肿瘤相关基因NET-1在皮肤鳞状细胞癌中的表达

目的 研究NET-1蛋白在皮肤鳞状细胞癌(SSCC)中表达的临床与病理意义.方法 通过基因生物工程技术制备针对NET-1蛋白大部分细胞外区的多克隆抗体,应用免疫组化SP法检测NET-1基因蛋白在56例SSCC组织、50例皮肤上皮内瘤变(SINⅠ～Ⅲ级)及10例正常人皮肤(NS)组织中的表达.结果 ①NET-1蛋白阳性表达定位清晰,为细胞膜和/或胞质,组织背景非特异性反应弱或无;②NET-1仅表达在SINⅢ中上皮全层,阳性率为93.75%,在SSCC中表达阳性率为96.43%.NET-1在SSCC和SINⅢ中的阳性率显著高于SINⅠ～Ⅱ级,其阳性率为44.22%.③SSCC细胞不同Ki67表达强度、浸润深度和皮肤肿瘤TNM分期中NET-1表达除有显著筹异外,还与NET-1阳性表达呈显著正相关.在不同SSCC组织类型中,疣状鳞癌与梭形细胞鳞癌和经典鳞癌之间NET-1表达有显著差异.结论 本文设计合成的NET-1抗体在SSCC石蜡标本中定位良好,可能是一个新的诊断SSCC的辅助组织学标记.     

桥粒芯蛋白1酶联免疫吸附试验检测落叶型天疱疮血清抗体的评价

目的 探讨桥粒芯蛋白1（Dsg1）酶联免疫吸附试验（ELISA）检测落叶型天疱疮（PF）血清学抗体的意义。方法 将80例PF患者和132例对照人群的血清标本进行编盲,用ELISA法检测所有标本中抗Dsg1自身抗体,同时应用间接免疫荧光（IIF）法检测所有标本的抗体滴度,操作过程为随机检测,最后将两方法的结果进行比较。结果 75例PF患者和5例对照人群（包括1例不确定值,大疱性类天疱疮、SLE、皮肌炎、湿疹及健康者各1例）Dsg1 ELISA为阳性,71例PF患者和0例对照人群IIF为阳性。Dsg1 ELISA的敏感性为93.8%（95%可信区间0.85 ~ 0.98）,特异性为96.2%（95%可信区间0.91 ~ 0.99）。IIF的敏感性为88.8%（95%可信区间0.82 ~ 0.96）,特异性为100%（95%可信区间0.96 ~ 1.00）。两者相比,敏感性（P = 0.289）和特异性（P = 1.000）差异均无统计学意义。结论 Dsg1 ELISA是一种简便、敏感、特异的血清学检测方法,可作为诊断PF的一种辅助手段。     

Correlations between Anti-Mast Cell Autoantibodies and Chronic Idiopathic Urticaria

Background

The etiology of chronic idiopathic urticaria (CIU) is not completely clear. There are a few antibodies were reported to correlate with CIU.

Objective

To investigate the correlation these antibodies and CIU.

Methods

The autologous serum skin test (ASST) and allergens were performed. Serum levels of immunoglobulin E (IgE), anti-FcεRI and anti-IgE, anti-Helicobacter pylori (HP) antibodies and anti-thyroglobulin antibody (TGAb) were measured in 100 patients with CIU, acute urticaria (AU) and normal controls respectively.

Results

Eighty-six percent food or inhalant allergens were detected in AU patients, but no allergens were detected in CIU patients and normal controls. Serum anti-FcεRI antibody and anti-IgE antibody levels were higher in the CIU than that in the AU patients and normal controls (p<0.05, respectively). IgE level was lower in the CIU patients (T=190.00, p< 0.05), but increased in the AU patients (T=226.00, p<0.05) compared with the normal controls. The ASST positive rates in the CIU and the AU patients were 53.4% and 12.6% respectively, but all normal controls were negative. The anti-FcεRI antibody level was higher in the ASST-positive CIU patients than those negative ones (T=101.73, p<0.05). In anti-HP antibody positive and TGAb positive CIU patients, anti-FcεRI antibody positive rate was higher than AU patients (p<0.01) and normal controls (p<0.01).

Conclusion

The anti-FcεRI and anti-IgE antibodies play a key role in CIU, but anti-HP antibody and TGAb have an indirect correlation with CIU.     

白癜风患者血清中抗酪氨酸酶抗体及可溶性细胞间黏附分子1的检测

目的 探讨白癜风患者血清中抗酪氨酸酶IgG、IgM抗体滴度和可溶性细胞间黏附分子1(sICAM-1)水乎与疾病活动程度的关系和临床意义。方法 抗酪氨酸酶IgG、IgM抗体和sICAM-1检测采用酶联免疫吸附试验(ELISA)方法。结果 ①白癜风患者血清中抗酪氨酸酶IgG抗体平均滴度为0.316,显著高于正常人对照组0.082(P<0.001);白癜风患者血清中抗酪氨酸酶IgM抗体平均滴度为0.238,显著高于正常人对照组0.065(P<0.001)。②白癜风患者进展期血清抗酪氨酸酶IgG、IgM抗体滴度明显高于稳定期(P均<0.001),泛发型明显高于局限型(P均<0.001)。③抗酪氨酸酶IgG、IgM抗体滴度与抗黑素细胞IgG抗体阳性及IgM抗体阳性均呈正相关(P均<0.001)。④白癜风患者血清sICAM-1平均水平为697.40ng/mL,显著高于正常人对照组602.40ng/ml(P<0.001);进展期高于稳定期(P<0.001);泛发型高于局限型(P<0.001);稳定期和局限型白癜风患者血清中sICAM-1水平与正常人对照组差异无统计学意义(P均>0.05)。结论 白癜风患者血清中抗酪氨酸酶IgG、IgM抗体和sICAM-1与疾病活动性和严重程度相关。     

白癜风患者血清中抗酪氨酸酶抗体及可溶性细胞问黏附分子1的检测

目的探讨白癜风患者血清中抗酪氨酸酶IgG、IgM抗体滴度和可溶性细胞间黏附分子1（sICAM-1）水平与疾病活动程度的关系和临床意义。方法抗酪氨酸酶IgG、IgM抗体和sICAM-1检测采用酶联免疫吸附试验（ELISA）方法。结果①白癜风患者血清中抗酪氨酸酶IgG抗体平均滴度为0．316，显著高于正常人对照组0．082（P〈0．001）；白癜风患者血清中抗酪氨酸酶IgM抗体平均滴度为0．238，显著高于正常人对照组0．065（P〈0．001），②白癜风患者进展期血清抗酪氨酸酶IgG、IgM抗体滴度明显高于稳定期（P均〈0．001），泛发型明显高于局限型（P均〈0．001）。③抗酪氨酸酶IgG、IgM抗体滴度与抗黑素细胞IgG抗体阳性及IgM抗体阳性均呈币相关（P均〈0．001）。④白癜风患者血清sICAM-1平均水平为697．40ng／mL，显著高于正常人对照组602．40ng／ml（P〈0．001）；进展期高于稳定期（P〈0．001）；泛发型高于局限型（P〈0．001）：稳定期和局限型白癜风患者血清中sICAM-1水平与正常人对照组差异无统计学意义（P均〉0．05）。结论白癜风患者血清中抗酪氨酸酶IgG、IgM抗体和sICAM-1与疾病活动性和严重程度相关。     

瘢痕疙瘩组织中ICAM-1、VEGF、c-fos表达的免疫组化检测

采取免疫组化SP方法检测了细胞间粘附分子 1(ICAM 1)、血管内皮细胞生长因子 (VEGF)、以及原癌基因 (c fos)在瘢痕疙瘩、普通瘢痕、正常皮肤组织中的表达。结果表明ICAM 1、VEGF、c fos在瘢痕疙瘩中表达皆增强。ICAM 1主要表达在真皮浅层血管、浸润的炎细胞、成纤维细胞 ;VEGF、c fos主要表达在表皮、真皮血管、皮肤附属器 ;部分瘢痕疙瘩标本成纤维细胞c fos染色阳性 ,提示瘢痕疙瘩组织中血管内皮细胞处于一种激活状态 ,瘢痕疙瘩组织血管内皮细胞和成纤维细胞增殖异常。     

c—erbB原癌基因与银屑病

为了探讨ｃ－ｅｒｂＢ与银屑病的关系，采用原位杂交的方法检测ｃ－ｅｒｂＢ－１原癌基因在正常人表皮和银屑病患者损皮中的表达，并观察了正常人朊细胞与银屑病患者ＩｇＧ和中血单一核细胞作用后ｃ－ｅｒｂＢ－１的表达。     

HIV-1 V2区突变对CD4结合位点中和抗体识别的影响

目的 探讨HIV-1病毒包膜蛋白gp120的V2区突变对其他结构域的中和抗体识别的影响。 方法 使用假病毒构建系统包装野生型和V2区突变型的HIV-1假病毒,分别测试抗CD4结合位点中和抗体和CD4诱导的中和抗体对两种病毒的中和作用。使用双抗体夹心ELISA法测试CD4结合位点中和抗体和CD4诱导的中和抗体对gp120野生型和突变型蛋白的亲合力。结果 CD4结合位点中和抗体和CD4诱导的中和抗体均无法中和野生株JR-FL WT假病毒,但2种中和抗体对V2突变株的中和活性显著提高,在低浓度下即可中和该病毒。野生株和突变株gp120单体与抗CD4结合位点中和抗体的结合力无明显差异,而gp120单体与CD4诱导的中和抗体的结合实验ELISA曲线却明显分离,CD4诱导的中和抗体与突变型JR-FL L175P gp120的结合强度均明显高于它们与野生型JR-FL WT gp120的结合强度。结论 HIV-1 V2区突变可影响中和抗体的抗病毒效果。     

新生儿红斑狼疮

报告1例新生儿红斑狼疮。患儿女,出生24d。头部、躯干、外阴及四肢出现环形红斑10余天。肝功能异常．心脏室间隔缺损,抗La／SSB抗体阳性,其母亲抗La／SSB抗体亦阳性。     

Proteins of the cornified envelope.

The cornified envelope of keratinocytes is an insoluble structure formed beneath the plasma membrane at the base of the stratum corneum. It is made by cross-linking precursor proteins by a membrane-associated transglutaminase. Using the cornified envelope of cultured human keratinocytes as the immunogen, we obtained a number of monoclonal antibodies which stained epidermis in a variety of ways. The peripheral staining pattern has been associated with several envelope precursors and this has been confirmed by western blots. A mouse IgM monoclonal antibody directed against epidermal basal cell hemidesmosomes was also discovered. By immunofluorescence, the monoclonal antibody produced a strong linear staining of the basement membrane zone and a polar cap on trypsin-dissociated epidermal basal cells. By immunoelectron microscopy, immunoreactants were present in the attachment plaques of hemidesmosomes on guinea pig esophagus. However, no protein reactive with the antibody was detected. This study suggests that an antigen associated with the basal cell hemidesmosomes may be incorporated in the cornified envelope.     

MCPIP1和IL-17c在寻常型银屑病皮损中的表达

目的:检测MCPIP1和IL-17c在寻常型银屑病患者皮损中的表达。方法:Real-time PCR及免疫荧光检测45例寻常型银屑病患者皮损及19例正常皮肤中MCPIP1和IL-17c mRNA及蛋白表达水平,皮尔逊相关系数分析MCPIP1和IL-17c的相关性。结果:银屑病组MCPIP1、IL-17c mRNA相对表达量分别为0.8497±0.0661和0.4027±0.04158,对照组中分别为0.2921±0.06135和0.2374±0.02525,差异均有统计学意义(P0.05)。MCPIP1和IL-17c mRNA水平具有明显相关性(P0.05)。患者组皮损中MCPIP1和IL-17c的蛋白表达水平高于正常对照组。结论:MCPIP1和IL-17c可能共同影响寻常型银屑病的发生发展。     

Common antigen expression between human periderm and other tissues identified by GB1-monoclonal antibody

Summary From 4 weeks estimated gestational age (EGA) until the end of the second trimester (24 weeks EGA) the fetal epidermis is covered by a specialised epithelium, the periderm. The origin and function of periderm remain speculative. We have demonstrated, using indirect immunofluorescence and immunoperoxidase staining, that periderm is recognised by a mouse IgM monoclonal antibody (Mab) GB1, which has been raised against a simple extract of human amnion. Immunoelectron microscopy localises GB1 to the amniotic surface of periderm, particularly in association with the microvilli, and also bordering cellular identations of the periderm cells. GB1 antigen (ag) is also expressed by the epithelium of fetal oesophagus, fetal and adult conjunctiva and cornea but is absent in a variety of other fetal and adult tissues including bladder, oral mucosa and thymus. The similar distribution of GB1 ag in both periderm and membranes possibly suggests a common origin and the shared expression with fetal oesophagus and fetal and adult eye may indicate a function related to the fluid environment. We therefore feel that GB1 Mab may be of use in further investigations into the origin, structure and function of human periderm.This study was presented in part at the Annual Meeting of the British Society for Investigative Dermatology, 19–20 September, 1988; ManchesterThis study was supported in part by the Dunhill Medical Trust. Collaborative work between Faculte of Medecine, Nice and Departemnt of Cell Pathology, Institute of Dermatology, London, was made possible by awards from the British Council and Glaxo Pharmaceutical to one of the authors (OMVS).     

皮肌炎／多发性肌炎患者血清Jo—1抗体检测的临床意义

应用免疫印迹技术测定５２例皮肌炎和多发性肌炎病人血清可提取性核抗原（ＥＮＡ）多肽抗体，其中Ｊｏ－１抗体的阳性率分别为１３．３％和３１．８％。１１例Ｊｏ－１抗体阳性病人中７２．７％起较急对类固醇治疗反应差，减药或停药易于复；４５．５％伴发间质性肺病，５４．５％伴有Ｒａｙｎａｎｄ现象，６３．６％合并关节炎，３６．４％合并恶性肿瘤。４１例Ｊｏ－１抗体阴性病人上述合并症阳性率仅分别为９．８％、１７．１％、     

盐裂皮肤-间接免疫荧光方法优化及在大疱性类天疱疮抗体检测中的应用

目的:优化盐裂皮肤-间接免疫荧光方法（IIF-SSS）,评价其在大疱性类天疱疮（BP）抗体检测中的应用。方法:通过调整试验条件,利用正常人包皮或非包皮皮肤制备盐裂底物,分为3组：传统组在4 ℃旋转皮肤48~72 h;低温浸泡组在4 ℃浸泡皮肤48~72 h;室温浸泡组在室温25 ℃（23 ℃~27 ℃）浸泡皮肤24 h...     

抗Jo-1抗体与皮肌炎和多发性肌炎临床关系的探讨

目的探讨抗Jo-1抗体与皮肌炎和多发性肌炎（PM／DM）的临床关系。方法分析16例抗Jo-1抗体阳性的多发性肌炎／皮肌炎（PM／DM）的临床特征,并与81例阴性组进行比较。结果本组中抗Jo-1抗体阳性占16．5％,抗Jo-1抗体阳性组出现肺间质病变（ILD）11例（68．75％）、肺部感染15例（93．75％）、和多关节炎／关节痛8例（50．00％）、肌肉活检异常3例（18．75％）、肌力异常4例（25．00％）、RF阳性5例（55．50％）、技工手4例（25．00％）、发热14例（87．50％）、皮肤硬肿5例（31．25％）与抗Jo-1抗体阴性组比较,差异显著（P〈0．05）。结论在多发性肌炎／皮肌炎（PM／DM）中,抗Jo—1抗体阳性者有明显的肺间质病变、肺部感染、多关节炎、RF阳性、技工手、发热、皮肤硬肿等临床特征,提高对Jo-1抗体综合征的认识,早期诊断,早期治疗,提高生存率。     

Clinical significance of antinuclear matrix antibody in serum from patients with anti-U1RNP antibody

Abstract Serum containing anti-U1RNP antibodies reacts with the nuclear matrix, the relatively insoluble component of the cell nucleus, in addition to U1RNP. In this study, we determine the serum titer and clinical correlations of antinuclear matrix antibodies in samples from patients with anti-U1RNP antibodies. The patients with anti-U1RNP antibodies were classified as having mixed connective tissue disease (MCTD, 15 patients), systemic sclerosis (SSc, 12 patients), systemic lupus erythematosus (SLE, 7 patients), and undifferentiated CTD (UCTD, 9 patients). Antinuclear matrix antibodies were detected using indirect immunofluorescence staining on HCl-treated HEp-2 cells. The antinuclear matrix antibody titer was significantly higher in serum from patients with MCTD or SSc than in serum from patients with SLE or UCTD. The antinuclear matrix antibody titer was significantly increased in serum from patients with sclerodactyly, pitting scars, contracture of the phalanges, and decreased carbon monoxide diffusion capacity. Thus, a higher titer of antinuclear matrix antibodies in serum from patients with anti-U1RNP antibodies may be associated with a clinical diagnosis of MCTD or SSc rather than a diagnosis of SLE or UCTD. Received: 6 July 1999 / Revised: 11 October 1999 / Accepted: 27 October 1999     

Local and disease control for nasal melanoma treated with radiation and concomitant anti-programmed death 1 antibody

Mucosal melanoma of the nasal cavity is a rare disease that has been consistently associated with poor outcome. While complete surgical excision offers the only prospect of a cure, it is associated with a high risk of surgical morbidity due to the challenging anatomical location, and most patients still develop incurable metastatic disease. The efficacy of immunotherapy on mucosal melanoma is lower in comparison with cutaneous melanoma, and mucosal melanoma rarely has BRAF mutations. Although preclinical data have shown that combination treatment with immune checkpoint inhibitors and radiotherapy (RT) improve the response, there have been few reports on the combination of RT and anti-programmed death 1 therapy for mucosal melanoma of the nasal cavity. We retrospectively investigated 10 cases of mucosal melanoma of the nasal cavity in which combined treatment was applied. The local control (LC) rate of the primary lesion and regional lymph nodes was favorably 100%. On the other hand, the median progression-free survival (PFS) time was 29.6 weeks (range, 2–82). The 6-month PFS rate was 60%. Although severe mucositis occurred in one patient, the incidence of treatment-related adverse events was not significantly increased. RT with anti-programmed death 1 antibody therapy for mucosal melanoma of the nasal cavity was tolerable and had the potential to improve LC and PFS.