International Journal of Hypertension最新文献

{"title":"Association between rs20456 and rs6930913 of Kinesin-Like Family 6 and Hypertension in a Chinese Cohort.","authors":"Yan-Li Chen,&nbsp;Li-Qiang Zheng,&nbsp;Tie-Jun Li,&nbsp;Zhao-Qing Sun,&nbsp;Ying Hao,&nbsp;Bao-Gang Wu,&nbsp;Ying-Xian Sun","doi":"10.1155/2021/1061800","DOIUrl":"https://doi.org/10.1155/2021/1061800","url":null,"abstract":"<p><p>This study aimed to investigate the relationship between kinesin-like family 6 (KIF6) polymorphisms and hypertension in a northeast Chinese cohort. In this study, two single nucleotide polymorphisms of KIF6 (rs20456 and rs6930913) and their haplotype were analyzed in 382 hypertension patients and 378 controls with SHEsis analysis platform, and the gene-environmental interactions were evaluated with logistic regression analysis. After adjusting for confounding factors, significantly lower risk of hypertension was observed in participants with genotype TC (0.416 (CI 0.299-0.578), <i>p</i> < 0.001) and CC (0.577 (0.389-0.857), <i>p</i>=0.007) of rs20456 compared with TT. For rs6930913, allele T (0.522 (0.386-0.704), <i>p</i> < 0.001), genotype TT (0.325 (0.205-0.515), <i>p</i> < 0.001), and genotype CT (0.513 (0.379-0.693), <i>p</i> < 0.001) were significantly associated with lower risk of hypertension than allele C and CC genotype, respectively. Gene-environment analyses confirmed the significant influence on hypertension by the interactions between genotypes distribution in rs20456 (CT: <i>p</i>=0.036, TT: <i>p</i>=0.022) and smoking status. No interactions were found between smoking and rs6930913, except those with dominant or recessive genetic models (both <i>P</i> _<i>s</i> =0.006). There were no interactions between KIF6 and overweight (all <i>P</i> _<i>s</i> > 0.05). Haplotype analyses showed that CC (<i>p</i>=0.005) and TC (<i>p</i>=0.001) of rs20456 and rs6930913 were significantly associated with a statistically increased risk of hypertension. The false-positive report probability (FPRP) analysis was used to verify significant findings. In conclusions, KIF6 might affect the susceptibility of hypertension. The allele C (rs20456) and allele T (rs690913) were inclined to protect individuals from hypertension both in genotype and haplotype analyses.</p>","PeriodicalId":14132,"journal":{"name":"International Journal of Hypertension","volume":"2021 ","pages":"1061800"},"PeriodicalIF":1.9,"publicationDate":"2021-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8710155/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39630330","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}

{"title":"Association between ZFHX3 and PRRX1 Polymorphisms and Atrial Fibrillation Susceptibility from Meta-Analysis.","authors":"Liting Wu,&nbsp;Min Chu,&nbsp;Wenfang Zhuang","doi":"10.1155/2021/9423576","DOIUrl":"https://doi.org/10.1155/2021/9423576","url":null,"abstract":"<p><strong>Background: </strong>Atrial fibrillation (AF) is a common, sustained cardiac arrhythmia. Recent studies have reported an association between ZFHX3/PRRX1 polymorphisms and AF. In this study, a meta-analysis was conducted to confirm these associations. <i>Objective and Methods</i>. The PubMed, Embase, and Wanfang databases were searched, covering all publications before July 20, 2020.</p><p><strong>Results: </strong>Overall, seven articles including 3,674 cases and 8,990 healthy controls for ZFHX3 rs2106261 and 1045 cases and 1407 controls for PRRX1 rs3903239 were included. The odds ratio (OR) (95% confidence interval (CI)) was used to assess the associations. Publication bias was calculated using Egger's and Begg's tests. We found that the ZFHX3 rs2106261 polymorphism increased AF risk in Asians (for example, allelic contrast: OR [95% CI]: 1.39 [1.31-1.47], <i>P</i> < 0.001). Similarly, strong associations were detected through stratified analysis using source of control and genotype methods (for example, allelic contrast: OR [95% CI]: 1.51 [1.38-1.64], <i>P</i> < 0.001 for HB; OR [95% CI]: 1.31 [1.21-1.41], <i>P</i> < 0.001 for PB; OR [95% CI]: 1.55 [1.33-1.80], <i>P</i> < 0.001 for TaqMan; and OR [95% CI]: 1.31 [1.21-1.41], <i>P</i> < 0.001 for high-resolution melt). In contrast, an inverse relationship was observed between the PRRX1 rs3903239 polymorphism and AF risk (C-allele <i>vs.</i> T-allele: OR [95% CI]: 0.83 [0.77-0.99], <i>P</i>=0.036; CT <i>vs.</i> TT: OR [95% CI]: 0.79 [0.67-0.94], <i>P</i>=0.006). No obvious evidence of publication bias was observed.</p><p><strong>Conclusions: </strong>In summary, our study suggests that the ZFHX3 rs2106261 and PRRX1 rs3903239 polymorphisms are associated with AF risk, and larger case-controls must be carried out to confirm the abovementioned conclusions.</p>","PeriodicalId":14132,"journal":{"name":"International Journal of Hypertension","volume":"2021 ","pages":"9423576"},"PeriodicalIF":1.9,"publicationDate":"2021-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8692054/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39872163","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}

{"title":"C-Reactive Protein Levels in relation to Incidence of Hypertension in Chinese Adults: Longitudinal Analyses from the China Health and Nutrition Survey.","authors":"Bo Chen,&nbsp;Yuze Cui,&nbsp;Mengyun Lei,&nbsp;Wenlei Xu,&nbsp;Qiongjie Yan,&nbsp;Xiaotong Zhang,&nbsp;Minghui Qin,&nbsp;Shaoyong Xu","doi":"10.1155/2021/3326349","DOIUrl":"https://doi.org/10.1155/2021/3326349","url":null,"abstract":"<p><strong>Objective: </strong>To explore the association between high sensitivity C-reactive protein (hs-CRP) levels and incident hypertension, as well as the association between hs-CRP levels and related covariates, in a Chinese adult population.</p><p><strong>Methods: </strong>This study was based on the China Health and Nutrition Survey, a continuing open, large-scale prospective cohort study. Adult participants who were free of hypertension were included at baseline survey in 2009 and were followed up in 2015 (follow-up rate: 77.45%). The hs-CRP was measured using the immunoturbidimetric method and divided into three groups: low-risk group (0 ≤ hs-CRP <1 mg/L), average-risk group (1 ≤ hs-CRP <3 mg/L), and high-risk group (3 ≤ hs-CRP ≤10 mg/L). Definite diagnosis of hypertension in the follow-up survey in 2015 was the endpoint event of this study. The areas under the curve (AUC) of the receiver operating characteristic (ROC) curve analyses were used to evaluate the predictive value of the hs-CRP.</p><p><strong>Results: </strong>3794 participants were finally included as study sample, of whom 912 developed hypertension during a 6-year follow-up period (incidence: 24.1%). The incidences of hypertension in hs-CRP low-risk, average-risk, and high-risk groups were 17.6% (200/1135), 25.9% (521/2015), and 29.7% (191/644), respectively. Spearman's correlation analyses showed that there was significant positive correlation between hs-CRP levels and waist circumference, total triglycerides, total cholesterol, age, body mass index, and homeostasis model assessment of insulin resistance index. Stepwise regression analyses showed that participants in the hs-CRP high-risk group had a 46.2% higher risk of developing hypertension compared with those in the hs-CRP low-risk group (odds ratio: 1.462, 95% confidence interval: 1.018-2.101). Baseline systolic and diastolic blood pressure levels and waist circumference contributed the most to the development of hypertension with <i>R</i> ² of 0.076, 0.052, and 0.039, respectively, while hs-CRP had lower area under the curve (AUC) for hypertension, adding baseline BP and WC to the prediction model increased the AUC to 0.708 (95% CI: 0.681-0.735).</p><p><strong>Conclusion: </strong>This study revealed a weak positive association between CRP levels and future incidence of hypertension in the Chinese population. The combination of hs-CRP with baseline BP and waist circumference (WC) had a higher predictive value for hypertension (AUC: 0.708), but the predictive value was still limited.</p>","PeriodicalId":14132,"journal":{"name":"International Journal of Hypertension","volume":"2021 ","pages":"3326349"},"PeriodicalIF":1.9,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8683184/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39739987","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}

{"title":"Association of Obesity and Hypertension: A Cohort Study in China.","authors":"Xia Li,&nbsp;Huiqin Niu,&nbsp;XiaoGang Bai,&nbsp;YuWei Wang,&nbsp;Weihua Wang","doi":"10.1155/2021/1607475","DOIUrl":"https://doi.org/10.1155/2021/1607475","url":null,"abstract":"<p><p>The prevalence of general and central obesity has increased rapidly in China for decades, while little is known on obesity-normal weight-central obesity (NWCO) in China. In this study, we aim to depict the trend of the three kinds of obesity and to explore their associations with hypertension in a cohort study in China. We used data from eight waves of the China Health and Nutrition Survey (CHNS) in 1993, 1997, 2000, 2004, 2006, 2009, 2011, and 2015 for analysis. The Cochran-Armitage test was used for trend of the three kinds of obesity or hypertension. Mixed logistic regression was used to explore their relationship. In this study, we found the prevalence of general obesity increased from 20.81% in 1993 to 50.57% in 2015 in China, which was from 19.23% to 56.15% for central obesity and from 27.20% to 49.07% for NWCO, respectively. Males had the highest increase among all the subgroups. The RR for hypertension and general obesity was 3.71 (95%CI: 3.26-4.22), 3.62 (95%CI 3.19-4.12) for central obesity, and 1.60 (95%CI 1.23-2.06) for NWCO after adjusted for age, sex, education, smoking, alcohol drinking, marriage status, urbanicity and income. Both prevalence of obesity and hypertension have increased significantly in China for the two decades. The general obesity was most likely to develop hypertension compared to central or NOCWO in this study.</p>","PeriodicalId":14132,"journal":{"name":"International Journal of Hypertension","volume":"2021 ","pages":"1607475"},"PeriodicalIF":1.9,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8683188/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39739495","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}

{"title":"Effects of Posttrial Antihypertensive Drugs on Morbidity and Mortality: Findings from 15-Year Passive Follow-Up after ALLHAT Ended.","authors":"Xianglin L Du, Lara M Simpson, Brian C Tandy, Judy Bettencourt, Barry R Davis","doi":"10.1155/2021/2261144","DOIUrl":"10.1155/2021/2261144","url":null,"abstract":"<p><strong>Background: </strong>Antihypertensive and Lipid-Lowering Treatment to Prevent Heart Attack Trial (ALLHAT) ended in 2002, but it is important to study its long-term outcomes during the posttrial period by incorporating posttrial antihypertensive medication uses in the analysis.</p><p><strong>Purposes: </strong>The primary aim is to explore the patterns of antihypertensive medication use during the posttrial period from Medicare Part-D data over the 11-year period from 2007 to 2017. The secondary aim is to examine the potential effects of these posttrial antihypertensive medications on the observed mortality and morbidity benefits.</p><p><strong>Methods: </strong>This is a posttrial passive follow-up study of ALLHAT participants in 567 US centers in 1994-1998 with the last date of active in-trial follow-up on March 31, 2002, by linking with their Medicare and National Death Index data through 2017 among 8,007 subjects receiving antihypertensive drugs (3,637 for chlorthalidone, 2,189 for amlodipine, and 2,181 for lisinopril). Outcomes included posttrial antihypertensive drug use, all-cause mortality, and cardiovascular disease (CVD) mortality.</p><p><strong>Results: </strong>Of 8007 subjects, 3,637 participants were initially randomized to diuretic (chlorthalidone). The majority (67.9%) of them still received diuretics in 2007, and 52.7%, 47.2%, and 44.0% received <i>β</i>-blockers, angiotensin-converting enzyme (ACE) inhibitors, and calcium channel blockers (CCBs), respectively. Compared to participants who received diuretic-based antihypertensives, those who received CCB had a nonsignificantly higher risk of all-cause mortality (1.17, 0.99-1.37), whereas those who received ACE/ARB (angiotensin receptor blockers) had a significantly higher risk of all-cause mortality (1.26, 1.09-1.45). For the combined fatal or nonfatal hospitalized events, the risk of CVD was significantly higher in patients receiving CCB (1.30, 1.04-1.61) and ACE/ARB (1.49, 1.22-1.81) as compared to patients receiving diuretics.</p><p><strong>Conclusion: </strong>After the conclusion of the ALLHAT, almost all patients switched to combination antihypertensive therapies, independently by the original drug class, and the combination therapies (mostly based on diuretics) reduced the incidence of major cardiovascular outcomes and mortality.</p>","PeriodicalId":14132,"journal":{"name":"International Journal of Hypertension","volume":"2021 ","pages":"2261144"},"PeriodicalIF":1.9,"publicationDate":"2021-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8677412/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39739496","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}

{"title":"Considering Psychosocial Factors When Investigating Blood Pressure in Patients with Short Sleep Duration: A Propensity Score Matched Analysis.","authors":"Ningjing Qian,&nbsp;Dandan Yang,&nbsp;Huajun Li,&nbsp;Siyin Ding,&nbsp;Xia Yu,&nbsp;Qingqiu Fan,&nbsp;Zhebin Yu,&nbsp;Shenfeng Ye,&nbsp;Hualiang Yu,&nbsp;Yaping Wang,&nbsp;Xiaohong Pan","doi":"10.1155/2021/7028942","DOIUrl":"https://doi.org/10.1155/2021/7028942","url":null,"abstract":"Few studies have considered psychosocial characteristics when investigating the associations between sleep duration and blood pressure (BP). In this study, we took propensity score matching (PSM) to adjust for psychosocial characteristics when comparing BP between individuals with short sleep duration and those with normal sleep duration. A total of 429 participants were included. 72 participants with sleep duration ≤6 h and 65 participants with sleep duration >6 h were matched after PSM. We compared office BP, 24-hour BP, and prevalence of hypertension in the populations before and after PSM, respectively. In the unmatched population, participants with sleep duration ≤6 h were observed with higher office diastolic BP (DBP) and 24-h systolic BP (SBP)/DBP (all P < 0.05). In the matched populations, the differences between the two groups (sleep duration ≤6 h vs. sleep duration >6 h) in office DBP (88.4 ± 10.9 vs. 82.5 ± 11.1 mm Hg; P=0.002), 24-h SBP (134.7 ± 12.0 vs. 129.3 ± 11.6 mm Hg; P=0.009), and 24-h DBP (83.4 ± 9.9 vs. 78.1 ± 10.1 mm Hg; P=0.002) become more significant. Participants with sleep duration ≤6 h only show higher prevalence of hypertension based on 24-h BP data, while analysis after PSM further revealed that these with sleep duration ≤6 h presented about 20% higher prevalence of elevated BP up to office diagnosed hypertension threshold. Therefore, psychosocial characteristics accompanied with short sleep duration should be fully valued in individuals at risks for elevated BP. This trial is registered with NCT03866226.","PeriodicalId":14132,"journal":{"name":"International Journal of Hypertension","volume":"2021 ","pages":"7028942"},"PeriodicalIF":1.9,"publicationDate":"2021-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8651353/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39709815","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}

{"title":"Disturbances of the Gut Microbiota, Sleep Architecture, and mTOR Signaling Pathway in Patients with Severe Obstructive Sleep Apnea-Associated Hypertension.","authors":"Chih-Yuan Ko,&nbsp;Huan-Zhang Su,&nbsp;Li Zhang,&nbsp;Yi-Ming Zeng","doi":"10.1155/2021/9877053","DOIUrl":"https://doi.org/10.1155/2021/9877053","url":null,"abstract":"<p><p>Intermittent hypoxia and sleep fragmentation are pathophysiological processes involved in obstructive sleep apnea (OSA) which affect gut microbiota, sleep architecture, and mTOR signaling pathway. However, the involvement of these elements in the pathogenesis mechanism of OSA-associated hypertension remains unclear. Therefore, this study investigated whether the OSA-associated hypertension mechanism is regulated by the gut microbiota and mTOR signaling pathway. Patients were diagnosed by polysomnography; their fecal samples were obtained and analyzed for their microbiome composition by 16S ribosomal RNA pyrosequencing and bioinformatics analysis. Transcript genes on fasting peripheral blood mononuclear cells (PBMCs) were examined using Illumina RNA-sequencing analysis. Totally, we enrolled 60 patients with severe OSA [without hypertension (<i>n</i> = 27) and with hypertension (<i>n</i> = 33)] and 12 controls (neither OSA nor hypertension). Results revealed that severe-OSA patients with hypertension had an altered gut microbiome, decreased short-chain fatty acid-producing bacteria (<i>P</i> < 0.05), and reduced arginine and proline metabolism pathways (<i>P</i>=0.001), compared with controls; also, they had increased stage N1 sleep and reduced stages N2 and N3 sleep accompanied by repeated arousals (<i>P</i> < 0.05). Analysis of PBMCs using the Kyoto Encyclopedia of Genes and Genomes database showed that the mTOR signaling pathway (<i>P</i>=0.006) was the most important differential gene-enriched pathway in severe-OSA patients with hypertension. Our findings extend prior work and suggest a possibility that the regulation of the mTOR signaling pathway is involved in developing OSA-associated hypertension through its interaction with the disturbance of the gut microbiome and sleep architecture.</p>","PeriodicalId":14132,"journal":{"name":"International Journal of Hypertension","volume":"2021 ","pages":"9877053"},"PeriodicalIF":1.9,"publicationDate":"2021-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8651365/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39709816","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}

{"title":"Prevalence of Erectile Dysfunction and Associated Factors among Hypertensive Patients Attending Governmental Health Institutions in Gondar City, Northwest Ethiopia: A Cross-Sectional Study.","authors":"Deribew Abebaw Abuhay,&nbsp;Yibeltal Yismaw Gela,&nbsp;Ayechew Adera Getu","doi":"10.1155/2021/1482500","DOIUrl":"https://doi.org/10.1155/2021/1482500","url":null,"abstract":"<p><strong>Introduction: </strong>Erectile dysfunction is a common sexual problem affecting men with hypertension. It may result in withdrawal from sexual engagement, decreased work productivity, psychosocial problems including poor self-esteem and depression, and reduction in quality of life for both the affected men and their female partners.</p><p><strong>Objective: </strong>This study was aimed to determine the prevalence of erectile dysfunction and associated factors among hypertensive patients attending governmental health institutions in Gondar city, Northwest Ethiopia.</p><p><strong>Materials and methods: </strong>An institutional-based cross-sectional study was conducted on 423 hypertensive men randomly selected using a systematic random sampling technique. Erectile dysfunction was assessed using the International Index of Erectile Function-5 tool. Sociodemographic, clinical, and behavioral factors were also collected using pretested interviewer-administered questionnaires. Data were entered into EpiData version 4.6 and analyzed using Stata-14. Binary logistic regression was performed to identify factors associated with erectile dysfunction. The level of significance was computed at a <i>p</i> value ≤ 0.05.</p><p><strong>Results: </strong>The mean age of the study participants was 58.84 ± 13.52 years. The prevalence of erectile dysfunction among hypertensive men was 46.34% (95% CI: 41.61, 51.12). About 28% of them had a mild form of erectile dysfunction while nearly 6% had severe forms. Age above 60 years (AOR = 3.8, 95% CI: 1.62, 6.55), stage II hypertension (AOR = 3.5, 95% CI: 1.63, 5.74), hypertension duration >10 years (AOR = 2.5, 95% CI:1.12, 4.19), comorbidity (AOR = 1.7, 95% CI: 1.04, 3.15), depression (AOR = 2.35, 95% CI: 1.31, 4.21), and being physically active (AOR = 0.48, 95% CI: 0.28, 0.83) were factors significantly associated with erectile dysfunction.</p><p><strong>Conclusion: </strong>Nearly half of the study participants had some form of erectile dysfunction, indicating the presence of a high burden of the problem. Assessment of hypertensive men for erectile dysfunction should be part of routine medical care.</p>","PeriodicalId":14132,"journal":{"name":"International Journal of Hypertension","volume":"2021 ","pages":"1482500"},"PeriodicalIF":1.9,"publicationDate":"2021-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8642021/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39694846","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}

{"title":"Sympathetic Nerve Activity and Baroreflex are Strongly Altered in a Context of Severe Hypertension Using the Spontaneously Hypertensive Rat Model Associated with Chronic Reduction of Nitric Oxide.","authors":"Christine Vayssettes-Courchay,&nbsp;Jonathan Melka,&nbsp;Clothilde Philouze,&nbsp;Najah Harouki","doi":"10.1155/2021/4808657","DOIUrl":"https://doi.org/10.1155/2021/4808657","url":null,"abstract":"<p><p>The aim of our study is to investigate the sympathetic output and baroreflex via renal sympathetic nerve activity (RSNA) recording in a model of severe hypertension which exhibits arterial, cardiac, and renal damages, the spontaneously hypertensive rat (SHR) under lowered NO bioavailability. SHR are treated from 18 to 20 weeks of age with a low dose of L-NAME, a NO synthase inhibitor, in drinking water (SHRLN) and compared to SHR and normotensive Wistar Kyoto (WKY) rats. After the two-week treatment, rats are anesthetized for RSNA, mean blood pressure (MBP), and heart rate (HR) recording. MBP is higher in SHR than in WKY and higher in SHRLN than in SHR. Compared to WKY, SHR displays an alteration in the baroreflex with a displacement of the sympathoinhibition curve to highest pressures; this displacement is greater in SHRLN rats. The bradycardic response is reduced in SHRLN compared to both SHR and WKY. In hypertensive rats, SHR and SHRLN, basal RSNA is modified, the maximal amplitude of burst is reduced, but minimal values are increased, indicating an increased basal RSNA with reduced bursting activity. The temporal correlation between RSNA and HR is preserved in SHR but altered in 10 SHRLN out of 10. The RSNA inhibition triggered by the Bezold-Jarisch reflex activation is not modified in hypertensive rats, SHR or SHRLN, in contrast to that triggered by the baroreflex. Histological analysis of the carotid bifurcation does not reveal any abnormality in SHRLN at the level of the carotid sinus. In conclusion, data indicate that the sympathetic outflow is altered in SHRLN with a strong reduction of the baroreflex sympathoinhibition and suggest that its central pathway is not involved. These additional results on SHRLN also confirm the usefulness of this model of severe hypertension with multiple target organ damages.</p>","PeriodicalId":14132,"journal":{"name":"International Journal of Hypertension","volume":"2021 ","pages":"4808657"},"PeriodicalIF":1.9,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8639277/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39694847","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}

{"title":"Irisin Is Correlated with Blood Pressure in Obstructive Sleep Apnea Patients.","authors":"Xing Wang, Zhengjiao Zhang, Xiaoxin Lan, Keyou Fu, Guanhua Xu, Jingyi Zhao, Haibo Yuan","doi":"10.1155/2021/4717349","DOIUrl":"10.1155/2021/4717349","url":null,"abstract":"<p><strong>Background: </strong>Despite approximately 95% primary cases of hypertension, secondary hypertension seems to be common with resistant forms. Notably, obstructive sleep apnea (OSA) is known as a common cause of secondary hypertension and has a major characteristic of obesity. Irisin acts as a link between muscles and adipose tissues in obesity, playing an essential role in human blood pressure (BP) regulation. However, whether irisin is associated with secondary hypertension caused by OSA and how it takes effect essentially have not been elucidated.</p><p><strong>Purpose: </strong>To investigate the changes of irisin and its relationship with BP in OSA.</p><p><strong>Methods: </strong>72 snoring patients finished Epworth Sleep Scale (ESS) evaluation before polysomnography (PSG). BP was the average of three brachial BP values by mercury sphygmomanometer. Serum irisin level was determined by enzyme-linked immunosorbent assay (ELISA). Results were analyzed by SPSS software.</p><p><strong>Results: </strong>Irisin was higher in the severe and quite severe group than that in control and nonsevere groups (<i>p</i> < 0.05). For BP, significant differences were found between the control group and the other three groups (<i>p</i> < 0.05) and between the quite severe and the other three groups (<i>p</i> ≤ 0.001). Positive correlations were found between irisin and apnea-hypopnea index (AHI), AHI and BP, and irisin level and BP. Negative correlations were between irisin and SpO₂ nadir and SpO₂ nadir and BP. Positive correlation still existed between AHI and irisin even after adjusting for some obesity-related variables.</p><p><strong>Conclusions: </strong>Irisin may serve as a potential biomarker for severity of OSA independently of obesity and imply the development of hypertension.</p>","PeriodicalId":14132,"journal":{"name":"International Journal of Hypertension","volume":"2021 ","pages":"4717349"},"PeriodicalIF":1.9,"publicationDate":"2021-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8601862/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39643939","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}