Report on Antidiabetic, Diuretic and Analgesic Activities of Methanolic Extract of Leaves of Strychnos colubrina L.an Endangered Medicinal Plant

Author(s):  
Indira Priyadarsini A. ◽  
S K M Basha2 ◽  
Chakrapani I S ◽  
Nagalakshmi Devamma M

Strychnos colubrina L. belongs to family Loganiaceae was known as snake wood tree.The methanolic extracts from Strychnos colubrina L. leave collected from different provinces in Penchalakona of Nellore district were prepared by decoction and maceration with methanol and evaluated for their antidiabetic, diuretic and analgesic activities. Methanolic extracts from Strychnos colubrina L. leaves (SCM) were evaluated for anti diabetic effect in Streptozocin (STZ) induced diabetes in rats. The blood sugar levels were analysed as indices of diabetes. 200 mg/kg b.w. of the extract showed a greater reduction in blood glucose level which was comparable to glibenclamide. To find out diuretic efficacy, SCM of leaves were administered to experimental rats orally at doses of 100 and 200 mg/kg and compared with Furosemide (20 mg/kg,o.p) as the standard. The rats treated with SCM of leaves in a dose of 200 mg/kg shown near similar urine output and electrolytes excretion when compared to the respective control. The analgesic activity of SCM of leaves is estimated using tail flick in mice. Results demonstrated that SCM of leaves exhibited a potent dose-dependent analgesic activity in all tested models for analgesia. This report could be used for medicinal and pharmaceutical exploration in the future.

Author(s):  
M Alimuzzaman ◽  
Muniruddin Ahmed

The work was carried out to investigate the analgesic activity of the whole plant of Tragia involucrata Linn. The dried whole plant was successively extracted with petroleum ether, ethyl acetate and methanol. Experiments were carried out with these extracts for their peripheral and central antinociceptive potentials on acetic acid induced writhing and radiant heat tail-flick models in mice, respectively. Both the ethyl acetate and methanolic extracts showed significant writhing inhibition while the elongation of tail-flick time was most prominent with methanolic extract at an oral dose of 500 mg/kg body weight. Key words: Tragia involucrata, Analgesic activity, Acetic acid induced writhing, Radiant heat tail-flick. Dhaka Univ. J. Pharm. Sci. Vol.4(1) 2005 The full text is of this article is available at the Dhaka Univ. J. Pharm. Sci. website


Author(s):  
Aravind Patil ◽  
Vijaya Chandra Reddy Konda

Background: Pain is an unpleasant sensory and emotional experience associated with actual or potential tissue damage or described in terms of such damage. In spite of many advances in pain research, we are unable to deal in an effective way. The cost for new drug development is increasing day by day. Drug repurposing is an approach to look for new use in drugs that are already approved for other indications. Mexiletine is a sodium channel blockers that is being approved for treatment of arrhythmias. It is being tried in treatment of various painful conditions. The present study is to evaluate the dose-dependent analgesic activity of mexiletine with ibuprofen.Methods: The analgesic activity of mexiletine was compared at doses of 15mg/kg, 30mg/kg and 45mg/kg with the standard dose of ibuprofen at 10mg/kg in male Wistar rats in thermal model of tail flick analgesiometer.Results: At lower doses (15mg/kg) of mexiletine, analgesic activity of ibuprofen was significantly higher. At higher doses (30 mg/kg and 45 mg/kg) of mexiletine, it was observed that there is no significant difference between the analgesic activities of both drugs.Conclusions: Mexiletine demonstrated a dose-dependent analgesic activity. There was no statistically significant difference between the analgesic activities of higher doses of mexiletine when compared to ibuprofen.


2019 ◽  
Vol 22 (2) ◽  
pp. 200-207
Author(s):  
Tufael Ahmed ◽  
Rifat Khan ◽  
Nafisa Tabassum ◽  
Fahima Aktar ◽  
Mohammad Kaisarul Islam

The crude methanol extract of Gouania tiliaefolia Lam. was partitioned by the modified Kupchan method and the fractions were evaluated for total phenolic content, antioxidant, cytotoxic, thrombolytic, hypotonic and heat-induced membrane stabilizing activities. The petroleum ether soluble fraction (PESF) and methanol extract (ME) showed the highest phenolic content of 78.30 ±1.60 mg and 70.37 ± 0.84 mg, respectively, which were expressed in gallic acid equivalent (GAE). Similar trends were observed in case of anti-oxidant and cytotoxic activities, where the PESF possessed the highest free radical scavenging activity and brine shrimp lethality (IC50 = 2.88 ± 0.02 μg/ml, LC50 = 2.59 ± 0.14 μg/ml), followed by ME (IC50 = 4.79 ± 0.17 μg/ml, LC50 = 3.38 ± 0.08 μg/ml) and CSF (IC50 = 37.51 ± 0.96 μg/ml, LC50 = 73.55 ± 0.26 μg/ml). In case of assays for thrombolytic and membrane stabilizing activities, all extractives showed insignificant results compared to the respective standards. The crude methanol extract of G. tiliaefolia was used to examine the in-vivo analgesic (central and peripheral), antidiarrheal and antidiabetic activities in Swiss albino mice. In case of castor oil induced diarrhea, the ME gave better reduction of diarrhea by 71.43% (at 400 mg/kg-body weight) compared to loperamide (64.29%). Antidiabetic activity was evaluated by oral glucose tolerance test and the ME showed 71.42% and 75.39% reduction of blood glucose at doses 200 and 400 mg/kg-body weight, respectively when compared with the standard glibenclamide that reduced blood glucose by 66.17%. The central- and peripheral-analgesic activity was evaluated by the tail-flick test and acetic acid induced writhing test, respectively. In both the cases, ME demonstrated dose-dependent analgesic activity compared to the standards. Bangladesh Pharmaceutical Journal 22(2): 200-207, 2019


Author(s):  
Abishek P. Raichurkar ◽  
Shashikala Gowdara Hanumanth Reddy

Background: Non-steroidal anti-inflammatory drugs and opioids are the most preferred drugs for pain relief. Considering the gastrointestinal toxicity, dependence and other side effects, search for better analgesic drug continues. Quercus infectoria (QI) is from the family Fagaceae. The galls of QI are comprised of tannin (36 to 60%), gallic acid, ellagic acid, and syringic acid. They possess antioxidant, anti-inflammatory, antimicrobial, and anti-diabetic properties. In India, galls of QI have been used for the treatment of toothache, diarrhoea, sore throat and inflammatory diseases as a home remedy. This study was conducted to evaluate the analgesic activity of methanolic extract of galls of QI on wistar rats using tail-flick and Eddy’s hot-plate methods. The objective of the study was to evaluate the analgesic activity of methanolic extract of galls of QI alone and as an adjuvant with tramadol on Wistar rats.Methods: Total of 24 wistar rats were included in the study and divided into 4 groups. They received drugs intra-peritoneally as follows. In group 1, normal saline, in group 2, tramadol, in group 3, methanolic extract of galls of QI and in group 4, tramadol with methanolic extract of galls of QI was available.Results: Methanolic extract of galls of QI produced significant maximal possible analgesia (<0.001) at 30 and 60 minutes in tail-flick method whereas it failed to produce analgesia in hot-plate method during all time intervals.Conclusions: Methanolic extract of galls of QI showed analgesic activity in tail-flick method indicating that its possible mechanism of action is spinally mediated.


2018 ◽  
Vol 17 (2) ◽  
pp. 227-235
Author(s):  
Godwin C. Ugwu ◽  
Chinagorom L. Okanya ◽  
Jude V. Egbuji ◽  
Jude I. Okwo ◽  
Emmanuel I. Nnamonu ◽  
...  

Buchholzia coriacea (wonderful kola) is a medicinal plant that has been used worldwide as an alternative medication to promote human health. Comparative nephroprotective effects of crude seed powder, aqueous and methanolic extracts of B. coriacea in hepatotoxic rats was investigated for 56 days. The crude powder (BCCP), aqueous extract (BCAE) and methanolic extract (BCME) significantly reduced (p<0.05) the levels of creatinine and uric acid and decreased minimally throughout the treatment periods. Total protein increased significantly (p<0.05). Significant decrease (p<0.05) were observed with 200 mg/kg BCAE and BCCP respectively in urea and BUN levels. Noticeable nephroprotective effects may be attributed to the presence of phytochemicals like flavonoids and tannins which act as antioxidants. This study has demonstrated that B. coriacea crude seed powder, methanolic and aqueous extracts caused no adverse effect on the rat kidney and may be recommended for the management of nephrotoxicity Dhaka Univ. J. Pharm. Sci. 17(2): 227-235, 2018 (December)


Author(s):  
Riaz Ullah ◽  
Abdelaaty A Shahat ◽  
Ali S Alqahtani ◽  
Omer Mohammed Almarfad ◽  
Mohammad Sayer M Alharbi ◽  
...  

The anti-inflammatory, antipyretic and analgesic activities of two concentrations (250 and 500 mg/kg) of the chloroform and butanol fractions of Zilla spinosa were determined. The carrageenan-induced rat paw edema assay was exercised for assessing the anti-inflammatory activity in rats, yeast-induced hyperthermia was utilized to assess the antipyretic activity in mice and the analgesic activity was measured by three different methods (hot-plate test model in mice, tail flick test in mice and acetic acid-induced writhing in mice). The antioxidant activity was studied by using the DPPH assay. The chloroform fraction of the methanol extract of Z. spinosa (ZSC) demonstrated the maximum inhibition of inflammation (50% at 500 mg/kg; 44% at 250 mg/kg). The chloroform fraction showed significant antipyretic activities (p andlt; 0.001 at 500 mg/kg) after 60 and 120 min of administration. ZSC also exhibited significant analgesic activity (p andlt;0.001). The butanol fraction (ZSB) was inactive in all the biological screening assays.


Author(s):  
Most. Nazma Parvin

<p class="abstract"><strong>Background: </strong><em>Saraca indica</em> or <em>Saraca asoca</em> belonging to the family Caesalpiniaceae. It<em> </em>is popularly known as Ashoka, is the most ancient tree of Bangladesh. This versatile plant has anti-cancer, anti-menorrhagic, anti-oxytocic, anti-microbial activity and has extended uses in ayurveda, unani and homeopathy. The present study attempts to investigate the cytotoxic and analgesic activities of the methanol extract of bark and the anthelmintic activity of the leaf extract of <em>Saraca indica</em>.</p><p class="abstract"><strong>Methods:</strong> The cytotoxic activity of the methanol extract of the bark was performed by brine shrimp lethality bioassay and analgesic potential of the bark extract was evaluated using both acetic acid induced writhing test and tail-flick tests to understand the central analgesic activity using Swiss Albino mice as experimental animal. Anthelmintic activity of the leaf extract was performed by observing the time of paralysis and the time of death of earthworms, <em>Pheretima posthuma</em>.  </p><p class="abstract"><strong>Results:</strong> The methanol extract of the bark showed moderate cytotoxic activity when compared with the standard drug vincristine sulphate. The results of analgesic activities suggested that the methanol extract of the bark possess significant analgesic activity in mice, which is comparable to the standard drug, diclofenac-Na. The fresh juice extract of the leaf of <em>S. indica </em>showed potent anthelmintic activity when compared with standard drug, albendazole.</p><p><strong>Conclusions:</strong> Our present study, demonstrates the cytotoxic, analgesic and anthelmintic, properties of <em>Saraca</em> <em>indica</em>, which validate its use in traditional medicine.</p>


Author(s):  
SWOPNA PHUKAN ◽  
SAHELI DAS

Objective: The aim of the study is to evaluate and compare the analgesic activities of Curcuma longa Linn. in the experimental animals. Methods: The present study was conducted in the Department of Pharmacology, Gauhati Medical College and Hospital, after getting approval from the Institutional Animal Ethics Committee (No MC/68F/2009/MAR-19/02). Healthy rodents weighing between 150 and 200 g were selected and randomly divided into five groups, each group consisting of six animals. Tail-flick analgesiometer was used to assess the analgesic activity of C. longa Linn. and ibuprofen in the experimental animals. Appropriate statistical analyses like Student’s t-test were used to analyze the data. Results: The mean reaction time (s) was prolonged on gradually increasing the dose of C. longa Linn. from 200 to 400 mg/kg. At 400 mg/kg dose C. longa Linn. produced similar analgesic activity as compared to ibuprofen (30 mg/kg). Conclusion: From the study, it can be concluded that curcumin has the capacity to attenuate pain, and when administered in high doses, may produce similar activity as other conventional NSAID’s.


2021 ◽  
Vol 21 (No 1) ◽  
Author(s):  
Anjoo Kamboj ◽  
Sanjana Piplani

Synthetic analgesic drugs have prominent side effects like gastritis, gastric ulcer, kidney disorder and cardiac arrhythmias. The genus Solanum has been primarily used for various therapeutic effects, mainly analgesics, in the indigenous system of medicine. The current research aimed to investigate and compare the analgesic activities of methanolic extracts of leaves of Solanum indicum, Solanum surattense and Solanum torvum. Using acetic acid induced writhing method and hot plate method, the analgesic activity was evaluated. Significant anti-nociceptive effects were observed on both animal models after the application of different doses of the extracts of Solanum species. The results exhibited that MESI, MESS and MEST at a dose of 200 and 400 mg/kg produced analgesic effects equivalent to diclofenac (10 mg/kg). However the extracts at 400 mg/ kg exhibited more pronounced analgesic activity. The results of this study demonstrated that the analgesic effects of all the three species were significant to each other and validate the traditional use of the plants of this Genus for the treatment of pain.


Author(s):  
Imran Zaheer ◽  
Syed Ziaur Rahman ◽  
Rahat Ali Khan ◽  
Mehtab Parveen ◽  
Priyamvada Sharma

Background: The objective of the study was to evaluate analgesic activity of ethanolic extract, methanol and benzene fraction of Myristica fragrans on wistar albino rats.Methods: The present study was carried out in the department of pharmacology JNMC AMU and F.H. Medical College, Agra. The analgesic activity was evaluated by employing the Eddy’s hot plate method and tail flick response method. In both the tests, Rats of either sex weighing 150-200 g were used. The total number of animals n=36 were allocated to six groups. Each group consist of six animals each. The response noted in animals that were tested by hot plate method was reaction time for licking/biting of both the paws before and after administration of control & test drugs. However in Tail flick test, the pain threshold response was recorded before and after administration of control & test drugs. The statistical analysis was done by using one-way ANOVA. The data is expressed as Mean±SEM. P<0.05 was considered to be statistically significant.Results: Ethanolic extracts and methanol fraction of M. fragrans showed statistically significant (p<0.001) increase in reaction time for licking/biting in hot plate method. On the contrary a significant increase in pain threshold was also recorded in tail flick response test. It is interesting to note that no significant degree of analgesia related to any dose of benzene fraction was observed.Conclusions: The present study reveals the dose dependent significant analgesic activity of the extracts of M. fragrans i.e. ethanolic extracts and methanol fraction in both the test. However, the degree of analgesia was recorded significantly higher in groups received higher doses of extracts of M. fragrans.


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