{"title":"Clinical and morphological characteristics of hypersensitivity pneumonitis","authors":"E. V. Kusraeva","doi":"10.31088/cem2021.10.3.5-13","DOIUrl":"https://doi.org/10.31088/cem2021.10.3.5-13","url":null,"abstract":"Hypersensitivity pneumonitis (HP) is an immune-mediated disease that manifests in susceptible individu-als after exposure to a provoking inhalation factor. The literature review describes etiological factors of the disease, its epidemiology and pathogenesis, as well as clinical features of various disease courses. A new clinical and morphological classification of HP is also presented. We analyzed changes in functional tests (external respiration function), CT images, cellular components of bronchoalveolar lavages, and modern approaches to the disease treatment. The review includes detailed morphological criteria according to the new classification, which will facilitate the diagnosis by pathologists. Since the diagnosis of the condition presents significant challenges, there are histological criteria for differential diagnosis of the fibrotic HP and usual interstitial pneumonia (idiopathic pulmonary fibrosis), sarcoidosis, lymphoid interstitial pneumonia, and pulmonary manifestations of connective tissue diseases. Keywords: hypersensitivity pneumonitis, interstitial lung diseases","PeriodicalId":36062,"journal":{"name":"Clinical and Experimental Morphology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69279472","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}
P. A. Elyasin, S. Zalavina, A. Mashak, E. Ovsyanko, S. Aidagulova
{"title":"Immunohistochemical study of the effects of heavy metals on the intestinal mucosa in prepubertal rats","authors":"P. A. Elyasin, S. Zalavina, A. Mashak, E. Ovsyanko, S. Aidagulova","doi":"10.31088/cem2021.10.4.45-52","DOIUrl":"https://doi.org/10.31088/cem2021.10.4.45-52","url":null,"abstract":"Introduction. Numerous studies of pathological effects of heavy metals were mostly carried out on adult experimental animals. The aim of this work was to evaluate the markers of proliferation and apoptosis in the mucosa of the small intestine in Wistar prepubertal rats under isolated and combined exposure to cadmium and lead at subtoxic doses. Materials and methods. We used immunohistochemistry to study Ki67 and p53 expression in the mucosa of the small intestine in 40 male Wistar prepubertal rats aged 4 weeks, the animals having been exposed to isolated or combined per os subtoxic cadmium and/or lead doses for 21 days. Results. In paraffin sections, we observed a significant increase in Ki67 expression in the epithelium of the small intestine in the group of combined exposure to heavy metals compared to Ki67 expression in the control group and other groups with isolated exposure to cadmium or lead. p53 expression in the epithelium of the small intestinal crypts and villi grew in the experimental groups compared to that in the control group, the highest indices being in the combined exposure group. The number of epithelial goblet cells significantly decreased in all experimental groups compared to that in the control group, the smallest number of goblet cells being observed in isolated exposure to lead compared to that in all other groups. Conclusion. Heavy toxic metals cadmium and lead induced the proliferative activity of epithelial cells in the small intestinal mucosa combined with an increased p53 expression and reduced number of epithelial goblet cells. Keywords: small intestinal mucosa, prepubertal rats, cadmium, lead, proliferation, apoptosis, immunohis-tochemistry","PeriodicalId":36062,"journal":{"name":"Clinical and Experimental Morphology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69279589","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":"Role of skin dendritic and mast cells communications in triggering immune\u0000 reactions","authors":"N. Yaglova, S. Obernikhin, V. Yaglov, S. Nazimova","doi":"10.31088/CEM2021.10.1.5-10","DOIUrl":"https://doi.org/10.31088/CEM2021.10.1.5-10","url":null,"abstract":"Skin represents a natural barrier and a site of contact with antigens. Skin demonstrates higher intensity of immune reactions compared to other organs, which implies the additional cell interactions. Dendritic cells are traditionally considered as the main antigenpresenting cells of the skin, however, in recent years, some data on the ability of another population, mast cells, to perform antigenpresenting functions have appeared. The review presents novel data on the interaction of skin dendritic and mast cells, including formation of immune synapses, exchange of surface molecules, and transfer of secretory material. The authors have developed and presented a new concept for the initiation and modulation of immune responses provided by the functional dendritic cell–mast cell complex. Keywords: dendritic cells, mast cells, skin, immunological synapse, degranulatory synapse, immune response","PeriodicalId":36062,"journal":{"name":"Clinical and Experimental Morphology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69279685","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}