Displaying publications 1 - 20 of 51 in total

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  1. Yusoff F, Sahril N, Rasidi NM, Zaki NA, Muhamad N, Ahmad N
    Asia Pac J Public Health, 2014 Sep;26(5 Suppl):100S-7S.
    PMID: 25038195 DOI: 10.1177/1010539514542425
    Illicit drug use among adolescents has become a public health issue in Malaysia. This study was from the Global School-Based Student Health Survey (GSHS) and aimed to determine the prevalence of and factors associated with illicit drug use among school-going adolescents in Malaysia. A 2-stage stratified cluster sampling method was used and data were collected via a self-administered questionnaire. A total of 25 507 students participated in the study. The prevalence of adolescents who ever used illicit drugs was 1.7%. Adolescents who ever used illicit drugs were associated with current smoking (adjusted odds ratio [aOR] = 6.99; 95% CI = 5.19, 9.40), current alcohol use (aOR = 4.63; 95% CI = 3.43, 6.26), ever having sex (aOR = 4.76; 95% CI = 3.54, 6.41), truancy (aOR = 1.43; 95% CI = 1.07, 1.90), lack of peer support (aOR = 1.47; 95% CI = 1.07, 2.03), and lack of parental monitoring (aOR = 1.71; 95% CI = 1.22, 2.39). Public health intervention should be addressed to prevent illicit drug used among adolescents.
    Study name: Global School-Based Student Health Survey (GSHS)
    Matched MeSH terms: Street Drugs*
  2. Wan Raihana WA, Gan SH, Tan SC
    PMID: 21147046 DOI: 10.1016/j.jchromb.2010.10.037
    Amphetamine-type stimulants (ATS) are a group of chiral amine drugs which are commonly abused for their sympathomimetic and stimulant properties. ATS are extensively metabolised by hepatic cytochrome P450 enzymes. As metabolism of ATS has been shown to be highly stereospecific, stereoselective analytical methods are essential for the quantitative determination of ATS concentrations for both in vivo and in vitro studies of ATS metabolism. This paper describes a new stereoselective method for the simultaneous determination of amphetamine (AM), methamphetamine (MA), 3,4-methylenedioxymethamphetamine (MDMA), 3,4-methylenedioxyamphetamine (MDA), 4-hydroxy-3-methoxymethamphetamine (HMMA), 4-hydroxy-3-methoxyamphetamine (HMA), 3,4-hydroxymethamphetamine (HHMA) and 3,4-hydroxyamphetamine (HHA) in human urine samples validated according to the United States Food and Drug Administration guidelines. In this method, analytes are simultaneously extracted and derivatized with R-(-)-α-methoxy-α-(trifluoromethyl)phenylacetyl chloride (R-MTPCl) as the chiral derivatization reagent. Following this, the analytes were subjected to a second derivatization with N-methyl-N-trimethylsilyltrifluoroacetamide (MSTFA) which targets the hydroxyl groups present in HMMA, HMA, HHMA and HHA. The derivatized analytes were separated and quantified using gas chromatography-mass spectrometry (GC-MS). The method was evaluated according to the established guidelines for specificity, linearity, precision, accuracy, recovery and stability using a five-day protocol. Intra-day precision ranged from 0.89 to 11.23% RSD whereas inter-day precision was between 1.03 and 12.95% RSD. Accuracy values for the analytes ranged from -5.29% to 13.75%. Limits of quantitation were 10 μg/L for AM, MA, MDMA, HMA and HMMA and 2μg/L for MDA, HMA and HHA. Recoveries and stability values were also within accepted values. The method was applied to authentic ATS-positive samples.
    Matched MeSH terms: Street Drugs/isolation & purification; Street Drugs/urine*; Street Drugs/chemistry
  3. Wai BH, Singh S, Varma SL
    Addiction, 1996 Mar;91(3):435-8.
    PMID: 8867206
    One hundred and seventy-one drug-dependent females in a drug rehabilitation centre were studied to estimate the prevalence of HIV infection among them. Twenty-four (14%) were positive on the Western Blot test. The presence of HIV infection was significantly correlated with syphilis (p < 0.03) and age (p < 0.001); 83% of those who were HIV positive were intravenous drug users. The need for harm reduction programmes to prevent spread of HIV infection among injecting drug users is stressed.
    Matched MeSH terms: Street Drugs*
  4. Vohrah KC
    Bull Narc, 1984 Oct-Dec;36(4):31-41.
    PMID: 6570698
    While the Dangerous Drugs Act 1952 of Malaysia has been amended to take into account changing patterns of drug abuse and trafficking, it lacks provisions for the mandatory forfeiture of proceeds derived from drug trafficking. Nor do the general powers of forfeiture in the Criminal Procedure Code of the country extend to such proceeds. To meet further changing patterns of drug trafficking involving criminal syndicate leaders, who rarely incriminate themselves through overt and detectable acts, Malaysia has a bill in Parliament the purpose of which, when it becomes law, is to detain without trial, upon cogent evidence, persons who have been associated with any activity relating to or involving drug trafficking, and to prevent them from further committing drug crimes. In addition, serious thinking has been given to the possibility of adopting, within the constraints of the Malaysian Constitution, a law on forfeiture of the proceeds derived from drug trafficking. There are, in this respect, several problems to be resolved, such as the secrecy of bank accounts and taxpayers' returns, which might make it difficult to trace proceeds and to keep track of tainted money being remitted abroad, although it is believed that such problems could be overcome by domestic measures. A more serious problem is the lack of international co-operation for investigations to be carried out outside national borders to trace, seize, freeze and secure the forfeiture of the proceeds of drug crimes located abroad.
    Matched MeSH terms: Street Drugs*
  5. Vicknasingam B, Narayanan S, Singh D, Corazza O
    Curr Opin Psychiatry, 2020 07;33(4):295-300.
    PMID: 32398543 DOI: 10.1097/YCO.0000000000000612
    PURPOSE OF REVIEW: The aim of this review is to provide an update on recent trends of New Psychoactive Substances (NPS) and the current global strategies implemented to manage them.

    RECENT FINDINGS: The number of NPS has increased from 166 in 2009 to 892 in 2018, with about 36% having stimulant effects. Such trend revels some unprecedented patterns. The decline in the emergence of new synthetic cannabinoids has coincided with rising deaths due to overdose of fentanyl and non-fentanyl compounds in North America and Europe. The detection of new stimulant NPS has stabilized since 2015. Although the level of seizures of mephedrone have risen since then, they are still below the levels reported before international control. The legal status of kratom still remains unclear, whereas calls for research on its benefits continue. The nonmedical use of tramadol in Africa and Middle East is a cause of growing concern.

    SUMMARY: Although the rise of NPS is a cause for concern, evidence suggests that the strategy to face the challenge should include updating international data collection systems, integrating scientific-based interventions for drug use, strengthening national monitoring, and increasing collaborative research and forensic capabilities. The legal, regulatory framework and clinical guidelines should remain dynamic, whereas enforcement agencies should measure success by destroying drug networks as seizures rarely dismantle drug markets.

    Matched MeSH terms: Street Drugs*
  6. Tan RKJ, Wong CM, Chen MI, Chan YY, Bin Ibrahim MA, Lim OZ, et al.
    Int J Drug Policy, 2018 11;61:31-37.
    PMID: 30388567 DOI: 10.1016/j.drugpo.2018.10.002
    BACKGROUND: Sexualised substance use, or 'chemsex' has been shown to be a major factor driving the syndemic of HIV/AIDS in communities of gay, bisexual, and other men who have sex with men (GBMSM) around the world. However, there is a paucity of research on chemsex among GBMSM in Singapore due to punitive drug laws and the criminalisation of sexual behaviour between men. This qualitative descriptive study is the first to explore perceptions towards, motivators to engaging in, and the barriers to addressing the harms associated with chemsex among GBMSM in Singapore.

    METHODS: We conducted 30 semi-structured in-depth interviews with self-identifying GBMSM between the ages of 18-39 in Singapore following a purposive sampling strategy. Interview topics included participants' perceptions of drug use among GBMSM in Singapore, perceptions towards chemsex, reasons for drug use and chemsex, and recommendations to address the harms associated with chemsex in Singapore. Interviews were audio-recorded, transcribed, coded, and analysed using thematic analysis.

    RESULTS: Participants reported that it was common to encounter chemsex among GBMSM in Singapore as it could be easily accessed or initiated using social networking phone apps. Enhancement and prolongation of sexual experiences, fear of rejection from sexual partners and peers, and its use as a means of coping with societal rejection were three main reasons cited for engaging in chemsex. The impact of punitive drug laws on disclosure and stigmatisation of GBMSM who use drugs were reported to be key barriers towards addressing chemsex. Participants suggested using gay-specific commercial venues as avenues for awareness and educational campaigns, and social media to reach out to younger GBMSM.

    CONCLUSIONS: This study highlights the complexities behind chemsex use among GBMSM in Singapore, and the range of individual to institutional factors to be addressed. We recommend that community-based organisations and policy-makers find ways to destigmatise discussion of chemsex and provide safe spaces to seek help for drug use.

    Matched MeSH terms: Street Drugs*
  7. Suppiah B, Vicknasingam B, Singh D, Narayanan S
    J Psychoactive Drugs, 2016 Apr-Jun;48(2):86-92.
    PMID: 27014841 DOI: 10.1080/02791072.2016.1156790
    Despite the rise in recreational use of ketamine in Malaysia, there have been no studies of users or of the health-related consequences they face. This study was initiated to examine ketamine use and its health consequences. A structured questionnaire was used to elicit information. A final sample of 127 males was divided into persons who used only ketamine and those who were poly-drug users. Each group was further divided into long-period and short-period users. Urine toxicology screening for ketamine and other illicit drugs commonly used in Malaysia was also done. Our findings corroborate those of earlier studies that link ketamine use to urological problems such as frequent urination, dysuria, incontinence, painful bladder, nocturia, and urinary urgency. A new finding in this study is the significant association between ketamine use and erectile dysfunction, such that higher odds of reporting erectile dysfunction were linked to long-period users. Our findings strengthen the case for early intervention, as ketamine users are drawn from young and unmarried male participants. The association of ketamine use with erectile dysfunction, if substantiated, will help physicians in their diagnosis of erectile dysfunction, particularly among youths.
    Matched MeSH terms: Street Drugs/adverse effects*
  8. Sulaiman M, Kunalan V, Yap ATW, Lim WJL, Ng JJY, Loh SWX, et al.
    Drug Test Anal, 2018 Jan;10(1):109-119.
    PMID: 28670869 DOI: 10.1002/dta.2238
    Clandestine heroin laboratories have been a feature of the Malaysian illicit drug scene since soon after the abuse of heroin emerged in 1972. The first few clandestine heroin laboratories which synthesised heroin via the acetylation of imported morphine were uncovered in 1973 and 1977. By the mid-1980s, this type of laboratory was replaced by heroin-cutting laboratories whereby imported high-grade heroin was cut to street heroin. This was to meet the rising demand for the drug owing to the rapid escalation of the number of drug users. Over the years, the most significant change in the composition of the street heroin is the decrease in its purity from 30%-50% to 3%-5%. Caffeine has remained the major adulterant and chloroquine is detected in virtually all recent seizures.
    Matched MeSH terms: Street Drugs/adverse effects; Street Drugs/analysis; Street Drugs/chemical synthesis*
  9. Subramaniam K, Mohd Shah M, Fatin Farisha F, Poh SL, Nor Fadhilah M, Hilmi S
    Med J Malaysia, 2018 10;73(5):272-275.
    PMID: 30350803 MyJurnal
    INTRODUCTION: The role of pathologist not only confined in performing post mortem but also can assist in prevention. The aim of this study to determine the prevalence and association of drug of abuse (DoA) in road traffic collision (RTC) at Hospital Kuala Lumpur.

    METHODS: This is a retrospective study of post mortem cases at Hospital Kuala Lumpur from 2014 to 2016. Deaths from RTC were included while decomposed and homicide cases were excluded. We performed Spearman Correlation statistical test to relate RTC and positive DoA results.

    RESULTS: A total of 523 RTC cases were identified in which either blood or urine or both samples were taken for toxicology. 93 cases were positive for both DoA and therapeutic drugs. A total of 37 cases were positive for DoA. Alcohol was present in 5 out of 37 DoA positive cases. Most of the cases seen among 16 to 45 years old (69%) and predominantly in males (93.1%). 29 out of 37 were motorcyclist and the rest were pillion rider and pedestrian. Spearman Correlation statistical test showed a negative relationship between RTC and positive DoA results.

    DISCUSSION AND CONCLUSION: Majority of the DoA cases in RTC were identified in the younger age group and among the motorcyclist. Spearman Correlation statistical test showed that more cases of DoA died in natural or suicidal manner compared to RTC. However, this doesn't reflect the true association of DoA in RTC. This is because of mainly two factors which the delayed effect of DoA that gives negative toxicology test and also the influence of other road users on DoA.

    Matched MeSH terms: Street Drugs
  10. Spencer C, Navaratnam V
    Drug Alcohol Depend, 1980 May;5(5):379-91.
    PMID: 7371500
    A representative sampling of the secondary school population of two states of Malaysia (sample size 16166) indicated that 11% of students had had experience of drug use. Use of a single drug was the common pattern, with cannabis reported most often by older students, and sedatives most often by younger students. A quarter of those who had used drugs reported experience with four or more substances and were likely to have progressed rapidly to heroin. This progression may be facilitated by the ready availability of heroin and the local tradition of smoking or inhaling rather than injecting opiates. Descriptions of drug migration patterns based on Western samples are not fully appropriate worldwide, because the youthful abuser is much influenced both by local market forces and by cultural traditions, even though the epidemic of youthful drug abuse is itself worldwide.
    Matched MeSH terms: Street Drugs*
  11. Soon LP, Subramaniam K, Madon NF, Mohamad Noor MH, Chainchel Singh MK, Mahmood MS
    Indian J Radiol Imaging, 2019 10 30;29(3):305-309.
    PMID: 31741600 DOI: 10.4103/ijri.IJRI_2_19
    Introduction: The aim of this study is to correlate urinary bladder distension and pulmonary edema on postmortem computed tomography (CT) scans with toxicology results in postmortem cases.

    Methods and Results: The study population was the postmortem cases of Asian population ranging from 16 to 75 years old in which blood and/or urine samples sent for alcohol and/or drug of abuse (DoA) analysis in year 2016 at our centre. Out of 434 cases, 54 from each group of positive and negative alcohol and/or DoA. Postmortem findings of lungs and postmortem CT scan urinary bladder volume (UBV) were recorded. Statistical significant correlation was obtained between urinary bladder distension on postmortem CT scan and cases with positive alcohol detection. However, the sensitivity was relatively low at 51.7%, whereas the specificity was 75% at the cut-off point. Low sensitivity and specificity at around 52.7% were obtained for pulmonary edema related to alcohol/DoA. This showed that UBV alone or pulmonary edema alone was not really a good indicator for alcohol or DoA intoxication. However, combination of both indicators provided higher sensitivity (73.3%) although specificity was lowered to 53.8%.

    Conclusion: The findings of postmortem CT scan bladder distension and pulmonary edema could possibly identify intoxication cases but not conclusive.

    Matched MeSH terms: Street Drugs
  12. Singh D, Narayanan S, Vicknasingam B
    Brain Res Bull, 2016 09;126(Pt 1):41-46.
    PMID: 27178014 DOI: 10.1016/j.brainresbull.2016.05.004
    INTRODUCTION: The objective of the paper was to highlight the differences in the traditional and non-traditional users of kratom in the South East Asian and Western contexts.

    METHOD: A literature survey of published kratom studies among humans was conducted. Forty published studies relevant to the objective were reviewed.

    RESULTS: Apart from the differences in the sources of supply, patterns of use and social acceptability of kratom within these two regions, the most interesting finding is its evolution to a recreational drug in both settings and the severity of the adverse effects of kratom use reported in the West. While several cases of toxicity and death have emerged in the West, such reports have been non-existent in South East Asia where kratom has had a longer history of use. We highlight the possible reasons for this as discussed in the literature. More importantly, it should be borne in mind that the individual clinical case-reports emerging from the West that link kratom use to adverse reactions or fatalities frequently pertained to kratom used together with other substances. Therefore, there is a danger of these reports being used to strengthen the case for legal sanction against kratom. This would be unfortunate since the experiences from South East Asia suggest considerable potential for therapeutic use among people who use drugs.

    CONCLUSION: Despite its addictive properties, reported side-effects and its tendency to be used a recreational drug, more scientific clinical human studies are necessary to determine its potential therapeutic value.

    Matched MeSH terms: Street Drugs/adverse effects
  13. Shetty P
    Lancet, 2013 Jun 15;381(9883):2073.
    PMID: 23769222 DOI: 10.1016/S0140-6736(13)61231-3
    Matched MeSH terms: Street Drugs/legislation & jurisprudence
  14. Scorzelli JF
    J Subst Abuse Treat, 1992;9(2):171-6.
    PMID: 1324990
    It is a common belief that a massive effort in law enforcement, preventive education and rehabilitation will result in the elimination of a country's drug problem. Based on this premise. Malaysia in 1983 implemented such a multifaceted anti-drug strategy, and the results of a 1987 study by the author suggested that Malaysia's effort had begun to contribute to a steady decrease in the number of identified drug abusers. Although the number of drug-addicted individuals declined, the country's recidivism rates were still high. Because of this high relapse rate, Malaysia expanded their rehabilitation effort and developed a community transition program. In order to determine the impact of these changes on the country's battle against drug abuse, a follow-up study was conducted in 1990. The results of this study did not clearly demonstrate that the Malaysian effort had been successful in eliminating the problem of drug abuse, and raised some questions concerning the effectiveness of the country's drug treatment programs.
    Matched MeSH terms: Street Drugs*
  15. Scorzelli JF
    J Subst Abuse Treat, 1988;5(4):253-62.
    PMID: 3216439
    The multifaceted drug prevention education and rehabilitation system of Malaysia appears to have contributed to the steady decrease of the number of identified drug abusers in the country. In this article, those components of the Malaysian system that would be most applicable to the American effort were examined. In the same manner, because the fastest growing minority group in the United States are Asian Americans, in which a significant proportion involve persons from Southeast Asia, those components in the Malaysian system that are applicable to Southeast Asian Americans were examined.
    Matched MeSH terms: Street Drugs*
  16. Saref A, Suraya S, Singh D, Grundmann O, Narayanan S, Swogger MT, et al.
    J Ethnopharmacol, 2019 Jun 28;238:111876.
    PMID: 31014959 DOI: 10.1016/j.jep.2019.111876
    ETHNOPHARMACOLOGICAL RELEVANCE: Mitragyna speciosa (Korth.) is a traditional medicinal plant widely used in Southeast Asia for its opioid-like effects. Although kratom produces analgesia through binding of mitragynine and other alkaloids at the mu-opioid receptor (MOR), the association of long-term kratom use with adverse opioid-like effects remains unknown.

    AIM OF THE STUDY: To determine the self-reported prevalence and severity of opioid-related adverse effects after kratom initiation in a cohort of illicit opioid users.

    MATERIALS AND METHODS: A total of 163 illicit opioid users with current kratom use history were recruited through convenience sampling from the northern states of Peninsular Malaysia. Face-to-face interviews were conducted using a semi-structured questionnaire.

    RESULTS: Respondents were all males, majority Malays (94%, n = 154/163), with a mean age of 37.10 years (SD = 10.9). Most were single (65%, n = 106/163), had 11 years of education (52%, n = 85/163) and employed (88%, n = 144/163). Half reported using kratom for over >6 years (50%, n = 81/163), and 41% consumed >3 glasses of kratom daily (n = 67/163). Results from Chi-square analysis showed kratom initiation was associated with decreased prevalence of respiratory depression, constipation, physical pain, insomnia, depression, loss of appetite, craving, decreased sexual performance, weight loss and fatigue.

    CONCLUSIONS: Our findings indicate that kratom initiation (approximately 214.29 mg of mitragynine) was associated with significant decreases in the prevalence and severity of opioid adverse effects.

    Matched MeSH terms: Street Drugs
  17. Saref A, Suraya S, Singh D, Grundmann O, Narayanan S, Swogger MT, et al.
    J Psychoactive Drugs, 2019 11 04;52(2):138-144.
    PMID: 31682782 DOI: 10.1080/02791072.2019.1686553
    This study sought to determine the relationship between kratom (Mitragyna speciosa) initiation and regular consumption of illicit drugs and HIV risk behaviors in a cohort of illicit drug users in Malaysia. 260 illicit drug users with current kratom use were recruited through convenience sampling for this cross-sectional study. All were male, with the majority being Malays (95%, n = 246/260). Results suggest that kratom initiation was associated with significant decrease in the regular use of heroin (odds ratio (OR) = 0.50, 95% confidence interval (CI): 0.40- 0.72; p = .0001), methamphetamine (OR = 0.23, CI: 0.16- 0.35; p < .0001), and amphetamine (OR = 0.17, CI: 0.09- 0.34; p < .0001). Kratom initiation was also associated with reduction in regular HIV risk behaviors such as having sex with sex workers (OR = 0.20, CI: 0.12-0.32; p < .0001), using drugs before sexual intercourse (OR = 0.20, CI: 0.13- 0.31; p < .0001), injecting behaviors (OR = 0.10, CI: 0.04- 0.25; p < .0001), sharing of injection equipment (OR = 0.13, CI: 0.04- 0.43; p < .0001), and injecting with other injection drug users (IDUs) (OR = 0.07, CI: 0.02- 0.24; p < .0001).
    Matched MeSH terms: Street Drugs*
  18. Reid G, Kamarulzaman A, Sran SK
    Int J Drug Policy, 2007 Mar;18(2):136-40.
    PMID: 17689356
    In Malaysia the response to illicit drug use has been largely punitive with the current goal of the Malaysian government being to achieve a drug-free society by 2015. This paper outlines the results of a desk-based situation assessment conducted over a 3-week period in 2004. Additional events, examined in 2005, were also included to describe more recent policy developments and examine how these came about. Despite punitive drug policy there has been a substantial rise in the number of drug users in the country. Over two-thirds of HIV/AIDS cases are among injecting drug users (IDUs) and there has been an exponential rise in the number of cases reported. Further, data suggest high risk drug use practices are widespread. Harm reduction initiatives have only recently been introduced in Malaysia. The successful piloting of substitution therapies, in particular methadone and buprenorphine, is cause for genuine hope for the rapid development of such interventions. In 2005 the government announced it will allow methadone maintenance programmes to operate beyond the pilot phase and needle and syringe exchange programmes will be established to serve the needs of IDUs.
    Matched MeSH terms: Street Drugs/legislation & jurisprudence*
  19. Razali MM, Kliewer W
    Addict Behav, 2015 Nov;50:149-56.
    PMID: 26135336 DOI: 10.1016/j.addbeh.2015.06.022
    This study investigated risk and protective factors for recreational and hard drug use in Malaysian adolescents and young adults.
    Matched MeSH terms: Street Drugs*
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