Publications by authors named "Moukassa D"

Enteroviruses (EV) initiate replication by binding to their cellular receptors, leading to the uncoating and release of the viral genome into the cytosol of the host cell. Neutralising antibodies (NAbs) binding to epitopes on enteroviral capsid proteins can inhibit this infectious process through several mechanisms of neutralisation in vitro. Fc-mediated antibody effector functions such as antibody-dependent cell-mediated cytotoxicity and antibody-dependent cellular phagocytosis have also been described for some EV.

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  • The study examined the prevalence of high-risk HPV infections and genotype distribution in individuals with normal cervical cytology, along with their vaccination status.
  • A total of 110 cervical samples were tested using the Cepheid GeneXpert system, revealing that 33% were positive for HPV DNA, with HPV16 being the most common type found.
  • Most participants (96.4%) had not received any HPV vaccine, and the few vaccinated individuals still showed HPV infections, highlighting the need for greater public awareness regarding HPV risks.
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Objectives: Human herpesvirus 8 (HHV8) is rarely studied in Congo, despite its prevalence in Africa. Among healthy individuals, HHV-8 does not always lead to a life-threatening infection; however, in immunocompromised individuals, it could lead to more severe disease. The distribution of HHV-8 genotypes varies depending on ethnicity and geographic region.

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Sarcoidosis is a multisystem inflammatory disease of unknown etiology. The isolated extrapulmonary form is rare. We report the case of hepatosplenic sarcoidosis in a 29-year-old female patient.

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Objectives: The HTLV-1 infection persists for life, remaining as asymptomatic viral reservoirs in most patients, ensuring the chain of transmission, but around 4% develop adult T-cell leukemia/lymphoma (ATLL). HTLV-1 is an oncogenic retrovirus that transforms CD4 T lymphocytes and deregulates the lymphoproliferative pathways that contribute to the development of ATLL. To achieve cell transformation, most oncogenic retroviruses use proto-oncogene capture transduction, with proviral integration disrupting the expression of tumor suppressors or proto-oncogenes.

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Background And Aim: (Hp) infection is a real public health problem in the Congo. We aimed study the histomolecular profile of Hp strains circulating in Brazzaville, Congo, in order to contribute to the improvement of Hp-infected patients in the country.

Methods: This was an analytical-transversal study carried out from January to November 2020 (i.

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  • HPV is a common virus linked to cervical cancer, especially in developing countries, and Chlamydia trachomatis (CT) is a significant factor in this relationship.
  • In a study of 131 cervical samples, 17.5% were HPV-only positive, 7.6% were CT-only, and 9.9% showed co-infection of both.
  • Risky sexual behaviors and cytology status were identified as key factors related to HPV/CT co-infection, highlighting the need for increased awareness and protective measures against cervical cancer.
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In resource-limited countries, the lack of widespread screening masks the true situation of COVID-19. We conducted this study to assess SARS-CoV-2 spread by detection of specific antibodies and to determine associated factors. A population-based cross-sectional study was conducted.

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  • Cervical cancer is a major health concern in the Republic of Congo, particularly associated with high-risk human papillomavirus (HR-HPV) infections among women in urban and rural areas.
  • A study involving 284 Congolese women revealed a high prevalence of HPV DNA shedding (64.4%), with HR-HPV types found predominantly in specific age groups and among HIV-positive individuals.
  • The findings suggest that young and HIV-infected women are at higher risk, highlighting the need for improved HPV vaccination and screening programs in the country.
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Poliovirus (PV), the virus that causes both acute poliomyelitis and post-polio syndrome, is classified within the species, and there are three wild PV serotypes: WPV1, WPV2 and WPV3. The launch of the Global Polio Eradication Initiative (GPEI) in 1988 eradicated two of the three serotypes of WPV (WPV2 and WPV3). However, the endemic transmission of WPV1 persists in Afghanistan and Pakistan in 2022.

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Background: Since the work of Band . in 1990 ( 87:463-467), several studies have suggested a possible link between the pathogenesis of breast cancer and viral infection. Infection with oncogenic HPV has been one of the viruses implicated in breast cancer cases worldwide.

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The Republic of Congo (RoC) is one of the African countries with the most histoplasmosis cases reported. This review summarizes the current status regarding epidemiology, diagnostic tools, and treatment of histoplasmosis in the RoC. A computerized search was performed from online databases Medline, PubMed, HINARI, and Google Scholar to collect literature on histoplasmosis in the RoC.

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Several studies have shown that low levels of adiponectin (ADP) and high levels of alpha tumor necrosis factor (NFT) increase the risk or severity of many cardiometabolic diseases associated with insulin resistance. The main objective of this study was to evaluate the association between plasma adipokines and IR measured by HOMA-IR. The secondary objective was to determine the biomarker of the potential inflammation to predict IR in Congolese melanoderm subjects residing in Brazzaville.

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  • - The Republic of Congo has a significant burden of serious fungal infections, affecting approximately 5.4% of its population annually (around 283,450 individuals) due to high rates of tuberculosis and HIV/AIDS.
  • - Key infections include cryptococcal meningitis, Pneumocystis jirovecii pneumonia, and chronic pulmonary aspergillosis, with specific annual incidence rates of 560, 830, and a prevalence of 3,420 cases, respectively.
  • - The study highlights the need for enhanced awareness and improved diagnostic and treatment approaches for fungal infections among healthcare professionals in the Republic of Congo.
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Introduction: Our was to evaluate the management of chronic renal failure in hemodialysis at the Edith Lucie Bongo Ondimba General Hospital (HGELBO).

Materials And Methods: This was a cross-sectional and analytical study over a 10-month period from March 1, 2018 to December 31, 2018. This included all patients aged 16 and over whohad at least one treatment session hemodialysis during the study period.

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  • The study aimed to analyze obesity trends in the workplace, specifically in an oil company, using data from 625 employees collected between February and November 2017.
  • Results showed a significant prevalence of obesity at 21.1%, with key factors linked to obesity including being female, meal frequency, snacking habits, physical inactivity, and work-related stress.
  • The findings highlight a growing health concern regarding obesity in the workplace and emphasize the need for effective prevention strategies, especially in the younger, more productive workforce in the Congolese context.
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  • * Seven plants were identified, and their extracts were tested for antienteroviral activity, revealing only the aqueous extract of Syzygium brazzavillense showed significant inhibitory effects on certain viruses at specific concentrations.
  • * The study concludes that aqueous extracts of Syzygium brazzavillense have potential as a treatment against enterovirus infections, highlighting its efficacy in inhibiting virus replication in vitro.
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Background: Coxsackieviruses B (CV-B) are enteroviruses that have been reported to play a role in the pathogenesis of type 1 diabetes. Enteroviral RNA was detected in the gut mucosa of patients. The mucosal immunity is an interconnected network; therefore, the response to enteroviruses possibly present in the gastrointestinal mucosa can be reflected by specific antibodies in the saliva.

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BACKGROUND To explore the time-dependent effects of acupuncture on mRNA levels of the apoptotic factors BCL-2 and BAX in a rat cerebral hemorrhage model, slow injection of autologous blood to the caudate nucleus was used to generate the cerebral hemorrhage model. MATERIAL AND METHODS A sham surgery control group, groups with acupuncture applied 3, 9, 24, and 48 hours after model induction, and time-matched model-only control groups were used. In situ hybridization was used to detect BCL-2 and BAX mRNA expression, and semi-quantitative RT-PCR was used to measure the expression.

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Background: Chronic Hepatitis B infection is a major health problem in Republic of Congo therefore molecular analysis of HBV strains is important to detect the patients at high risk of disease progression.

Methods: Serum samples were obtained from 111 chronic HBV patients in Pointe Noire. HBsAg, HBeAg and HBeAb were detected.

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  • The study investigates HPV-16 variants in Southwestern Congolese women to assess their risk for cervical cancer based on specific genetic changes in the E6 and E7 regions.
  • DNA from 20 HPV-16 isolates was analyzed using PCR and sequencing, revealing 18 nucleotide changes in the E6 and 4 in the E7 regions, with the majority being missense mutations.
  • The results show that most variants belong to the African lineage and highlight a previously undocumented mutation in the E7 region, underscoring the importance of studying geographic variations of HPV.
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Background: Knowledge on HPV prevalence and genotype distribution in HSIL and ICC is highly essential for the introduction of an effective vaccination program and appropriate epidemiological monitoring of viral ecology before and after vaccination in Congo. This study aimed to determine the specific-HPV genotypes in HSIL and ICC among women in southwestern Congo.

Methods: 125 archival paraffin-embedded biopsy collected between 2008 and 2012 and histologically diagnosed were investigated.

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Introduction: Hepatitis C virus (HCV) infection and human immunodeficiency virus (HIV) infections are public health problems in sub-Saharan countries such as the Republic of Congo. HIV infection could impact the characteristics of HCV infection in co-infected people. We investigated HCV-HIV co-infection among blood donors in Congo.

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  • * The detection of HBV serologic markers from dried plasma showed 100% sensitivity and specificity, while HBV DNA detection had 96% sensitivity and 100% specificity.
  • * Dried plasma samples offer a practical alternative for HBV detection and management, particularly in developing countries where traditional sampling methods may be less accessible.
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