scholarly journals Spasmolytic effect of Lonicera japonica extracts on isolated uterus smooth muscle contractions

2021 ◽  
Vol 10 (3) ◽  
pp. 351-358
Author(s):  
Hassan Sadraei ◽  
Mona Khakboo ◽  
Gholamreza Asghari
Keyword(s):  
Ethyl Acetate ◽  
Essential Oils ◽  
Flowering Plant ◽  
Lonicera Japonica ◽  
Organ Bath ◽  
Dependent Manner ◽  
Antispasmodic Activity ◽  
Solvent Fractionation ◽  
Hydroalcoholic Extract ◽  
Flower Extract

Introduction: Honeysuckle (Lonicera japonica) is an ornamental flowering plant with numerous traditional medicinal uses. It has been claimed to have anti-spasmodic activities, but only limited studies have been done to support this. The objective of this research was to investigate anti-spasmodic effect of L. japonica flower extract on uterus contractions. Methods: Hydroalcoholic extract was prepared using the maceration technique. In addition, chloroform and ethyl acetate fractions were prepared using a solvent in solvent fractionation technique. Essential oils were collected using the hydro-distillation technique. Rat isolated uterus was suspended in an organ bath and contracted with oxytocin, acetylcholine (ACh), KCl, or application of electrical field stimulation (EFS). The relaxant effects of the extract, its fractions, and nifedipine were examined on uterine contrition induced by the above-mentioned stimuli. Results: Nifedipine in a concentration-dependent manner inhibited uterine contraction induced by oxytocin, KCl, ACh, and EFS. L. japonica flower extract also exhibited an inhibitory effect on the isolated rat uterus. Comparison of the hydroalcoholic extract with its chloroform and ethyl acetate fractions showed that the chloroform fraction was the most potent and the ethyl acetate the weakest part of the plant with antispasmodic activity. The relaxant effect of essential oil had close similarities to that of chloroform extract. Conclusion: Lipophilic compounds isolated by the chloroform partition of crude hydroalcoholic extract of L. japonica flower exhibited the most antispasmodic activity. Ethyl acetate partition of the same extract exhibited the least activity. Therefore, it can be concluded that the spasmolytic constituents of L. japonica flower reside in chloroform partitioning. The nonpolar essential oils may also have a contribution.

scholarly journals Bronchodilator effect of apigenin and luteolin, two components of Dracocephalum kotschyi on isolated rabbit trachea

2019 ◽  
Vol 8 (4) ◽  
pp. 281-286 ◽  
Author(s):  
Hassan Sadraei ◽  
Seyed Mostapha Ghanadian ◽  
Gholamreza Asghari ◽  
Aminreza Gavahian
Keyword(s):  
Smooth Muscle ◽  
Tracheal Ring ◽  
Tracheal Smooth Muscle ◽  
Organ Bath ◽  
Dependent Manner ◽  
Concentration Dependent Manner ◽  
Standard Drug ◽  
Solvent Fractionation ◽  
Dracocephalum Kotschyi

Introduction: Dracocephalum kotschyi is a native Iranian plant with antispasmodic activities on smooth muscles such as ileum and uterus. However, so far antispasmodic effect of D. kotschyi on tracheal smooth muscle has not been reported. Therefore, the objective of this research was to investigate antispasmodic activity of D. kotschyi extract and two of its components luteolin and apigenin on rabbit tracheal contraction in vitro. Methods: Rabbits were euthanized by carbon dioxide and the trachea was dissected and immersed in a Tyrode’s solution. Tracheal rings were prepared and mounted vertically in an organ bath at 37°C and gassed continuously with O2. The tracheal ring preparations were contracted with acetylcholine (ACh) and KCl. The isotonic tension was recorded before and after addition of aminophylline, apigenin, luteolin or flavonoids rich extract of D. kotschyi. Flavonoids rich extract were prepared from D. kotschyi using solvent-solvent fractionation technique. Results: Standard drug aminophylline, prevented tracheal ring preparation contracted with ACh. Cumulative addition of aminophylline also attenuated tonic contraction induced by KCl on tracheal smooth muscle. D. kotschyi extract at concentration ranges of 32-512 μg/mL in a concentration dependent manner inhibited KCl and ACh induced tracheal contraction. Apigenin and luteolin (range 16–512 μg/mL) relaxed KCl and ACh-induced contraction of tracheal smooth muscle in vitro in a concentration-dependent manner. Conclusion: This study demonstrated that D. kotschyi extract is a relaxant of tracheal smooth muscle. The relaxant effect of D. kotschyi extract could be due to its flavonoids component such as apigenin and luteolin.

scholarly journals ANTIOXIDANT, ANTIBACTERIAL AND ANTIBIOFILM POTENTIALS OF ANISE (Pimpinella anisum) SEEDS EXTRACTED ESSENTIAL OILS

2021 ◽  
Vol 52 (2) ◽  
pp. 348-358
Author(s):  
SH. A. Al- wendawi ◽  
L. A. Gharb ◽  
R. S. Al ghrery
Keyword(s):  
Essential Oils ◽  
Folk Medicine ◽  
Flowering Plant ◽  
Antibiofilm Activity ◽  
Chemical Compositions ◽  
Dependent Manner ◽  
Arab Region ◽  
Mass Spectral ◽  
Pimpinella Anisum ◽  
Flavoring Agent

Anise (Pimpinella anisum) is an annual herbaceous flowering plant, its widely used as spices, flavoring agent and fragrance. Anise seeds and its essential oils (EOs) has been used widely in the recipes of folk medicine in the Arab region, including Iraq. Therefore, the goal of this work was to extract and define the chemical compositions of aniseeds EOs, and study its antioxidant, antibacterial, and antibiofilm potentials. Aniseed EOs were extracted by hydro-distillation technique using Clevenger apparatus. Twenty-five distinct compounds have been recognized by Gas chromatographic–Mass spectral (GC-Mas) analysis, the major constituents were anisole (87.99%) followed by estragole (3.01%), and all other components were presented in less than 2%. The aniseed EOs showed potent antioxidant activity for scavenging of 2,2 diphenyl - 1-picrylhydrazyl (DPPH) in concentrations-dependent manner, the highest antioxidant (84.9±0.267%) was recorded at 10000 ppm. Antibacterial activity regards to minimum inhibitory concentration (MIC) against burn wounds isolated Pseudomonas aeruginosa were of the rang 4000-7000ppm. Aniseed EOs revealed excellent antibiofilm activity against P. aeruginosa biofilms formation with reduction percentage ranged from 26 - 86.41% in co-treatment assay, while the inhibition potentials for pre-developed biofilm decreased significantly (P<0.05) by 100% for the majority of P. aeruginosa candidate isolates.

Antioxidant and Anti-inflammatory Activities of Organic and Aqueous Extracts of Northeast Algerian Marrubium vulgare

2018 ◽  
Vol 16 (S1) ◽  
pp. S119-S129
Author(s):  
I. Namoune ◽  
B. Khettal ◽  
A.M. Assaf ◽  
S. Elhayek ◽  
L. Arrar
Keyword(s):  
Ethyl Acetate ◽  
Methanolic Extract ◽  
Ethyl Acetate Extract ◽  
Interleukin 1 ◽  
Total Phenolic ◽  
Dependent Manner ◽  
Aqueous Extracts ◽  
Traditional Use ◽  
Marrubium Vulgare ◽  
Anti Inflammatory

Marrubium vulgare (Lamiaceae) is frequently used in traditional medicine to treat many illnesses from ancient times. Its beneficial effects include antibacterial, antioedematogenic, and analgesic activities. This study was designed to evaluate the antioxidant and anti-inflammatory activities of organic and aqueous extracts of the leaves, the flowers, the stems, and the roots of Marrubium vulgare. The total phenolic and flavonoid contents as well as the antioxidant and the anti-inflammatory effects of methanol, chloroform, ethyl acetate, and aqueous extracts have been investigated by using different in-vitro methods. It was found that the ethyl acetate extract from Marrubium vulgare stems had the highest total phenolic content, while the ethyl acetate extract from the leaves yielded a high concentration of flavonoids. The ethyl acetate extract from the stems exhibited the highest activity in scavenging of 2,2-diphenyl- 1-picrylhydrazyl (DPPH), as well as in protecting erythrocytes. The leaves aqueous extract exhibited the highest ferrous chelating activity and its methanolic extract was found to be the strongest inhibitor of lipid peroxidation in β-carotene bleaching assay. The leaves chloroform extracts as well as the flowers methanol, chloroform, and ethyl acetate extracts were found to decrease the pro-inflammatory tumor necrosis factor alpha (TNF-α) cytokine levels in a dose-dependent manner. On the other hand, the flowers methanolic extract and the leaves methanol, ethyl acetate, and aqueous extracts decreased the interleukin-1 beta (IL- 1β) release. It was also found that the methanol extract from the flowers and the chloroform extract from the stems of Marrubium vulgare inhibited interleukin-8 (IL-8) release. This study provides a scientific basis for the traditional use of Marrubium vulgare as an anti-inflammatory agent and for the plant to be considered as an important resource of natural antioxidants.

Phytochemical Investigation and Antimutagenic Potential of Ethanolic Extracts of Emblica officinalis, Terminalia chebula and Terminalia bellirica

2020 ◽  
Vol 10 (4) ◽  
pp. 488-494 ◽  
Author(s):  
Venugopal Singamaneni ◽  
Sudheer Kumar Dokuparthi ◽  
Nilanjana Banerjee ◽  
Ashish Kumar ◽  
Tulika Chakrabarti
Keyword(s):  
Ethyl Acetate ◽  
Gallic Acid ◽  
Ellagic Acid ◽  
Antimutagenic Activity ◽  
Dependent Manner ◽  
Terminalia Chebula ◽  
Emblica Officinalis ◽  
Dried Fruits ◽  
Terminalia Bellerica ◽  
The Family

Background: Emblica officinalis Gaertn. which belongs to the family Euphorbiaceae, Terminalia chebula Retz. and Terminalia bellerica Roxb. belong to the family Combretaceae. These are well known medicinal plants with phytochemical reservoir of great medicinal values and possess a vast ethnomedical history. Objective: The aim of the present study is to isolation of major compounds and to evaluate antimutagenic potential of the ethanol extracts of these plants. Methods: The dried fruits of E. officinalis, T. bellirica and T. chebula were powdered and extracted with 95% ethanol. The ethyl acetate portions were chromatographed over silica gel to isolate major compounds. Antimutagenic activity was determined by Ames test using TA98 and TA100 strains of Salmonella typhimurium. Results: Two major known compounds, gallic acid and ellagic acid were isolated from the dried fruits of Emblica officinalis, Terminalia chebula and T. bellirica. All the three extracts counteracted the mutagenicity induced by different genotoxic compounds in a dose dependent manner. Conclusion: This study showed that ethyl acetate portion of three extracts contain two major compounds, gallic acid and ellagic acid which might be responsible for potent antimutagenic activity of these extracts.

scholarly journals Exogenous glucagon-like peptide 1 reduces contractions in human colon circular muscle

2014 ◽  
Vol 221 (1) ◽  
pp. 29-37 ◽  
Author(s):  
Antonella Amato ◽  
Sara Baldassano ◽  
Rosa Liotta ◽  
Rosa Serio ◽  
Flavia Mulè
Keyword(s):  
Colonic Motility ◽  
Circular Muscle ◽  
Human Colon ◽  
Inhibitory Effect ◽  
Mechanical Activity ◽  
Organ Bath ◽  
Dependent Manner ◽  
Double Labeling ◽  
Glucagon Like Peptide ◽  
Glucagon Like Peptide 1

Glucagon-like peptide 1 (GLP1) is a naturally occurring peptide secreted by intestinal L-cells. Though its primary function is to serve as an incretin, GLP1 reduces gastrointestinal motility. However, only a handful of animal studies have specifically evaluated the influence of GLP1 on colonic motility. Consequently, the aims of this study were to investigate the effects induced by exogenous GLP1, to analyze the mechanism of action, and to verify the presence of GLP1 receptors (GLP1Rs) in human colon circular muscular strips. Organ bath technique, RT-PCR, western blotting, and immunofluorescence were used. In human colon, exogenous GLP1 reduced, in a concentration-dependent manner, the amplitude of the spontaneous contractions without affecting the frequency and the resting basal tone. This inhibitory effect was significantly reduced by exendin (9–39), a GLP1R antagonist, which per se significantly increased the spontaneous mechanical activity. Moreover, it was abolished by tetrodotoxin, a neural blocker, or Nω-nitro-l-arginine – a blocker of neuronal nitric oxide synthase (nNOS). The biomolecular analysis revealed a genic and protein expression of the GLP1R in the human colon. The double-labeling experiments with anti-neurofilament or anti-nNOS showed, for the first time, that immunoreactivity for the GLP1R was expressed in nitrergic neurons of the myenteric plexus. In conclusion, the results of this study suggest that GLP1R is expressed in the human colon and, once activated by exogenous GLP1, mediates an inhibitory effect on large intestine motility through NO neural release.

Comparative free radical scavenging and hypoglycemic activities of n-hexane, ethyl-acetate, and aqueous fractions of Azanza garckeana pulp

2021 ◽  
Vol 1 (2) ◽  
pp. 1-8
Author(s):  
Abubakar A. Yusuf ◽  
Toheeb D. Yissa ◽  
Abdulhakeem Rotimi Agboola ◽  
Sodiq M Balogun ◽  
Peter O. Adeboye ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Radical Scavenging ◽  
Ethyl Acetate Fraction ◽  
Diabetic Rats ◽  
Hypoglycemic Effect ◽  
Hexane Fraction ◽  
Dependent Manner ◽  
Aqueous Fraction ◽  
Dpph Scavenging ◽  
Glucose Reduction

Background: The prevalence of diabetes mellitus is increasing on a global trend. The aim of the present study is to identify the most effective antioxidants and hypoglycemic fraction of Azanza garckeana. Methods: The fractions (nhexane or ethyl-acetate or aqueous) of A. garckeana were administered to the alloxan-induced diabetic rats at doses of 100, 200, and 400 mg/kg for 15 days. Antioxidants activities were evaluated at concentrations of 62.5, 125, 250, and 500 µg/mL using the DPPH scavenging assay. Results: Results revealed that both the hexane, ethyl-acetate, and aqueous fractions exhibited hypoglycemic and antioxidants activities in a dose-dependent manner. The n-hexane fraction demonstrated highest percentage DPPH scavenging effect of 26.34±3.43, 38.44±4.35, 59.34±3.45, and 74.83±5.35 at 62.5, 125, 250, and 500 µg/mL respectively. The ethyl-acetate fraction demonstrated 19.33±2.98, 28.94±3.24, 47.34±2.90, and 57.82±4.54 respectively while the aqueous fraction exhibited the least activities of 12.45±23.45, 18.64±2.94, 27.94±3.89, and 39.43±3.89 at concentrations of 62.5, 125, 250, and 500 µg/mL respectively. In addition, the n-hexane fraction demonstrated the most significant hypoglycemic effect with the highest glucose reduction of 58.97 ±3.45 %, 63.86±5.35 %, and 66.51±4.35 %, ethyl acetate fraction demonstrated glucose reduction of 7.55±0.54%, 21.77±2.35 %, and 29.56±3.46 % while the aqueous fraction demonstrated the least hypoglycemic effect of 9.89±2.67 %, 18.09±3.45 %, and 18.87±3.24 at 100, 200 and 400 mg/kg bw respectively. Conclusion: The n-hexane fraction of Azanza garckeana extract could serve as a reservoir of bioactive agents that could be useful for the development of a new anti-diabetic agent

scholarly journals Role of α1-adrenergic receptor subtypes in contractility of the rabbit abdominal aorta in vitro

2013 ◽  
Vol 82 (3) ◽  
pp. 331-336 ◽  
Author(s):  
Jan Gnus ◽  
Albert Czerski ◽  
Stanisław Ferenc ◽  
Wojciech Zawadzki ◽  
Wojciech Witkiewicz ◽  
...  
Keyword(s):  
Smooth Muscle ◽  
Receptor Antagonist ◽  
Abdominal Aorta ◽  
Adrenergic Receptor ◽  
Receptor Subtypes ◽  
Organ Bath ◽  
Dependent Manner ◽  
Receptor Antagonists ◽  
Selective Antagonists

Investigation of the effect of α1-adrenergic receptor subtypes on the contraction of the abdominal aorta will allow for more effective treatment of hypertension by use of selective antagonists. The aim of the study was to evaluate the participation of α1-adrenergic receptor subtypes in the contractility of the aortic smooth muscle cells in rabbits. The in vitro experiments were performed in isolated tissue preparations from 30 adult female New Zealand rabbits. The abdominal aortic sections were placed in organ bath chambers and contracted with increasing doses of non-selective α1-adrenergic receptor agonist phenylephrine without pre-incubation or after incubation in α1-adrenergic receptor subtype-selective or non-selective antagonists. Separate sections were incubated with increasing concentrations of antagonists. Phenylephrine caused maximal rise in arterial smooth muscle tone to 4.75 ± 0.47 mN. The most potent in blocking phenylephrine induced contraction was 5-metylurapidil (α1A-adrenergic receptor antagonist) followed by phentolamine and prazosin (non-selective α1-adrenergic receptor antagonists); BMY 7378 (α1D-adrenergic receptor antagonist), cyclazosin and L-765.314 (α1B-adrenergic receptor antagonists) were less effective. All antagonists, except BMY 7378 elicited relaxation of non-precontracted aorta in dose dependent manner. Our results indicate that postsynaptic α1A receptors are the most potent in producing rabbit abdominal aorta contraction, while α1B and α1D subtypes are less effective.

scholarly journals Karakterisasi Fraksi Aktif Antioksidan dari Ekstrak Etanol Biji Kemangi (Ocimum Basilicum L.)

2015 ◽  
pp. 39-49
Author(s):  
Dede Sukandar ◽  
Sandra Hermanto ◽  
Eka Rizki Amelia ◽  
Chitta Putri Novianti
Keyword(s):  
Ethyl Acetate ◽  
Column Chromatography ◽  
Ethanol Extract ◽  
Ocimum Basilicum ◽  
Total Phenolic ◽  
Solvent Fractionation ◽  
Butanol Extract ◽  
Dpph Method ◽  
Ic50 Values

Characterization of antioxidant compounds from the seeds of basil (Ocimum basilicum L.) has been done. Extraction is done by maceration method using ethanol solvent, fractionation by TLC and column chromatography, antioxidants test using DPPH method, and characterization of antioxidant compound using GCMS. Ethanol extract and results of fractionation ethanol extract of basil seeds using n-hexane, ethyl acetate, n-butanol and methanol-water extracts show that n-butanol extract has the highest antioxidant activity with IC50 values ​​of 41.90 ppm. Results of column chromatography n-butanol extract using n-hexane : ethyl acetate (1:9) as mobile phase yielded 5 fractions with fraction 4 (F4 isolate) has dominant stain of active antioxidants after being sprayed DPPH reagent, it had IC50 values ​​of 39,70 ppm and total phenolic content of 0,003 mg/g. Isolate F4 suspected contains two active compounds as antioxidant which is terpenoid and phenolic compound group, namely squalene and 1,4-di-tert-buthyl-phenol identified by GCMS.DOI :http://dx.doi.org/10.15408/jkv.v0i0.3598

scholarly journals Hydroalcoholic extract of leaves of Arrabidaea brachypoda (DC.) Bureau present antispasmodic activity mediated through calcium influx blockage

2020 ◽  
Vol 41 ◽  
Author(s):  
Fabio de Souza Monteiro ◽  
Jhone Robson da Silva Costa ◽  
Lenivaldo Jorge Alves Martins ◽  
Cláudia Quintino da Rocha ◽  
Antonio Carlos Romao Borges ◽  
...  
Keyword(s):  
Calcium Influx ◽  
Antispasmodic Activity ◽  
Hydroalcoholic Extract
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