Evolution of African cassava mosaic virus by recombination between bipartite and monopartite begomoviruses

<p>Abstract</p> <p>Background</p> <p>Cassava mosaic disease (CMD) is a major constraint on cassava cultivation in Africa. The disease is endemic and is caused by seven distinct cassava mosaic geminiviruses (CMGs), some of them including several variants.</p> <p>Findings</p> <p>From cassava leaf samples presenting CMD symptoms collected in Burkina Faso, four DNA-A begomovirus components were cloned and sequenced, showing 99.9% nucleotide identity among them. These isolates are most closely related to <it>African cassava mosaic virus </it>(ACMV) but share less than 89% nucleotide identity (taxonomic threshold) with any previously described begomovirus. A DNA-B genomic component, sharing 93% nucleotide identity with DNA-B of ACMV, was also characterized. Since all genomic components have a typical genome organization of Old World bipartite begomoviruses, this new species was provisionally named African cassava mosaic Burkina Faso virus (ACMBFV). Recombination analysis of the new virus demonstrated an interspecies recombinant origin, with major parents related to West African isolates of ACMV, and minor parents related to <it>Tomato leaf curl Cameroon virus </it>and <it>Cotton leaf curl Gezira virus</it>.</p> <p>Conclusion</p> <p>This is the first report of an ACMV-like recombinant begomovirus arisen by interspecific recombination between bipartite and monopartite African begomoviruses.</p

Penile fracture in burkina faso: our experience on the management of 21 cases

Abstract Background Penile fracture is relatively a rare urological emergency and has been the topic of a few publications in the literature through clinical cases or case series. Despite this relative scarcity, it is increasingly reported as one of the andrological emergencies in Burkina Faso. The purpose of this study was to report our experience of the management of such andrological emergency in the two main university teaching hospitals of Burkina Faso. Methods This was a cross-sectional study, including retrospectively patients managed for a penile fracture between January 2016 and September 2021, and having a minimum postoperative follow-up of 6 months. The literature review was performed by analyzing the content of the following documents: consultation logs, patient records, operative report protocol. The parameters studied were age, mechanism of occurrence, clinical data, delay of management, operative technique and functional and morphological results after surgery. Erectile function was assessed by the IIEF5 score and rigidity by the EHS scale. Results Among the 24 cases of penile fracture, 21 patients were included with a median age of 32.7 ± 5.74 years (23–43 years). The most common mechanism was a coital misstep or coitus interruptus (14 patients or 66.7%). Forced self-manipulation/masturbation was noted in 4 cases (19%), and direct trauma to the penis was noted in 3 cases (14.3%). Urethrorrhagia was reported by 5 patients. The mean delay of management was 65 h (6–432 h). The main sign found was the painful swelling of the penis with an “eggplant” appearance. The surgical approach was a circumferential balanopreputial incision in all our patients. Involvement of the spongy body and urethra associated with involvement of the cavernous body was noted in 4 patients, with a single case of spongy body and urethral involvement. The mean length of hospital stay was 3 days. Postoperatively, erectile dysfunction was noted in 6 patients. A palpable nodule at the penis was observed in 12 patients. No patient reported curvature of the penis. Conclusion Penile fracture is a clinical diagnosis requiring early exploration and surgical repair to ensure better functional and morphological outcomes

Les migrations subsahariennes

Ce dossier réalisé en collaboration avec le GRDR couvre trois volets des migrations subsahariennes : la diversité des flux qui concernent ici essentiellement l'Afrique de l'Ouest, la complexité de la présence africaine sur le territoire français et les conséquences de ces migrations sur le développement des pays d'origine