International Journal of Experimental Pathology最新文献

{"title":"Non-Interventional Treatment of Post-Dural-Puncture Headache; High-Flow Oxygen and Pro-Serotonin Agents a Safe and Effective Alternative","authors":"A. Tran, C. Roldan","doi":"10.33696/pathology.3.038","DOIUrl":"https://doi.org/10.33696/pathology.3.038","url":null,"abstract":"Lumbar punctures are commonly performed for diagnostic and/or therapeutic purposes by threading a needle through the outermost layer of the meninges, the dura mater, and into the intrathecal space within the lumbar region of the spine [1]. The intrathecal space contains cerebrospinal fluid (CSF), a clear and colorless fluid, which surrounds the brain and spinal cord and can provide information regarding intracranial pressures, presence of diseases involving the central nervous system (CNS) or surrounding meninges [2-4]. A common complication of dural puncture is a postdural puncture headache (PDPH) which is defined by The International Headache Society as a “headache that develops within 5 days of dural puncture and resolves within 1 week spontaneously or within 48 hours after effective treatment of the spinal fluid leak” [5]. Symptoms of PDPH classically include a frontal and/or occipital headache that improves in the supine position, worsened by sitting or standing, and may be associated with nausea, nick stiffness, vertigo, vision changes, dizziness, or auditory disturbances [6]. PDPH has the propensity to cause significant morbidity; among affected patients, 39% report a duration of at least one week of significant impairment of daily activities while severe PDPH may require hospital admission [7]. The gold standard treatment for PDPH is to administer an epidural blood patch (EBP), autologous blood collected in the periphery vessels and delivered in the area of suspected CSF leak within the spinal canal to “mechanically plug the leak” [8]. However, in order to perform this intervention safely, training and specific equipment are necessary but unfortunately not a common part of the armamentarium of most clinical settings. Among cancer patients, access to the intrathecal space for diagnostic or therapeutic purposes may be part of the standard of care and occurrences of headaches associated with dural puncture in these scenarios are not totally unavoidable. Furthermore, many patients with cancer often have clear contraindications to accessing the epidural space to perform a therapeutic blood patch [9]. Under these circumstances, noninvasive alternatives should be considered (Table 1).","PeriodicalId":14157,"journal":{"name":"International Journal of Experimental Pathology","volume":"32 8","pages":""},"PeriodicalIF":3.0,"publicationDate":"2022-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72411458","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":"Long-term intake of aspartame-induced cardiovascular toxicity is reflected in altered histochemical parameters, evokes oxidative stress, and trigger P53-dependent apoptosis in a mouse model","authors":"Hojat Anbara,&nbsp;Mehdi Kian,&nbsp;Gholam-Hossein Darya,&nbsp;Mohammad Taghi Sheibani","doi":"10.1111/iep.12458","DOIUrl":"10.1111/iep.12458","url":null,"abstract":"<p>Aspartame (ASP) is probably the best known artificial sugar substitute that is used widely in food. Many experimental studies have reported the toxicity of long-term administration of ASP in various organ tissues. However, there is little evidence available about the nature and mechanisms of the adverse effects of long-term consumption of ASP on the cardiovascular system. This study was conducted to evaluate the possible effects of ASP on heart tissue. For this study 36 mature male mice were divided into one control group and three groups which received respectively 40 mg/kg, 80 mg/kg and 160 mg/kg ASP orally, for 90 days. ASP at the doses of 80 and 160 mg/kg increased the serum content of malondialdehyde (MDA), but decreased serum nitric oxide (NO), creatine kinase (CK) and CK-MB, as well as blood superoxide dismutase (SOD) levels. Serum level of total anti-oxidant capacity (TAC) in blood was also reduced in serum at the dose of 80 mg/kg. Histochemical staining, including Periodic acid-Schiff, Masson's trichrome and Verhoeff-van Gieson staining, indicated that ASP at doses of 80 and 160 mg/kg reduced glycogen deposition and decreased the number of collagen and elastic fibres in the cardiac tissue. The cardiac expression of pro-apoptotic genes, including P53, Bax, Bcl-2 and Caspase-3, was modulated at the dose of 160 mg/kg. Moreover, transcription of Caspase-3 was up-regulated at the dose of 80 mg/kg. In conclusion, long-term consumption of ASP any higher than the acceptable daily intake (40 mg/kg) appears to act by promoting oxidative stress, has the potential to alter both histopathological and biochemical parameters, and induces P53-dependent apoptosis in cardiac tissue.</p>","PeriodicalId":14157,"journal":{"name":"International Journal of Experimental Pathology","volume":"103 6","pages":"252-262"},"PeriodicalIF":3.0,"publicationDate":"2022-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33518880","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":"Skin fibrosis associated with keloid, scleroderma and Jorge Lobo's disease (lacaziosis): An immuno-histochemical study","authors":"Wagner Luiz Tafuri,&nbsp;Thaise Yumie Tomokane,&nbsp;Ana Maria Gonçalves Silva,&nbsp;Luciane Kanashiro-Galo,&nbsp;David Miichael Mosser,&nbsp;Juarez Antonio Simões Quaresma,&nbsp;Carla Pagliari,&nbsp;Mirian N. Sotto","doi":"10.1111/iep.12456","DOIUrl":"10.1111/iep.12456","url":null,"abstract":"<p>Fibrosis is a common pathophysiological response of many tissues and organs subjected to chronic injury. Despite the diverse aetiology of keloid, lacaziosis and localized scleroderma, the process of fibrosis is present in the pathogenesis of all of these three entities beyond other individual clinical and histological distinct characteristics. Fibrosis was studied in 20 samples each of these three chronic cutaneous inflammatory diseases. An immunohistochemical study was carried out to explore the presence of α-smooth muscle actin (α-SMA) and vimentin cytoskeleton antigens, CD31, CD34, Ki67, p16; CD105, CD163, CD206 and FOXP3 antigens; and the central fibrotic cytokine TGF-β. Higher expression of vimentin in comparison to α-SMA in all three lesion types was found. CD31- and CD34-positive blood vessel endothelial cells were observed throughout the reticular dermis. Ki67 expression was low and almost absent in scleroderma. p16-positive levels were higher than ki67 and observed in reticular dermis of keloidal collagen in keloids, in collagen bundles in scleroderma and in the external layers of the granulomas in lacaziosis. The presence of α-actin positive cells and rarely CD34 positive cells, observed primarily in keloids, may be related to higher p16 antigen expression, a measure of cell senescence. Low FOXP3 expression was observed in all lesion types. CD105-positive cells were mainly found in perivascular tissue in close contact with the adventitia in keloids and scleroderma, while, in lacaziosis, these cells were chiefly observed in conjunction with collagen deposition in the external granuloma layer. We did not find high involvement of CD163 or CD206-positive cells in the fibrotic process. TGF-β was notable only in keloid and lacaziosis lesions. In conclusion, we have suggested vimentin to be the main myofibroblast general marker of the fibrotic process in all three studied diseases, while endothelial-to-mesenchymal transition (EndoMT) and mesenchymal stem cells (MSCs) and M2 macrophages may not play an important role.</p>","PeriodicalId":14157,"journal":{"name":"International Journal of Experimental Pathology","volume":"103 6","pages":"234-244"},"PeriodicalIF":3.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40389107","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":"Circular RNAs hsa_circ_0001438 and hsa_circ_0000417 are downregulated and upregulated, respectively, in hepatocellular carcinoma","authors":"Sachiko Imanishi,&nbsp;Shoko Nagata,&nbsp;Toshitsugu Fujita,&nbsp;Hodaka Fujii","doi":"10.1111/iep.12457","DOIUrl":"10.1111/iep.12457","url":null,"abstract":"<p>Hepatocellular carcinoma (HCC) is the most predominant type of liver cancer and is frequently fatal. Alpha-fetoprotein, alpha-fetoprotein-L3, and protein induced by vitamin K absence or antagonist-II are used as biomarkers to diagnose HCC. However, these biomarkers are not highly specific, especially for early-stage HCC diagnosis; therefore, more specific biomarkers are needed. Recently, circular RNA (circRNA) biomarkers have been used to diagnose several intractable diseases. In this study, we sought to identify circRNA biomarkers for the specific diagnosis of HCC. To this end, we compared the expression levels of circRNAs in primary HCC and normal tissues using publicly available RNA-seq data. Our analysis revealed that the expression levels of eight circRNAs were altered in primary HCC tissues compared with normal tissues. To confirm our findings, we examined the expression levels of selected circRNAs in HCC cell lines and normal hepatocytes. The expression level of hsa_circ_0001438, a circRNA that was downregulated in primary HCC, was lower in poorly and well-differentiated HCC cell lines than in normal hepatocytes. By contrast, the expression level of hsa_circ_0000417, which was increased in primary HCC, was strongly upregulated in a well-differentiated HCC cell line compared with normal hepatocytes. Thus, hsa_circ_0001438 and hsa_circ_0000417 might be potential biomarkers for the specific diagnosis of HCC. The experimental strategy described here, using publicly available RNA-seq data, is a useful and cost-effective method of identifying circRNA biomarkers.</p>","PeriodicalId":14157,"journal":{"name":"International Journal of Experimental Pathology","volume":"103 6","pages":"245-251"},"PeriodicalIF":3.0,"publicationDate":"2022-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33493509","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":"Adenosquamous Carcinoma of Ascending Colon: Where an Unseen is Seen","authors":"Prachi, H. Aiyer","doi":"10.33696/pathology.3.031","DOIUrl":"https://doi.org/10.33696/pathology.3.031","url":null,"abstract":"The frequency of adenosquamous carcinoma of the colon is <0.1% [1-3]. The first case of colorectal adenosquamous carcinoma was reported by Herxheimer in 1907 and was described as a tumor with both adenocarcinoma and squamous cell carcinoma components. These tumors have a greater potential to metastasize as compared to conventional adenocarcinoma of the colon. Adenosquamous carcinoma, located in the ascending colon is rare and has a poor prognosis. Thus, early detection of adenosquamous carcinoma is important and treatment of choice is surgical resection followed by adjuvant chemotherapy. An adenosquamous carcinoma in the lower gastrointestinal tract is a rare malignancy with a frequency of 0.020.06% [4].","PeriodicalId":14157,"journal":{"name":"International Journal of Experimental Pathology","volume":"104 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2022-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80682796","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":"The Proliferative Changes of Renal Afferent Arteriolar Walls and Renin-Angiotensin-Aldosterone System Inhibitors","authors":"","doi":"10.33696/pathology.3.035","DOIUrl":"https://doi.org/10.33696/pathology.3.035","url":null,"abstract":"","PeriodicalId":14157,"journal":{"name":"International Journal of Experimental Pathology","volume":"210 4","pages":""},"PeriodicalIF":3.0,"publicationDate":"2022-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72416654","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":"Can Artificial Intelligence Help?","authors":"","doi":"10.33696/pathology.3.033","DOIUrl":"https://doi.org/10.33696/pathology.3.033","url":null,"abstract":"","PeriodicalId":14157,"journal":{"name":"International Journal of Experimental Pathology","volume":"5 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2022-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75671217","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":"Newborns’ Hearing Health Associated with Infectious Diseases in Primary Healthcare Infectious Diseases and Neonatal Hearing Screening","authors":"","doi":"10.33696/pathology.3.034","DOIUrl":"https://doi.org/10.33696/pathology.3.034","url":null,"abstract":"","PeriodicalId":14157,"journal":{"name":"International Journal of Experimental Pathology","volume":"22 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2022-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72684147","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":"Cancer Stem Cells, Together with Mesenchymal Stem Cells and Other Cooperative Cells, Govern the Initiation and Development of Cancer","authors":"","doi":"10.33696/pathology.3.032","DOIUrl":"https://doi.org/10.33696/pathology.3.032","url":null,"abstract":"","PeriodicalId":14157,"journal":{"name":"International Journal of Experimental Pathology","volume":"194 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2022-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74478874","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":"Morphophysiological alterations in fruit-eating bats after oral exposure to deltamethrin","authors":"Jerusa Maria Oliveira,&nbsp;Suellen Silva Condessa,&nbsp;Ana Luiza Fonseca Destro,&nbsp;Graziela Domingues Almeida Lima,&nbsp;Marli do Carmo Cupertino,&nbsp;Silvia Almeida Cardoso,&nbsp;Mariella Bontempo Freitas,&nbsp;Leandro Licursi de Oliveira","doi":"10.1111/iep.12455","DOIUrl":"10.1111/iep.12455","url":null,"abstract":"<p>Deltamethrin (DTM) is a synthetic pyrethroid widely used in the cultivation and management of several crops due to its insecticidal action. Application to crops of pyrethroids such as DTM can result in the exposure of water and fruit consumed by fruit bats having a high pyrethroid content which may be harmful. Therefore the objective of this study was to evaluate the effects of short-term oral exposure of the fruit-eating bats (<i>Artibeus lituratus</i>) to two concentrations of DTM (0.02 and 0.04 mg/kg of papaya) on histopathology of the intestine, liver and kidney. The intestine of the animals exposed to both concentrations showed inflammatory infiltrate, degeneration, necrosis and goblet cell hyperplasia as the most frequent pathologies. Besides, the acid mucins showed an increase in the frequency of non-viable cells. The liver showed hepatocyte vacuolizatio and nuclear enlargement, as well as inflammatory infiltrate and steatosis. The kidneys of the exposed animals showed and inflammatory infiltrate, benign nephrosclerosis, vacuolization and necrosis. Also, DTM reduced nitric oxide synthesis, decreased glomerular diameter and increased glycogen percentage in the proximal tubules. Our results suggest that acute exposure to DTM at low concentrations has the potential to induce pronounced histopathological changes in vital organs, such as intestine, liver and kidney of fruit-eating bats.</p>","PeriodicalId":14157,"journal":{"name":"International Journal of Experimental Pathology","volume":"103 5","pages":"219-230"},"PeriodicalIF":3.0,"publicationDate":"2022-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40345756","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}