大疱性类天疱疮与寻常型天疱疮皮肤细胞因子特征

大疱性类天疱疮 (ＢＰ)与寻常型天疱疮(ＰＶ)为自身免疫性大疱性皮肤病。针对半桥粒与桥粒蛋白的循环特异性抗体与皮肤组织结合致病。免疫介导的疾病常有其特征性的细胞因子产生模式。大多数自身免疫性疾病为Ｔｈ1相关性 ,以产生白介素 (ＩＬ) -2、干扰素 (ＩＦＮ) -γ与ＩＬ-1 2为特点。Ｔｈ2相关性疾病包括变应性、遗传过敏性疾病 ,则产生ＩＬ-4、ＩＬ-5、ＩＬ-1 0及ＩＬ-1 3为主。近年来发现自身免疫性大疱病水疱疱液和皮肤活检标本中存在Ｔｈ2类细胞因子。将 2 1例ＢＰ、7例ＰＶ、6例其他炎症性皮肤病纳入研究。采用免疫组化测定皮损周…     

荨麻疹

２００１０９９５慢性荨麻疹患者血清ＩＬ－４、ＩＦＮ－γ及ＩｇＥ水平观察／党倩丽（陕西省医院皮肤科）…／临床皮肤科杂志．－２０００，２９（４）．－２０８ 用ＥＬＩＳＡ法检测３８例慢性荨麻疹患者血清ＩＬ－４、ＩＦＮ－γ及ＩｇＥ水平。结果患者组ＩＬ－４、ＩｇＥ均高于对照组，有显著性差异（Ｐ＜０．０１），ＩＦＮ－γ低于对照组（Ｐ＜０．０５）。表明慢性荨麻疹患者Ｔｈ２细胞分泌因子有改变，且Ｔｈ１与 Ｔｈ２之间平衡关系可能被打破。提示Ｔｈ１和Ｔｈ２可能在慢性荨麻疹发病中起作用。表１参２（汤亚娥）２００１０９９…     

系统性红斑狼疮患者外周血单一核细胞中Th1型细胞因子的表达

目的 探讨系统性红斑狼疮（ＳＬＥ）患者中Ｔｈ１型细胞因子表达的情况。方法 用逆转录聚合酶链反应（ＲＴ－ＰＣＲ）法检测了ＳＬＥ患者外周血单一核细胞（ＰＢＭＣ）中白介素２（ＩＬ－２）ｍＲＮＡ表达（４１例）和γ干扰素（ＩＦＮ－γ）ｍＲＮＡ表达（３１例）的水平。结果 与正常人相比,活动期ＳＬＥ患者中ＩＬ－２表达水平降低者占７８．０％,ＩＦＮ－γ表达水平降低者占８３．９％。活动期ＳＬＥ组ＰＢＭＣ中ＩＬ－２和     

小鼠侵袭性肺曲霉病中局部细胞因子基因表达的变化

目的 观察侵袭性肺曲霉病（ｉｎｖａｓｉｖｅ ｐｕｌｍｏｎａｒｙ ａｓｐｅｒｇｉｌｌｏｓｉｓ，ＩＰＡ）发病过程中相关细胞因子基因表达的变化，进一步探讨其发病机制。方法：建立小鼠ＩＰＡ模型，采用平板菌落计数法比较正常组与模型组肺巨噬细胞在体外对烟曲霉孢子的杀伤活性；采用ＲＴ－ＰＣＲ检测肺组织细胞因子（ｃｙｔｏｋｉｎｅ，ＣＫ）的产生情况。结果：在模型组中，巨噬细胞对孢子的杀伤活性明显降低；感染后，模型组ＩＦＮ－γ产生较正常组明显降低，而ＩＬ－１０在感染第１天及第５天均维持高水平。结论：肺巨噬细胞功能降低，Ｔｈ１／Ｔｈ２型ＣＫ调节失衡在ＩＰＡ发病中起重要作用。     

蕈样肉芽肿／Sezary综合征中Th1和Th2型细胞因子的表达特点…

采用免疫组化和非同位素原位杂交方法检测蕈样肉芽肿／Ｓｅｚａｒｙ综合征皮损部位Ｔｈ１型和Ｔｈ２型细胞因子的表达。结果显示８例瘤前期ＭＦ和２例斑块期银屑病皮损表皮和／或真皮浸润的淋巴细胞表达ＩＬ－２和／或ＩＦＮ－γ，未见ＩＬ－４的表达，而２例进展ＭＦ、２例ＳＳ、２例急性期异位性皮炎，表皮和／或真皮浸润的淋巴细胞表达ＩＬ－４，未见ＩＬ－２，ＩＦＮ－γ的表达，本研究结果表明：具有正常细胞免疫功能和早期ＭＦ     

慢性荨麻疹患者IL—4,IL—6及IFN—γ的检测

为了了解Ｔ辅助细胞不同功能亚群在慢性荨麻疹发病机理中的作用，检测了４６例慢性荨麻疹患者的外周血单个核细胞体外培养在ＰＨＡ诱导后ＩＬ－４、ＩＦＮ－γ以及ＩＬ－６的分泌，并以２０例正常人作对照，结果发现患者的Ｔ辅助－２亚群细胞因子ＩＬ－４的产生明显高于正常对照，而Ｔ辅助－１亚九的细胞因子ＩＦＮ－γ却明显低于正常对照组，在子ＩＬ－６的产生在患者与正常人之间无明显的差别。此结果提示Ｔｈ２细胞功能的表达增加     

尖锐湿疣患者血清白介素18与γ干扰素水平的检测及其相关研究

目的 研究白介素１８（ＩＬ－１８），γ干扰素（ＩＮＦ－γ）在尖锐湿疣（ＣＡ）发病机理中的作用及它们之间的关系。方法 用双抗体夹心ＥＬＩＳＡ法检测了３６例ＣＡ患者血清ＩＬ－１８、ＩＦＮ－γ水平。结果 ＣＡ患者血清ＩＬ－１８、ＩＦＮ－γ水平均明显低于正常人对照组（分别为Ｐ〈０．０５及Ｐ〈０．０１）；ＩＬ－１８与ＩＦＮ－γ之间呈正相关（Ｐ〈０．０１）。结论 ＣＡ患者血清ＩＦＮ－γ水平低下与ＩＬ－１８相关     

白介素2激活人外周血单一核细胞抗白念珠菌活性的研究

目的 研究在体外人介素１（ＩＬ－１），重组人白介素２（ＩＬ－２），重组人γ－干扰素（ＩＦＮ－γ），重组人肿瘤坏死因子（ＴＮＦ）能否激活人外周单一核细胞（ＰＢＭＣ），使之具有抗白念珠菌活性。     

SLE患者外周血单个核细胞中IL-6 IL-10表达研究

目的 探讨系统性红斑狼疮（ＳＬＥ）患者中Ｔｈ２型细胞因子ｍＲＮＡ的表达。方法 用逆转录－多聚酶链反应（ＲＴ－ＰＣＲ）法检测了１０例正常人和１５例活动期ＳＬＥ患者外周血单个核细胞（ＰＢＭＣ）中白介素６（ＩＬ－６）和白介素１０（ＩＬ－１０）ｍＲＮＡ表达的水平。结果 与正常相比,活动期ＳＬＥ患者ＰＢＭＣ中ＩＬ－６和ＩＬ－１０ｍＲＮＡ的表达水平均增高（均Ｐ〈０．０１）。结论 ＳＬＥ患者中Ｔｈ２型细胞因子Ｉ     

甲氨喋呤对银屑病患者外周血白细胞生成IL-10和IFN-γ影响的研究

目的：观察甲氨喋呤（ＭＩＸ）对银屑病患者外周血白细胞生成细胞因子的影响,加深对ＭＴＸＩ治疗银屑病机的了解。方法：全血培养法诱导细胞因子生成,ＥＬＩＳＡ法测定ＭＴＸ对植物血凝素（ＰＨＡ）诱导银屑病患者外周血白细胞生成ＩＬ－１０和ＩＦＮ－γ的影响。结果：ＭＴＸ可明显抑制ＩＦＮ－γ的生成,对ＩＬ－１０生成的影响可表现为抑制和促进作用。但抑制程度明显低于对ＩＦＮ－γ的抑制,因而ＩＬ－１０和ＩＦＮ－γ的比率     

New fillers for the new man

ABSTRACT:  Two new collagen-based lidocaine-containing dermal fillers, ArteSense™/ArteFill™ (Artes Medical, San Diego, CA) and Evolence® (Colbar LifeScience Ltd., Herzliya, Israel), have proved to be of particular interest to men, many of whom seek a long-lasting or permanent correction. ArteFill™ has been available in the United States since 2006, and it is expected that Evolence® will reach the American market in 2008. The properties of the two products will be described, and experience based on the administration of many hundreds of syringes of both products by a Canadian dermatologist will be detailed here, with tips and precautions to optimize patient outcomes.     

Outcomes and adverse effects of ablative vs nonablative lasers for skin resurfacing: A systematic review of 1093 patients

It is generally believed that ablative laser therapies result in prolonged healing and greater adverse events when compared with nonablative lasers for skin resurfacing. To evaluate the efficacy of ablative laser use for skin resurfacing and adverse events as a consequence of treatment in comparison to other modalities, a PRISMA‐compliant systematic review (Systematic Review Registration Number: 204016) of twelve electronic databases was conducted for the terms “ablative laser” and “skin resurfacing” from March 2002 until July 2020. Studies included meta‐analyses, randomized control trials, cohort studies, and case reports to facilitate evaluation of the data. All articles were evaluated for bias. The search strategy produced 34 studies. Of 1093 patients included in the studies of interest, adverse events were reported in a total of 106 patients (9.7%). Higher rates of adverse events were described in nonablative therapies (12.2% ± 2.19%, 31 events) when compared with ablative therapy (8.28% ± 2.46%, 81 events). 147 patients (13.4%) reported no side effects, 68 (6.22%) reported expected, transient self‐resolving events, and five (0.046%) presented with hypertrophic scarring. Excluding transient events, ablative lasers had fewer complications overall when compared with nonablative lasers (2.56% ± 2.19% vs 7.48% ± 3.29%). This systematic review suggests ablative laser use for skin resurfacing is a safe and effective modality to treat a range of pathologies from photodamage and acne scars to hidradenitis suppurativa and posttraumatic scarring from basal cell carcinoma excision. Further studies are needed, but these results suggest that ablative lasers are a superior, safe, and effective modality to treat damaged skin.     

Genetic alterations in RAS‐regulated pathway in acral lentiginous melanoma

Studies integrating clinicopathological and genetic features have revealed distinct patterns of genomic aberrations in Melanoma. Distributions of BRAF or NRAS mutations and gains of several oncogenes differ among melanoma subgroups, while 9p21 deletions are found in all melanoma subtypes. In the study, status of genes involved in cell cycle progression and apoptosis was evaluated in a panel of 17 frozen primary acral melanomas. NRAS mutations were found in 17% of the tumors. In contrast, BRAF mutations were not found. Gains of AURKA gene (20q13.3) were detected in 37.5% of samples, gains of CCND1 gene (11q13) or TERT gene (5p15.33) in 31.2% and gains of NRAS gene (1p13.2) in 25%. Alterations in 9p21 were identified in 69% of tumors. Gains of 11q13 and 20q13 were mutually exclusive, and 1p13.2 gain was associated with 5p15.33. Our findings showed that alterations in RAS‐related pathways are present in 87.5% of acral lentiginous melanomas.     

Self‐resolving superficial primary cutaneous mucormycosis in a 7‐week‐old infant

A 7‐week‐old girl, born at 30 weeks' gestational age, presented to clinic for evaluation of a crop of vesicular lesions that were noted after removal of a bandage that had been in place for 4 days. A punch biopsy of the lesion revealed fungal elements that were later identified as Rhizopus spp. The lesion began to self‐resolve, and no further treatment was needed, with full resolution of the lesion by 1 month after presentation. Clinicians should be aware of the variable presentations of mucormycosis and consider fungal infection in the differential diagnosis when evaluating vulnerable patients with skin eruptions.     

Multiple New-Onset Subcutaneous Nodules of the Upper Extremity Digits: Giant Cell Tumor of Tendon Sheath and Lipoma

A black woman with the concurrent onset of two subcutaneous nodules located on the digits of her upper extremities is described. Initially, a single systemic disorder was considered; yet, the lesions differed in morphology and consistency. Microscopic examination of the nodules showed a giant cell tumor of tendon sheath and a lipoma. Although Occam's “razor” suggests that multiple lesions in the same person are more likely to represent variable manifestations of a single disorder than several different diseases in that individual, the simultaneously appearing lesions in this patient represented two different conditions.