Acta dermatovenerologica Croatica : ADC最新文献

{"title":"The Role of Androgens and Estrogens in Hidradenitis Suppurativa - A Systematic Review.","authors":"Peter Theut Riis, Hans Christian Ring, Lotte Themstrup, Gregor Borut Jemec","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Hidradenitis suppurativa (HS) is an inflammatory skin disease. Several observations imply that sex hormones may play a role in its pathogenesis. HS is more common in women, and the disease severity appears to vary in intensity according to the menstrual cycle. In addition, parallels have been drawn between HS and acne vulgaris, suggesting that sex hormones may play a role in the condition. The role of androgens and estrogens in HS has therefore been explored in numerous observational and some interventional studies; however, the studies have often reported conflicting results. This systematic review includes 59 unique articles and aims to give an overview of the available research. Articles containing information on natural variation, severity changes during menstruation and pregnancy, as well as articles on serum levels of hormones in patients with HS and the therapeutic options of hormonal manipulation therapy have all been included and are presented in this systematic review. Our results show that patients with HS do not seem to have increased levels of sex hormones and that their hormone levels lie within the normal range. While decreasing levels of progesterone and estrogen seem to coincide with disease flares in premenopausal women, the association is speculative and requires experimental confirmation. Antiandrogen treatment could be a valuable approach in treating HS, however randomized control trials are lacking.</p>","PeriodicalId":94367,"journal":{"name":"Acta dermatovenerologica Croatica : ADC","volume":"24 4","pages":"239-249"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144510226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thin Melanoma: A Generic Term Including Four Histological Subtypes of Cutaneous Melanoma.","authors":"Luca Roncati, Teresa Pusiol, Francesco Piscioli","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Today, the scientific community is focusing on the prognostic significance of different histological subtypes of thin melanoma (1). The current staging system for melanoma of the American Joint Committee on Cancer (AJCC) uses Breslow thickness as the primary attribute: melanomas with up to 1 mm thickness is defined as thin, because they present a good prognosis after surgical excision, with a 10-year survival rate of 85-90% in case of a tumor-free margin ≥1 cm (2). There is a significant interaction between mitotic rate and Breslow depth, so the predictive value of the mitotic rate on sentinel lymph node (SLN) positivity can be dependent on Breslow thickness (3). Cutaneous melanoma generally evolves through three clearly discernible progression stages. At first, transformed melanocytes proliferate above the epidermal basement membrane (the in situ or epidermal radial growth phase); they then invade the papillary dermis (the micro-invasive radial growth phase); and subsequently acquire the capacity to grow as a well-known malignant tumor (the invasive vertical growth phase). More specifically, micro-invasive melanoma is a non-tumorigenic radial growth phase of cutaneous melanoma, which invades the superficial dermis without forming a tumor nodule or papule, in absence of regression (3). In contrast, the micro-invasive radial growth phase of cutaneous melanoma with regression will rarely metastasize and, for this reason, the lesion should be recognized and could also be categorized as a 'micro-invasive radial growth phase of uncertain tumorigenic potential' (4). The early vertical growth phase of tumorigenic melanoma is characterized by the presence of a cell cluster in the dermis that is larger than the largest cluster in the epidermis (5). This feature is typical of tumorigenicity, while the mitogenicity is documented by the observation of mitotic figures in dermal melanoma cells (5,6). The early vertical growth phase and the radial growth phase with regression have a statistical chance of distant metastases (7). Therefore, thin melanoma includes four main histological subtypes, which reflect a specific biological behavior: the in situ epidermal radial growth phase, the non-tumorigenic micro-invasive radial growth phase, the micro-invasive radial growth phase with regression of uncertain tumorigenic potential, and the tumorigenic early vertical growth phase. In conclusion, thin melanoma can be considered a generic term and its subtypes should be histologically distinguished beyond its site of origin (acral versus non-acral) because they have different prognostic relevance.</p>","PeriodicalId":94367,"journal":{"name":"Acta dermatovenerologica Croatica : ADC","volume":"24 4","pages":"169-174"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138815966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Immunohistochemical Expression of Calponin in Cutaneous Basal Cell Carcinoma.","authors":"Vladimír Bartoš, Milada Kullová","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Calponin is an actin filament-associated protein significantly involved in the regulation of the cellular motility. Some data have indicated that overproduction of calponin in basal cell carcinoma (BCC) of the skin may be responsible for local tumor invasiveness and more aggressive biological behavior. We studied the immunohistochemical expression of calponin in a set of cutaneous BCCs, in order to clarify whether the presence of calponin in cancer cells may be a predictor of invasive tumor growth. The study group consisted of 37 primary BCCs categorized into a non-infiltrative subgroup (5 superficial, 16 nodular subtypes) and infiltrative subgroup (9 nodular-infiltrative, 7 infiltrative subtypes). A specific monoclonal antibody against calponin was used for staining. Expression of calponin in tumor tissue was found in 72.9% (27/37) of the cases, though staining intensity was relatively weak. In superficial, nodular, nodular-infiltrative, and infiltrative BCC subtypes, calponin positivity was found in 80% (4/5), 75% (12/16), 66.7% (6/9), and 71.5% (5/7), respectively. We did not confirm a significant correlation between expression of calponin and given, non-infiltrative, and infiltrative BCC subgroups. Furthermore, we found seven BCCs (18.9%) with striking immunoreactivity for calponin in adjacent peritumorous stroma. There was a significant association between stromal immunoreactivity for calponin and tumor growth histomorphology being positive only in BCCs with infiltrative growth features. Our study has shown that neoplastic cells in cutaneous BCC commonly produce calponin regardless of histological subtype. Expression of calponin in tumor tissue was not associated with the aggressive tumor phenotype. However, since some BCCs with infiltrative growth patterns strongly expressed calponin in peritumorous stroma, this finding could more reliably reflect the biological behavior of cancer and should be better explained in the future. </p>","PeriodicalId":94367,"journal":{"name":"Acta dermatovenerologica Croatica : ADC","volume":"23 4","pages":"254-9"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138815963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}