9 results on '"Rodseth, Reitze"'
Search Results
2. Unique Gene Expression Profiles within South Africa Are Associated with Varied Chemotherapeutic Responses in Conventional Osteosarcoma.
- Author
-
Mthethwa, Phakamani G., Arumugam, Thilona, Ramsuran, Veron, Gokul, Anmol, Rodseth, Reitze, and Marais, Leonard
- Subjects
OSTEOSARCOMA ,RESEARCH funding ,OSTEOBLASTS ,MULTIPLE regression analysis ,POLYMERASE chain reaction ,GLYCOPROTEINS ,QUANTITATIVE research ,DESCRIPTIVE statistics ,CANCER chemotherapy ,MESSENGER RNA ,ODDS ratio ,LONGITUDINAL method ,GENE expression ,DNA methylation ,GENE expression profiling ,CARTILAGE cells ,DNA repair ,HISTOLOGICAL techniques ,CARCINOGENESIS ,CONFIDENCE intervals ,DATA analysis software ,COMPARATIVE studies ,IMMUNITY - Abstract
Simple Summary: This study aimed to determine the gene expression profiles associated with chemotherapeutic responses in conventional osteosarcomas (COS) within South Africa. We observed a significant downregulation in the ATP binding cassette subfamily C members (ABCC3 and ABCB1-p-glycoprotein), excision repair cross-complimenting group 1 (ERCC 1), replication factor C subunit 1 (RFC1), and tumour protein 53 (p53) genes in the COS tumours compared to the healthy donors. Furthermore, an upregulated ERCC1 gene expression level predicted a poor chemotherapeutic response. Additionally, the predictors of COS chemotherapeutic response comprised age, chondroblastic and osteoblastic histological subtypes, and ABCC3, ERCC1, and RFC1 gene expression. Background: We determined the predictive gene expression profiles associated with chemo-response in conventional osteosarcomas (COS) within South Africa. Materials and methods: In 28 patients, we performed an RNA extraction, cDNA synthesis, and quantitative analysis using the RT-PCR 2
−∆∆CT method to determine the fold change in gene expression alongside GAPDH (housekeeping gene). Results: We observed a significant downregulation in the mRNA expression profiles of ABCB1-p-glycoprotein (p = 0.0007), ABCC3 (p = 0.002), ERCC1 (p = 0.007), p-53 (p = 0.007), and RFC1 (p = 0.003) in the COS patients compared to the healthy donors. Furthermore, ABCB1-p-glycoprotein (p = 0.008) and ABCC3 (p = 0.020) exhibited a significant downregulation in the COS tumour tissues when compared to the healthy donors. In our univariate logistic regression, the predictors of chemotherapeutic response comprised ERCC1 [restricted cubic spline (RCS) knot: OR −0.27; CI −0.504 to −0.032; p = 0.036]; osteoblastic subtype [OR −0.36; CI −0.652 to −0.092; p = 0.026); fibroblastic subtype [OR 0.91; CI 0.569 to 1.248; p < 0.001]; and mixed subtype [OR 0.53; CI 0.232 to 0.032; p = 0.032]. In our multivariable logistic regression, the significant predictors of chemotherapeutic response comprised age [RCS knot: OR −2.5; CI −3.616 to −1.378; p = 0.022]; ABCC3 [RCS knot: OR 0.67; CI 0.407 to 0.936, p = 0.016]; ERCC1 [RCS knot: OR 0.57; CI 0.235 to 0.901; p = 0.044]; RFC1 [RCS knot: OR −1.04; CI −1.592 to −0.487; p = 0.035]; chondroblastic subtype [OR −0.83; CI −1.106 to −0.520; p = 0.012]; and osteoblastic subtype [OR −1.28; CI −1.664 to −0.901; p = 0.007]. Conclusions: In this South African cohort, we observed the unique gene expression profiles of osteosarcoma tumourigenesis and chemotherapeutic responses. These may serve as prognostication and therapeutic targets. Larger-scale research is needed on the African continent. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
3. Method of Anesthesia and Perioperative Risk Factors, Maternal Anesthesia Complications, and Neonatal Mortality Following Cesarean Delivery in Africa: A Substudy of a 7-Day Prospective Observational Cohort Study.
- Author
-
Gerber, Carmen, Bishop, David G., Dyer, Robert A., Maswime, Salome, Rodseth, Reitze N., van Dyk, Dominique, Kluyts, Hyla-Louise, Mbwele, Bernard, Tumukunde, Janat T., Madzimbamuto, Farai D., Elkhogia, Abdulaziz M., Ndonga, Andrew K., Ngumi, Zipporah W. W., Omigbodun, Akinyinka O., Amanor-Boadu, Simbo D., Zoumenou, Eugène, Basenero, Apollo, Munlemvo, Dolly M., Coulibaly, Youssouf, and Ndayisaba, Gabriel
- Published
- 2024
- Full Text
- View/download PDF
4. The pathophysiological impact of intra-abdominal hypertension in pigs
- Author
-
Wise, Robert, primary, Rodseth, Reitze, additional, Párraga-Ros, Ester, additional, Latorre, Rafael, additional, López Albors, Octavio, additional, Correa-Martín, Laura, additional, M. Sánchez-Margallo, Francisco, additional, Eugenia Candanosa-Aranda, Irma, additional, Poelaert, Jan, additional, Castellanos, Gregorio, additional, and L. N. G. Malbrain, Manu, additional
- Published
- 2023
- Full Text
- View/download PDF
5. Analysis of a 5‐year, evidenced‐based, rational blood utilisation project in a South African regional hospital.
- Author
-
Wise, Robert, Hood, Kirsten, Bishop, David, Sharp, Gary, Rodseth, Reitze, Allorto, Nikki, Haffejee, Saleem, Serfontein, Charles, Hansa, Nafeesa, Gangaloo, Amanda, Vather, Ash, Singh, Shireen, Chamane, Thopo, and Mabhida, Moffat
- Subjects
RESOURCE-limited settings ,BLOOD products ,ERYTHROCYTES ,CHANGE management ,BLOOD transfusion reaction ,HOSPITAL personnel - Abstract
Background: Blood products are a lifesaving but limited resource, particularly in resource‐limited settings. Evidence‐based transfusion criteria tailored to local hospitals have shown great promise in reducing costs, minimising shortages, and ameliorating the morbidity and mortality associated with liberal blood product usage. We implemented the "Saving Blood, Saving Lives" project to: promote responsible blood product use and reduce blood product ordering inefficiencies and expenditure. Methods: A comprehensive change management programme, preceded by 3 months of clinical department consultation and training, was implemented. A new evidence‐based protocol for blood product utilisation was developed, together with an accountability form. This form was used in monthly audit meetings to refine policies, identify new problems, improve communication, and to drive hospital staff accountability and training. The primary measure of the programme's success was the change in the number of red cell concentrate units ordered. Results: Project implementation required minimal time and no additional budget or staff. Annual red cell concentrate usage reduced from 7211 units in year one to 4077 units in year 5 (p < 0.001). Similar reductions were seen in freeze‐dried plasma and platelet usage, as well as administrative costs. Total project saving, adjusted to baseline admission numbers, amounted to over R46 million ($2.5 million). Conclusions: As a change management programme centred the "Saving Blood, Saving Lives" project, was able to significantly reduce blood product‐related administration and expenditure by implementing evidence‐based transfusion criteria. The programme is simple, replicable and cost effective, making it ideally suited for use in resource‐constrained environments. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
6. Readmission and inhospital death 1 year after COVID‐19 hospitalization in South Africa
- Author
-
Rodseth, Reitze, primary, Maslo, Caroline, additional, Laubscher, Anchen, additional, and Friedland, Richard, additional
- Published
- 2023
- Full Text
- View/download PDF
7. An Evaluation of Severe Anesthetic-Related Critical Incidents and Risks From the South African Paediatric Surgical Outcomes Study: A 14-Day Prospective, Observational Cohort Study of Pediatric Surgical Patients.
- Author
-
Cronje, Larissa FCA, Torborg, Alexandra M. FCA, Meyer, Heidi M. FRCA, Bhettay, Anisa Z. FCA, MMed, Diedericks, Johan B.J.S., Cilliers, Celeste FCA, Kluyts, Hyla-Louise DMed (Anaest), Mrara, Busisiwe FCA, Cert Crit Care, Kalipa, Mandisa N. FCA, MMed, Cloete, Esther FCA, Burke, Annemie FCA, MMed, Mogane, Palesa N. FCA, MMed, Alphonsus, Christella S. FCA, MMED, Mbeki, Motselisi FCA, Thomas, Jennifer FCA, MMed, Rodseth, Reitze N., and Biccard, Bruce M.
- Published
- 2022
- Full Text
- View/download PDF
8. Preoperative testing and medical therapy intervention to improve perioperative outcomes in noncardiac surgical patients
- Author
-
Alphonsus, Christella, Biccard, Bruce, and Rodseth Reitze
- Subjects
Medicine - Abstract
Introduction: Cardiovascular disease is the leading cause of death worldwide and a growing concern in low-and-middle income countries, including those in Africa. Patients with cardiovascular disease often have poorly managed chronic conditions in the African setting, which impacts their outcome when they present for non-cardiac surgery. This cohort has an increased risk of perioperative cardiovascular complications. This series of studies explored evidence-based perioperative cardiovascular management strategies in patients with high-risk cardiac comorbidities presenting for non-cardiac surgery. Methods: This was achieved through five objectives which formed five separate but interconnected research studies. The first objective was to study the approach of natriuretic peptide-directed medical therapy in non-surgical patients to inform development of a preoperative protocol in surgical patients through a systematic review. The second objective was to conduct systematic review on exercise therapy in nonsurgical patients to inform development of a preoperative protocol in surgical patients. The third objective was to define the population who would need optimisation before surgery in the Western Cape, South Africa through a prospective observational study of risk stratification. The fourth objective was to explore the broader applicability of perioperative cardiovascular management of high-risk patients by examining cardiovascular outcomes after surgery on the African continent (a sub-study of a larger African cohort study). The fifth objective was to produce national guidelines on cardiovascular risk stratification in a South African and African surgical population. Main results: The systematic reviews showed potential utility for exercise therapy in the optimisation of cardiac patients for non-cardiac surgery. Medical therapy optimisation guided by natriuretic peptide testing did not demonstrate a consistent reduction in natriuretic peptides, but did support a potential mortality benefit in non-surgical patients. The cohort of cardiac patients presenting for non-cardiac surgery in the Western Cape carries significant cardiac risk and needs perioperative cardiovascular management. This was confirmed by the rate of adverse cardiovascular outcomes reported on the African continent. These data supported the development of context-specific national cardiovascular risk stratification guidelines. Conclusion: The cardiovascular burden and risk for perioperative cardiovascular complications presents a challenge in low- and middle-income countries like South Africa, and more broadly Africa. This is a growing phenomenon which needs the collaborative effort of perioperative physicians and the implementation of evidence-based strategies in perioperative cardiovascular management.
- Published
- 2023
9. Changes in patient-reported outcomes during admission to a South African psychiatric facility.
- Author
-
Motshudi L, Hann CD, Kloppers M, Luhandjula T, Phalatse T, Pretorius D, Smith D, Smith M, van der Westhuizen M, and Rodseth RN
- Abstract
Background: Patient-reported outcome measures (PROMs) are used as part of clinical practice to determine the impact of the condition and treatment interventions on a patient's health and quality of life. The Patient Health Questionnaire-9 (PHQ-9) is a self-administered diagnostic tool that has been widely adopted for the detection and monitoring of depression., Aim: This analysis reports the change in PHQ-9 scores from admission to discharge in patients admitted for depression to a South African acute psychiatric facility and aims to quantify the treatment effect of the admission using the PHQ-9 as the measurement tool., Setting: South African acute psychiatric facility., Methods: This was a retrospective observational study of all patients admitted to Netcare Akeso acute psychiatric facilities from 01 January 2018 to 31 October 2022. Patients were included if they were ≥ 18 years of age, admitted with a primary International Classification of Disease (ICD)-10 code for depression (i.e. F32-F33) and fully completed both an admission and discharge PHQ-9 questionnaire. We excluded facilities focusing only on the treatment of patients with specialised conditions such as addiction or eating disorders., Results: This analysis included 13 308 patients admitted for depression at 10 different facilities. The median PHQ-9 score on admission was 19 (interquartile range [IQR] 14-23) and 5 (IQR 2-11) on discharge, with a median change of -12 (IQR -5 to -18). A minimal clinically important difference was seen in 87.6% patients ( n = 10 091/11 515); a treatment effect was seen in 74.5% of patients and a clinically significant improvement was seen in 72.1% of patients., Conclusion: With the average patient reporting a four-fold reduction in the severity of their depression scores, PROMs provide a critical patient-centred window into the benefit that an inpatient admission has on those suffering with depression., Contribution: These changes are consistent with those seen internationally and provide a baseline for understanding the treatment efficacy of an inpatient admission for the treatment of depression., Competing Interests: The authors declare that they have no financial or personal relationship(s) that may have inappropriately influenced them in writing this article., (© 2024. The Authors.)
- Published
- 2024
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.