Journal of Histochemistry & Cytochemistry最新文献

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General Control Non-derepressible 2 Alleviates Cartilage Degeneration and Inhibits NLRP3 Inflammasome Activation in Osteoarthritis. 一般控制非解压缩 2 可缓解软骨退化并抑制骨关节炎中 NLRP3 炎症小体的激活。
IF 3.2 4区 生物学
Journal of Histochemistry & Cytochemistry Pub Date : 2024-02-01 Epub Date: 2024-01-11 DOI: 10.1369/00221554231225514
Long Fang, Zhengyu Wang, Jisong Liu, Yongjie Lin, Wei Hao
{"title":"General Control Non-derepressible 2 Alleviates Cartilage Degeneration and Inhibits NLRP3 Inflammasome Activation in Osteoarthritis.","authors":"Long Fang, Zhengyu Wang, Jisong Liu, Yongjie Lin, Wei Hao","doi":"10.1369/00221554231225514","DOIUrl":"10.1369/00221554231225514","url":null,"abstract":"<p><p>This study aimed to evaluate the effects of general control non-derepressible 2 (GCN2) on osteoarthritis (OA) in vivo and in vitro. First, anterior cruciate ligament transection (ACLT)-induced rat model and interleukin (IL)-1β-induced ATDC5 chondrocyte were established. Hematoxylin and eosin staining and safranin O/fast green staining were employed for analyzing the histological changes in the rat cartilage. In addition, immunohistochemistry, quantitative real-time polymerase chain reaction, enzyme-linked immunosorbent assay, western blot, and immunofluorescence staining were employed for examining cartilage degeneration-, inflammation-, autophagy-, and NLR family pyrin domain containing 3 (NLRP3) inflammasome-associated genes expression. Moreover, 2,7-dichlorodihydrofluorescein acetoacetic acid probe was utilized for examining the intracellular reactive oxygen species. In addition, 5-ethynyl-2'-deoxyuridine assay and flow cytometry were applied for detecting chondrocyte proliferation and apoptosis IL-1β-treated ATDC5 chondrocytes. GCN2 overexpression ameliorated articular cartilage degeneration and inflammation but promoted chondrocyte autophagy in ACLT-induced OA rats. Similarly, we demonstrated that the upregulation of GCN2 could promote chondrocyte proliferation, suppress chondrocyte apoptosis, attenuate chondrocyte inflammation and extracellular matrix degradation, and promote chondrocyte autophagy. Moreover, GCN2 overexpression could inhibit the activation of NLRP3 inflammasome in IL-1β-induced ATDC5 chondrocyte. Furthermore, 3-methyladenine neutralized the protective and autophagy-promoting effects of GCN2 overexpression on ATDC5 chondrocytes. GCN2 could attenuate inflammation and cartilage degeneration, promote chondrocyte autophagy, and inhibit NLRP3 inflammasome activation in OA.</p>","PeriodicalId":16079,"journal":{"name":"Journal of Histochemistry & Cytochemistry","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10851878/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139424950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of Extracellular Matrix Remodeling in Full-thickness Skin Grafts in Mice. 评估小鼠全厚皮肤移植的细胞外基质重塑情况
IF 3.2 4区 生物学
Journal of Histochemistry & Cytochemistry Pub Date : 2024-02-01 Epub Date: 2024-01-24 DOI: 10.1369/00221554231225995
Anton Erik Tjust, Urban Hellman, Antonios Giannopoulos, Annika Winsnes, Karin Strigård, Ulf Gunnarsson
{"title":"Evaluation of Extracellular Matrix Remodeling in Full-thickness Skin Grafts in Mice.","authors":"Anton Erik Tjust, Urban Hellman, Antonios Giannopoulos, Annika Winsnes, Karin Strigård, Ulf Gunnarsson","doi":"10.1369/00221554231225995","DOIUrl":"10.1369/00221554231225995","url":null,"abstract":"<p><p>Abdominal hernia is a protruding weakness in the abdominal wall. It affects abdominal strength and life quality and can lead to complications due to intestinal entrapment. Autologous full-thickness skin graft (FTSG) has recently become an alternative material for reinforcement in the surgical repair of large abdominal hernias instead of synthetic mesh. FTSG eventually integrates with the abdominal wall, but the long-term fate of the graft itself is not fully understood. This has implications as to how these grafts should be optimally used and handled intraoperatively. This study investigates the remodeling of FTSG in either the onlay or the intraperitoneal position 8 weeks after FTSG transplantation in an experimental mouse model. There was a significant presence of fibroblasts, indicated by vimentin and S100A4 staining, but there were significant variations among animals as to how much of the graft had been remodeled into dense connective tissue. This correlated significantly with the proportion of vimentin-positive cells in the dense connective tissue. We also found that collagen hybridizing peptide staining intensity, a marker of active remodeling, was significantly associated with the proportion of S100A4-positive cells in the dense connective tissue of the FTSG.</p>","PeriodicalId":16079,"journal":{"name":"Journal of Histochemistry & Cytochemistry","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10851880/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139542494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantitative Analysis of NKX2-3 Expression in Human Colon: An Immunohistochemical Study. 人结肠中 NKX2-3 表达的定量分析:免疫组化研究
IF 3.2 4区 生物学
Journal of Histochemistry & Cytochemistry Pub Date : 2024-01-01 Epub Date: 2023-12-08 DOI: 10.1369/00221554231217336
Fanni Gábris, Béla Kajtár, Zoltán Kellermayer, Péter Balogh
{"title":"Quantitative Analysis of NKX2-3 Expression in Human Colon: An Immunohistochemical Study.","authors":"Fanni Gábris, Béla Kajtár, Zoltán Kellermayer, Péter Balogh","doi":"10.1369/00221554231217336","DOIUrl":"10.1369/00221554231217336","url":null,"abstract":"<p><p>In mice, Nkx2-3 homeodomain transcription factor defines the vascular specification of secondary and tertiary lymphoid tissues of the intestines. In human studies, polymorphisms in NKX2-3 have been identified as a susceptibility factor in inflammatory bowel diseases, whereas in mice, its absence is associated with protection against experimental colitis and enhanced intestinal epithelial proliferation. Here, we investigated the expression of NKX2-3 in normal, polyp, and adenocarcinoma human colon samples using immunohistochemistry and quantitative morphometry, correlating its expression with endothelial and mesenchymal stromal markers. Our results revealed that the expression of NKX2-3 is regionally confined to the lamina propria and lamina muscularis mucosae, and its production is restricted mostly to endothelial cells and smooth muscle cells with variable co-expression of CD34, alpha smooth muscle antigen (αSMA), and vascular adhesion protein-1 (VAP-1). The frequency of NKX2-3-positive cells and intensity of expression correlated inversely with aging. Furthermore, in most colorectal carcinoma samples, we observed a significant reduction of NKX2-3 expression. These findings indicate that the NKX2-3 transcription factor is produced by both endothelial and non-endothelial tissue constituents in the colon, and its expression changes during aging and in colorectal malignancies. <b>(J Histochem Cytochem XX: XXX-XXX, XXXX)</b>.</p>","PeriodicalId":16079,"journal":{"name":"Journal of Histochemistry & Cytochemistry","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10795564/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138806152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ADP-mediated Modulation of Intracellular Calcium Responses in Chromaffin Cells: The Role of Ectonucleoside Triphosphate Diphosphohydrolase 2 on Rat Adrenal Medulla Function. ADP 介导的绒毛膜细胞胞内钙反应调节:三磷酸异核苷二磷酸二水解酶 2 对大鼠肾上腺髓质功能的作用》(The Role of Ectonucleoside Triphosphate Diphosphohydrolase 2 on Rat Adrenal Medulla Function.
IF 3.2 4区 生物学
Journal of Histochemistry & Cytochemistry Pub Date : 2024-01-01 DOI: 10.1369/00221554231221872
Satsuki Maesawa, Takuya Yokoyama, Wakana Sakanoue, Yoshio Yamamoto, Masato Hirakawa, Hirohisa Shiraishi, Kenichi Sato, Tomoyuki Saino
{"title":"ADP-mediated Modulation of Intracellular Calcium Responses in Chromaffin Cells: The Role of Ectonucleoside Triphosphate Diphosphohydrolase 2 on Rat Adrenal Medulla Function.","authors":"Satsuki Maesawa, Takuya Yokoyama, Wakana Sakanoue, Yoshio Yamamoto, Masato Hirakawa, Hirohisa Shiraishi, Kenichi Sato, Tomoyuki Saino","doi":"10.1369/00221554231221872","DOIUrl":"10.1369/00221554231221872","url":null,"abstract":"<p><p>The present study investigated the localization and the adenosine 5'-triphosphate (ATP)-degrading function of the plasma membrane-bound ecto-nucleotidase, ectonucleoside triphosphate diphosphohydrolase 2 (NTPDase2), in the rat adrenal medulla. The effect of ATP degradation product, adenosine 5'-diphosphate (ADP), on carbachol (CCh)-induced intracellular Ca<sup>2+</sup> ([Ca<sup>2+</sup>]<sub>i</sub>) responses in adrenal chromaffin cells was examined using calcium imaging. NTPDase2-immunoreactive cells were distributed between chromaffin cells. NTPDase2-immunoreactive cells were immunoreactive for glial fibrillary acidic protein and S100B, suggesting that they were sustentacular cells. NTPDase2-immunoreactive cells surrounded chromaffin cells immunoreactive for vesicular nucleotide transporter and P2Y12 ADP-selective purinoceptors. In ATP bioluminescence assays using adrenal medullary slices, ATP was rapidly degraded and its degradation was attenuated by the NTPDase inhibitors sodium polyoxotungstate (POM-1) and 6-<i>N</i>, <i>N</i>-diethyl-d-β,γ-dibromomethylene ATP (ARL67156). ADP inhibited CCh-induced [Ca<sup>2+</sup>]<sub>i</sub> increases of chromaffin cells in adrenal medullary slices. The inhibition of CCh-induced [Ca<sup>2+</sup>]<sub>i</sub> increases by ADP was blocked by the P2Y12 purinoceptor antagonist AZD1283. CCh-induced [Ca<sup>2+</sup>]<sub>i</sub> increases were also inhibited by the P2Y1, P2Y12, and P2Y13 purinoceptor agonist 2-methylthioadenosine diphosphate trisodium (2MeSADP), in combination with the P2Y1 purinoceptor antagonist MRS2179. These results suggest that sustentacular cells express NTPDase2 to degrade ATP released from adrenal chromaffin cells, and ADP modulates the excitability of chromaffin cells via P2Y12 purinoceptors to regulate catecholamine release during preganglionic sympathetic stimuli. <b>(J Histochem Cytochem 72: 41-60, 2024)</b>.</p>","PeriodicalId":16079,"journal":{"name":"Journal of Histochemistry & Cytochemistry","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10795562/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139074321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Understanding the Structural Arrangement of Islets in Chronic Pancreatitis. 了解慢性胰腺炎患者的胰岛结构排列。
IF 3.2 4区 生物学
Journal of Histochemistry & Cytochemistry Pub Date : 2024-01-01 Epub Date: 2023-12-08 DOI: 10.1369/00221554231217552
Pondugala Pavan Kumar, Guduru Venkat Rao, Mahesh Shetty, Rebala Pradeep, Challapalli PremaVani, Mitnala Sasikala, Duvvur Nageshwar Reddy
{"title":"Understanding the Structural Arrangement of Islets in Chronic Pancreatitis.","authors":"Pondugala Pavan Kumar, Guduru Venkat Rao, Mahesh Shetty, Rebala Pradeep, Challapalli PremaVani, Mitnala Sasikala, Duvvur Nageshwar Reddy","doi":"10.1369/00221554231217552","DOIUrl":"10.1369/00221554231217552","url":null,"abstract":"<p><p>Islet transplantation has become an established method for the treatment of insulin-deficient diabetes such as type 1 and type 3C (pancreatogenic). An effective transplantation necessitates a thorough understanding of the islet architecture and related functions to improve engraftment outcomes. However, in chronic pancreatitis (CP), the structural and related functional information is inadequate. Hence, the present study is aimed to understand the cytoarchitecture of endocrine cells and their functional implications in CP with and without diabetes. Herein, a set of human pancreatic tissue specimens (normal, <i>n</i>=5 and CP, <i>n</i>=20) was collected and processed for islet isolation. Furthermore, immunohistochemistry was used to assess the vascular densities, cell mass, organization, and cell-cell interactions. The glucose-stimulated insulin release results revealed that in chronic pancreatitis without diabetes mellitus altered (CPNDA), at basal glucose concentration the insulin secretion was increased by 24.2%, whereas at high glucose concentration the insulin levels were reduced by 77.4%. The impaired insulin secretion may be caused by alterations in the cellular architecture of islets during CP progression, particularly in chronic pancreatitis with diabetes mellitus and CPNDA conditions. Based on the results, a deeper comprehension of islet architecture would be needed to enhance successful transplantation in CP patients: <b>(J Histochem Cytochem XX.XXX-XXX, XXXX)</b>.</p>","PeriodicalId":16079,"journal":{"name":"Journal of Histochemistry & Cytochemistry","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10795563/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138806159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Additional Insights Into the Role of Osteocalcin in Osteoblast Differentiation and in the Early Steps of Developing Alveolar Process of Rat Molars. 骨钙素在大鼠磨牙成骨细胞分化和牙槽突早期发育中的作用的进一步研究。
IF 3.2 4区 生物学
Journal of Histochemistry & Cytochemistry Pub Date : 2023-12-01 Epub Date: 2023-11-12 DOI: 10.1369/00221554231211630
Gisela Rodrigues da Silva Sasso, Rinaldo Florencio-Silva, José Paulo de Pizzol-Júnior, Cristiane Damas Gil, Manuel de Jesus Simões, Estela Sasso-Cerri, Paulo Sérgio Cerri
{"title":"Additional Insights Into the Role of Osteocalcin in Osteoblast Differentiation and in the Early Steps of Developing Alveolar Process of Rat Molars.","authors":"Gisela Rodrigues da Silva Sasso, Rinaldo Florencio-Silva, José Paulo de Pizzol-Júnior, Cristiane Damas Gil, Manuel de Jesus Simões, Estela Sasso-Cerri, Paulo Sérgio Cerri","doi":"10.1369/00221554231211630","DOIUrl":"10.1369/00221554231211630","url":null,"abstract":"<p><p>This study investigated whether osteocalcin (OCN) is present in osteoblast precursors and its relationship with initial phases of alveolar process formation. Samples of maxillae of 16-, 18-, and 20-day-old rat embryos (E16, E18, and E20, respectively), and 05-, 10-, and 15-day-old postnatal rats (P05, P10, and P15, respectively) were fixed and embedded in paraffin or araldite. Immunohistochemistry for osterix (Osx), alkaline phosphatase (ALP), and OCN detection was performed and the number of immunolabelled cells was computed. Non-decalcified sections were subjected to the von Kossa method combined with immunohistochemistry for Osx or OCN detection. For OCN immunolocalization, samples were fixed in 0.5% glutaraldehyde/2% formaldehyde and embedded in LR White resin. The highest number of ALP- and OCN-immunolabelled cells was observed in dental follicle of E16 specimens, mainly in basal portions of dental alveolus. In corresponding regions, osteoblasts in differentiation adjacent to von Kossa-positive bone matrix exhibited Osx and OCN immunoreactivity. Ultrastructural analysis revealed OCN immunoreactive particles inside osteoblast in differentiation, and in bone matrix associated with collagen fibrils and within matrix vesicles, at early stages of alveolar process formation. Our results indicate that OCN plays a role in osteoblast differentiation and may regulate calcium/phosphate precipitation during early mineralization of the alveolar process.</p>","PeriodicalId":16079,"journal":{"name":"Journal of Histochemistry & Cytochemistry","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10691409/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89718518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Lineage Tracing Identifies Dynamic Contribution of Endothelial Cells to Cardiac Valve Mesenchyme During Development. 谱系追踪确定内皮细胞在发育过程中对心脏瓣膜间充质的动态贡献。
IF 3.2 4区 生物学
Journal of Histochemistry & Cytochemistry Pub Date : 2023-12-01 Epub Date: 2023-11-01 DOI: 10.1369/00221554231207434
Xiaojie Yang, Furong Lu
{"title":"Lineage Tracing Identifies Dynamic Contribution of Endothelial Cells to Cardiac Valve Mesenchyme During Development.","authors":"Xiaojie Yang, Furong Lu","doi":"10.1369/00221554231207434","DOIUrl":"10.1369/00221554231207434","url":null,"abstract":"<p><p>Heart valve disease is an important cause of morbidity and mortality among cardiac patients worldwide. However, the pathogenesis of heart valve disease is not clear, and a growing body of evidence hints at the importance of the genetic basis and developmental origins of heart valve disease. Therefore, understanding the developmental mechanisms that underlie the formation of heart valves has important implications for the diagnosis, prevention, and treatment of congenital heart disease. Endothelial to mesenchymal transition is a key step in initiating cardiac valve development. The dynamic changes in the relative localization and proportion of different cell sources in the heart valve mesenchymal population are still not fully understood. Here, we used the <i>Cdh5-CreER;R26R-tdTomato</i> mouse line to trace endocardial cushion-derived endothelial cells to explore the dynamic contribution of these cells to each layer of the valve during valve development. This is beneficial for elaborating on the role of endocardial cells in the process of valve remodeling from a precise angle.</p>","PeriodicalId":16079,"journal":{"name":"Journal of Histochemistry & Cytochemistry","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10691411/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71424216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Accuracy of Ex-vivo Fluorescence Confocal Microscopy in Margin Assessment of Solid Tumors: A Systematic Review. 离体荧光共聚焦显微镜在实体肿瘤边缘评估中的准确性:系统综述。
IF 3.2 4区 生物学
Journal of Histochemistry & Cytochemistry Pub Date : 2023-12-01 Epub Date: 2023-11-15 DOI: 10.1369/00221554231212948
Matthew Au, Ricardo Almeida-Magana, Tarek Al-Hammouri, Aiman Haider, Greg Shaw
{"title":"Accuracy of Ex-vivo Fluorescence Confocal Microscopy in Margin Assessment of Solid Tumors: A Systematic Review.","authors":"Matthew Au, Ricardo Almeida-Magana, Tarek Al-Hammouri, Aiman Haider, Greg Shaw","doi":"10.1369/00221554231212948","DOIUrl":"10.1369/00221554231212948","url":null,"abstract":"<p><p>Fluorescence confocal microscopy (FCM) is a novel technology that enables rapid high-resolution digital imaging of non-formalin-fixed tissue specimens and offers real-time positive surgical margin identification. In this systematic review, we evaluated the accuracy metrics of ex vivo FCM for intraoperative margin assessment of different tumor types. A systematic search of MEDLINE via PubMed, Embase, Cochrane Central Register of Controlled Trials, Web of Science, and Scopus was performed for relevant papers (PROSPERO ID: CRD42022372558). We included 14 studies evaluating four types of microscopes in six different tumor types, including breast, prostate, central nervous system, kidney, bladder, and conjunctival tumors. Using the Quality Assessment of Diagnostic Accuracy Studies tool, we identified a high risk of bias in patient selection (21%) and index test (36%) of the included studies. Overall, we found that FCM has good accuracy metrics in all tumor types, with high sensitivity and specificity (>80%) and almost perfect concordance (>90%) against final pathology results. Despite these promising findings, the quality of the available evidence and bias concerns highlight the need for adequately designed studies to further define the role of ex vivo FCM in replacing the frozen section as the tool of choice for intraoperative margin assessment.</p>","PeriodicalId":16079,"journal":{"name":"Journal of Histochemistry & Cytochemistry","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10691410/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134649084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Immunohistochemical Study of Airways Fibrous Remodeling in Smoking Mice. 吸烟小鼠气道纤维重塑的免疫组织化学研究。
IF 3.2 4区 生物学
Journal of Histochemistry & Cytochemistry Pub Date : 2023-11-01 Epub Date: 2023-10-11 DOI: 10.1369/00221554231204926
Emilia Balzano, Giovanna De Cunto, Chiara Goracci, Barbara Bartalesi, Eleonora Cavarra, Giuseppe Lungarella, Monica Lucattelli
{"title":"Immunohistochemical Study of Airways Fibrous Remodeling in Smoking Mice.","authors":"Emilia Balzano,&nbsp;Giovanna De Cunto,&nbsp;Chiara Goracci,&nbsp;Barbara Bartalesi,&nbsp;Eleonora Cavarra,&nbsp;Giuseppe Lungarella,&nbsp;Monica Lucattelli","doi":"10.1369/00221554231204926","DOIUrl":"10.1369/00221554231204926","url":null,"abstract":"<p><p>The fibrotic remodeling in chronic obstructive pulmonary disease (COPD) is held responsible for narrowing of small airways and thus for disease progression. Oxidant damage and cell senescence factors are recently involved in airways fibrotic remodeling. Unfortunately, we have no indications on their sequential expression at anatomical sites in which fibrotic remodeling develops in smoking subjects. Using immunohistochemical techniques, we investigated in two strains of mice after cigarette smoke (CS) exposure what happens at various times in airway areas where fibrotic remodeling occurs, and if there also exists correspondence among DNA damage induced by oxidants, cellular senescence, the presence of senescence-secreted factors involved in processes that affect transcription, metabolism as well as apoptosis, and the onset of fibrous remodeling that appears at later times in mice exposed to CS. A clear positivity for fibrogenic cytokines TGF-β, PDGF-B, and CTGF, and for proliferation marker PCNA around airways that will be remodeled is observed in both strains. Increased expression of p16<sup>ink4A</sup> senescence marker and MyoD is also seen in the same areas. p16<sup>ink4A</sup> and MyoD can promote cell cycle arrest, terminal differentiation of myofibroblasts, and can oppose their dedifferentiation. Of interest, an early progressive attenuation of SIRT-1 is observed after CS exposure. This intracellular regulatory protein can reduce premature cell senescence. These findings suggest that novel agents, which promote myofibroblast dedifferentiation and/or the apoptosis of senescent cells, may dampen progression of airway changes in smoking COPD subjects.</p>","PeriodicalId":16079,"journal":{"name":"Journal of Histochemistry & Cytochemistry","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10617442/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41203279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hyperspectral Raman Imaging for Automated Recognition of Human Renal Amyloid. 用于自动识别人类肾脏淀粉样蛋白的高光谱拉曼成像。
IF 3.2 4区 生物学
Journal of Histochemistry & Cytochemistry Pub Date : 2023-11-01 Epub Date: 2023-10-13 DOI: 10.1369/00221554231206858
Jeong Hee Kim, Chi Zhang, C John Sperati, Ishan Barman, Serena M Bagnasco
{"title":"Hyperspectral Raman Imaging for Automated Recognition of Human Renal Amyloid.","authors":"Jeong Hee Kim, Chi Zhang, C John Sperati, Ishan Barman, Serena M Bagnasco","doi":"10.1369/00221554231206858","DOIUrl":"10.1369/00221554231206858","url":null,"abstract":"<p><p>In the clinical setting, routine identification of the main types of tissue amyloid deposits, light-chain amyloid (AL) and serum amyloid A (AA), is based on histochemical staining; rarer types of amyloid require mass spectrometry analysis. Raman spectroscopic imaging is an analytical tool, which can be used to chemically map, and thus characterize, the molecular composition of fluid and solid tissue. In this proof-of-concept study, we tested the feasibility of applying Raman spectroscopy combined with artificial intelligence to detect and characterize amyloid deposits in unstained frozen tissue sections from kidney biopsies with pathologic diagnosis of AL and AA amyloidosis and control biopsies with no amyloidosis (NA). Raman hyperspectral images, mapped in a 2D grid-like fashion over the tissue sections, were obtained. Three machine learning-assisted analysis models of the hyperspectral images could accurately distinguish AL (types λ and κ), AA, and NA 93-100% of the time. Although very preliminary, these findings illustrate the potential of Raman spectroscopy as a technique to identify, and possibly, subtype renal amyloidosis.</p>","PeriodicalId":16079,"journal":{"name":"Journal of Histochemistry & Cytochemistry","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10617441/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41203278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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