated. We suggest that these cells ordain be effective in vivo as adjuvants for active immunotherapy. Experimentally laparotomy is associated with increased tumor growth. In humans abdominal surgery is associated with immunosuppression and elevated plasma VEGF levels that might stimulate tumor growth early after surgery. Avoidance of these surgery-related changes and their consequences may be advantageous. Granulocyte-macrophage colony stimulating factor (GMCSF) is a non-specific immune system up-regulator that has also been associated experimentally with increased release of soluble VEGF Receptor 1 (sVEGFR1) which is an endogenous inhibitor of VEGF. This study's purpose was to cause the impact of perioperatively administered recombinant human GMCSF (rhu-GMCSF) on both immune function and plasma sVEGFR1 levels in colorectal cancer patients. The total WBC neutrophil eosinophil and monocyte counts were significantly higher after surgery in the GMCSF group; no differences were noted for the other immune parameters..

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"Autonomic Denervation of Lymphoid Organs Leads to Epigenetic ..." posted by ~Ray
Posted on 2007-12-12 19:24:35

Lymphocyte Activation Unit. San Raffaele Scientific Institute. Milan 20132. Italy Correspondence should be addressed to either of the following: Dr. Anna Mondino. Lymphocyte Activation Unit. Cancer Immunotherapy and Gene Therapy Program. San Raffaele Scientific Institute. Via Olgettina 58. Milano 20132. Italy. telecommunicate: mondino anna{at}hsr it; or Dr. Ernesto R. Bongarzone. Department of Anatomy and Cell Biology. College of Medicine. University of Illinois at Chicago. 808 South Wood Street. M/C 512. Chicago. IL 60612-7308. telecommunicate: Email: ebongarz{at}uic edu Lysosomal β-galactosylceramidase deficiency results in Correspondence should be addressed to either of the following: Dr. Anna Mondino. Lymphocyte Activation Unit. Cancer Immunotherapy and Gene Therapy Program. San Raffaele Scientific Institute. Via Olgettina 58. Milano 20132. Italy. Email: mondino anna{at}hsr it; or Dr. Ernesto R. Bongarzone. Department of Anatomy and Cell Biology. College of care for. University of Illinois at Chicago. 808 South Wood Street. M/C 512. Chicago. IL 60612-7308. telecommunicate: Email: ebongarz{at}uic edu

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"The art of caring for your Helio fin phone and your marriage" posted by ~Ray
Posted on 2007-11-23 15:55:22

I sometimes move my head in wonderment and in the past have gone into judgment that how careless and angry couple can be in breaking all the rules closed cultivating a good marriage. I've actually witnessed couples bicker nonstop physically hitting each other acting like five-year-olds ignoring the affiliate that they are with that I hope I don't appear harsh or heartless when I say this. Have they considered break? Have they considered shooting each other to end the suffering? The last question was actually a joke wasI am not serious I don't condone violence in a marriage. In this day and age of 24 hour access when we never turn our cell telecommunicate off it amazes me how the same friend I undergo now who 20 years ago did not own a cell phone was a much more polite person than she is now. This friend of exploit who just came approve from 1 month ago from Brazil with a brand new preserve did not undergo the courtesy to ask me or her friends if it was all right to answer cell phone calls while we were going out on outings. Even Oprah Winfrey does not allow cell phones or blackberries. Now I'm not famous desire Oprah Winfrey but I was amazed at how it was just assumed that it was all right to break or abandoned the conversation that my friend was having with us to act a business or social call that could have gone on the voicemail. If I'm honest with myself I can truly say that I can count in one hand that I truly only have three friends on this planet. Two of the three friends don't change surface own a cell telecommunicate convey God. In the third friend who does own a cell phone keeps her cell phone in her round and move mode. Her cell telecommunicate never rings one were having a conversation at Starbucks dinner and banana leaf etc a person alone lack of courtesy towards their friend also reflects on their lack of courtesy towards their wife or husband. This may appear like I'm being very judgmental. I don't experience how to let go or concede. The add up person out there do not undergo life circumstances similar to me where they were able to pay the measure seven years in bodynamics therapy going to my therapists office two hours a week to gain an understanding that I undergo now about this is such thing as individual boundaries and a relationship boundary. conceive of drawing an oval go. Then draw two circles inside that larger oval circle. Put your initial in one of the small circle put your partners sign in the other circle. This is a visual interpret of your relationship boundary. According to my therapist to relationship boundary is very important to protect care and love. Even if your relationship is going drink the tubes you're actually sabotaging your relationship by telling your friends that you haven't had sex with your significant other for the last 10 months or complaining to your friends about all the negative situations that has occurred in your marriage. What you're doing when you're doing this is your actually a puncturing your relationship boundary as if it puncturing a balloon. Most people are not aware of this. I'm glad to share this with you because I hope it helps you. Even after you stop courting with your beloved you still be to continue to feature sexy clothing or take care of your hygiene change surface after you've been married and walk down the aisle. This goes for same-sex marriages as well. If we all be to look like clones for instance in the communist era in China people were only allowed to wear navy colored jackets and navy colored matching pants and hat. Now if you live in North America thank God the government does not force you to wear the same thing your neighbor does otherwise it would be pretty boring. So this is why the style of the phone matters. You won't look very cool if you walked around like I did a month ago with an Aria cube show below I had no choice but to carry this box see computer and a 17 advance screen mag computer when I attended a conference a month ago in a state of California. I couldn't afford a laptop. PDA was a question. So luckily I met my wife a couple years ago and she didn't see me looking desire a geek caring this thing around. populate don't be to act tension and they're nerves like hearing out heavy laptops that's why smart phones are the future. Since this blog and this web site is dedicated to Helio phones. Helio has really outdone themselves by creating a form that is aesthetically pleasing and absently easy-to-use. In this article am referring mostly to the Helio fin turn smart telecommunicate. For many populate who are not going to be using a smart phone for business functionality like me. If you are a family man family woman or person in the 18 to 35 age demographic and don't be to learn a Windows mobile five operating system and be constantly buying software and plug-in to have cool applications you'll want no other phone than the Helio fin. As I said before that I don't wanna sound repetitive if you go to the Helio official web site the Helio fin telecommunicate retails $175. Because we care about the consumer and we work really hard to cut our costs but not hiring employees were able to offer the Helio fin phone to you when you sign a Helio all in membership were on a cart intend for only $25.

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http://www.free-cellular-phone-deals.com/blog/2007/09/the_art_of_caring_for_your_hel.php

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"MySpace Mobile Now Available on T-Mobile Sidekick" posted by ~Ray
Posted on 2007-11-07 16:40:34

T-Mobile USA. Inc.. Danger. Inc. and MySpace today announced a highly integrated MySpace Mobile experience for the T-Mobile Sidekick. The announcement marks the first partnership between MySpace with T-Mobile and Danger. The MySpace Mobile software is tightly integrated with the T-Mobile Sidekick hardware user interface and all the applications on the device. The new MySpace Mobile for the T-Mobile Sidekick is designed to hone the delivery of data to each user and hold the features that MySpace users love on the PC. All aspects of the MySpace Mobile experience are tailored so users can simply journey on the T-Mobile Sidekick check and enjoy abstain find to T-Mobile's robust wireless network. Customized User Interface (UI) The new function has pertinent information including new messages friend requests and comments located in one easy-to-navigate domiciliate check. To use other aspects of the function users simply journey through the four main sections of the application: Home. MyMail. Blog and Search. The Sidekick's directional pad allows users to jump easily from each activity without waiting for a page to load. Real-time Updates MySpace Mobile users can stay signed in to MySpace change surface when they are on the go with their T-Mobile Sidekick. Real-time features include: Profile editing which allows users to edit their MySpace compose directly from the MySpace application quickly and easily wherever they are. compose updates are immediately reflected on the MySpace Web site. Full-featured MySpace messaging including push content and notifications powered by the Danger service. The function automatically pushes circumscribe such as new friend requests or new messages to the end user meaning that users are notified of new MySpace activity even when they are using other T-Mobile Sidekick applications. This changes the interaction paradigm from communicate/ response (as it is via the browser today) to real-time displace messaging. The application will provide "Online Now" status for a user's friends who are online further advancing the "always-on" copy. The MySpace Mobile service is made possible on the T-Mobile Sidekick through two components. The first component is the client software being made available for download in a staged rollout to the T-Mobile Sidekick user base throughout the next several weeks. The back up component is the function that powers the application. Danger has created a private interconnection to MySpace whereby each user can access all of his or her be data and act with friends in real measure. This week. T-Mobile will mouth a multi-week rollout of the new application to T-Mobile Sidekick users. T-Mobile customers can access and subscribe to the function through the transfer Catalog. The new service ordain be available to all Sidekick iD and Sidekick 3 users by the end of October. For more information about the T-Mobile Sidekick tour.

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http://www.cellphonedigest.net/news/2007/09/myspace_mobile_now_available_o.php

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"Has your illness been misdiagnosed?" posted by ~Ray
Posted on 2007-10-30 18:42:15

In June 2004. Trisha Torrey open a play ball-size accumulate in her torso. A surgeon removed it and gave her the grim news: CANCER. If you don’t get better after treatment ask your doctor more questions. And it wasn’t just any cancer but an extremely rare write of lymphoma. “The oncologist told me that if I didn’t mouth chemo immediately,” says Torrey. “I would be dead by Christmas.” The 52-year-old marketing consultant says she was petrified. But something in her gut told her the diagnosis was wrong. Her doctor assured her it was alter: two labs had confirmed the subcutaneous panniculitis-like T-cell lymphoma. Against her adulterate’s orders. Torrey delayed chemo and went to another oncologist who sent a create from raw material sample to the National Institutes of Health. The result: Torrey never had cancer. The lump was a harmless fatty growth. “On the one hand. I was overjoyed; on the other transfer. I was just furious,” Torrey says. She couldn’t accept she had been on the border of having chemotherapy for nothing. What was it in Torrey’s gut that told her the diagnosis might be wrong? It’s a lesson worth learning because misdiagnoses are more common than you might evaluate: A 2005 chew over in the Journal of the American Medical Association says autopsy studies show doctors are wrong 10 percent to 15 percent of the time. Here from Torrey and from medical experts are some red flags… Five reasons for suspecting your adulterate might undergo made the do by diagnosis. 1. You don’t get exceed with treatment Sometimes doctors fasten to a diagnosis even when multiple treatments aren’t working. As vice president for loss prevention and patient safety at Harvard’s Risk Management Foundation. Bob Hanscom remembers one particular lawsuit against Harvard doctors. A young woman complained of stomach and chest pain. Her doctor prescribed a medicine for gastric reflux. When it didn’t work a back up doctor prescribed another medicate for gastric reflux. It also didn’t bring home the bacon. The woman ended up in the emergency dwell with acute pancreatitis which eventually caused kidney failure. She survived but ordain be on dialysis the rest of her life. “In her deposition she said nobody was listening to her so she kind of gave up,” Hanscom says. “When I construe that. I thought. ‘Oh God. I desire you hadn’t given up.’ ” 2. Your symptoms don’t be your diagnosis This is where the Internet comes in. You don’t have to be a medical professional to explore your diagnosis. For example let’s say a adulterate diagnoses you with tendinitis. Looking it up you can find out it usually lasts about six to 12 weeks according to Dr. Saul Weingart an internist and vice president for patient safety at Dana-Farber Cancer Institute in Boston. Massachusetts. If you’re still in pain beyond that time the adulterate may have made the wrong diagnosis. 3. Your diagnosis is based purely on a lab test The reality is that labs alter mistakes. In Torrey’s inspect she says two labs made mistakes. When lab results are the sole criteria for a diagnosis that can be a red flag says Torrey who works as a patient advise. Another red sign is when a diagnosis of a rare disease comes from a lab that doesn’t alter in that disease. Weingart says. 4. Your doctor attributes common complaints to an uncommon ailment Torrey says her doctor said her night sweats and hot flashes were caused by the extremely rare lymphoma. Actually they were signs of menopause. 5. Your diagnosis usually involves a evaluate you never received This is where the Internet comes in handy again. If you find out a specific evaluate can determine the diagnosis you’ve been given but you were never given that evaluate that’s a reason to head back to the doctor’s office armed with questions says Torrey. If you suspect you’ve been misdiagnosed you have two choices: You can go back to the adulterate who made the original diagnosis or you can seek out a second opinion (or do both). ***************convey you CNN News and By Elizabeth Cohen******************************************* Don’t think this does not come about…I was not diagnosed with Lupus until 1995…and I believe that I had this disease all of my life… care for is a science and not an exact one at that! A lot of Doctors interact you with medication only. And I can remember not too long ago when physicians were preforming hysterectomies like they used to take tonsils out. Buyer beware! Get a back up and even a third opinion if you do not feel comfortable. You undergo the right to end…you are the patient! Survivors’ Debate: The Past Decade in Ovarian Cancer Survivor-led coordinated and sponsored October 27th. 2007: Novi. MichiganNovember 3rd. 2007: Toronto. Canada free admission/please see blog for details and registration I beg your.

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http://httpwwwbabyboomeradvisorclubcom.wordpress.com/2007/09/21/has-your-illness-been-misdiagnosed/

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"Alemtuzumab (Campath-1H) and CHOP chemotherapy as first-line ..." posted by ~Ray
Posted on 2007-10-25 20:14:28

Blood. 1 October 2007. Vol. 110. No. 7 pp. 2316-2323. Prepublished online as a Blood First Edition cover on June 20. 2007; DOI 10.1182/blood-2007-02-074641. Alemtuzumab (Campath-1H) and cut chemotherapy as first-line treatment of peripheral T-cell lymphoma: results of a GITIL (Gruppo Italiano Terapie Innovative nei Linfomi) prospective multicenter trial

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http://bloodjournal.hematologylibrary.org/cgi/content/short/110/7/2316?rss=1

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