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Jean Koudou*, Louis-Clément Obame, Brice S. Kumulungui, Prosper Edou, Gilles Figueredo, Jean –Claude Chalchat and Alfred S. Traore
Abstract: The essential oil isolated from the resin of Aucoumea klaineana Pierre (Burseraceae) by Hydrodistillation was analyzed by capillary gas chromatography (GC) and combined Gas Chromatography/Mass Spectrometry (GC/MS). The analysis led to the identification of 28 components. This oil contained mainly monoterpenoids (96.06%) in which p-acetyl anisole is the single benzenic compound (0.18%). The predominant constituents in the essential oil were -3-carene (72.31%), p-cymene (3.76%), limonene (4.04%), terpinolene (6.28%) and -terpineol (4.34%). The essential oil showed antioxidant and weak DPPH radical scavenging activities and it displayed the inhibition of lipid peroxidation.[...] Read More.
Keywords: Aucoumea klaineana, Burseraceae, essential oil, antioxidant activity.
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Amole Olufemi Olatokunboh*, Yemitan Omoniyi Kayode and Oshikoya Kazeem Adeola
Abstract: The anticonvulsant activity of the aqueous leaf extract of Rauvolfia vomitoria (Afzel) was investigated by testing the effects of the extract on strychnine-, picrotoxin and pentylenetetrazole induced seizures in mice. Experiments were carried out on male albino mice and the animals were randomly allotted to the different control and test groups. The extract, at a dose of 200 mg/kg, prolonged the onset of seizures from strychnine, picrotoxin and pentylenetetrazole in the animals. Acute toxicity testing produced a medial lethal dose of 17.5 g/kg. Phytochemical screening of the plant reveals the presence of alkaloids, saponins, tannins and reducing sugars. The results indicate a possible efficacy potential of the aqueous leaf extract of R. vomitoria in convulsions.[...] Read More.
Keywords: Rauvolfia vomitoria, convulsion, phytochemical, acute toxicity.
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Md. Mokarram Hossain*, Israt Jahan Biva, Rumana Jahangir and Md. Mynol Islam Vhuiyan
Abstract: In the present study, we have investigated the possible CNS (Central Nervous System) depressant and analgesic action of the methanol extract of Aphanamixis polystachya leaf. Its CNS depressant activity was evaluated by using thiopental sodium- induced sleeping time, hole cross and open field tests. The analgesic activity was also investigated for its central and peripheral pharmacological actions using hot plate and tail immersion test and acetic acid -induced writhing test in mice respectively. The extract decreased the motor activity and exploratory behavior of mice in hole cross and open field test (p < 0.001). Moreover, the extract significantly maximized the duration of sleeping time when administered with thiopental sodium (p < 0.001). The extract, at the dose of 250 and 500 mg/kg, produced a significant (p < 0.05, p < 0.001) increase in pain threshold both in hotplate and tail immersion methods in a dose dependent manner. The results were comparable to the reference standard Nalbuphine. In acetic acid-induced writhing test, the extract (500 mg/kg) produced a maximum of 75.9% inhibition (p < 0.001) of writhing reaction compared to the reference drug Diclofenac-Na (10 mg/kg) (78.1%). These results suggest that the extract possesses strong CNS depressant and analgesic activity in mice.[...] Read More.
Keywords: Aphanamixis polystachya, CNS depressant activity, analgesic activity.
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M. Moshahid A. Rizvi*, Irshad M., Gamal El Hassadi and Salaem Ben Younis
Abstract: Cassia fistula Linn, a semi-wild Indian labrum has been used in the treatment of various diseases in different parts of the world since time immemorial. In Indian literature there has been multiple descriptions regarding its usefulness in the treatment of various diseases. Some authors have reported its antibacterial, antioxidant, hepatoprotective and hypoglycemic potentials. Many other authors have indicated towards the free radical scavenging and antioxidant potential of C. fistula both in vitro as well as in vivo. Despite this valuable available information on this plant there appears a vast virgin area of research on this plant to find out the real natural treasure. The antioxidant and hepatoprotective nature of Cassia fistula seems to depend on the total phenolic, proanthocyanidin and flavanoid contents of this labrum. This paper reviews all the experimental studies so far performed on C. fistula. This is likely to have important implications on designing any future research on this plant for their potential utility in herbal drug system or in nutritional supplements.[...] Read More.
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Keji Tang*, Ruixin Nie, Longjun Jing, and Quansheng Chen
Abstract: To study the anti- athletic fatigue effects of saponins from American ginseng (SAG), male Kunming mice were randomized into 4 groups equally based on body weight after one week adoption, and they are: C group (control mice given distilled water for 14 days), LS group (mice treated SAG with 50 mg/kg for 14 days), MS group (mice treated SAG with 100 mg/kg for 14 days) and HS group (mice treated SAG with 200 mg/kg for 14 days). The C group was given distilled water and LS, MS; HS groups were given various doses of SAG (50, 100, 200mg/kg) for 14 consecutive days. The levels of lactate, serum urea nitrogen, liver glycogen, muscle glycogen, the swimming endurance time and body weight were determined before and after swimming test. Different doses of SAG significantly lengthened the swimming endurance time and increased the levels of liver glycogen and muscle glycogen, while reducing the levels of lactate significantly compared with control group, especially in the MS group. Our data demonstrated SAG has noticeable anti-athletic fatigue effect on mice. These effects were dose-dependent, and the strongest effect on most biomarkers was seen with 100 mg/kg dose.[...] Read More.
Keywords: Saponins, American ginseng, anti-athletic fatigue activity.
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O. A. Aiyegoro, A. J. Afolayan and A. I. Okoh*
Abstract: This study has been done to evaluate the interactions between acetone, chloroform, ethyl acetate and methanol extracts of Helichrysum longifolium in combination with six first-line antibiotics comprising of Penicillin G sodium, Amoxicillin, Chloramphenicol, Oxytetracycline, Erythromycin and Ciprofloxacin using both the time-kill and the chequerboard methods and against a panel of bacterial isolates comprised of referenced, clinical and environmental strains. The time-kill method revealed the highest bactericidal activity exemplified by a 6.7 Log 10 reduction in cell density against Salmonella spp. when the extract and Penicillin G are combined at ½ × MIC. Synergistic response constituted about 65%, while indifference and antagonism constituted about 28.33% and 6.67% in the time kill assay, respectively. The chequerboard method also revealed that the extracts improved bactericidal effects of the antibiotics. About 61.67% of all the interactions were synergistic, while indifference interactions constituted about 26.67% and antagonistic interactions was observed in approximately 11.66%. These suggest that the crude extracts of the leaves of H. longifolium could be potential source of broad spectrum antibiotics resistance modifying compounds.[...] Read More.
Keywords: Synergism, antibiotics, extracts, chequerboard, time-kill.
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Victor de Andrade*, Katijah Khoza-Shangase* and Fatima Hajat*
Abstract: This project sought to obtain information regarding the perceptions of oncologists with regards to the ototoxic effects of cancer chemotherapy. Ten oncologists from 2 public hospitals in Gauteng participated in this project. Data were collected from self- administered questionnaires completed by participants. Using a qualitative and quantitative paradigm, data analysis utilized content analysis and descriptive statistics. Only 50% of the participants reported referring patients for audiological management during the chemotherapeutic process. None of the respondents reported having protocols in place for ototoxicity monitoring. Therefore, it appears as though ototoxicity and the role of the audiologist are not fully realized within the sample in the current study. Furthermore, it would seem as though oncologists need to be aware of ototoxicity; the role of the audiologist; and the need to include an audiologist in the oncology team. Results from the current study highlight the need for establishment and implementation of protocols and ototoxicity monitoring programmes in government hospitals in Gauteng.[...] Read More.
Keywords: South Africa, cancer, chemotherapy, ototoxicity, sensory neural hearing loss.
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Donatus Ebere Okwu* and Ephraim Chintua Igara
Abstract: A new antibacterial agent 51, 71 dimethyl 61– hydroxy 31, phenyl 3 a - amine b - yne sitosterol 1 has been isolated from Datura metel leaves. The structure of 1 was established using 13C, 1H NMR, IR and MS spectroscopic data. Compound 1 displayed antibacterial activity against Staphylococcus aureus, Pseudomonas aeruginosa, Proteus mirabis, Solmonella typhi, Bacillus subtilis and Klebsiella pneumonia but could not inhibit Escherichia coli. This result supported the use of Datura metel in phytomedicine for the treatment of asthma, cough, burns and healing of wounds in Nigeria.[...] Read More.
Keywords: Datura metel, sterol alkaloid, antibacterial agent, phytomedicine.
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Coker, M. E., Emikpe, B. O.*, Adeniyi, B. A. and Budale, B. A.
Abstract: This study was designed to evaluate the anti-inflammatory potential, heamatological and histological changes induced in rats due to the administration of methanolic extracts of Ficus thonningii leaves. Fifteen wistar rats were divided into 3 groups of 5 rats per group to measure the anti-inflammatory activity using the inhibition of carageenan-induced oedema. For the acute oral toxicity test, twenty mice divided into 4 groups of 5 animals each were used. The doses of the extract given were 0.2, 0.4, and 1.0 g/kg body weight while the control group was given an equivalent volume of 2.5% v/v propylene glycol. The blood samples were collected for haematology before, mid-way and after 21 days. The body weights were also noted. Student “t”-test was used to determine the degree of significance between the treatment groups. The liver, kidney, spleen, ovary, uteri and lungs the animals were examined for histopathological changes. The extract of F. thonningii has anti-inflammatory properties that are comparable to aspirin and are significant (P[...] Read More.
Keywords: Anti-inflammatory, Ficus thonningii, heamatological and histological changes, rats.
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Emeje Martins*, Ihimekpen Omoyeme, Isimi Christiana, Sabinus Ofoefule and Kunle Olobayo
Abstract: Afzelia gum was obtained from the bark exudates of Afzelia africana plant, characterized and evaluated for its compaction properties in hydrochlorothiazide tablet formulations. Compressional properties of the formulations were analyzed using density measurements and the Heckel equation as assessment parameter. Formulations containing Afzelia gum as a binder show a slower onset and lower extent of plastic deformation than those containing the 2 standard binders, tragacanth and gelatin. While retative density Db values for formulations containing tragacanth and gelatin generally increased with increased concentration up to 3% w/w, those containing Afzelia gum were at variant with the binder concentrations. Formulations containing Afzelia gum were also found to exhibit higher degree of packing than those containing tragacanth and gelatin. Yield values for formulations containing Afzelia gum was also found to be at variant with the binder concentration. The values decreased between 1 and 3% w/w and increased at 4% before decreasing again at 5% w/w. Afzelia gum improved the fluidity of hydrochlorothiazide granulation better than tragacanth and gelatin. This study suggests that Afzelia gum has good physicochemical properties that would make it a useful binder in hydrochlorothiazide tablet formulations.[...] Read More.
Keywords: Afzelia gum, tragacanth, gelatin, hydrochlorothiazide, Heckel equation, compaction characteristics.
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