{"title":"Assessment of modified Gallego's iron fuchsin and methylene blue-acid fuchsin stain in characterizing hard tissue components in calcified lesions.","authors":"Julia Thenmozhi N, Veena V Naik, Punnya V Angadi","doi":"10.1080/10520295.2025.2493904","DOIUrl":"10.1080/10520295.2025.2493904","url":null,"abstract":"<p><p>Hematoxylin and eosin (H&E) stain, the routine histological staining method, might not accurately represent the composition and properties of hard tissues. This limitation necessitates the use of advanced diagnostic methods. Methylene blue-acid fuchsin (MB-AF) and modified Gallego's iron fuchsin (MG) stains are useful for differentially staining hard tissues, such as teeth, bone, and pathological calcifications. This study aimed to evaluate and compare the efficacy of MG and MB-AF stains in lesions composed of calcified tissues. A total of 30 histopathologically confirmed cases of various lesions composed of calcified tissue, including compound odontoma (6), ossifying fibroma (6), osteosarcoma (6), osteomyelitis (6), and fibrous dysplasia (6), were chosen. Each lesion had three sections stained with MB-AF, MG, and H&E. Wilcoxon signed rank test was employed for statistical analysis. Dentin, cementum, and bone showed light green, red, and deep green hues, respectively, when stained with modified Gallego's stain. A statistically superior intensity and contrast (<i>p</i> < 0.05) was observed in the MG-stained sections as compared to those stained with MB-AF. MG stain demonstrates superior potential as a special stain for calcifications compared to MB-AF, particularly in terms of the contrast between hard tissues and the surrounding stroma in lesions composed of calcified tissue.</p>","PeriodicalId":8970,"journal":{"name":"Biotechnic & Histochemistry","volume":" ","pages":"263-269"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144092728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Joung-Hee Kim, Hee-Jung Choi, Cheorl-Ho Kim, Tae-Wook Chung, Keuk-Jun Kim
{"title":"Enhanced effect of the leaves extract from <i>Prunus persica</i> var. <i>nucipersica</i> on antioxidation, collagen synthesis, re-epithelialization and angiogenesis for the improvement of skin wound healing.","authors":"Joung-Hee Kim, Hee-Jung Choi, Cheorl-Ho Kim, Tae-Wook Chung, Keuk-Jun Kim","doi":"10.1080/10520295.2025.2513948","DOIUrl":"10.1080/10520295.2025.2513948","url":null,"abstract":"<p><p>Although <i>Prunus persica</i> var. <i>nucipersica</i> (PPN) exerts antinociceptive, antipyretic, antitumor, anti-allergic, and anti-inflammatory activities with various benefits for human health, the efficacy of the leaf extract from PPN (PPNLE) for wound healing has not been studied yet. In this study, we found that PPNLE clearly affected the scavenging of <i>in vitro</i> free radicals for wound healing. Furthermore, in fibroblast cells, PPNLE significantly resulted in the increased mRNA and protein expressions of wound healing factors, and induced migration of fibroblast cells. In addition, vascular endothelial growth factor (VEGF) secreted from fibroblasts stimulated by PPNLE had an effect on the induction of tube formation, by enhancing VEGF receptor-2 (VEGFR-2) phosphorylation and activation of VEGFR2-mediated downstream pathways such as Protein kinase B (AKT) and extracellular signal-regulated kinase (ERK) in activation of endothelial cells for angiogenesis during wound repair. Moreover, in an <i>in vivo</i> rat model, it has been shown that PPNLE markedly improved skin injury by regulating collagen deposition, re-epithelialization, and neovascularization. These results suggest that PPNLE could be developed as a drug for skin wound healing.</p>","PeriodicalId":8970,"journal":{"name":"Biotechnic & Histochemistry","volume":" ","pages":"279-290"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144282254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Comparison of the microenvironments between pilonidal sinus disease and hidradenitis suppurativa.","authors":"Nicole Lagman, Sheila Criswell","doi":"10.1080/10520295.2025.2518582","DOIUrl":"10.1080/10520295.2025.2518582","url":null,"abstract":"<p><p>Pilonidal sinus disease (PSD) is a chronic inflammatory condition thought to result from the insertion of external hairs through the epidermis, effectively leading to inflammation and cyst formation. Presenting clinical features comparable to those of PSD, hidradenitis suppurativa (HS) is also characterized as a chronic inflammatory skin disorder associated with hormonal and gene dysregulation, although the exact etiology remains unclear. Given the overlapping clinical features between PSD and HS, this study aimed to evaluate the histologic and immunohistochemical differences between PSD and HS. Using 70 patient tissues and 19 normal skin controls in formalin-fixed paraffin-embedded tissues, protein expressions of cytokeratin 5/6, KLK7, filaggrin, envoplakin, and EPHA2 were analyzed in the epithelium of PSD and HS lesions using immunohistochemistry. Additionally, iron levels, hair shaft presence, and multinucleated macrophage counts were compared, along with disease prevalence across sex and ethnicity. PSD lesions exhibited higher iron levels, and more frequent intralesional hair shafts than HS. The condition was noted more frequently in younger White males while HS was more frequently found in older African American females. The immunohistochemical assays determined that cytokeratin 5/6, KLK7, filaggrin, envoplakin, and EPHA2 increased in lesional skin. The results support the theory that the immune and epithelial response in PSD and HS are similar despite their mechanistically divergent origins.</p>","PeriodicalId":8970,"journal":{"name":"Biotechnic & Histochemistry","volume":" ","pages":"312-324"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144473984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Myocardial infarction model in rats: can crocin reverse myocardial infarction-induced cardiac hepatopathy in melatonin deficiency?","authors":"Gurkan Yigitturk, Hulya Elbe, Dilan Cetinavci, Fulden Cantas Turkis, Yasemin Bicer, Melike Karayakali, Eyup Altinoz","doi":"10.1080/10520295.2025.2510214","DOIUrl":"10.1080/10520295.2025.2510214","url":null,"abstract":"<p><p>This study investigated the impact of crocin, a carotenoid component of saffron, on liver damage induced by myocardial infarction (MI) in melatonin deficiency. A synthetic catecholamine called isoproterenol (ISO) was utilised to cause MI-like lesions in rats, simulating the symptoms of heart failure. Using 70 Wistar Albino rats, the following groups were established: (i) control, (ii) sham, (iii) pinealectomy (PNX), (iv) isoproterenol (85 mg/kg), (v) PNX + ISO, (vi) PNX + Crocin (30 days/50 mg/kg), and (vii) PNX + ISO + crocin. To evaluate liver damage, histological, immunohistochemical, and biochemical analyses were performed. MI significantly increased oxidative stress markers such as malondialdehyde and decreased antioxidant levels (glutathione, superoxide dismutase, catalase). Crocin treatment improved oxidative stress markers compared to the untreated groups. Elevated liver enzymes (aspartate aminotransferase, alanine transaminase, alkaline phosphatase) confirmed liver injury in the ISO groups. The levels of these enzymes were not substantially changed by crocin treatment. The liver tissue from the ISO and PNX groups showed moderate-to-severe damage, including inflammation, apoptosis, and hepatocyte degeneration. Crocin treatment reduced these histopathological changes. Crocin reduced the expression of Caspase-3 and increased Ki-67 expression, suggesting its potential to inhibit hepatocyte apoptosis and promote liver regeneration. Crocin treatment showed hepatoprotective effects by reducing oxidative stress, liver enzyme levels, and histopathological damage. More research is required to fully understand the mechanisms of crocin's protective actions and evaluate its clinical applicability.</p>","PeriodicalId":8970,"journal":{"name":"Biotechnic & Histochemistry","volume":" ","pages":"270-278"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144265201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ritam Chatterjee, Sukalpa Chattopadhyay, Sujata Law
{"title":"Modulation of the tumor promoting and tumor suppressing roles of ROS in hematopoietic cells of experimental leukemic mice.","authors":"Ritam Chatterjee, Sukalpa Chattopadhyay, Sujata Law","doi":"10.1080/10520295.2025.2514003","DOIUrl":"10.1080/10520295.2025.2514003","url":null,"abstract":"<p><p>Reactive oxygen species (ROS) can cause a lot of pathophysiological consequences, a phenomenon referred to as oxidative stress. With regard to carcinogenesis, ROS is described as a \"double-edged sword\" due to its condition specific role as a tumor promoter or a tumor suppressor. The current work aims to delineate the mechanistic aspect of this dual role of oxidative stress during hematopoietic malignancy, i.e., leukemia. The study involves N-N' Ethylnitrosourea (ENU) based induction of leukemia in experimental mice followed by the characterization of the disease by investigating the peripheral blood scenario, bone marrow smear study, cytochemistry and histopathology of marrow, flow cytometry based measurement of ROS, and expressional analysis of signaling molecules viz; PCNA, histone-3, CXCR-4, CXCL-12, cyclin-D1, Rb, survivin, and nestin. The result showed that the increased ROS level in leukemic marrow is associated with pathological angiogenesis along with the alteration of CXCR-4/CXCL-12/Cyclin-D axis which was found to be correlated with the hyper-proliferation of the malignant clones. On the other hand, the negation of the tumor suppressive activity of ROS in the hematopoietic compartment of leukemic marrow can be related with the up-regulation of nestin and survivin. The mechanistic study regarding oxidative stress and leukemogenesis may certainly potentiate the development of new anti-leukemic therapeutic strategies.</p>","PeriodicalId":8970,"journal":{"name":"Biotechnic & Histochemistry","volume":" ","pages":"291-302"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144301064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effects of N-acetylcysteine on rat sperm treated with hydrogen peroxide in in vitro conditions.","authors":"Fatemeh Zahaki Nosrat, Siamak Yari, Bahar Mahmoodi, Parisa Hasanein","doi":"10.1080/10520295.2025.2516582","DOIUrl":"10.1080/10520295.2025.2516582","url":null,"abstract":"<p><p>Infertility affects around 15% of couples worldwide, with male factors being responsible for nearly half of these cases. Oxidative stress is a significant contributor to male infertility, leading to damaged sperm. This research examines the protective effects of Nacetylcysteine (NAC) on sperm exposed to hydrogen peroxide (H₂O₂) induced oxidative stress in rats. Sperm samples from adult male Wistar rats were divided into four groups: control, H₂O₂, NAC, and H₂O₂+NAC. Various parameters, including sperm viability, abnormal morphology, chromatin condensation, and plasma membrane integrity were evaluated after incubation using established assays. Exposure to H₂O₂ significantly decreased sperm viability, increased the rate of abnormal morphology, heightened chromatin condensation abnormalities, and compromised plasma membrane integrity. Treatment with NAC significantly ameliorated these effects, demonstrating its protective role against oxidative damage. NAC effectively counteracts oxidative damage in sperm, improving viability, morphology, chromatin integrity, and membrane integrity. These findings demonstrate the protective effects of NAC against oxidative stress-induced sperm damage under in vitro conditions, underscoring its potential as a subject for further investigation in the context of oxidative stress-related male infertility.</p>","PeriodicalId":8970,"journal":{"name":"Biotechnic & Histochemistry","volume":" ","pages":"303-311"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144332420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Apocynin may alleviate side effects of autophagy-blocked radiotherapy through antioxidant effects.","authors":"Ayca Sezen Us, Eda Dagsuyu, Huseyin Us, Melis Cöremen, Omur Karabulut Bulan, Refiye Yanardag","doi":"10.1080/10520295.2025.2518213","DOIUrl":"https://doi.org/10.1080/10520295.2025.2518213","url":null,"abstract":"<p><p>One of the most widely used techniques for cancer treatment is radiotherapy. Autophagic pathways allow some cancer cells that are resistant to radiation therapy to survive. Inhibiting autophagy has been shown to improve radiotherapy efficacy in several cancer types. Chloroquine (CQ) is a reasonable choice that has been used for many years to treat malaria and is preferred because of its minimal side-effects. Nevertheless, the effects of coadministration of CQ with radiation on various tissues remain unclear. In this study, it was aimed to understand how CQ, used to increase the effectiveness of radiotherapy, has effects on small intestine tissue alone and together with radiotherapy and what role apocynin (APO) can play with its antioxidant character in these stress conditions. Animals were divided into eight groups. The control group received physiological saline, while the other groups received 8 Gy total body irradiation, 50 mg/kg CQ, and 20 mg/kg APO, alone and in combination. In addition to causing significant histological damage, radiation triggered autophagy and showed antiproliferative and apoptotic effects. CQ administered with radiotherapy (RAD) had antiproliferative effects and did not cause a significant change in apoptosis. Reduced glutathione level, glutathione reductase, glutathione peroxidase, glutathione S-transferase, catalase, superoxide dismutase activities, and total antioxidant status were decreased, while lipid peroxidation, total oxidant status, reactive oxygen species, tumor necrosis factor-α, nitric oxide levels, adenosine deaminase, alkaline phosphatase, trypsin, lactate dehydrogenase, sodium potassium ATPase, xanthine oxidase activities, and protein carbonyl contents were increased in the RAD, CQ, and RAD+CQ groups. Apocynin therapy reversed these effects.</p>","PeriodicalId":8970,"journal":{"name":"Biotechnic & Histochemistry","volume":" ","pages":"1-21"},"PeriodicalIF":1.6,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144526417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Seda Kırmızıkan, Betül Zehra Karip, Hakan Beyaztaş, Eray Metin Güler, Özge Pasin, Esra Çikler
{"title":"Ultrastructural testicular damage by water avoidance stress: therapeutic effects of nobiletin.","authors":"Seda Kırmızıkan, Betül Zehra Karip, Hakan Beyaztaş, Eray Metin Güler, Özge Pasin, Esra Çikler","doi":"10.1080/10520295.2025.2486454","DOIUrl":"https://doi.org/10.1080/10520295.2025.2486454","url":null,"abstract":"<p><p>We investigated the effects of nobiletin, an antioxidant, in rats with testicular damage induced by chronic water avoidance stress. Thirty male Sprague-Dawley rats were divided into five groups: Control; Nobiletin (NOB); Chronic Stress (CS); Chronic Stress+DMSO (CS+DMSO); and Chronic Stress+Nobiletin (CS+NOB). Healthy testicular morphology was seen in the Control and NOB groups. In the CS group, seminiferous tubule diameters and germinal epithelial thicknesses decreased, and basement membranes were thicker. This morphological damage was reduced in the CS+NOB group. Immunohistochemical analysis showed that anti-ZO-1 expression, which was intense in the Control and NOB groups, decreased in the CS group, and increased in CS+NOB, similar to Control and NOB. Electron microscopy indicated that the blood-testis barrier (BTB) maintained its integrity in the Control and NOB groups, lost its integrity in the CS group, and was largely preserved in CS+NOB. Biochemical analyses showed that oxidative stress markers, significantly increased in the CS group, decreased significantly in the CS+NOB group. These findings underscore the protective effect of NOB on the male reproductive system against chronic stress, suggesting that nobiletin might be a valuable supportive agent in the treatment of male infertility.</p>","PeriodicalId":8970,"journal":{"name":"Biotechnic & Histochemistry","volume":"100 4","pages":"168-178"},"PeriodicalIF":1.6,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143963978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}