Medicine and Health Sciences Commons^™

Response To Chen Et. Al, Albert Stuart Reece, Gary Kenneth Hulse

Research outputs 2022 to 2026

Whilst our paper was published in three parts to assist with readability it is essentially a single report. Our analysis moves logically from continuous and categorical bivariate studies to inverse probability weighted multivariate (IPWM) and then geospatiotemporal analysis and finally statistical analysis of geospatiotemporal models. Context is important. As stated by Chen and colleagues IPWM models are very powerful and present compelling conclusions and have the effect of transforming ecological into pseudo-randomized studies from which it is entirely proper to draw causal conclusions. That this report follows similar earlier IPWM and geotemporospatial reports on the commonest cancer in adults and …

Experiences Of Participants In A Clinical Trial Of A Novel Radioactive Treatment For Advanced Prostate Cancer: A Nested, Qualitative Longitudinal Study, Bianca Viljoen, Michael S. Hofman, Suzanne K. Chambers, Jeff Dunn, Haryana M. Dhillon, Ian D. Davis, Nicholas Ralph

Research outputs 2022 to 2026

Objectives: Qualitative studies nested within clinical trials can provide insight into the treatment experience, how this evolves over time and where improved supportive care is required. The purpose of this qualitative study is to describe the lived experiences of men with advanced prostate cancer participating in the TheraP trial; a randomised trial of 177Lu-PSMA-617 compared with cabazitaxel chemotherapy. Methods: Fifteen men with advanced prostate cancer were recruited from the TheraP clinical trial with interviews conducted at three timepoints during the trial. An interpretative phenomenological approach was used, and interviews analysed using thematic analysis. This research paper reports the results from …

Social Ecological Influences On Treatment Decision-Making In Men Diagnosed With Low Risk, Localised Prostate Cancer, Megan Mcintosh, Melissa J. Opozda, Camille E. Short, Daniel A. Galvão, Rebecca Tutino, Michael Diefenbach, Behfar Ehdaie, Christian Nelson

Research outputs 2022 to 2026

Objective: Individuals diagnosed with low risk, localised prostate cancer (PCa) face a difficult decision between active surveillance (AS) and definitive treatment. We aimed to explore perceived influences on treatment decision-making from the patient and partner's perspectives. Methods: Patients (and partners) who met AS criteria and had chosen their treatment were recruited. Semi-structured individual interviews were conducted via telephone to explore experiences of diagnosis, impact on patient lifestyle, experiences with physicians, treatment preferences/choice, treatment information understanding and needs, and overall decision-making process. Interviews were audio recorded, transcribed verbatim, and analysed using Reflexive Thematic Analysis. Results: Twenty-four male patients (18 chose AS) …

Impact Of Different Unconditional Monetary Incentives On Survey Response Rates In Men With Prostate Cancer: A 2-Arm Randomised Trial, Megan Mcintosh, Melissa J. Opozda, Michael O’Callaghan, Andrew D. Vincent, Daniel A. Galvão, Camille E. Short

Research outputs 2022 to 2026

Background:

Men are often viewed as a difficult group to recruit for psychological research, including in psycho-oncology. Whilst research has demonstrated the effectiveness of small monetary incentives for encouraging research participation, little research has examined different large unconditional incentive amounts. Larger unconditional incentives may result in increased participation of men in psychological research. This randomised study within a case–control trial of men diagnosed with early-stage prostate cancer aimed to investigate whether (a) response rates to a 30-min questionnaire completed via mail, online, or phone would vary with different unconditional incentive amounts, and (b) demographics would vary in those who responded …

Modulating Tumour Hypoxia In Prostate Cancer Through Exercise: The Impact Of Redox Signalling On Radiosensitivity, Malcolm Brown, Amélie Rébillard, Nicolas H. Hart, Dominic O’Connor, Gillian Prue, Joe M. O’Sullivan, Suneil Jain

Research outputs 2022 to 2026

Prostate cancer is a complex disease affecting millions of men globally. Radiotherapy (RT) is a common treatment modality although treatment efficacy is dependent upon several features within the tumour microenvironment (TME), especially hypoxia. A hypoxic TME heightens radioresistance and thus disease recurrence and treatment failure continues to pose important challenges. However, the TME evolves under the influence of factors in systemic circulation and cellular crosstalk, underscoring its potential to be acutely and therapeutically modified. Early preclinical evidence suggests exercise may affect tumour growth and some of the benefits drawn, could act to radiosensitise tumours to treatment. Intracellular perturbations in skeletal …

Myokine Expression And Tumor-Suppressive Effect Of Serum Following 12 Weeks Of Exercise In Prostate Cancer Patients On Adt, Jin-Soo Kim, Rebekah Louise Wilson, Dennis Taaffe, Daniel A. Galvao, Elin S. Gray, Robert Newton

Research outputs 2014 to 2021

Purpose:

Although several mechanisms have been proposed for the tumor-suppressive effect of exercise, little attention has been given to myokines, even though skeletal muscle is heavily recruited during exercise resulting in myokine surges. We measured resting serum myokine levels before and after an exercise-based intervention and the effect of this serum on prostate cancer cell growth.

Methods:

Ten prostate cancer patients undertaking androgen deprivation therapy (age, 73.3 ± 5.6 yr) undertook a 12-wk exercise-based intervention including supervised resistance training, self-directed aerobic exercise, and protein supplementation. Body composition was assessed by dual-energy x-ray absorptiometry and muscle strength by the one-repetition maximum …

Associations Of Fat And Muscle Mass With Overall Survival In Men With Prostate Cancer: A Systematic Review With Meta-Analysis, Pedro Lopez, Robert U. Newton, Dennis R. Taaffe, Favil Singh, Laurien M. Buffart, Nigel Spry, Colin Tang, Fred Saad, Daniel A. Galvao

Research outputs 2014 to 2021

Background

To systematically review and analyse the associations between fat and muscle mass measures with overall survival in men with prostate cancer.

Methods

A systematic search was conducted in CINAHL, Cochrane Library, EMBASE, PubMed, and Web of Science databases from inception to December 2020, while abstracts from the American Society of Clinical Oncology (ASCO), Clinical Oncology Society of Australia (COSA), and the American College of Sports Medicine (ACSM) conferences were searched from 2014 to 2020. Eligible articles examined the association of body composition measures, such as fat mass (e.g., fat mass, visceral adipose tissue (VAT), subcutaneous adipose tissue (SAT), and …

Exercise In Advanced Prostate Cancer Elevates Myokine Levels And Suppresses In-Vitro Cell Growth, Jin Soo Kim, Dennis R. Taaffe, Daniel A. Galvão, Nicolas H. Hart, Elin Gray, Charles J. Ryan, Stacey A. Kenfield, Fred Saad, Robert U. Newton

Research outputs 2022 to 2026

Background:

Altering the systemic milieu through exercise has been proposed as a potential mechanism underlying exercise-driven tumour suppression. It is not yet known whether men with advanced prostate cancer can elicit such adaptations following a program of exercise. The purpose is to examine myokine levels of serum acquired from metastatic castrate-resistant prostate cancer (mCRPC) patients recruited to the INTERVAL-GAP4 trial before and after 6 months of exercise and its tumour-suppressive effect.

Methods:

Twenty-five men with mCRPC (age = 74.7 ± 7.1 yrs) were randomised to supervised multimodal (aerobic and resistance) exercise (EX) or self-directed exercise control group (CON). Body composition …

Exercise In Preventing Falls For Men With Prostate Cancer: A Modelled Cost-Utility Analysis, Kim Edmunds, Paul Scuffham, Robert U. Newton, Daniel A. Galvão, Haitham Tuffaha

Research outputs 2022 to 2026

Introduction:

Men who receive androgen deprivation therapy (ADT) for prostate cancer (PCa) are a vulnerable falls population due to the side effects of treatment. The purpose of this paper is to determine the cost-effectiveness of exercise in preventing falls and fractures for this high-risk population in Australia.

Methods:

A decision analytic model was constructed to evaluate the cost utility of an exercise intervention compared to usual care from a health system perspective. The intervention comprised two 1-h sessions of supervised exercise per week over 1 year for men with non-metastatic PCa receiving curative radiation therapy and ADT. A Markov model …

Why Do Men With Prostate Cancer Discontinue Active Surveillance For Definitive Treatment? A Mixed Methods Investigation, Megan Mcintosh, Melissa J. Opozda, Michael O’Callaghan, Andrew D. Vincent, Daniel A. Galvão, Camille E. Short

Research outputs 2022 to 2026

Objectives: To explore the personal and/or medical reasons patients on active surveillance (AS) have, or consider having, further definitive treatment for their prostate cancer. Research suggests up to 50% of patients on AS will discontinue within 5 years, though reasons for discontinuation from the patient's perspective is under-explored. Methods: Prostate cancer patients who were or had been on AS for at least 6 months were recruited. A questionnaire assessed reasons for receiving/considering definitive treatment and the extent to which reasons were personal or medical. Clinical information was extracted from a state-level population registry. A subset of participants were interviewed to …