RÉSUMÉ
Abstract Bulbine natalensis and Chorophytum comosum are potential medicinal source for the treatment of cancers. Chronic myeloid leukaemia is a hematopoietic stem cells disorder treated by tyrosine kinase inhibitors but often cause recurrence of the leukaemia after cessation of therapy, hence require alternative treatment. This study determines the anti-cancer effect of leaf, root and bulb methanolic and aqueous extracts of B. natalensis and C. comosum in chronic human myelogenous leukaemia (K562) cell line by MTT, Hoechst bis-benzimide nuclear and annexin V stain assays. The root methanolic extract of B. natalensis and C. comosum showed a high cytotoxicity of 8.6% and 16.7% respectively on the K562 cell line at 1,000 μg/ml concentration. Morphological loss of cell membrane integrity causing degradation of the cell and fragmentation were observed in the root methanolic extract of both plants. A high apoptosis (p < 0.0001) was induced in the K562 cells by both leaf and root extracts of the C. comosum compared to the B. natalensis. This study shows both plants possess apoptotic effect against in vitro myelogenous leukaemia which contributes to the overall anti-cancer properties of B. natalensis and C. comosum to justify future therapeutic applications against chronic myelogenous leukaemia blood cancer.
Resumo Bulbine natalensis Baker e Chorophytum comosum (Thunb.) Jacques são potenciais fontes medicinais para o tratamento de cânceres. A Leucemia Mieloide Crônica (LMC) é um distúrbio das células-tronco hematopoiéticas que é tratado com inibidores da tirosina quinase, mas frequentemente, causa recorrência da leucemia após a interrupção da terapia, portanto, requer um tratamento alternativo. Este estudo determinou o efeito anticancerígeno de extratos metanólicos e aquosos de folha, raiz e bulbo de B. natalensis e C. comosum na linhagem celular de leucemia mieloide humana crônica (K562) por ensaios de MTT, Hoechst bis-benzimida nuclear e anexina V. O extrato metanólico da raiz de B. natalensis e C. comosum apresentou alta citotoxidade de 8,6% e 16,7% respectivamente, na linhagem celular K562 com a concentração de 1,000 μg / ml. Perda morfológica da integridade da membrana celular causando degradação dos núcleos, citoplasma e encolhimento celular foi observada no extrato metanólico da raiz de ambas as plantas. Uma alta apoptose (p <0,0001) foi induzida nas células K562 por extratos de folhas e raízes de C. comosum em comparação com B. natalensis. Este estudo mostrou que ambas as plantas possuem efeito apoptótico contra leucemia mieloide in vitro que contribui para as propriedades anticâncer gerais de B. natalensis e C. comosum para justificar futuras aplicações terapêuticas contra câncer de sangue de LMC.
Sujet(s)
Humains , Leucémie myéloïde chronique BCR-ABL positive/traitement médicamenteux , Asphodelaceae , Apoptose , Cellules K562RÉSUMÉ
Abstract Bulbine natalensis and Chorophytum comosum are potential medicinal source for the treatment of cancers. Chronic myeloid leukaemia is a hematopoietic stem cells disorder treated by tyrosine kinase inhibitors but often cause recurrence of the leukaemia after cessation of therapy, hence require alternative treatment. This study determines the anti-cancer effect of leaf, root and bulb methanolic and aqueous extracts of B. natalensis and C. comosum in chronic human myelogenous leukaemia (K562) cell line by MTT, Hoechst bis-benzimide nuclear and annexin V stain assays. The root methanolic extract of B. natalensis and C. comosum showed a high cytotoxicity of 8.6% and 16.7% respectively on the K562 cell line at 1,000 g/ml concentration. Morphological loss of cell membrane integrity causing degradation of the cell and fragmentation were observed in the root methanolic extract of both plants. A high apoptosis (p 0.0001) was induced in the K562 cells by both leaf and root extracts of the C. comosum compared to the B. natalensis. This study shows both plants possess apoptotic effect against in vitro myelogenous leukaemia which contributes to the overall anti-cancer properties of B. natalensis and C. comosum to justify future therapeutic applications against chronic myelogenous leukaemia blood cancer.
Resumo Bulbine natalensis Baker e Chorophytum comosum (Thunb.) Jacques são potenciais fontes medicinais para o tratamento de cânceres. A Leucemia Mieloide Crônica (LMC) é um distúrbio das células-tronco hematopoiéticas que é tratado com inibidores da tirosina quinase, mas frequentemente, causa recorrência da leucemia após a interrupção da terapia, portanto, requer um tratamento alternativo. Este estudo determinou o efeito anticancerígeno de extratos metanólicos e aquosos de folha, raiz e bulbo de B. natalensis e C. comosum na linhagem celular de leucemia mieloide humana crônica (K562) por ensaios de MTT, Hoechst bis-benzimida nuclear e anexina V. O extrato metanólico da raiz de B. natalensis e C. comosum apresentou alta citotoxidade de 8,6% e 16,7% respectivamente, na linhagem celular K562 com a concentração de 1,000 g / ml. Perda morfológica da integridade da membrana celular causando degradação dos núcleos, citoplasma e encolhimento celular foi observada no extrato metanólico da raiz de ambas as plantas. Uma alta apoptose (p 0,0001) foi induzida nas células K562 por extratos de folhas e raízes de C. comosum em comparação com B. natalensis. Este estudo mostrou que ambas as plantas possuem efeito apoptótico contra leucemia mieloide in vitro que contribui para as propriedades anticâncer gerais de B. natalensis e C. comosum para justificar futuras aplicações terapêuticas contra câncer de sangue de LMC.
RÉSUMÉ
La urgente necesidad de desarrollar y producir vacunas seguras y efectivas para garantizar la reducción de la propagación del coronavirus de tipo 2 causante del síndrome respiratorio agudo severo, hizo que el Centro de Inmunología Molecular y el Instituto Finlay de Vacunas, desarrollaran dos vacunas y un candidato vacunal contra la COVID-19, que tienen como componente la molécula del dominio de unión al receptor (aa 319-541) del virus. Para establecer el proceso productivo, se realizaron experimentos en los posibles pasos del proceso de purificación de la molécula del dominio de unión al receptor (aa 319-541), con vistas a su posterior transferencia tecnológica a escala industrial. Dicha molécula está fusionada con una etiqueta de hexahistidina en su extremo C-terminal y presenta nueve residuos de cisteína en su secuencia que forman cuatro enlaces disulfuros intramoleculares, quedando una cisteína libre que permite obtener dos moléculas: dimérica y monomérica, antígenos que forman parte de las vacunas SOBERANA®02 y SOBERANA®Plus y el candidato vacunal SOBERANA 01. Se determinaron las mejores condiciones de adsorción de las matrices cromatográficas de afinidad por quelatos metálicos, intercambio catiónico y exclusión molecular. Se evaluó el desempeño del proceso a escala piloto y se caracterizó la molécula de acuerdo a sus propiedades físico-químicas y biológicas. Los resultados obtenidos mostraron un 60,02 ± 5,15por ciento de recuperación total de la proteína de interés, con más del 98% de pureza en ambas moléculas, una eficiente remoción de contaminantes y una antigenicidad mayor del 90por ciento referido al monómero control del dominio de unión al receptor con 99 por ciento de pureza, lo que demuestra que el proceso establecido es eficiente en la obtención de un producto con la calidad requerida(AU)
The urgent need to develop and produce safe and effective vaccines to guarantee the reduction of the spread of the type 2 coronavirus that causes severe acute respiratory syndrome, led the Center for Molecular Immunology and the Finlay Vaccine Institute to develop two vaccines and one candidate vaccine to combat the 2019 coronavirus pandemic. As part of the establishment of the production process, experiments were carried out on the possible steps of the purification process of the receptor binding domain molecule (aa 319-541) with a view to its subsequent technological transfer on an industrial scale. This molecule is fused with a hexahistidine tag at its C-terminal end and has nine cysteine residues in its sequence that form four intramolecular disulfide bonds; leaving a free cysteine that allows two molecules to be obtained: dimeric and monomeric, which constitute the antigens of the SOBERANA®02 and SOBERANA®Plus vaccines and the SOBERANA 01 vaccine candidate. The best adsorption conditions of the chromatographic matrices of affinity for metal chelates, cationic exchange and molecular exclusion were determined. The performance of the process was evaluated on a pilot scale and the molecule was characterized according to its physical-chemical and biological properties. The results obtained showed a 60.02 ± 5.15percent total recovery of the protein of interest with more than 98% purity in both molecules, an efficient removal of contaminants and an antigenicity greater than 90percent referred to the control monomer of the domain receptor binding with 99% purity; which demonstrates that the established process is efficient in obtaining a product with the required quality(AU)
Sujet(s)
Humains , Mâle , Femelle , Vaccins/immunologie , Vaccins contre la COVID-19/usage thérapeutique , Adsorption/effets des médicaments et des substances chimiquesRÉSUMÉ
Abstract Background: Patients diagnosed with Obstructive Sleep Apnea (OSA) syndrome have a tendency towards hypoventilation, hypoxia, and hypercarbia in the perioperative period. This study hypothesized that the Oxygen Reserve Index (ORi) could predict possible hypoxia and determine difficult airways in patients at risk for OSA, as determined by the STOP-Bang questionnaire. Methods: This prospective study included adult patients undergoing elective surgery under general anesthesia with endotracheal intubation, divided into two groups: low risk (0-2 points) and high risk (3-8 points) based on their STOP-Bang questionnaire results. The primary outcome measure was the highest ORi value reached during preoxygenation and the time to reach this value. Data were recorded at four time points: before preoxygenation (T1), end of preoxygenation (T2), end of mask ventilation (T3), and end of intubation (T4), as well as partial oxygen pressure values in T1, T2, and T4. The secondary outcome measures were the grading scale for mask ventilation, Cormack-Lehane score, tonsil dimensions, use of a stylet, and application of the burp maneuver during intubation. Results: In the high-risk group, preoperative peripheral oxygen saturation values, the highest ORi value reached in preoxygenation, and ORi values at T3 and T4 times were lower, and the time to reach the highest ORi value was longer (p < 0.05). Conclusion: Using ORi in patients with OSA may be useful in evaluating oxygenation, and since difficult airway is more common, ORi monitoring will better manage possible hypoxic conditions.
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The COVID-19 pandemic has caused a large number of diseases worldwide. There are few vaccines to constrain this disease and the value of them is high. In this sense, the antigens of the vaccine platform Soberana, the receptor binding domain from SARS-CoV-2 Spike protein, both the monomeric (mRBD) and dimeric (dRBD) forms, have been developed. This study encompassed several analyses by different techniques like circular dichroism (CD), fluorescence spectroscopy (FS) and Gel Filtration- High Performance Liquid ChLC of mRBD and dRBD. Monomer and dimer exhibited similar far-UV CD spectral characteristics with 54% of ß-sheet content. Similar conformational features according to near-UV CD and FS studies were observed in both RBD. Stress stability studies by far-UV CD, FS, biological activity and GF-HPLC at 37 °C showed that mRBD is very stable. On the other hand, dRBD fluorescent emission showed a shift towards higher wavelengths as the incubation time increases, suggesting exposition of tryptophan residues, unlike what happens with mRBD. Biological activity outcome confirms these results. GF-HPLC profiles showed that in mRBD, the product of molecular stress are dimers and does not increase over time. However, dRBD showed dimer fragmentation as the main degradation species. This study reveals the usefulness of CD techniques for the analysis of degradation of RBD molecules as well as showed the difference in stability of both RBD molecules. Besides, our work provides useful insights into the production of a key protein used in diagnosis and therapeutics to fight COVID-19 pandemia.
Sujet(s)
Humains , Animaux , Vaccins contre la COVID-19 , COVID-19/prévention et contrôle , Pandémies , SARS-CoV-2 , MammifèresRÉSUMÉ
Background@#and Purpose Recent studies suggested an increased incidence of cerebral venous thrombosis (CVT) during the coronavirus disease 2019 (COVID-19) pandemic. We evaluated the volume of CVT hospitalization and in-hospital mortality during the 1st year of the COVID-19 pandemic compared to the preceding year. @*Methods@#We conducted a cross-sectional retrospective study of 171 stroke centers from 49 countries. We recorded COVID-19 admission volumes, CVT hospitalization, and CVT in-hospital mortality from January 1, 2019, to May 31, 2021. CVT diagnoses were identified by International Classification of Disease-10 (ICD-10) codes or stroke databases. We additionally sought to compare the same metrics in the first 5 months of 2021 compared to the corresponding months in 2019 and 2020 (ClinicalTrials.gov Identifier: NCT04934020). @*Results@#There were 2,313 CVT admissions across the 1-year pre-pandemic (2019) and pandemic year (2020); no differences in CVT volume or CVT mortality were observed. During the first 5 months of 2021, there was an increase in CVT volumes compared to 2019 (27.5%; 95% confidence interval [CI], 24.2 to 32.0; P<0.0001) and 2020 (41.4%; 95% CI, 37.0 to 46.0; P<0.0001). A COVID-19 diagnosis was present in 7.6% (132/1,738) of CVT hospitalizations. CVT was present in 0.04% (103/292,080) of COVID-19 hospitalizations. During the first pandemic year, CVT mortality was higher in patients who were COVID positive compared to COVID negative patients (8/53 [15.0%] vs. 41/910 [4.5%], P=0.004). There was an increase in CVT mortality during the first 5 months of pandemic years 2020 and 2021 compared to the first 5 months of the pre-pandemic year 2019 (2019 vs. 2020: 2.26% vs. 4.74%, P=0.05; 2019 vs. 2021: 2.26% vs. 4.99%, P=0.03). In the first 5 months of 2021, there were 26 cases of vaccine-induced immune thrombotic thrombocytopenia (VITT), resulting in six deaths. @*Conclusions@#During the 1st year of the COVID-19 pandemic, CVT hospitalization volume and CVT in-hospital mortality did not change compared to the prior year. COVID-19 diagnosis was associated with higher CVT in-hospital mortality. During the first 5 months of 2021, there was an increase in CVT hospitalization volume and increase in CVT-related mortality, partially attributable to VITT.
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Introduction. Le spectre des atteintes cardiovasculaires au cours de l'infection à VIH a été modifi é par la trithérapie antirétrovirale. L'objectif de ce travail était de décrire le profi l des manifestations cardiovasculaires chez les patients vivants avec le VIH en le comparant à celui de patients séronégatifs. Méthodes. Il s'est agi d'une étude cas-témoins des dossiers de patients respectivement séropositifs et séronégatifs hospitalisés pour une pathologie cardiovasculaire au service de cardiologie du Centre Hospitalier Universitaire de Libreville de janvier 2015 à décembre 2018. L'analyse statistique a été réalisée à l'aide du logiciel Statview 5.0. Lestests de Chi-2 de Pearson ou Exact de Ficher ont été utilisés pour la comparaison des proportions. Résultats. L'étude a porté sur sur l'analyse de 82 et 150 dossiers de patients respectivement séropositifs et séronégatifs. Un âge inférieur à 50 ans était retrouvé chez 70,7% des séropositifs et 43,3% des séronégatifs (p<0,01). Le taux de CD4 moyen des séropositifs était de 189±170/mm3 et 45,1% d'entre eux étaient sous trithérapie antiretrovirale.La cardiomyopathie dilatée était l'atteinte cardiaque la plus fréquente chez les séropositifs (42,7%) et chez les séronégatifs (52,7%) (p=0,14). La maladie thromboembolique veineuse était relevée chez 7(8,5%) séropositifs et 14 (8,8%) séronégatifs (p=0,93). Une péricardite était diagnostiquée chez 25,6% des séropositifs avec une étiologie tuberculeuse dans 85,7% des cas. Les pathologies vasculaires athéromateuses étaient plus fréquentes chez les séronégatifs (23,1%) comparés aux séropositifs (6,1%) (p<0,01). La mortalité des séropositifs était principalement due aux péricardites (71,4%). Conclusion. les manifestations cardiovasculaires liées à l'immunodépression persistent chez les personnes vivant avec le VIH à Libreville. Un dépistage précoce de ces atteintes permettrait de réduire la mortalité.
Introduction. The spectrum of cardiovascular damage during HIV infection has been modified by triple antiretroviral therapy. The objective of this study was to describe the profile of cardiovascular manifestations in patients living with HIV by comparing it to the one of seronegative patients. Methods. This was a case-control study which focused on the files of patients hospitalized for a cardiovascular pathology in the cardiology department of the Center Hospitalier Universitaire de Libreville from january 2015 to december. 2018. Results. In total, there was on the analysis of the files of 82 seropositive patients and 150 seronegative patients. The age found was less than 50 years old in 70.7% of seropositives and 43.3% of seronegatives (p <0.01). The mean CD4 count in seropositives was 189 ± 170 /mm3 and 45.1% of them were on triple antiretroviral therapy. Dilated cardiomyopathy was the most common cardiac disease in HIVpositive (42.7%) and HIV-negative (52.7%) (p = 0.14). Venous thromboembolic disease was noted in 7 (8.5%) seropositives and 14 (8.8%) seronegatives (p=0.93).Pericarditis was diagnosed in 25.6% of seropositives patients with a tuberculous etiology in 85.7% of cases. Atheromatous vascular pathologies were more frequent in seronegative (23.1%) compared to seropositive (6.1%) (p <0.01). Mortality among seropositive was mainly due to pericarditis (71.4%)
Sujet(s)
Humains , Mâle , Femelle , Infections à VIH , Séropositivité VIH , Séronégativité VIH , Thromboembolisme veineux , Facteurs de risque de maladie cardiaque , Péricardite , Mortalité , CardiomyopathiesRÉSUMÉ
Introduction : L'étude clinique des patients infectés par le SARS-CoV2 est nécessaire pour la mise en Åuvre des mesures préventives de lutte contre la COVID-19. L'objectif de l'étude a été de déterminer le profil clinique et évolutif des patients Covid-19 au CHU de Libreville.Méthodes : Il s'agit d'une étude rétrospective à viser analytique menée en secteur d'infectiologie COVID du SICOV du CHU de Libreville sur une période d'activité allant du 15 mars au 30 juin. La régression logistique univariée et multivariée pour explorer les facteurs de risque associés à la mortalité au SICOV a été utilisée. Résultats : Au total 441 patients COVID-19 étaient inclus dans l'étude, parmi lesquels 398 survivants (90,2%) et 43 décédés (9,8%). La population de moins de 65 ans représentait 88,0% de l'effectif. Le sex-ratio était de 1,34. Par rapport aux 398 survivants, les 43 patients décédés étaient significativement plus âgés (âge médian, 59 ans vs 48 ans ; p <0,001). Les lésions pulmonaires avec atteinte critique > 75% étaient plus importantes chez les patients décédés (29,2% vs 3,0% ; p=0,001). Cependant, après ajustement en analyse multivariée, l'âge supérieur à 65 ans était le seul facteur de risque indépendant de décès (p<0,001 ; OR=4,632 IC95% [2,243 9,565]).Conclusion : L'âge supérieur à 65 ans était le facteur de risque indépendant de décès, nécessitant un renforcement de mesure de contrôle de l'infection dans cette population
Introduction: The study of the prognostic factors of death of patients infected with SARS-CoV2 is necessary for the implementation of preventive measures against COVID-19. Methods: This is a retrospective study conducted in the COVID infectious disease sector of the SICOV of the University Hospital of Libreville over a period of activity from March 15 to June 30. The clinical course of the survivors and the deceased were compared. Univariate and multivariate logistic regression to explore risk factors associated with SICOV deaths were used.Results: A total of 441 COVID-19 patients were included in the study, of which 398 survivors (90.2%) and 43 died (9.8%). The population under 65 represented 88.0% of the workforce. The sex ratio was 1.34. Compared to the 398 survivors, the 43 patients who died were significantly older (median age, 59 years vs 48 years; p <0.001). Lung lesions with critical impairment > 75% were greater in deceased patients (29.2% vs. 3.0%; p = 0.001). On multivariate analysis, age over 65 was the main independent risk factor for death (p <0.001; OR = 4.632 95% CI [2.243 - 9.565]).Conclusion: Age over 65 was the independent risk factor for death, requiring increased infection control measures in this population
Sujet(s)
Humains , Mâle , Femelle , Mortalité , COVID-19 , Évolution moléculaire , Profil génétique , Détection de l'acide nucléique du virus de la COVID-19RÉSUMÉ
Introduction : La présence de matériel prothétique intracardiaque expose au risque thromboembolique, infectieux et/ou hémorragique. L'objectif de ce travail était de décrire les particularités cliniques et étiologiques des complications de prothèses valvulaires mécaniques.Cas cliniques : Il s'agit d'une série de cinq observations de patients présentant une complication de prothèses valvulaires mécaniques colligées au service de cardiologie du Centre Hospitalier Universitaire de Libreville durant la période allant de Janvier 2017 à Décembre 2021. Les complications rapportées étaient deux cas de thrombose obstructive de prothèse, un accident vasculaire cérébral sur microthrombose, une endocardite infectieuse et un accident hémorragique sous antivitamines K. Ce dernier était responsable d'un décès. Conclusion : Ces cas cliniques mettent en exergue les difficultés liées au suivi de l'anticoagulation au long cours chez les patients porteurs de prothèse valvulaire mécanique dans notre contexte. La mise en place d'un programme d'éducation thérapeutique pourrait diminuer ces complications parfois létales
Introduction: The presence of intracardiac prosthetic material exposes to thromboembolic, infectious and/or hemorrhagic risk. The objective of this study was to describe the clinical and etiological particularities of mechanical valve prostheses complications. Clinical cases: five observations of patients presenting with a complication of mechanical valve prostheses collected in the cardiology department of the Libreville University Hospital Center during the period from January 2017 to December 2021, were reported. Complications observed were two cases of obstructive prosthesis thrombosis, a cerebrovascular stroke coming from microthrombosis, an infective endocarditis and a hemorrhagic accident under vitamin K antagonists. This last was responsible for the one death. Conclusion: These clinical cases highlight the difficulties related to the monitoring of long-term anticoagulation in patients with mechanical valve prosthesis in our context. The development of a therapeutic education program could reduce these potentially lethal complications
Sujet(s)
Complications postopératoires , Service hospitalier des achats , Implantation de prothèses vasculaires , Thromboembolisme veineuxRÉSUMÉ
Introduction : Les thromboses artérielles, notamment coronaires, font partie des nombreuses manifestations extrapulmonaires de l'infection au coronavirus SARSCoV-2 dans les pays industrialisés. Cas cliniques: Ce travail rapporte trois observations de patients hospitalisés au Centre Hospitalier Universitaire de Libreville pour lesquels un diagnostic de syndrome coronarien aigu avait été retenu dans un contexte de Covid-19 durant la période allant du 1er mai au 30 septembre 2020. La première rapporte l'échec d'une thrombolyse avec la formation précoce d'un thrombus intraventriculaire gauche chez un patient de 59 ans ayant présenté un syndrome coronaire aigu antérieur étendu. Cette évolution particulière témoigne du caractère hautement inflammatoire et prothrombogène de la Covid-19. Les deux autres observations mettent l'accent sur les présentations parfois atypiques et les difficultés diagnostiques des syndromes coronariens aigus dans cette situation à Libreville. Conclusion : Le diagnostic et la prise en charge des syndromes coronariens aigus sont complexes dans le contexte d'infection à SARSCoV-2 dans nos régions
Introduction: Arterial thrombosis, particularly coronary thrombosis, is one of the many extrapulmonary manifestations of infection with the SARSCoV-2 coronavirus in industrialized countries. Clinical cases: This work reports three observations of patients hospitalized at the Center Hospitalier Universitaire de Libreville for whom a diagnosis of acute coronary syndrome had been made in Covid-19 during the period from May 1 to September 30, 2020. The first reports a thrombolysis failure with early formation of a left intraventricular thrombus in a 59-year-old patient with extensive anterior acute coronary syndrome. This particular evolution demonstrates the highly inflammatory and prothrombogenic context of Covid-19.The other two observations focus on the atypical presentations and the diagnostic difficulties of acute coronary syndromes in this infectious atmosphere in Libreville. Conclusion: The diagnosis and management of acute coronary syndromes are difficult in the context of SARSCoV-2 infection in our regions.
Sujet(s)
Thromboses des sinus intracrâniens , Syndrome cardiorénal , Dépistage sérologique de la COVID-19 , COVID-19 , InfectionsRÉSUMÉ
Introduction: Maternal perception of foetal movement ensures foetal wellbeing. Reduced foetal movement is associated with foetal hypoxia, stillbirths, and intrauterine foetal growth restriction (IUFGR). This study aimed at assessing factors that are associated with maternal perception of reduced foetal movements. Method: This was a cross-sectional study that was conducted at Iringa Regional Referral Hospital from 1st January 30th June 2022. A purposive sampling technique was used, and SPSS version 25 software was used for data analysis. Results: 41.3 % of study participants were aged 24 34 years, with a mean and SD of 29.08 ±7.53. 75% were not employed, 52.8 % of study participants delivered from 37 42 weeks of gestational age, 66.1% had a posterior placenta and only 24.0 % had an anterior placenta. Women who delivered at 28 36 weeks of gestational age were about 4 times more likely to experience reduced foetal movement compared to those who delivered at 37 42 weeks of gestation (AOR=4.162, 95% CI 2.174 - 7.966, p= =0.0067). Conclusion: Reduced foetal movements are associated with lower gestation age at delivery and decreased antenatal clinic attendance in Iringa, Tanzania. All pregnant women should be encouraged to make early antenatal clinic attendance and should attend adequate visits. Healthcare providers should educate and create awareness on methods of assessing foetal movements.
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Humains , Femelle , Orientation vers un spécialiste , Âge gestationnel , Femmes enceintes , Mouvement foetal , Facteurs de risque , MéthodesRÉSUMÉ
BACKGROUND Zika virus (ZIKV) is an emerging arbovirus associated with foetal malformations and neurological complications. The infection is usually associated with mild symptoms. The comparison between the allelic frequency of polymorphic genes in symptomatic infected individuals in the population can clarify the pathogenic mechanisms of ZIKV. During ZIKV infection, cytokines are produced and natural killer (NK) cells are recruited, whose activation depends on signaling pathways activated by specific receptors, such as killer cell immunoglobulin-like receptors (KIR). These molecules interact with human leukocyte antigen (HLA) class I ligands and are encoded by polymorphic genes. OBJECTIVES This study aimed to evaluate the frequency of allelic variants of the genes encoding the KIR receptors and their HLA class I ligands in 139 symptomatic ZIKV-patients and 170 controls negative for the virus, and to evaluate the role of these variants for ZIKV susceptibility. METHODS KIR and HLA class I genes were genotyped using the polymerase chain reaction-sequence specific oligonucleotide (PCR-SSO) technique. FINDINGS No significant differences in the frequency distribution of KIRs and KIR-HLA in patients compared to controls were observed. MAIN CONCLUSIONS KIR and its HLA ligands might play a minor role in ZIKV infection in the south and southeast Brazilian individuals.
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Las características del cortejo humano han sido analizadas por diversas ciencias, pero con limitados estudios en Sudamérica. Este trabajo es un estudio de las asociaciones entre inteligencia de cortejo y personalidad, satisfacción vital, orientación sociosexual y estrategias de historia de vida en adultos paraguayos. Fueron seleccionados 219 adultos mediante muestreo por conveniencia. Se aplicaron los instrumentos: Mating Intelligence Scale, Test IPIP, Inventario de Orientación Sociosexual Revisado, K-SF-42, Escala SWLS y Protocolo de Conductas y Preferencias de Cortejo. Los principales resultados muestran, por un lado, asociaciones entre inteligencia de cortejo con rasgos de personalidad, orientación sociosexual, satisfacción vital y estrategias de historias de vida K. Por otro lado, se identificaron varias particularidades culturales de las conductas de cortejo. Se concluye que existen asociaciones entre inteligencia de cortejo con los constructos referidos y ciertas diferencias culturales.
Diverse sciences have analyzed aspects involved in human courtship. There are few studies in South America. The present study examines the associations between mating intelligence with personality, life satisfaction, sociosexual orientation and life history strategies in Paraguayan adults. The sample included 219 adults selected by convenience sampling. Mating Intelligence Scale, IPIP Test, Sociosexual Orientation Scale, K-SF-42, SWLS and Protocolo de Conductas y Preferencias de Cortejo were used. In the first place, the results show associations between mating intelligence with sociosexual orientation, life satisfaction, slow life history strategy and personality traits. Second, some cultural particularities of courtship behaviours were identified. In conclusion, we find associations between mating intelligence with the mentioned constructs and some cultural differences of courtship
Sujet(s)
Humains , Mâle , Femelle , Adolescent , Adulte , Adulte d'âge moyen , Jeune adulte , Personnalité , Parade nuptiale/psychologie , Intelligence , Relations interpersonnelles , Paraguay , Comportement sexuel/psychologieRÉSUMÉ
RESUMEN La prueba BANA determina la actividad proteolítica de las principales bacterias periodontales del complejo rojo, la facilidad y la versatilidad clínica de la prueba la ha convertido en una opción viable para valorar el tratamiento periodontal. El Objetivo de esta investigación es la identificación de microorganis-mos, anaerobios reactivos a la prueba BANA antes y después de la terapia periodontal no quirúrgica en pacientes diabéticos. Materiales y Métodos: para este estudio se trabajó con pacientes que acuden al Club de Diabéticos del Centro de Salud N.- 4 de Chimbacalle perteneciente al Ministerio de Salud Pública del Distrito Metropolitano de Quito. Se realizó un muestreo no probabilístico a conveniencia de un total de 30 pacientes diabéticos con edades de 35 a 75 años de edad de ambos sexos, a los cuales se les realizó el análisis microbiológico BANA, antes y después de la terapia periodontal no quirúrgica. Se realizó un estudio prospectivo antes de la terapia periodontal no quirúrgica, y un mes después en pacientes diabéticos con periodontitis crónica en sitios con profundidades de sondaje y nivel de inserción ≥ 5mm. Resultados: los resultados del estudio no mostraron diferencias significativas entre los pacientes del estudio antes y después de la terapia periodontal no quirúrgica para la prueba microbiológica BANA. Conclusiones: La terapia periodontal no quirúrgica es un tratamiento eficaz en la eliminación de la enfermedad periodontal siempre y cuando exista la colaboración del paciente. Los resultados de la prueba microbiológica en este estudio no demostraron diferencias significativas
ABSTRACT The BANA test determines the proteolytic activity of the main periodontal red complex bacteria, the ease and clinical versatility of the test has made it a viable option for assessing periodontal treatment. The objective of this research is the identification of anaerobic microorganisms reactive to the BANA test before and after non-surgical periodontal therapy in diabetic patients. Materials and Methods: For this study we worked with patients attending the Diabetic Club of the Health Center No. 4 of Chimbacalle belonging to the Ministry of Public Health of the Metropolitan District of Quito. A non-probabilistic convenience sampling of a total of 30 diabetic patients between 35 and 75 years of age of both sexes was carried out, who underwent BANA microbiological analysis before and after non-sur-gical periodontal therapy. A prospective study was performed before non-surgical periodontal therapy, and one month after in diabetic patients with chronic periodontitis in sites with probing depths and insertion level ≥ 5mm. Results: the results of the study showed no significant differences between study patients be-fore and after non-surgical periodontal therapy for the microbiological BANA test.Conclusions: Non-surgical periodontal therapy is an effective treatment in the elimination of periodontal disease as long as there is patient cooperation. The results of the microbiological test in this study showed no significant differences.
Sujet(s)
Humains , Mâle , Femelle , Adulte , Adulte d'âge moyen , Maladies parodontales , Bactéries , Parodontite chronique , Thérapeutique , Techniques microbiologiques , Diabète , Indicateurs et réactifsRÉSUMÉ
Adolescents use substances for various reasons such as for pleasure, stress and anger management. Many factors have been reported to influence adolescent substance use. However, there is paucity of reports from this part of Nigeria.AIM/OBJECTIVES: To identify the socio-demographic factors associated with substance use among secondary school adolescents in Gwagwalada Area Council.MATERIALS AND METHODS: A cross-sectional, descriptive, questionnaire-based, study was carried out in secondary schools among adolescents aged 10 years to 18 years who met the inclusion criteria and after appropriate ethical approval had been obtained.RESULTS: One thousand, one hundred and ninety-six student-filled questionnaires were analysed. The mean age of the students was 14.54 years ± SD 2.28. The students' religion, family structure, residence and type of school were associated with licit substance use while their religion, family structure and residence were associated with illicit substance use (P =<0.05). There was also statistically significant relationships between frequency in participation in religious activities and tobacco use (P = <0.01) and birth order and cocaine andhallucinogen use at P = 0.014 and P = 0.018, respectively.CONCLUSION AND RECOMMENDATION: Several factors were associated with adolescent substance use in this study. It is recommended that more in-depth studies be done to determine causality
Sujet(s)
Adolescent , Nigeria , Troubles liés à une substanceRÉSUMÉ
Background:Thyroid disorders constitute the second most common endocrine disordersworldwide, butthey are less commonly researched in thisenvironmentdue to low cost-effectiveness.Objective:Tostudy thespectrumofthyroid disordersat the EndocrinologyClinic ofa tertiary health facility in Sagamu, South-west, Nigeria,over two years.Method:Thisretrospectivestudywas conducted onallnewclinic attendees with thyroid disordersbetweenJanuary 2016 andDecember 2017.The data retrieved included clinicaldata,results of thyroid function tests and thyroid ultrasonographic scan.The patients weregroupedclinically into euthyroid, hypothyroid and thyrotoxicstates.Results:A total of 93 thyroid caseswereseen, and this constituted13.64% ofallnewendocrine consultations (682 patients).Themean age(±SD; range)of the patients was 37.6 (13.6; 15-78)years.Majority of the patients were females witha female-to-maleratio of 4.5:1.Out of these,77.4% hadGoitrous enlargement.Thyrotoxicosis wasthe most commonform of thyroid dysfunction,(72; 77.40%), mainly duetohyperthyroidism from Graves'disease(50; 69.44%),followed by toxic multinodular goitre (12; 16.67%),toxic solitary nodular goiter (5; 6.94%) andothers (5; 6.95 %).Hypothyroidism constituted 10.75%while euthyroid goitre constituted 11.85% of all thyroid cases.Conclusion:Auto-immune thyroiddisease remains the most common thyroid disorder amongendocrineclinicattendees. There isa needfor furtherstudies to elucidatethe likely aetiologies
Sujet(s)
Goitre , Hypothyroïdie , Nigeria , Patients , Maladies de la thyroïde , ThyréotoxicoseRÉSUMÉ
Introduction et objectif : L'Insuffisance Cardiaque (IC) est une pathologie fréquente à l'échelle mondiale. L'objectif de ce travail était de décrire le profil épidémiologique et clinique de l'IC et de relever l'apport des examens paracliniques disponibles au Gabon dans la prise en charge.Patients et méthodes : Il s'est agi d'une étude rétrospective, descriptive, allant de janvier 2015 à décembre 2016. Elle a porté sur l'analyse de 464 dossiers de patients admis pour IC en cardiologie au Centre Hospitalier Universitaire de Libreville (CHUL).Résultats : La prévalence de l'IC était de 51,7%, l'âge moyen des patients était de 54,6 ± 18,3 ans. Le sex-ratio était de 1,26. L'hypertension artérielle (HTA) (55,5%) et l'obésité (19,2%) constituaient les principaux facteurs de risque cardiovasculaire. La présentation clinique prédominante était l'IC globale (62,5%) et le mode d'installation était progressif dans 92% des cas. L'échocardiographie-Doppler et le dosage des peptides natriurétiques étaient réalisés respectivement chez 57,5% et 44,4% des patients. Les cardiopathies retrouvées étaient essentiellement hypertensives (45,3%) et valvulaires (15%). Une altération sévère de la fonction systolique du VG était notée chez 40,4% des patients. L'IC à fraction d'éjection ventriculaire gauche préservée représentait 8,3% des causes d'IC identifiées. Le taux moyen NT pro-BNP était de 7430,3 ± 7152,5 pg/ml.Conclusion : L'IC est le principal motif d'hospitalisation en cardiologie au CHUL. Elle affecte des sujets relativement jeunes. L'étiologie la plus fréquente est l'HTA. L'échocardiographie-Doppler et le NT-proBNP ont permis d'estimer la sévérité des lésions initiales
Sujet(s)
Centres hospitaliers universitaires , Gabon , Défaillance cardiaque systolique/étiologie , Défaillance cardiaque/étiologieRÉSUMÉ
La cardiomyopathie du péripartum (CMP-PP) est une cause rare d'insuffisance cardiaque (IC) de la femme en période d'activité génitale. L'objectif de cette étude était d'en déterminer les profils cliniques de la maladie chez des parturientes au Gabon. Il s'est agi d'une analyse rétrospective réalisée de janvier 2012 à janvier 2016 au Centre Hospitalier Universitaire de Libreville. Une CMP-PP a été diagnostiquée chez 27 patientes avec un âge moyen de 27,1 ± 5,5 ans. L'IC était globale dans 59,2 % des cas et survenait chez 92,6 % des patientes dans le post-partum. La dyspnée était le symptôme initial dans 100 % des cas, d'installation progressive chez 9 (33.3 %) patientes, avec un délai moyen d'apparition de 29,4 ± 35 jours. La plupart des patientes étaient des multipares (74,1 %), avaient un niveau socio-économique faible (48,1 %) et avaient une pré-éclampsie (48,1 %). Un diamètre télédiastolique moyen du ventricule gauche supérieur à 60 mm était retrouvé chez 17 (62,9 %) patientes et une fraction d'éjection ventriculaire gauche inférieure à 30 % chez 14 (51,8 %) d'entre elles. A Libreville, la CMP-PP affecte des patientes jeunes et les lésions initiales sont sévères
Sujet(s)
Centres hospitaliers universitaires , Cardiomyopathies/diagnostic , Cardiomyopathies/étiologie , Dyspnée , Gabon , Période de péripartumRÉSUMÉ
Introduction: bacterial agents are among pathogens implicated to cause diarrhea in children resulting to huge mortality and morbidities. Bacterial etiologies causing diarrhea in children below five years are rarely investigated in Central Kenya, which would otherwise guide prescription and target health education.Methods: a cross-sectional study approach was applied on 163 randomly selected stool samples from children below five years who presented with diarrhea in Murang`a and Muriranja`s hospitals. The objective was to determine the bacterial agents of diarrhea. Enteric bacterial pathogens were cultured using appropriate media and identified. Statistical analyses were performed using STATA v.13. Chi-square or Fisher exact-test were used to check for evidence of relationship whenever applicable.Results: there were nearly equal distributions in gender 86 (52.8%) female vs. 77 (47.2%) male, majority (35.6%) aged between 0-12 months. Bacterial isolates were highly diverse in female than the male, children aged 49-60 months and least among those aged 0-12 months. A total of 188 bacterial isolates belonging to 11 genera were recovered. The predominant bacteria was nonpathogenic Escherichia coli 85 (45.2%), while 13 (6.9%) Escherichia coli were positive for virulence genes, including 8 (4.3%) positive for LT and STp Shiga-like or Enterotoxigenic Escherichia coli, 3 (1.6%) positive for eae and bfpA Enteropathogenic Escherichia coli and 2 (1.1%) positive for Enteroaggregative Escherichia coli gene. Others included: Salmonella 21 (11.2%), Pseudomonas 14 (7.4%), Shigella 14 (7.4%), Klebsiella 12 (6.4%), Aeromonas 8 (4.3%), Enterobacter 7 (3.7%), Proteus 8 (4.3%), Citrobactor 3 (1.6%), Yersinia 2 (1.1%) and Vibrio 1 (0.5%).Conclusion: salmonella was the major bacterial isolate and majority of the bacteria were statistically significant cause of diarrhea (p=0.001)
Sujet(s)
Enfant d'âge préscolaire , Études transversales , Diarrhée/étiologie , Diarrhée/microbiologie , Diarrhée/parasitologie , Enterobacteriaceae , Kenya , VirulenceRÉSUMÉ
Background: The risk factors associated with CKD such as hypertension, diabetes and obesity remain prevalent globally, resulting in a high prevalence of CKD especially in developing countries. Screening for CKD and its' risk factors is recommended for high-risk population. This study aimed to determine the prevalence and risk factors of CKD in a semiurban community in Nigeria.Methods: A cross-sectional survey was conducted in the teaching hospital premises at Oghara, after a world kidney day (WKD) health awareness campaign was undertaken in the community. A total of 135 subjects were interviewed and the following measurements were performed: blood pressure, body mass index, blood glucose, dipstick urinalysis, serum creatinine and estimation of glomerular filtration rate (GFR) using CKDEPI.Results: Mean age was 40 ± 13 years and 69.6% of participants were young. Male to female ratio was 1:4. The prevalence of proteinuria was 4.4% while 10.7% of all subjects had CKD (GFR <60ml/min). Although 11.1% of participants were known hypertensives only 6.7% had high blood pressure on screening. Other risk factors identified were Diabetes mellitus (10.3%), family of history of hypertension (14.1%), family of history of diabetes (9.6%), family of history CKD (1.5%) and obesity (11.9%). Proteinuria, diabetes and family history of hypertension were significantly associated with CKD.Conclusions: CKD and its risk factors are common in the population.Dipstick proteinuria remains a useful and significant indicator of CKD.Community screening for the risk factors of CKD in developing countries is realistic and should be encouraged as a public health priority