scholarly journals In vivo study of the antihypertensive effect of bidara leaf (Ziziphus spina-christi) during pregnancy

MEDISAINS ◽  
2021 ◽  
Vol 19 (2) ◽  
pp. 35
Author(s):  
Tasya Nurlaila Dilla ◽  
Suharyo Hadisaputro ◽  
Aris Santjaka
Keyword(s):  
Blood Pressure ◽  
Leaf Extract ◽  
Dose Group ◽  
Control Group ◽  
Pregnant Rats ◽  
Free Radical Damage ◽  
Drought Tolerant ◽  
Female Wistar Rats ◽  
Tropical Climates

Background: Bidara is drought tolerant and very easy to grow in tropical climates such as Indonesia. Bidara contains a combination of calcium, potassium, and magnesium, and active flavonoid compounds, and antioxidant activity that play a role in inhibiting free radical damage, improving endothelial function so that it can potentially lower blood pressure. Previous studies explained that a dose variant of no more than 300mg/kg BW is beneficial while minimizing pathological changes. However, there has been no research related to the effect of bidara leaf in lowering blood pressure, so it is necessary to do related research.Objective: Analyze the effect of bidara leaf extract at a 200 mg/kg BW dose and 300 mg/kg BW on systolic and diastolic blood pressure.Methods: 24 pregnant female Wistar rats induced hypertension, aged 6-8 weeks with a weight of 130-230 grams. The rats were randomized so that they consisted of 2 control groups and two experimental groups, which were given various doses of bidara leaf for nine days. Blood pressure was measured using non-invasive CODA.Results: The blood pressure of rats in the bidara leaf extract group at doses of 200mg/kg BW and 300mg/kg BW decreased systolic and diastolic compared to the control group (p<0.05). The 200mg/kg BW dose group experienced a decrease in blood pressure of 12.3% for systolic and 16.32% for diastolic; the 300mg/kg BW dose group experienced a decrease in blood pressure of 19.99% for systolic and 27.73% for diastolic.Conclusion: Bidara leaf extract can reduce the blood pressure of pregnant rats with hypertension.

scholarly journals The effect of chronic nitric oxide inhibition on vascular reactivity and blood pressure in pregnant rats

1999 ◽  
Vol 117 (5) ◽  
pp. 197-204 ◽  
Author(s):  
Nilton Hideto Takiuti ◽  
Maria Helena Cetelli Carvalho ◽  
Soubhi Kahhale ◽  
Dorothy Nigro ◽  
Hermes Vieira Barbeiro ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Blood Pressure ◽  
Vascular Reactivity ◽  
Unit Weight ◽  
Control Group ◽  
Pregnant Rats ◽  
Nitric Oxide Inhibition ◽  
Female Wistar Rats ◽  
Main Component ◽  
Oxide Inhibition

CONTEXT: The exact mechanism involved in changes in blood pressure and peripheral vascular resistance during pregnancy is unknown. OBJECTIVE:To evaluate the importance of endothelium-derivated relaxing factor (EDRF) and its main component, nitric oxide, in blood pressure and vascular reactivity in pregnant rats. DESIGN: Clinical trial in experimentation animals. SETTING: University laboratory of Pharmacology. SAMPLE: Female Wistar rats with normal blood pressure, weight (152 to 227 grams) and age (90 to 116 days). INTERVENTION: The rats were divided in to four groups: pregnant rats treated with L-NAME (13 rats); pregnant control rats (8 rats); virgin rats treated with L-NAME (10 rats); virgin control rats (12 rats). The vascular preparations and caudal blood pressure were obtained at the end of pregnancy, or after the administration of L-NAME in virgin rats. MAIN MEASUREMENTS: The caudal blood pressure and the vascular response to acetylcholine in pre-contracted aortic rings, both with and without endothelium, and the effect of nitric oxide inhibition, Nw-L-nitro-arginine methyl-ester (L-NAME), in pregnant and virgin rats. The L-NAME was administered in the drinking water over a 10-day period. RESULTS: The blood pressure decreased in pregnancy. Aortic rings of pregnant rats were more sensitive to acetylcholine than those of virgin rats. After L-NAME treatment, the blood pressure increased and relaxation was blocked in both groups. The fetal-placental unit weight of the L-NAME group was lower than that of the control group. CONCLUSION: Acetylcholine-induced vasorelaxation sensitivity was greater in pregnant rats and that blood pressure increased after L-NAME administration while the acetylcholine-induced vasorelaxation response was blocked.

scholarly journals In vivo antidiarrheal study of ethanolic extracts of Mikania cordata and Litsea monopetala leaves

2015 ◽  
Vol 10 (3) ◽  
pp. 562 ◽  
Author(s):  
Fatema Nasrin ◽  
Md. Lukman Hakim
Keyword(s):  
Body Weight ◽  
Castor Oil ◽  
Leaf Extract ◽  
Positive Control ◽  
Control Group ◽  
P Value ◽  
Leaf Extracts ◽  
Ethanolic Extracts ◽  
Antidiarrheal Activity

<p class="Abstract">In this study the antidiarrheal activity of ethanolic extracts of the leaves of <em>Mikania cordata</em> and <em>Litsea monopetala</em> was evaluated. Diarrhea was induced in mice by oral administration of castor oil (0.5 mL) 30 min after the administration of the extracts. During a 4 hour study the number of diarrheal feces and percentage inhibition of the extracts (200 and 400 mg/kg body weight) was determined. Loperamide (3 mg/kg body weight) served as standard and belonged to the positive control group. The extracts exhibited potent antidiarrheal activity as well as achieved statistically significant p value (p&lt;0.01 and p&lt;0.05) compared to control group. Among the extracts the highest percentage inhibition of defecation (60%) was recorded for leaf extract (400 mg/kg body weight) of <em>L. monopetala</em>. So, the study corroborates the significant antidiarrheal activity of <em>M. cordata</em> and <em>L. monopetala</em> leaf extracts and raises the demand of further sophisticated investigation.</p><p> </p>

scholarly journals Impact of flaxseed intake upon metabolic syndrome indicators in female Wistar rats

2012 ◽  
Vol 27 (8) ◽  
pp. 537-543 ◽  
Author(s):  
Lívia Hipólito Cardozo Brant ◽  
Ludmila Ferreira Medeiros de França Cardozo ◽  
Luís Guillermo Coca Velarde ◽  
Gilson Teles Boaventura
Keyword(s):  
Metabolic Syndrome ◽  
Body Weight ◽  
Body Weight Gain ◽  
Control Group ◽  
Lactation Period ◽  
Pregnant Rats ◽  
Beneficial Effects ◽  
Cholesterol Levels ◽  
Female Wistar Rats ◽  
Glucose Profiles

PURPOSE: To evaluate whether the prolonged consumption of flaxseed minimize the factors that trigger MS in healthy rats. METHODS: Pregnant rats were divided immediately after delivery into two groups during the lactation period, a control group (CG) receiving casein-based diet with 17% of protein, and a Flaxseed group (FG) with casein-based diet plus 25% of flaxseed. At weaning, 12 offspring of each group continued to receive the same feed but with 10% of protein up to 200 days old. RESULTS: FG showed a significant reduction in body weight (p=0.001), total cholesterol levels (p<0.0001), triglycerides (p=0.0001), and glucose (p=0.001). CONCLUSION: The flaxseed alters the indicators related to development of metabolic syndrome, because it has beneficial effects on lipids and glucose profiles and prevents the excess of body weight gain.

scholarly journals Effect ofLactobacillus reuterion intestinal microflora and immune parameters: involvement of sex differences

2018 ◽  
Author(s):  
Jiayi He ◽  
Lingyi Wu ◽  
Zhen Wu ◽  
Daodong Pan ◽  
Yuxing Guo ◽  
...  
Keyword(s):  
Relative Abundance ◽  
Dose Group ◽  
Low Dose ◽  
Probiotic Strain ◽  
Fecal Microbiota ◽  
Shannon Index ◽  
Control Group ◽  
Immune Parameters

AbstractProbiotic candidateL. reuteriwas screened out forin vivoexperiments based on a relatively higher gastrointestinal tolerance and moderate adhesiveness. As results shown inin-vivoexperiments, a significantly higher level of IL-12 at low-dose group was found both in females and males. Higher levels of T-lymphocytes were also observed in females compared to control group, however, males displayed a reduction expcept for CD8-positive cells in ileum. In comparison to the control group, the relative abundance of phylotypes in the phylumBacteroidetes(genus ofBacteroides,Prevotella) andFirmicutes(genus ofClostridiumIV) exihibited a reserve shift between sexes afterL. reuteriintervened. Meanwhile, the relative abundance of several taxa (Acetobacteroides,Lactobcaillus,bacillus) also differed markedly in sexes at low-dose group, together with microbiota diversity, as indicated by Shannon index.ImportanceSexual dimorphism has triggered researchers’ attention. However, the relationship between immune parameters and gut microbiota caused byLactobacillusat different dosage are not fully elucidated. In present research, the possible probiotic role ofL. reuteriDMSZ 8533 on immunomodulation and effect on fecal microbiota composition were investigated. Our findings demonstrate the importance of L. reuteri DMSZ 8533 as a potential probiotic strain with an immunomodulatory effect, which also alters the microflora composition depending on the sex of the host.

scholarly journals Mineralocorticoid receptor signaling is implicated in carfilzomib-induced increase in blood pressure

2021 ◽  
Vol 42 (Supplement_1) ◽  
Author(s):  
P Efentakis ◽  
S Lamprou ◽  
M Makridakis ◽  
I Barla ◽  
P.-E Nikolaou ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Mineralocorticoid Receptor ◽  
Antineoplastic Agent ◽  
Kidney Injury ◽  
Juxtaglomerular Apparatus ◽  
Histological Evaluation ◽  
Control Group ◽  
Molecular Signaling ◽  
Funding Sources

Abstract Introduction Carfilzomib (Cfz), an irreversible proteasome inhibitor, is a first line antineoplastic agent indicated for relapsed/refractory multiple myeloma, with its clinical use being hampered by cardiovascular adverse effects. Hypertension, is the most common cardiovascular side effect of Cfz, remaining of unknown pathogenicity. Purpose Considering that management of Cfz-related hypertension remains an unmet clinical need and that renal function plays a pivotal role in blood pressure regulation we sought to investigate the renal contribution in Cfz-induced hypertension. Methods We have previously established a translational model of Cfz-induced cardiomyopathy, based on clinically applicable dose regimens and we have concluded that two and four dose protocols successfully resemble the clinical observations in vivo. Herein, sixty C57Bl/6 male mice (12–14 weeks old) were randomized to: 1. Two doses Protocol: i. Control (N/S 0.9%), ii. Cfz (8mg/kg) for two consecutive days; and 2. Four doses Protocol: i. Control (N/S 0.9%), ii. Cfz (8mg/kg) for seven days intraperitoneally. Systolic (SBP) and diastolic blood pressure (DBP) were measured by tail cuffs; the latter protocol was repeated and urine collection was performed via metabolic cages studies. Renal samples were collected for histological, proteomic, metabolomic and molecular signaling analyses. Finally, eplerenone, a mineralocorticoid receptor (MR) blocker, was orally co-administered with Cfz to the mice daily (165 mg/kg) in the four doses protocol. Results Cfz increased SBP only in the four doses protocol (78.50±2.05 vs 68.20±0.73 in the Control group, **P&lt;0.01). Histological evaluation of the kidneys revealed a juxtaglomerular apparatus hyperplasia (JAH) in the same dose regimen. Proteomic analysis presented that metabolic and transport of small molecules pathways were differentially regulated in the Cfz treated murine kidneys. Metabolomic analysis revealed an increase in urea cycle metabolites (L-Alanine, L-Glutamine, glutamate, aspartate) and taurine content in the kidneys. Additionally, mice presented decreased diuresis without any differences in other metabolic parameters. In parallel an upregulation of β-ENaC expression and activation of MR/SGK-1 signaling in the kidneys was observed, indicating that Cfz activates MR signaling. Co-administration of eplerenone and Cfz, restored diuresis, decreased SBP and inhibited MR/SGK-1 signaling in the kidneys. Conclusions Activation of MR signaling by Cfz in the kidneys orchestrates renal water/salt retention and drives an increase in blood pressure in vivo. Histological and metabolomic analyses present that Cfz induces an acute kidney injury and a tonicity increase. Eplerenone reversed Cfz-induced blood pressure increase and restored diuresis by inhibiting MR/SGK-1 signaling. Therefore, MR blockade emerges as a potent therapeutic approach against Cfz-related cardiovascular adverse events. FUNDunding Acknowledgement Type of funding sources: None.

scholarly journals Effect of Jati Belanda Leaves Extract on Myeloperoxidase Level in Wistar Rat's Lung Induced Contusion Pulmonum

2019 ◽  
Vol 5 (3) ◽  
pp. 116-120
Author(s):  
Nia Savitri Tamzil ◽  
Evi Lusiana ◽  
Desi Oktariana
Keyword(s):  
Leaf Extract ◽  
Positive Control ◽  
Lung Damage ◽  
Control Group ◽  
Alveolar Cells ◽  
Pulmonary Tissue ◽  
Control Group Design ◽  
White Rats ◽  
Guazuma Ulmifolia

Pulmonary contusions are injuries to the lung parenchyma that often result from blunt trauma to the chest wall. This injury will activate the inflammatory response which can produce the effects of oxidative stress so that eventually lung damage occurs. Several studies have identified the effects of Jati Belanda leaves extracts related to the inflammatory process and their effects as antioxidants. This research is an in vivo experimental study with a prepost-test with control group design approach that aims to determine the effectiveness of the extracts of Jati Belanda (Guazuma ulmifolia) in its protection against pulmonary alveolar cells by pretreatment pulmonary contusions. The subjects of this study were white rats (Rattus norvegicus) Wistar strain which were divided into 5 groups namely positive control, negative control, Dutch teak leaf extract 125 mg / kgBB, 250 mg / kgBB and 500 mg / kgBW. Rats were induced by dropping a weight of 400 grams as high as 50 cm. The results of the study of Jati Belanda Leaf Extract (EDJB) all doses and positive control can significantly reduce levels of myeloperoxidase expression (p &lt;0.05). Therefore, it can be concluded that the extracts of Jati Belanda leaves (Guazuma ulmifolia) are all effective doses in reducing the expression of myeloperoxidase in pulmonary tissue of Wistar rats induced by pulmonary contusions.

Salidroside Mitigates Airway Inflammation in Asthmatic Mice via the AMPK/Akt/GSK3β Signaling Pathway

2021 ◽  
pp. 1-11
Author(s):  
Xue Luan ◽  
Chunai Cui ◽  
Jingzhi Jiang ◽  
Chongyang Wang ◽  
Li Li ◽  
...  
Keyword(s):  
Airway Inflammation ◽  
Dose Group ◽  
Bronchial Hyperresponsiveness ◽  
Lavage Fluid ◽  
Inflammatory Factors ◽  
Control Group ◽  
High Dose ◽  
Inflammatory Infiltration ◽  
Ifn Γ

<b><i>Introduction:</i></b> This study aimed to explore the effects and mechanisms of salidroside (SAL) in airway inflammation in asthmatic mice. <b><i>Methods:</i></b> Mice were sensitized with ovalbumin (OVA) to establish an asthma model. They were divided into the control group, OVA group, SAL low-dose group (SAL-L), SAL high-dose group (SAL-H), and dexamethasone (DXM) group. The airway reactivity of the mice was measured, and the total cells, neutrophils, eosinophils, and lymphocytes were counted, respectively. The levels of IL-4, IL-5, IL-13, and IFN-γ in bronchoalveolar lavage fluid (BALF) were detected by ELISA. Immunohistochemistry was used to detect the expression levels of p-AMPK, p-Akt, and p-GSK3β. Western blot was used to detect cytokine levels in lung tissue and p-AMPK, p-Akt, and p-GSK3β levels in LPS-induced 16HBE cells. <b><i>Results:</i></b> The airway hyperresponsiveness of asthmatic mice in the SAL-H group decreased (<i>p</i> &#x3c; 0.05), and the total number of cells, neutrophils, eosinophils, and lymphocytes decreased significantly (<i>p</i> &#x3c; 0.05). In addition, the airways of mice showed airway inflammatory infiltration and goblet cell proliferation, and the corresponding cellular inflammatory factors IL-4, IL-5, and IL-13 were significantly decreased. However, the expression of IFN-γ in BALF and lung tissues was increased (<i>p</i> &#x3c; 0.05). Moreover, after the mice were treated with SAL, the phosphorylation level of AMPK was significantly increased, which further reduced the phosphorylation levels of Akt and GSK3β (<i>p</i> &#x3c; 0.05). Both SAL and AMPK inhibitors exerted effects on LPS-induced 16HBE cells, consistent with in vivo results. <b><i>Conclusion:</i></b> SAL can inhibit bronchial hyperresponsiveness and reduce tracheal inflammation by increasing AMPK phosphorylation and inhibiting Akt and GSK3β signaling pathways.

Effect of High or Low Dose Phenoxybenzamine on Per-Operative Hemodynamics in Pheochromocytoma

2020 ◽  
Author(s):  
Randi Ugleholdt ◽  
Åse Krogh Rasmussen ◽  
Pernille Agnete Heldager Haderslev ◽  
Bjarne Kromann-Andersen ◽  
Claus Larsen Feltoft
Keyword(s):  
Blood Pressure ◽  
Dose Regimen ◽  
Laparoscopic Adrenalectomy ◽  
Dose Group ◽  
Low Dose ◽  
High Dose Group ◽  
Control Group ◽  
High Dose ◽  
Intravenous Fluids ◽  
Preoperative Treatment

Abstract Background. Alpha-receptor blockade is the mainstay in preoperative treatment of patients with pheochromocytoma and paraganglioma (PPGL). However, evidence regarding optimal dosage regimen is lacking. This study compares the per- and postoperative hemodynamics in patients pre-treated with a high or low dose of phenoxybenzamine. Methods. 30 consecutive patients with PPGL undergoing laparoscopic adrenalectomy were identified retrospectively. All were pretreated with phenoxybenzamine but at two separate endocrine departments aiming at different blood pressure target. End-dosage of phenoxybenzamine differed significantly between departments with 14 patients receiving a high dose regimen and 16 a low dose regimen. As a control group, we included 42 patients undergoing laparoscopic adrenalectomy for other reasons. Primary purpose was to compare per- and postoperative hemodynamics in the high and low dose groups. Secondly, to compare these endpoints to the control group. Results. Baseline characteristics did not differ between the phenoxybenzamine treated groups. The high dose group had less intra-operative systolic and diastolic blood pressure fluctuation (p = 0.03) and less periods with heart rate above 100 bpm (p = 0.04) as compared to the low dose group. Use of intravenous fluids were similar between the two groups. However, postoperatively, more intravenous fluids were administered in the high dose group. Overall, the control group was more hemodynamic stable as compared to either group treated for PPGL. Conclusions. High dose phenoxybenzamine improves per-operative hemodynamic stability but causes a higher postoperative requirement for intravenous fluids. Overall, PPGL surgery is related to greater hemodynamic instability compared to adrenalectomy for other reasons.

scholarly journals Endogenous Estrogen-Mediated Heme Oxygenase Regulation in Experimental Menopause

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Anikó Pósa ◽  
Renáta Szabó ◽  
Anett Csonka ◽  
Médea Veszelka ◽  
Anikó Magyariné Berkó ◽  
...  
Keyword(s):  
Left Ventricle ◽  
Heme Oxygenase ◽  
Protoporphyrin Ix ◽  
Control Group ◽  
St Segment ◽  
Female Wistar Rats ◽  
Endogenous Estrogen ◽  
Estrogen Depletion ◽  
Cardiac Left Ventricle

Estrogen deficiency is one of the main causes of age-associated diseases in the cardiovascular system. Female Wistar rats were divided into four experimental groups: pharmacologically ovariectomized, surgically ovariectomized, and 24-month-old intact aging animals were compared with a control group. The activity and expression of heme oxygenases (HO) in the cardiac left ventricle, the concentrations of cardiac interleukin-6 (IL-6) and tumor necrosis factor-α(TNF-α), the myeloperoxidase (MPO) activity in the cardiac left ventricle, and the effects of heme oxygenase blockade (by 24-hour and 1-hour pretreatment with tin-protoporphyrin IX, SnPP) on the epinephrine and phentolamine-induced electrocardiogram ST segment changesin vivowere investigated. The cardiac HO activity and the expression of HO-1 and HO-2 were significantly decreased in the aged rats and after ovariectomy. Estrogen depletion was accompanied by significant increases in the expression of IL-6 and TNF-α. The aged and ovariectomized animals exhibited a significantly elevated MPO activity and a significant ST segment depression. After pretreatment with SnPP augmented ST segment changes were determined. These findings demonstrate that the sensitivity to cardiac ischemia in estrogen depletion models is associated with suppression of the activity and expression of the HO system and increases in the secretion of proinflammatory cytokines and biomarkers.

scholarly journals Altered vascular contractility in adult female rats with hypertension programmed by prenatal glucocorticoid exposure

2006 ◽  
Vol 188 (3) ◽  
pp. 435-442 ◽  
Author(s):  
P W F Hadoke ◽  
R S Lindsay ◽  
J R Seckl ◽  
B R Walker ◽  
C J Kenyon
Keyword(s):  
Blood Pressure ◽  
Angiotensin Ii ◽  
Adult Female ◽  
Vascular Function ◽  
Mesenteric Arteries ◽  
Female Rats ◽  
Control Group ◽  
Pregnant Rats ◽  
Vascular Contractility

Excessive exposure to glucocorticoids during gestation reduces birth weight and induces permanent hypertension in adulthood. The mechanisms underlying this programmed elevation of blood pressure have not been established. We hypothesised that prenatal glucocorticoid exposure may lead to vascular dysfunction in adulthood. Pregnant rats received dexamethasone (Dex) (100 μg/kg, s.c.) or vehicle (control) daily throughout pregnancy. Blood pressure was elevated (students t-test, unpaired; P < 0.05) in adult female offspring (aged 12–16 weeks) of Dex-treated mothers (148.0 ± 3.6 mmHg, n=10) compared with the control group (138.0 ± 2.5 mmHg, n=8). Vascular responsiveness in aortae and mesenteric arteries was differentially affected by prenatal Dex: aortae were less responsive to angiotensin II, whereas mesenteric arteries were more responsive to norepinephrine, vasopressin and potassium (mesenteric arteries respond poorly to angiotensin II in vitro). Acetylcholine-mediated, endothelium-dependent relaxation was similar in both groups. Prenatal exposure to Dex had no effect on blood pressure or aldosterone response to acute (15 min, i.v.) infusion of angiotensin II (75 ng/kg per min). In contrast, chronic (2-week, s.c.) infusion of angiotensin II (100 ng/kg per min) produced a greater elevation (P < 0.05) of blood pressure in Dex-treated rats (150.0 ± 3.6 mmHg) than in controls (135.3 ± 5.4 mmHg), and aldosterone levels were higher in Dex-treated animals. There was no angiotensin II-induced medial hypertrophy/hyperplasia in mesenteric arteries from Dex-treated rats. These results indicate that vascular function is altered in a region-specific manner in rats with glucocorticoid-programmed hypertension. Despite a striking increase in mesenteric artery contraction in Dex-treated rats, in vivo studies suggest that abnormalities of the renin-angiotensin-aldosterone system, rather than enhanced vascular contractility, may be responsible for the elevation of blood pressure in these animals.

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