scholarly journals Acute and Sub-Acute Toxicity Evaluation of the Methanolic Extract of Alstonia scholaris Stem Bark

2016 ◽  
Vol 4 (1) ◽  
pp. 4 ◽  
Author(s):  
Idris Bello ◽  
Abdulmenem Bakkouri ◽  
Yasser Tabana ◽  
Bassel Al-Hindi ◽  
Majed Al-Mansoub ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Methanolic Extract ◽  
Stem Bark ◽  
Toxicity Evaluation ◽  
Alstonia Scholaris

scholarly journals The Sub Acute Toxicity Evaluation of <i>Stereospermum kunthianum</i> Aqueous Methanolic Stem Bark Extract

2021 ◽  
Vol 09 (12) ◽  
pp. 71-86
Author(s):  
Maxwell Osaronowen Egua ◽  
Ode Julius Okwoche ◽  
Florence Chimezie Nwinyi ◽  
Onakpa Michael Monday ◽  
Akande Motunrayo Ganiyat ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Stem Bark ◽  
Bark Extract ◽  
Toxicity Evaluation ◽  
Stem Bark Extract

scholarly journals Evaluation of Andira inermis stem bark extract for hypoglycaemic and antioxidant effects’

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Maxwell Osaronowen Egua ◽  
Florence Chimezie Nwinyi ◽  
Ode Julius Okwoche ◽  
Onakpa Micheal Monday ◽  
Akande Motunrayo Ganiyat ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Blood Glucose ◽  
Acute Toxicity ◽  
Methanolic Extract ◽  
Stem Bark ◽  
Bark Extract ◽  
Albino Rats ◽  
Stem Bark Extract ◽  
In Vitro Antioxidant Activity

Abstract Background The aqueous methanolic extract of Andira inermis(A. inermis) stem bark was screened for phytochemical constituents, antioxidant activity, acute oral toxicity, and preliminary prophylactic normoglycaemic test and effect on Oral Glucose Tolerance in albino rats. Methods Andira inermis was double macerated and extracted with 80% methanol. Phytochemical analysis and acute toxicity were performed using standard methods. The extract was screened for in vitro antioxidant activity using Ferric Reducing/Antioxidant Power (FRAP) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging spectrophotometric assays. Prophylactic control of glucose was evaluated in normoglycaemic and glucose-challenged albino rats. Graded test doses (100–400 mg/kg body weight) of the extract were used in the investigation. The effects observed were compared with that of glibenclamide (0.2 mg/kg) and distilled water control groups. Results The stem bark extract of A. inermis was found to contain saponins, terpenes, tannins, steroids, flavanoids, anthraquinones, carbohydrates and alkaloids. The extract was found to have a significant in vitro antioxidant activity in both methods. The oral acute toxicity study showed the extract had LD50 greater than 5000 mg/kg. The extract significantly (p ≤ 0.05) reduced blood glucose levels in normoglycaemic animal model (the control group seen to have − 5.6(− 8.7%) poor glucose handling; and the glibenclamide& extract treatment group (100 mg/kg) to positively reduce blood glucose 14.8(26.8%) & 16.4(25.9%) respectively). The glucose challenged test, from the 1st hour, showed − 57.4(− 89.4%),-26.8(− 33.8%),-23.8(− 26.3%),-12.8(− 13.9%) and − 9.8(− 10.4%) for the vehicle control, glibenclamide (positive control), and the 100, 200 & 400 mg/kg extract treatment groups respectively. The extract showed mild hypoglycemic effect in the results recorded, up to the 4th hour. Conclusion The results of this study elucidated that the aqueous methanolic extract of Andira inermis stem bark possessed potent antioxidant phyto-constituents with potential hypoglycaemic effects that could be explored for therapeutic use worldwide following isolation and characterization of the bioactive principles. And the results also authenticate the folklore use of the plant.

Acute and sub-acute toxicity of the methanolic extract of Pteleopsis hylodendron stem bark

2011 ◽  
Vol 137 (1) ◽  
pp. 70-76 ◽  
Author(s):  
H. Magnifouet Nana ◽  
R.A. Ngono Ngane ◽  
J.R. Kuiate ◽  
L.M. Koanga Mogtomo ◽  
J.D. Tamokou ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Methanolic Extract ◽  
Stem Bark

Acute and sub-acute toxicity methanolic extract from Brickellia cavanillesii in mice

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
GM Avila-Villarreal ◽  
DE Giles-Rivas ◽  
B Aguilar-Guadarrama ◽  
P Castillo-España ◽  
S Estrada-Soto
Keyword(s):  
Acute Toxicity ◽  
Methanolic Extract

PHARMACOGNOSTIC, ANTIOXIDANT AND ACUTE TOXICITY STUDY OF Ficus sycomorus (Linn) (Moraceae) ROOT AND STEM BARK

2020 ◽  
Vol 4 (2) ◽  
pp. 605-614
Author(s):  
Murtala M. Namadina ◽  
H. Haruna ◽  
U. Sanusi
Keyword(s):  
Acute Toxicity ◽  
Radical Scavenging ◽  
Stem Bark ◽  
The Body ◽  
Toxicity Study ◽  
Bark Extract ◽  
Root Extract ◽  
Acute Toxicity Study ◽  
Radical Scavenging Ability ◽  
Phytochemical Components

Most of biochemical reactions in the body generates Reactive Oxygen Species (ROS), which are involved in the pathogenesis of oxidative stress-related disorders like diabetes, nephrotoxicity, cancer, cardiovascular disorders, inflammation and neurological disorders when they attack biochemical molecules like proteins, lipids and nucleic acid. Antioxidants are used to protect the cells or tissues against potential attack by ROS. Most medicinal plants possess a rich source of antioxidants such as flavonoids, phenols, tannins, alkaloids among others. These phytochemicals are currently pursued as an alternative and complimentary drug. In this study, phytochemical components, antioxidant and acute toxicity study of the methanol extract of stem bark and root of F. sycomorus were carried out using standard methods. Findings from this study revealed the presence of some diagnostic microscopical features such as calcium oxalate, starch, gum/mucilage, lignin, Aleurone grain, suberized/Cuticular cell wall and inulin but calcium carbonate was absent in stem bark but present in the powdered root. Quantitative physical constants include moisture contents (6.40% and 7.82%), ash value (7.20% and 9.30 %) in stem bark and root respectively. Carbohydrates, alkaloid, flavonoids, saponins, tannins, glycoside, steroid, triterpenes and phenols were present in all the extracts. They were found to exhibit potent 1,1,-diphenyl 2-picryl hydrazyl (DPPH) free scavenging activity. The DPPH radical scavenging ability of the extracts showed the following trend Ascorbic acid < stem bark extract˃ root extract. The LD50 of the methanolic stem bark and root extracts were found to be greater than 5000 mg /kg and is considered safe for use. Nonetheless, further

Cytoprotective and antisecretory properties of methanolic extract of Distemonanthus benthamianus (Caesalpiniaceae) stem bark on acute gastric ulcer in rats

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Vanessa Mba Matah Marthe ◽  
Gilbert Ateufack ◽  
Marius Mbiantcha ◽  
William Yousseu Nana ◽  
Albert Donatien Atsamo ◽  
...  
Keyword(s):  
Methanolic Extract ◽  
Gastric Lesion ◽  
Stem Bark ◽  
Male Rats ◽  
Gastric Ulcers ◽  
Gastric Lesions ◽  
Mucus Production ◽  
Antisecretory Activity ◽  
Antisecretory Effect ◽  
Pylorus Ligation

AbstractObjectivesIn African traditional medicine, Distemonanthus benthamianus (Caesalpiniaceae) is used to treat many diseases including gastric ulcers. We evaluated in this study, the cytoprotective and antisecretory properties of the methanolic extract of the stem bark of this plant using different technics of gastric lesion induction.MethodsCytoprotective and antisecretory activity of the methanolic extract of D. benthamianus stem bark was evolved through six methods of gastric lesion induction in experimental Wistar male rats (150–200 g): (1) gastric lesions induced by HCl/ethanol, (2) gastric lesions induced by Indomethacin- HCl/ethanol, (3) gastric lesion induced by Indomethacin, (4) gastric lesions induced by Pylorus ligation, (5) gastric lesions induced by histamine-Pylorus ligation, (6) gastric lesions induced by carbachol-Pylorus ligation. Mucus and gastric mucosal ulceration were evaluated. pH, gastric volume, and acidity were quantified in all pylorus ligation induction technics. Nitric oxide (NO) level was determined in indomethacin induced gastric ulcers.ResultsAt different doses (125, 250 and 500 mg/kg), extract reduced significantly the ulcer index. In all models used, that is 100.00% with HCl/ethanol; 100.00% with HCl/ethanol/indomethacin; 95.70% with Indomethacin; 74.79% with pylorus ligation, 95.94% histamine-Pylorus ligation, 99.54% carbachol-Pylorus ligation at the highest dose of 500 mg/kg. The lesion formation reduces in all the methods used followed by a significant increase of mucus production. The pylorus ligation technic revealed that the extract has an antisecretory activity.ConclusionsThe methanolic extract of D. benthamianus stem bark has both cytoprotective and antisecretory effects. This extract exerts its antisecretory effect trough cholinergic and histaminergic pathways.

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