Dear Editor： Anti-sperm antibodies （ASAs） are composed of numerous antibodies interacting with multiple sperm antigens that play a role in fertility. In males, ASAs cause ＇immune infertility＇ by decreasing sperm ...Dear Editor： Anti-sperm antibodies （ASAs） are composed of numerous antibodies interacting with multiple sperm antigens that play a role in fertility. In males, ASAs cause ＇immune infertility＇ by decreasing sperm counts and normal forms, as well as reducing sperm motility and viability, markedly reducing the likelihood of natural conception. The development of ASA in the male depends on the release of sequestered antigens on germ cells following the disruption of the blood-testis barrier.展开更多
Thirty patients with Vogt-Koyanagi-Haradas disease were typed for HLA-A and HLA-B antigenic determinants by a microlymphocytotoxicity technique. HLA-B22 antigen showed an increased frequency of 43.3% in the patient gr...Thirty patients with Vogt-Koyanagi-Haradas disease were typed for HLA-A and HLA-B antigenic determinants by a microlymphocytotoxicity technique. HLA-B22 antigen showed an increased frequency of 43.3% in the patient group(relative risk=8.69; exact P<0.0001; corrected P<0.0025) compared with normal control group(frequency=7.69%). This association suggests that immunogenetic factor may play an important role in the pathogenesis of Vogt-Koyanagi-Harada's disease.展开更多
Objective:To observe the effects of immunosuppressants triptolide(TL)and cyclosporineA(CSA)on HLA antigens expression induced by interferon-γ（INF-γ）in vitro.Method:By using an indirect immunofluorescent method and...Objective:To observe the effects of immunosuppressants triptolide(TL)and cyclosporineA(CSA)on HLA antigens expression induced by interferon-γ（INF-γ）in vitro.Method:By using an indirect immunofluorescent method and analysing with ACAS-570,the abnormal HLA antigen expression of cultured corneal epithelial cells was induced by INF-γ，After incubation with one of the immunosuppressants(CSA,TL) for72hrs.the amount of HLA-ABCand HLA-DRantigens was measured.Result:There was no significant difference(P>0.05)between the group with CAS and the positive control group without CAS.In contrast to CSA,TL dramatically inhibited INF-γinduced expression of HLA antigens of corneal epithelial cells(P<0.001),compared with the control group withoutTL.Conclusion:TL had direct inhibition on the expression of HLA-ABCand HLA-DRantige ns induced by INF-γin vitro,while CSAhad no obvious inhibition,Eye Science2000;16:34-37.展开更多
Objectives: In order to investigate the role of mono-cytes and human leukocyte antigen (HLA) class II an-tigen in herpes simplex virus-2 (HSV-2) infection, westudied the effect of HSV-2 infection in vitro on theexpres...Objectives: In order to investigate the role of mono-cytes and human leukocyte antigen (HLA) class II an-tigen in herpes simplex virus-2 (HSV-2) infection, westudied the effect of HSV-2 infection in vitro on theexpression of HLA class II antigen on monocytes.Methods: Monocytes were infected with HSV-2(Strain 333). Culture cells were collected 1, 3, 5 and 7days after infection. The levels of expression of HLAclass II antigen were measured by using alkaline phos-phatase antialkaline phosphatase method (APAAP).Results: The levels of the expression of HLA class IIantigen on monocytes significantly decreased on thefirst day of post-infection, and then gradually returnedto levels found in the controls by the 7th day post-infection.Conclusion: HLA class II antigen expression onmonocytes was inhibited with HSV-2 infection, whichmight be one means of virus escape at an early phase.The expression of HLA class II antigen may play animportant role in herpes simplex viurs-2 pathogenic-ity and immunity.展开更多
In order to evaluate the expression of HLA DR antigen in glandular cells in eutopic and ectopic endometrium in patients with endometriosis, 19 infertile patients with endometriosis were analyzed immunohistoche...In order to evaluate the expression of HLA DR antigen in glandular cells in eutopic and ectopic endometrium in patients with endometriosis, 19 infertile patients with endometriosis were analyzed immunohistochemically by labelled streptavidin biotin (LSAB) method. Nineteen infertile patients without endometriosis were studied as controls. The results showed that the expression of HLA DR antigen in the glandular cells in both eutopic and ectopic endometrium was increased significantly as compared with that in the controls ( P <0.01). It is likely that aberrant expression of HLA DR antigen in endometriotic tissue is involved in abormal immunogenesis of endometriosis.展开更多
This study was designed to establish the prevalence of HLA-B*5701 at HIV-1 infected individuals in Brazil. A total of 517 consecutive individuals were followed in this study from February 2009 through July 2011. The p...This study was designed to establish the prevalence of HLA-B*5701 at HIV-1 infected individuals in Brazil. A total of 517 consecutive individuals were followed in this study from February 2009 through July 2011. The presence of HLA-B*5701 was determined by Nested-PCR with HLA-B*57 and HLA-B*5701 sequence-specific primers (PCR-SSP). The expression of HLA-B*57 was negative in the 385 (74.5%) and positive in the 103 (19.9%) of infected individuals. Among these, the expression of HLA-B5701 was positive in the 29 (5.6%) of individuals. No demographic or ethnic differences were found between HLA-B*57/HLA-B*5701 HIV-1 negative patients, with a prevalence of Caucasians (57.1%) individuals. During the period of study, 68 patients were submited to an abacavir contain- ing regimen. The HLA-B*5701 allele was observed in 7 (10.3%) patients, with a significant incidence of Hypersensitivity reactions at 4 of them (p < 0.001). Conclusions: Although Brazilian population consists of a mixture of individuals of Caucasian, African and Native American genetic background, prevalence of HLA-B*5701 in this population is similar to the one found in pure Caucasians.展开更多
In order to study the relationship between replicative status and human leucocyte antigens(HLA),HLA class Ⅱ antigen on hepatocyte membrane was analyzed in liver biopsies from 49 pa-tients with chronic hepatitis B vir...In order to study the relationship between replicative status and human leucocyte antigens(HLA),HLA class Ⅱ antigen on hepatocyte membrane was analyzed in liver biopsies from 49 pa-tients with chronic hepatitis B virus infection.The results revealed that expression of HLA classⅡ antigen on hepatocyte membrane was observed in 57% (13/23) of hepatitis B e antigen (HBeAg)positive,only in 15% (4/26) of anti-HBe positive carriers.The display of HLA class Ⅱ antigen onhepatocyte membrane yeas found in 65% (11/17) hepatitis B core antigen (HBcAg) positive and in19% (6/32) HBcAg negative patients with chronic hepatitis B virus infection.There was nosignificant difference in the expression of HLA class Ⅱ antigen on hepatocyte membrane between mi-nor hepatic diseases and active liver diseases.These findings suggested that display of HLA classⅡ antigen on hepatocyte membrane might be associated with viral replication in the chronic hepati-tis B virus carriers.展开更多
40 thyroid specimens from Tru-cut needle biopsy and surgerywere analyzed by APAAP immunohistochemical technique.It was shown thatthe expression of HLA-DR antigen on thyroid follicular cells (TFC) wasinvolved in almost...40 thyroid specimens from Tru-cut needle biopsy and surgerywere analyzed by APAAP immunohistochemical technique.It was shown thatthe expression of HLA-DR antigen on thyroid follicular cells (TFC) wasinvolved in almost every patient.The degree of DR expression was signifi-cantly higher in autoimmune thyroiditis (AIT) than in Graves’ disease (GD)and in nontoxic goiter (NTG),The level of DR expression on TFC not onlycorrelated markedly with degree of MNC infiltration,but more so with degreeof DR expression on intrathyroidal infiltrates,suggesting that aberrant DR ex-pression in vivo may be related to the activation of intrathyroidal T cells.展开更多
文摘Dear Editor： Anti-sperm antibodies （ASAs） are composed of numerous antibodies interacting with multiple sperm antigens that play a role in fertility. In males, ASAs cause ＇immune infertility＇ by decreasing sperm counts and normal forms, as well as reducing sperm motility and viability, markedly reducing the likelihood of natural conception. The development of ASA in the male depends on the release of sequestered antigens on germ cells following the disruption of the blood-testis barrier.
文摘Thirty patients with Vogt-Koyanagi-Haradas disease were typed for HLA-A and HLA-B antigenic determinants by a microlymphocytotoxicity technique. HLA-B22 antigen showed an increased frequency of 43.3% in the patient group(relative risk=8.69; exact P<0.0001; corrected P<0.0025) compared with normal control group(frequency=7.69%). This association suggests that immunogenetic factor may play an important role in the pathogenesis of Vogt-Koyanagi-Harada's disease.
文摘Objective:To observe the effects of immunosuppressants triptolide(TL)and cyclosporineA(CSA)on HLA antigens expression induced by interferon-γ（INF-γ）in vitro.Method:By using an indirect immunofluorescent method and analysing with ACAS-570,the abnormal HLA antigen expression of cultured corneal epithelial cells was induced by INF-γ，After incubation with one of the immunosuppressants(CSA,TL) for72hrs.the amount of HLA-ABCand HLA-DRantigens was measured.Result:There was no significant difference(P>0.05)between the group with CAS and the positive control group without CAS.In contrast to CSA,TL dramatically inhibited INF-γinduced expression of HLA antigens of corneal epithelial cells(P<0.001),compared with the control group withoutTL.Conclusion:TL had direct inhibition on the expression of HLA-ABCand HLA-DRantige ns induced by INF-γin vitro,while CSAhad no obvious inhibition,Eye Science2000;16:34-37.
文摘Objectives: In order to investigate the role of mono-cytes and human leukocyte antigen (HLA) class II an-tigen in herpes simplex virus-2 (HSV-2) infection, westudied the effect of HSV-2 infection in vitro on theexpression of HLA class II antigen on monocytes.Methods: Monocytes were infected with HSV-2(Strain 333). Culture cells were collected 1, 3, 5 and 7days after infection. The levels of expression of HLAclass II antigen were measured by using alkaline phos-phatase antialkaline phosphatase method (APAAP).Results: The levels of the expression of HLA class IIantigen on monocytes significantly decreased on thefirst day of post-infection, and then gradually returnedto levels found in the controls by the 7th day post-infection.Conclusion: HLA class II antigen expression onmonocytes was inhibited with HSV-2 infection, whichmight be one means of virus escape at an early phase.The expression of HLA class II antigen may play animportant role in herpes simplex viurs-2 pathogenic-ity and immunity.
文摘In order to evaluate the expression of HLA DR antigen in glandular cells in eutopic and ectopic endometrium in patients with endometriosis, 19 infertile patients with endometriosis were analyzed immunohistochemically by labelled streptavidin biotin (LSAB) method. Nineteen infertile patients without endometriosis were studied as controls. The results showed that the expression of HLA DR antigen in the glandular cells in both eutopic and ectopic endometrium was increased significantly as compared with that in the controls ( P <0.01). It is likely that aberrant expression of HLA DR antigen in endometriotic tissue is involved in abormal immunogenesis of endometriosis.
文摘This study was designed to establish the prevalence of HLA-B*5701 at HIV-1 infected individuals in Brazil. A total of 517 consecutive individuals were followed in this study from February 2009 through July 2011. The presence of HLA-B*5701 was determined by Nested-PCR with HLA-B*57 and HLA-B*5701 sequence-specific primers (PCR-SSP). The expression of HLA-B*57 was negative in the 385 (74.5%) and positive in the 103 (19.9%) of infected individuals. Among these, the expression of HLA-B5701 was positive in the 29 (5.6%) of individuals. No demographic or ethnic differences were found between HLA-B*57/HLA-B*5701 HIV-1 negative patients, with a prevalence of Caucasians (57.1%) individuals. During the period of study, 68 patients were submited to an abacavir contain- ing regimen. The HLA-B*5701 allele was observed in 7 (10.3%) patients, with a significant incidence of Hypersensitivity reactions at 4 of them (p < 0.001). Conclusions: Although Brazilian population consists of a mixture of individuals of Caucasian, African and Native American genetic background, prevalence of HLA-B*5701 in this population is similar to the one found in pure Caucasians.
文摘In order to study the relationship between replicative status and human leucocyte antigens(HLA),HLA class Ⅱ antigen on hepatocyte membrane was analyzed in liver biopsies from 49 pa-tients with chronic hepatitis B virus infection.The results revealed that expression of HLA classⅡ antigen on hepatocyte membrane was observed in 57% (13/23) of hepatitis B e antigen (HBeAg)positive,only in 15% (4/26) of anti-HBe positive carriers.The display of HLA class Ⅱ antigen onhepatocyte membrane yeas found in 65% (11/17) hepatitis B core antigen (HBcAg) positive and in19% (6/32) HBcAg negative patients with chronic hepatitis B virus infection.There was nosignificant difference in the expression of HLA class Ⅱ antigen on hepatocyte membrane between mi-nor hepatic diseases and active liver diseases.These findings suggested that display of HLA classⅡ antigen on hepatocyte membrane might be associated with viral replication in the chronic hepati-tis B virus carriers.
文摘40 thyroid specimens from Tru-cut needle biopsy and surgerywere analyzed by APAAP immunohistochemical technique.It was shown thatthe expression of HLA-DR antigen on thyroid follicular cells (TFC) wasinvolved in almost every patient.The degree of DR expression was signifi-cantly higher in autoimmune thyroiditis (AIT) than in Graves’ disease (GD)and in nontoxic goiter (NTG),The level of DR expression on TFC not onlycorrelated markedly with degree of MNC infiltration,but more so with degreeof DR expression on intrathyroidal infiltrates,suggesting that aberrant DR ex-pression in vivo may be related to the activation of intrathyroidal T cells.
