1.EGCG as a therapeutic agent: a systematic review of recent advances and challenges in nanocarrier strategies.
Chee Ning WONG ; Yang Mooi LIM ; Kai Bin LIEW ; Yik-Ling CHEW ; Ang-Lim CHUA ; Siew-Keah LEE
Journal of Zhejiang University. Science. B 2025;26(7):633-656
Epigallocatechin-3-gallate (EGCG), a bioactive polyphenol abundant in green tea, has garnered significant attention for its diverse therapeutic applications, ranging from antioxidant and anti-inflammatory effects to potential anticancer properties. Despite its immense promise, the practical utilization of EGCG in therapeutic settings as a medication has been hampered by inherent limitations of this drug, including poor bioavailability, instability, and rapid degradation. This review comprehensively explores the current challenges associated with the application of EGCG and evaluates the potential of nanoparticle-based formulations in addressing these limitations. Nanoparticles, with their unique physicochemical properties, offer a platform for the enhanced stability, bioavailability, and targeted delivery of EGCG. Various nanoparticle strategies, including polymeric nanoparticle, micelle, lipid-based nanocarrier, metal nanoparticle, and silica nanoparticle, are currently employed to enhance EGCG stability and pharmacological activity. This review concludes that the particle sizes of most of these formulated nanocarriers fall within 300 nm and their encapsulation efficiency ranges from 51% to 97%. Notably, the pharmacological activities of EGCG-loaded nanoparticles, such as antioxidative, anti-inflammatory, anticancer, and antimicrobial effects, are significantly enhanced compared to those of free EGCG. By critically analyzing the existing literature and highlighting recent advancements, this article provides valuable insights into the promising prospects of nanoparticle-mediated EGCG formulations, paving the way for the development of more effective and clinically viable therapeutic strategies.
Animals
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Humans
;
Anti-Inflammatory Agents/administration & dosage*
;
Antineoplastic Agents/administration & dosage*
;
Antioxidants/administration & dosage*
;
Biological Availability
;
Catechin/analogs & derivatives*
;
Micelles
;
Particle Size
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Nanoparticle Drug Delivery System/chemistry*
2.A review on mechanistic actions of epigallocatechin-3-gallate in targeting the ominous octet of type 2 diabetes mellitus.
Chee Ning WONG ; Yang Mooi LIM ; Kai Bin LIEW ; Yik-Ling CHEW ; Ang-Lim CHUA ; Siew-Keah LEE
Journal of Integrative Medicine 2025;23(4):344-356
Epigallocatechin-3-gallate (EGCG), a prominent plant-based catechin predominantly derived from Camellia sinensis and widely available on the market as a health supplement, has garnered significant attention for its potential therapeutic benefits, particularly in the context of type 2 diabetes mellitus (T2DM). This review explores the multifaceted role of EGCG in addressing the "ominous octet"-the 8 core pathophysiological defects associated with T2DM. The literature search was carried out using key terms "EGCG" OR "epigallocatechin-3-gallate" OR "epigallocatechin gallate" AND "diabetes" OR "insulin resistance" OR "hyperglycemia" in the PubMed and Scopus databases. The search was constrained to articles published between January 2018 and April 2024, focusing on the document type. Full-text articles published in English and relevant to EGCG that featured a single active ingredient, included clearly explained diabetes relief mechanism, and included ominous octet aspects were included in the final review. The outcomes of the included studies were reviewed and categorized based on 8 core pathophysiological defects, collectively referred to as the ominous octet in T2DM. This review concludes that EGCG is a potent hypoglycemic agent that has beneficial effects against the ominous octet in addition to its pharmacological activities in modulating gut microbiota dysbiosis, carbohydrate digestion and metabolism, glucose transporter-mediated intestinal glucose-uptake, endothelial dysfunction, and renal damage that are significantly associated with pathogenesis of T2DM. This extensive scientific evidence suggests that EGCG may offer a novel approach to traditional antidiabetic therapies, potentially improving glycemic control and mitigating complications associated with T2DM. The inhibitory effects of EGCG on sodium-glucose transport proteins and their role in reducing renal glucose reabsorption remain unexplored, highlighting a significant research gap. Future research should also aim to broaden the scope by investigating the "egregious eleven," which comprise a more comprehensive range of diabetic pathophysiological features. This review underscores the therapeutic promise of EGCG for managing T2DM and encourages ongoing research to fully elucidate its clinical applications. Please cite this article as: Wong CN, Lim YM, Liew KB, Chew YL, Chua AL, Lee SK. A review on mechanistic actions of epigallocatechin-3-gallate in targeting the ominous octet of type 2 diabetes mellitus. J Integr Med. 2025; 23(4): 344-356.
Diabetes Mellitus, Type 2/physiopathology*
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Humans
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Catechin/therapeutic use*
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Hypoglycemic Agents/therapeutic use*
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Animals
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Insulin Resistance
3.Prevalence of hypogonadism among males with type 2 diabetes mellitus in a Malaysian tertiary hospital: A cross-sectional study.
Kang WAYE HANN ; Nor Azmi KAMARUDDIN ; Norlela SUKOR
Journal of the ASEAN Federation of Endocrine Societies 2025;40(2):47-55
OBJECTIVE
Previous studies have indicated that clinical hypogonadism is common among males with type 2 diabetes mellitus (T2DM). However, the reported prevalence varies due to the diverse diagnostic criteria used in these studies. This study aims to determine the prevalence of clinical hypogonadism among Malaysian T2DM males and their associated factors.
METHODOLOGYA total of 360 participants who fulfilled the inclusion criteria were included in this study. Their socio-demographic and clinical parameters were documented and a total testosterone level was sampled from a morning fasting serum. Patients with serum total testosterone of 8-12 nmol/L had their serum total testosterone repeated and their symptoms assessed with the Aging Male Symptoms (AMS) scale. Clinical hypogonadism was diagnosed with total testosterone 26.
RESULTSThe prevalence of clinical hypogonadism among Malaysian T2DM males was 17.5% (n = 63), with 55.6% of them having hypogonadotropic hypogonadism. There is a significant association between clinical hypogonadism with waist circumference > 94 cm (p < 0.001), obesity (p < 0.001), hypertension (p = 0.010), coronary artery disease (p = 0.014) and peripheral artery disease (p = 0.022). There is a significant difference in the weight (p = 0.001), BMI (p < 0.001), waist circumference P < 0.001), serum HDL-C levels (p < 0.001), serum triglycerides levels (p = 0.001) and serum TyG index (p < 0.001). Diabetic males with increasing age (adjusted OR = 1.070, 95% CI 1.004-1.146, p = 0.038), presence of coronary artery diseases (adjusted OR = 2.08, 95% CI 1.220-10.219, p = 0.020) and low total testosterone (adjusted OR = 2.451, 95% CI 1.908-3.155, p < 0.001) are at higher risk of developing clinical hypogonadism.
CONCLUSIONThis study is the first in the Asian region to use stricter criteria for diagnosing hypogonadism. Despite these stringent criteria, the prevalence of hypogonadism remains significantly high among Malaysian T2DM males. It is particularly common in diabetic males over 35 years old with coronary artery disease, regardless of A1c control and the duration of diabetes.
Human ; Hypogonadism ; Diabetes Mellitus, Type 2 ; Testosterone ; Prevalence
4.Cross-education Effects of Wrist Flexor Strengthening on Grip Strength: Comparison of Eccentric and Concentric Training
Eng Chuan Tan ; Zuo-En Chan ; Muhammad Noh Zulfikri Mohd Jamali ; Mahadevi Barathi
Malaysian Journal of Medicine and Health Sciences 2024;20(No.2):71-75
Introduction: Time away from training and competition from sport injuries may lead to detrimental effects on muscle
strength and endurance. The cross-education effect plays an important role in preserving strength during recovery
and rehabilitation; however, the effects have been found to be inconclusive. In addition, the distinct impacts of eccentric and concentric strengthening exercises need to be explored. The objective of this study was to compare the
cross-education effects of eccentric and concentric wrist flexor strengthening exercises on hand grip strength among
recreational athletes. Methods: A total of 39 recreational athletes aged between 18-25 years old were randomly assigned into two groups of wrist flexor strengthening exercise: eccentric (ECC) and concentric (CON) training groups.
The training period for the study was 4 weeks with 3 sessions of strengthening exercises per week. Handgrip strength
was measured bilaterally, before and after the intervention using the JAMAR handgrip dynamometer. Results: Significant increases in hand grip strength were observed for the ECC and CON groups in both the trained and untrained
hands following 4 weeks of training. However, the handgrip strength between the two groups in the untrained hand
was not significantly different (p=0.64). The strength gain in the untrained hand was 9.8% and 10.8%, for ECC and
CON groups, respectively. Conclusion: The cross-education effect was significant in improving strength in the untrained hand. There was no difference in strength gains between concentric and eccentric strength training.
5.Bat coronavirus was detected positive from insectivorous bats in Krau Wildlife Reserve Forest
Siew, Z.Y. ; Lai, Z.J. ; Ho, Q.Y. ; Ter, H.C. ; Ho, S.H. ; Wong, S.T. ; Gani, M. ; Leong, P.P. ; Voon, K.
Tropical Biomedicine 2023;40(No.4):462-470
Bats are flying mammals with unique immune systems that allow them to hold many pathogens.
Hence, they are recognised as the reservoir of many zoonotic pathogens. In this study, we performed
molecular detection to detect coronaviruses, paramyxoviruses, pteropine orthoreoviruses and dengue
viruses from samples collected from insectivorous bats in Krau Reserve Forest. One faecal sample from
Rhinolophus spp. was detected positive for coronavirus. Based on BLASTN, phylogenetic analysis and
pairwise alignment-based sequence identity calculation, the detected bat coronavirus is most likely to
be a bat betacoronavirus lineage slightly different from coronavirus from China, Philippines, Thailand
and Luxembourg. In summary, continuous surveillance of bat virome should be encouraged, as Krau
Reserve Forest reported a wide spectrum of biodiversity of insectivorous and fruit bats. Moreover,
the usage of primers for the broad detection of viruses should be reconsidered because geographical
variations might possibly affect the sensitivity of primers in a molecular approach.
6.Orally Disintegrating Film: A Review of Its Formulation and Manufacturing Method
Kai Bin Liew ; Ganesan Gobal ; Hanifah Mohd Rofiq ; Hiu Ching Phang ; Siew-Keah Lee ; Long Chiau Ming ; A.B.M. Helal Uddin ; Yik Ling Chew ; Vijayakumar Lakshminarayanan
Malaysian Journal of Medicine and Health Sciences 2023;19(No.6):297-303
Oral route drug delivery system is still considered as the most convenient and patient friendly drug delivery route.
Over the decades, many research has been performed to improve the functionality oral dosage form. Orally disintegrating film (ODF) is a newer oral drug delivery system, which is in the form of a thin film that will disintegrate in
the oral cavity within a matter of seconds. The aim of this review paper is to recap ODF, its benefits, formulation
contents and manufacturing method. With more research and development work has been conducted on ODF, the
dosage form is expected to be manufactured and scaled up to be commercializable products to be sold in the market.
7.Isolation and identification of multidrug-resistant Escherichia coli from cattle, sheep, poultry and human in Cumilla, Bangladesh
Md Abul Fazal ; Chandan Nath ; Md Sirazul Islam ; F M Yasir Hasib ; Md Moktadir Billah Reza ; Himadri Shankar Devnath ; Md Nahid-Ibn-Rahman ; Abdul Ahad
Malaysian Journal of Microbiology 2022;18(2):227-234
Aims:
Antimicrobial resistance (AMR) is a significant public health concern of modern civilization. The potential risk of AMR is significant in terms of both human and animal health. This study aims to assess the antimicrobial resistance pattern of selected antimicrobials against Escherichia coli of animal, poultry and human origin in the Cumilla district of Bangladesh.
Methodology and results:
A total of 200 samples were collected from different sources. Isolation and identification of commensal E. coli were performed following standard bacteriological and molecular techniques. Antimicrobial susceptibility testing was performed following the Kirby-Bauer disc diffusion technique. Ampicillin, tetracycline and sulfamethoxazole-trimethoprim resistance genes were detected by polymerase chain reactions (PCR). A total of 152 (76%; 95% confidence interval (CI) 70-81%) E. coli were isolated from cattle, sheep, chicken and human, where 37.5% of isolates were found to be multidrug-resistant (MDR). In the cultural sensitivity test, E. coli showed the highest resistance to sulfamethoxazole-trimethoprim (71%), tetracycline (63%), ampicillin (62%), where gentamicin (23%) showed the lowest resistance, followed by ceftriaxone (26%). The prevalence of resistance genes like blaTEM, tetA, tetB, tetC, sul1 and sul2 were 100%, 95%, 11%, 8%, 58% and 52%, respectively.
Conclusion, significance and impact of study
The emergence of multidrug-resistant commensal E. coli and resistance genes circulating in animals, poultry and humans limit the treatment options for serious infections.
Escherichia coli
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Drug Resistance, Multiple, Bacterial
8. Genomic characterization of velogenic avian orthoavulavirus 1 isolates from poultry workers: Implications to emergence and its zoonotic potential towards public health
Muhammad Zubair SHABBIR ; Masood RABBANI ; Ruth Helmus NISSLY ; Levina LIM ; Shubhada K. CHOTHE ; Murugan SUBBIAH ; Bhushan M JAYARAO ; Suresh V. KUCHIPUDI ; Abdul AHAD ; Aswathy SEBASTIAN ; Istvan ALBERT ; Aziz UL-RAHMAN
Asian Pacific Journal of Tropical Medicine 2021;14(2):64-72
Objective: To carry out the genetic characterization and evolutionary analysis of three avian orthoavulavirus 1 (AOAV-1) isolates from poultry workers with respiratory symptoms. Methods: Using Illumina MiSeq, whole-genome sequencing was carried out to assess the evolutionary dynamics of three AOAV-1 isolates. A phylogenetic and comparative analysis of all coding genes was done using bioinformatics tools. Results: Phylogenetic analysis and genetic distance estimation suggested a close relationship among human- and avian-originated velogenic strains of genotype XIII, sub-genotype XIII.2.1. Several substitutions in the significant structural and biological motifs were exclusively identified in the human-originated strains. Conclusions: To our knowledge, this is the first report of a velogenic AOAV-1 isolate from natural infection of the human upper respiratory tract. Our findings highlight the evolution and zoonotic potential of velogenic AOAV-1 in a disease endemic setting.
9. Prevalence and risk factors of Blastocystis infection among underprivileged communities in rural Malaysia
Nabilah Amelia MOHAMMAD ; Tengku Shahrul ANUAR ; Hesham M. AL-MEKHLAFI ; Hesham M. AL-MEKHLAFI ; Norhayati MOKTAR ; Tengku Shahrul ANUAR
Asian Pacific Journal of Tropical Medicine 2017;10(5):491-497
Objectives To determine the prevalence and risk factors of Blastocystis among underprivileged communities living in rural Malaysia. Methods This cross-sectional study was conducted among 253 participants aged between 1 and 85 years. Stool samples were examined using Wheatley's trichrome stain after in-vitro cultivation in Jones' medium to detect the presence of Blastocystis. Information pertaining to the demography, socioeconomic and environment were collected using pre-validated questionnaires. Results The total prevalence of Blastocystis infection was 40.7%. The multiple logistic regression analysis revealed that age ≥15 years (OR = 2.72; 95% CI = 1.47–5.04) and presence of infected family members (OR = 8.56; 95% CI = 4.47–16.38) were the significant risk factors associated with blastocystosis in these communities. Conclusions Blastocystosis is revealed through this study to be still prevalent among Orang Asli communities in rural Malaysia. The two main approaches that should be implemented by the public health authority in battling this infection would be the screening of other family members and giving treatment to the infected individuals. Moreover, it is imperative for health education on good personal and food hygiene practices are provided in order to reduce the morbidity and transmission of Blastocystis infection among the Orang Asli in their communities meaningfully.
10.Castleman disease.
Ibrahiem SAEED-ABDUL-RAHMAN ; Ali M AL-AMRI
Korean Journal of Hematology 2012;47(3):163-177
Castleman and Towne described a disease presenting as a mediastinal mass resembling thymoma. It is also known as "giant lymph node hyperplasia", "lymph node hamartoma", "angiofollicular mediastinal lymph node hyperplasia", and "angiomatous lymphoid hyperplasia". The pathogenesis is unknown, but the bulk of evidence points toward faulty immune regulation, resulting in excessive B-lymphocyte and plasma-cell proliferation in lymphatic tissue. In addition to the mediastinal presentation, extrathoracic involvement in the neck, axilla, mesentery, pelvis, pancreas, adrenal gland, and retroperitoneum also have been described. There are 2 major pathologic variations of Castleman disease: (1) hyaline-vascular variant, the most frequent, characterized by small hyaline-vascular follicles and capillary proliferation; and (2) the plasma-cell variant, in which large lymphoid follicles are separated by sheets of plasma cells. The hyaline-vascular cases usually are largely asymptomatic, whereas the less common plasma-cell variant may present with fever, anemia, weight loss, and night sweats, along with polyclonal hypergamma-globulinemia. Castleman disease is a rare lymphoproliferative disorders. Few cases have been described world widely. In this article we reviewed the classification, pathogenesis, pathology, radiological features and up to date treatment with special emphasis on the role of viral stimulation, recent therapeutic modalities and the HIV-associated disease.
Adrenal Glands
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Anemia
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Axilla
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B-Lymphocytes
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Capillaries
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Fever
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Giant Lymph Node Hyperplasia
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HIV
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Lymph Nodes
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Lymphoid Tissue
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Lymphoproliferative Disorders
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Mesentery
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Neck
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Pancreas
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Pelvis
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Plasma Cells
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Sweat
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Thymoma
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Weight Loss


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