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Search Results: 1 - 10 of 144406 matches for " Félicité Owona "
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Low Birth Weight in Perinatally HIV-Exposed Uninfected Infants: Observations in Urban Settings in Cameroon
Casimir Ledoux Sofeu, Josiane Warszawski, Francis Ateba Ndongo, Ida Calixte Penda, Suzie Tetang Ndiang, Georgette Guemkam, Nicaise Makwet, Félicité Owona, Anfumbom Kfutwah, Patrice Tchendjou, Ga?tan Texier, Maurice Tchuente, Albert Faye, Mathurin Cyrille Tejiokem, The ANRS-PEDIACAM study group
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0093554
Abstract: Background The consequences of maternal HIV infection for fetal growth are controversial. Here, we estimated the frequency of small for gestational age and gender (SGAG) among neonates born to HIV-infected or uninfected mothers and assessed the contribution, if any, of maternal HIV to the risk of SGAG. Methods The data used were obtained from the ANRS-Pediacam cohort in Cameroon. Pairs of newborns, one to a HIV-infected mother and the other to an uninfected mother, were identified during the first week of life, and matched on gender and recruitment site from 2007–2010. SGAG was defined in line with international recommendations as a birth weight Z-score adjusted for gestational age at delivery and gender more than two standard deviations below the mean (?2SD). Considering the matched design, logistic regression modeling was adjusted on site and gender to explore the effect of perinatal HIV exposure on SGAG. Results Among the 4104 mother-infant pairs originally enrolled, no data on birth weight and/or gestational age were available for 108; also, 259 were twins and were excluded. Of the remaining 3737 mother-infant pairs, the frequency of SGAG was 5.3% (95%CI: 4.6–6.0), and was significantly higher among HIV-infected infants (22.4% vs. 6.3%; p<.001) and lower among HIV-unexposed uninfected infants (3.5% vs. 6.3%; p<.001) than among HIV-exposed uninfected infants. Similarly, SGAG was significantly more frequent among HIV-infected infants (aOR: 4.1; 2.0–8.1) and less frequent among HIV-unexposed uninfected infants (aOR: 0.5; 0.4–0.8) than among HIV-exposed uninfected infants. Primiparity (aOR: 1.9; 1.3–2.7) and the presence of any disease during pregnancy (aOR: 1.4; 1.0–2.0) were identified as other contributors to SGAG. Conclusion Maternal HIV infection was independently associated with SGAG for HIV-exposed uninfected infants. This provides further evidence of the need for adapted monitoring of pregnancy in HIV-infected women, especially if they are symptomatic, to minimize additional risk factors for SGAG.
Land Use and Land Cover Change Analysis in Ajei Upland Watershed Community Forest, North West Region, Cameroon  [PDF]
Lucie Félicité Temgoua, Gordon Ajonina, Hans Berinyuy Woyu
Journal of Geoscience and Environment Protection (GEP) , 2018, DOI: 10.4236/gep.2018.69007
Abstract: This study was carried out in Ajei upland watershed community forest in the North West Region of Cameroon with the aim to analyze spatial and temporal dynamics of land cover and land use from 1988 to 2018 and to identify and characterize the agents, drivers and pressures of this change. The databases used were made up of 3 Lands at satellite images (5 TM of 1988, 7ETM+ of 2003 and 8OLI of 2018). Field survey, interview and focus group discussion methods were used to identify the activities carried out by the local population and to determine agents, drivers and pressures of land use and land cover change. The Ajei community forest is consisted of four main land cover namely; dense vegetation, sparse or degraded vegetation, savanna and bare soil. Between 1988 and 2018, the proportions of dense vegetation and savanna decreased and that of bare soil and sparse vegetation increased. Analysis showed ongoing deforestation with forest cover loss of about 240 ha in 30 years. For the considered time periods 1988-2003 and 2003-2018, deforestation rates were 1.83% per year and 1.49% per year respectively, signifying on average 8 hectares of forest cover undergoing conversion each year. This lost results from the actions of farmers, cattle grazers and wood extractors who through farming, grazing and lumbering activities pressurize and convert the dense forest cover. Economic motives notably the need to increase household income from a frequent demand for farm and wood products in nearby markets represent the drivers of forest cover change. Controlling grazing activities notably in the dry season to check out the use of fires, community sensitization especially among cattle headmen on the importance of the community forest, reforestation activities through natural regeneration or tree planting are needed in the forest.
Lipid Oxidation of Catfish (Arius maculatus) after Cooking and Smoking by Different Methods Applied in Cameroon  [PDF]
Noel Tenyang, Hilaire Macaire Womeni, Bernard Tiencheu, Nand Hrodrik Takugan Foka, Félicité Tchouanguep Mbiapo, Pierre Villeneuve, Michel Linder
Food and Nutrition Sciences (FNS) , 2013, DOI: 10.4236/fns.2013.49A1025

The influence of different cooking and smoking methods (boiling, frying, frying + boiling, hot and cold smoking) on oxidation and fatty acid composition of catfish (Arius maculatus) commercialized on the Wouri river coast was evaluated including commonly used analytical indexes (peroxide and acid values)and physical analysis by Fourier transform infrared (FTIR) spectroscopy. The mean moisture, protein, ash and fat contents of raw fish were 75.88 ± 0.55; 64.24 ± 0.14; 10.98 ± 0.31 and 23.02 ± 0.88 respectively. All these treatments provoke the modification of the quality indexes. Lipid deterioration, thermolysis and lipid oxidation occurred throughout the treatment. Peroxide value decreased for all cooked and smoked catfish, while free fatty acids of smoked sample increased. The FTIR applied to evaluate lipid oxidation in extracted lipid clearly provided a better picture of the oxidation progress and led to a similar conclusion with chemical analysis. Boiled, bleaching hot and bleaching cold smoking were found to be the suitable treatment methods for catfish because they gave it a high nutritive value compared to other smoking methods.

Prevalence and CT-Scan Presentations of Brain Malformations in Children at a University-Affiliated Mother and Child Hospital (Cameroon)  [PDF]
Boniface Moifo, Rosine Azegha Jiotsa, Seraphin Nguefack, Sandra Tatah, Evelyne Mah, Félicité Dongmo Nguefack, Elie Mbonda
Open Journal of Medical Imaging (OJMI) , 2017, DOI: 10.4236/ojmi.2017.74020
Abstract: Background: Brain malformations (BMs) are congenital abnormalities of the shape or structure of the brain, with corpus callosum agenesis known as the most frequent. Diagnosis of most BMs can be prenatal with ultrasound and fetal magnetic resonance imaging (MRI); post-natal diagnosis is based on transfontanellar ultrasound, CT-scan, and head MRI which is the imaging gold standard technique. MRI has been recently introduced and the CT-scan was previously the reference technique for the diagnosis of BMs in our context. Almost no publication has been made in sub-Saharan Africa on the clinical and CT scan characteristics of Brain malformations in children. Objective: The aim of this study was, in the absence of MRI, to describe the clinical and CT-scan presentations of brain malformations in children at the Yaounde Gynaeco-Obstetric and Pediatric Hospital (YGOPH). Patients and method: This was a cross-sectional descriptive study conducted from February to May 2016 at the YGOPH, including all children of 15-year-old and less with BM diagnosed on CT-scan at YGOPH between April 2006 and March 2016. The studied variables were clinical (age at diagnosis, sex, clinical manifestations) and CT findings (type of cerebral malformation). The data was analyzed using the SPSS 20.0 software with the estimation of hospital prevalence of BMs, frequencies and associations. The chi-square test was used to seek for an association between variables. The threshold of significance was p < 0.05. Results: The prevalence of BMs was 0.52%, with 29 cases of BMs identified out of 5590 patients followed up at the pediatric neurology outpatient unit over a period of 10 years. The mean age at diagnosis was 37.2 months (3.1 years) and the most represented age groups were 0 - 1 year (37.9%) and 1 - 5 years (37.9%). The sex ratio was 0.81 (55.2% girls). The clinical presentation was represented by neurological signs (93.1%) with convulsions (65.5%) and psychomotor retardation (58.8%) associated with skin lesions (34.5%) and/or facial dysmorphic features (27.6%). BM was suspected on antenatal ultrasound in 14.3% of cases (4/28). Abnormalities of cortical development accounted for 65.5% of BM followed by abnormalities of brain separation (31%). Tuberous sclerosis complex was the most common BM (31%) followed by agenesis of the corpus callosum (27.6%). The presence of dysmorphic facial features was associated (p = 0.007) with disorders of brain separation (DBS) while the presence of cutaneous lesions was
Spatio-Temporal Dynamic of Land Use and Land Cover in the Classified Forest of Djoli-Kera, South-Eastern, Chad  [PDF]
Lucie Félicité Temgoua, Behimnan Allaissem, Martin Tchamba, Goy Saradoum, Mbaiakambeye Mbaidje Osée, Marie Caroline Momo Solefack
Open Journal of Forestry (OJF) , 2018, DOI: 10.4236/ojf.2018.83019
Abstract: This study was carried out in the classified forest of Djoli-Kera found in the South-Eastern part of Chad. It aimed to analyze the spatial and temporal dy-namics of land cover between 1972 and 2013 and to determine the drivers of vegetation degradation. The databases used were made up of 4 Landsat satellite images (1MSS of 1972, 5TM of 1984, 7ETM+ of 1990 and 2010) and a spot 6 image of 2013, supplemented by field studies. Satellite images were processed using ENVI and ArcGIS software. Interview was used to identify the activities carried out by the local population. In 1972, the classified forest consisted of four types of land cover, the most important of which was open forest (51%), followed by wooded savannah (26%), tree savannah (21%) and sparse vegetation consisting of farms and fallows (2%). Gradually open forest and tree savannah disappeared. In 2013, the main types of land cover were shrub savannah (40%), sparse vegetation (28%), wooded savannah (12%), bare soil (12%) and dwellings (8%). Livestock, agriculture, wood collection and bushfires are perceived by local population as main drivers of forest cover change. Awareness-raising, monitoring and regulation of access to resources must be pursued, but also managers of the classified forest must accompany the local populations in the planting of trees and the setting up of more efficient farming systems to reduce pressure on the forest’s resources.
Aflatoxin Contamination in Food and Body Fluids in Relation to Malnutrition and Cancer Status in Cameroon
Angele N. Tchana,Paul F. Moundipa,Félicité M. Tchouanguep
International Journal of Environmental Research and Public Health , 2010, DOI: 10.3390/ijerph7010178
Abstract: Aflatoxins are food contaminants usually associated with hepatitis, immunodepression, impairment of fertility and cancer. The present work was to determine the presence of aflatoxins in eggs, milk, urine, and blood samples that were collected from various sources and periods; and hepatitis B virus antigen in blood samples. Aflatoxin was found in eggs (45.2%), cow raw milk (15.9%), breast milk (4.8%), urine from kwashiorkor and marasmic kwashiorkor children (45.5%), and sera from primary liver cancer patients (63.9%); HbsAg was also detected in 69.4% of the serum samples, but there was no association between both factors. Both AF and hepatitis B virus seem to be risk factors that could increase the incidence and prevalence rates of malnutrition and cancer in Cameroon.
Composition of Xylopia aethiopica (Dunal) A. Rich essential oils from Cameroon and identification of a minor diterpene: ent-13-epi manoyl oxide
Félicité Noudjou,Habiba Kouninki,Thierry Hance,Eric Haubruge
Biotechnologie, Agronomie, Société et Environnement , 2007,
Abstract: Xylopia aethiopica (Annonaceae) essential oil was extracted from fruits collected in four localities in Cameroon, and analysed by GC/MS and GC/FID. More than sixty compounds were identified with 47.5–84.0% of monoterpenes hydrocarbon, mainly b-pinene and b-phellandrene+1,8-cineole, 6.5–12.9% of oxygenated monoterpenes, 13.8–30.4% of sesquiterpenes, and 0.4–0.6 % of a minor unidentified diterpene. Trials of purification by column chromatography, followed by GC/MS and NMR analysis led to the identification of ent-13-epi manoyl oxide which is reported for the first time as a minor component in X. aethiopica essential oil.
Factors Influencing Routine Vaccination of Children of Mothers Live-Stock Retailers in the Markets of Yaoundé  [PDF]
Nguefack Dongmo Félicitée, Tassadong Christiane, Dongmo Roger, Tatah Sandra, Fodoung Wamba Danny Stève, Chiabi Andreas, Kago Innocent, Kobela Marie
World Journal of Vaccines (WJV) , 2016, DOI: 10.4236/wjv.2016.62004
Abstract: Background: The job of mothers though having a positive impact on the family could be detrimental to children’s health due to her unavailability. Methodology: A cross-sectional study was carried out from March to August 2014. Mothers of children aged 11 - 48 months were interviewed to determine factors which could influence the vaccination of their children. Results: A total of 265 mothers were interviewed. Despite their occupations, they completely vaccinated all of their children. The vaccination coverage of tracer antigens (third dose of DPT/HiB/HepB) was high 97.7% as well as the proportion of children completely vaccinated (91.7%). A mastery of the vaccination calendar of the site, and resumption of activities when the children were more than 4 months old, significantly influenced the completion of vaccination. Only 6 children (2.3%) were not correctly or incompletely vaccinated. The reason given by their mothers were: the lack of time (45.0%), the adverse effects of vaccines (27.0%), forgetfulness (18%), and shortage of vaccines supplies (5.0%). Conclusions: Occupation was not a hindrance to the vaccination of children of live-stock retailers. The problem of absent or incomplete vaccination could be overcome by improving the strategies of social mobilisation, permitting the sensitisation of mothers hesitant to vaccinate their children. A regular supply of vaccines will reduce the missed opportunities, thus maintaining high vaccination coverage in this social group.
Neurodevelopmental Problems in Children at 9 Months of Age Associated with Neonatal Hypoxic-Ischemic Encephalopathy  [PDF]
Evelyn Mungyeh Mah, Seraphin Nguefack, Hélène Kamo Selangai, Andréas Chiabi, Mbassi Awa, Félicité Dongmo, Mazou Ngou Temgoua, Elie Mbonda
Open Journal of Pediatrics (OJPed) , 2017, DOI: 10.4236/ojped.2017.72013
Abstract: Introduction: Neonatal asphyxia is a major cause of infant morbidity in Cameroon. The aim of this study was to describe the short-term neurological outcome of children following neonatal Hypoxic-ischemic encephalopathy (HIE). Methodology: We conducted a retrospective cohort study from May 2010 to September 2013. We included 39 exposed cases against 78 non-exposed cases followed-up for at least 9 months. The variables studied were: age, sex, head circumference, neurological sequelae, postural anomalies and motor skills and developmental age/quotient. The data collected were analyzed using Epi info software version 3.5.3. The Fisher Exact Test was used to compare the variables with a significance threshold defined for p < 0.05. Results: We recruited 39 cases for 78 controls. The majority (74.40%) of cases were classified as HIE Sarnat 3 and 25.60% Sarnat 2. Most of the children were aged 12 - 36 months with a mean age of 18 months. The male sex was predominant with a sex ratio of 1.2; and 61.50% of children with HIE had head circumference < -2 Zscore. Thirtyone (79.50%) of the exposed cases developed a handicap against 2 (2.60%) in the control group. The handicaps were 61.54% severe, 10.26% moderate and 7.70% mild. The main sequelae were mental retardation (66.70%), cerebral palsy (46.20%) and epilepsy (30.80%). The associated anomalies were microcephaly and bucco facial dyspraxia. The neurosensory disorders consisted of blindness (41%), oculomotor disorders (18%) and deafness (7.70%). The mean developmental quotient in the cases was 49.59%. Conclusion: The frequency of neurological sequelae following HIE was high in our series. Efforts should be made to prevent perinatal asphyxia and to ensure the availability of material and staff trained to help babies’ breath in all the delivery rooms in our maternities.
Prevalence and Risk Factors of Peripheral Artery Disease in a Group of Apparently Healthy Young Cameroonians: A Cross-Sectional Study  [PDF]
Félicité Kamdem, Yacouba Njankouo Mapoure, Ba Hamadou, Fanny Souksouna, Ahmadou Musa Jingi, Caroline Kenmegne, Fernando Kemta Lekpa, Jaff Fenkeu Kweban, Gisèlei Mandy, Jean Pierre Nda Mefo’o, Henry Luma, Marie Solange Doualla
World Journal of Cardiovascular Diseases (WJCD) , 2018, DOI: 10.4236/wjcd.2018.82011
Background: The?burden of peripheral artery disease (PAD) is not well known among apparently healthy people in Africa. Aim: To determine the prevalence and associated risk factors of PAD in a group of blood donors seen at the Douala General HospitalCameroon. Methods: Between 1st November 2015 and 30th April 2016, we carried out a cross-sectional study. Participants were consenting adults of both sexes, aged ≥ 21 years who presented for blood donation, and were tested HIV negative. We collected socio-demographic data and their past history. We carried out a physical examination and measured their Ankle-Brachial Index (ABI). We defined PAD as an ABI < 0.9. We also measured their fasting blood glucose and lipid profile. Results: We recruited 103 participants, 55.4% males. The mean age was 33 ± 10 years. The mean ABI on left and right leg was 1.04 ± 0.1 and 1.02 ± 0.1respectively. ABI was higher in males than females both legs (p < 0.05). PAD was seen in 11 (10.7%) participants. This was higher in females than males (3.6% versus 19.2%, p = 0.026). Among those with PAD, 8 (72.7%) were asymptomatic (Males: 100% versus Females: 66%, p
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