Medical Molecular Morphology最新文献

{"title":"The relation in MreB and intrabacterial nanotransportation system for VacA in Helicobacter pylori.","authors":"Hong Wu, Yoshihiko Fujioka, Noritaka Iwai, Shoichi Sakaguchi, Youichi Suzuki, Takashi Nakano","doi":"10.1007/s00795-024-00416-w","DOIUrl":"10.1007/s00795-024-00416-w","url":null,"abstract":"<p><p>Helicobacter pylori possesses an intrabacterial nanotransportation system (ibNoTS) for transporting VacA, CagA, and urease within the bacterial cytoplasm. This system is controlled by the extrabacterial environment. The transport routes of the system for VacA have not yet been studied in detail. In this study, we demonstrated by immunoelectron microscopy that VacA localizes closely with the MreB filament in the bacterium, and the MreB polymerization inhibitor A22 obstructs the transport of VacA by ibNoTS. These findings indicate that the route of ibNoTS for VacA is closely associated with the MreB filament Additionally, it was confirmed that VacA does not closely associate with the bacterial filament FtsZ, which is involved in the transport of the virulence factor urease, as previously suggested. We propose that the route of ibNoTS for VacA is associated with the MreB filament in H. pylori.</p>","PeriodicalId":18338,"journal":{"name":"Medical Molecular Morphology","volume":" ","pages":"126-136"},"PeriodicalIF":1.2,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142864841","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}

{"title":"Clinicopathological significance of sulfite oxidase expression in surgically resected lung adenocarcinoma.","authors":"Saeko Tokisawa, Reiichiro Kondo, Masamichi Nakayama, Sachiko Ogasawara, Kenta Murotani, Masahiro Mitsuoka, Tomoaki Hoshino, Hirohisa Yano, Jun Akiba","doi":"10.1007/s00795-024-00413-z","DOIUrl":"10.1007/s00795-024-00413-z","url":null,"abstract":"<p><strong>Aim: </strong>The coenzyme sulfite oxidase (SUOX), located in mitochondria, plays a role in redox and metabolism. Its expression has been associated with cancer progression and prognosis. Lung cancer has a high incidence rate and poor prognosis. We aim to clarify its expression in lung adenocarcinomas and investigated the utility of SUOX expression as a recurrence factor in operable lung adenocarcinoma.</p><p><strong>Methods: </strong>We used 60 formalin-fixed paraffin-embedded samples of operable primary lung adenocarcinoma between 2017 and 2018 to immunohistochemically assess SUOX expression levels. Patients were classified into a high or low SUOX expression group, and the associations of SUOX expression with clinicopathological findings and recurrence were analyzed.</p><p><strong>Results: </strong>We revealed that high SUOX expression was significantly (p < 0.05) associated with sex, low Brinkman index, histological type, histological grade and positive for epidermal growth factor receptor (EGFR) mutation. High SUOX expression (HR = 10.218, 95% CI 1.758‒59.376, p = 0.0096) and pathological Stage (HR = 7.538, 95% CI 1.95‒29.14, p = 0.0034) were independently associated with relapse free survival.</p><p><strong>Conclusion: </strong>High SUOX expression may be a new indicator of recurrence risk in surgically resected lung adenocarcinomas.</p>","PeriodicalId":18338,"journal":{"name":"Medical Molecular Morphology","volume":" ","pages":"106-113"},"PeriodicalIF":1.2,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142801492","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}

{"title":"Androgens modulate endometrial function.","authors":"Ko Yamagata, Yousuke Mizuno, Yumi Mizuno, Shunnsuke Tamaru, Takeshi Kajihara","doi":"10.1007/s00795-025-00430-6","DOIUrl":"10.1007/s00795-025-00430-6","url":null,"abstract":"<p><p>Human endometrium is the major target tissue for sex steroid hormones. The circulating steroid hormones in normal ovulatory cycles accurately control the proliferation and differentiation of the endometrial cells. Androgens, such as testosterone and 5α-dihydrotestosterone, are a type of sex steroid hormones that mainly function in the differentiation, development, and maintenance of male sexual characteristics. Although androgens are best known for their role in male reproduction, the androgen receptor is present in both male and female reproductive organs and is essential for normal reproductive function. Recently, a series of evidence suggests that androgens contribute to endometrial physiology and pathologies. However, the roles of androgens in the endometrium remain insufficiently understood, with contradictory findings being reported. This review summarizes the studies that show the role of androgens in regulating the physiological conditions of the endometrium and the implantation process, and endometrial pathology including endometriosis and others.</p>","PeriodicalId":18338,"journal":{"name":"Medical Molecular Morphology","volume":" ","pages":"93-99"},"PeriodicalIF":1.2,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12103470/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143597270","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}

{"title":"Coexistence of complete intestinal tract, prostatic tissue, prostatic urethra and bladder structure in ovarian mature cystic teratoma: a case report.","authors":"Kaho Ito, Kohei Nakamura, Takeshi Kajihara, Yu Shinozaki, Johji Imura, Hiroshi Sakuma","doi":"10.1007/s00795-024-00409-9","DOIUrl":"10.1007/s00795-024-00409-9","url":null,"abstract":"<p><p>Mature cystic teratomas (MCTs) of the ovary comprise tissues from all three germ layers. The coexistence of the complete intestinal tract, prostatic tissue, and bladder component within the same ovarian MCT is unprecedented. Here, we report the diagnosis and management of such a rare case. A 26-year-old woman presented with a right ovarian mass, which was later confirmed as an MCT by histopathological examination. The patient underwent a successful laparoscopic cystectomy with no evidence of malignancy or postoperative complications. Histological examination revealed that this MCT contained the complete organ structures including a lower intestinal tract and male genital tract with prostate, urethra, and bladder components, which is unusual. This case underscores the importance of understanding the pathogenesis of extensive organogenesis in MCTs and raises questions about the differentiation processes leading to such unique presentations.</p>","PeriodicalId":18338,"journal":{"name":"Medical Molecular Morphology","volume":" ","pages":"149-153"},"PeriodicalIF":1.2,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142623542","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}

{"title":"In vivo corneal confocal microscopy findings in cases with pterygium: a case-control study.","authors":"Halit Öcal, Erbil Seven, Serek Tekin, Muhammed Batur","doi":"10.1007/s00795-024-00412-0","DOIUrl":"10.1007/s00795-024-00412-0","url":null,"abstract":"<p><p>This study aimed to evaluate corneal findings of pterygium cases using in vivo confocal microscopy (IVCM) which is a non-invasive and repeatable method. In this case-control study, 54 patients diagnosed with pterygium and 50 healthy controls were investigated, between 2020 and 2021. After a comprehensive ophthalmological examination, the central corneas of all participants were evaluated by corneal IVCM. Surface epithelial cell, wing cells, basal epithelial cells, nerve fiber density, nerve branch density, anterior and posterior stroma keratocyte densities were measured. Corneas from cases with and without pterygium were similar in terms of age (p = 0.306) and gender (p = 0.564). No statistically significant differences were found in the epithelium cell counts including surface, wing, and basal cells between the two groups (p = 0.950, p = 0.334, and p = 0.624, respectively). No statistically significant differences were observed in subepithelial nerve fiber density (p = 0.849), nerve branch density (p = 0.752), and posterior stromal keratocyte density (p = 0.683) between corneas from cases with and without pterygium. However, corneas from cases with pterygium had significantly higher scores in anterior stromal keratocyte density than those from cases without pterygium (p = 0.045). Corneas from grades 1, 2, and 3 pterygium were similar in cell counts, anterior and posterior stromal keratocyte densities (p > 0.05). However, patients with grade 1 had significantly increased nerve fiber density (p = 0.015) and nerve branch density (p = 0.001) than those with grade 2 and grade 3 pterygium. Corneal IVCM may be useful to better understand the corneal microstructure in cases with pterygium. Comprehensive research on the subject is needed.</p>","PeriodicalId":18338,"journal":{"name":"Medical Molecular Morphology","volume":" ","pages":"100-105"},"PeriodicalIF":1.2,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142770411","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}

{"title":"HIFU induces reprogramming of the tumor immune microenvironment in a pancreatic cancer mouse model.","authors":"Toshihiro Yamaguchi, Shuji Kitahara, Aya Matsui, Jun Okamoto, Yoshihiro Muragaki, Ken Masamune","doi":"10.1007/s00795-025-00419-1","DOIUrl":"10.1007/s00795-025-00419-1","url":null,"abstract":"<p><p>This study evaluates the effects of different high-intensity focused ultrasound irradiation (HIFU) methods on local tumor suppression and systemic antitumor effects, including the abscopal effect, in a mouse model of pancreatic cancer. To ascertain the efficacy of the treatment, pancreatic cancer cells were injected into the thighs of mice and HIFU was applied on one side using continuous waves or trigger pulse waves. Then, tumor volume, tissue changes, and immune marker levels were analyzed. Both the irradiation methods suppressed tumor growth, with the trigger pulse wave showing stronger effects and the difference being significant. Tumor suppression was also observed on the non-irradiated side, suggesting an abscopal effect. These effects vary depending on the irradiation method used. We conclude that HIFU induces both local tumor suppression and a systemic immune response, suggesting its potential for combination with immunotherapy for the treatment of pancreatic cancer.</p>","PeriodicalId":18338,"journal":{"name":"Medical Molecular Morphology","volume":" ","pages":"137-148"},"PeriodicalIF":1.2,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143052984","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}

{"title":"Investigation of the molecular mechanism of quercetin in inhibiting ankylosing spondylitis ossification via the bone morphogenetic protein/smad signaling pathway.","authors":"Zhenyu Li","doi":"10.1007/s00795-024-00417-9","DOIUrl":"10.1007/s00795-024-00417-9","url":null,"abstract":"<p><p>Ankylosing spondylitis (AS) is a chronic inflammatory disease involving the spine and bone joints, which is characterized by hyperosteogeny, ossification of ligaments, and ankylosis. Quercetin is a natural polyphenolic compound with various biological activities such as antioxidant, anti-inflammatory, and anti-tumor. It was to explore the effect of quercetin on AS ossification and its molecular mechanism. In vitro culture of AS mesenchymal stem cells was conducted. Cells were treated with 0, 10, 30, 60, and 80 μM quercetin, divided into control, 10 μM, 30 μM, 60 μM, and 80 μM groups. Alkaline phosphatase (ALP) staining, Alizarin Red staining, real-time quantitative polymerase chain reaction (qRT-PCR), and Western blot (WB) were employed to investigate the effect of quercetin on the expression of osteogenic-related genes and proteins. Additionally, bone morphogenetic protein (BMP) and Smad genes were knocked out to explore quercetin's regulation of BMP/Smad. In vivo experiments were conducted using 50 mice, including 10 in the normal group. An AS model was established in 36 mice, divided into negative control (n = 18, 0.9% saline) and quercetin groups (n = 18, quercetin). Safranin O-fast green (HE) staining and MicroCT scanning were performed before and 4 weeks after injection. In the 60 μM and 80 μM quercetin groups, ALP activity, Ca²⁺ deposition area, and relative protein/mRNA levels of BMP-1, BMP-2, Smad1, Smad4, and Smad5 in AS mesenchymal stem cells were significantly lower compared to the control, 10 μM, and 30 μM groups (P < 0.05). The 80 μM group exhibited lower levels than the 60 μM group (P < 0.05). In the siRNA + 80 μM group, the reduction in mRNA expression of BMP1, BMP2, Smad1, Smad4, and Smad5 was significantly greater compared to the siRNA group and the 80 μM group (P < 0.05). At 4 weeks post-injection, mice in the quercetin group showed significantly reduced severity of articular cartilage lesions, lymphocyte infiltration, and tissue edema, with no significant increase in sacroiliac joint fusion. Quercetin downregulates the expression of BMP and Smad-related proteins, inhibiting osteogenic differentiation of AS mesenchymal stem cells and effectively reducing ALP activity and Ca²⁺ deposition levels. These findings suggest that quercetin holds potential application value in the control and treatment of AS disease.</p>","PeriodicalId":18338,"journal":{"name":"Medical Molecular Morphology","volume":" ","pages":"114-125"},"PeriodicalIF":1.2,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142895381","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}

{"title":"Ultrastructure of the small vessels in the myocardium in a patient with fatal systemic capillary leak syndrome.","authors":"Hiroaki Kawano, Koichi Kawamura, Koji Maemura, Shinji Okano","doi":"10.1007/s00795-025-00439-x","DOIUrl":"https://doi.org/10.1007/s00795-025-00439-x","url":null,"abstract":"<p><p>A 29-year-old Japanese woman was admitted to our hospital with fever, cardiogenic shock, and cardiac arrest and died 18 h after admission. The patient was diagnosed with systemic capillary leak syndrome associated with coronavirus disease 2019. Electron microscopy of the biopsied right-ventricular myocardium revealed extensive interstitial leakage of blood cells and plasma, damaged capillaries, and reticular vessel drainage into the Thebesian vein. These findings indicate that severe capillary leak and lumen occlusion due to damaged capillaries are the main features of systemic capillary leak syndrome.</p>","PeriodicalId":18338,"journal":{"name":"Medical Molecular Morphology","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143989646","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}

{"title":"Minichromosome maintenance 4 is associated with poor survival and stemness of patients with pancreatic cancer.","authors":"Yuto Fujiki, Akira Ishikawa, Narutaka Katsuya, Yuki Shiwa, Takafumi Fukui, Kazuya Kuraoka, Takeshi Sudo, Sho Tazuma, Yasutaka Ishii, Shiro Oka, Wataru Yasui, Shinji Mii","doi":"10.1007/s00795-025-00438-y","DOIUrl":"https://doi.org/10.1007/s00795-025-00438-y","url":null,"abstract":"<p><p>Pancreatic ductal adenocarcinoma (PDAC) is one of the most well-known cancer types, with a persistently poor 5-year survival rate. We previously reported MCM4 as a molecule associated with cancer stem cells; however, its role in PDAC has not been reported. Therefore, in this study, we aimed to fill this gap in the literature. We analyzed MCM4 expression in 81 PDAC samples using immunohistochemistry (IHC). The functional role of MCM4 in PDAC was investigated using RNA interference in PDAC cell lines. Additionally, a single-cell analysis was conducted by downloading data from six PDAC cases. On IHC, high MCM4 expression was observed in 42 out of 81 (51.9%) PDAC cases. MCM4-positive PDAC was significantly associated with a higher pN grade. Furthermore, high MCM4 expression was linked to a significantly poorer prognosis and was identified as an independent prognostic factor in multivariate analysis. In PDAC cell lines, MCM4 knockdown impairs cell growth and spheroid formation. Single-cell analysis also revealed that MCM4-expressing cells were located upstream of the trajectory, with a cluster showing a correlation with KIFC1, which has been reported to be associated with cancer stemness. These results indicated the significance of MCM4 expression in PDAC and its association with cancer stemness.</p>","PeriodicalId":18338,"journal":{"name":"Medical Molecular Morphology","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144022025","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}

{"title":"Effects of platelet-rich plasma, platelet-rich fibrin and concentrated growth factor on flap survival: a study in a rat dorsal cross-region perforator flap model.","authors":"Peiwen Li, Ruiqi Jin","doi":"10.1007/s00795-025-00436-0","DOIUrl":"https://doi.org/10.1007/s00795-025-00436-0","url":null,"abstract":"<p><strong>Background: </strong>With the extensive application of flap surgery in clinical practice, it has been a matter of great concern to improve the survival rate of flap surgery for a long time. This study compared and explored the effect of the three generations of platelet concentrates (PCs), including platelet-rich plasma (PRP), platelet-rich fibrin (PRF), and concentrated growth factor (CGF), on flap survival.</p><p><strong>Methods: </strong>After PRP, PRF, and CGF gels were observed by scanning electron microscope (SEM), their vascularizing effect were assessed by infrared thermal imager, flap survival experiment, arterial perfusion angiography, and immunohistochemical staining in a rat dorsal cross-region perforator flap model.</p><p><strong>Results: </strong>The fibrin of PRP gel showed irregular clumps and loose structure, while that of PRF and CGF gels formed 3D network structure with orderly arrangement and compact structure. In animal models, the use of all the three PCs can increase the number of vessels and the amount of blood perfusion in choke zones (all P < 0.05), thus improving the flap survival rate. Moreover, the effects of CGF and PRF were obviously better than those of PRP (all P < 0.05), but there was no significant difference between CGF and PRF (P > 0.05).</p><p><strong>Conclusions: </strong>PRP, PRF, and CGF all have a good effect on promoting vascularization, and can significantly improve the survival rate of dorsal cross-region perforator flap in rat model. Besides, PRF and CGF have greater potential in promoting vascularization than PRP.</p>","PeriodicalId":18338,"journal":{"name":"Medical Molecular Morphology","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144009241","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}