Jacques Raubenheimer

Dr. Jacques Raubenheimer

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Research Focus & Metrics

Academic Career Length

11Years (2016-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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5 March 2019 in Toxins
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Journal Article
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PAPolianna Lemos Moura Moreira Albuquerque
Polianna Lemos Moura Moreira Albuquerque
GJGeraldo Silva Junior
Geraldo Silva Junior
GMGdayllon Cavalcante Meneses
Gdayllon Cavalcante Meneses
AMAlice Maria Costa Martins
Alice Maria Costa Martins
DLDanya Bandeira Lima
Danya Bandeira Lima
EDElizabeth De Francesco Daher
Elizabeth De Francesco Daher
Acute kidney injury (AKI) following snakebite is common in developing countries and Bothrops genus is the main group of snakes in Latin America. To evaluate the pathogenic mechanisms associated with Bothrops venom nephrotoxicity, we assessed urinary and blood samples of patients after hospital admission resulting from Bothrops snakebite in a prospective cohort study in Northeast Brazil. Urinary and blood samples were evaluated during hospital stay in 63 consenting patients, divided into AKI and No-AKI groups according to the KDIGO criteria. The AKI group showed higher levels of urinary MCP-1 (Urinary monocyte chemotactic protein-1) (median 547.5 vs. 274.1 pg/mgCr; p = 0.02) and urinary NGAL (Neutrophil gelatinase-associated lipocalin) (median 21.28 vs. 12.73 ng/mgCr; p = 0.03). Risk factors for AKI included lower serum sodium and hemoglobin levels, proteinuria and aPTT (Activated Partial Thromboplastin Time) on admission and disclosed lower serum sodium (p = 0.01, OR = 0.73, 95% CI: 0.57–0.94) and aPTT (p = 0.031, OR = 26.27, 95% CI: 1.34–512.11) levels as independent factors associated with AKI. Proteinuria showed a positive correlation with uMCP-1 (r = 0.70, p < 0.0001) and uNGAL (r = 0.47, p = 0.001). FENa (Fractional Excretion of sodium) correlated with uMCP-1 (r = 0.47, P = 0.001) and uNGAL (r = 0.56, p < 0.0001). sCr (serum Creatinine) showed a better performance to predict AKI (AUC = 0.85) in comparison with new biomarkers. FEK showed fair accuracy in predicting AKI (AUC = 0.92). Coagulation abnormality was strongly associated with Bothrops venom-related AKI. Urinary NGAL and MCP-1 were good biomarkers in predicting AKI; however, sCr remained the best biomarker. FEK (Fractional Excretion of potassium) emerged as another diagnostic tool to predict early AKI. Positive correlations between uNGAL and uMCP-1 with proteinuria and FENa may signal glomerular and tubular injury. Defects in urinary concentrations highlighted asymptomatic abnormalities, which deserve further study.

6 July 2018 in South African Journal of Clinical Nutrition
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Journal Article
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MRMaretha le Roux
Maretha le Roux
CWCorinna Walsh
Corinna Walsh
MRMarianne Reid
Marianne Reid
JRJacques Raubenheimer
Jacques Raubenheimer
Introduction: Type 2 diabetes mellitus (T2DM) is a global health problem with high morbidity and mortality in patients who are mostly still economically active. The growing incidence and health implications for those affected make T2DM a major public health issue. Objectives: To compile a demographic, anthropometric and knowledge, attitude and practices (KAP) profile of adult patients with T2DM in the public health sector of the Free State province, South Africa. Design: A descriptive observational study was conducted. Setting: A total of 255 participants attending public health facilities in the Free State were interviewed. Outcome Measures: Questionnaires were completed in an interview to determine demographics and KAP. Anthropometric measurements were obtained by standard techniques. Results: The majority of the participants (n = 222; 87.1%) were black women from urban areas, who were overweight and obese. The median age at diagnosis was 48 years (range 15–80 years), and 25 participants (9.8%) lacked formal schooling. In 212 participants (83.1%), a waist circumference above cut-off points was observed. Only half of the participants knew the normal range for blood glucose. Approximately 80% felt that they would be a different person if they did not have diabetes. Although 96.1% of participants were knowledgeable about the benefits of physical exercise, only 31.0% reported exercising on a daily basis. A statistically significant association was found between knowledge and attitudes, indicating that better knowledge about diabetes could be associated with a more positive attitude towards diabetes. Conclusion: Poor knowledge, a negative attitude and poor practices related to diabetes were observed in a very high percentage of participants, which may contribute to morbidity and mortality. The fact that knowledge was associated with attitude indicates that interventions aimed at improving knowledge could benefit patients in more than one way. Interventions to equip patients to successfully manage their condition are urgently required.

17 September 2024 in BMC Global and Public Health
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JRJacques Raubenheimer
Jacques Raubenheimer
PMPieter Hermanus Myburgh
Pieter Hermanus Myburgh
Akshaya BhagavathulaAkshaya Bhagavathula
Akshaya Bhagavathula
Off-label use of semaglutide for non-diabetic weight loss (which regulators have linked to social media promotion) created worldwide supply shortages. We evaluated worldwide semaglutide interest measured by online search behavior to gauge social media and conventional print media reporting’s effect on search interest. Using Google Trends Extended for Health (GTEH) multiple sampling, we retrieved regional online interest (ROI) for all countries and extracted timelines and top search queries for January 2021–August 2023 for countries with median ROI ≥ 20 using the “semaglutide” topic. We obtained semaglutide media reporting from the ProQuest database. We estimated the effect of media and within-country semaglutide interest on between-country interest with Granger causality analysis. We determined changepoints for trends within each country with joinpoint regression. We determined prominent themes in search queries for each country with natural language processing thematic analysis. Twenty-seven countries were included. Most countries showed an increase in semaglutide interest over time, with Canada and the USA showing the largest sustained interest. Most of the search interest arose from 2022 onwards. Granger’s analysis showed that media coverage could only partially explain interest, and interest in some countries partially preceded interest in others, with the UK and Germany showing strong relationships between news reports and lagged search interest. Joinpoint analysis identified up to four significant within-country changepoints. Most countries showed significant positive weekly trends in 2021–2022, although uptrends in search interest varied considerably between countries. One episode of the Dr. Oz show (TV media event) coincided with strong peaks in numerous countries. Natural language processing of top search queries showed some agreement between countries and country-specific themes. Weight loss was a major theme in most countries, while a diabetes theme was generally absent or weak. Some countries (Australia, Chile, South Africa, UK) had themes for buying Ozempic from (named) local retailers, and Germany had a theme related to buying Ozempic without a script. GTEH data provided insights into global search interest in semaglutide and regional variation. Studies focusing on specific countries which include social media data can elucidate specific drivers behind the surge in off-label use of semaglutide.

11 July 2018 in South African Family Practice
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Journal Article
Open access
ANA Nair
A Nair
WSWj Steinberg
Wj Steinberg
THT Habib
T Habib
HSH Saeed
H Saeed
JRJacques Raubenheimer
Jacques Raubenheimer
Background: Healthcare-associated infections (HCAIs) are a well-known public health threat; however, published data on the endemic burden of HCAIs in sub-Saharan Africa are limited. This study aimed to determine the prevalence of primary bloodstream infection (PBSI), surgical site infection (SSI), lower respiratory tract infection (LRTI) and urinary tract infection (UTI) at Kimberley Hospital Complex (KHC), Northern Cape. Methods: A one-day pointprevalence survey was conducted between February 2016 and March 2016 on all patients admitted to 15 selected wards at KHC. The Standardised Centers for Disease Control and National Nosocomial Infection Surveillance Systems criteria were used. Results: A total of 326 patients were surveyed and the overall HCAI prevalence rate was 7.67%. This included 4.60% SSIs, 1.53% UTIs, 0.92% PBSIs and 0.92% LRTIs. Patients with HCAI stayed a mean of 20.8 days compared with 9.1 days for the remaining patients. Almost 75% (n = 240) of the surveyed patients had one or more recognised risk factors. The most isolated microorganism among the 11 microorganisms isolated was Klebsiella pneumoniae (36.4%). Half (54.5%) of the isolated organisms were resistant to penicillin. At the time of the survey, 42.0% of all the patients were on antimicrobials of which amoxicillin/clavulanic acid was most commonly prescribed (29.9%). Conclusion: The overall HCAI prevalence rate found in KHC is encouraging, but the prevalence of SSI is of concern. Further studies are needed to identify risk factors and target this as an area where preventative interventions can be implemented.

1 May 2021 in Software Impacts
Verified
Journal Article
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JRJacques Raubenheimer
Jacques Raubenheimer

2 October 2024 in Clinical Toxicology
Verified
Journal Article
Open access
RCRose Cairns
Rose Cairns
FNFirouzeh Noghrehchi
Firouzeh Noghrehchi
JRJacques Raubenheimer
Jacques Raubenheimer
KCKate M. Chitty
Kate M. Chitty
Geoffrey IsbisterGeoffrey Isbister
Geoffrey Isbister
NBNicholas A. Buckley
Nicholas A. Buckley
Poisoning is a leading cause of morbidity and mortality that is increasing in many countries. Better data are needed to understand epidemiology and outcomes of poisoning. This work describes a new poisoning data linkage cohort in New South Wales, Australia (population approximately 8 million). This is a longitudinal health record linkage, 2011-2020, including data from: ambulance call-outs, emergency department presentations, hospital admissions, death registrations, the poisons centre, and four tertiary toxicology units. Individuals with poisoning, venomous animal/plant exposures, or adverse drug reaction events were included. There were 845,217 linkable events relating to 400,642 ambulance, 688,484 emergency department, 682,013 admission, 40,456 toxicology, and 11,879 death records. There were 572,841 people with events; the median age at the time of first event was 57 years, and 51.9% were female. Events leading to patient admission were most commonly adverse drug reactions (n = 511,263), intentional poisonings (n = 68,646), unintentional poisonings (n = 54,840) and animal/plant exposures (n = 11,092). Demographics varied by cause: intentional poisoning (median age 33 years, 64% female); unintentional poisoning/animals/plants (median age 43 years, 45%); and adverse drug reactions (median age 70 years, 54%). Adolescent females had highest rates of intentional poisoning, while unintentional poisoning had a bimodal distribution, highest in children <5 years old and males aged 20 to 50 years. Substance use disorders were documented comorbidities for 44% of intentional poisoning, 29% of unintentional poisoning, and 13% of adverse drug reaction-related admissions; mood disorders were documented for 54%, 17% and 10% of these admissions, respectively. Poisonings and hospitalised adverse drug reactions are common in New South Wales, affecting approximately 8% of the population in 10 years. This linkage improves understanding of poisoning risks and outcomes in Australia. This novel data linkage provides a unique opportunity to study poisoning across multiple settings for an individual over an extended period.