Evaluation of acute and subacute toxicities of aqueous ethanolic extract of leaves of Senna alata (L.) Roxb (Ceasalpiniaceae)

We investigated the acute and subacute toxicities of hydro-ethanolic extract of leaves of Senna alata (L.) Roxb. in Swiss mice and Wistar albino rats. The mice were divided into 6 groups of 10 animals and each group received once by intra gastric gavages 0, 4, 8, 12, 16, 20 times 1000 mg/kg dose of extract. Distilled water served as the control. For the subacute toxicity, three groups of 10 rats (5 males and 5 females) were treated per os with distilled water (control), 500 or 1000 mg/kg of extract every 48 h for 26 days. At the end of treatment blood sample and 20% liver homogenates were collected for biochemical analyses. The results indicated that the medium lethal dose (LD50) was about 18.50 g/kg of body weight. Significant variation (P<0.05) of the body weight was observed after 26 days of treatment, in some biochemicals index of serum and 20% liver homogenates (glutathione , alkaline phosphatase (APL), aspartate aminotransferase (AST)), haematological parameters (platelet) also in the female relative weight of heart of rat. Some of parameter investigated in this study showed dose responsive. The histopatological study of the liver did not show any features after the treatment but, the extract seems to ameliorate the liver architecture.Keywords: Acute toxicity, alkaline phosphatase, hematological and histopatological stud

Contribution Of Autopsy To Medical Practice In Cameroon: A 10 year review.

Of 12.000 bodies received at the mortuary of the Yaounde General Hospital, 126 were autopsied in this 10-year retrospective study from 1997 to 2007, giving a rate of 1 autopsy in 100 deaths. 72.2% of cases were males against 27.8% females. The predominant age group was 20-69 years (57.1%). The main causes of death include natural disease (32.5%), physical aggression (20.6%), road traffic accident (19.8%), poisoning (9.5%), asphyxia (7.1%) and firearm injury (6.4%). The indication for autopsy was mainly medico-legal (91.7%). The circumstances of death showed a predominance of natural causes (34.1%), murder (32.6%), and homicide (28.6%). Though the benefits of an autopsy to the family, medical practice and entire community are enormous, the rate of this procedure in our community is low. We recommend public education and advocate for a legislative framework thatregulates autopsy practice, at least, in teaching hospitals in our country

Acute And Subacute Toxicity Of Aspilia Africana Leaves

This study was designed to evaluate the toxicity of the aqueous extract of Aspilia Africana leaves. Oral doses of 500 mg/kg and 1000 mg/kg were administered for 28 days to rats after every 2 days for sub-acute toxicity. For acute toxicity, 5 doses of 2, 4, 8, 12 and 16g/Kg body weight were investigated in mice. The control groups consisted of mice or rats administered with distilled water. The signs of toxicity fluctuated lightly from one mammal to another throughout the experiment. The liver, kidneys and heart weight of rats revealed no significant differences between the test groups and the control. The results indicated that the medium lethal dose (LD50) was found to be greater in females than males with an average of 6.6g/Kg body weight for both sexes. Regardless of the significant differences observed at certain points in some biochemical parameters (ALT, AST, ALP, Creatinine and Glutathione); none showed any linear dose responsiveness. On the other hand, most of the parameters investigated were found to be gender dependent. These results suggested that A Africana can be classified among substances with low toxicity. Keywords: Aspilia Africana, Asteraceae, toxicities, dose responsiveness.. African Journal of Traditional, Complementary and Alternative Medicines Vol. 4 (2) 2007: pp. 127-13

Case report : Encephalopathy after ivermectin treatment in a patient infected with Loa loa and Plasmodium spp

Despite over 350 million people being safely treated with ivermectin, there have been rare cases of death post-treatment; these events are most often associated with high Loa loa microfilaremia. This first autopsy description of an encephalopathy case following the administration of ivermectin involves a 45-year-old male who became comatose 3 days after treatment. He slowly deteriorated over 5 weeks and died at 54 days after the anthelminthic treatment, probably as a result of a secondary skin or pulmonary infection exacerbated by malnutrition. The major pre- and post-autopsy findings included the presence of high loads of Loa loa, positivity for Plasmodium, the presence of a longstanding respiratory condition, and vascular pathology in the brain. The central nervous system lesions have similarities with those described in previously reported cases of Loa loa-associated death following diethylcarbamazine treatment

Acute and Subacute Toxicity of Aspilia Africana Leaves

This study was designed to evaluate the toxicity of the aqueous extract of Aspilia africana leaves. Oral doses of 500 mg/kg and 1000 mg/kg were administered for 28 days to rats after every 2 days for sub-acute toxicity. For acute toxicity, 5 doses of 2, 4, 8, 12 and 16g/Kg body weight were investigated in mice. The control groups consisted of mice or rats administered with distilled water. The signs of toxicity fluctuated lightly from one mammal to another throughout the experiment. The liver, kidneys and heart weight of rats revealed no significant differences between the test groups and the control. The results indicated that the medium lethal dose (LD50) was found to be greater in females than males with an average of 6.6g/Kg body weight for both sexes. Regardless of the significant differences observed at certain points in some biochemical parameters (ALT, AST, ALP, Creatinine and Glutathione); none showed any linear dose responsiveness. On the other hand, most of the parameters investigated were found to be gender dependent. These results suggested that A Africana can be classified among substances with low toxicity

Full Length Research Paper - Evaluation of acute and subacute toxicities of aqueous ethanolic extract of leaves of Senna alata (L.) Roxb (Ceasalpiniaceae)

We investigated the acute and subacute toxicities of hydro-ethanolic extract of leaves of Senna alata (L.) Roxb. in Swiss mice and Wistar albino rats. The mice were divided into 6 groups of 10 animals and each group received once by intra-gastric gavages 0, 4, 8, 12, 16, 20 times 1000 mg/kg dose of extract. Distilled water served as the control. For the subacute toxicity, three groups of 10 rats (5 males and 5 females) were treated per os with distilled water (control), 500 or 1000 mg/kg of extract every 48 h for 26 days. At the end of treatment blood sample and 20% liver homogenates were collected for biochemical analyses. The results indicated that the medium lethal dose (LD50) was about 18.50 g/kg of body weight. Significant variation (P<0.05) of the body weight was observed after 26 days of treatment, in some biochemicals index of serum and 20% liver homogenates (glutathion , alkaline phosphatase (APL), aspartate aminotransferase (AST)), haematological parameters (platelet) also in the female relative weight of heart of rat. Some of parameter investigated in this study showed dose responsive. The histopatological study of the liver did not show any features after the treatment but, the extract seems to ameliorate the liver architecture