Clinical and Experimental Pharmacology and Physiology最新文献

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Correction to “GSK3β inhibitor TDZD8 ameliorates brain damage through both ROS scavenging and inhibition of apoptosis in hyperglycemic subarachnoid haemorrhage rats” 对 "GSK3β抑制剂TDZD8通过清除高血糖蛛网膜下腔出血大鼠体内的ROS和抑制细胞凋亡改善脑损伤 "的更正
IF 2.9 4区 医学
Clinical and Experimental Pharmacology and Physiology Pub Date : 2024-04-18 DOI: 10.1111/1440-1681.13853
{"title":"Correction to “GSK3β inhibitor TDZD8 ameliorates brain damage through both ROS scavenging and inhibition of apoptosis in hyperglycemic subarachnoid haemorrhage rats”","authors":"","doi":"10.1111/1440-1681.13853","DOIUrl":"https://doi.org/10.1111/1440-1681.13853","url":null,"abstract":"<p>Citation to article being corrected.</p><p>None.</p><p>Error description of text.</p><p>In Figure 5A, Section of Results, the group <b>SAH + STZ</b> was incorrectly combined as an error, caused by our unconscious saving mistake when taking too many florescence pictures.</p><p>We apologize for this error.</p><p>Error description of figure.</p><p>We apologize for this error.</p>","PeriodicalId":50684,"journal":{"name":"Clinical and Experimental Pharmacology and Physiology","volume":"51 6","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1440-1681.13853","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140619747","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}
引用次数: 0
Loganin exerts neuroprotective effect by inhibiting neuronal pyroptosis in rat with cerebral haemorrhage 罗加宁通过抑制脑出血大鼠神经元的脓毒症发挥神经保护作用
IF 2.9 4区 医学
Clinical and Experimental Pharmacology and Physiology Pub Date : 2024-04-18 DOI: 10.1111/1440-1681.13858
Yu Wang, Min Zhao, Jing Li, Yue Liu
{"title":"Loganin exerts neuroprotective effect by inhibiting neuronal pyroptosis in rat with cerebral haemorrhage","authors":"Yu Wang,&nbsp;Min Zhao,&nbsp;Jing Li,&nbsp;Yue Liu","doi":"10.1111/1440-1681.13858","DOIUrl":"https://doi.org/10.1111/1440-1681.13858","url":null,"abstract":"<p>Intracerebral haemorrhage (ICH) presents significant challenges in clinical management because of the high morbidity and mortality, necessitating novel therapeutic approaches. This study aimed to assess the neuroprotective effects of loganin in a rat ICH model. Sprague–Dawley rats were used, subjected to a collagenase-induced ICH model, followed by loganin treatment at doses of 2.5, 5 and 10 mg/kg. Neurological functions were evaluated using the modified neurological severity score (mNSS) and a rotarod test. Results indicated a significant improvement in neurological functions in loganin-treated groups, evident from the mNSS and rotarod tests, suggesting dose-dependent neuroprotection. Loganin also effectively reduced the blood–brain barrier (BBB) permeability and cerebral oedema. Additionally, it mitigated cellular pyroptosis, as shown by terminal deoxynucleotidyl transferase dUTP nick-end labelling staining and western blot analysis, which indicated reduced levels of pyroptosis markers in treated rats. Furthermore, loganin's regulatory effects on the adenosine A2A receptor and myosin light chain kinase pathways were observed, potentially underpinning its protective mechanism against ICH. The study concludes that loganin exhibits significant neuroprotective properties in a rat ICH model, highlighting its potential as a novel therapeutic strategy. Despite promising results, the study needs further research to determine loganin's therapeutic potential in human ICH patients. This research paves the way for further exploration into loganin's clinical applications, potentially revolutionizing treatment strategies for patients suffering from intracerebral haemorrhage.</p>","PeriodicalId":50684,"journal":{"name":"Clinical and Experimental Pharmacology and Physiology","volume":"51 6","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140619746","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}
引用次数: 0
Salvianic acid A sodium facilitates cardiac microvascular endothelial cell proliferation by enhancing the hypoxia-inducible factor-1 alpha/vascular endothelial growth factor signalling pathway post-myocardial infarction 丹酚酸 A 钠通过增强心肌梗死后缺氧诱导因子-1 α/血管内皮生长因子信号通路,促进心脏微血管内皮细胞增殖
IF 2.9 4区 医学
Clinical and Experimental Pharmacology and Physiology Pub Date : 2024-04-18 DOI: 10.1111/1440-1681.13855
Jichun Liu, Fei Wu, Zhenhan Li, Shengwei Zheng, Yanqiang Huang, Hao Chen
{"title":"Salvianic acid A sodium facilitates cardiac microvascular endothelial cell proliferation by enhancing the hypoxia-inducible factor-1 alpha/vascular endothelial growth factor signalling pathway post-myocardial infarction","authors":"Jichun Liu,&nbsp;Fei Wu,&nbsp;Zhenhan Li,&nbsp;Shengwei Zheng,&nbsp;Yanqiang Huang,&nbsp;Hao Chen","doi":"10.1111/1440-1681.13855","DOIUrl":"https://doi.org/10.1111/1440-1681.13855","url":null,"abstract":"<p>Cardiac microvascular endothelial cells (CMECs) are important cells surrounding the cardiomyocytes in the heart that maintain microenvironment homeostasis. Salvianic acid A sodium (SAAS) has been reported to prevent myocardial infarction (MI) injury. However, the role of SAAS on CMEC proliferation remains unclear. CEMCs exposed to oxygen glucose deprivation (OGD) were used to explore the angiogenic abilities of SAAS. In vivo, C57BL/6 mice were divided into three groups: sham, MI and SAAS + MI groups. Compared to OGD group, SAAS led to a reduction in the apoptotic rate and an increase of the proliferation in vitro. Additionally, SAAS increased the protein levels of Bcl2, HIF-1α and vascular endothelial growth factor (VEGF) with the reduction of Bax. In terms of the specific mechanisms, SAAS might inhibit HIF-1α ubiquitination and enhance the HIF-1α/VEGF signalling pathway to increase CMEC proliferation. Furthermore, SAAS increased the density of vessels, inhibited myocardial fibrosis and improved cardiac dysfunction in vivo. The present study has revealed that SAAS could potentially be used as an active substance to facilitate CMEC proliferation post-MI.</p>","PeriodicalId":50684,"journal":{"name":"Clinical and Experimental Pharmacology and Physiology","volume":"51 6","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140619748","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}
引用次数: 0
Metformin ameliorates endometrial thickness in a rat model of thin endometrium 二甲双胍可改善大鼠薄子宫内膜模型中的子宫内膜厚度
IF 2.9 4区 医学
Clinical and Experimental Pharmacology and Physiology Pub Date : 2024-04-15 DOI: 10.1111/1440-1681.13862
M. Imran, Aditya Khandvilkar, Siddhanath Metkari, Geetanjali Sachdeva, Uddhav Chaudhari
{"title":"Metformin ameliorates endometrial thickness in a rat model of thin endometrium","authors":"M. Imran,&nbsp;Aditya Khandvilkar,&nbsp;Siddhanath Metkari,&nbsp;Geetanjali Sachdeva,&nbsp;Uddhav Chaudhari","doi":"10.1111/1440-1681.13862","DOIUrl":"https://doi.org/10.1111/1440-1681.13862","url":null,"abstract":"<p>Metformin, a well-established anti-diabetic drug, is also used in managing various other metabolic disorders including polycystic ovarian syndrome (PCOS). There are evidences to show that metformin improves endometrial functions in PCOS women. However, fewer studies have explored the direct effects of metformin on endometrium. Previous in vitro studies have shown that therapeutic serum concentrations of metformin enhance endometrial epithelial cell proliferation. The present study was undertaken to investigate in vivo effects of metformin on endometrial proliferation in a rat model of thin endometrium. Toward this, a rat model of thin endometrium was developed. Metformin (0.1% or 1% w/v) was administrated orally for 15 days in rats with thin endometrium. Oral metformin administration for three consecutive estrous cycles (15 days) in the thin endometrium rat model led to an increase in endometrial thickness compared to sham endometrium. Histological analysis showed a significant increase in the number of endometrial glands (<i>P</i> &lt; 0.05), stromal cells (<i>P</i> &lt; 0.01) and blood vessels (<i>P</i> &lt; 0.01) in metformin-treated (n = 10 in each group) uterine horns compared to sham (saline-treated) uterine horns in rats. The expression of proliferating cell nuclear antigen and vascular epithelial growth factor was found to be upregulated on treatment with 1% metformin-treated group (n = 7). However, pregnancy outcomes in the rats treated with metformin remained unaltered despite the restoration of endometrial thickness. In conclusion, the study demonstrated that metformin ameliorates endometrial thickness in a rat model of thin endometrium by increasing endometrial proliferation and angiogenesis, without restoration of embryo implantation.</p>","PeriodicalId":50684,"journal":{"name":"Clinical and Experimental Pharmacology and Physiology","volume":"51 6","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140556154","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}
引用次数: 0
Colorectal cancer cells with stably expressed SIRT3 demonstrate proliferating retardation by Wnt/β-catenin cascade inactivation 稳定表达 SIRT3 的结直肠癌细胞因 Wnt/β-catenin 级联失活而增殖迟缓
IF 2.9 4区 医学
Clinical and Experimental Pharmacology and Physiology Pub Date : 2024-04-15 DOI: 10.1111/1440-1681.13856
Tianyu Li, Leqi Fan, Yijiang Jia, Chen Xu, Wei Guo, Yuji Wang, Ye Li
{"title":"Colorectal cancer cells with stably expressed SIRT3 demonstrate proliferating retardation by Wnt/β-catenin cascade inactivation","authors":"Tianyu Li,&nbsp;Leqi Fan,&nbsp;Yijiang Jia,&nbsp;Chen Xu,&nbsp;Wei Guo,&nbsp;Yuji Wang,&nbsp;Ye Li","doi":"10.1111/1440-1681.13856","DOIUrl":"https://doi.org/10.1111/1440-1681.13856","url":null,"abstract":"<p>Colorectal cancer (CRC) is a typical and lethal digestive system malignancy. In this study, we investigated the effect of sirtuin 3 (SIRT3) expression, a fidelity mitochondrial protein, on the proliferation of CRC cells and the mechanisms involved. Using the University of Alabama at Birmingham Cancer Data Analysis Portal database and the Clinical Proteomic Tumour Analysis Consortium database, we discovered that low expression of <i>SIRT3</i> in CRC was a negative factor for survival prognosis (<i>P &lt;</i> .05). Meanwhile, SIRT3 expression was correlated with distant metastasis and tumour, node, metastasis stage of CRC patients (<i>P &lt;</i> .05). Subsequently, we observed that CRC cells with stable <i>SIRT3</i> expression exhibited a significant decrease in proliferative capacities both in vitro and in vivo, compared to their counterparts (<i>P &lt;</i> .05). Further investigation using western blot, immunoprecipitation and TOPflash/FOPflash assay showed the mechanism of growth retardation of these cells was highly associated with the degradation of β-catenin in cytosol, and the localization of β-catenin/α-catenin complex in the nucleus. In conclusion, our findings suggest that the inhibition of CRC cell proliferation by SIRT3 is closely associated with the inactivation of the Wnt/β-catenin signalling pathway.</p>","PeriodicalId":50684,"journal":{"name":"Clinical and Experimental Pharmacology and Physiology","volume":"51 6","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140556306","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}
引用次数: 0
NPAS2, transcriptionally activated by ARRB1, promotes the malignant behaviours of lung adenocarcinoma cells and regulates the reprogramming of glucose metabolism 由 ARRB1 转录激活的 NPAS2 促进肺腺癌细胞的恶性行为,并调控葡萄糖代谢的重编程
IF 2.9 4区 医学
Clinical and Experimental Pharmacology and Physiology Pub Date : 2024-04-07 DOI: 10.1111/1440-1681.13860
Shenglan Wang, Chunhong Huang, Yanbin Zheng, Xinjie Wu, Yutong Zhong
{"title":"NPAS2, transcriptionally activated by ARRB1, promotes the malignant behaviours of lung adenocarcinoma cells and regulates the reprogramming of glucose metabolism","authors":"Shenglan Wang,&nbsp;Chunhong Huang,&nbsp;Yanbin Zheng,&nbsp;Xinjie Wu,&nbsp;Yutong Zhong","doi":"10.1111/1440-1681.13860","DOIUrl":"https://doi.org/10.1111/1440-1681.13860","url":null,"abstract":"<p>Lung adenocarcinoma (LUAD) is a serious threat to public health and is accompanied by increased morbidity and mortality worldwide. <i>Neuronal PAS domain protein2</i> (<i>NPAS2</i>) has been confirmed as an oncogene in LUAD; however, little is known about its molecular mechanism. Here, the expression level of NPAS2 was detected in LUAD cell lines and 16HBE cells. Gain- and loss-of-function experiments were performed. Cell Counting Kit-8, colony formation, flow cytometry, wound-healing and Transwell assays were conducted to assess cell proliferation, apoptosis, migration and invasion, respectively. Reprogramming of glucose metabolism was evaluated via oxygen consumption rate (OCR), complexes activities, lactic production and glucose consumption. The expression of critical proteins was examined by western blot. We demonstrated aberrant upregulation of NPAS2 and β-arrestin-1 (ARRB1) in LUAD cell lines. ARRB1 was found to be a critical transcription factor of NPAS2 with binding sites within the promoter region of NPAS2, thereby causing its transcriptional activation. Functional experiments revealed that NPAS2 depletion significantly inhibited the malignant behaviours of A549 cells by suppressing cell proliferation, migration, invasion and epithelial-mesenchymal transition and promoting cell apoptosis. Meanwhile, NPAS2 depletion increased OCR and activities of complexes (I, II, III and V), and reduced lactic acid production and glucose uptake in A549 cells, indicating that NPAS2 depletion inhibited aerobic glycolysis, accompanied by reduced expression of glycolytic enzymes. However, the changes caused by NPAS2 knockdown were partly restored by ARRB1 overexpression. In conclusion, our study suggests that ARRB1 could transcriptionally activate NPAS2, facilitating malignant activities and glycolysis, and ultimately promoting the progression of LUAD, proving a novel therapeutic strategy for the treatment of LUAD.</p>","PeriodicalId":50684,"journal":{"name":"Clinical and Experimental Pharmacology and Physiology","volume":"51 5","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140537728","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}
引用次数: 0
Overexpression of HSP27 accelerates stress-induced gastric ulcer healing via the CXCL12/CXCR4 axis 过表达 HSP27 可通过 CXCL12/CXCR4 轴加速应激诱导的胃溃疡愈合
IF 2.9 4区 医学
Clinical and Experimental Pharmacology and Physiology Pub Date : 2024-04-02 DOI: 10.1111/1440-1681.13857
Qiaoyan Lu, Hua Tang
{"title":"Overexpression of HSP27 accelerates stress-induced gastric ulcer healing via the CXCL12/CXCR4 axis","authors":"Qiaoyan Lu,&nbsp;Hua Tang","doi":"10.1111/1440-1681.13857","DOIUrl":"https://doi.org/10.1111/1440-1681.13857","url":null,"abstract":"<p>Chronic stress often triggers gastrointestinal complications, including gastric injury and ulcers. Understanding the role of heat shock protein 27 (HSP27) in stress-induced gastric ulcers could unveil novel therapeutic targets. Here, we established a stress-induced gastric ulcer rat model using water immersion restraint stress and administered adenovirus-packaged HSP27 overexpression vector. Gastric ulcer severity was scored, and mucosal changes were assessed. Gastric epithelial and endothelial cells were treated with lipopolysaccharide and transfected with HSP27 overexpression vectors to evaluate cell viability, migration and angiogenesis. Expression levels of HSP27, C-X-C motif chemokine ligand 12 (CXCL12) and C-X-C motif chemokine receptor 4 (CXCR4) were measured in tissues and cells. HSP27 expression was initially low during stress-induced gastric ulceration but increased during ulcer healing. HSP27 overexpression accelerated ulcer healing in rats, promoting gastric epithelial cell proliferation and migration and gastric endothelial cell angiogenesis through the CXCL12/CXCR4 axis. Inhibitor IT1t reversed the effects of HSP27 overexpression on cell proliferation, migration and angiogenesis. In summary, HSP27 overexpression facilitated ulcer healing, which was partially mediated by the CXCL12/CXCR4 axis.</p>","PeriodicalId":50684,"journal":{"name":"Clinical and Experimental Pharmacology and Physiology","volume":"51 5","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140342953","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}
引用次数: 0
Exploring the modulatory effects of sotagliflozin on dyslipidemia in mice: The role of glucagon, fibroblast growth factor 21 and glucagon-like peptide 1 探索索他利氟嗪对小鼠血脂异常的调节作用:胰高血糖素、成纤维细胞生长因子 21 和胰高血糖素样肽 1 的作用。
IF 2.9 4区 医学
Clinical and Experimental Pharmacology and Physiology Pub Date : 2024-03-25 DOI: 10.1111/1440-1681.13854
Nitin J. Deshmukh, M. S. Kalshetti, Mohan Patil, Pankaj Autade, Ganesh V. Sangle
{"title":"Exploring the modulatory effects of sotagliflozin on dyslipidemia in mice: The role of glucagon, fibroblast growth factor 21 and glucagon-like peptide 1","authors":"Nitin J. Deshmukh,&nbsp;M. S. Kalshetti,&nbsp;Mohan Patil,&nbsp;Pankaj Autade,&nbsp;Ganesh V. Sangle","doi":"10.1111/1440-1681.13854","DOIUrl":"10.1111/1440-1681.13854","url":null,"abstract":"<p>Sotagliflozin is the first dual SGLT1/2 inhibitor antidiabetic drug approved by the US Food and Drug Administration for the management of heart failure. SGLT1/2 inhibition is observed to potentiate the secretion of the incretin hormone, glucagon-like peptide-1 (GLP-1). The current preclinical research sought to investigate the effect of sotagliflozin on the secretion of fat-regulating peptides such as GLP-1, glucagon and fibroblast growth factor 21 (FGF21) and their prospective association with sotagliflozin's potential beneficial effects on dyslipidaemia. During an oral fat tolerance test in mice, sotagliflozin substantially increased GLP-1 and insulin concentrations. Although sotagliflozin alone did not ameliorate postprandial lipemia, its combination with linagliptin (DPP-IV inhibitor) significantly improved lipid tolerance comparable to orlistat (lipase inhibitor). In a triton-induced hypertriglyceridemia model, sotagliflozin, along with other medications (fenofibrate, exenatide and linagliptin) reduced fat excursion; however, co-administration with linagliptin provided no extra advantage. Furthermore, sotagliflozin stimulated glucagon secretion in the alpha TC1.6 cells and healthy mice, which resulted in an increased circulating FGF21 and β-hydroxybutyrate concentration. Finally, chronic treatment of sotagliflozin in high-fat diet (HFD)-fed obese mice resulted in reduced body weight gain, liver triglyceride, cholesterol, interleukin-6 (IL-6) and tumour necrosis factor alpha (TNF-α) levels compared with the placebo group. However, the addition of linagliptin did not provide any additional benefit. In conclusion, sotagliflozin was found to have an effect on GLP-1 and also stimulate the release of glucagon and FGF21, which are important for regulating fat metabolism. Therefore, sotagliflozin might represent a potential therapeutic approach for the treatment of diabetic dyslipidemia and steatohepatitis.</p>","PeriodicalId":50684,"journal":{"name":"Clinical and Experimental Pharmacology and Physiology","volume":"51 5","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140287089","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}
引用次数: 0
Differential responses of cerebral and renal oxygenation to altered perfusion conditions during experimental cardiopulmonary bypass in sheep 绵羊实验性心肺旁路过程中大脑和肾脏氧合对灌注条件改变的不同反应。
IF 2.9 4区 医学
Clinical and Experimental Pharmacology and Physiology Pub Date : 2024-03-07 DOI: 10.1111/1440-1681.13852
Roger G. Evans, Andrew D. Cochrane, Sally G. Hood, Bruno Marino, Naoya Iguchi, Rinaldo Bellomo, Peter R. McCall, Nobuki Okazaki, Alemayehu H. Jufar, Lachlan F. Miles, Taku Furukawa, Connie P. C. Ow, Jaishankar Raman, Clive N. May, Yugeesh R. Lankadeva
{"title":"Differential responses of cerebral and renal oxygenation to altered perfusion conditions during experimental cardiopulmonary bypass in sheep","authors":"Roger G. Evans,&nbsp;Andrew D. Cochrane,&nbsp;Sally G. Hood,&nbsp;Bruno Marino,&nbsp;Naoya Iguchi,&nbsp;Rinaldo Bellomo,&nbsp;Peter R. McCall,&nbsp;Nobuki Okazaki,&nbsp;Alemayehu H. Jufar,&nbsp;Lachlan F. Miles,&nbsp;Taku Furukawa,&nbsp;Connie P. C. Ow,&nbsp;Jaishankar Raman,&nbsp;Clive N. May,&nbsp;Yugeesh R. Lankadeva","doi":"10.1111/1440-1681.13852","DOIUrl":"10.1111/1440-1681.13852","url":null,"abstract":"<p>We tested whether the brain and kidney respond differently to cardiopulmonary bypass (CPB) and to changes in perfusion conditions during CPB. Therefore, in ovine CPB, we assessed regional cerebral oxygen saturation (rSO<sub>2</sub>) by near-infrared spectroscopy and renal cortical and medullary tissue oxygen tension (PO<sub>2</sub>), and, in some protocols, brain tissue PO<sub>2</sub>, by phosphorescence lifetime oximetry. During CPB, rSO<sub>2</sub> correlated with mixed venous SO<sub>2</sub> (r = 0.78) and brain tissue PO<sub>2</sub> (r = 0.49) when arterial PO<sub>2</sub> was varied. During the first 30 min of CPB, brain tissue PO<sub>2</sub>, rSO<sub>2</sub> and renal cortical tissue PO<sub>2</sub> did not fall, but renal medullary tissue PO<sub>2</sub> did. Nevertheless, compared with stable anaesthesia, during stable CPB, rSO<sub>2</sub> (66.8 decreasing to 61.3%) and both renal cortical (90.8 decreasing to 43.5 mm Hg) and medullary (44.3 decreasing to 19.2 mm Hg) tissue PO<sub>2</sub> were lower. Both rSO<sub>2</sub> and renal PO<sub>2</sub> increased when pump flow was increased from 60 to 100 mL kg<sup>−1</sup> min<sup>−1</sup> at a target arterial pressure of 70 mm Hg. They also both increased when pump flow and arterial pressure were increased simultaneously. Neither was significantly altered by partially pulsatile flow. The vasopressor, metaraminol, dose-dependently decreased rSO<sub>2</sub>, but increased renal cortical and medullary PO<sub>2</sub>. Increasing blood haemoglobin concentration increased rSO<sub>2</sub>, but not renal PO<sub>2</sub>. We conclude that both the brain and kidney are susceptible to hypoxia during CPB, which can be alleviated by increasing pump flow, even without increasing arterial pressure. However, increasing blood haemoglobin concentration increases brain, but not kidney oxygenation, whereas vasopressor support with metaraminol increases kidney, but not brain oxygenation.</p>","PeriodicalId":50684,"journal":{"name":"Clinical and Experimental Pharmacology and Physiology","volume":"51 4","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1440-1681.13852","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140058818","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}
引用次数: 0
Epidemiology and risk factors of bloodstream infections among adolescents and young adults with acute lymphoblastic leukaemia: An 11-year retrospective cohort study 急性淋巴细胞白血病青少年患者血液感染的流行病学和风险因素:一项为期 11 年的回顾性队列研究。
IF 2.9 4区 医学
Clinical and Experimental Pharmacology and Physiology Pub Date : 2024-03-07 DOI: 10.1111/1440-1681.13850
Longlong Xue, Yishu Tang, Liwen Wang, Cong Xu, Qian Cheng, Xin Li
{"title":"Epidemiology and risk factors of bloodstream infections among adolescents and young adults with acute lymphoblastic leukaemia: An 11-year retrospective cohort study","authors":"Longlong Xue,&nbsp;Yishu Tang,&nbsp;Liwen Wang,&nbsp;Cong Xu,&nbsp;Qian Cheng,&nbsp;Xin Li","doi":"10.1111/1440-1681.13850","DOIUrl":"10.1111/1440-1681.13850","url":null,"abstract":"<p>Adolescent and young adults (AYAs) belong to a unique category of patients diagnosed with acute lymphoblastic leukaemia (ALL). Bloodstream infection (BSI) is a leading cause of treatment-related mortality in ALL patients. However, the epidemiology and risk factors for mortality from BSIs in AYA patients remain unclear. In this study, we analysed these aspects in AYAs patients and compared similarities and differences with children (&lt;15 years old) and older adults (&gt;39 years old). We analysed the pathogenic epidemiology, antibiotic resistance and BSI risk factors of 73 children, 180 AYAs, and 110 older adults with ALL in three comprehensive hospitals from January 2010 to August 2021. The data on BSIs in AYAs were compared to that of the other two groups. In this study, the epidemiology of BSIs in AYAs was similar to that of older adult patients. Concerning clinical characteristics, most AYAs and older adults with BSIs were in a relapsed or uncontrolled state (34.5% vs. 35.4%, p = 0.861). In terms of pathogen distribution, Gram-negative bacteria (GNB) were the most common causative pathogens in AYAs and older adult groups. Extended-spectrum beta-lactamase (ESBL)-producing bacteria were more commonly found in AYAs than in children (32.8% vs. 16.4%, p = 0.09). Regarding risk factors, the length of hospitalization (&gt;14 days) and renal inadequacy (creatinine ≥ 177 μmol/L) were influencing factors for 30-day mortality in AYAs patients with BSIs. In our study, AYA patients with BSIs showed clinical characteristics and pathogen distributions similar to those of older adult patients but quite different from those of children.</p>","PeriodicalId":50684,"journal":{"name":"Clinical and Experimental Pharmacology and Physiology","volume":"51 4","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140058819","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}
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