Publications by authors named "Grabowski M"

Background: Recent declines in HIV incidence among adolescent girls and young women (AGYW) in Africa are often attributed to the expansion of biomedical interventions such as antiretroviral therapy and voluntary medical male circumcision. However, changes in sexual behaviour may also play a critical role. Understanding the relative contributions of these factors is essential for developing strategies to sustain and further reduce HIV transmission.

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Background: HIV acquisition among adolescents and young adults (AYA, 15-24 years) is influenced by individual factors, community factors, and public policies and programs. We explored the association of HIV incidence and prevalence with these factors over time among AYA in Rakai, Uganda.

Methods: We examined trends over nine survey rounds (2005-2020) of the Rakai Community Cohort Study (RCCS), an open population-based surveillance cohort of individuals living in 30 continuously followed communities in south-central Uganda (n= 35,938 person rounds).

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Ginger (Zingiber officinale) is an herbaceous perennial in the Zingiberaceae family grown primarily in tropical to subtropical biomes as a culinary spice, a traditional medicine, and a landscaping plant. While ginger grows at soil temperatures above 20°C, several farmers in the upper Midwestern US farmers grows short-season ginger in high tunnels. In 2023 and 2024, growers in southeastern Minnesota reported a new disease of ginger.

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Background: In sub-Saharan Africa, pediatric and adult treatment programs have not met the needs of youth living with HIV (15-24 years), whose enrollment in antiretroviral treatment (ART) programs is much lower than that of adults. To inform targeted interventions, we analyzed factors associated with ART use among youth in Uganda.

Methods: Data were from 42 communities between 2011 and 2020 (5 survey rounds) from the Rakai Community Cohort Study, an open, population-based cohort.

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Introduction: Atrial fibrillation (AF) is the most prevalent form of cardiac arrhythmia worldwide. Early diagnosis and treatment are essential, emphasizing the need to develop novel biomarkers. Lipoprotein(a) [Lp(a)] has recently been widely investigated as a potential risk factor for various cardiovascular conditions, including AF.

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Coronary artery disease (CAD)-cardiovascular condition occuring due to atherosclerotic plaque accumulation in the epicardial arteries-is responsible for disabilities of millions of people worldwide and remains the most common single cause of death. Inflammation is the primary pathological mechanism underlying CAD, since is involved in atherosclerotic plaque formation. Glucagon-like peptide-1 (GLP-1) is a peptide hormone which role extends beyond well-known carbohydrates metabolism.

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Ischemia and non-obstructive coronary artery disease (INOCA) might be due to coronary microvascular dysfunction (CMD), vasospastic angina (VSA) or both. We compared plasma concentration of various extracellular vesicles (EVs) in patients with different INOCA endotypes. Patients were divided into those with INOCA (CMD, VSA, mixed CMD + VSA) and non-anginal chest pain.

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  • The COAPT Risk Score predicts the likelihood of death or hospitalization for heart failure within two years after undergoing transcatheter edge-to-edge repair for mitral regurgitation using the MitraClip device.
  • An international study analyzed 344 patients categorized as COAPT eligible or non-eligible based on COAPT trial criteria, finding higher risk scores associated with increased mortality and hospitalization.
  • Overall, the COAPT Score had poor predictive accuracy for both groups, showing better performance in lower-risk patients compared to higher-risk patients, suggesting the Score's effectiveness varies according to patient baseline risk.
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  • - Mitral regurgitation (MR) is the second most common heart valve disease, and severe cases often require surgical intervention, though high-risk patients may need alternative treatments like transcatheter edge-to-edge valve repair or the Tendyne valve.
  • - The Tendyne valve, which can be implanted without traditional surgery, showed promising results: 93.2% of patients had no MR after treatment, and heart failure hospitalizations significantly decreased post-surgery.
  • - An economic analysis indicated that using the Tendyne valve is cost-effective compared to medications, with a favorable cost per quality-adjusted life year, and around 60 patients annually could benefit from this treatment in Poland.
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The glioblastoma (GBM) microenvironment is enriched in immunosuppressive factors that potently interfere with the function of cytotoxic T lymphocytes. Cancer cells can directly affect the immune system, but the mechanisms driving these interactions are not completely clear. Here, we demonstrate that the polyamine metabolite spermidine (SPD) was elevated in the GBM tumor microenvironment.

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During the COVID-19 pandemic lockdown, we deployed a rapid, mobile phone-based survey to assess access and participation rates when using mobile phones to collect data on COVID-19 in Rakai, south-central Uganda. We sampled prior Rakai Community Cohort Study (RCCS) participants based on HIV status using mobile phone contacts. We administered a 30-minute phone-based interview to consenting participants to assess their knowledge about different aspects of COVID-19 and their access to care.

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Introduction: In Africa, migrants are more likely to be living with HIV and HIV viremic than nonmigrants, but less is known about HIV outcomes among nonmigrants living in households with migrants. We compared HIV outcomes in nonmigrating persons in households with and without migration.

Methods: We analyzed cross-sectional data collected between August 2016 and May 2018 from nonmigrating participants aged 15-49 years in the Rakai Community Cohort Study in Uganda.

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Background: HIV treatment programs in Africa have implemented centralized testing for routine viral load monitoring (VLM), which may result in specimen processing delays inhibiting timely return of viral load results. Decentralized, point-of-care (PoC) VLM is a promising tool for expediting HIV clinical decision-making but remains unavailable in most African settings. We qualitatively explored the perceived feasibility and appropriateness of PoC VLM to address gaps along the viral load monitoring continuum in rural Uganda.

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  • A study in Uganda from 2012 to 2019 investigated trends in HIV drug resistance during the increase of antiretroviral treatment (ART) programs, noting limited existing representative data.
  • The research found that resistance to NNRTI drugs among people starting treatment doubled over the study period, despite a decrease in overall resistance rates attributed to increased treatment access and viral suppression.
  • Key mutations contributing to this resistance were identified, with majority findings focusing on specific genetic changes, while no major mutations affecting a newer treatment drug, dolutegravir, were found.
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Anti-fatigue design in the machining process of aviation material requires advanced processes to enhance the surface integrity and a holistic model which can optimize the process aiming at maximum fatigue life. In the present study, the axial ultrasonic assisted milling process was utilized to machine the Inconel 718 while the process executes the thermomechanical cutting and peening action simultaneously. To optimize the process factors, a hybrid model using a combination of regression analysis and an analytical model was developed to correlate the machining factors, i.

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Endometriosis is a prevalent gynecological condition, affecting around 10% of reproductive-age women. Inflammatory processes associated with endometriosis may contribute to endothelial dysfunction. Increased skin accumulation of advanced glycation end-products (AGEs), reflecting arterial stiffness, potentially links endometriosis with elevated risk of cardiovascular events.

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There is limited data on human immunodeficiency virus (HIV) evolutionary trends in African populations. We evaluated changes in HIV viral diversity and genetic divergence in southern Uganda over a 24-year period spanning the introduction and scale-up of HIV prevention and treatment programs using HIV sequence and survey data from the Rakai Community Cohort Study, an open longitudinal population-based HIV surveillance cohort. (p24) and (gp41) HIV data were generated from people living with HIV (PLHIV) in 31 inland semi-urban trading and agrarian communities (1994-2018) and four hyperendemic Lake Victoria fishing communities (2011-2018) under continuous surveillance.

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  • A study was conducted in a high HIV prevalence fishing community around Lake Victoria, Uganda, to analyze the impact of COVID-19 and severe flooding on HIV risk behaviors and health outcomes.
  • Data were gathered before and after these events, showing a decline in risky sexual behaviors and an increase in access to antiretroviral therapy (ART) after the COVID lockdown.
  • The results indicated that both flooding and the pandemic led to reduced transactional sex and improved ART coverage, highlighting the need for ongoing HIV management amid natural disasters and health crises.
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  • - Familial hypercholesterolemia (FH) is a genetic disorder causing high LDL cholesterol levels, which increases the risk of heart disease; the heterozygous form affects about 1 in 500 people worldwide.
  • - A case study reported a woman with HeFH whose LDL levels did not adequately decrease with statin and ezetimibe therapies; genetic testing revealed a mutation in the LDL receptor gene.
  • - Inclisiran therapy, which uses a specialized RNA to lower LDL cholesterol, significantly reduced her cholesterol levels after three months and may be a viable option for patients who cannot tolerate traditional treatments.
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This study evaluated the relationship of non-invasive arterial stiffness parameters with an individual 10-year risk of fatal and non-fatal atherosclerotic cardiovascular disease (ASCVD) events in the cohort post-coronavirus disease 2019 (COVID-19). The study group included 203 convalescents aged 60.0 (55.

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