Exercise and the gut microbiome : implications for supportive care in cancer
- Hart, Nicholas, Wallen, Matthew, Farley, Morgan, Haywood, Darren, Boytar, Alexander, Secombe, Kate, Joseph, Ria, Chan, Raymond, Kenkhuis, Marlou-Floor, Buffart, Laurien, Skinner, Tina, Wardill, Hannah
- Authors: Hart, Nicholas , Wallen, Matthew , Farley, Morgan , Haywood, Darren , Boytar, Alexander , Secombe, Kate , Joseph, Ria , Chan, Raymond , Kenkhuis, Marlou-Floor , Buffart, Laurien , Skinner, Tina , Wardill, Hannah
- Date: 2023
- Type: Text , Journal article , Review
- Relation: Supportive Care in Cancer Vol. 31, no. 12 (2023), p.
- Relation: http://purl.org/au-research/grants/nhmrc/1194051
- Full Text: false
- Reviewed:
- Description: Purpose: Growing recognition of the gut microbiome as an influential modulator of cancer treatment efficacy and toxicity has led to the emergence of clinical interventions targeting the microbiome to enhance cancer and health outcomes. The highly modifiable nature of microbiota to endogenous, exogenous, and environmental inputs enables interventions to promote resilience of the gut microbiome that have rapid effects on host health, or response to cancer treatment. While diet, probiotics, and faecal microbiota transplant are primary avenues of therapy focused on restoring or protecting gut function in people undergoing cancer treatment, the role of physical activity and exercise has scarcely been examined in this population. Methods: A narrative review was conducted to explore the nexus between cancer care and the gut microbiome in the context of physical activity and exercise as a widely available and clinically effective supportive care strategy used by cancer survivors. Results: Exercise can facilitate a more diverse gut microbiome and functional metabolome in humans; however, most physical activity and exercise studies have been conducted in healthy or athletic populations, primarily using aerobic exercise modalities. A scarcity of exercise and microbiome studies in cancer exists. Conclusions: Exercise remains an attractive avenue to promote microbiome health in cancer survivors. Future research should elucidate the various influences of exercise modalities, intensities, frequencies, durations, and volumes to explore dose-response relationships between exercise and the gut microbiome among cancer survivors, as well as multifaceted approaches (such as diet and probiotics), and examine the influences of exercise on the gut microbiome and associated symptom burden prior to, during, and following cancer treatment. © 2023, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
Oogenesis in Caenorhabditis elegans
- Davis, Gregory, Hipwell, Hayleigh, Boag, Peter
- Authors: Davis, Gregory , Hipwell, Hayleigh , Boag, Peter
- Date: 2023
- Type: Text , Journal article , Review
- Relation: Sexual Development Vol. 17, no. 2-3 (2023), p. 73-83
- Full Text:
- Reviewed:
- Description: Background: The nematode, Caenorhabditis elegans has proven itself as a valuable model for investigating metazoan biology. C. elegans have a transparent body, an invariant cell lineage, and a high level of genetic conservation which makes it a desirable model organism. Although used to elucidate many aspects of somatic biology, a distinct advantage of C. elegans is its well annotated germline which allows all aspects of oogenesis to be observed in real time within a single animal. C. elegans hermaphrodites have two U-shaped gonad arms which produce their own sperm that is later stored to fertilise their own oocytes. These two germlines take up much of the internal space of each animal and germ cells are therefore the most abundant cell present within each animal. This feature and the genetic phenotypes observed for mutant worm gonads have allowed many novel findings that established our early understanding of germ cell dynamics. The mutant phenotypes also allowed key features of meiosis and germ cell maturation to be unveiled. Summary: This review will focus on the key aspects that make C. elegans an outstanding model for exploring each feature of oogenesis. This will include the fundamental steps associated with germline function and germ cell maturation and will be of use for those interested in exploring reproductive metazoan biology. Key Messages: Since germ cell biology is highly conserved in animals, much can be gained from study of a simple metazoan like C. elegans. Past findings have enhanced understanding on topics that would be more laborious or challenging in more complex animal models. © 2023 The Author(s). Published by S. Karger AG, Basel.
- Authors: Davis, Gregory , Hipwell, Hayleigh , Boag, Peter
- Date: 2023
- Type: Text , Journal article , Review
- Relation: Sexual Development Vol. 17, no. 2-3 (2023), p. 73-83
- Full Text:
- Reviewed:
- Description: Background: The nematode, Caenorhabditis elegans has proven itself as a valuable model for investigating metazoan biology. C. elegans have a transparent body, an invariant cell lineage, and a high level of genetic conservation which makes it a desirable model organism. Although used to elucidate many aspects of somatic biology, a distinct advantage of C. elegans is its well annotated germline which allows all aspects of oogenesis to be observed in real time within a single animal. C. elegans hermaphrodites have two U-shaped gonad arms which produce their own sperm that is later stored to fertilise their own oocytes. These two germlines take up much of the internal space of each animal and germ cells are therefore the most abundant cell present within each animal. This feature and the genetic phenotypes observed for mutant worm gonads have allowed many novel findings that established our early understanding of germ cell dynamics. The mutant phenotypes also allowed key features of meiosis and germ cell maturation to be unveiled. Summary: This review will focus on the key aspects that make C. elegans an outstanding model for exploring each feature of oogenesis. This will include the fundamental steps associated with germline function and germ cell maturation and will be of use for those interested in exploring reproductive metazoan biology. Key Messages: Since germ cell biology is highly conserved in animals, much can be gained from study of a simple metazoan like C. elegans. Past findings have enhanced understanding on topics that would be more laborious or challenging in more complex animal models. © 2023 The Author(s). Published by S. Karger AG, Basel.
Defining timeliness in care for patients with lung cancer : a scoping review
- Ansar, Adnan, Lewis, Virginia, McDonald, Christine, Liu, Chaojie, Rahman, Muhammad Aziz
- Authors: Ansar, Adnan , Lewis, Virginia , McDonald, Christine , Liu, Chaojie , Rahman, Muhammad Aziz
- Date: 2022
- Type: Text , Journal article , Review
- Relation: BMJ Open Vol. 12, no. 4 (2022), p.
- Full Text:
- Reviewed:
- Description: Objectives Early diagnosis and reducing the time taken to achieve each step of lung cancer care is essential. This scoping review aimed to examine time points and intervals used to measure timeliness and to critically assess how they are defined by existing studies of the care seeking pathway for lung cancer. Methods This scoping review was guided by the methodological framework for scoping reviews by Arksey and O'Malley. MEDLINE, EMBASE, CINAHL and PsycINFO electronic databases were searched for articles published between 1999 and 2019. After duplicate removal, all publications went through title and abstract screening followed by full text review and inclusion of articles in the review against the selection criteria. A narrative synthesis describes the time points, intervals and measurement guidelines used by the included articles. Results A total of 2113 articles were identified from the initial search. Finally, 68 articles were included for data charting process. Eight time points and 14 intervals were identified as the most common events researched by the articles. Eighteen different lung cancer care guidelines were used to benchmark intervals in the included articles; all were developed in Western countries. The British Thoracic Society guideline was the most frequently used guideline (20%). Western guidelines were used by the studies in Asian countries despite differences in the health system structure. Conclusion This review identified substantial variations in definitions of some of the intervals used to describe timeliness of care for lung cancer. The differences in healthcare delivery systems of Asian and Western countries, and between high-income countries and low-income-middle-income countries may suggest different sets of time points and intervals need to be developed. ©
- Authors: Ansar, Adnan , Lewis, Virginia , McDonald, Christine , Liu, Chaojie , Rahman, Muhammad Aziz
- Date: 2022
- Type: Text , Journal article , Review
- Relation: BMJ Open Vol. 12, no. 4 (2022), p.
- Full Text:
- Reviewed:
- Description: Objectives Early diagnosis and reducing the time taken to achieve each step of lung cancer care is essential. This scoping review aimed to examine time points and intervals used to measure timeliness and to critically assess how they are defined by existing studies of the care seeking pathway for lung cancer. Methods This scoping review was guided by the methodological framework for scoping reviews by Arksey and O'Malley. MEDLINE, EMBASE, CINAHL and PsycINFO electronic databases were searched for articles published between 1999 and 2019. After duplicate removal, all publications went through title and abstract screening followed by full text review and inclusion of articles in the review against the selection criteria. A narrative synthesis describes the time points, intervals and measurement guidelines used by the included articles. Results A total of 2113 articles were identified from the initial search. Finally, 68 articles were included for data charting process. Eight time points and 14 intervals were identified as the most common events researched by the articles. Eighteen different lung cancer care guidelines were used to benchmark intervals in the included articles; all were developed in Western countries. The British Thoracic Society guideline was the most frequently used guideline (20%). Western guidelines were used by the studies in Asian countries despite differences in the health system structure. Conclusion This review identified substantial variations in definitions of some of the intervals used to describe timeliness of care for lung cancer. The differences in healthcare delivery systems of Asian and Western countries, and between high-income countries and low-income-middle-income countries may suggest different sets of time points and intervals need to be developed. ©
Diet and exercise advice and referrals for cancer survivors : an integrative review of medical and nursing perspectives
- Joseph, Ria, Hart, Nicolas, Bradford, Natalie, Agbejule, Oluwaseyifunmi, Koczwara, Bogda, Chan, Alexandre, Wallen, Matthew, Chan, Raymond
- Authors: Joseph, Ria , Hart, Nicolas , Bradford, Natalie , Agbejule, Oluwaseyifunmi , Koczwara, Bogda , Chan, Alexandre , Wallen, Matthew , Chan, Raymond
- Date: 2022
- Type: Text , Journal article , Review
- Relation: Supportive Care in Cancer Vol. 30, no. 10 (2022), p. 8429-8439
- Full Text:
- Reviewed:
- Description: Purpose: To examine the perspectives of medical and nursing health professionals concerning their roles and responsibilities in providing dietary and exercise advice to cancer survivors, and referrals to allied health professionals. Methods: An integrative review. PubMed, CINAHL, PsycINFO, Embase, Web of Science databases, and bibliographies of relevant studies were searched from December 2011 to June 2021. All studies were eligible for inclusion. The Mixed-Methods Appraisal Tool (MMAT) was used to critically appraise included studies. Data were extracted and synthesised regarding the perspectives of medical and nursing health professionals on their roles, responsibilities, barriers, and facilitators. Results: Twenty-one studies involving 3401 medical and nursing health professionals and 264 cancer survivors of diverse cancer types were included. Ten quantitative, nine qualitative, and two mixed-methods studies were eligible. All included studies met at least 80% of the quality criteria in the MMAT. Major findings include the following: (1) medical and nursing health professionals were unclear on their roles in providing dietary and exercise advice to cancer survivors but agreed they play a key role in referrals to dietitians and exercise professionals; (2) most cancer survivors valued the involvement of their general practitioner when receiving dietary and exercise advice. Conclusion: Although medical and nursing health professionals understand that referrals to allied health professionals form part of their role, there is a lack of clarity regarding their roles to provide dietary and exercise advice to cancer survivors. Future studies should address barriers and facilitators of dietary and exercise advice and referral by medical and nursing health professionals. © 2022, Crown.
- Authors: Joseph, Ria , Hart, Nicolas , Bradford, Natalie , Agbejule, Oluwaseyifunmi , Koczwara, Bogda , Chan, Alexandre , Wallen, Matthew , Chan, Raymond
- Date: 2022
- Type: Text , Journal article , Review
- Relation: Supportive Care in Cancer Vol. 30, no. 10 (2022), p. 8429-8439
- Full Text:
- Reviewed:
- Description: Purpose: To examine the perspectives of medical and nursing health professionals concerning their roles and responsibilities in providing dietary and exercise advice to cancer survivors, and referrals to allied health professionals. Methods: An integrative review. PubMed, CINAHL, PsycINFO, Embase, Web of Science databases, and bibliographies of relevant studies were searched from December 2011 to June 2021. All studies were eligible for inclusion. The Mixed-Methods Appraisal Tool (MMAT) was used to critically appraise included studies. Data were extracted and synthesised regarding the perspectives of medical and nursing health professionals on their roles, responsibilities, barriers, and facilitators. Results: Twenty-one studies involving 3401 medical and nursing health professionals and 264 cancer survivors of diverse cancer types were included. Ten quantitative, nine qualitative, and two mixed-methods studies were eligible. All included studies met at least 80% of the quality criteria in the MMAT. Major findings include the following: (1) medical and nursing health professionals were unclear on their roles in providing dietary and exercise advice to cancer survivors but agreed they play a key role in referrals to dietitians and exercise professionals; (2) most cancer survivors valued the involvement of their general practitioner when receiving dietary and exercise advice. Conclusion: Although medical and nursing health professionals understand that referrals to allied health professionals form part of their role, there is a lack of clarity regarding their roles to provide dietary and exercise advice to cancer survivors. Future studies should address barriers and facilitators of dietary and exercise advice and referral by medical and nursing health professionals. © 2022, Crown.
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