Medical Molecular Morphology最新文献

Dental pulp stem cells promote malignant transformation of oral epithelial cells through mitochondrial transfer. 牙髓干细胞通过线粒体转移促进口腔上皮细胞恶性转化

IF 1.2 4区医学

Medical Molecular Morphology Pub Date : 2024-12-01 Epub Date: 2024-08-09 DOI: 10.1007/s00795-024-00403-1

Peiqi Shen, Zeyi Ma, Xiaoqing Xu, Weiyu Li, Yaoyin Li

{"title":"Dental pulp stem cells promote malignant transformation of oral epithelial cells through mitochondrial transfer.","authors":"Peiqi Shen, Zeyi Ma, Xiaoqing Xu, Weiyu Li, Yaoyin Li","doi":"10.1007/s00795-024-00403-1","DOIUrl":"10.1007/s00795-024-00403-1","url":null,"abstract":"Oral epithelial dysplasia includes a range of clinical oral mucosal diseases with potentially malignant traits. Dental pulp stem cells (DPSCs) are potential candidates for cell-based therapies targeting various diseases. However, the effect of DPSCs on the progression of oral mucosal precancerous lesions remains unclear. Animal experiments were conducted to assess the effect of human DPSCs (hDPSCs). We measured the proliferation, motility and mitochondrial respiratory function of the human dysplastic oral keratinocyte (DOK) cells cocultured with hDPSCs. Mitochondrial transfer experiments were performed to determine the role mitochondria from hDPSCs in the malignant transformation of DOK cells. hDPSCs injection accelerated carcinogenesis in 4NQO-induced oral epithelial dysplasia in mice. Coculture with hDPSCs increased the proliferation, migration, invasion and mitochondrial respiratory function of DOK cells. Mitochondria from hDPSCs could be transferred to DOK cells, and activated mTOR signaling pathway in DOK cells. Our study demonstrates that hDPSCs activate the mTOR signaling pathway through mitochondrial transfer, promoting the malignant transformation of oral precancerous epithelial lesions.","PeriodicalId":18338,"journal":{"name":"Medical Molecular Morphology","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141913253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nodal T follicular helper cell lymphoma with aberrant CD20 expression and monoclonal TCR, IG rearrangements secondary to Classical Hodgkin Lymphoma: a case report. 结节性T滤泡辅助细胞淋巴瘤伴有CD20异常表达和单克隆TCR、IG重排，继发于典型霍奇金淋巴瘤：病例报告。

IF 1.2 4区医学

Medical Molecular Morphology Pub Date : 2024-12-01 Epub Date: 2024-07-16 DOI: 10.1007/s00795-024-00398-9

Ning Zhu, Yu Pan, Liling Song, Na Li, Xiaolong Sui, Ping Yang, Xiaoqian Liu, Li Zhang, Guohua Yu

{"title":"Nodal T follicular helper cell lymphoma with aberrant CD20 expression and monoclonal TCR, IG rearrangements secondary to Classical Hodgkin Lymphoma: a case report.","authors":"Ning Zhu, Yu Pan, Liling Song, Na Li, Xiaolong Sui, Ping Yang, Xiaoqian Liu, Li Zhang, Guohua Yu","doi":"10.1007/s00795-024-00398-9","DOIUrl":"10.1007/s00795-024-00398-9","url":null,"abstract":"Classical Hodgkin Lymphoma (CHL) is a rare malignant neoplasm of the lymphatic system. While CHL typically responds well to conventional treatments, some cases may experience relapse to other subtypes, with the development of secondary peripheral T-cell lymphoma (PTCL) being relatively uncommon. Herein, we report a rare case of nodal T follicular helper cell lymphomas,nos (nTFHL-NOS) secondary to CHL, accompanied by aberrant CD20 expression and clonal rearrangements of T-cell receptor (TCR) and immunoglobulin (IG). A 74-year-old male, was diagnosed with CHL, leaning toward the mixed cell type, 6 years ago. He received six cycles of the Adriamycin, Bleomycin, Vinblastine, Dacarbazine (ABVD) regimen, achieving complete clinical remission. The patient was admitted to our hospital due to the appearance of multiple skin nodules 66 months later. Histopathological analysis revealed nTFHL-NOS, with aberrant CD20 expression and clonal rearrangements of TCR and IG. The patient underwent two cycles of chemotherapy with brentuximab vedotin and the Gemcitabine-Oxaliplatin (G-mox) regimen, resulting in a reduction of the skin lesions to 2 cm × 1 cm. We discuss this rare case and review related literature.","PeriodicalId":18338,"journal":{"name":"Medical Molecular Morphology","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141620396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comprehensive analysis of transcription factors involved in odontoblast differentiation mechanism. 全面分析参与骨母细胞分化机制的转录因子

IF 1.2 4区医学

Medical Molecular Morphology Pub Date : 2024-12-01 Epub Date: 2024-07-11 DOI: 10.1007/s00795-024-00389-w

Haruka Nakazato, Shoko Onodera, Natsuko Aida, Masahiro Furusawa, Toshifumi Azuma

{"title":"Comprehensive analysis of transcription factors involved in odontoblast differentiation mechanism.","authors":"Haruka Nakazato, Shoko Onodera, Natsuko Aida, Masahiro Furusawa, Toshifumi Azuma","doi":"10.1007/s00795-024-00389-w","DOIUrl":"10.1007/s00795-024-00389-w","url":null,"abstract":"Primary cultured odontoblasts rapidly lose their tissue-specific phenotype. To identify transcription factors (TF) that are important for the maintenance of the odontoblast phenotype, primary cultures of C57BL/6 J mouse dental mesenchymal cells (DMC) were isolated, and expression of TF and odontoblast marker genes in cells immediately after isolation and 2 days after culture were comprehensively evaluated and compared using RNA-sequencing (RNA-seq). The expression of odontoblast markers in mouse dental mesenchymal cells decreased rapidly after isolation. In addition, the expression of Hedgehog-related, Notch-related, and immediate- early gene (IEG)-related transcription factors significantly decreased. Forced expression of these genes in lentiviral vectors, together with fibroblast growth factor 4 (FGF4), fibroblast growth factor 9 (FGF9), and the Wnt pathway activator CHIR99021, significantly induced the expression of odontogenic marker genes. These results indicate, for the first time, that Notch signaling and early genes may be important for maintaining odontoblast cultures. Furthermore, simultaneous stimulation of FGF, Wnt, Hedgehog, Notch pathways, and IEG transcription factors cooperatively promoted the maintenance of the odontoblast phenotype. These results suggest that the Hedgehog and Notch signaling pathways may play an important role in maintaining odontoblast phenotypes, in addition to FGF and Wnt signaling.","PeriodicalId":18338,"journal":{"name":"Medical Molecular Morphology","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141580196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Identification of histopathological classification and establishment of prognostic indicators of gastric adenocarcinoma based on deep learning algorithm. 基于深度学习算法的胃腺癌组织病理学分类鉴定和预后指标建立。

IF 1.2 4区医学

Medical Molecular Morphology Pub Date : 2024-12-01 Epub Date: 2024-08-01 DOI: 10.1007/s00795-024-00399-8

Zhihui Wang, Hui Peng, Jie Wan, Anping Song

{"title":"Identification of histopathological classification and establishment of prognostic indicators of gastric adenocarcinoma based on deep learning algorithm.","authors":"Zhihui Wang, Hui Peng, Jie Wan, Anping Song","doi":"10.1007/s00795-024-00399-8","DOIUrl":"10.1007/s00795-024-00399-8","url":null,"abstract":"The aim of this study is to establish a deep learning (DL) model to predict the pathological type of gastric adenocarcinoma cancer based on whole-slide images(WSIs). We downloaded 356 histopathological images of gastric adenocarcinoma (STAD) patients from The Cancer Genome Atlas database and randomly divided them into the training set, validation set and test set (8:1:1). Additionally, 80 H&E-stained WSIs of STAD were collected for external validation. The CLAM tool was used to cut the WSIs and further construct the model by DL algorithm, achieving an accuracy of over 90% in identifying and predicting histopathological subtypes. External validation results demonstrated the model had a certain generalization ability. Moreover, DL features were extracted from the model to further investigate the differences in immune infiltration and patient prognosis between the two subtypes. The DL model can accurately predict the pathological classification of STAD patients, and provide certain reference value for clinical diagnosis. The nomogram combining DL-signature, gene-signature and clinical features can be used as a prognostic classifier for clinical decision-making and treatment.","PeriodicalId":18338,"journal":{"name":"Medical Molecular Morphology","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11543764/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141860172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High ambient temperature may induce presbyopia via TRPV1 activation. 高环境温度可能会通过激活 TRPV1 引发老花眼。

IF 1.2 4区医学

Medical Molecular Morphology Pub Date : 2024-12-01 Epub Date: 2024-07-09 DOI: 10.1007/s00795-024-00391-2

Yosuke Nakazawa, Yumika Kuno, Hibiki Shimada, Noriaki Nagai, Noriko Hiramatsu, Shun Takeda, Naoki Yamamoto, Megumi Funakoshi-Tago, Hiroshi Sasaki

{"title":"High ambient temperature may induce presbyopia via TRPV1 activation.","authors":"Yosuke Nakazawa, Yumika Kuno, Hibiki Shimada, Noriaki Nagai, Noriko Hiramatsu, Shun Takeda, Naoki Yamamoto, Megumi Funakoshi-Tago, Hiroshi Sasaki","doi":"10.1007/s00795-024-00391-2","DOIUrl":"10.1007/s00795-024-00391-2","url":null,"abstract":"The prevalence of presbyopia and nuclear cataracts (NUC) is reported to be higher in tropical areas than that in other regions, suggesting a potential influence of high temperatures on lens health. Transient receptor potential vanilloid (TRPV) channels play a crucial role in detecting ambient temperatures across various species, with TRPV1 and TRPV4 expressed in lens epithelial cells. In this study, we investigated whether ambient temperatures affect TRPV1 and TRPV4 activity in the lens, potentially contributing to the development of presbyopia and NUC. We conducted experiments using cultured human lens epithelial cell lines under different temperature conditions. Our results revealed that the mitogen-activated protein kinase (MEK)/extracellular signal-regulated kinase (ERK) and p38 pathways, downstream molecules of TRPV1, were activated, while Src family kinase, a downstream molecule of TRPV4, was inhibited at 37.5 °C culture compared to 35.0 °C. Confocal microscope images demonstrated higher expression of TRPV1 in 3D-structured cells under high-temperature culture conditions. Additionally, in organ culture lenses, higher elasticity was observed at elevated temperatures compared to that at lower temperatures. These results suggest that high ambient temperatures may induce lens sclerosis via TRPV1 activation, potentially contributing to the development of presbyopia and NUC.","PeriodicalId":18338,"journal":{"name":"Medical Molecular Morphology","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141559079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Molecular and ultrastructural morphological analyses of highly metamorphosed Aspergillus fumigatus on human formalin-fixed paraffin-embedded tissue. 人福尔马林固定石蜡包埋组织上高度变态曲霉的分子和超微结构形态学分析

IF 1.2 4区医学

Medical Molecular Morphology Pub Date : 2024-12-01 Epub Date: 2024-08-14 DOI: 10.1007/s00795-024-00402-2

Kazuhiro Matsumoto, Masanori Goto, Yuki Kamikokura, Kumi Takasawa, Nobuyuki Kobayashi, Tomoyuki Aoyama, Taro Murakami, Masayo Kamikokura, Yuta Ikechi, Tomoki Kawahata, Kitaru Tanaka, Sayaka Takatori, Daisuke Fujishiro, Kensaku Okamoto, Yuichi Makino, Yuji Nishikawa, Akira Takasawa

{"title":"Molecular and ultrastructural morphological analyses of highly metamorphosed Aspergillus fumigatus on human formalin-fixed paraffin-embedded tissue.","authors":"Kazuhiro Matsumoto, Masanori Goto, Yuki Kamikokura, Kumi Takasawa, Nobuyuki Kobayashi, Tomoyuki Aoyama, Taro Murakami, Masayo Kamikokura, Yuta Ikechi, Tomoki Kawahata, Kitaru Tanaka, Sayaka Takatori, Daisuke Fujishiro, Kensaku Okamoto, Yuichi Makino, Yuji Nishikawa, Akira Takasawa","doi":"10.1007/s00795-024-00402-2","DOIUrl":"10.1007/s00795-024-00402-2","url":null,"abstract":"Invasive fungal infections including invasive pulmonary aspergillosis (IPA) generally have a poor prognosis, because the fungi spread throughout various organs. Therefore, it is important to accurately identify the fungal species for treatment. In this article, we present the results of pathological and molecular morphological analyses that were performed to elucidate the cause of respiratory failure in a patient who died despite suspicion of IPA and treatment with micafungin (MCFG). Pathological analysis revealed the existence of cystic and linear fungi in lung tissue. The fungi were identified as Aspergillus fumigatus (A. fumigatus) by partial sequencing of genomic DNA. Correlative light microscopy and electron microscopy (CLEM) analysis confirmed that fungi observed with light microscopy can also be observed with scanning electron microscopy (SEM) using formalin-fixed paraffin-embedded tissue sections. SEM revealed an atypical ultrastructure of the fungi including inhomogeneous widths, rough surfaces, and numerous cyst-like structures of various sizes. The fungi showed several morphological changes of cultured A. fumigatus treated with MCFG that were previously reported. Our results indicate that integrated analysis of ultrastructural observation by SEM and DNA sequencing may be an effective tool for analyzing fungi that are difficult to identify by conventional pathological analysis.","PeriodicalId":18338,"journal":{"name":"Medical Molecular Morphology","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141976066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Clinical and pathological analyses of 14 cases of angiomatoid fibrous histiocytoma. 14 例血管瘤样纤维组织细胞瘤的临床和病理分析。

IF 1.2 4区医学

Medical Molecular Morphology Pub Date : 2024-12-01 Epub Date: 2024-07-30 DOI: 10.1007/s00795-024-00400-4

Qiang Zeng, Jie-Zhen Li, Guo-Ping Li, Yu-Peng Chen, Fang-Ling Song, Feng Gao

{"title":"Clinical and pathological analyses of 14 cases of angiomatoid fibrous histiocytoma.","authors":"Qiang Zeng, Jie-Zhen Li, Guo-Ping Li, Yu-Peng Chen, Fang-Ling Song, Feng Gao","doi":"10.1007/s00795-024-00400-4","DOIUrl":"10.1007/s00795-024-00400-4","url":null,"abstract":"Angiomatoid fibrous histiocytoma (AFH) is a soft tissue tumor of uncertain differentiation. Although its prognosis is good, its diagnosis and differential diagnosis remain a challenge, particularly for tumors with an atypical morphology. We evaluated the clinicopathological characteristics of 14 AFH cases and examined the key factors in its diagnosis or differential diagnosis. The cohort comprised 6 men and 8 women aged 9-65 years (average age: 31.2 years). Most of the tumors (11/14, 79%) were located in soft tissues, whereas 3/14 (21%) were located in the lung (1 case) and brain (2 cases). Tumor cells were spindle-shaped to epithelioid, with a visible fibrous capsule (9/14, 64%), hemorrhagic gap (9/14, 64%), lymphocyte sleeve (7/14, 50%), necrosis (3/14, 21%), and infiltrative boundary (4/14, 29%). The tumors expressed desmin (10/14, 71%) and exhibited low levels of Ki-67. 13 cases (93%) displayed ESWSR1 gene rearrangement. At follow-up, 1 case (7%) experienced local tumor recurrence. AFH is a rare intermediate tumor. Its pathological diagnosis requires a comprehensive analysis of histological, immunophenotypic, and molecular genetic features to avoid misdiagnosis. Our study has further enriched the histological features of AFH, emphasizing the importance of differential diagnosis and providing a reference for clinical practice.","PeriodicalId":18338,"journal":{"name":"Medical Molecular Morphology","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141792807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Expression of miR-34a, RASSF1A and E-cadherin in relation to PRB in endometrioid carcinoma and its precursor. 子宫内膜样癌及其前体中 miR-34a、RASSF1A 和 E-cadherin 的表达与 PRB 的关系。

IF 1.2 4区医学

Medical Molecular Morphology Pub Date : 2024-12-01 Epub Date: 2024-07-23 DOI: 10.1007/s00795-024-00397-w

Mona Mostafa Ahmed, Amr A Awd, Muhannad Mohamed Elsayed, Basma A Ibrahim, Hanim M Abdelnour

{"title":"Expression of miR-34a, RASSF1A and E-cadherin in relation to PRB in endometrioid carcinoma and its precursor.","authors":"Mona Mostafa Ahmed, Amr A Awd, Muhannad Mohamed Elsayed, Basma A Ibrahim, Hanim M Abdelnour","doi":"10.1007/s00795-024-00397-w","DOIUrl":"10.1007/s00795-024-00397-w","url":null,"abstract":"The current study aims to evaluate the levels of miR-34a, RASSF1A, and E-cadherin in relation to the levels of isoform B of progesterone receptor (PRB) in endometrioid carcinoma (EC) and atypical hyperplasia (AEH) and their association with clinicopathological parameters. 105 cases (35 EC, 35 AEH, and 35 control) were involved in this study. Cases of AEH received treatment, and other samples were obtained after 6 months to assess the response. E-cadherin and PRB were assessed by immunohistochemistry (IHC), RASSFA methylation by MSP-PCR, and its serum level by ELISA and miR-34a via quantitative PCR. The expressions of miR-34a, RASSF1A, E-cadherin, and PRB differ among the studied groups; all were higher in normal compared with AEH and EC, with a statistically significant difference. The higher PRB expression and decreased miR-34a and RASSF1A expression were associated with resistance to hormonal therapy in AEH. High PRB in EC is associated with lower RASSFA1, E-cadherin, and miR-34a. Decreased expressions of RASSF1A, miR-34a, and E-cadherin had a significant connection to advanced stages. Expression of PRB and miR-34a and serum levels of RASSF1A predict response to treatment in cases of AEH. High PRB and low E-cadherin expression are associated with progressive disease in EC.","PeriodicalId":18338,"journal":{"name":"Medical Molecular Morphology","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141748539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hepatic adenosquamous carcinoma with sarcomatous transformation: a case report and review of the literature. 肝腺鳞癌伴肉瘤变：病例报告和文献综述。

IF 1.2 4区医学

Medical Molecular Morphology Pub Date : 2024-10-07 DOI: 10.1007/s00795-024-00406-y

Quynh Thi Nguyen, Hiep Canh Nguyen, Kenta Takahashi, Kaori Yoshimura, Hiroko Ikeda, Kazuto Kozaka, Zihan Li, Dong Thanh Le, Rui Yang, Shintaro Yagi, Kenichi Harada

{"title":"Hepatic adenosquamous carcinoma with sarcomatous transformation: a case report and review of the literature.","authors":"Quynh Thi Nguyen, Hiep Canh Nguyen, Kenta Takahashi, Kaori Yoshimura, Hiroko Ikeda, Kazuto Kozaka, Zihan Li, Dong Thanh Le, Rui Yang, Shintaro Yagi, Kenichi Harada","doi":"10.1007/s00795-024-00406-y","DOIUrl":"https://doi.org/10.1007/s00795-024-00406-y","url":null,"abstract":"Adenosquamous carcinoma (ASC) with the presence of a sarcomatous component is exceptionally uncommon in intrahepatic cholangiocarcinoma (iCCA). We report a case of hepatic ASC with rhabdoid transformation, one variation of sarcomatous change. A 72-year-old man was admitted to our hospital after being diagnosed with a 45 mm-diameter neoplastic lesion in the right hepatic duct on abdominal computed tomography. Laboratory findings showed increases in AST, ALT, ALP, gamma-GT, CA19-9 and DUPAN-II. The patient then underwent an extended right hepatectomy. Histopathologically, the tumor was composed of an ASC component within an abundant fibrous stroma and a sarcomatoid carcinoma component. By immunohistochemistry, keratin 7 and keratin 19 were expressed by all tumor cells. Expression of keratin 5/6, p40 and p63 was restricted to the squamous component. The sarcomatoid component was immunoreactive for vimentin with no loss of INI1 expression. This component also showed a loss of membranous E-cadherin expression and a reduction of membranous β-catenin expression. Staining for desmin, myoglobin and HepPar1 was negative in any tumor cells. The patient died of liver failure 3 months after surgery. This report aims to provide a better understanding of the clinicopathological characteristics and disease progression of the rare variants of iCCA to aid diagnosis and treatment.","PeriodicalId":18338,"journal":{"name":"Medical Molecular Morphology","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142391707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Is it really descemetocele? Morphology of extremely thin membrane that remained after severe corneal melting: a case report. 真的是角膜脱落症吗？严重角膜融化后残留的极薄膜的形态：病例报告。

IF 1.2 4区医学

Medical Molecular Morphology Pub Date : 2024-10-01 DOI: 10.1007/s00795-024-00405-z

Yasser Helmy Mohamed, Masafumi Uematsu, Mao Kusano, Takashi Kitaoka, Teruo Nishida

{"title":"Is it really descemetocele? Morphology of extremely thin membrane that remained after severe corneal melting: a case report.","authors":"Yasser Helmy Mohamed, Masafumi Uematsu, Mao Kusano, Takashi Kitaoka, Teruo Nishida","doi":"10.1007/s00795-024-00405-z","DOIUrl":"https://doi.org/10.1007/s00795-024-00405-z","url":null,"abstract":"The aim of this study was to report transmission electron microscopic findings of a case with whole corneal descemetocele following infective corneal ulcer for the first time in literature. A 72-year-old male patient presented with infective corneal ulcer. After resolution of the infection, corneoscleral transplantation was performed. The excised very thin corneal membrane was processed for transmission electron microscopic examination. Transmission electron microscopic examination of the specimen revealed many layered structures that consisted of two different types of cells. The first type consisted of lighter staining polygonal cells, while the second consisted of elongated cells with relatively dense staining. All cells were connected with a large number of gap or adherens junctions with intercalation of the cell membranes of adjacent cells. A haphazard distribution of cytoplasmic microfilaments were also observed in all of the cell types. There was no evidence of the presence of endothelial cells throughout the specimen. There was also no evidence of Descemet membrane presence except for a small part adjacent to iris tissue that contained some melanosomes. Although we clinically diagnosed descemetocele, Descemet membrane was not present at the electron microscopic level, and thus, the expression \"descemetocele\" is inappropriate.","PeriodicalId":18338,"journal":{"name":"Medical Molecular Morphology","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142349661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0