Displaying publications 1 - 20 of 23 in total

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  1. Md Hadis ND, Draman S, Samsudin S, Yusuf MZ, Md Rosli AN, Abd Rahman NS
    IIUM Medical Journal Malaysia, 2019;18(102):31-0.
    MyJurnal
    Transgender is an umbrella term for persons whose gender identity, gender expression or behaviour does not conform to that typically associated with the sex to which they were assigned at birth. Transgender individuals are particularly vulnerable to mental health concerns and psychological distress. Objective: This study aims to assess the prevalence of depression and associated risk factors among transgender male to female in Kuantan, Pahang. Material and method: This was a cross-sectional study conducted among 96 transgender male to female in Kuantan, Pahang. A convenient type of sampling was used as a mean of data collection. A selfadministered validated Malay version of Beck Depression Inventory(BDI) was used to screen for depression. Result: Majority of the respondent were Malay (82.3%), Muslim (99%), unmarried (93.8%) and monthly income <RM2300 (91.7%). Prevalence of depression among transgender male to female in Kuantan is 37.5%. There is no significant association between sociodemographic data of participants and depression. Conclusion: This study shows that almost one third of transgender male to female are at risk of depression. Therefore, screening for mental health assessment is recommended so that important measures can be taken to prevent depression among this high-risk group.
  2. Hussein MZ, Rahman NS, Sarijo SH, Zainal Z
    Int J Mol Sci, 2012;13(6):7328-42.
    PMID: 22837696 DOI: 10.3390/ijms13067328
    Herbicides, namely 4-(2,4-dichlorophenoxy) butyrate (DPBA) and 2-(3-chlorophenoxy) propionate (CPPA), were intercalated simultaneously into the interlayers of zinc layered hydroxide (ZLH) by direct reaction of zinc oxide with both anions under aqueous environment to form a new nanohybrid containing both herbicides labeled as ZCDX. Successful intercalation of both anions simultaneously into the interlayer gallery space of ZLH was studied by PXRD, with basal spacing of 28.7 Å and supported by FTIR, TGA/DTG and UV-visible studies. Simultaneous release of both CPPA and DPBA anions into the release media was found to be governed by a pseudo second-order equation. The loading and percentage release of the DPBA is higher than the CPPA anion, which indicates that the DPBA anion was preferentially intercalated into and released from the ZLH interlayer galleries. This work shows that layered single metal hydroxide, particularly ZLH, is a suitable host for the controlled release formulation of two herbicides simultaneously.
  3. Shirazi OU, Ab Rahman NS, Zin CS
    J Pharm Bioallied Sci, 2020 10 08;12(4):369-380.
    PMID: 33679082 DOI: 10.4103/jpbs.JPBS_311_19
    The overuse of antibiotics has led to various healthcare problems such as the emergence of resistance in infectious microbes and mortality due to antibiotic resistant healthcare associated infections (HAIs). An antimicrobial stewardship (AMS) program is the set of interventions used worldwide to enhance the rational use of antibiotics especially for the hospitalized patients. This review aimed to describe the characteristics of the implemented AMS programs in various hospitals of the world mainly focusing on the interventions and patients outcomes. The literature about AMS program was searched through various databases such as PubMed, Google Scholar, Science Direct, Cochran Library, Ovid (Medline), Web of Science and Scopus. In this review the literature pertaining to the AMS programs for hospitalized patients is sorted on the basis of various interventions that are categorized as formulary restriction (pre-authorization), guideline development, clinical pathway development, educative interventions and prospective audit. Moreover a clear emphasis is laid on the patient outcomes obtained as a result of these interventions namely the infection control, drop in readmission rate, mortality control, resistance control and the control of an overall cost of antibiotic treatment obtained mainly by curbing the overuse of antibiotics within the hospital wards. AMS program is an efficient strategy of pharmacovigilance to rationalize the antimicrobial practice for hospitalized patients as it prevents the misuse of antibiotics, which ultimately retards the health threatening effects of various antibiotics.
  4. Ismail FF, Mohamed Noor Z, Muda SM, Ab Rahman NS
    J Pharm Bioallied Sci, 2020 Nov;12(Suppl 2):S681-S690.
    PMID: 33828361 DOI: 10.4103/jpbs.JPBS_383_19
    Context: The attitude of healthcare professionals and social supports give big influence toward self-esteem of physically disabled people.

    Aims: To explore how impairments could affect the self-esteem of physically disabled people and how healthcare professionals and social support boost their self-esteem.

    Materials and Methods: This study was conducted qualitatively whereby face-to-face interviews were conducted among 10 participants with physical disabilities. Participants were recruited from two rehabilitation centres in Kuantan, namely Community-based rehabilitation and rehabilitation, occupational therapy, and physiotherapy of public hospital in Kuantan. Interviews were conducted using the developed interview guide that explored on the disabled peoples' self-esteem and motivation, feelings toward attitude of the healthcare professionals, and satisfaction toward the physical, services, and social support from the healthcare professionals. Thematic analysis was done to identify the themes emerged from the interview transcripts.

    Results: Five males and five females with age ranging from 31 to 58 years were interviewed. Five are still working or studying post impairments. Participants claimed being low self-esteem resulted from negative perception from the society, issue of rejection, being discriminated, and difficulty in getting support from the society. Most of the participants asserted that they gained their motivation and self-esteem due to the continuous support from various groups, such as their spouses, family members, colleagues, employers, and healthcare professionals.

    Conclusions: Despite heavy workload and stressful working environment, positive attitude showed by the healthcare professionals is highly praised. Hence, this will indirectly improve the self-esteem, motivation, and rehabilitation progress of physically disabled people.

  5. Moidu NA, A Rahman NS, Syafruddin SE, Low TY, Mohtar MA
    Heliyon, 2020 Sep;6(9):e05000.
    PMID: 33005802 DOI: 10.1016/j.heliyon.2020.e05000
    Anterior gradient-2 (AGR2) protein mediates the formation, breakage and isomerization of disulphide bonds during protein maturation in the endoplasmic reticulum (ER) and contributes to the homoeostasis of the secretory pathway. AGR2 promotes tumour development and metastasis and its elevated expression is almost completely restricted to malignant tumours. Interestingly, this supposedly ER-resident protein can be localised to other compartments of cancer cells and can also be secreted into the extracellular milieu. There are emerging evidences that describe the gain-of-function activities of the extracellular AGR2, particularly in cancer development. Here, we reviewed studies detailing the expression, pathological and physiological roles associated with AGR2 and compared the duality of localization, intracellular and extracellular, with special emphasis on the later. We also discussed the possible mechanisms of AGR2 secretion as well as deliberating the functional impacts of AGR2 in cancer settings. Last, we deliberate the current therapeutic strategies and posit the potential use AGR2, as a prognosis and diagnosis marker in cancer.
  6. Draman S, Ab Rahman NS, Nik Mohamed MH, Ab Rahman J, Kartiwi M
    J Pharm Bioallied Sci, 2020 Nov;12(Suppl 2):S718-S727.
    PMID: 33828367 DOI: 10.4103/jpbs.JPBS_384_19
    Context: Electronic cigarettes have been used as a harm reduction method toward tobacco cessation. Malaysian government has enforced a strict policy to regulate the sale of electronic cigarette products because its liquid contains nicotine.

    Aims: This study aimed to explore the general public's perception toward electronic cigarette use. Public support toward electronic cigarette regulation was also examined.

    Settings and Design: This was a Malaysian population-based survey.

    Materials and Methods: Data were obtained from the National E-Cigarette Survey (NECS) 2016, which used a multistage stratified cluster sampling household survey representing all Malaysian adults aged 18 years old. A cross-sectional survey was conducted among a total of 4288 adults.

    Statistical Analysis Used: Descriptive and logistic regression analysis.

    Results: Majority were aged 25-44 years old (44%), completed at least secondary education (69%), of Malay ethnicity (73%), and married (68%). Majority (88.1%) have never used electronic cigarette. A quarter (25.5%) perceived electronic cigarette helps people quit cigarette smoking, whereas 20.3% perceived electronic cigarette helps people to maintain cigarette abstinence. Approximately 85% believed that electronic cigarette use does not help in improving breathing and coughing. Majority (91.8%) disagreed that electronic cigarettes should be allowed in places where tobacco smoking is banned. Thus, 63.4% agreed that electronic cigarette should be banned completely rather than regulated.

    Conclusion: Majority of general public had negative perception about electronic cigarette use.

  7. Aslam A, Zin CS, Ab Rahman NS, Gajdács M, Ahmed SI, Jamshed S
    Drug Healthc Patient Saf, 2021;13:171-181.
    PMID: 34737648 DOI: 10.2147/DHPS.S331427
    Background: Self-medication with antibiotics (SMA) is an important public health issue, which can result in the facilitated development of antibiotic resistance, and may increase the risk of inappropriate utilization of antibiotics. So, the objective of the present study was to estimate the prevalence rate of SMA and to also explore SMA practices among the lay population of Kuala Lumpur (Malaysia).

    Methods: The current study was cross-sectional population-based and used a convenient sampling technique. Moreover, Lorenz's formula was used to calculate the sample size and the required sample size was 480. Data were collected through face-to-face interviews with a pre-validated questionnaire and the study was conducted in Kuala Lumpur (Malaysia). Descriptive statistics, cross-tabulation, and logistic regression were executed by using SPSS version 24.

    Results: Out of 480 participants, 45.8% were polled male and the prevalence of SMA in this study was found to be 15.1%. The majority of participants 23.1% indicated that they practiced antibiotics at least once in the last six months. The commonly self-medicated antibiotics were amoxicillin-clavulanate 20.6%, ampicillin/cloxacillin 14.2%, and levofloxacin 8.3%. Moreover, 64.8% of participants indicated that they bought their antibiotics from pharmacies. Whereas, most of the participants practice antibiotics to save money 19.2% and time 23.1%. Findings from multivariate logistic regressions showed that predictors of SMA were male gender, (95% CI: 0.300-0.877) occupation (95% CI: 0.122-10.797), health insurance (95% CI: 0.025-0.472), and education (95% CI: 0.084-0.800).

    Conclusion: The results of this study indicate that SMA persists among the community and education level has a significant impact on this behavior. Thus, concerning health management authorities should step in with developing legislation to stop this practice, and by implementing such interventions and policies to educate and to raise awareness about the risk of SMA for the future.

  8. Zin CS, Ab Rahman NS, Mohamed Nazar NI, Kurdi A, Godman B
    J Multidiscip Healthc, 2023;16:1683-1697.
    PMID: 37350986 DOI: 10.2147/JMDH.S403589
    OBJECTIVE: To examine trends in the cost of medicines, consultation fees and clinic visits among the employees covered by the employer health insurance in Malaysia's private primary healthcare system in Malaysia.

    DESIGNS: Retrospective cross-sectional study.

    SETTING: PMCare claims database from January 2016 to August 2019.

    PARTICIPANTS: A total of 83,556 outpatient clinic visits involving 10,150 IIUM employees of the International Islamic University Malaysia (IIUM) to private general practitioners (GPs). During the study period, IIUM adopts the incentive structure of capping coverage at Ringgit Malaysia (RM) 45/outpatient visit (USD 10.58) to cover for consultation fees and medicine costs.

    MAIN OUTCOME MEASURES: The monthly percentage change in the number of clinic visits, medicine costs, consultation fees and total costs between January 2016 and August 2019. A simple linear regression using Stata v15.1 was also performed to measure the association between the characteristics of the prescribed medicines and medicine charges.

    RESULTS: The number of clinic visits per patient increased by 17% from January 2016 to August 2019, with consultation fees increasing by 113.9% and total costs by 7.9% per clinic visit per patient. Conversely, the cost of medicines and the number of medicines prescribed per clinic visit per patient decreased by 39.7% and 6.3%, respectively.

    CONCLUSION: Within the incentive structure of capping the total amount of coverage per clinic visit, medicine costs were reduced by decreasing the number of medicines prescribed, to offset the increased consultation fees. This may create perverse incentives that affect medicine use with negative consequences for the health system and health insurers.

  9. Awaisu A, Abd Rahman NS, Nik Mohamed MH, Bux Rahman Bux SH, Mohamed Nazar NI
    Am J Pharm Educ, 2010 Mar 10;74(2):34.
    PMID: 20414449
    OBJECTIVE: To implement and determine the effectiveness of an objective structured clinical examination (OSCE) to assess fourth-year pharmacy students' skills in a clinical pharmacy course.

    DESIGN: A 13-station OSCE was designed and implemented in the 2007-2008 academic year as part of the assessment methods for a clinical pharmacy course. The broad competencies tested in the OSCE included: patient counseling and communication, clinical pharmacokinetics (CPK), identification and resolution of drug-related problems (DRPs), and literature evaluation/drug information provision.

    ASSESSMENT: Immediately after all students completed the OSCE, a questionnaire containing items on the clarity of written instructions, difficulty of the tasks, perceived degree of learning gained and needed, and the suitability of the references or literature resources provided was administered. More than 70% of the students felt that a higher degree of learning was needed to accomplish the tasks at the 2 DRP stations and 2 CPK stations and the majority felt the written instructions provided at the phenytoin CPK station were difficult to understand. Although about 60% of the students rated OSCE as a difficult form of assessment, 75% said it should be used more and 81% perceived they learned a lot from it.

    CONCLUSION: Although most students felt that the OSCE accurately assessed their skills, a majority felt the tasks required in some stations required a higher degree of learning than they had achieved. This may indicate deficiencies in the students' learning abilities, the course curriculum, or the OSCE station design. Future efforts should include providing clearer instructions at OSCE stations and balancing the complexity of the competencies assessed.

  10. Khalid MI, Tang JY, Baharuddin NH, Rahman NS, Rahimi NF, Radu S
    J Food Prot, 2015 Jan;78(1):65-71.
    PMID: 25581179 DOI: 10.4315/0362-028X.JFP-14-109
    The present study was conducted to investigate the prevalence and antibiotic resistance among Campylobacter jejuni in ulam at farms and retail outlets located in Kuala Terengganu, Malaysia. A total of 526 samples (ulam, soil, and fertilizer) were investigated for the presence of C. jejuni and the gene for cytolethal distending toxin (cdt) by using a multiplex PCR method. Antibiotic susceptibility to 10 types of antibiotics was determined using the disk diffusion method for 33 C. jejuni isolates. The average prevalence of contaminated samples from farms, wet markets, and supermarkets was 35.29, 52.66, and 69.88%, respectively. The cdt gene was not detected in 24 of the 33 C. jejuni isolates, but 9 isolates harbored cdtC. Antibiotic resistance in C. jejuni isolates was highest to penicillin G (96.97% of isolates) followed by vancomycin (87.88%), ampicillin (75.76%), erythromycin (60.61%), tetracycline (9.09%), amikacin (6.06%), and norfloxacin (3.03%); none of the isolates were resistant to ciprofloxacin, enrofloxacin, and gentamicin. In this study, C. jejuni was present in ulam, and some isolates were highly resistant to some antibiotics but not to quinolones. Thus, appropriate attention and measures are required to prevent C. jejuni contamination on farms and at retail outlets.
  11. Elnaem MH, Akkawi ME, Nazar NIM, Ab Rahman NS, Mohamed MHN
    PMID: 33910270 DOI: 10.3352/jeehp.2021.18.6
    PURPOSE: This study investigated pharmacy students' perceptions of various aspects of virtual objective structured clinical examinations (vOSCEs) conducted during the coronavirus disease 2019 pandemic in Malaysia.

    METHODS: This cross-sectional study involved third- and fourth-year pharmacy students at the International Islamic University Malaysia. A validated self-administered questionnaire was distributed to students who had taken a vOSCE a week before.

    RESULTS: Out of the 253 students who were approached, 231 (91.3%) completed the questionnaire. More than 75% of the participants agreed that the instructions and preparations were clear and helpful in familiarizing them with the vOSCE flow. It was found that 53.2% of the respondents were satisfied with the flow and conduct of the vOSCE. However, only approximately one-third of the respondents believed that the tasks provided in the vOSCE were more convenient, less stressful, and easier to perform than those in the conventional OSCE. Furthermore, 49.7% of the students favored not having a vOSCE in the future when conducting a conventional OSCE becomes feasible again. Internet connection was reported as a problem hindering the performance of the vOSCE by 51.9% of the participants. Students who were interested in clinical pharmacy courses were more satisfied than other students with the preparation and operation of the vOSCE, the faculty support, and the allocated time.

    CONCLUSION: Students were satisfied with the organization and operation of the vOSCE. However, they still preferred the conventional OSCE over the vOSCE. These findings might indicate a further need to expose students to telehealthcare models.

  12. Zin CS, Nazar NI, Rahman NS, Alias NE, Ahmad WR, Rani NS, et al.
    J Pain Res, 2018;11:1959-1966.
    PMID: 30288090 DOI: 10.2147/JPR.S164774
    Purpose: To examine the trends of analgesic prescribing at public tertiary hospital outpatient settings and explore the patterns of their utilization in nonsteroidal anti-inflammatory drugs (NSAIDs), tramadol, and opioid patients.
    Patients and methods: This cross-sectional study was conducted from 2010 to 2016 using the prescription databases of two tertiary hospitals in Malaysia. Prescriptions for nine NSAIDs (ketoprofen, diclofenac, celecoxib, etoricoxib, ibuprofen, indomethacin, meloxicam, mefenamic acid, and naproxen), tramadol, and five other opioids (morphine, fentanyl, oxycodone, dihydrocodeine, and buprenorphine) were included in this study. Annual number of patients and prescriptions were measured in repeat cross-sectional estimates. Descriptive statistics and linear trend analysis were performed using Stata version 13.
    Results: A total of 192,747 analgesic prescriptions of the nine NSAIDs, tramadol, and five other opioids were given for 97,227 patients (51.8% NSAIDs patients, 46.6% tramadol patients, and 1.7% opioid patients) from 2010 to 2016. Tramadol (37.9%, n=72,999) was the most frequently prescribed analgesic, followed by ketoprofen (17.5%, n=33,793), diclofenac (16.2%, n=31,180), celecoxib (12.2%, n=23,487), and other NSAIDs (<4.5%). All the analgesics were increased over time except meloxicam, indomethacin, and mefenamic acid. Opioids, primarily morphine (2.2%, n=4,021) and oxycodone (0.5%, n=1,049), were prescribed the least, but the rate of increase was the highest.
    Conclusion: Tramadol was the most frequently prescribed analgesic in hospital outpatient settings in Malaysia. Opioids were prescribed the least, but noted the highest increase in utilization.
    Data source: Prescription databases of two public tertiary hospitals in Malaysia

    Study site: two public tertiary hospitals in Malaysia
  13. Elnaem MH, Mohd Taufek NH, Ab Rahman NS, Mohd Nazar NI, Zin CS, Nuffer W, et al.
    Vaccines (Basel), 2021 Oct 09;9(10).
    PMID: 34696264 DOI: 10.3390/vaccines9101156
    This study aimed to investigate the attitudes, perceptions, and experiences of side effects with the COVID-19 vaccines in Malaysia among participants in the National Vaccination Program. A cross-sectional survey was conducted among a sample of vaccine-eligible and vaccinated individuals in Malaysia between May and July 2021. A total of 428 respondents completed the survey. A vast majority (98.6%) of the respondents had registered to be vaccinated. Twenty participants (4.7%) expressed concerns about either registering or receiving the COVID-19 vaccination, mainly due to their uncertainty of vaccine safety. Approximately 77.5% received their vaccinations. Of them, 76.8% had experienced vaccine-related side effects. About 40% of the side effects occurred more with the second dose, particularly those who received the Pfizer-BioNTech vaccine (p < 0.001). Pain at the injection site (61.1%) and tiredness (48.8%) were the most reported side effects. Compared to those aged ≥60 years, all age groups were more likely to exhibit vaccine-related side effects; meanwhile, males (OR: 0.51, 95% CI: 0.27-0.93) were less likely to experience side effects than females. Those who received the Sinovac vaccine were at lower risk of experiencing side effects (OR: 0.08, 95% CI: 0.03-0.22) and were more likely to report fewer side effects than Pfizer-BioNTech (p = 0.012) and Oxford-AstraZeneca groups (p= 0.001). The overall attitudes toward the COVID-19 vaccination program were positive. Several differences in the experiences of vaccine-related side effects, in terms of prevalence and numbers, were attributed to age, gender, and received vaccine type.
  14. Low TY, Syafruddin SE, Mohtar MA, Vellaichamy A, A Rahman NS, Pung YF, et al.
    Cell Mol Life Sci, 2021 Jul;78(13):5325-5339.
    PMID: 34046695 DOI: 10.1007/s00018-021-03856-0
    Protein-protein interactions are fundamental to various aspects of cell biology with many protein complexes participating in numerous fundamental biological processes such as transcription, translation and cell cycle. MS-based proteomics techniques are routinely applied for characterising the interactome, such as affinity purification coupled to mass spectrometry that has been used to selectively enrich and identify interacting partners of a bait protein. In recent years, many orthogonal MS-based techniques and approaches have surfaced including proximity-dependent labelling of neighbouring proteins, chemical cross-linking of two interacting proteins, as well as inferring PPIs from the co-behaviour of proteins such as the co-fractionating profiles and the thermal solubility profiles of proteins. This review discusses the underlying principles, advantages, limitations and experimental considerations of these emerging techniques. In addition, a brief account on how MS-based techniques are used to investigate the structural and functional properties of protein complexes, including their topology, stoichiometry, copy number and dynamics, are discussed.
  15. Rozali MA, Abd Rahman NS, Sulaiman H, Abd Rahman AN, Atiya N, Wan Mat WR, et al.
    J Pharm Bioallied Sci, 2020 Nov;12(Suppl 2):S804-S809.
    PMID: 33828380 DOI: 10.4103/jpbs.JPBS_266_19
    Introduction: Approach to managing infection in the intensive care unit (ICU) often varies between institutions and not many readily adapt to available local guidelines despite it was constructed to suite local clinical scenario. Malaysia already has two published guidelines on managing infection in the ICU but data on its compliance are largely unknown.

    Objectives: A cross-sectional survey was carried out and sent to a total of 868 specialists working primarily in the ICU. The aim of this study was to explore knowledge, perception, and the antibiotic prescribing practice among specialists and advanced trainees in Malaysian ICU.

    Materials and Methods: A cross-sectional survey was used, consisted of three sections: knowledge, perception, and antibiotic prescribing practice in ICU. Three case vignettes on hospital-acquired pneumonia (HAP), infected necrotizing pancreatitis (INP), and catheter-related bloodstream infection (CRBSI) were used to explore antibiotic prescribing practice.

    Results: A total of 868 eligible subjects were approached with 104 responded to the survey. Three hundred eighty-nine antibiotics were chosen from seven different classes in the case vignettes. All respondents acknowledged the importance of pharmacokinetic/pharmacodynamic (PK/PD) in antibiotic optimization and majority (97.2%) perceived that current dosing is inadequate to achieve optimal PK/PD target in ICU patients. Majority (85.6%) believed that antibiotic dose should be streamlined to the organisms' minimum inhibitory concentration (MIC). In terms of knowledge, only 64.4% provided the correct correlations between antibiotics and their respective PK/PD targets. Compliance rates in terms of antibiotic choices were at 79.8%, 77.8%, and 27.9% for HAI, INP, and CRBSI, respectively.

    Conclusion: Malaysian physicians are receptive to use PK/PD approach to optimize antibiotic dosing in ICU patients. Nonetheless, there are still gaps in the knowledge of antibiotic PK/PD as well as its application in the critically ill, especially for β-lactams.

  16. Abdullah F, Khan Nor-Ashikin MN, Agarwal R, Kamsani YS, Abd Malek M, Bakar NS, et al.
    Asian J Androl, 2021 1 22;23(3):281-287.
    PMID: 33473013 DOI: 10.4103/aja.aja_81_20
    Diabetes mellitus (DM) is known to cause reproductive impairment. In men, it has been linked to altered sperm quality and testicular damage. Oxidative stress (OS) plays a pivotal role in the development of DM complications. Glutathione (GSH) is a part of a nonenzymatic antioxidant defense system that protects lipid, protein, and nucleic acids from oxidative damage. However, the protective effects of exogenous GSH on the male reproductive system have not been comprehensively examined. This study determined the impact of GSH supplementation in ameliorating the adverse effect of type 1 DM on sperm quality and the seminiferous tubules of diabetic C57BL/6NTac mice. GSH at the doses of 15 mg kg-1 and 30 mg kg-1 was given intraperitoneally to mice weekly for 6 consecutive weeks. The mice were then weighed, euthanized, and had their reproductive organs excised. The diabetic (D Group) showed significant impairment of sperm quality and testicular histology compared with the nondiabetic (ND Group). Diameters of the seminiferous lumen in diabetic mice treated with 15 mg kg-1 GSH (DGSH15) were decreased compared with the D Group. Sperm motility was also significantly increased in the DGSH15 Group. Improvement in testicular morphology might be an early indication of the protective roles played by the exogenous GSH in protecting sperm quality from effects of untreated type 1 DM or diabetic complications. Further investigation using different doses and different routes of GSH is necessary to confirm this suggestion.
  17. Ab Rahman J, Mohd Yusoff MF, Nik Mohamed MH, Mahadir Naidu B, Lim KH, Tee GH, et al.
    Asia Pac J Public Health, 2019 10;31(7_suppl):9S-21S.
    PMID: 30880403 DOI: 10.1177/1010539519834735
    Electronic cigarettes (e-cigarettes) are a new method for the consumption of nicotine. A nationwide survey among 4288 Malaysian adults was conducted in 2016 to measure the prevalence and to describe the population characteristics of e-cigarette users. A complex sampling design was used, and data were collected using a face-to-face questionnaire. The overall prevalence of current, ever, former, and dual users of e-cigarettes in Malaysia were 3.2% (95% confidence interval [CI] = 2.5-4.1), 11.9% (95% CI = 10.5-13.5), 8.6% (95% CI = 7.5-9.8), and 2.3% (95% CI = 1.8-3.1), respectively. The prevalence of all type of e-cigarette use was higher in urban than in rural areas. Current e-cigarette users were likely to be younger, males, and with higher education level. Among current e-cigarette users, 74% (95% CI = 64-82) also smoked conventional cigarettes (dual user). E-cigarette use is prevalent in Malaysia. It is common among younger adults, males, and cigarette smokers.
  18. Ab Rahman NS, Abd Majid FA, Abd Wahid ME, Zainudin AN, Zainol SN, Ismail HF, et al.
    Drug Metab Lett, 2018;12(1):62-67.
    PMID: 29542427 DOI: 10.2174/1872312812666180314112457
    BACKGROUND: SynacinnTM contains five standardized herbal extracts of Orthosiphon Stamineus (OS), Syzygium polyanthum (SZ), Curcuma xantorrizza (CX), Cinnamomum zeylanicum (CZ) and Andrographis paniculata (AP) and is standardized against phytochemical markers of rosmarinic acid, gallic acid, curcumin, catechin and andrographolide respectively. This herbal medicine has been used as health supplement for diabetes. SynacinnTM is recommended to be consumed as supplement to the diabetic drugs. However, herb-drug interaction of SynacinnTM polyherbal with present drugs is unknown.

    METHODS: This study was designed to investigate the effect of SynacinnTM and its individual biomarkers on drug metabolizing enzymes (CYP1A2, CYP2B6, CYP2C8, CYP2C9, CYP2C19, CYP2D6, CYP3A4 (Midazolam), CYP3A4 (Testosteron)), to assess its herb-drug interaction potential through cytochrome P450 inhibition assay. This study was conducted using liquid chromatography- tandem mass spectroscopy (LC-MS/MS) using probe substrates using human liver microsomes against CYP1A2, CYP2B6, CYP2C8, CYP2C9, CYP2C19, CYP2D6, CYP3A4 (Midazolam) and CYP3A4 (Testosteron).

    RESULTS: Result showed that SynacinnTM at maximum concentration (5000 µg/ml) 100% inhibit CYP1A2, CYP2B6, CYP2C8, CYP2C9, CYP2C19, CYP2D6, CYP3A4 (Midazolam) and CYP3A4 (Testosteron). IC50 values determined were 0.23, 0.60, 0.47, 0.78, 1.23, 0.99, 1.01, and 0.91 mg/ml for CYP 1A2, 2B6, 2C8, 2C9, 2C19, 2D6, 3A4 (midazolam) and 3A4 (testosterone), respectively. Meanwhile, all individual biomarkers showed no, less or moderate inhibitory effect towards all the tested CYP450 except for curcumin that showed inhibition of CYP2C8 (91%), CYP2C9 (81%) and CYP2C19 (72%) at 10µM.

    CONCLUSION: Curcumin was found to be an active constituent that might contribute to the inhibition of SynacinnTM against CYP2C8, CYP2C9 and CYP2C19. It can be suggested that SynacinnTM can be consumed separately from a drug known to be metabolized by all tested CYP450 enzymes.

  19. Abdul Rahman NS, Mohamed Noor Khan NA, Eshak Z, Sarbandi MS, Mohammad Kamal AA, Abd Malek M, et al.
    Antioxidants (Basel), 2022 Oct 25;11(11).
    PMID: 36358471 DOI: 10.3390/antiox11112100
    Vitrification is an important tool to store surplus embryos in assisted reproductive technology (ART). However, vitrification increases oxidative damage and results in decreased viability. Studies have reported that L-glutathione (GSH) supplementation improves the preimplantation development of murine embryos. Glutathione constitutes the major non-protein sulphydryl compound in mammalian cells, which confers protection against oxidative damage. However, the effect of GSH supplementation on embryonic vitrification outcomes has yet to be reported. This study aims to determine whether GSH supplementation in culture media improves in vitro culture and vitrification outcomes, as observed through embryo morphology and preimplantation development. Female BALB/c mice aged 6−8 weeks were superovulated through an intraperitoneal injection of 10 IU of pregnant mare serum gonadotrophin (PMSG), followed by 10 IU of human chorionic gonadotrophin (hCG) 48 h later. The mated mice were euthanized by cervical dislocation 48 h after hCG to harvest embryos. Two-cell embryos were randomly assigned to be cultured in either Group 1 (GSH-free medium), Group 2 (GSH-free medium with vitrification), Group 3 (0.01 mM GSH-supplemented medium), or Group 4 (0.01 mM GSH-supplemented medium with vitrification). Non-vitrified (Groups 1 and 3) and vitrified (Groups 2 and 4) embryos were observed for morphological quality and preimplantation development at 24, 48, 72, and 96 h. In the non-vitrified groups, there were significant increases in the number of Grade-1 blastocysts in GSH cultures (p < 0.05). Similarly, in the vitrified groups, GSH supplementation was also seen to significantly increase blastocyst formation. Exogenous GSH supplementation resulted in a significant increase in intracellular GSH, a release of cytochrome c from mitochondria, and a parallel decrease in intracellular reactive oxygen species (ROS) levels in vitrified eight-cell embryos (p < 0.05). GSH supplementation was shown to upregulate Bcl2 expression and downregulate Bax expression in the vitrified preimplantation embryo group. The action of exogenous GSH was concomitant with an increase in the relative abundance of Gpx1 and Sod1. In conclusion, our study demonstrated the novel use and practical applicability of GSH supplementation for improving embryonic cryotolerance via a decrease in ROS levels and the inhibition of apoptotic events by improvement in oxidative status.
  20. Dasiman R, Rahman NS, Othman S, Mustafa MF, Yusoff NJ, Jusoff WH, et al.
    Med Sci Monit Basic Res, 2013 Oct 04;19:258-66.
    PMID: 24092420 DOI: 10.12659/MSMBR.884019
    BACKGROUND: This study aimed to investigate the effects of vitrification and slow freezing on actin, tubulin, and nuclei of in vivo preimplantation murine embryos at various developmental stages using a Confocal Laser Scanning Microscope (CLSM).

    MATERIAL/METHODS: Fifty female mice, aged 4-6 weeks, were used in this study. Animals were superovulated, cohabitated overnight, and sacrificed. Fallopian tubes were excised and flushed. Embryos at the 2-cell stage were collected and cultured to obtain 4- and 8-cell stages before being cryopreserved using vitrification and slow freezing. Fixed embryos were stained with fluorescence-labelled antibodies against actin and tubulin, as well as DAPI for staining the nucleus. Labelled embryos were scanned using CLSM and images were analyzed with Q-Win software V3.

    RESULTS: The fluorescence intensity of both vitrified and slow-frozen embryos was significantly lower for tubulin, actin, and nucleus as compared to non-cryopreserved embryos (p<0.001). Intensities of tubulin, actin, and nucleus in each stage were also decreased in vitrified and slow-frozen groups as compared to non-cryopreserved embryos.

    CONCLUSIONS: Cryopreservation of mouse embryos by slow freezing had a more detrimental effect on the actin, tubulin, and nucleus structure of the embryos compared to vitrification. Vitrification is therefore superior to slow freezing in terms of embryonic cryotolerance.

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