[Polyarteritis nodosa with a spontaneous recovery]

The periarteritis nodosa [PAN] is a serious necrotizing vasculitis. Healing is, classically, obtained after a long-term treatment using corticosteroids and immunosuppressive agents. Purpose: Reporting the case of a NAP or was spontaneous healing without having recourse to any immunosuppressive treatment. We report an observation of a patient aged 27 monitoring for manic-depressive psychosis hospitalized for a fever during the course associated with high blood pressure [hypertension], a weight loss, asthenia and myalgia. Biology was a biological inflammatory syndrome [SIB], a creatinine 1 15p mol/1. The survey infectious and immunological balance were negative. The arteriography showed a strongly evocative of the NAP. We have seen no sign of poor prognosis. The recovery was spontaneous after a short period of evolution with an amendment clinical and biological weapons. The patient was put under anti-HTA and reviewed regularly to the consultation. An analogy is drawn between such developments and already reported in some cases of viral PAN. The actual frequency of self-limiting PAN is unknown. The scarcity of cases reported in the literature may in part be attributed to ignorance

Purification of cryptosporidium oocysts and Giardia Lamlia cysts using saccharose density gradients centrifugation

Cryptosporidium oocysts of Giardia lamblia cysts were separated from fecal contaminants by saccharose density layer centrifugation followed by low speed centrifugation. The filtrate of Cryptosporidium was concentrated on gradients with densities 1.04 and 1.09, while Giardia cysts were concentrated on 1.09 and 1.18. Decontamination by Na hypochlorite was useful only for Cryptosporidium oocysts as it was lethal for Giardia cysts. This method is simple and effective in preparing purified material for antigens, and as a source for maintenance of the cycle of Cryptosporidium in vivo or in vitro