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Rosemary (Rosmarinus officinalis L.) improves biochemical outcomes in diabetes mellitus: a systematic review and meta-analysis of animal studies

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Abstract

We report on the systematic review and meta-analysis concerning the efficacy of R. officinalis in treating diabetes mellitus (DM) in animals. This study followed the PRISMA guideline and the protocol was registered in PROSPERO (CRD42021250556). The research was duplicated in the PubMed, Scopus, ScienceDirect, Web of Science, and Virtual Health Library (VHL) databases until December 31st, 2022. No restrictions have been set for language publication. Twenty-three (23) experimental studies of type-1 diabetes mellitus (T1DM) met the eligibility criteria and were included in the qualitative analysis, whereas eighteen (18) underwent a meta-analysis. The R. officinalis derivatives significantly decreased fasting plasma glucose (MD: −120.84 [95% CI; −157.09, −84.59]); increased insulin release (MD; +3.73 [95% CI; +3.17, +4.29]); dwindled blood urea nitrogen (MD: −24.84 [95% CI; −34.78, −14.90]) and creatinine (MD: −0.40 [95% CI; −0.74, −0.06]) levels; and ameliorated liver function or repaired liver damage by decreasing ALT (MD: −36.42; [95% CI; −55.69, −17.14]) and AST (MD: −24.05 [95% CI; −37.84, −10.27]) enzyme levels compared to vehicle control group. Moreover, R. officinalis derivatives improved the lipid profile of diabetic animals by reducing LDL-c levels (MD: −11.74 [95% CI; −21.27, −2.21]). R. officinalis is a nutraceutical that may help in the management of T1DM and its complications. However, some gaps need to be taken into account for this evidence. Greater attention is needed for an analytical standardization of Rosemary extracts besides the demand for high-quality clinical studies dealing with the efficacy of this phytomedicine.

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Abbreviations

Alb:

Albumin

ALP:

Alkaline phosphatase

ALT:

Alanine aminotransferase

AST:

Aspartate aminotransferase

AUR:

Uric acid

BUN:

Blood urea nitrogen

CAMARADES:

Collaborative Approach to Meta Analysis and Review of Animal Experimental Studies

CI:

Confidence interval

CRE:

Creatinine

D.O.I:

Digital Object Identifier System

DeCS:

Health Sciences Descriptors

DM:

Diabetes mellitus

FPG:

Fasting plasma glucose

HbA1c:

Serum glycated hemoglobin

HDL-c:

High density lipoprotein cholesterol

LDL-c:

Low density lipoprotein cholesterol

MD:

Mean difference

MeSH:

Medical Subject Headings

OS:

Oxidative stress

PRISMA:

Preferred Reporting Items for Systematic Reviews and Meta-Analyses

RevMan:

Review Manager software

ROs:

Reactive oxygen species

SD:

Standard deviation

SIL:

Serum insulin level

SYRCLE:

Systematic Review Center for Laboratory animal Experimentation

T1DM:

Type-1 diabetes mellitus

T2DM:

Type-2 diabetes mellitus

TC:

Total cholesterol

Tg:

Total triglycerides

VHL:

Virtual Health Library

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Acknowledgements

We appreciate Dr. Zbys Fedorowicz (Veritas Health Sciences Consultancy) and Gesner Francisco Xavier Junior (librarian of the Medical School – Federal University of Minas Gerais) for their valuable support with the review protocol.

Funding

Virgínia Moura Oliveira received a scientific initiation grant (PIBIC) from the Universidade Federal de São João del- Rei and Fundação de Amparo à Pesquisa do Estado de Minas Gerais (UFSJ/FAPEMIG; grant number 21092). Kitete Tunda Bunnel received a Master’s grant from the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brazil (CAPES; grant number 88887.824838/2023-0). This study was also funded in part by the CAPES - Financial Code 001.

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Authors and Affiliations

Authors

Contributions

ROC: Conceptualization, Funding acquisition, Project administration, Supervision, Writing—review & editing; NRB and CPD: Methodology, Formal analysis, Software, Writing—review & editing; VMO: Data curation, Formal analysis, Investigation, Writing—original draft; LRS: Investigation, Validation; KTB and AOB: Writing—review & editing.

Corresponding author

Correspondence to Renê Oliveira do Couto.

Ethics declarations

Ethical statement

This article does not contain any studies involving animals performed by any of the authors. This article does not contain any studies involving human participants performed by any of the authors.

Conflict of interest

Virginia Moura Oliveira has no conflict of interest. Letícia Rafaela Silveira has no conflict of interest. Kitete Tunda Bunnel has no conflict of interest. Caroline Pereira Domingueti has no conflict of interest. André Oliveira Baldoni has no conflict of interest. Nayara Ragi Baldoni has no conflict of interest. Renê Oliveira do Couto has no conflict of interest.

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Oliveira, V.M., Silveira, L.R., Bunnel, K.T. et al. Rosemary (Rosmarinus officinalis L.) improves biochemical outcomes in diabetes mellitus: a systematic review and meta-analysis of animal studies. ADV TRADIT MED (ADTM) (2024). https://doi.org/10.1007/s13596-024-00742-5

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