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Studies on antinephritic effects of plant components (3): Effect of pachyman, a main component of Poria cocos Wolf on original-type anti-GBM nephritis in rats and its mechanisms.

The antinephritic effect of pachyman on original-type anti-GBM nephritis in rats was investigated. Pachyman was given to original-type anti-GBM nephritic rats for 10 days from the day of anti-GBM serum injection. Pachyman prevented urinary protein excretion and the elevation of serum cholesterol content. Histopathological observations of the glomeruli indicated that although the number of nuclei and adhesion to capillary walls of Bowman's capsule in nephritic control rats were significantly increased, pachyman reduced the degree of histopathological changes such as hypercellularity and adhesion as compared to the control group. Although the serum complement CH50 ratio in control group was significantly lower than that in the normal group, the decrease in serum complement CH50 was inhibited by pachyman, and rat C3 deposition in the glomeruli in the pachyman-treated group was significantly reduced. These results suggest that pachyman was effective against original-type anti-GBM nephritis in rats and that the antinephritic mechanisms of pachyman may be partly due to the inhibitory action of this agent on C3 deposition in the glomeruli.

Analysis of Variance↗

[Evaluation of the efficacity of coconut (Cocos nucifera), palm nut (Eleais guineensis) and gobi (Carapa procera) lotions and creams in indivirual protection against Simulium damnosum s.l. bites in Côte d'Ivoire].

With the interruption of larva treatments done by OCP as part of onchocerciasis control in West Africa, Simulium came back in abundance in forest regions and savannah fertile valleys. In addition to the severe discomfort, nuisance by Simulium is in certain cases incompatible with land use. Since ground treatment of larval breading sites using insecticides is not always possible or efficient, it is therefore a necessity to develop other methods among which individual protection against Simulium bites. The general objective of our study was to evaluate different vegetable oil compound repellent formulas against Simulium bites. Activities were carried out in savannah zone (Niakaramandougou) and in forest zone (Soubré) in Côte d'Ivoire. The methodology consisted in catching blackflies on volunteers whose legs were rubbed with a repellent. Gobi raw oil and coconut, palm nut and gobi formulas (lotions and creams) were tested. During each session, which lasted from 07:00 am to 12:00 and from 03:00 pm to 06:00 pm, one person did not apply any repellent and was used as the control person. The results of our experimentations show that for a given zone (savannah, forest), a repellent (coconut, palm nut, gobi) and a compound (shea butter, vaseline), there is no significant difference between protection rates obtained with lotions (maximum: 21 bites/person/day) and those obtained with creams (maximum: 30 bites/person/day). In other respects, the lotion of a given repellent seems to be efficient in savannah as in the forest, in protecting against Simulium bites. It is the same situation with creams. So, repellents can be an efficient solution against Simulium nuisance. However, experimentations should continue to confirm the high repellency of tested formulas, proceed to the identification of principles and evaluate the toxicity and irritant effect of repellents to be applied on the skin.

Administration, Cutaneous↗

Coco de mono.

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Awards and Prizes↗

[Effect of nitrogen fertilization and time of the harvest on the production and content of nitrates in fresh bean pods (Phaseolus vulgaris L. var. Coco nain)].

French beans were cultivated under different nitrogen fertilizer levels for fresh pods production. Pods were collected after different time intervals. Fresh weight of pods, number and nitrate nitrogen content were determined. Results are presented and discussed. They bring some informations about better cultivation methods to avoid a too high nitrates content in pods.

Agriculture↗