Tissue & cell最新文献

{"title":"Mastocytosis and intraepithelial lymphocytosis in the ileum and colon characterize chronic Toxoplasma gondii infection in mice","authors":"Aline Aguiar ,&nbsp;Andressa Sulamita Siqueira Menezes de Brito ,&nbsp;Amanda Gubert Alves dos Santos ,&nbsp;Paulo da Silva Watanabe ,&nbsp;Roberto Kenji Nakamura Cuman ,&nbsp;Aline Rosa Trevizan ,&nbsp;Lainy Leiny de Lima ,&nbsp;Ciomar Aparecida Bersani-Amado ,&nbsp;Jaqueline de Carvalho Rinaldi ,&nbsp;Debora de Mello Gonçales Sant´Ana ,&nbsp;Gessilda de Alcantara Nogueira-Melo","doi":"10.1016/j.tice.2024.102533","DOIUrl":"10.1016/j.tice.2024.102533","url":null,"abstract":"<div><p><em>Toxoplasma gondii</em> is the causative agent of toxoplasmosis, a common zoonotic disease affecting vertebrates with high global incidence. For the parasite to disseminate throughout the body, it crosses the intestinal barrier, triggering inflammatory reactions. This study aimed to assess the tissue response in the ileum and colon of mice following chronic infection with <em>T. gondii</em>. Fourteen mice were divided into two groups: the infected group received 1000 <em>T. gondii</em> oocysts via gavage, and after 60 days, the mice were euthanized. The ileum and colon were collected and processed for histological analysis, inflammatory marker measurement and myenteric neuron analysis. Chronic infection resulted in a significant increase in intraepithelial lymphocytes and mast cells, as well as morphometric changes such as increased total intestinal wall thickness of the ileum, crypt depth, collagen fiber area, and a decrease in myeloperoxidase activity, without altering nitric oxide levels. While the number of myenteric neurons remained unchanged, there was an increase in vasoactive intestinal peptide expression. These results suggest persistence intestinal inflammatory stimuli in chronic <em>T. gondii</em> infection.</p></div>","PeriodicalId":23201,"journal":{"name":"Tissue & cell","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142088669","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":"BRD4 absence inactivates endoplasmic reticulum stress to retard dehydroepiandrosterone-triggered ovarian granular cell apoptosis in polycystic ovary syndrome via GRP78","authors":"Yi Zhang ,&nbsp;Jianjun Wang","doi":"10.1016/j.tice.2024.102531","DOIUrl":"10.1016/j.tice.2024.102531","url":null,"abstract":"<div><p>Polycystic ovary syndrome (PCOS) is a hormonal disorder and significantly affects reproductive and metabolic function. Bromodomain-containing protein 4 (BRD4) is reported to promote ovarian fibrosis in PCOS. The present work was conducted to investigate the detailed role of BRD4 and the corresponding functional mechanism in PCOS. Functional experiments including CCK-8 method, EDU staining and TUNEL staining were used to detect the key cellular processes. Western blot examined the expression of BRD4, apoptosis- and endoplasmic reticulum stress (ERS)-associated proteins. HDOCK server predicted the binding of BRD4 with Glucose-Regulated Protein 78 (GRP78), which was validated by Co-IP assay. BRD4 expression was increased and ERS was activated in dehydroepiandrosterone (DHEA)-induced KGN cells. Inhibition of BRD4 improved the viability whereas it inhibited the apoptosis and ERS of KGN cells induced by DHEA. In addition, BRD4 bound to GRP78. GRP78 elevation or ERS activator tunicamycin (TM) partly abolished the impacts of BRD4 silencing on the ERS, proliferation and apoptosis in DHEA-treated KGN cells. Anyway, knockdown of BRD4 may reduce DHEA-induced ovarian granular cell damage in PCOS via inactivating GRP78-mediated ERS.</p></div>","PeriodicalId":23201,"journal":{"name":"Tissue & cell","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142099127","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":"Therapeutic effects of a new bithiophene against aluminum -induced Alzheimer’s disease in a rat model: Pathological and ultrastructural approach","authors":"Kholoud AbdEl-Raouf,&nbsp;Monir A. El-Ganzuri,&nbsp;Wael M. El-Sayed","doi":"10.1016/j.tice.2024.102529","DOIUrl":"10.1016/j.tice.2024.102529","url":null,"abstract":"<div><p>Alzheimer’s disease (AD) remains of unknown etiology and lacks a cure. This study aimed to evaluate the therapeutic potential of a novel bithiophene derivative at two doses against AlCl₃-induced AD in a rat model. Adult male rats (<em>Rattus norvegicus</em>) were divided into six groups (n=6): Group one consisted of naïve animals, group two received bithiophene (1 mg/kg) every other day for 30 days, and groups 3–6 were subjected to AlCl₃ (100 mg/kg, equivalent to 20.23 mg Al³⁺) for 45 consecutive days. Groups four and five received low (0.5 mg/kg) or high (1 mg/kg) doses of bithiophene, respectively. Group six received memantine (20 mg/kg) daily for 30 days. All treatments were administered orally. Aluminum exposure resulted in severe degeneration of both histological and ultrastructural aspects of cells. Administration of the low dose of bithiophene significantly restored the number of CA1 pyramidal cells and the thickness of the stratum granulosum of the dentate gyrus. However, the high dose of bithiophene increased viable CA1 pyramidal cell numbers significantly without restoring the thickness of the stratum granulosum or reducing vacuolization or pyknotic changes. The low dose of bithiophene restored the normal histological and cytological structure of both cortical and hippocampal neurons affected by dementia. Further investigation is required to explore the molecular mechanisms underlying the ameliorative effects on Alzheimer’s disease-induced deteriorations in the cortex and hippocampus.</p></div>","PeriodicalId":23201,"journal":{"name":"Tissue & cell","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142049661","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":"Histological evaluation of renal progenitor/stem cells, renal mesenchymal stem-like cells, and endothelial progenitor cells in chronic kidney disease and end-stage renal disease, and molecular docking analysis of drug-receptor interactions","authors":"Alireza Afshar ,&nbsp;Arezoo Khoradmehr ,&nbsp;Afshin Zare ,&nbsp;Nahid Basouli ,&nbsp;Mohammadreza Keshtkar ,&nbsp;Iraj Nabipour ,&nbsp;Mahdi Mahdipour ,&nbsp;Mehdi Mahmoudpour ,&nbsp;Asset A. Kaliyev ,&nbsp;Nadiar M. Mussin ,&nbsp;Akmaral Baspakova ,&nbsp;Amin Tamadon","doi":"10.1016/j.tice.2024.102527","DOIUrl":"10.1016/j.tice.2024.102527","url":null,"abstract":"<div><p>Chronic kidney disease (CKD) and end-stage renal disease (ESRD) are prevalent and debilitating conditions with a significant impact on patients' quality of life. In this study, we conducted a comprehensive investigation into the histological characteristics of renal progenitor/stem cells (RPCs), renal mesenchymal stem-like cells, and endothelial progenitor cells (EPCs) in CKD and ESRD patients. Additionally, we performed a molecular docking analysis to explore potential drug-receptor interactions involving common medications prescribed to CKD patients. Our histological examination revealed a noteworthy increase in the number of CD24- and CD133-positive cells in CKD and ESRD patients, representing RPCs. These cells are implicated in kidney repair and regeneration, underscoring their potential role in CKD management. Moreover, we observed an elevation in the number of EPCs within the kidneys of CKD and ESRD patients, suggesting a protective role of EPCs in kidney preservation. The molecular docking analysis unveiled intriguing insights into potential drug interventions. Notably, digoxin exhibited the highest in-silico binding affinity to numerous receptors associated with the functions of RPCs, renal mesenchymal stem-like cells, and EPCs, emphasizing the potential multifaceted effects of this cardiac glycoside in CKD patients. Other drugs, including apixaban, glimepiride, and glibenclamide, also displayed strong in-silico affinities to specific receptors, indicating their potential influence on various renal cell functions. In conclusion, this study provides valuable insights into the histological alterations in renal cell populations in CKD and ESRD patients and underscores the potential roles of RPCs and EPCs in kidney repair and preservation. The molecular docking analysis reveals the complex interactions between common drugs and renal cells, suggesting the need for further in-vitro and in-vivo research to fully understand these relationships. These findings contribute to our understanding of CKD and offer new avenues for research into potential therapeutic interventions.</p></div>","PeriodicalId":23201,"journal":{"name":"Tissue & cell","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142049656","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":"Farnesol attenuates cadmium-induced kidney injury by mitigating oxidative stress, inflammation and necroptosis and upregulating cytoglobin and PPARγ in rats","authors":"Reem S. Alruhaimi ,&nbsp;Emad H.M. Hassanein ,&nbsp;Ahmad F. Ahmeda ,&nbsp;Ahmed M. Atwa ,&nbsp;Sulaiman M. Alnasser ,&nbsp;Ghadir A. Sayed ,&nbsp;Meshal Alotaibi ,&nbsp;Mohammed A. Alzoghaibi ,&nbsp;Ayman M. Mahmoud","doi":"10.1016/j.tice.2024.102526","DOIUrl":"10.1016/j.tice.2024.102526","url":null,"abstract":"<div><p>Heavy metals are environmental pollutants that can harm animals and humans even at low concentrations. Cadmium (Cd) is known for its serious health effects on different organs and its toxicity is associated with oxidative stress (OS) and inflammation. Farnesol (FAR), a sesquiterpene alcohol found in many vegetables and fruits, possesses promising anti-inflammatory and antioxidant activities. This study evaluated the effect of FAR on Cd-induced kidney injury, pinpointing its effect of the redox status, inflammation, fibrosis and necroptosis. Rats in this study received FAR for 14 days and Cd on day 7. Elevated serum creatinine, urea and uric acid, and several kidney histopathological alterations were observed in Cd-administered rats. Cd increased MDA, decreased antioxidants, downregulated PPARγ and upregulated NF-κB p65, IL-6, TNF-α, and IL-1β. Necroptosis mediators (RIP1, RIP3, MLKL, and caspase-8) and α-SMA were upregulated, and collagen deposition was increased in Cd-administered rats. FAR ameliorated kidney injury markers and tissue damage, attenuated OS, suppressed NF-κB and inflammatory mediators, and enhanced antioxidants. In addition, FAR suppressed RIP1, RIP3, MLKL, caspase-8, and α-SMA, and enhanced kidney cytoglobin and PPARγ. In conclusion, FAR protects against Cd nephrotoxicity by suppressing OS, inflammatory response and necroptosis, effects associated with enhanced antioxidants, cytoglobin, and PPARγ.</p></div>","PeriodicalId":23201,"journal":{"name":"Tissue & cell","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142049660","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":"Identification of microRNAs expressed in an animal model of periodontal disease and their impact on pathological processes","authors":"Kelly de Almeida ,&nbsp;Priscilla Câmara ,&nbsp;Gabriela Camargo ,&nbsp;Tiago Pereira ,&nbsp;André Vieira ,&nbsp;Iscia Lopes-Cendes ,&nbsp;Patrícia Severino ,&nbsp;Eliana B. Souto ,&nbsp;Aislan Pascoal ,&nbsp;Vinicius Pascoal","doi":"10.1016/j.tice.2024.102525","DOIUrl":"10.1016/j.tice.2024.102525","url":null,"abstract":"<div><p>MicroRNAs represent a class of small RNAs that act to silence genes post-transcriptionally by inhibiting the translation of target messenger RNAs, and this study aimed to understand how miRNAs influence the set-up of periodontal disease. Periodontitis was induced by inserting a ligature into the left first mandibular molar in a rat model, which was kept for the entire 56 days-time of experiment. After 56 days post-periodontitis induction, the histopathological analysis showed an apical extension of the junctional epithelium, with areas of hyperplasia, exocytosis, and a mixed inflammatory infiltrate with a predominance of neutrophils, lymphocytes, and eventual plasma cells in the deeper layers. The cement surface showed areas of irregularity, covered by cementoblasts and irregular surfaces, confirming the set-up of periodontitis. In the sequencing analysis, 26,404 genes were identified, with 132 reaching statistical significance. Among genes with a statistical difference, 18 were found to encode for microRNAs. The identified microRNAs are primarily involved in bone remodeling by acting on fibroblast growth factors, and collagen production. These outcomes demonstrate a signaling role in bone resorption, which is consistent with the histopathological observations that show the installation of inflammation with epithelial migration and the beginning of the repair process, with cementum resorption. The disclosure of how miRNAs may influence the maintaining of periodontal disease will help the development of new dental materials for the prophylaxis and treatment of alveolar bone resorption.</p></div>","PeriodicalId":23201,"journal":{"name":"Tissue & cell","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S004081662400226X/pdfft?md5=a96de5da21161464a1a407d467ea59fc&pid=1-s2.0-S004081662400226X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142044452","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}

{"title":"Umbilical cord mesenchymal stem cells: A powerful fighter against colon cancer?","authors":"Leila Kalantari ,&nbsp;Ashkan Hajjafari ,&nbsp;Pouya Goleij ,&nbsp;Aryan Rezaee ,&nbsp;Parsa Amirlou ,&nbsp;Shirin Farsad ,&nbsp;Hassan Foroozand ,&nbsp;Reza Arefnezhad ,&nbsp;Fatemeh Rezaei-Tazangi ,&nbsp;Saleheh Jahani ,&nbsp;Taha Yazdani ,&nbsp;Ahmad Nazari","doi":"10.1016/j.tice.2024.102523","DOIUrl":"10.1016/j.tice.2024.102523","url":null,"abstract":"<div><p>Colon cancer (CC) stands as one of the most common malignancies related to the gastrointestinal system, whose increasing incidence and death rates have been reported all over the world. Standard treatments for fighting cancers like CC comprise surgical approaches, chemotherapy, and radiotherapy, which are suggested by clinicians according to patients’ conditions and disease stages. However, patients who utilize these modalities may suffer from serious side effects and adverse outcomes, for example, toxicity and tumor recurrence, as well as a low 5-year survival rate. The present shreds of evidence showed that mesenchymal stem cells (MSCs) can have a suitable capacity for treating different health problems, especially neoplasms. These multipotent stem cells can be isolated from several sources, such as the umbilical cord, bone marrow, adipose tissue, and placenta. Among these mesenchymal sources, umbilical cord-MSCs have gathered much attention in scientific societies due to their advantages (e.g., low immunogenicity, lack of ethical problems, and easy collection). These days, the efficacy of umbilical cord-MSCs and umbilical cord-MSCs-based strategies, such as conditioned medium, extracellular vesicles, and exosomes, on CC have been explored, and promising findings have been stated. Therefore, in this review, we aimed to summarize and debate evidence regarding the effects of UC-MSCs and their related products on CC with a focus on molecular and cellular mechanisms involved in its treatment and pathogenesis of this malignant tumor.</p></div>","PeriodicalId":23201,"journal":{"name":"Tissue & cell","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141998075","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":"Astragaloside IV inhibits the proliferation, migration, invasion, and epithelial-mesenchymal transition of oral cancer cells by aggravating autophagy","authors":"Weijia Yin,&nbsp;Xiangling Liao,&nbsp;Jieli Sun,&nbsp;Qu Chen,&nbsp;Shan Fan","doi":"10.1016/j.tice.2024.102524","DOIUrl":"10.1016/j.tice.2024.102524","url":null,"abstract":"<div><p>Oral cancer is one usual tumor that sorely affects the health of people and even result into death. Astragaloside IV (AS-IV) is one of the major components of <em>Astragalus membranaceus</em> extract, and has been identified to exhibit ameliorative functions in some cancers. Nevertheless, the regulatory impacts and correlative pathways of AS-IV in oral cancer remain vague. In this study, it was discovered that cell growth was gradually weakened with the increased dose of AS-IV (25, 50 and 100 μM). Additionally, it was uncovered that AS-IV restrained the EMT progress in oral cancer. The cell migration and invasion abilities were both gradually alleviated after AS-IV treatment in a dose-dependent manner. Moreover, AS-IV accelerated autophagy through intensifying LC3II/LC3I level and LC3B fluorescence intensity. At last, it was clarified that AS-IV triggered the AMPK pathway and retarded the AKT/mTOR pathway. In conclusion, AS-IV restrained cell proliferation, migration, invasion, and epithelial-mesenchymal transition (EMT) progress in oral cancer by aggravating autophagy through modulating the AMPK and AKT/mTOR pathways. This work may offer novel evidence on AS-IV in the treatment of oral cancer.</p></div>","PeriodicalId":23201,"journal":{"name":"Tissue & cell","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142013001","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":"B7-H3 promotes the migration and invasion of colorectal cancer cells via regulating the actin cytoskeleton and RhoA/ROCK1/LIMK1 signaling pathway","authors":"Anjing Zhao ,&nbsp;Xingchao Zhu ,&nbsp;Hongya Wu ,&nbsp;Jiayu Wang ,&nbsp;Mengting Zhang ,&nbsp;Jingrong Xiang ,&nbsp;Suhua Xia ,&nbsp;Tongguo Shi ,&nbsp;Qinhua Xi","doi":"10.1016/j.tice.2024.102518","DOIUrl":"10.1016/j.tice.2024.102518","url":null,"abstract":"<div><h3>Background and aims</h3><p>Aberrant expression of B7 homolog 3 protein (B7-H3) has been detected in various cancers including colorectal cancer (CRC) and implicated in modulating multiple biological functions of CRC cells. However, its role in CRC metastasis has not yet been determined. This study aims to explore and unravel the underlying mechanisms through which B7-H3 contributes to migration, invasion and actin cytoskeleton in CRC.</p></div><div><h3>Methods</h3><p>The expression of B7-H3 and LIMK1 in CRC tumor samples was determined by IHC staining. Transwell and F-actin immunofluorescence staining assays were performed to explore the role of B7-H3 in migration, invasion and actin filament accumulating of CRC cells. RNA-seq and Western blot assays were used to investigate the molecular mechanisms.</p></div><div><h3>Results</h3><p>B7-H3 was highly expressed in CRC tissues and positively associated with poor prognosis of CRC patients by immunohistochemistry. Migration and invasion assays showed that B7-H3 knockdown significantly inhibited the migration and invasion of CRC cells. B7-H3 overexpression had the opposite effect. Moreover, we determined that B7-H3 could regulate actin cytoskeleton and the RhoA/ROCK1/LIMK1 pathway by F-actin immunofluorescence staining and Western blot. Importantly, the BDP5290, an inhibitor of the RhoA/ROCK1/(LIM domain kinase 1) LIMK1 axis, reversed the effects of B7-H3 overexpression on actin filament accumulating, migration, and invasion of CRC cells.</p></div><div><h3>Conclusions</h3><p>Our study concluded that B7-H3 facilitated CRC cell actin filament accumulating, migration, and invasion through the RhoA/ROCK1/LIMK1 axis.</p></div>","PeriodicalId":23201,"journal":{"name":"Tissue & cell","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142021324","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":"Ultrastructural comparison of the larval midguts between Trypoxylus dichotomus (Linnaeus, 1771) and Anomala corpulenta (Motschulsky, 1854) (Coleoptera: Scarabaeidae)","authors":"Mei-Jing Wang ,&nbsp;Xiao-Yu Sun ,&nbsp;Lu Jiang","doi":"10.1016/j.tice.2024.102521","DOIUrl":"10.1016/j.tice.2024.102521","url":null,"abstract":"<div><p>Larvae are the most important feeding and developmental stage in the life cycle of insects. Correspondingly, the larval midguts, as the primary digestive organs, undergo diverse specialization among insect lineages. Larvae of Scarabaeoidae, commomly known as white grubs, exhibit diversity on feeding habits at the familial or subfamilial level. However, the ultrastructure of larval midguts is not yet satisfactorily understood. In this study, the larval midguts of <em>Trypoxylus dichotomus</em> and <em>Anomala corpulenta</em> were compared using light and transmission electron microscopy for the first time, to uncover the ultrastructural differences between the midguts of saprophagous and phytophagous white grubs. The larval midguts of both species are tubular with three circles of the gastric caeca, and share morphological similarities in midgut epithelial cells, layers of basal lamina, and the digestive and regenerative cells. However, the midguts of the two species differ significantly in the shape of the gastric caeca and exhibit slightly differences in muscle structure. The morphology of larval midgut is related to the feeding habits.</p></div>","PeriodicalId":23201,"journal":{"name":"Tissue & cell","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141917495","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}