scholarly journals Acute and Subacute Toxicity Assessment of Ethyl Acetate Extracts from Aerial Parts of Clerodendrum thomsoniae Balf.f in Rodents

2021 ◽  
Vol 11 (6) ◽  
pp. 13952-13961
Keyword(s):  
Acute Toxicity ◽  
Ethyl Acetate ◽  
Human Subjects ◽  
Female Rats ◽  
Laboratory Animals ◽  
Oral Toxicity ◽  
Subacute Toxicity ◽  
Toxicity Studies ◽  
Male And Female Rats

Clerodendrum is a genus of about 500 species belongs to the family Lamiaceae. Several species of this genus have been proved for the treatment of various diseases. Clerodendrum thomsoniae Balf.f were selected in this study; according to the literature available, there is no systematic toxicity studies for this plant were described. The current study was therefore carried out to evaluate the acute and sub-acute toxicity in mice and rats. The acute oral toxicity study was performed in mice following OECD guidelines 425, and the sub-acute toxicity was performed in male and female rats following OECD guidelines 407. The results showed that mice given a single dose of up to 2000 mg/kg orally did not show any toxicity signs or mortality. In the sub-acute toxicity analysis in rats, 3 specific daily doses of 150, 300, and 600 mg/kg for 28 days did not induce any major changes to the hematological and biochemical parameters. Histopathological studies revealed normal architecture that did not indicate any morphological disturbances. In our study, no deaths or any signs of toxicity were found in acute and subacute toxicity studies after oral administration according to OECD guidelines, which concluded that ethyl acetate extract of Clerodendrum thomsoniae Balf (EACT) could use for in vivo biological activity studies in laboratory animals to explore its various medicinal activity before study in human subjects.

Acute and subacute toxicity assessment of Madhulai Manappagu (Siddha herbal syrup formulation) in animal model

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Meenakshi Sundaram Malayappan ◽  
Gayathri Natarajan ◽  
Logamanian Mockaiyathevar ◽  
Meenakumari Ramasamy
Keyword(s):  
Body Weight ◽  
Acute Toxicity ◽  
Oral Route ◽  
Toxicity Assessment ◽  
Toxicity Study ◽  
Female Rats ◽  
Albino Rats ◽  
Oral Toxicity ◽  
Gross Pathology ◽  
Toxicity Studies

Abstract Objectives Madhulai Manappagu – a well-known sastric and widely prescribed Siddha herbal syrup formulation indicated for treating Veluppu Noi (Anaemia especially Iron deficiency Anaemia) has been in day today practice in Tamil Nadu for a quite longer decades. The syrup is a herbal preparation which has a sweet pleasant odour and a palatable taste, contain the juice of pomegranate (Punica granatum L.) as the main ingredient. Though the formulation is a fruit juice, the safety profile of the syrup is not established and is being marketed without toxicological evaluation. The study is aimed at ascertaining the acute and sub-acute toxicity assessment of Madhulai Manappagu in Wistar Albino rats. Methods The acute and sub-acute (28day repeated oral) toxicity studies were performed as per the guidelines mentioned in the Organization for Economic Cooperation and Development (OECD) 423 (adopted on December 2001) and TG 407 (adopted on October 2008) with slight modifications respectively. For acute toxicity study, three female rats were randomly selected as control; three female rats were randomly selected and were administered a single dose of 5,000 mg/kg body weight per oral route. For sub-acute (28day repeated oral) toxicity studies, three doses of test drug MM of 500 mg/kg/day (low dose), 750 mg/kg/day (intermittent dose) and 1,000 mg/kg/day (high dose) were selected for administration. Both sexes of Wistar Albino rats were randomized into four groups of 10 animals each (five males, five females). Group I was kept as control group. Group II, III and IV served as low, intermittent and high doses of MM respectively. Animals were observed for mortality, morbidity, body weight changes, feed and water intake. Haematology, clinical biochemistry, electrolytes, gross pathology, relative organ weight and histopathological examination were performed. Results In the acute toxicity study, rats showed no toxicological signs on behavior, gross pathology and body weight of rats when treated with a single dose of 5,000 mg/kg body weight per oral route. In the subacute (28 days repeated oral) toxicity study, rats have showed no significant changes on behavior, gross pathology, body weight, and hematological and biochemical parameters when treated with Madhulai Manappagu in three different doses. Conclusions The toxicity studies which include both acute and 28 days repeated (subacute) oral toxicity studies, revealed no observed adverse effect level (NOAEL) of Madhulai Manappagu in animals. Thus the safety of the drug in human usage was ensured.

scholarly journals Phytochemical Identification, Acute, and Sub-Acute Oral Toxicity Studies of the Foliar Extract of Withania frutescens

Molecules ◽  
2020 ◽  
Vol 25 (19) ◽  
pp. 4528 ◽  
Author(s):  
Abdelfattah EL Moussaoui ◽  
Mohammed Bourhia ◽  
Fatima Zahra Jawhari ◽  
Hamza Mechchate ◽  
Meryem Slighoua ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Clinical Symptoms ◽  
Ethanolic Extract ◽  
Control Group ◽  
Phytochemical Analysis ◽  
Oral Toxicity ◽  
Phytochemical Composition ◽  
Subacute Toxicity ◽  
Repeated Doses

Withania frutescens (W. frutescens) is a medicinal plant widely used to treat several diseases. This work aims to study phytochemical composition as well as acute and subacute toxicity of W. frutescens hydroethanolic extract in mice. The phytochemical composition of W. frutescens extract was performed using gas chromatographic analysis. Acute toxicity was studied in vivo with oral administration of single doses 400 mg/kg, 1000 mg/kg, and 2000 mg/kg for 14 days. Subacute toxicity was studied with the administration of repeated doses of 400 mg/kg/day and 2000 mg/kg/day for 28 days. Phytochemical analysis of W. frutescens hydro-ethanolic extract confirmed the presence of interesting chemical compounds. Acute toxicity results showed no toxic symptoms in mice treated with an increasing dose up to a maximum of 2000 mg/kg. Alongside acute toxicity, subacute data showed no clinical symptoms nor biochemical or histological alteration in mice treated with an increasing dose up to a maximum of 2000 mg/kg compared to the control group (p < 0.05). This study shows no toxic effects in animals treated with W. frutescens extract, and, therefore, this plant can be considered safe in animals up to 2000 mg/kg under both acute and subacute toxicity conditions.

scholarly journals Acute and Subacute Toxicity Studies of the Ethyl Acetate Soluble Proanthocyanidins of the Immature Inflorescence of Cocos nucifera L. in Female Wistar Rats

2019 ◽  
Vol 2019 ◽  
pp. 1-12
Author(s):  
C. P. Ekanayake ◽  
M. G. Thammitiyagodage ◽  
S. Padumadasa ◽  
B. Seneviratne ◽  
C. Padumadasa ◽  
...  
Keyword(s):  
Body Weight ◽  
Acute Toxicity ◽  
Ethyl Acetate ◽  
Wistar Rats ◽  
Cocos Nucifera ◽  
Toxicity Study ◽  
Immature Inflorescence ◽  
Subacute Toxicity ◽  
Toxicity Studies ◽  
Female Wistar Rats

Ayurvedic and traditional medical practitioners of Sri Lanka use the decoction of the immature inflorescence of Cocos nucifera L. (IC) variety aurantiaca for the treatment of menorrhagia. The progestogenic effect of the ethyl acetate soluble proanthocyanidins (EASPA) of the IC in female rats at a dose of 3.5 mg/kg body weight has been reported. Acute and subacute toxicity studies of EASPA of the IC carried out using female Wistar rats according to Organization for Economic Co-operation and Development (OECD) guidelines 423 and 407, respectively, are reported herein. In the acute toxicity study, a single dose of EASPA (2000 mg/kg body weight) was orally administered to rats, which were monitored for 14 days. In the subacute toxicity study, rats were orally administered with EASPA daily for 28 days at doses of 1.75, 3.5, 7, and 14 mg/kg body weight. No rat in either the acute or subacute toxicity study exhibited mortality or clinical signs of toxicity. Further, these rats did not show any significant change in their mean body weight, food, and water intake, haematological and biochemical parameters as well as in the results of their histopathological examinations compared to those of control group rats. According to results of the acute toxicity, the LD50 of EASPA is estimated to be greater than 2000 mg/kg body weight. Considering the results of the subacute toxicity study, the oral administration of EASPA daily for 28 days was well tolerated up to the dose, 14 mg/kg by rats. These results will be useful in the development of a novel therapeutic agent from EASPA of the IC for the treatment of menorrhagia, which incapacitates a considerable proportion of women worldwide.

scholarly journals Acute and subacute toxicity assessment of an aqueous extract of Crotalaria retusa (Fabaceae) in Swiss mice and Wistar rats

2021 ◽  
Vol 11 (6) ◽  
pp. 94-100
Author(s):  
Lane Adrien GOH BI ◽  
Noel Kouame TOTO ◽  
Ouga Stanislas ZAHOUI ◽  
Yomalan KASSI ◽  
Semi Anthelme NENE Bi ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Aqueous Extract ◽  
Wistar Rat ◽  
Toxicity Assessment ◽  
Female Rats ◽  
Male And Female ◽  
Subacute Toxicity ◽  
Swiss Mice ◽  
Aerial Parts ◽  
Male And Female Rats

The present study is a contribution to the enhancement of Ivorian traditional medicine, by carrying out bio-tolerance tests of an aqueous extract of the aerial parts of Crotalaria retusa (EACr) in mice and rats according to the guidelines of the Organization for Economic Co-operation and Development (OECD) 423 and 407, respectively. The doses of 2000 and 5000 mg/kg of body weight (BW) of the extract were used for acute toxicity. For subacute toxicity which lasted 28 days, doses of 500, 1000, and 2000 mg/kg BW have been used. The administration of the single doses of 2000 and 5000 mg/kg BW of EACr did not provoke death in female mice in the acute toxicity setting. For subacute toxicity in rats (male and female), the administration of repetitive doses of 500, 1000, and 2000 mg/kg BW of EACr over a period of 28 days did not cause death in these animals. In females, these doses caused weight loss and a decrease in platelets. The extract reduced the activity of AST in both sexes of rats. The findings also showed that this extract would possess a nephroprotective property in male and female rats. Keywords: Crotalaria retusa, Acute and subacute toxicities, Wistar rat, Swiss mice

scholarly journals In vivo anti-psoriasis, anti-inflammatory activities and oral toxicity studies of aqueous extract from seeds of Ammi visnaga L.

2020 ◽  
Vol 11 (SPL4) ◽  
pp. 1025-1037
Author(s):  
Ez-zahir Abdeljaouad ◽  
Naya Abdallah ◽  
Seddik Nadia ◽  
Marnissi Farida ◽  
Belghmi Khalid ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Aqueous Extract ◽  
Control Group ◽  
Oral Toxicity ◽  
Distribution Width ◽  
Toxicity Studies ◽  
Ammi Visnaga ◽  
Significant Difference ◽  
Anti Inflammatory

Ammi visnaga L (A.V.) is used in the traditional medicine for the treatment of kidney stones, diabetes and vitiligo. An in vivo anti-psoriasis, anti-inflammatory activities and oral toxicity studies of aqueous extract from seeds of Ammi visnaga L. was investigated. In the acute toxicity, the extract was administered orally in a single dose to rats (0- 2000-5000 mg/kg) and in the sub-acute toxicity daily for 28 days (0-300-600-1000 mg/kg/day). The symptoms of toxicity and mortality have been recorded daily and during 14 days of recovery with an examination of liver, kidney, hematologic, biochemical and histological analysis at the end of treatment. The anti-inflammatory activity was evaluated by induction of oedema and the anti-psoriasis by induction of a psoriasiform-like skin phenotype by UV-B radiations. No mortality was observed after single gavages by a dose up to 5000 mg/kg and no signs of toxicity noted. Clinical and biochemical examination during 28 days of gavages at all doses showed no significant difference compared to control group, while a significant reduction in MCV (mean corpuscular volume) and P-LCR (platelet large cell ratio) (p <0.05), PDW (platelet distribution width) and MPV (multi-purpose vehicle) (p <0.01) was observed and histopathological examinations showed slight inflammation in the liver and kidneys for the higher dose. Percentage of inhibition of the oedema was near the positive control 50% for all doses tested. Treatment with A.V. extract had decreased the thickness of the skin induced by UV-B irradiation.  In conclusion, the LD50 was estimated greater than 5000 mg/kg; therefore A.V. can be classified as non-toxic but if used in the long term can induce a slight toxicity dose dependant with high anti-psoriasis and anti-inflammatory activities.

scholarly journals Pragmatic Toxicity Profiling of a Salubrious Polyherbal Combination of Tinospora Cordifolia, Withania Somnifera, and Boerrhavia Diffusa in Swiss Albino Mice

2020 ◽  
Vol 11 (3) ◽  
pp. 4240-4252
Author(s):  
Arshiya Shamim ◽  
Hefazat H Siddiqui ◽  
Tarique Mahmood ◽  
Mohd Haris Siddiqui ◽  
Paramdeep Bagga ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Withania Somnifera ◽  
Late Toxicity ◽  
Tinospora Cordifolia ◽  
Toxicity Screening ◽  
Subacute Toxicity ◽  
Toxicity Studies ◽  
Study Results ◽  
Pharmacological Potential

Acute and subacute toxicity screening of novel entrants in the stream of polyherbal formulations opens new doors towards the scientific approach of establishing them in the clinical market. Toxicity profiling asserts the humongous pharmacological potential that the natural herbs hold and establishes their safety profile. To exemplify this statement, this study further deals with acute and subacute toxicity studies of an olive oil-based polyherbal combination (PHC). This combination has been developed with the view that it proves to be clinically effective in diabetic cardiomyopathy and neuropathy. However, until now, the acute and subacute toxicity studies have been done on the developed PHC, and experimentally effective dose combinations have been identified. The follow-up part of this research includes the screening of the PHC against specific in vivo screening models in its initial stages. This research paper strictly summarises the acute and subacute profile of the salubrious polyherbal combination. Three herbs with strong literature background were selected: Tinospora cordifolia, Withania somnifera and Boerrhavia diffusa; and their crude extracts were prepared. The reported ED50 values of each of these plants were selected and mixed in 5 different combinations and subjected to Acute Toxicity studies. It was followed by the 28-days subacute toxicity screening of 9 different combinations that were elucidated from the acute toxicity study results. The findings were supported with recovery group studies to conform to any late toxicity symptoms of the polyherbal combination. The findings of this study helped in reaching some pathbreaking conclusions on the polyherbal combination designed.

scholarly journals A Toxicological Assessment of Creatyl-l-Leucine

2018 ◽  
Vol 37 (2) ◽  
pp. 171-187 ◽  
Author(s):  
Robin A. Reddeman ◽  
Róbert Glávits ◽  
John R. Endres ◽  
Timothy S. Murbach ◽  
Gábor Hirka ◽  
...  
Keyword(s):  
Micronucleus Test ◽  
Female Rats ◽  
Repeated Dose ◽  
Oral Toxicity ◽  
Synthetic Compound ◽  
Male And Female Rats ◽  
Toxicological Studies ◽  
Dose Oral

A battery of toxicological studies was conducted to investigate the genotoxicity and repeated-dose oral toxicity of creatyl-l-leucine, a synthetic compound, in rats in accordance with internationally accepted guidelines. There was no evidence of mutagenicity in a bacterial reverse mutation test and in an in vitro mammalian chromosomal aberration test. There was no genotoxic activity observed in an in vivo mammalian micronucleus test at concentrations up to the limit dose of 2,000 mg/kg bw/d. Creatyl-l-leucine did not cause mortality or toxic effects in Hsd.Han Wistar rats in a 90-day repeated-dose oral (gavage) toxicity study at doses of 1,250, 2,500, and 5,000 mg/kg bw/d. The no observed adverse effect level from the 90-day study was determined to be 5,000 mg/kg bw/d, the highest dose tested, for both male and female rats.

scholarly journals In silico, In vitro Screening of Plant Extracts for Anti-SARS-CoV-2 Activity and Evaluation of Their Acute and Sub-Acute Toxicity

2021 ◽  
Author(s):  
Latha Damle ◽  
Hrishikesh Damle ◽  
Shiban Ganju ◽  
C Chandrashekar ◽  
BR Bharath
Keyword(s):  
Acute Toxicity ◽  
Plant Extracts ◽  
In Silico ◽  
Female Rats ◽  
N Gene ◽  
Male And Female ◽  
E Gene ◽  
Male And Female Rats

AbstractBackgroundIn the absence of a specific drug for COVID 19, treatment with plant extracts could be an option worthy of further investigation.PurposeTo screen the phytochemicals for Anti-SARS-CoV-2 in silico and evaluate their safety and efficacy in vitro and in vivo.MethodThe phytochemicals for Anti-SARS-CoV-2 were screened in silico using molecular docking. The hits generated from in silico screening were subjected for extraction, isolation and purification. The anti-SARS-CoV-2 activity of plant extracts of Z. piperitum (ATRI-CoV-E1), W. somnifera (ATRI-CoV-E2), C. inophyllum (ATRI-CoV-E3), A. paniculata (ATRI-CoV-E4), and C. Asiatica (ATRI-CoV-E5). The in vitro safety and anti-SARS-CoV-2 activity of plant extracts were performed in VeroE6 cells using Remdesivir as positive control. The acute and sub-acute toxicity study was performed in Wistar male and female rats.ResultsThe percentage of cell viability for ATRI-COV-E4, ATRI-COV-E5 and ATRI-COV-E2 treated VeroE6 cells were remarkably good on the 24th and 48th hour of treatment. The in vitro anti-SARS-CoV-2 activity of ATRI-COV-E4, ATRI-COV-E5 and ATRI-COV-E2 were significant for both E gene and N gene. The percentage of SARS-CoV-2 inhibition for ATRI-COV-E4 was better than Remdesivir. For E gene and N gene, Remdesivir showed IC50 of 0.15 µM and 0.11 µM respectively, For E gene and N gene, ATRI-CoV-E4 showed IC50 of 1.18 µg and 1.16 µg respectively. Taking the clue from in vitro findings, the plant extracts A. paniculata (ATRI-COV-E4), W. somnifera extract (ATRI-COV-E5) and C. asiatica extract (ATRI-COV-E2) were combined (ATRICOV 452) and evaluated for acute and sub-acute toxicity in Wistar male and female rats. No statistically significant difference in haematological, biochemical and histopathological parameters were noticed.ConclusionThe study demonstrated the Anti-SARS-CoV-2 activity in vitro and safety of plant extracts in both in vitro and in vivo experimental conditions.

scholarly journals Bioactive Composition and Acute Oral Toxicity Studies on Persea Americana Seed Ethyl Acetate Fraction

2021 ◽  
pp. 10-17
Author(s):  
E. S. Asiwe ◽  
C. U. Igwe ◽  
K. M. E. Iheanacho ◽  
I. O. Onyeocha ◽  
V. A. Onwuliri
Keyword(s):  
Acute Toxicity ◽  
Ethyl Acetate ◽  
Ethyl Acetate Fraction ◽  
Persea Americana ◽  
Export Market ◽  
Oral Toxicity ◽  
Toxicological Effects ◽  
Phytochemical Composition ◽  
Toxicity Studies ◽  
Flame Ionization

Aims: Persea americana (P. americana) dubbed ‘green gold’ is a highly sought after fruit today, with insatiable export market. Different parts of avocadoes have been consumed both for nutritional and health benefits across regions of the world. Therefore, this study investigates the bioactive composition of P. americana seed ethyl acetate fraction and acute toxicological effects. Place and duration of study: Department of Biochemistry, Federal University of Technology Owerri, Imo State, Nigeria; between May 2019 and October, 2019. Methodology: Quantitative phytochemical composition was assessed using gas chromatography fitted with flame ionization detector (GC-FID) and acute toxicity determined using standard method. Results: Result of quantitative phytochemical composition of P. americana seed fraction shows a rich presence of phytochemicals such as epicatechin, kaempferol, proanthocyanin, rutin, resveratrol, ribalinidine, naringin, spartein, quinine, flavan-3-ol, anthocyanin, lunamarin, sapogenin, flavonones, flavones. The quantitative phytochemical composition of P. americana seed shows that among other phytochemicals, the seed is relatively rich in anthocyanin, quinine, epicatechin, tannin and proanthocyanin with concentrations of 69.39 ± 8.33 µg/g, 22.16 ±1.77 µg/g, 21.88 ± 2.53 µg/g, 19.86 ± 1.19 µg/g and 10.98 ± 0.55 µg/g respectively. The acute toxicity studies on the seed reveal that the ethyl acetate fraction of P. americana seed did not elicit any lethal signs of morbidity and mortality at doses up to 5000mg/Kgb.wt. and are therefore considered generally safe. Conclusion: P. americana seed ethyl acetate fraction contains essential phytochemicals with useful phyto-medicinal and nutraceutical benefits. The implications of these findings are further discussed.

scholarly journals A Toxicological Evaluation of Mango Leaf Extract (Mangifera indica) Containing 60% Mangiferin

2019 ◽  
Vol 2019 ◽  
pp. 1-14 ◽  
Author(s):  
Robin A. Reddeman ◽  
Róbert Glávits ◽  
John R. Endres ◽  
Amy E. Clewell ◽  
Gábor Hirka ◽  
...  
Keyword(s):  
Leaf Extract ◽  
Micronucleus Test ◽  
Mangifera Indica ◽  
Female Rats ◽  
Oral Toxicity ◽  
Toxicological Evaluation ◽  
Male And Female Rats ◽  
Toxicological Studies

A battery of OECD- and GLP-compliant toxicological studies was performed on mango leaf extract (Mangifera indica) containing 60% mangiferin (MLE). No evidence of genotoxicity was found in a bacterial reverse mutation test (Ames). While evidence of clastogenic activity was noted in an in vitro chromosomal aberration test, an in vivo mammalian micronucleus test showed no findings up to the limit dose (2000 mg/kg bw). A 90-day repeated dose oral toxicity study was conducted in rats using doses of 0 (vehicle control), 500, 1000, and 2000 mg/kg bw/day. Based on the lack of mortality or toxic effects in the 90-day study, the NOAEL for MLE in Han:Wist male and female rats was determined to be 2000 mg/kg bw/day, the highest dose tested.

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