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Cogo E, Elsayed M, Liang V, Cooley K, Guerin C, Psihogios A, Papadogianis P. Probiotics Evaluation in Oncological Surgery: A Systematic Review of 36 Randomized Controlled Trials Assessing 21 Diverse Formulations. Curr Oncol 2021; 28:5192-5214. [PMID: 34940074 PMCID: PMC8700227 DOI: 10.3390/curroncol28060435] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/24/2021] [Accepted: 12/03/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Objectives were to evaluate probiotics safety and efficacy in oncological surgery. METHODS Systematic review methodology guided by Cochrane, PRISMA, SWiM, and CIOMS. Protocol registered on PROSPERO (CRD42018086168). RESULTS 36 RCTs (on 3305 participants) and 6 nonrandomized/observational studies were included, mainly on digestive system cancers. There was evidence of a beneficial effect on preventing infections, with 70% of RCTs' (21/30) direction of effect favoring probiotics. However, five RCTs (17%) favored controls for infections, including one trial with RR 1.57 (95% CI: 0.79, 3.12). One RCT that changed (balanced) its antibiotics protocol after enrolling some participants had mortality risk RR 3.55 (95% CI: 0.77, 16.47; 7/64 vs. 2/65 deaths). The RCT identified with the most promising results overall administered an oral formulation of Lactobacillus acidophilus LA-5 + Lactobacillus plantarum + Bifidobacterium lactis BB-12 + Saccharomyces boulardii. Methodological quality appraisals revealed an overall substantial risk-of-bias, with only five RCTs judged as low risk-of-bias. CONCLUSIONS This large evidence synthesis found encouraging results from most formulations, though this was contrasted by potential harms from a few others, thus validating the literature that "probiotics" are not homogeneous microorganisms. Given microbiome developments and infections morbidity, further high-quality research is warranted using those promising probiotics identified herein.
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Affiliation(s)
- Elise Cogo
- Patterson Institute for Integrative Oncology Research, Canadian College of Naturopathic Medicine, 1255 Sheppard Ave. E., Toronto, ON M2K 1E2, Canada; (E.C.); (M.E.); (V.L.); (C.G.); (A.P.); (P.P.)
| | - Mohamed Elsayed
- Patterson Institute for Integrative Oncology Research, Canadian College of Naturopathic Medicine, 1255 Sheppard Ave. E., Toronto, ON M2K 1E2, Canada; (E.C.); (M.E.); (V.L.); (C.G.); (A.P.); (P.P.)
| | - Vivian Liang
- Patterson Institute for Integrative Oncology Research, Canadian College of Naturopathic Medicine, 1255 Sheppard Ave. E., Toronto, ON M2K 1E2, Canada; (E.C.); (M.E.); (V.L.); (C.G.); (A.P.); (P.P.)
| | - Kieran Cooley
- Patterson Institute for Integrative Oncology Research, Canadian College of Naturopathic Medicine, 1255 Sheppard Ave. E., Toronto, ON M2K 1E2, Canada; (E.C.); (M.E.); (V.L.); (C.G.); (A.P.); (P.P.)
- School of Public Health, Australian Research Centre in Complementary and Integrative Medicine (ARCCIM), University of Technology Sydney, Ultimo 2007, Australia
- Pacific College of Health Sciences, San Diego, CA 92108, USA
- National Centre for Naturopathic Medicine, Southern Cross University, Lismore 2480, Australia
- Correspondence:
| | - Christilynn Guerin
- Patterson Institute for Integrative Oncology Research, Canadian College of Naturopathic Medicine, 1255 Sheppard Ave. E., Toronto, ON M2K 1E2, Canada; (E.C.); (M.E.); (V.L.); (C.G.); (A.P.); (P.P.)
| | - Athanasios Psihogios
- Patterson Institute for Integrative Oncology Research, Canadian College of Naturopathic Medicine, 1255 Sheppard Ave. E., Toronto, ON M2K 1E2, Canada; (E.C.); (M.E.); (V.L.); (C.G.); (A.P.); (P.P.)
- The Centre for Health Innovation, 429 MacLaren St., Ottawa, ON K2P 0M7, Canada
| | - Peter Papadogianis
- Patterson Institute for Integrative Oncology Research, Canadian College of Naturopathic Medicine, 1255 Sheppard Ave. E., Toronto, ON M2K 1E2, Canada; (E.C.); (M.E.); (V.L.); (C.G.); (A.P.); (P.P.)
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