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1.
Fungal Genet Biol ; 150: 103541, 2021 05.
Artículo en Inglés | MEDLINE | ID: mdl-33639303

RESUMEN

In this study, we investigated to possible role of Ras2 in Fusarium circinatum- a fungus that causes pine pitch canker disease on many different pine species and has a wide geographic distribution. This protein is encoded by the RAS2 gene and has been shown to control growth and pathogenicity in a number of fungi in a mitogen-activated protein kinase- and/or cyclic adenosyl monophosphate pathway-dependent manner. The aim was therefore to characterize the phenotypes of RAS2 gene knockout and complementation mutants of F. circinatum. These mutants were generated by transforming protoplasts of the fungus with suitable split-marker constructs. The mutant strains, together with the wild type strain, were used in growth studies as well as pathogenicity assays on Pinus patula seedlings. Results showed that the knockout mutant strain produced significantly smaller lesions compared to the complementation mutant and wild type strains. Growth studies also showed significantly smaller colonies and delayed conidial germination in the knockout mutant strain compared to the complement mutant and wild type strains. Interestingly, the knockout mutant strain produced more macroconidia than the wild type strain. Collectively, these results showed that Ras2 plays an important role in both growth and pathogenicity of F. circinatum. Future studies will seek to determine the pathway(s) through which Ras2 controls these traits in F. circinatum.


Asunto(s)
Fusarium/genética , Fusarium/patogenicidad , Esporas Fúngicas/crecimiento & desarrollo , Esporas Fúngicas/genética , Proteínas ras/genética , Fusarium/crecimiento & desarrollo , Técnicas de Inactivación de Genes , Genoma Fúngico , Mutación , Pinus/microbiología , Enfermedades de las Plantas/microbiología , Virulencia , Factores de Virulencia/genética , Proteínas ras/clasificación
2.
J Public Health Afr ; 11(1): 1214, 2020 Apr 29.
Artículo en Inglés | MEDLINE | ID: mdl-33209234

RESUMEN

The Yaoundé Gynaeco-Obstetric and Pediatric Hospital (YGOPH) faced challenges of high debts and sub-optimal care delivery. Performance-Based-Management (PBM) provides an environment of checks and balances, increased transparency, competition and autonomy, thereby improving clinical as well as financial indicators. We describe the transition from resource-based to PBM at the YGOPH over a seven-year period. There was an increase of 4.5% in OB/GYN and 8.1% in prenatal consultations, 8.4% in C-sections, 6.1% of children vaccinated, and 30.5% of women seen for family planning, 51.1% of people living with the Human Immunodeficiency Virus on treatment and 29.4% of indigent patients. These results occurred in spite of a 14% reduction in staff. Annual revenue increased by 5.75%. The share of hospital income from care on overall hospital revenue increased from 55.11% to 60.00%. With this self-financing PBM model, the hospital remains a social, humane and financially viable structure delivering improved quality care.

3.
Pan Afr Med J ; 33: 90, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31489068

RESUMEN

INTRODUCTION: Syphilis rapid test results may be influenced by numerous environmental and genetic factors. METHODS: The proportion of false positive syphilis non-treponemal (NT) and treponemal (T) test results using immuno-chromatographic dual syphilis rapid test on serum from Cameroonian blacks (n=103) versus French blacks (n=104) or French caucasians (n=51), all HIV-negative and free of clinical syphilis, was examined. RESULTS: Black individuals in Cameroon had a significantly higher frequency of false positive NT or T tests than black individuals in France. black individuals in France had a higher frequency of indeterminate NT tests as compared to caucasians in France. CONCLUSION: Both racial and environmental factors may affect immuno-chromatographic dual syphilis rapid testing.


Asunto(s)
Antígenos Bacterianos/inmunología , Serodiagnóstico de la Sífilis/métodos , Sífilis/diagnóstico , Treponema pallidum/inmunología , Población Negra , Camerún , Reacciones Falso Positivas , Francia , Humanos , Estudios Prospectivos , Sífilis/inmunología , Población Blanca
4.
Case Rep Obstet Gynecol ; 2017: 9763470, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28593059

RESUMEN

Necrotising fasciitis is a rare but potentially lethal condition in obstetrics which usually presents with fulminant tissue destruction and a resultant high mortality. We report a 19-year-old Sub-Saharan female diagnosed with a rapidly erosive necrotising fasciitis on day 5 after caesarean section in a resource-limited setting. Timely diagnosis, aggressive antibiotic therapy, and prompt surgical intervention via an extensive abdominal wall debridement were pivotal to her survival.

5.
PLoS One ; 12(2): e0172860, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28234990

RESUMEN

BACKGROUND: The enormous challenge to maternal well-being with associated maternal wastages during labour has remained an unsurmountable problem in Cameroon which reflects the current high maternal mortality rate. Evidence abounds that cost-effective and affordable health interventions like the use of the partograph will contribute to curb the alarming number of intrapartum maternal deaths. However, little is known about the level of knowledge and utilization of this simple life-saving tool in the North-and South-West Regions, Cameroon. METHODS: Using a self-administered structured questionnaire, a cross-sectional study was conducted from January 4th-March 25th 2016 among non-physician obstetric care providers (OCPs) across urban public health institutions in these regions. Logistic regression models were used to identify factors associated with good knowledge and routine utilization of the partograph. RESULTS: Of the 79 eligible participants, 71 (89.9%) took part in the study. The mean age of the respondents was 37.9±10.0 years with majority being female (85.9%). Less than one-third (29.6%) of the respondents had good knowledge on the partograph and only 23 (32.4%) routinely used it in monitoring labour. OCPs working in Maternal and Infant Welfare Clinics were about 4 times more likely than those working in Regional/District Hospitals to have good knowledge on the partograph [AOR = 3.88 (95% CI:1.07-14.04)], p = 0.04. Little or no knowledge of the partograph and poor staff strength in the study centres were factors militating against its routine use. CONCLUSIONS: The knowledge and use of the partograph in this study is sub-optimal. Regular in-service training of OCPs superimposed with periodic workshops and seminars, provision of reasonable staff numbers, and mandatory institutional policies on routine use of the partograph are recommended as vital first steps towards ensuring the safety of women in labour in the North-and South-West Regions of Cameroon.


Asunto(s)
Mortalidad Materna , Monitoreo Fisiológico/métodos , Complicaciones del Trabajo de Parto/prevención & control , Obstetricia/organización & administración , Salud Pública/métodos , Adulto , Camerún , Análisis Costo-Beneficio , Estudios Transversales , Femenino , Humanos , Capacitación en Servicio , Masculino , Persona de Mediana Edad , Partería , Obstetricia/métodos , Embarazo , Administración en Salud Pública , Clase Social
6.
PLoS One ; 12(2): e0172102, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28199373

RESUMEN

BACKGROUND: In 2010, an estimated 141 new HIV infections occurred per day in Cameroon and reports suggest an upsurge of these rates by 2020 if current trends continue. Mother-to-child transmission (MTCT) of HIV is a major public health challenge, and maternal knowledge on HIV transmission during pregnancy and its prevention is important in curtailing paediatric HIV acquisition. OBJECTIVES: We aimed at establishing the prevalence of maternal HIV infection as well as assessing knowledge on HIV, MTCT and prevention of MTCT (PMTCT) of HIV among pregnant women in a rural area of Cameroon. METHODS: This study was conducted in two phases: a 29 month retrospective analysis of 1866 deliveries within three rural health facilities in the Babessi sub-division, Northwest Cameroon and a 1 month prospective phase wherein 150 consenting pregnant women attending antenatal care (ANC) at the study centres were consecutively recruited. RESULTS: Overall, the prevalence of maternal HIV infection was 5.0% (100/2016). All (100%) of the interviewed pregnant women were aware of HIV infection and most (76.7%) had adequate knowledge on its routes of transmission. Meanwhile, only 79.3% (119/150) of them were aware of MTCT with slightly above a third (37.0%) having adequate knowledge on the periods of transmission. The proportions of women correctly stating: during pregnancy, during labour/delivery and during breastfeeding as possible periods of MTCT of HIV were 63.0%, 60.5% and 89.1% respectively. A majority (76.3%) of these women had inadequate knowledge on PMTCT of HIV. CONCLUSION: The overall prevalence of maternal HIV warrants strengthening of current intervention strategies including scaling-up of PMTCT measures. Among others, intensification of HIV-related ANC services to improve the pregnant women's awareness and knowledge on MTCT and its prevention are vital steps in curbing the growing burden of paediatric HIV.


Asunto(s)
Infecciones por VIH/epidemiología , Conocimientos, Actitudes y Práctica en Salud , Mujeres Embarazadas/psicología , Adolescente , Adulto , Lactancia Materna , Camerún/epidemiología , Demografía , Femenino , Infecciones por VIH/transmisión , Humanos , Transmisión Vertical de Enfermedad Infecciosa/prevención & control , Educación del Paciente como Asunto , Embarazo , Atención Prenatal , Prevalencia , Estudios Retrospectivos , Población Rural , Adulto Joven
7.
BMC Infect Dis ; 16(1): 417, 2016 Aug 15.
Artículo en Inglés | MEDLINE | ID: mdl-27526941

RESUMEN

BACKGROUND: Paediatric cervicofacial actinomycosis is a rare infectious disease caused by Actinomyces spp. and usually presents as a chronic, suppurative and granulomatous inflammation with a propensity to mimic malignant conditions. CASE PRESENTATION: We discuss the case of an 11-year-old African female who presented with a chronic disfiguring cervical mass evolving over a 9 months period for which she had several unyielding consultations. Appropriate clinical and para-clinical evaluations were paramount to the diagnosis of an Actinomyces infection. We review the literature on its epidemiology, clinical presentation, diagnosis, treatment and prognosis. CONCLUSION: Actinomycosis still poses a diagnostic challenge. It is important for clinicians to consider the possibility of such rare infections in apparently malignant looking masses and also in lesions not responding to several antimicrobial treatments. The condition generally carries a good prognosis if recognised early and histopathological diagnosis is the gold standard.


Asunto(s)
Actinomicosis Cervicofacial/diagnóstico , Actinomicosis Cervicofacial/tratamiento farmacológico , Actinomicosis Cervicofacial/cirugía , Administración Intravenosa , Antibacterianos/uso terapéutico , Niño , Diagnóstico Diferencial , Ertapenem , Femenino , Humanos , Penicilinas/uso terapéutico , Pronóstico , beta-Lactamas
8.
J Med Case Rep ; 10(1): 129, 2016 May 26.
Artículo en Inglés | MEDLINE | ID: mdl-27225444

RESUMEN

BACKGROUND: Foreign bodies are a rare cause of appendicitis. In most instances, ingested foreign bodies pass through the alimentary tract asymptomatically. However, those that enter the lumen of the vermiform appendix may not be able to re-enter the colon and may initiate an inflammatory process. We report a case of acute appendicitis induced by an unusual foreign body. CASE PRESENTATION: A 26-year-old Sub-Saharan woman presented with right iliac fossa pain and tenderness. She underwent an open appendectomy which revealed a condom fragment within the appendiceal lumen. A detailed retrospective history confirmed accidental ingestion of the condom 2 weeks prior to onset of symptoms. CONCLUSIONS: Although a rare finding, a variety of foreign bodies can be lodged in the appendix and may instigate an inflammatory process. There is a need to increase awareness of the potential dangers of ingested foreign bodies.


Asunto(s)
Apendicectomía , Apendicitis/cirugía , Apéndice/cirugía , Condones , Cuerpos Extraños/cirugía , Enfermedad Aguda , Adulto , Apendicitis/etiología , Femenino , Cuerpos Extraños/complicaciones , Humanos
9.
BMC Res Notes ; 9: 98, 2016 Feb 16.
Artículo en Inglés | MEDLINE | ID: mdl-26880002

RESUMEN

BACKGROUND: An unsafe abortion is defined as a procedure for terminating an unintended pregnancy carried out either by a person lacking the necessary skills or in an environment that does not conform to minimal medical standards or both. Majority of these unsafe abortions are carried out in rural areas of developing countries, usually by unskilled persons who do not have proper knowledge of the anatomy of reproductive organs and in unhygienic environments thus leading to various complications. CASE PRESENTATION: We discuss the case of a 21 year old female who presented in septic shock after she underwent an unsafe abortion of an 11 weeks pregnancy with uterine wall perforation and bowel injury that required resection. CONCLUSION: Unsafe abortion is an important public health problem which accounts for a significant cause of maternal mortality and morbidity in resource poor countries. A high index of suspicion of clandestine abortion with ensuing complications should prevail when faced with a woman of child bearing age with the triad of vaginal bleeding, amenorrhea and pelvic sepsis.


Asunto(s)
Aborto Inducido/efectos adversos , Intestinos/patología , Población Rural , Perforación Uterina/etiología , Femenino , Hemoperitoneo/patología , Humanos , Infarto , Necrosis , Embarazo , Adulto Joven
10.
Afr Health Sci ; 14(3): 517-25, 2014 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-25352867

RESUMEN

BACKGROUND: The fourth Millennium Development Goals targets reduction of the mortality rate of under-fives by 2/3 by the year 2015. This reduction starts with that of neonatal mortality representing 40% of childhood mortality. In Cameroon neonatal mortality was 31% in 2011. OBJECTIVES: We assessed the trends, associated factors and causes of neonatal deaths at the Yaounde Gynaeco-Obstetric and Pediatric Hospital. METHODS: The study was a retrospective chart review. Data was collected from the hospital records, and included both maternal and neonatal variables from 1(st) January 2004 to 31(st) December 2010. RESULTS: The neonatal mortality was 10%. Out-borns represented 49.3% of the deceased neonates with 11.3% born at home. The neonatal mortality rate followed a downward trend dropping from 12.4% in 2004 to 7.2% in 2010. The major causes of deaths were: neonatal sepsis (37.85%), prematurity (31.26%), birth asphyxia (16%), and congenital malformations (10.54%). Most (74.2%) of the deaths occurred within the first week with 35% occurring within 24 hours of life. Mortality was higher in neonates with birth weight less than 2500 g and a gestational age of less than 37 weeks. In the mothers, it was high in single parenthood, primiparous and in housewives and students.. CONCLUSION: There has been a steady decline of neonatal mortality since 2004. Neonatal sepsis, prematurity, birth asphyxia and congenital malformations were the major causes of neonatal deaths. Neonatal sepsis remained constant although at lower rates over the study period.


Asunto(s)
Causas de Muerte , Mortalidad Hospitalaria , Mortalidad Infantil , Enfermedades del Prematuro/mortalidad , Unidades de Cuidado Intensivo Neonatal/estadística & datos numéricos , Adulto , Camerún/epidemiología , Femenino , Humanos , Lactante , Recién Nacido , Masculino , Estudios Retrospectivos , Factores de Riesgo , Factores Socioeconómicos , Centros de Atención Terciaria , Adulto Joven
11.
J Genet Couns ; 23(6): 948-56, 2014 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-24557660

RESUMEN

Sickle Cell Disease (SCD) is a debilitating illness that affects quality of life. Studies of the psychosocial burden of SCD on patients have been rarely reported in Africa. We used a quantitative method, with face-to-face administered questionnaires, to study indices of psychosocial stressors on adult SCD patients in Cameroon. The questionnaire included a 36-item stress factors scale evaluating general perceptions of stress and five main stressors' domain: disease factors, hospital factors, financial factors, family factors and quality of personal-life factors. Items pertaining to psychosocial stressors involved four response options with increasing severity: 0, 1, 2 or 3. Non-parametric tests were used for analysis. The majority of the 83 participants were urban dwellers, female, 20-30 years old, single, unemployed, with at least a secondary or tertiary education. Median age at diagnosis was 100 months; 47.8% had >3 painful vaso-oclusive crises annually. Only 4.8% had been treated with hydroxyurea. The majority reported moderate to severe difficulty coping with SCD. The "degree of clinical severity" category displayed the highest median score (2.0), while familial stressors showed the lowest (0.8). Being female, married, with low education level, an additional affected sibling and low direct income were significantly associated with specific stressors' categories. In Cameroon, there is an urgent need to implement policies that ensure affordable access to health-care and practices to reduce SCD morbidity and improve patients' quality of life.


Asunto(s)
Adaptación Psicológica , Anemia de Células Falciformes/diagnóstico , Anemia de Células Falciformes/psicología , Asesoramiento Genético/psicología , Calidad de Vida/psicología , Adulto , Camerún , Femenino , Pruebas Genéticas/métodos , Conductas Relacionadas con la Salud , Humanos , Masculino , Encuestas y Cuestionarios , Adulto Joven
12.
Arch Pediatr ; 21(3): 306-8, 2014 Mar.
Artículo en Francés | MEDLINE | ID: mdl-24457110

RESUMEN

Pasteurella multocida is classically responsible for local soft tissue infections secondary to dog bites or cat scratches. It can be responsible for meningitis in infants and elderly persons. We report the case history of a 5-year-old male child admitted to our pediatric unit for meningitis. Cerebrospinal fluid analysis revealed an infection with P. multocida. The suspected mode of contamination was either from the saliva of a pet dog or through an unnoticed skull fracture sustained after an accident 1 year prior to the occurrence of meningitis. In spite of the neurologic complication (cerebral abscess), the progression was favorable after drainage of the abscess, 5 weeks of parenteral treatment, and 3 weeks of oral antibiotic therapy. Meningitis due to Pasteurella sp. is rare and can lead to neurologic complications. The notion of bites or scratches can be absent and the mode of contamination is sometimes difficult to unveil.


Asunto(s)
Absceso Encefálico/complicaciones , Meningitis Bacterianas/complicaciones , Meningitis Bacterianas/microbiología , Infecciones por Pasteurella/complicaciones , Pasteurella multocida , Preescolar , Humanos , Masculino
13.
J Genet Couns ; 23(2): 192-201, 2014 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-23881472

RESUMEN

The chronicity of Sickle Cell Disease (SCD) could impair the quality of life of caregivers. We performed a quantitative study to assess various indices of psychosocial burden on Cameroonian parents (N = 130) with at least one living SCD-affected child. Demographic and medical information were obtained from the participants and the review of the patients' medical records. The survey instrument included a 38-item stress factors scale using Likert-type statements, evaluating general perceptions of stress and five main specific stressors: disease factors (clinical severity), hospital factors, financial factors, family factors (life/dynamic) and SCD-child factors (perceived quality of life). The items pertaining to burden involved four response options with increasing severity: 0, 1, 2 or 3. Descriptive statistics and non-parametric tests were used for analysis. Participants were typically aged 38 years, urban dwellers (89%), female (80%), married (60.2%), employed (61.7%) and had secondary/tertiary education (82%). Median age of SCD-affected children was 9 years. The median age at diagnosis of SCD was 6 months; 47.8% had more than 3 painful crises per year. The majority of participants (88.3%) experienced moderate to severe difficulty coping with SCD. On a 0-3 scale, median score of SCD clinical severity was the major factor to undermine the coping ability of parents (2.2); vaso-occlusive painful events (>3 per year) was the disease-related stressor that most impacted their coping ability. The family life dynamic was the least stressful (0.7). Unemployment affected all the stressors' categories. Stressors scores also increased with female, single, low education level, age of SCD-affected children or more than 3 children in the family. In Cameroon, there is an urgent need to implement practices that ensure affordable access to health-care and activities that would reduce SCD morbidity.


Asunto(s)
Anemia de Células Falciformes/psicología , Padres/psicología , Adulto , Camerún , Niño , Estudios Transversales , Humanos , Persona de Mediana Edad , Encuestas y Cuestionarios , Adulto Joven
14.
J Med Ethics ; 40(9): 615-20, 2014 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-23918815

RESUMEN

Sickle cell disease (SCD) is a debilitating illness that affects quality of life and life expectancy for patients. In Cameroon, it is now possible to opt for termination of an affected pregnancy (TAP) where the fetus is found to be affected by SCD. Our earlier studies found that, contrary to the views of Cameroonian physicians, a majority of parents with their children suffering from SCD would choose to abort if the fetuses were found to be affected. What have not yet been investigated are the views of people suffering from/living with SCD. We used a quantitative sociological method, with administered structured questionnaires, to study the attitudes of adult patients suffering from SCD on prenatal genetic diagnosis (PND) and possible TAP. The majority of the 89 participants were urban dwellers (84.3%), women (57.3%), Christian (95.5%) and single (90.9%), with a secondary/tertiary education (79.5%). The majority (89.2%) would consider PND for SCD; almost half (48.5%) would reject TAP while 40.9% would consider it. Respondents who rejected TAP claimed mostly ethical reasons (78.1%) while those who found TAP acceptable cited fear of having an affected child (88.9%) and the poor quality of the affected child's health (81.5%). Cameroonian patients with SCD are generally supportive of PND and a remarkably high number of patients living with SCD reported that they would consider terminating a pregnancy based on their assessment of the future well-being of the child. Research is required to investigate the burden of SCD on families and their quality of life.


Asunto(s)
Aborto Inducido/ética , Anemia de Células Falciformes , Pacientes , Calidad de Vida , Adulto , Anemia de Células Falciformes/diagnóstico , Anemia de Células Falciformes/genética , Anemia de Células Falciformes/psicología , Camerún , Femenino , Humanos , Masculino , Persona de Mediana Edad , Pacientes/psicología , Embarazo , Factores de Riesgo , Encuestas y Cuestionarios
15.
Health sci. dis ; 15(1): 1-6, 2014.
Artículo en Inglés | AIM (África) | ID: biblio-1262685

RESUMEN

Despite the well-known benefits of exclusive breastfeeding in sustaining infant well-being; breastfeeding rates still remain low in many countries. We aimed at investigating the practice and determinants of exclusive breastfeeding for the first six months of life in Cameroonian women. METHODS In this cross-sectional study; we interviewed a consecutive sample of 310 mothers at the Yaounde Gynaeco-Obstretic and Pediatric. The study was conducted from 1st September 2011 to 29th February 2012. Variables related to the practice of breastfeeding within the first 6months of life were assessed. Odds ratio was used to determine the predictive variables of exclusive breastfeeding for 6 months. RESULTS The reported rates of exclusive breastfeeding were 84.8 at birth and 23.5 at six months. Medical advice (49.3) and concern for the child's health (42.5) were the two main reasons for practicing exclusive breast-feeding for the first six months of life; while resumption of studies or work (38.4) and the belief that the newborn was not 'satisfied' (34.2) were the main reasons for introducing other foods. Most children (84.5) did not receive any foods first breastfeed. Breast milk substitutes were given to 70.5 of the babies. Most women (87.1) breastfed on demand; and breast pain was the main difficulty in 60.5 of the mothers. Being a housewife was positively associated with exclusive breast-feeding (OR:2.18; 95 CI: [1.25-3.81]; P= 0.005 ). CONCLUSION Exclusive breastfeeding in the first 6 months remains low in this setting. Sensitization and education of mothers during prenatal visits and routine consultations should be reinforced


Asunto(s)
Actitud , Lactancia Materna , Madres , Pacientes Ambulatorios , Pediatría , Vacunación
16.
J Transl Med ; 10: 22, 2012 Feb 06.
Artículo en Inglés | MEDLINE | ID: mdl-22309994

RESUMEN

BACKGROUND: A mobile health unit may be useful to follow up adult and pediatric patients on antiretroviral treatment and living in remote areas devoid of laboratory facilities. The study evaluated the use of the simplified, robust, single-plateform, volumetric, pan-leucogating Auto40 flow cytometer (Apogee Flow Systems Ltd, Hemel Hempstead, UK) for CD4 T cell numeration in a mobile unit, compared against a reference flow cytometry method. METHODS: The therapeutic mobile unit of the Laboratoire National de Santé Hygiène Mobile, Yaoundé, Cameroon, was equipped with the Auto40. A FACSCalibur flow cytometer (Becton Dickinson Immuno-cytometry System, San Jose, CA, USA) was used as reference method. EDTA-blood samples from volunteers were first subjected to CD4 T cell count in the mobile unit, and an aliquot was sent within 4 hours to Centre International de Référence Chantal Biya, Yaoundé, for FACSCalibur assay. RESULTS: Two HIV screening campaigns with the mobile unit were organised in December 2009 and January 2010. The campaign in the suburb of Yaoundé which was 20 km from the reference laboratory included 188 volunteers comprising 93 children less than 5 years old. The campaign in Ambang Bikok (53 km far from Yaoundé) included 69 adult volunteers. In Yaoundé suburb, mean ± standard deviation (SD) CD4 T cell count was 996 ± 874 cells/µl by Auto40, and 989 ± 883 cells/µl by FACSCalibur; in Ambang Bikok, mean ± SD CD4 T cell count was 1041 ± 317 cells/µl by Auto40, and 1032 ± 294 cells/µl by FACSCalibur. Results by Auto40 and FACSCalibur were highly correlated in Yaoundé (r(2) = 0.982) as in Ambang Bikok (r(2) = 0.921). Bland-Altman analysis showed a close agreement between Auto40 and FACSCalibur results expressed in absolute count as in percentage in Yaoundé and Ambang Bikok. When pooling the 257 CD4 T cell count measurements, the Auto40 yielded a mean difference of +7.6 CD4 T cells/µl higher than by reference flow cytometry; and the sensitivity and specificity of Auto40 in enumerating absolute CD4 T cell counts of less than 200 cells/µl were 87% and 99%, respectively, and in enumerating absolute CD4 T cell counts of less than 350 cells/µl were 87% and 98%, respectively. The intrarun and interun precisions of the Auto40 assay assessed in the mobile unit were 5.5% and 7.9%, respectively. CONCLUSIONS: The Auto40 flow cytometer installed in a therapeutic mobile unit and operated far from its reference laboratory gave a perfect correlation with the reference method, and could be useful in carrying out immunological monitoring of HIV-infected patients living in areas without access to laboratory facilities.


Asunto(s)
Recuento de Linfocito CD4/instrumentación , Recuento de Linfocito CD4/métodos , Citometría de Flujo/instrumentación , Citometría de Flujo/métodos , Unidades Móviles de Salud , Adulto , Camerún , Preescolar , Ácido Edético , Femenino , Humanos , Masculino , Población Rural , Sensibilidad y Especificidad
17.
J Anim Sci ; 90 Suppl 4: 95-7, 2012 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-23365294

RESUMEN

The addition of phytase to swine diets has generally increased P digestibility and consequently reduced fecal excretion of P. The comparative effects on P and Ca digestibility of dietary inclusion of 5 different phytases were evaluated in the weaned piglet. RONOZYME HiPhos is a microbial 6-phytase produced by synthetic genes, mimicking a gene from Citrobacter braakii, and was compared to the Escherichia coli-derived phytases Phyzyme and OptiPhos. In total, 112 weaned piglets (28 d old) were allocated to 8 equal groups of 14 animals. Pigs were fed for 29 d a vegetable-based diet without addition of mineral P [Co(-)] or this diet supplemented with 12 g/kg feed of CaHPO(4) [Co(+)] or with HiPhos at 1000 units/kg (H1000) or 1500 units/kg (H1500), Phyzyme at 500 units/kg (P500) or 750 units/kg (P750), or OptiPhos at 500 units/kg (O500) or 750 units/kg (O750). All phytases reduced (P < 0.05) fecal P concentration and excretion and increased (P < 0.05) P digestibility and apparent P absorption. The digestible P equivalences of H1000, H1500, P500, P750, O500, and O750 were 0.94, 1.50, 0.67, 0.92, 0.58, and 1.11 g of full available P/kg of feed, respectively. Calcium digestibility was increased (P < 0.05) and Ca excretion reduced (P < 0.05) by the phytases. The 3 phytase preparations increased digestibility and apparent absorption of P and Ca in weaned piglets fed a diet containing P exclusively from plant origin.


Asunto(s)
6-Fitasa/farmacología , Calcio/metabolismo , Fósforo/metabolismo , Porcinos/fisiología , 6-Fitasa/clasificación , 6-Fitasa/metabolismo , Alimentación Animal/análisis , Fenómenos Fisiológicos Nutricionales de los Animales , Animales , Fosfatos de Calcio/administración & dosificación , Fosfatos de Calcio/farmacología , Dieta/veterinaria , Heces/química , Fósforo/química
18.
J Anim Sci ; 90 Suppl 4: 182-4, 2012 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-23365323

RESUMEN

Phosphorus of plant-based feedstuffs for monogastric animals is mainly in the form of phytic P, which has a very low bioavailability. The nondigested phytic P may contribute to P pollution. Furthermore, phytic acid may reduce digestibility of other minerals and protein. This study evaluated effects of the microbial 6-phytase RONOZYME HiPhos on apparent ileal digestibility of P, phytic acid, Ca, CP, energy, and AA in six 60-d-old ileorectal anastomosed pigs. In a duplicated 3 × 3 Latin square design, pigs had free access to alternatively a corn (Zea mays)-soybean (Glycine max) meal-barley (Hordeum vulgare)-based diet or this diet supplemented with RONOZYME HiPhos at either 500 units/kg (RH500) or 1000 units/kg (RH1000). Pigs fed diets supplemented with RH500 or RH1000 increased (P < 0.05) digestibility of P, Ca, and Lys. Pigs fed diet RH1000 increased (P < 0.05) digestibility of CP, total AA, indispensable AA, Glu + Gln, His, Gly, Ala, Tyr, Leu, Phe, and Met. Similar to growth trials with increased total tract digestibility of P and Ca, phytase increased apparent ileal digestibility of these indispensable minerals and phytate. The phytase increased digestibility of CP and indispensable AA indicating a better availability of plant-based proteins.


Asunto(s)
Aminoácidos/metabolismo , Anastomosis Quirúrgica/veterinaria , Digestión/fisiología , Íleon/fisiología , Minerales/metabolismo , Recto/cirugía , 6-Fitasa , Alimentación Animal/análisis , Fenómenos Fisiológicos Nutricionales de los Animales , Animales , Dieta/veterinaria , Hordeum , Íleon/cirugía , Glycine max , Zea mays
19.
J Genet Couns ; 20(5): 476-85, 2011 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-21604069

RESUMEN

Little is known about attitudes of parents of Sickle Cell Anemia patients in sub-Saharan Africa regarding prenatal genetic diagnosis and termination of an affected pregnancy. In this study, structured face-to-face interviews were conducted with a sample of 130 parents in Cameroon that had at least one living child with Sickle Cell Anemia. The majority of participants lived in urban areas (89%), were female (80%), Christian (93%), married (60.2%) in monogamous households (81.1%), were employed (61.7%), and had at least a secondary or tertiary education (82%). The majority of parents accepted the principle of prenatal genetic diagnosis for Sickle Cell Anemia (89.8%) and termination of pregnancy (62.5%). Acceptance of the principle of pregnancy termination increased with unemployment (p<.01) and single marital status (p<.05). The results of this study suggest Cameroonian parents with children affected with Sickle Cell Anemia generally accept the principles of prenatal diagnosis and in some cases termination of a pregnancy affected with Sickle Cell Anemia. Additional findings, policy and practice implications, and research recommendations are presented.


Asunto(s)
Anemia de Células Falciformes/diagnóstico , Diagnóstico Prenatal , Adulto , Anemia de Células Falciformes/psicología , Camerún , Femenino , Humanos , Masculino , Encuestas y Cuestionarios
20.
Epilepsy Behav ; 18(3): 247-53, 2010 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-20627815

RESUMEN

BACKGROUND: The main goal of this study was to obtain baseline data on awareness and attitudes and practices with respect to epilepsy among secondary school students. METHODS: We interviewed a total of 659 students from three randomly selected secondary schools in the Kumbo West Health District, using a 12-item questionnaire in English. RESULTS: About 94.7% had heard about epilepsy, 25.8% had read on the subject, 55.2% knew someone with epilepsy and 77.7% had witnessed a seizure. While 37.9% of students would object to association with people with epilepsy (PWE), 47.8% would object to marriage with PWE. About 77.2% would offer equal employment to PWE although 72.7% believed there were jobs not suitable for PWE. Up to 58% of our sample thought epilepsy is contagious and about 62.2% of them declared that epilepsy is curable. Respectively 65%, 9%, and 30% would recommend a medical doctor, a traditional healer and God's help for treatment of epilepsy. Independent determinants of attitudes were found to be: the belief that epilepsy is a form of insanity or is contagious, having witnessed a seizure, being female, being a Christian and having a higher level of education. CONCLUSION: There was a high level of awareness on epilepsy and the negative attitudes observed among these students were better than those reported in the same community. The determinants of negative attitudes were found to be diversified, confirming our hypothesis of variation, and our data further suggest that the interplay between these factors may be more complex than generally thought. This requires further qualitative study.


Asunto(s)
Concienciación , Epilepsia/epidemiología , Conocimientos, Actitudes y Práctica en Salud , Estudiantes/psicología , Adolescente , Factores de Edad , Camerún/epidemiología , Camerún/etnología , Distribución de Chi-Cuadrado , Niño , Comprensión/fisiología , Femenino , Encuestas Epidemiológicas , Humanos , Masculino , Distribución Aleatoria , Reconocimiento en Psicología/fisiología , Características de la Residencia , Instituciones Académicas/estadística & datos numéricos , Adulto Joven
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