Immunoglobulin G4-positive staining of orbital lesions in thyroid eye disease: Report of two cases

We report two cases with immunoglobulin G4 (IgG4)-positive staining of orbital lesions and thyroid eye disease (TED). Case 1 was a 63-year-old male with right upper eyelid swelling due to right lacrimal gland enlargement. Case 2 was a 49-year-old male with bilateral proptosis due to multiple orbital masses. Both the biopsied right lacrimal gland in Case 1 and the orbital masses on both sides in Case 2 showed infiltration of immunoglobulin-G4-positive plasma cells.     

食管癌中特异表达的人类omega蛋白(Igll3)基因的序列分析及意义

目的筛选食管癌中差异表达的基因,进一步了解食管癌发生的分子机制。方法利用荧光差异显示技术(DD-PCR)从食管癌组织相对癌旁组织中获得差异表达片段,对这些片段进行克隆和序列分析。通过在GenBank中同源性检索,查找差异片段相对应的同源基因。利用定量PCR检测验证该基因表达的差异性。设计引物获得该基因全长。结果通过DD-PCR得到3个差异片段,分别为人类10号常染色体上的开放阅读框99;人类信号转导和激活转录因子2及人类omega蛋白(Igll3)。定量PCR验证的结果表明,Igll3在食管癌组织中的表达量高于癌旁组织。设计引物得到该基因全长,测序表明该基因长为711bp,编码236aa。结论 Igll3在食管癌组织中异常表达,可能在食管癌发生过程中起着重要的作用。     

乙肝免疫球蛋白联合乙肝疫苗阻断乙肝感染父婴传播的可行性分析

目的观察乙肝疫苗与乙肝免疫球蛋白联合应用对乙肝感染父婴传播阻断的临床效果。方法2012年1月至2015年5月在湛江中心人民医院分娩的产妇及其配偶68对为研究对象,产妇均未感染乙肝病毒,配偶均为乙肝患者,随机分为观察组和对照组各34对。对照组新生儿注射乙肝疫苗,观察组在对照组基础上加用乙肝免疫球蛋白。观察两组新生儿出生体质量、Apgar评分、丙氨酸氨基转移酶(ALT)水平及乙型肝炎病毒(HBV)检测结果。结果两组新生儿出生体质量、Apgar评分以及ALT水平比较差异无统计学意义(P0.05);观察组新生儿HBsAg阳性率为5.88%(2/34),低于对照组23.53%(8/34),差异有统计学意义(P0.05);观察组新生儿HBsAb阳性率为32.35%(11/34),高于对照组11.76%(4/34),差异有统计学意义(P0.05)。结论新生儿应用乙肝疫苗联合乙肝免疫球蛋白,能够对感染乙肝病毒的父婴传播进行有效阻断,明显降低新生儿感染率。     

Diagnostic Value of Positive Findings of Toxoplasma gondii-Specific Immunoglobulin M Serum Antibody in Uveitis Patients to Confirm Ocular Toxoplasmosis

Purpose: To assess the value of positive immunoglobulin (Ig) M serum antibody (Ab) findings in uveitis patients.

Methods: We reviewed medical records of patients who had a positive serological test for Toxoplasma gondii-specific IgM Ab. Their clinical data, including history, demographic characteristics, laboratory findings, clinical findings, treatment outcomes, and recurrences, were reviewed retrospectively.

Results: Of 2919 uveitis patients who underwent a serological test for suspected ocular toxoplasmosis (OT), 18 presented with positive Ig M results. All 18 patients (100.0% specificity) were clinically diagnosed with OT. None had any retinochoroidal scar at the initial visit, indicating the OT was a recent and primary infection. However, 15 patients (83.3%) had no history suspected to account for the Toxoplasma transmission.

Conclusions: The T. gondii IgM serum Ab is a specific biomarker for diagnosis of primary OT. Epidemiological studies are warranted to investigate the non-classic transmission routes of T. gondii in OT.     

A case of Mikulicz’s disease with Th2-biased cytokine profile: possible feature discriminable from Sjögren’s syndrome

Abstract

This article concerns a male patient with Mikulicz’s disease (MD) accompanied with marked elevation of serum immunoglobulin (Ig)G4 and IgE levels. His peripheral blood mononuclear cells (PBMC) showed markedly enhanced in vitro production of interleukin (IL)-4, IL-5, IL-13, but not interferon gamma (IFN-γ) compared with patients with Sjögren’s syndrome (SS) and healthy donors, suggesting distinct Th2 bias in this MD patient. Besides the prominent infiltration of IgG4-producing plasma cells, the enhanced expression of both CD40 and CD40 ligand (CD40L) were observed in the swollen salivary gland of the MD patient, suggesting enhanced signaling pathways for the induction of IgG4 and IgE switching. Possible differences between MD and SS in light of their underlying pathogenesis are discussed.     

ANCA相关性肾小球肾炎合并IgG4相关性肾小管间质性肾炎一例

抗中性粒细胞胞质抗体（ANCA）相关性血管炎常累及肺肾等器官,该文报道1例ANCA相关性肾小球肾炎（ANCA-GN）合并IgG4相关性肾小管间质性肾炎（IgG4-TIN）病例,患者为51岁男性,以发热伴咳嗽起病,伴尿量减少,蛋白尿、血尿不明显,其血清学髓过氧化物酶滴度明显升高、核周型ANCA阳性,IgG4轻度升高（肾上腺皮质激素使用后）,肾脏病理学检查示有毛细血管袢断裂、皱缩伴新月体形成,肾间质可见较多淋巴细胞、浆细胞浸润伴轻度纤维化,免疫组织化学染色浆细胞显示以IgG⁺及IgG4⁺浆细胞为主,存在ANCA-GN合并IgG4-TIN可能,予抗感染、抗血管炎及血浆置换后患者病情好转出院。该例的诊治提示,对于不典型ANCA-GN患者如无明显血尿、蛋白尿、尿量减少等表现,需检测血清IgG4,病理上需注意观察有无IgG4-TIN特征性改变;对于临床上高度可疑的IgG4-TIN患者,还需同时排查IgG4所致的其他脏器改变,基线血清IgG4水平是IgG4相关性疾病活动、预测复发的标志物。     

Clinical significance and pathological features of ectopic lymphoid-like structures in IgG4-related tubulointerstitial nephritis

Objective To investigate the clinical significance and pathological features of lymphocytes and plasma cells infiltration and related ectopic lymphoid-like structures in IgG4-related tubulointerstitial nephritis (IgG4-TIN). Methods Complete data was collected from 24 patients with IgG4-TIN confirmed by pathology in the Peking University First Hospital. The renal specimens were examined by routine light microscopy, immunofluorescence and electron microscopy examination. In addition, immunohistochemistry was used to detect the distribution of CD20+ B lymphocytes, CD3+ T lymphocytes and CD138+ plasma cells. Results A total of 24 patients were enrolled in the study, including 21 males (87.5%), 3 females (12.5%). The age was (58.0±10.8) years (38-75 years). Pathology analysis showed ectopic lymphoid-like structures were located in 16 (66.7%) cases and Russell bodies were detected in infiltrative plasma cells of 19(79.2%) cases with IgG4-TIN. Compared with cases without Russell body formation, cases with Russell body formation in renal interstitial plasma cells were more prone to show ectopic germinal center-like structure formation (P=0.001), tubular basement membrane (TBM) electron dense deposits (P=0.040) and reduced blood C3 levels (P=0.028). Conclusions Abnormal tubulointerstitial infiltration of ectopic lymphoid-like structures and plasma cells with prominent Russell body exist in IgG4-TIN patients, which suggests the persistent activation of lymphocytes and plasma cells in renal interstitium may contribute to the pathogenesis of IgG4-TIN.