S Nko’o Amvene
University of Yaoundé
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Featured researches published by S Nko’o Amvene.
Journal De Radiologie | 2004
S Nko’o Amvene; M. Dehayem Yefou; J Mbo Amvene; J. P. Amana; M. Biwole Sida; W.F.T. Muna
Resume Objectifs Bien que la motilite vesiculaire puisse jouer un role non negligeable dans la lithogenese, elle a ete peu etudiee dans les populations africaines. Nous avons evalue son role dans la lithogenese vesiculaire du sujet noir camerounais en mesurant la vidange vesiculaire stimulee par un repas gras dans un groupe de sujets avec et sans lithiase. Materiels et Methodes Quinze sujets lithiasiques et trente temoins normaux regroupes en deux pools ont ete etudies. La vidange vesiculaire, stimulee par un repas gras de 610 et 740 Kcal a ete mesuree durant 120 mn par echographies seriees. Resultats Le volume vesiculaire moyen a jeun des sujets lithiasiques etait significativement plus eleve que celui des temoins, et la vidange vesiculaire des sujets lithiasiques etait significativement plus faible que celle des sujets sans lithiase. En outre, ceux-ci avaient des valeurs plus elevees que celles relevees chez les caucasiens. Deux groupes de sujets lithiasiques ont ete identifies ; un premier avec une hypomotilite vesiculaire mais un volume vesiculaire a jeun normal et un second avec une vidange vesiculaire normale, mais un volume vesiculaire a jeun significativement plus eleve que les temoins. Conclusion L’hypomotilite vesiculaire et/ou l’augmentation du volume vesiculaire a jeun, pourraient etre des facteurs de lithogenese chez le sujet noir. L’hypomotilite vesiculaire semble ne jouer un role que chez le sujets lithiasiques avec volume vesiculaire a jeun normal.PURPOSE Gallbladder hypomotility could play a significant role in the process of lithogenesis, but this role has yet to be defined in black African populations. This role was assessed by measuring gallbladder emptying after stimulation by a fat meal in a group of black African subjects with and without cholelithiasis. MATERIALS AND METHODS Fifteen subjects with cholelithiasis and thirty controls divided in two pools were studied. Gallbladder emptying was stimulated by fat meals of 610 and 740 Kcal, and was measured with ultrasound for a period of 120 min. RESULTS The mean fasting gallbladder Volume of the subjects with lithiasis was significantly superior to that of the controls. Compared to what has been previously published in Caucasian subjects, gallbladder emptying was generally more rapid in our study. Further more, gallbladder emptying was significantly better in the control group than in the group of subjects with cholelithiasis. Two groups of subjects with cholelithiasis were isolated. The first group had poor gallbladder emptying and normal fasting gallbladder Volume; the second had normal gallbladder emptying but significantly increased fasting gallbladder Volume. CONCLUSION Impaired gallbladder emptying and/or increased fasting gallbladder Volume probably play a role in lithogenesis. Hypomotility seems to play a significant role only for those subjects with normal fasting gallbladder Volume.
Bulletin De La Societe De Pathologie Exotique | 2012
P. Ongolo-Zogo; N. Nkodo Mbia; T.L. Mvogo Minkala; M. Biwole Sida; C. Kouanfack; S Nko’o Amvene
The association between sonographic liver steatosis and clinical lipodystrophy in AIDS patients treated by highly active antiretroviral therapy (HAART) has been studied. We conducted a cross-sectional study reviewing medical files of 117 AIDS patients followed up in Yaounde, Cameroon (6.3 F/1 M, mean age = 40 ± 9.4 years), and treated the patients with HAART protocol comprising stavudine or zidovudine for at least six months. All participants underwent abdominal ultrasonography and anthropometric assessment including body mass index (BMI). Data analysis included determining the association between sonographic liver steatosis, clinical lipodystrophy, and other clinical and biological data using the ¢(2) test, and the calculation of odd ratio. Fifty-one patients presented clinical lipodystrophy. The sonographic prevalence of hepatomegaly and splenomegaly was 70.1% and 25.6%, respectively. The overall prevalence of sonographic steatosis was 28.2%; specifically 37.3% among lipodystrophic patients and 21.1% among nonlipodystrophic patients (P = 0.03). According to the type of lipodystrophy, the prevalence was 40.6% among lipohypertrophic patients, 38.5% among lipodystrophic patients, and 16.7% among lipoatrophic patients. Clinical lipohypertrophy was statistically associated with a higher prevalence of sonographic steatosis (odd ratio = 2.5; 95% CI: [1.01-6.39], and P = 0.04). HAART protocol including stavudine was associated with lipodystrophy. The prevalence of sonographic liver steatosis is high among AIDS patients under HAART and is associated with lipohypertrophy.
Bulletin De La Societe De Pathologie Exotique | 2012
P. Ongolo-Zogo; N. Nkodo Mbia; T.L. Mvogo Minkala; M. Biwole Sida; C. Kouanfack; S Nko’o Amvene
The association between sonographic liver steatosis and clinical lipodystrophy in AIDS patients treated by highly active antiretroviral therapy (HAART) has been studied. We conducted a cross-sectional study reviewing medical files of 117 AIDS patients followed up in Yaounde, Cameroon (6.3 F/1 M, mean age = 40 ± 9.4 years), and treated the patients with HAART protocol comprising stavudine or zidovudine for at least six months. All participants underwent abdominal ultrasonography and anthropometric assessment including body mass index (BMI). Data analysis included determining the association between sonographic liver steatosis, clinical lipodystrophy, and other clinical and biological data using the ¢(2) test, and the calculation of odd ratio. Fifty-one patients presented clinical lipodystrophy. The sonographic prevalence of hepatomegaly and splenomegaly was 70.1% and 25.6%, respectively. The overall prevalence of sonographic steatosis was 28.2%; specifically 37.3% among lipodystrophic patients and 21.1% among nonlipodystrophic patients (P = 0.03). According to the type of lipodystrophy, the prevalence was 40.6% among lipohypertrophic patients, 38.5% among lipodystrophic patients, and 16.7% among lipoatrophic patients. Clinical lipohypertrophy was statistically associated with a higher prevalence of sonographic steatosis (odd ratio = 2.5; 95% CI: [1.01-6.39], and P = 0.04). HAART protocol including stavudine was associated with lipodystrophy. The prevalence of sonographic liver steatosis is high among AIDS patients under HAART and is associated with lipohypertrophy.
Journal De Radiologie | 2006
R. Ndjock Ndjock; I. Hartmann; S Nko’o Amvene; J. Rémy; M. Rémy-Jardin
Objectifs Le but de ce travail etait de recenser les differentes etiologies sous-jacentes des hemoptysies a partir des donnees tomodensitometriques et de determiner la capacite du scanner multicoupe a localiser le saignement endobronchique et a detecter l’hypervascularisation arterielle bronchique et non bronchique. Materiels et methodes Du 1 er septembre 2004 au 31mai 2005, 48 patients avec hemoptysies (28 hommes et 20 femmes d’âge compris entre 16 et 83 ans) ont ete recus dans le service de radiologie de l’hopital Albert Calmette de Lille. L’examen tomodensitometrique consistait en une acquisition spiralee a l’aide d’un scanner muni de 64 barrettes type Somatom de Siemens, avec injection d’emblee d’un produit de contraste iode non ionique (omnipaque 300). Resultats Les etiologies detectees sont constituees par les BPCO (n = 15), les bronchectasies (n = 5), les masses tumorales hilomediastinales (n = 5), les infections pulmonaires aigues (n = 3), l’aspergillome intra cavitaire (n = 2), la sequestration pulmonaire (n = 1), l’embolie pulmonaire aigue (n = 1), l’hematome de la paroi d’un anevrysme aortique (n = 1), sequelles d’aspergillose invasive pulmonaire (n = 1). Le scanner a detecte dans 67 % les stigmates du saignement endobronchique et a localise le site originel du saignement endobronchique dans 48 %. Un etat d’hypervascularisation bronchique a ete retrouve chez 14 patients. Conclusion L’angioscanographie multicoupe thoracique apparait comme un outil performant et du bilan lesionnel optimal des hemoptysies.
Journal De Radiologie | 2005
S Nko’o Amvene; S. Ndongo; P. Ongolo Zogo; M. Biwole Sida
Objectifs Decrire les lesions echographiques abdominales chez les patients sous traitement antiretroviral (ARV) et les comparer aux lesions visibles chez les patients avant initiation du traitement ARV. Materiels et methodes Il s’agit d’une etude transversale et descriptive. La population etait composee de 112 sujets VIH-positifs sous traitement ARV durant une periode comprise entre 6 et 12 mois (Gl) et de 107 patients VIH-positifs en instance de traitement ARV (G2). La distribution selon le sexe, l’âge, les caracteristiques socio-economiques, la prophylaxie au cotrimoxazole etaient similaires dans les deux groupes. Chaque sujet a eu un examen clinique, une echographie abdominale et un bilan biologique (serologie VIH, CD4, transaminases, creatinemie). Resultats La moyenne d’âge etait de 38 ans et le sex-ratio F/H de 1,7 dans les 2 groupes. Quatre-vingt-quatorze pour cent des patients du Gl etaient classes SIDA contre 92 dans le G2. Les lesions hepatiques et spleniques, les adenopathies etaient significativement moins frequentes dans le Gl. Mais ce groupe avait une frequence accrue de lithiases biliaires et renales. Les lesions pancreatiques etaient rares dans les 2 groupes. La distribution des lesions n’etait pas influencee par la prophylaxie au cotrimoxazole. Conclusion Les patients sous ARV ont une diminution globale de la frequence des lesions echographiques abdominales. Toutefois, ce traitement pourrait favoriser la survenue de lithiases biliaires et renales. Ces resultats demandent a etre confirmes par une etude de cohorte sur une grande serie.
HEALTH SCIENCES AND DISEASES | 2017
Jérémie Mbo Amvene; J Daoba; B Soumayah; J Kouong; U Kueté Fomekong; S Nko’o Amvene
HEALTH SCIENCES AND DISEASES | 2017
J Mbo Amvene; B Djonyang; Jc Mballa Amougou; D Ngaroua; S Nko’o Amvene
HEALTH SCIENCES AND DISEASES | 2016
J Mbo Amvene; C Hountie; Jean Claude Amougou Mballa; N Ngaroua; S Nko’o Amvene
/data/revues/02210363/v90i10/S0221036309758433/ | 2010
P. Ongolo-Zogo; N. Nkodo Mbia; T.L. Mvogo Minkala; M. Biwole Sida; S Nko’o Amvene
Journal De Radiologie | 2009
S Nko’o Amvene; M. Nkam; M. Biwole Sida; P. Ongolo-Zogo