Clinical and Experimental Hypertension最新文献

{"title":"Mat Pilates training reduces blood pressure in both well-controlled hypertensive and normotensive postmenopausal women: a controlled clinical trial study","authors":"J. Batista, J. B. Tavares, L. F. Gonçalves, T. D. de Souza, I. Mariano, A. Amaral, Mateus de Lima Rodrigues, L. Matias, Ana Paula Magalhães Resende, G. Puga","doi":"10.1080/10641963.2022.2079670","DOIUrl":"https://doi.org/10.1080/10641963.2022.2079670","url":null,"abstract":"ABSTRACT Aim The aim of this study was to compare the Mat Pilates training-induced responses in resting and ambulatory blood pressure monitoring (ABPM), blood pressure variability (BPV), and heart rate variability (HRV) in well-controlled hypertensive and normotensive postmenopausal women. Methods Forty-seven postmenopausal women were allocated in well-controlled hypertensive (HT) and normotensive (NT) groups. The exercise program was performed three times a week for 12 weeks. Before and after the intervention resting, blood pressure (BP), ABPM, HRV, and BPV were analyzed. Results Student’s t-test showed no difference in baseline anthropometric and resting BP values between groups. The generalized estimation equation (GEE) showed no interactions (group*time), but time (p < .05) reductions in resting systolic, diastolic and mean BP after training in both groups. Sleep ambulatory systolic, diastolic and mean BP were higher overall in the HT group (p < .05 in group effect). We also found a time effect (p < .05) with significant increases in BPV in the mean diurnal and nocturnal deviations weighted for the duration of the daytime and nighttime interval (SDdn) in systolic, diastolic and mean BP, and in the average real variability (ARV) in diastolic and mean in both groups. In addition, HRV increases (p < .05 in time effect) through the percentage of pairs of adjacent RR intervals with a difference of at least 50 ms (pNN50) after training in both groups. Conclusion Both normotensive and well-controlled hypertensive postmenopausal women may have similar Mat Pilates exercise training-induced responses in ambulatory BP, BPV and HRV.","PeriodicalId":10333,"journal":{"name":"Clinical and Experimental Hypertension","volume":"26 1","pages":"548 - 556"},"PeriodicalIF":12.3,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80052235","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":"Association of red blood cell distribution width, systemic-immune-inflammation index and poor cardiovascular outcomes in patients with newly diagnosed hypertension","authors":"F. Uzun, A. Güner, H. Pusuroğlu, A. Demir, S. Gündüz, İsmail Gürbak, S. Aslan, Gokhan Demirci, Ezgi Gültekin Güner, Enes Arslan, M. Erturk","doi":"10.1080/10641963.2022.2079668","DOIUrl":"https://doi.org/10.1080/10641963.2022.2079668","url":null,"abstract":"ABSTRACT Background Red cell distribution width (RDW) and the systemic immune-inflammation index (SII) have been extensively studied as predictors of morbidity and mortality in several cardiovascular diseases. This prospective study aimed to investigate the relationship between long term major adverse cardiac events (MACEs) and simple hematological parameters in hypertensive patients. Methods The study included a total of 1202 patients with newly diagnosed HT. Of the patients, 662 (55.1%) were female and 540 (44.9%) were male, with a mean age of 53.0 ± 11.4 years. The primary endpoint of the study was long term MACE, including cardiac death, stroke, and myocardial infarction. This is the first study focusing on the association of SII with major adverse cardiovascular outcomes in patients with HT. Results Eighty-nine patients (8.7%) developed at least one MACE during a mean follow-up period of 82.2 ± 1.3 months. RDW (13.0 ± 0.9 vs. 13.5 ± 1.2%, p < .001) and SII [465.0 (353.4–609.4) vs. 584.4 (468.9–794.0) x103/µL, p < .001] were significantly higher in patients with MACEs. The prevalence of MACEs was significantly higher in patients with RDW>13.1% (10.4 vs. 5%; p < .001) and in patients with SII>465 x103/µL (11.8 vs. 3.1%; p < .001). The multivariate logistic regression analysis showed SII and RDW were independent predictors of MACEs. Conclusion The results of the study demonstrated that the RDW and SII were independent predictors of long-term cardiovascular events in hypertensive patients. These simple hematological parameters may be used as prognosticators of MACE in patients with newly diagnosed HT.","PeriodicalId":10333,"journal":{"name":"Clinical and Experimental Hypertension","volume":"36 1","pages":"530 - 538"},"PeriodicalIF":12.3,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84877598","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":"Antihypertensive effect and the underlying mechanisms of action of phytolaccagenin in rat models","authors":"Imran Ul haq, T. Ahmad, T. Khan, A. Shah","doi":"10.1080/10641963.2022.2079671","DOIUrl":"https://doi.org/10.1080/10641963.2022.2079671","url":null,"abstract":"ABSTRACT Background Phytolaccagenin, a natural triterpenoid, is reported for various biological activities that indicate its potential role in the management of hypertension. Methods Phytolaccagenin was evaluated for its antihypertensive activity in rat models via in vivo and in vitro experiments using polyethylene tubings for cannulation, organ bath bubbled with carbogen gas, and a pressure transducer connected to a PowerLab data acquisition system. Results Intravenous administration of phytolaccagenin decreased mean arterial pressure (MAP), significantly, in normotensive and hypertensive anesthetized rats. Pretreatment of rats with atropine (2 mg/kg) partially reversed the decrease in blood pressure due to phytolaccagenin at first tested doses. However, Nω-nitro-L-arginine methyl ester (L-NAME) (100 mg/kg) pretreatment modified the effect of phytolaccagenin on blood pressure with greater response. In isolated rat aortic rings precontracted with phenylephrine, cumulative addition of phytolaccagenin induced relaxation that is ablated (50%) with denudation and pre-incubation with atropine (1 μM) and L-NAME (10 μM). Phytolaccagenin also partially inhibited high K+ precontraction at initial doses, while an inhibitory effect was observed at higher concentrations, confirming its effect on voltage-dependent calcium channels. In isolated spontaneously beating rat atrial strips, phytolaccagenin suppressed the atrial tone that was reduced with isoprenaline and atropine pre-incubation, suggesting the role of cardiac adrenergic and muscarinic receptors. Interestingly, atenolol (1 μM) pretreatment also ablated the cardiac effects of phytolaccagenin. Conclusion The antihypertensive effect of phytolaccagenin is due to a decrease in vascular resistance and cardiac depressant effects. These effects are mediated via muscarinic receptors-linked NO pathway, inhibitory effect on Ca2+ movements (vascular), and activation of cardiac muscarinic and blockade of β-adrenergic receptors.","PeriodicalId":10333,"journal":{"name":"Clinical and Experimental Hypertension","volume":"11 1","pages":"557 - 566"},"PeriodicalIF":12.3,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78606604","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":"A potential model of systemic sclerosis with pulmonary hypertension induced by monocrotaline plus bleomycin","authors":"Xia Fang, Chao He, Xudong Ni, Tianli Zhang, Qianyu Li, Yi Luo, Wei-guo Long, R. Wu","doi":"10.1080/10641963.2022.2079665","DOIUrl":"https://doi.org/10.1080/10641963.2022.2079665","url":null,"abstract":"ABSTRACT Objective The lack of a well-established animal model limits the clarification of the detailed mechanisms of the pathogenesis of systemic sclerosis with pulmonary hypertension (SSc-PH) and the development of effective treatments for it. Methods In this study, New Zealand rabbits were injected with monocrotaline (MCT), bleomycin (BLM), and MCT plus BLM, respectively. Three and six weeks after the first injection, the mean pulmonary artery pressure (mPAP) was measured. Skin and lung samples were isolated and the histological changes were analyzed by hematoxylin and eosin staining or Masson’s trichrome staining. Results All groups of rabbits showed an increased mean mPAP compared with the saline-injected rabbits. The high mPAP persisted until week six only in the MCT and MCT + BLM groups. Furthermore, persistent high Fulton’s indices were found in the MCT and MCT + BLM groups, indicating that these treatments successfully induced right ventricular hypertrophy. The rabbits in the MCT + BLM group developed severe lung inflammation, as evidenced by a high level of neutrophil infiltration in the pulmonary interstitium. Importantly, pathological changes of the skin in the MCT + BLM group were observed, and further damage to the skin was caused by additional exposure to MCT plus BLM. Meanwhile, an excessive production of cytokines, including tumor necrosis factor alpha (TNF-α), and transforming growth factor beta 1 (TGF-β1), were detected in the MCT + BLM group. Conclusion These data indicate that SSc-PH induced by co-injection with MCT plus BLM shows persistent fibrosis and progressive PH, constituting a potential study model for SSc-PH.","PeriodicalId":10333,"journal":{"name":"Clinical and Experimental Hypertension","volume":"22 1","pages":"507 - 513"},"PeriodicalIF":12.3,"publicationDate":"2022-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82796498","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 association between serum ferritin and blood pressure in adult women: a large cross-sectional study","authors":"Andong He, Xiaofeng Yang, Yuzhen Ding, Lu Sun, M. Shi, Ruiman Li","doi":"10.1080/10641963.2022.2079667","DOIUrl":"https://doi.org/10.1080/10641963.2022.2079667","url":null,"abstract":"ABSTRACT Background Studies on the relationships between ferritin and blood pressure remain limited, especially in adult women. The aim of the present study was to investigate the associations between serum ferritin and blood pressure among adult women. Methods Using the National Health and Nutrition Examination Survey, a cross-sectional study, including 5521 adult women, was performed. Weighted multivariate regressions, subgroup analyses, threshold effect analyses, and sensitivity analysis were used. Results The authors found that serum ferritin was independently and positively correlated to diastolic blood pressure (DBP), and this positive correlation kept present among women who are 26–30 years old, non-pregnant women, Mexican American women, and women of other races in the subgroup analyses. Additionally, no significant association was found between serum ferritin and systolic blood pressure (SBP), except in women aged 26–30, Mexican American women, and women of other races. In pregnant women, the association between serum ferritin and SBP was an inverted U-shaped curve with an inflection point at 39.5 ng/mL. Conclusions The authors demonstrated that serum ferritin was positively correlated to DBP in adult women, which may provide a novel reference for clinical management.","PeriodicalId":10333,"journal":{"name":"Clinical and Experimental Hypertension","volume":"13 1","pages":"523 - 529"},"PeriodicalIF":12.3,"publicationDate":"2022-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80702385","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":"Short-term effects of modest salt reduction combined with DASH diet on changing salt eating habits in hypertensive patients with type II diabetes","authors":"Dan Chen, Jie Tang, Tao Gong, Lisha Mu, Jing Li, Pi-Ching Yu, Hao Wang, X. Bu, L. Mu, Ying Mei","doi":"10.1080/10641963.2022.2079666","DOIUrl":"https://doi.org/10.1080/10641963.2022.2079666","url":null,"abstract":"ABSTRACT Objective Excessive salt intake is currently the foremost universal risk factor for controllable chronic disease. This study evaluated the short-term effects of a modest salt intake reduction combined with the Chinese Modified Dietary Approaches to Stop Hypertension (CM-DASH) diet on sodium and potassium intake, mean arterial pressure (MAP), and pulse pressure (PP) in hypertensive patients with type II diabetes. Methods Sixty-one participants were randomized to the intervention group (52% low-sodium salt and DASH) and control group (normal salt and DASH). An 8-week dietary intervention was applied. Daily salt intake, blood pressure (BP), and drug use were recorded every week. Twenty-four-hour urine, casual urine, and blood samples were measured at baseline, the 4th week, and the end of the intervention. Results Fifty-nine patients (25 men) completed the entire study. Sodium intake decreased by 1259.66 (792.76, 1726.56)/705.80 (149.21, 1262.39) mg/day after 4 weeks (intervention: P < .001; control: P = .015). Potassium intake increased by 641.14 (73.31, 1208.96)/43.43 (−259.66, 346.53) mg/day (intervention: P = .028); MAP decreased by 9.06 (6.69, 11.43)/7.16 (4.03, 10.28) mmHg (both: P < .001); PP decreased by 7.97 (3.05, 12.88)/5.74 (2.55,8.94) mmHg (intervention: P = .002; control: P = .001) after 8 weeks. However, the difference between the two groups was not statistically significant. Conclusion Modest salt reduction and the CM-DASH diet for hypertensive patients with type II diabetes can achieve short-term salt reduction effects. The effect on changing salt-eating habits needs to be investigated with an extended follow-up.","PeriodicalId":10333,"journal":{"name":"Clinical and Experimental Hypertension","volume":"38 1","pages":"514 - 522"},"PeriodicalIF":12.3,"publicationDate":"2022-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88434298","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":"Astaxanthin attenuates cardiovascular dysfunction associated with deoxycorticosterone acetate-salt-induced hypertension in rats.","authors":"Suzan A Khodir,&nbsp;Eman Sweed,&nbsp;Marwa Gadallah,&nbsp;Anwaar Shabaan","doi":"10.1080/10641963.2022.2055764","DOIUrl":"https://doi.org/10.1080/10641963.2022.2055764","url":null,"abstract":"<p><strong>Background: </strong>Hypertension is a major global health problem. It is a major risk factor of cardiovascular disease. One of the most used experimental models in studying antihypertensive action is the deoxycorticosterone acetate (DOCA)-salt hypertensive rat. This study aimed to investigate the cardiovascular protective effect of astaxanthin (ASX) in DOCA-salt-induced hypertension and its possible underlying mechanisms.</p><p><strong>Methods: </strong>A total of 48 adult male Wistar albino rats were divided into three groups: control, DOCA, and DOCA + ASX. Blood pressure, serum cardiac enzyme levels, some oxidative stress and inflammatory biomarker levels, and lipid profile levels were measured. The weight of the left ventricle to tibial length ratio was calculated. Apoptosis detection and total genomic DNA extraction in aortic and cardiac tissues were investigated. The apoptotic marker BAX was also immunohistochemically assessed in the heart and aorta.</p><p><strong>Results: </strong>Compared to the control group, the DOCA group was associated with a significant increase in blood pressure, serum cardiac enzyme levels, oxidative stress and inflammatory biomarker levels, lipid profile except serum high-density lipoprotein (HDL), weight of the left ventricle to tibial length, and total released DNA fragmentation level of the left ventricle and aorta and a significant decrease in reduced glutathione (GSH) and HDL. Compared to the DOCA group, the DOCA + ASX group significantly improved the DOCA-induced changes.</p><p><strong>Conclusion: </strong>ASX has beneficial protective effects on DOCA-salt-induced hypertension via DNA fragmentation protection, apoptosis inhibition, antioxidant, anti-inflammatory, and its effects on lipid levels.</p>","PeriodicalId":10333,"journal":{"name":"Clinical and Experimental Hypertension","volume":"44 4","pages":"382-395"},"PeriodicalIF":12.3,"publicationDate":"2022-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9872981","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":"Neutrophil count is a useful marker to predict the severity of preeclampsia.","authors":"Miao Liu,&nbsp;Peng Lin,&nbsp;Miaomiao Qu,&nbsp;Ruixia Zhai,&nbsp;Liangjiao Zhang,&nbsp;Lihua Zhang,&nbsp;Liangxi Zhu,&nbsp;Chan Liu,&nbsp;Hua Shu,&nbsp;Xueqin Feng,&nbsp;Chunlong Su,&nbsp;Tiantian Yu,&nbsp;Fengge Wang,&nbsp;Dongmei Man","doi":"10.1080/10641963.2022.2043891","DOIUrl":"https://doi.org/10.1080/10641963.2022.2043891","url":null,"abstract":"<p><strong>Background: </strong>At present, pre-eclampsia is a growing concern and still a diagnostic challenge for obstetricians.</p><p><strong>Aims: </strong>This study aimed to evaluate whether the relationship of second trimester of pregnancy neutrophil count differed among pregnancies with mild preeclampsia, severe preeclampsia, and healthy status and explore whether or not neutrophil count in the second trimester of pregnancy would be useful as new predictors of subsequent preeclampsia.</p><p><strong>Patients and methods: </strong>This study involved 933 pregnancies from 1 January 2018 to 30 January 2021, comprising 396 healthy pregnancies, 222 pregnancies with mild preeclampsia, and 315 pregnancies with severe preeclampsia. The relationship between preeclampsia and neutrophil count was analyzed by multiple logistic regression. In addition, maternal placental tissues of three groups were immunohistochemically stained for myeloperoxidase (MPO).</p><p><strong>Results: </strong>Neutrophil count was significantly higher in pregnancies with preeclampsia (including pregnancies with mild and severe preeclampsia) than that in healthy pregnancies. The neutrophil count level was prominently higher in patients with severe preeclampsia compared with those with mild preeclampsia (p < .001). The neutrophil count level was significantly positively associated with preeclampsia after adjusting for gestational week at time of blood sampling, BMI, and age (β:1.23; 95%CI:1.09-1.36; p < .0001). In addition, MPO expressions of placental tissues in preeclamptic groups were significantly increased than these in healthy pregnant controls (p < .05).</p><p><strong>Conclusions: </strong>Increased neutrophil count in the second trimester of pregnancy was significantly positively associated with preeclampsia. Hence, neutrophil count plays a role in predicting the severity of preeclampsia. At the same time, it may be an independent predictor of subsequent preeclampsia.<b>Abbreviations:</b> BMI: body mass index; MPO: myeloperoxidase.</p>","PeriodicalId":10333,"journal":{"name":"Clinical and Experimental Hypertension","volume":"44 4","pages":"334-340"},"PeriodicalIF":12.3,"publicationDate":"2022-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9872984","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 prognostic role of intra-aortic pulse pressure measured before percutaneous coronary intervention in patients with chronic coronary syndrome: a single-center, retrospective, observational cohort study.","authors":"Halil Aktas,&nbsp;Murat Gul","doi":"10.1080/10641963.2022.2043893","DOIUrl":"https://doi.org/10.1080/10641963.2022.2043893","url":null,"abstract":"<p><strong>Background: </strong>The relationship between pulse pressure and prognosis in patients with chronic coronary syndrome (CCS) is contradictory. In the present study, we aimed to examine the relationship between intra-aortic pulse pressure (IAPP) and major adverse cardiovascular events (MACE) in patients with CCS undergoing percutaneous coronary intervention (PCI).</p><p><strong>Methods: </strong>A total of 139 CCS patients who underwent elective PCI with regular one-year follow-up, were stratified into two subgroups according to IAPP. The primary outcomes included the occurrence of MACE, defined as cardiovascular death, acute myocardial infarction with ST-segment elevation (STEMI), acute myocardial infarction without ST-segment elevation (NSTEMI), target vessel revascularization (TVR), and stroke.</p><p><strong>Results: </strong>The mean age of the patients was 57.6 ± 10.4 years, 32% of whom were female. The mean IAPP, systolic blood pressure (SBP), and diastolic blood pressure (DBP) were 54.0 ± 17.6 mmHg, 129.7 ± 20 mmHg, and 75.8 ± 11.8 mmHg, respectively. SBP, IAPP, and left ventricular ejection fraction (LVEF) were significantly higher in the high IAPP group (p < .001, p < .001, p = .001, respectively). The MACE rate was significantly higher in the low IAPP group than in the high IAPP group (30.4% vs. 8.6%, p = 0,001). The LVEF (OR = 0.93, CI:0.88-0.99, p = .025) and IAPP (OR = 0.89, CI:0.83-0.95, p = .001) were found to be independent predictors of MACE. The IAPP value of 39.5 mmHg was identified as an effective cutoff point for prediction of MACE-free survival rates (AUC:0.853, CI:0.768-0.937).</p><p><strong>Conclusion: </strong>Invasively measured IAPP has prognostic information about cardiovascular outcomes in patients with CCS. The risk of MACE is significantly greater in CCS patients with low IAPP compared with those who have high IAPP values.</p>","PeriodicalId":10333,"journal":{"name":"Clinical and Experimental Hypertension","volume":"44 4","pages":"347-354"},"PeriodicalIF":12.3,"publicationDate":"2022-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9511154","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":"Cardiovascular responses induced by the activation of muscarinic receptors of the pedunculopontine tegmental nucleus in anesthetized rats.","authors":"Vida Alikhani,&nbsp;Tahereh Nikyar,&nbsp;Reza Mohebbati,&nbsp;Mohammad Naser Shafei,&nbsp;Atiyeh Ghorbani","doi":"10.1080/10641963.2021.2007944","DOIUrl":"https://doi.org/10.1080/10641963.2021.2007944","url":null,"abstract":"<p><strong>Background: </strong>The cardiovascular effects of nicotinic receptors of cholinergic system in the pedunculopontine tegmental nucleus (PPT) were shown.</p><p><strong>Objective: </strong>In the following, the cardiovascular effects of the muscarinic receptor, another receptor in this system, were examined.</p><p><strong>Methods: </strong>Rats were divided into eight groups: 1) control; 2 and 3) Ach (acetylcholine, an agonist) 90 and 150 nmol; 4 and 5) Atr (atropine; a muscarinic antagonist) 3 and 9 nmol; 6) Atr 3 + Ach 150; 7) Atr 9 + Ach 150; and 8) Atr 3 + hexamethonium (Hexa; 300 nmol) + Ach 150. After anesthesia, cannulation of the femoral artery was performed, and then the mean arterial pressure (MAP), systolic blood pressure (SBP), and heart rate (HR) were recorded using a power lab apparatus.</p><p><strong>Results: </strong>Following drug microinjection, the maximum change (Δ) in MAP, SBP, and HR was calculated and analyzed. Both doses of Ach (90 and 150) significantly decreased ΔMAP and ΔSBP but could not change ΔHR. Neither of the doses of Atr significantly affected ΔMAP, ΔSBP, and ΔHR. Co-injection of Atr 3 + Ach 150 only increased ΔHR, but Atr 9 + Ach 150 decreased ΔMAP and ΔSBP than Ach 150 alone. The effect of the co-injection of Atr 9 + Hexa 300 + Ach 150 was also the same as the Atr 9 + Ach 150 group.</p><p><strong>Conclusion: </strong>The present results revealed that cholinergic muscarinic receptors in the PPT have an inhibitory effect on MAP and SBP with no important effect on HR.</p>","PeriodicalId":10333,"journal":{"name":"Clinical and Experimental Hypertension","volume":"44 4","pages":"297-305"},"PeriodicalIF":12.3,"publicationDate":"2022-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9518736","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}