Journal of Histochemistry & Cytochemistry最新文献

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Relation Between Reactive Oxygen Species Production and Transient Receptor Potential Vanilloid1 Expression in Human Skin During Aging. 人体皮肤老化过程中活性氧生成与瞬时受体电位 Vanilloid1 表达之间的关系
IF 1.9 4区 生物学
Journal of Histochemistry & Cytochemistry Pub Date : 2024-03-01 Epub Date: 2024-03-05 DOI: 10.1369/00221554241236537
Gaia Favero, Marzia Gianò, Caterina Franco, Daniela Pinto, Cornelis J F van Noorden, Fabio Rinaldi, Rita Rezzani
{"title":"Relation Between Reactive Oxygen Species Production and Transient Receptor Potential Vanilloid1 Expression in Human Skin During Aging.","authors":"Gaia Favero, Marzia Gianò, Caterina Franco, Daniela Pinto, Cornelis J F van Noorden, Fabio Rinaldi, Rita Rezzani","doi":"10.1369/00221554241236537","DOIUrl":"10.1369/00221554241236537","url":null,"abstract":"<p><p>Skin sensitivity and impaired epidermal barrier function are associated with aging and are at least partly due to increased production of reactive oxygen species (ROS). Transient receptor potential vanilloid1 (TRPV1) is expressed in keratinocytes, fibroblasts, mast cells, and endothelial cells in skin. We investigated in skin biopsies of adult and elderly donors whether TRPV1 expression is involved in the skin aging process. We found that aging skin showed a strongly reduced epidermal thickness, strongly increased oxidative stress, protease expression, and mast cell degranulation and strongly increased TRPV1 expression both in epidermis and dermis. Based on our findings, the aging-related changes observed in the epidermis of the skin level are associated with increased ROS production, and hypothesized alterations in TRPV1 expression are mechanistically linked to this process.</p>","PeriodicalId":16079,"journal":{"name":"Journal of Histochemistry & Cytochemistry","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10956443/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140028223","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
Acellular Extrinsic Fiber Cementum Is Invariably Present in the Superficial Layer of Apical Cementum in Mouse Molar. 小鼠臼齿根尖骨水泥膜表层始终存在细胞外纤维骨水泥膜
IF 3.2 4区 生物学
Journal of Histochemistry & Cytochemistry Pub Date : 2024-02-01 Epub Date: 2024-01-30 DOI: 10.1369/00221554241229130
Hajime Iwama, Masaru Kaku, Lay Thant, Masaru Mizukoshi, Moe Arai, Yoshiki Ono, Kohei Kitami, Isao Saito, Katsumi Uoshima
{"title":"Acellular Extrinsic Fiber Cementum Is Invariably Present in the Superficial Layer of Apical Cementum in Mouse Molar.","authors":"Hajime Iwama, Masaru Kaku, Lay Thant, Masaru Mizukoshi, Moe Arai, Yoshiki Ono, Kohei Kitami, Isao Saito, Katsumi Uoshima","doi":"10.1369/00221554241229130","DOIUrl":"10.1369/00221554241229130","url":null,"abstract":"<p><p>The cementum is a highly mineralized tissue that covers the tooth root. The regional differences among the types of cementum, especially in the extrinsic fibers that contribute to tooth support, remain controversial. Therefore, this study used second harmonic generation imaging in conjunction with automated collagen extraction and image analysis algorithms to facilitate the quantitative examination of the fiber characteristics and the changes occurring in these fibers over time. Acellular extrinsic fiber cementum (AEFC) was invariably observed in the superficial layer of the apical cementum in mouse molars, indicating that this region of the cementum plays a crucial role in supporting the tooth. The apical AEFC exhibited continuity and fiber characteristics comparable with the cervical AEFC, suggesting a common cellular origin for their formation. The cellular intrinsic fiber cementum present in the inner layer of the apical cementum showed consistent growth in the apical direction without layering. This study highlights the dynamic nature of the cementum in mouse molars and underscores the requirement for re-examining its structure and roles. The findings of the present study elucidate the morphophysiological features of cementum and have broader implications for the maintenance of periodontal tissue health.</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/PMC10851881/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139575789","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
Identification of Terminal βGlcNAc on Brachyspira Species in Human Intestinal Spirochetosis. 人类肠道螺旋体病中 Brachyspira 菌种末端 βGlcNAc 的鉴定
IF 3.2 4区 生物学
Journal of Histochemistry & Cytochemistry Pub Date : 2024-02-01 Epub Date: 2024-01-08 DOI: 10.1369/00221554231222963
Hisanori Matoba, Mai Iwaya, Chifumi Fujii, Jun Nakayama
{"title":"Identification of Terminal βGlcNAc on <i>Brachyspira</i> Species in Human Intestinal Spirochetosis.","authors":"Hisanori Matoba, Mai Iwaya, Chifumi Fujii, Jun Nakayama","doi":"10.1369/00221554231222963","DOIUrl":"10.1369/00221554231222963","url":null,"abstract":"<p><p>Human intestinal spirochetosis (HIS) is a colorectal bacterial infection caused by the <i>Brachyspira</i> species. <i>Griffonia simplicifolia</i>-II (GS-II) is a lectin specific to terminal α/βGlcNAc residues. Here, we investigated terminal βGlcNAc residues in the context of HIS infection using GS-II-horseradish peroxidase staining and HIK1083 immunostaining specific to terminal αGlcNAc residues. Fourteen of 15 HIS cases were GS-II-positive on the bacterial body. No cases showed HIK1083 positivity. The percentage of bacterial bodies staining positively for GS-II based on comparison with anti-<i>Treponema</i> immunostaining was ≤30% in seven cases, 30-70% in two, and >70% in six. Of 15 HIS cases analyzed, none were comorbid with tubular adenomas, and three were comorbid with sessile serrated lesions (SSLs). To determine the species of spirochete infected, the <i>B. aalborgi</i>-specific or <i>B. pilosicoli</i>-specific NADPH oxidase genes were amplified by PCR. After direct sequencing of the PCR products, all nine cases in which PCR products were observed were found to be infected with <i>B. aalborgi</i> alone. These results indicate that the HIS bacterial body, especially of <i>B. aalborgi</i>, is characterized by terminal βGlcNAc and also indicate that terminal βGlcNAc on the HIS bacterial body is associated with HIS preference for SSLs.</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/PMC10851879/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139377802","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
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
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