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Fulltext Coconut oil and cholesterol as challenge agents to induce hyperlipidemia and atherosclerosis in hamster animal model

Syarifah-Noratiqah, S.B., Zulfarina, M.S., 'Atiqah, A., Qodriyah, H.M.S., Naina-Mohamed, I., Fairus, S.

Medicine & Health, 2018;13(1):29-48.
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Hyperlipidemia is a condition of high lipid levels in the plasma and often linked with the deposition of lipid droplets in the aorta which initiate the progression of atherosclerosis. Atherosclerosis is a common cardiovascular disorder initiated by the formation of foams cells in the vascular wall which leads to turbulent blood flow, injury to the endothelial layer and subsequent vascular thrombosis. Since the early 1980’s, Golden-Syrian hamsters have been widely used as an animal model in the research of hyperlipidemia and atherosclerosis. The use of hamsters in the hyperlipidemic and atherosclerotic model is due to their lipoprotein profile that is closer to human setting, sensitive to high-fat high-cholesterol (HFHC) diet and a suitable rodent model. Atherosclerosis can be induced in hamsters through dietary challenge with HFHC diet. Over the decades, coconut oil (CNO) was commonly used as the source of fat in the diet design of high saturated fatty acids (SFA) composition. In this review, we summarized published literature with designs involving CNO plus cholesterol-induced hyperlipidemia, atherosclerosis or both. The factors that may influence the ability of CNO and cholesterol combination to induce hyperlipidemia such as the period of dietary intervention, hamster strains and the dietary amount were evaluated and summarized.
Fulltext Food security status: It’s association with inflammatory marker and lipid profile among young adult

Nur Atiqah, A., Norazmir, M.N., Khairil Anuar, M.I., Mohd Fahmi, M., Norazlanshah, H.

International Food Research Journal, 2015;22(5):1855-1863.
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Food insecurity, the inability to have sufficient, safe and nutritious food for an active and healthy life, was found to be closely associated with adverse health outcomes. However, limited studies can be found that clearly explains lipid profile and inflammatory events among food secure and insecure individuals, especially among young adults in university, thus creating the need for further research. This study investigated both groups including their gender distribution to determine lipid profile such as total cholesterol (TC), triglyceride (TG), high density lipoprotein cholesterol (HDL-C) and low density lipoprotein cholesterol (LDL-C) and inflammatory marker, high sensitivity C reactive protein (hs-CRP), with waist circumference (WC), fat mass index (FMI) and waist-to-height-ratio (WHTR). A comparative cross-sectional study was carried out among participants aged between 18 to 25 years old (N=124) who were selected through the Adults Food Security Survey Module (AFSSM) and participated in blood draw procedures. Well-established blood markers of lipid profile and inflammatory marker were measured. Percentage of food secure individuals (56.5%) was slightly higher than food insecure (43.5%). Although mean (M) of Hs-CRP for male and female (M=1.000, M=0.645) was higher in food secure group, all other variables showed higher measurements among the food insecure groups. Lipid profiles, TC (M=5.175, M=5.062) and LDL (M=3.100, M=2.914) were high for both male and female respectively, while TG is high for male (M=0.817) (p=0.037) and HDL for female (M=1.826). For body composition such as FMI (M=4.494, M=5.452), WC (M=77.46, M=76.82) and WHtR (M=0.471, M=0.497), male and female respectively, in food insecure group showed higher results but only FMI showed a significant difference (p = 0.016). Statistics showed an association between food security status and lipid profile (TG) and with FMI. However, no significant association was found with inflammatory marker. This study will continue further in depth in gene expression of peroxisome proliferator activated receptor gamma (PPAR-y) and endothelial dysfunction to better understand this issue. Regardless, current data provides knowledge and understanding of food insecurity experienced by young adults in university campus and may help them in making healthier food choices and be appreciative of the risk of chronic illnesses.
Fulltext Treatment outcomes of extended versus nonextended intensive phase in pulmonary tuberculosis smear positive patients with delayed sputum smear conversion: A retrospective cohort study at primary care clinics in Kota Kinabalu

Atiqah A, Tong SF, Nadirah S

Malays Fam Physician, 2023;18:2.
PMID: 36969335 DOI: 10.51866/oa.191

INTRODUCTION: Delayed sputum smear conversion in patients with smear-positive pulmonary tuberculosis is a crucial problem at primary care clinics in Sabah resulting in poor treatment outcomes. This study aimed to compare the treatment outcomes between extended and nonextended intensive phase treatments among patients with delayed sputum smear conversion and to identify the factors associated with unsuccessful treatment outcomes.
METHOD: This retrospective cohort study was conducted using data from a Malaysian tuberculosis registry, medical records and clinic referral emails from five primary care clinics in Kota Kinabalu from January 2014 to December 2018. A total of 163 patients with delayed sputum smear conversion were selected and divided into cohort groups: 90 patients received 3 months of intensive phase treatment (extended intensive phase), and 73 patients received 2 months of intensive phase treatment (non-extended intensive phase).
RESULTS: Of the 163 patients, 33.7% had unsuccessful treatment outcomes (25.2% had treatment failure; 0.6% died; 3.7% defaulted; and 4.3% transferred out), and 3.7% had relapse. There were no significant differences in the prevalence of unsuccessful treatment outcomes (37.6% vs 28.6%, OR=1.51, CI=0.77-2.94, P=0.226) and relapse (2.2% vs 5.7%, 0R=0.36, CI=0.65-2.04, P=0.404) between the extended and non-extended intensive phase groups. High sputum acid-fast bacilli grade (AFB) at 2 months, drug resistance and lack of directly observed treatment, short-course supervision (DOTS) were associated with unsuccessful treatment outcomes.
CONCLUSION: Extended intensive phase treatment in patients with delayed sputum smear conversion does not prevent unsuccessful treatment outcomes and relapse.
Fulltext Mechanical Properties of Longitudinal Basalt/Woven-Glass-Fiber-reinforced Unsaturated Polyester-Resin Hybrid Composites

Sapuan SM, Aulia HS, Ilyas RA, Atiqah A, Dele-Afolabi TT, Nurazzi MN, et al.

Polymers (Basel), 2020 Sep 27;12(10).
PMID: 32992450 DOI: 10.3390/polym12102211

This work represents a study to investigate the mechanical properties of longitudinal basalt/woven-glass-fiber-reinforced unsaturated polyester-resin hybrid composites. The hybridization of basalt and glass fiber enhanced the mechanical properties of hybrid composites. The unsaturated polyester resin (UP), basalt (B) and glass fibers (GF) were fabricated using the hand lay-up method in six formulations (UP, GF, B7.5/G22.5, B15/G15, B22.5/G7.5 and B) to produce the composites, respectively. This study showed that the addition of basalt to glass-fiber-reinforced unsaturated polyester resin increased its density, tensile and flexural properties. The tensile strength of the B22.5/G7.5 hybrid composites increased by 213.92 MPa compared to neat UP, which was 8.14 MPa. Scanning electron microscopy analysis was used to observe the fracture mode and fiber pullout of the hybrid composites.
Advanced functional materials based on nanocellulose/Mxene: A review

Al-Fakih GOA, Ilyas RA, Atiqah A, Atikah MSN, Saidur R, Dufresne A, et al.

Int J Biol Macromol, 2024 Sep 03.
PMID: 39256123 DOI: 10.1016/j.ijbiomac.2024.135207

The escalating need for a sustainable future has driven the advancement of renewable functional materials. Nanocellulose, derived from the abundant natural biopolymer cellulose, demonstrates noteworthy characteristics, including high surface area, crystallinity, mechanical strength, and modifiable chemistry. When combined with two-dimensional (2D) graphitic materials, nanocellulose can generate sophisticated hybrid materials with diverse applications as building blocks, carriers, scaffolds, and reinforcing constituents. This review highlights the progress of research on advanced functional materials based on the integration of nanocellulose, a versatile biopolymer with tailorable properties, and MXenes, a new class of 2D transition metal carbides/nitrides known for their excellent conductivity, mechanical strength, and large surface area. By addressing the challenges and envisioning future prospects, this review underscores the burgeoning opportunities inherent in MXene/nanocellulose composites, heralding a sustainable frontier in the field of materials science.