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Fulltext Gut Microbiota Composition in the First and Third Trimester of Pregnancy among Malay Women is Associated with Body Mass Index: A Pilot Study

Abdullah B, Idorus MY, Daud S, Aazmi S, Pillai TK, Zain ZM

Malays J Med Sci, 2023 Feb;30(1):116-128.
PMID: 36875193 DOI: 10.21315/mjms2023.30.1.10

BACKGROUND: This study has analysed the pattern of gut microbiota during the first and third trimesters among pregnant Malay women.
METHODS: This was a pilot prospective observational study involving 12 pregnant Malay women without any endocrine disorders and on neither antibiotics nor probiotics. Demographic details and anthropometric measurements were obtained, and the faecal 16S ribosomal ribonucleic acid (rRNA) metagenome microbiota of the first and third trimesters (T1 and T3) were analysed. Univariate and multivariate statistics, partial least squares discriminant analysis (PLSDA) and Kendall rank correlation testing were used to identify key genera and associations with pregnancy trimester and body mass index (BMI).
RESULTS: The most abundant phyla were Bacteroidetes, Firmicutes, Proteobacteria and Actinobacteria, with significant differences in composition at the genus level demonstrated between T1 and T3. Sequencing showed a statistically significant difference in beta diversity between normal and abnormal BMI at all taxonomic ranks (R 2 = 0.60; Q 2 = 0.23) and genus levels (R 2 = 0.57; Q 2 = 0.37). The relative abundances of Akkermansia (P < 0.05; false discovery rate [FDR] < 0.05), Olsenella (P < 0.05; FDR < 0.05) and Oscillospira (P < 0.05; FDR < 0.05) were found to be significantly higher in normal BMI cases by 2.4, 3.4 and 3.1 times, respectively.
CONCLUSION: Three genera (Akkermansia, Olsenella and Oscillospira) were correlated with normal BMI during pregnancy. All three could be promising biotherapeutic targets in body weight regulation during pregnancy, subsequently reducing complications associated with higher BMI.
Blastocystis colonization among inland and forest periphery Negritos in Malaysia: The crucial role of sanitation and hygiene practices

Rozani NS, Aazmi MS, Attah AO, Termizi FHM, Shahrizal S, Idorus MY, et al.

Parasitol Int, 2025 Apr 06.
PMID: 40199419 DOI: 10.1016/j.parint.2025.103075

There has been an increasing trend in the study of Blastocystis due to its ubiquitous nature, and potential impact on human health. In Malaysia, its prevalence among the undeserved indigenous Orang Asli (OA) population varies widely from 1.7 %- 80.0 %. These huge differences were suggested to be attributed to disparities in living standards, including sanitation and access to treated water status. We investigated the prevalence, risk factors, and subtypes of Blastocystis among the OA Negritos residing in forest periphery villages and the inland jungle settings. A cross-sectional study was conducted involving 259 participants and their stool samples were screened microscopically for intestinal parasites and molecular techniques for Blastocystis. Risk factors including the type of village category and Blastocystis subtypes were identified. Of the 259 participants, 40 (15.4 %) were found to be colonized with Blastocystis. Prevalence was higher in the inland (17/81; 21.0 %) than in forest periphery villages (23/178; 12.9 %), but the difference was not statistically significant (P = 0.096). Among the 40 positive individuals, 31 (77.5 %) were co-infected with soil-transmitted helminths (STH). Multivariate analysis identified the unavailability of a household latrine (P 
Probiotic Lactobacillus rhamnosus GG Alleviates Prehypertension and Restores Gut Health and Microbiota in NaCl-Induced Prehypertensive Rats

Zaharuddin AM, Muslim A, Aazmi S, Idorus MY, Almabhouh FA, Lim SY, et al.

Probiotics Antimicrob Proteins, 2026 Jan;18(1):488-504.
PMID: 40254701 DOI: 10.1007/s12602-025-10536-z

Probiotics could be used as adjuvant treatments in prehypertension management to restore gut microbiota dysbiosis caused by a high-salt diet. This study investigated the antihypertensive effects of the probiotic Lactobacillus rhamnosus strain GG (LGG) on high-salt diet-induced prehypertensive rats. Eighteen Sprague-Dawley rats were assigned equally into three groups: normotensive fed on a normal diet (ND), prehypertensive induced on a 4% NaCl high-salt diet (HSD), and prehypertensive induced on an HSD treated with LGG at 1 × 109 CFU daily for 8 weeks (LGG). Weekly changes in water, food, body weight, diastolic blood pressure (DBP), systolic blood pressure (SBP), and mean arterial pressure (MAP) were monitored. Serum levels of Na, K, Cl, ALB, Ca, and TP were measured at the end of treatment, along with morphological and histomorphometric changes in the small intestine. Stool samples collected before (W0) and 8 weeks after treatment (W8) were sequenced for bacterial 16S rDNA metagenomics. Probiotic LGG significantly reduces average DBP, SBP, and MAP while improving gut integrity through intact intestine morphology, higher villus heights, and a V/C ratio. At the genus level, the LGG group's gut microbiota composition is more similar to the HSD profile at W0 but shifts to the ND profile after treatment at W8. Thus, probiotic LGG lowers blood pressure indices, improves serum biochemistry profile, restores small intestinal integrity barrier, and modulates gut microbiota profile, indicating its potential as an adjuvant treatment for prehypertension and the significance of gut health in blood pressure regulation.

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