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Background: Malaria is one of the most important diseases in Republic of Congo with 47.9% of outpatients visit for 64.8% admissions. The rise of antimalarial resistant strains requires the active search of new active compounds and medicinal plants can be an alternative. From an ethnobotanical survey a list of plants with antimalarial reputations was drawn up, including Rauvolfia vomitoria. Aim: The objective of this study is to see if we can validate the supposed activity of Rauvolfia vomitoria and its toxicity. Material and Methods: Rauvolfia vomitoria leaves have been collected, dried and sprayed. Leaves powder were macerated in distilled water for 24 hours. Another part of leaves powder were macerated for 24 hours successively in hexane, dichloromethane, mix of diclhoromethane: methanol (v:v) and methanol. The crude extracts were prepared and tested for antiplasmodial activity on NF54 strains and field isolates with the SYBR Green I-based in vitro assay technique. The extracts with the best antiplasmodial activities were used on rats for acute toxicity. Results: All Rauvolfia vomitoria leaves extracts have shown a very good antiplasmodial activity (0.63 CI50 20.19

Background: Malaria is one of the most important diseases in Republic of Congo with 47.9% of outpatients visit for 64.8% admissions. The rise of antimalarial resistant strains requires the active search of new active compounds and medicinal plants can be an alternative. From an ethnobotanical survey a list of plants with antimalarial reputations was drawn up, including Rauvolfia vomitoria. Aim: The objective of this study is to see if we can validate the supposed activity of Rauvolfia vomitoria and its toxicity. Material and Methods: Rauvolfia vomitoria leaves have been collected, dried and sprayed. Leaves powder were macerated in distilled water for 24 hours. Another part of leaves powder were macerated for 24 hours successively in hexane, dichloromethane, mix of diclhoromethane: methanol (v:v) and methanol. The crude extracts were prepared and tested for antiplasmodial activity on NF54 strains and field isolates with the SYBR Green I-based in vitro assay technique. The extracts with the best antiplasmodial activities were used on rats for acute toxicity. Results: All Rauvolfia vomitoria leaves extracts have shown a very good antiplasmodial activity (0.63 CI50 20.19

Mycoplasma hyopneumoniae is a primary agent associated with mycoplasma pneumonia and the porcine respiratory disease complex (PRDC). Various reports have indicated that different strains of M. hyopneumoniae are circulating in the swine population. Lysates from lung swabs from naturally infected pigs of different ages were tested according to a new variable number of tandem repeats (VNTR) genetic typing method based on the polyserine repeat motif of the P146 lipoproteoadhesin, which can be applied directly on clinical material without isolation of M. hyopneumoniae. The aim was to determine the diversity of M. hyopneumoniae isolates from conventional farrow-to-finish pig farms located in different geographical areas of Serbia. PCR amplification was carried out using M. hyopneumoniae-specific designed, conserved primers (p146MH - L and p146MH - R) flanking the region encoding the repeat motif, followed by sequencing and cluster analysis. Five groups of M. hyopneumoniae with thirteen to twenty-four serine repeats were observed. Analysis of three samples from each farm indicated that the specific isolate is ubiquitous in pigs of different ages. Furthermore, seven clusters were observed within 27 tested samples. The results indicated a considerable diversity among M. hyopneumoniae field isolates in the swine population from conventional farrow-to-finish farms in Serbia and suggest close genetic relatedness of the corresponding isolates.