Annals of clinical and laboratory science最新文献

{"title":"Expression of Glutathione Peroxidase4 in Patients with Esophageal Squamous Carcinoma and Its Impact on the Radiosensitivity of Esophageal Squamous Carcinoma.","authors":"Chen Chen, Wendong Gu, Yingjie Shao, Panpan Zheng, Jingting Jiang","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Objective: </strong>Glutathione peroxidase-4 (GPX4) is a member of Ferroptosis and lipid circulation. This study aims to investigate the expression of GPX4 in esophageal squamous cell carcinoma and its impact on radiosensitivity.</p><p><strong>Method: </strong>Immunohistochemistry staining was used to detect GPX4 expression in 180 samples of ESCC tissues and adjacent tissues. We analyzed the relationship between GPX4 expression and ESCC clinical parameters. In vitro experiments were conducted using apoptosis assays and colony formation assays to investigate the effect of GPX4 on the radiosensitivity of ESCC cells. <i>In vivo</i> experiments were carried out using a nude mouse xenograft model to evaluate the impact of GPX4 on the radiosensitivity of ESCC.</p><p><strong>Results: </strong>GPX4 expression was lower in adjacent tissues than tumor tissues. The expression of GPX4 was significantly associated with the pathological grade of ESCC. The overall survival time (OS) of ESCC patients with low GPX4 expression was significantly longer than that of patients with high GPX4 expression. GPX4 could be used as independent prognostic factors in patients with ESCC. <i>In vivo</i> experiments, silencing of GPX4 or using GPX4 inhibitors significantly inhibits the viability and colony formation of ESCC cells after radiation exposure while increasing intracellular reactive oxygen species (ROS) levels, and significantly suppresses the tumorigenic ability of ESCC cells in subcutaneous xenografts after radiation exposure.</p><p><strong>Conclusion: </strong>GPX4 is highly expressed in ESCC, which has the potential value for prognostic assessment of ESCC. Silencing or inhibiting GPX4 can enhance the radiosensitivity of ESCC.</p>","PeriodicalId":8228,"journal":{"name":"Annals of clinical and laboratory science","volume":"54 2","pages":"160-169"},"PeriodicalIF":0.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141158066","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":"Overuse Ordering Serum Vitamin B12: A Call for Appropriate Ordering Guidelines Based on a Single Institutional Experience.","authors":"Sultan Alasmari, Mohammed Makkawi, Husain Y Alkhaldy","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Objective: </strong>Vitamin B12 is an essential nutrient for numerous functions in the human body. As such, many clinical scenarios justify assaying serum B12; however, there are no evidence-based guidelines available for determining when to order B12 tests. Here we investigate B12 assay ordering patterns to identify methods of enhancing efficiency and minimizing inappropriate requests.</p><p><strong>Methods: </strong>All serum B12 requests within the year spanning July 2018 to June 2019 were reviewed using the hospital's health information system. These amounted to 3,400 requests, of which data from the first 1,000 were evaluated. Patient demographics, hematological data, serum folate, and ferritin were extracted from the electronic requests. Physician identity and request reason were retrieved where available.</p><p><strong>Results: </strong>Of the 877 B12 requests for which patient age was available, the majority (80.3%) were for young and middle-aged patients. Interestingly, serum B12 was low in only a quarter of the 1,000 reviewed requests; the remaining three quarters had normal levels. Folate, which can be ordered with vitamin B12, was tested in 82 cases, of which only two (2.4%) had folate deficiency.</p><p><strong>Conclusion: </strong>This study highlights a high occurrence of improper ordering of vitamin B12 assays, indicating a need for revised guidelines to promote optimal test ordering.</p>","PeriodicalId":8228,"journal":{"name":"Annals of clinical and laboratory science","volume":"54 2","pages":"211-216"},"PeriodicalIF":0.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141156869","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":"Information About The Association of Clinical Scientists.","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":8228,"journal":{"name":"Annals of clinical and laboratory science","volume":"54 2","pages":"286"},"PeriodicalIF":0.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141158091","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 Utility of Thromboelastography in Monitoring Von Willebrand Disease: A Case Report.","authors":"Zubaidah Al-Jumaili, Nourhan Ibrahim, Ahmed A Ahmed, Brain Chang, Amer Wahed, Brenda Mai","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Von Willebrand disease (VWD) is the most common inherited bleeding disorder. It is primarily attributed to malfunctioning or deficient Von Willebrand factor (VWF). Thromboelastography (TEG) has emerged as a valuable tool for assessing coagulation dynamics and guiding transfusion therapy in bleeding patients. Given this, we present a case study of a 23-year-old pregnant female with a past medical history of type 2B VWD, wherein TEG was employed to optimize disease screening and therapy monitoring while minimizing costs and preventing complications associated with low platelet counts. This case underscores the potential utility of TEG in enhancing the care of VWD patients, particularly in unique critical settings such as pregnancy.</p>","PeriodicalId":8228,"journal":{"name":"Annals of clinical and laboratory science","volume":"54 2","pages":"246-250"},"PeriodicalIF":1.1,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141156878","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":"Annals of Clinical and Laboratory Science: Information for Authors.","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":8228,"journal":{"name":"Annals of clinical and laboratory science","volume":"54 2","pages":"284-285"},"PeriodicalIF":0.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141157966","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":"Anti-Cancer Peptide PNC-27 Kills Cancer Cells by Unique Interactions with Plasma Membrane-Bound hdm-2 and with Mitochondrial Membranes Causing Mitochondrial Disruption.","authors":"Patryk Krzesaj, Victor Adler, Richard D Feinman, Anna Miller, Miriam Silberstein, Ehsan Yazdi, Matthew R Pincus","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Objective: </strong>We have previously shown that the anti-cancer peptide PNC-27 kills cancer cells by co-localizing with membrane-expressed HDM-2, resulting in transmembrane pore formation causing extrusion of intracellular contents. We have also observed cancer cell mitochondrial disruption in PNC-27-treated cancer cells. Our objectives are to determine: 1. if PNC-27 binds to the p53 binding site of HDM-2 (residues 1-109) in the cancer cell membrane and 2. if this peptide causes selective disruption of cancer cell mitochondria.</p><p><strong>Methods: </strong>For aim 1, we incubated MIA-PaCa-2 human pancreatic carcinoma cells with PNC-27 in the presence of a monoclonal antibody against the amino terminal p53 binding site of HDM-2 to determine if it, but not negative control immune serum, blocks PNC-27-induced tumor cell necrosis. For the second aim, we incubated these cells with PNC-27 in the presence of two specific dyes that highlight normal organelle function: mitotracker for mitochondria and lysotracker for lysosomes. We also performed immuno-electron microscopy (IEM) with gold-labeled anti-PNC-27 antibody on the mitochondria of these cells treated with PNC-27.</p><p><strong>Results: </strong>Monoclonal antibody to the p53 binding site of HDM-2 blocks PNC-27-induced cancer cell necrosis, whereas negative control immune serum does not. The mitochondria of PNC-27-treated cancer cells fail to retain mitotracker dye while their lysosomes retain lysotracker dye. IEM of the mitochondria cancer cells reveals gold particles present on the mitochondrial membranes.</p><p><strong>Conclusions: </strong>PNC-27 binds to the p53 binding site of HDM-2 (residues 1-109) inducing transmembrane pore formation and cancer cell necrosis. Furthermore, this peptide enters cancer cells and binds to the membranes of mitochondria, resulting in their disruption.</p>","PeriodicalId":8228,"journal":{"name":"Annals of clinical and laboratory science","volume":"54 2","pages":"137-148"},"PeriodicalIF":0.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141157979","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":"Intraintestinal Heterogeneity of Drug Target Expression in Inflammatory Bowel Disease.","authors":"Katelyn Swanson, Mamoun Younes","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Objective: </strong>There has been no significant improvement in remission rate in inflammatory bowel disease (IBD) despite several new drugs being introduced in the past two decades. Post-treatment biopsies sometimes show histologic healing in some areas of the intestine while other areas within the same intestine continue to show active inflammation. The aim of this short descriptive study was to determine whether heterogeneous treatment response in IBD may be caused by heterogeneous expression of treatment targets within the same intestine.</p><p><strong>Methods: </strong>Six cases of Crohn's disease and five cases of ulcerative colitis in which moderate to severe active inflammation was present in at least two biopsies from the same intestine obtained during the same endoscopy procedure were entered in the study. Sections were stained for TNFα and phospho-JAK1 (p-JAK1) using immunohistochemistry. Expression of TNFα and p-JAK1 was recorded as high when the staining intensity was moderate or high, or low when there was no or week staining. The number of eosinophils per high power field was counted in the area of peak density.</p><p><strong>Results: </strong>Different sites within the same intestine from IBD patients with moderate to severe active inflammation may express different levels of TNFα and p-JAK1. For example, in one patient with Crohn's disease with histologically moderate to severe activity in biopsies from the ileum (site 1) and cecum (site 2), there was high expression of p-JAK1 and low TNFα in the ileum biopsy with the exact opposite in the cecum biopsy (low p-JAK1 and high TNFα expression). In this example neither small molecule drug targeting JAK1 nor anti-TNFα biologic given as single agent therapy would be expected to induce histologic remission in both actively inflamed sites in this patient.</p><p><strong>Conclusions: </strong>The heterogeneous expression of treatment targets within the same intestine may explain why some patients with IBD may not have complete remission on single drug. Studies are needed to determine whether assay for target expression in mucosal biopsies from IBD patients can help to optimize treatment selection.</p>","PeriodicalId":8228,"journal":{"name":"Annals of clinical and laboratory science","volume":"54 2","pages":"156-159"},"PeriodicalIF":0.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141158094","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":"Abstracts of Presentations at the Association of Clinical Scientists 145^th Meeting Jacksonville, FL April 1-4, 2024.","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":8228,"journal":{"name":"Annals of clinical and laboratory science","volume":"54 2","pages":"271-283"},"PeriodicalIF":0.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141157962","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":"Differences in ¹HNMR Based Metabolomic Patterns of Malignant and Benign Pleural Effusions.","authors":"Tongshun Xie, Qing Wang, Jie Gao, Kanheng He, Jiangqing Yu","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Objective: </strong>Malignant pleural effusion (MPE) is a common complication of lung cancer with poor prognosis. Benign pleural effusion (BPE), such as tuberculous and pneumonic pleural effusion, usually has a good prognosis. Differential diagnosis between MPE and BPE remains a clinical challenge.</p><p><strong>Methods: </strong>52 MPE, 93 BPE, and their corresponding serum samples were analyzed by hydrogen nuclear magnetic resonance (¹HNMR) based metabolomics.</p><p><strong>Results: </strong>The ¹HNMR study showed that some amino acids and betaine in MPE are significantly altered in pleural effusion and serum compared to BPE patients. Levels of serum glucose and glutamine have strong positive correlation with those in pleural effusion (r>0.6) for MPE patients. The area under the receiver operating characteristic curve (AUROC) values of metabolites in pleural effusion or serum were less than 0.805 in differentiating MPE from BPE. Improved an AUROC value of 0.901 was observed using pleural effusion-serum ratios of glutamic acid in differentiating MPE from BPE, which was further validated by 15 double-blind samples.</p><p><strong>Conclusions: </strong>Compared with BPE patients, amino acids and betaine in MPE are significantly altered in pleural effusion and serum. Pleural effusion-serum ratio of glutamic acid may contribute to the rapid diagnosis of MPE from BPE by ¹HNMR analysis.</p>","PeriodicalId":8228,"journal":{"name":"Annals of clinical and laboratory science","volume":"54 2","pages":"201-210"},"PeriodicalIF":0.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141158008","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":"ERRATUM.","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":8228,"journal":{"name":"Annals of clinical and laboratory science","volume":"54 2","pages":"270"},"PeriodicalIF":0.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141158059","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}