[Evaluation of the anti-inflammatory activity and phytochemical screening of Annona senegalensis leaves]. / Évaluation de l'activité anti-inflammatoire et screening phytochimique des feuilles de Annona senegalensis.

OBJECTIVE: This study aims to highlight the anti-inflammatory activity of ethanol extract of Annona senegalensis and do its phytochemical screening. METHODS: Rats were divided into three groups. The first group received only saline injection and instillation by intraperitoneal injection on days D0 and D7. This phase was the sensitization of that group. Then, on days D21, D22 and D23, the rats of the same group (Group 1) were injected with saline under anesthesia. The second group (Group 2) was composed of rats had not undergone treatment with the extract of Annona senegalensis. The rats in this batch have been sensitized by intraperitoneal injection (50 µL) of a solution of albumin (50 mg/rat) dissolved in aluminum hydroxide on days 0 and 7. Then during the challenge phase, saline containing 0.9% sodium chloride were injected intraperitoneally on days D21, D22 and D23. The sacrifice took place at D24 or 24 hours after the last challenge to ovalbumin. Similarly, rats of the third group (Group 3) have been sensitized by ovalbumin combined with aluminum hydroxide on days D0 and day D7. Then during the stage of provocation, rats in this batch received at days D21, D22 and D23, conjugated injection of albumin and ethanol extract of Annona senegalensis (injection of 0.4 mL of 7.10(-2) mg/kg body weight). The aqueous extract of Annona senegalensis has been previously prepared in saline. Twenty four hours after the last injection corresponding to D23, the rats were sacrificed under anesthesia. Secondary metabolites have been characterized by physico-chemical properties. RESULTS: Rats in the control (Group 1) gave an average of 24 ± 0.02 mast cells, 7 ± 0.1 macrophages, 9 ± 0.05 eosinophils. In the control group was not revealed the presence of neutrophils. Following the steps of provocation and awareness albumin (Group 2), we observed a significant increase in the number of inflammatory cells compared to control group (p < 0.001). Indeed, mast cells and macrophages have suffered increased respectively to 164 ± 0.01 and 253 ± 0.04. While eosinophils have increased from 9 ± 0.05 to 81 ± 0.01. There were 31 ± 0.02 neutrophils in Group 2. Group 3 treated with Annona senegalensis (7.10(-2) mg/kg) induced a significant decrease in the number of inflammatory cells compared to control group (p < 0.001). Indeed, mast cells decreased from 164 ± 0.01 to 89 ± 0.03. Similarly, the number of macrophages decreased from 253 ± 0.04 to 175 ± 0.06 and neutrophils decreased from 31 ± 0.02 to 10 ± 0.05. Finally, the eosinophils have suffered a decrease (from 81 ± 0.01 to 61 ± 0.08). However, after treatment with the extract, the values of different cell types have always been significantly higher (p < 0.001) compared to those in the control group (except neutrophils). This result indicates that the extract of Annona senegalensis did not completely inhibit the inflammatory effect induced by albumin. The major classes of secondary metabolites, terpenoids, coumarins, flavonoids and tannins were detected in the leaves of the plant. However, they are low in alkaloids and substances quinone. CONCLUSION: The extract induced a significant decrease in the number of inflammatory cells. This effect is likely due to higher concentrations of tannins and phenolic compounds in the extract of plant. Thus this study provides a scientific validation of the use of this plant against asthma and cough in the Ivorian pharmacopoeia. However, its mechanism of action remains to be elucidated.

[Immune, inflammatory, and nutritional protein profile in children with iron deficiency in Côte d'Ivoire]. / Déficit en fer, profil protéique immunitaire, inflammatoire et nutritionnel chez l'enfant de Côte-d'Ivoire.

Throughout the world and particularly in sub-Saharan Africa, deficiencies in trace elements constitute a real public health problem because of the insufficient nutritional quality of food. These trace elements are necessary for many of the body's biochemical reactions. The role of microelements such as vitamin A and zinc has been established in the functioning of the immune system and secretion of inflammatory reaction proteins, but the role of iron in these functions remains to be elucidated. The sample consists of 186 children (3/4) 80 with an iron deficiency and 106 with normal iron status. They range in age from 5 to 15 years and all attend school in the department of Adzope. The study excluded all children with parasites that might affect blood iron, protein and other hematological indicators, in particular, Plasmodium falciparum, Giardia intestinalis, Trichomonas intestinalis, Ascaris lumbricoides, and Ancylostoma. Inflammatory, immune and nutritional proteins were measured by radial immunodiffusion (Mancini's method). Ferritin was measured by a specific immunoenzymatic assay. Hematological indicators were tested by an automatic blood cell counter. Nutritional status was estimated by the weight/height ratio (W/H). This analysis showed that iron deficiency was associated with reduced IgG levels (p < 0.05), although immunoglobulins A and M remained stable (p > 0.05. Iron deficiency was also associated with reduced levels of thyroxine-binding prealbumin (TBPA) and albumin (p < 0.05). Inflammatory proteins did not differ significantly between the two groups (p > 0.05). Furthermore, the prognostic inflammatory and nutritional index (PINI) did not show any inflammatory, vital or nutritional risk, because it was lower than or equal to 2. Finally, malnutrition was not observed in the iron-deficient children: the difference in the weight/height ratio (W/H = 96.58 +/- 2.4%) between the children with iron deficiency and those with normal iron status (98.7 +/- 4.3%) did not differ significantly. The reduced IgG associated with iron deficiency may be attributed to the role that iron plays in the proliferation and maturation of lymphocytes. Reduced iron levels would thus lead to slowing down the hematopoietic mechanism, resulting in a decrease in B lymphocyte production and thus inevitably a reduction in IgG synthesis. The reduction in albumin and TBPA associated with the iron deficiency but in the absence of any sign of malnutrition (W/H > 96%) or inflammatory risk (PINI < 2) in either study group shows that iron may play a dominant role during protein synthesis. Iron deficiency might limit the energy of cellular tissues, leading to a reduction in RNA activity (transcription and translation), which would in turn decrease ribosome activity in tissues and thus reduce amino acid synthesis in cells, resulting in the reduction observed in protein synthesis. The lack of difference between the study groups in inflammatory proteins, notably CRP and alpha1-GPA, indicates that iron deficiency does not appear to be related to an inflammatory process. This study of children without any apparent clinical signs of iron deficiency shows that such a deficiency may be associated with a disruption in protein production. The proteins concerned include IgG, TBPA and albumin. The public authorities should pay particular attention to improving children's diets, especially their micronutrient levels, including for iron, vitamin A and zinc.

[Intestinal parasites, haematological profile and anthropometric status of schoolchildren in Cotê d'Ivoire]. / Parasites intestinaux, profil hématologique et statut anthropométrique de l'enfant scolarisé en Côte d'Ivoire.

In West Africa intestinal parasites diseases and lack of food are quoted among the main causes of childhood morbidity. This study aimed to assess both the frequency and the relationships between anthropometric values and haemogramme troubles among children living in a West tropical forest area. A cross-sectional survey was tested on a sample of 262 children drawn at two levels. The parameters studied were the weight, height, age, sex, percentiles at height per age and weight per height ratios, haemogramme and intestinal parasites. The results revealed that microcyte hypochrome anemia is generally dominant in the haematological profile. The intestinal parasites carriage has a frequency higher than 68%, but has no influence on either the haematological profile or the anthropometric status. However, the haematological troubles found during that experience revealed a strong association with weight-height ratio troubles. Furthermore, malnutrition signs were observed.

[Comparison of the mechanism of cardiotonic action of the fraction 3 of MAI-BAO and digoxin on rat isolated heart]. / Comparison du mecanisme de l'action cardiotonique de la fraction 3 de MAÏ-BAO et de la digoxine sur le coeur isole de rat.

UNLABELLED: MAI-BAO (MB) is a beverage obtained by fermentation of sweet Camellia sinensis tea by the Tea-Mushroom treasure. The action of the chromatographic fraction 3 of MAI-BAO (MB-F3) is cardiotonic. AIMS: To compare the mechanism of cardiotonic activity of MB-F3 and digoxin (Dx) in rats. MATERIALS AND METHODS: MB-F3 obtained by gel chromatography on sephadex G-50 and digoxin are used to infuse the isolated rat heart with the device Langendhorff for the record of cardiac contractions. The biochemical mechanism of cardiac effect of MB-F3 and Dx was determined by measuring phosphorus by the method of Sumner. RESULTS: MB-F3 has a significant positive inotropic effect (P<0.05) as Dx (P <0.01) with respective effective Doses 50% 1mg/ml and 10-6 mg/ml. Furthermore, MB-F3 exerts a competitive inhibition on the ATPase-Na+/K+ less than Dx (P<0.05). CONCLUSION: MB-F3 exerted digitalis-like effect less than digoxin on the rat heart.

[Reversible immunosuppression, liver and kidney markers, calcium and phosphorus in the healthy rabbit]. / Immunosuppression reversible, marqueurs du foie, des reins et metabolisme phosphocalcique chez le lapin sain.

AIM: The aim of this study was to determine one or several doses of Methylprednisolone ( MP) who leads a long time of immunosuppression without disrupting phosphor and calcium, liver and kidney markers at the healthy rabbit. MATERIAL AND METHODS: This study was made to fifteen rabbit. Five (5) batches were constituted according to Nacl and Methylpredmisolone administered dose by body weight. Control batch ( Nacl 0,9%); batch I (2,5mg / kg MP); batch II ( 5mg / kg MP); batch III ( 10mg / kg MP) and batch IV ( 15 mg / kg MP). Biochemical parameters were measured by chemical and enzymatic methods. RESULTS: The results of this study showed an immunosuppression during seven days with 10 and 15 mg / kg of MP doses (P < 0.05). The biochemical disturbances were only observed with 15 mg / kg dose where calcium was lowered to day 15 and TGO increased to day 3 according to day 0 (P < 0.05). CONCLUSION: This study showed that the doses which lead a long time of immunosuppression ( 7 days) are 10 and 15 mg / kg of MP, then the dose which does not disrupt the biochemical parameters is 10 mg / kg of MP.