Mohamad Halim Mohamad Shariff

Dr. Mohamad Halim Mohamad Shariff

orcid

Research Focus & Metrics

Academic Career Length

12Years (2015-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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Verified
Journal Article
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Ruth NaomiRuth Naomi
Ruth Naomi
MYMUHAMMAD DAIN YAZID
MUHAMMAD DAIN YAZID
HBHasnah Bahari
Hasnah Bahari
Yoke Keong YongYoke Keong Yong
Yoke Keong Yong
RRRetnagowri Rajandram
Retnagowri Rajandram
FOFezah Othman
Fezah Othman
BPA is one of the most common endocrine disruptors that is widely being manufactured daily nationwide. Although scientific evidence supports claims of negative effects of BPA on humans, there is also evidence suggesting that a low level of BPA is safe. However, numerous in vivo trials contraindicate with this claim and there is a high possibility of BPA exposure could lead to obesity. It has been speculated that this does not stop with the exposed subjects only, but may also cause transgenerational effects. Direct disruption of endocrine regulation, neuroimmune and signaling pathways, as well as gut microbiata, has been identified to be interrupted by BPA exposure, leading to overweight or obesity. In these instances, cardiovascular complications are one of the primary notable clinical signs. In regard to this claim, this review paper discusses the role of BPA on obesity in the perspective of endocrine disruptions and possible cardiovascular complications that may arise due to BPA. Thus, the aim of this review is to outline the changes in gut microbiota and neuroimmune or signaling mechanisms involved in obesity in relation to BPA. To identify potentially relevant articles, a depth search was done on the databases Nature, PubMed, Wiley Online Library, and Medline & Ovid from the past 5 years. According to Boolean operator guideline, selected keywords such as (1) BPA OR environmental chemical AND fat OR LDL OR obese AND transgenerational effects or phenocopy (2) Endocrine disruptors OR chemical AND lipodystrophy AND phenocopy (3) Lipid profile OR weight changes AND cardiovascular effect (4) BPA AND neuroimmune OR gene signaling, were used as search terms. Upon screening, 11 articles were finalized to be further reviewed and data extraction tables containing information on (1) the type of animal model (2) duration and dosage of BPA exposure (3) changes in the lipid profile or weight (4) genes, signaling mechanism, or any neuroimmune signal involved, and (5) transgenerational effects were created. In toto, the study indicates there are high chances of BPA exposure affecting lipid profile and gene associated with lipolysis, leading to obesity. Therefore, this scoping review recapitulates the possible effects of BPA that may lead to obesity with the evidence of current in vivo trials. The biomarkers, safety concerns, recommended dosage, and the impact of COVID-19 on BPA are also briefly described.

5 May 2023 in Antioxidants
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Journal Article
Open access
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Ruth NaomiRuth Naomi
Ruth Naomi
MYMUHAMMAD DAIN YAZID
MUHAMMAD DAIN YAZID
Soo Huat TeohSoo Huat Teoh
Soo Huat Teoh
SBSanthra Segaran Balan
Santhra Segaran Balan
MSMohamad Halim Mohamad Shariff
Mohamad Halim Mohamad Shariff
HEHashim Embong
Hashim Embong
Emerging evidence suggests that cognitive impairments may result from various factors, such as neuroinflammation, oxidative stress, mitochondrial damage, impaired neurogenesis, synaptic plasticity, blood–brain barrier (BBB) disruption, amyloid β protein (Aβ) deposition, and gut dysbiosis. Meanwhile, dietary polyphenol intake in a recommended dosage has been suggested to reverse cognitive dysfunction via various pathways. However, excessive intake of polyphenols could trigger unwanted adverse effects. Thus, this review aims to outline possible causes of cognitive impairments and how polyphenols alleviate memory loss via various pathways based on in vivo experimental studies. Thus, to identify potentially relevant articles, the keywords (1) nutritional polyphenol intervention NOT medicine AND neuron growth OR (2) dietary polyphenol AND neurogenesis AND memory impairment OR (3) polyphenol AND neuron regeneration AND memory deterioration (Boolean operators) were used in the Nature, PubMed, Scopus, and Wiley online libraries. Based on the inclusion and exclusion criteria, 36 research papers were selected to be further reviewed. The outcome of all the studies included supports the statement of appropriate dosage by taking into consideration gender differences, underlying conditions, lifestyle, and causative factors for cognitive decline, which will significantly boost memory power. Therefore, this review recapitulates the possible causes of cognitive decline, the mechanism of polyphenols involving various signaling pathways in modulating the memory, gut dysbiosis, endogenous antioxidants, bioavailability, dosage, and safety efficacy of polyphenols. Hence, this review is expected to provide a basic understanding of therapeutic development for cognitive impairments in the future.

20 April 2023 in Sports
Verified
Journal Article
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PRPurwo Sri Rejeki
Purwo Sri Rejeki
Adi PranotoAdi Pranoto
Adi Pranoto
IRIlham Rahmanto
Ilham Rahmanto
NINabilah Izzatunnisa
Nabilah Izzatunnisa
GYGhana Firsta Yosika
Ghana Firsta Yosika
MSMohamad Halim Mohamad Shariff
Mohamad Halim Mohamad Shariff
Obesity is a metabolic disease that is caused by a lack of physical activity and is associated with an increased risk of chronic inflammation. A total of 40 obese adolescent females with an average age of 21.93 ± 1.35 years and average body mass index (BMI) of 30.81 ± 3.54 kg/m2 were enrolled in this study, randomized, and divided into four groups, i.e., control (CTL; n = 10), moderate intensity aerobic training (MAT; n = 10), moderate intensity resistance training (MRT; n = 10), and moderate intensity combined aerobic–resistance training (MCT; n = 10). The enzyme-linked immunosorbent assay (ELISA) kits method was used to analyze the adiponectin and leptin levels between pre-intervention and post-intervention. Statistical analysis was conducted using a paired sample t-test, while correlation analysis between variables used the Pearson product–moment correlation test. Research data showed that MAT, MRT, and MCT significantly increased adiponectin levels and decreased leptin levels compared to the CTL (p ≤ 0.05). The results of the correlation analysis of delta (∆) data showed that an increase in adiponectin levels was significantly negatively correlated with a decrease in body weight (BW) (r = −0.671, p ≤ 0.001), BMI (r = −0.665, p ≤ 0.001), and fat mass (FM) (r = −0.694, p ≤ 0.001) and positively correlated with an increase in skeletal muscle mass (SMM) (r = 0.693, p ≤ 0.001). Whereas, a decrease in leptin levels was significantly positively correlated with a decrease in BW (r = 0.744, p ≤ 0.001), BMI (r = 0.744, p ≤ 0.001), and FM (r = 0.718, p ≤ 0.001) and negatively correlated with an increase in SMM (r = −0.743, p ≤ 0.001). In summary, it can be concluded that our data show that adiponectin levels increased and leptin levels decreased after the intervention of aerobic, resistance, and combined aerobic–resistance training.

25 April 2024 in Sports
Verified
Journal Article
Open access
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PRPurwo Sri Rejeki
Purwo Sri Rejeki
Adi PranotoAdi Pranoto
Adi Pranoto
Deandra Maharani WidiatmajaDeandra Maharani Widiatmaja
Deandra Maharani Widiatmaja
DUDita Mega Utami
Dita Mega Utami
NINabilah Izzatunnisa
Nabilah Izzatunnisa
MSMohamad Halim Mohamad Shariff
Mohamad Halim Mohamad Shariff
The integration of combined aerobic exercise and intermittent fasting (IF) has emerged as a strategy for the prevention and management of obesity, including its associated health issues such as age-related metabolic diseases. This study aimed to examine the potential of combined aerobic exercise and IF as a preventative strategy against cellular senescence by targeting mTOR and Bcl-2 levels in obese females. A total of 30 obese women, aged 23.56 ± 1.83 years, body fat percentage (FAT) 45.21 ± 3.73% (very high category), BMI 30.09 ± 3.74 kg/m2 were recruited and participated in three different types of interventions: intermittent fasting (IF), exercise (EXG), and a combination of intermittent fasting and exercise (IFEXG). The intervention program was carried out 5x/week for 2 weeks. We examined mTOR and Bcl-2 levels using ELISA kits. Statistical analysis used the one-way ANOVA test and continued with Tukey’s HSD post hoc test, with a significance level of 5%. The study results showed that a combination of aerobic exercise and IF significantly decreased mTOR levels (−1.26 ± 0.79 ng/mL) compared to the control group (−0.08 ± 1.33 ng/mL; p ≤ 0.05). However, combined aerobic exercise and IF did not affect Bcl-2 levels significantly (−0.07 ± 0.09 ng/mL) compared to the control group (0.01 ± 0.17 ng/mL, p ≥ 0.05). The IF-only group, exercise-only group, and combined group all showed a significant decrease in body weight and fat mass compared to the control group (p ≤ 0.05). However, the combined aerobic exercise and IF program had a significant effect in reducing the total percentage of body fat and fat mass compared to the IF-only group (p ≤ 0.05). Therefore, it was concluded that the combined intermittent fasting and exercise group (IFEXG) undertook the most effective intervention of the three in terms of preventing cellular senescence, as demonstrated by decreases in the mTOR level, body weight, and fat mass. However, the IFEXG did not present reduced Bcl-2 levels.

29 January 2024 in Retos
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Journal Article
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Adi PranotoAdi Pranoto
Adi Pranoto
Roy Novri RamadhanRoy Novri Ramadhan
Roy Novri Ramadhan
PRPurwo Sri Rejeki
Purwo Sri Rejeki
MMMuhammad Miftahussurur
Muhammad Miftahussurur
GYGhana Firsta Yosika
Ghana Firsta Yosika
MSMohamad Halim Mohamad Shariff
Mohamad Halim Mohamad Shariff
Reducing body weight and body fat is the primary goal for overcoming obesity. Lifestyle modifications with a non-pharmacological approach based on programmed physical exercise are recommended for increasing energy expenditure and reducing body weight and body fat. This study aims to analyze different types of exercise in reducing and maintaining body fat in obese young adult women. This study was a randomized controlled trial (RCT) with a true experimental design. A group of 28 sedentary overweight women were enlisted and provided with aerobic, strength, and mixed exercise regimens. Aerobic, resistance, and combined training programs were conducted with an intensity of 60-70% HRmax for aerobic, and 60-70% 1-RM for resistance. These sessions were performed 3x/week for 4 weeks. Measurement of body fat before-intervention and 24 hours after-intervention for 4 weeks using Seca mBCA 554. The one-way ANOVA test was utilized for statistical analysis, with a significance level of 5%. The findings demonstrated a significant reduction in body fat through all three forms of exercise, evident in the decrease in changes in body mass index, body weight, fat mass, and free fat mass (p ≤ 0.05). Additionally, all three exercise modalities led to a significant increase in changes in skeletal muscle mass in comparison to the control group (p ≤ 0.05). Our study results concluded that the combination type of exercise performed 3x/week for 4 weeks was more beneficial in lowering body fat and increasing muscle mass compared to aerobic exercise and resistance type exercise in obese young adult women. Keyword: Body fat, combined training, obesity, sedentary, healthy lifestyle

3 August 2023 in Antioxidants
Verified
Journal Article
Open access
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Ruth NaomiRuth Naomi
Ruth Naomi
Soo Huat TeohSoo Huat Teoh
Soo Huat Teoh
MSMohamad Halim Mohamad Shariff
Mohamad Halim Mohamad Shariff
HEHashim Embong
Hashim Embong
ZHZubaidah Hasain
Zubaidah Hasain
JKJaya Kumar
Jaya Kumar
Obesity is known as a transgenerational vicious cycle and has become a global burden due to its unavoidable complications. Modern approaches to obesity management often involve the use of pharmaceutical drugs and surgeries that have been associated with negative side effects. In contrast, natural antioxidants, such as flavonoids, have emerged as a promising alternative due to their potential health benefits and minimal side effects. Thus, this narrative review explores the potential protective role of flavonoids as a natural antioxidant in managing obesity. To identify recent in vivo studies on the efficiency of flavonoids in managing obesity, a comprehensive search was conducted on Wiley Online Library, Scopus, Nature, and ScienceDirect. The search was limited to the past 10 years; from the search, we identified 31 articles to be further reviewed. Based on the reviewed articles, we concluded that flavonoids offer novel therapeutic strategies for preventing obesity and its associated co-morbidities. This is because the appropriate dosage of flavonoid compounds is able to reduce adipose tissue mass, the formation of intracellular free radicals, enhance endogenous antioxidant defences, modulate the redox balance, and reduce inflammatory signalling pathways. Thus, this review provides an insight into the domain of a natural product therapeutic approach for managing obesity and recapitulates the transgenerational inheritance of obesity, the current available treatments to manage obesity and its side effects, flavonoids and their sources, the molecular mechanism involved, the modulation of gut microbiota in obesity, redox balance, and the bioavailability of flavonoids. In toto, although flavonoids show promising positive outcome in managing obesity, a more comprehensive understanding of the molecular mechanisms responsible for the advantageous impacts of flavonoids—achieved through translation to clinical trials—would provide a novel approach to inculcating flavonoids in managing obesity in the future as this review is limited to animal studies.