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  1. Darshan Singh, Suresh Narayanan, Oliver Grundmann, Nelson Jeng Yeou Chear, Vikneswaran Murugaiyah, Shahrul Bariyah Sahul Hamid, et al.
    MyJurnal
    Introduction: Kratom or (Mitragyna speciosa) leaves are consumed as a folk remedy and opioid substitute in the Southeast Asian region. There is still a lack of information about the long-term or toxic-causing effects of kratom use. Methods: A total of thirteen regular kratom users, with long-term (>20 twenty years) kratom use history were recruited for this cross-sectional pilot study. Respondents were required to undergo a blood-test and laboratory anaysis was conducted to determine the mitragynine content in an acquired street sample of kratom. Results: The regular, long- term consumption of brewed kratom decoction did not cause any significant alterations in haematological, kidney, liver, thyroid, inflammatory and gastrointestinal analytes in a cohort of kratom users who had no history of substance misuse. However, those who had a higher intake (>3 glasses per day) of kratom exhibited higher lipid values (except for HDL-cholesterol), and a moderate elevation of homocysteine level. Conclusion: Long-term (>20 years with a daily intake of 87.54mg of mitragynine) kratom consumption was not associated with altered biochemical levels, although prolonged and heavy use (>3 glasses daily) may result in cardiovascular risks. The latter finding, however, requires further investigation.
  2. Dzul Azri Mohamed Noor, Baharudin Ibrahim, Vikneswaran, Murugaiyah, Balamurugan, Tangiisuran, Amer Hayat Khan, Fahad Saleem, et al.
    MyJurnal
    Medicine is an essential need for many people to treat their illness. Creating awareness among general public regarding medicines use and common illnesses can promote healthy lifestyles among them. The objectives of this study are to determine public knowledge and perception of medicines use and; to explore the pattern of medicines used in the past 3 months. A cross‐sectional survey was carried out among the general public in Pulau Pinang. People who were using medications during the time of the survey or in the last 3 months were invited to participate in the study. Only Malaysians ≥18 years were selected by convenient sampling to participate in the survey. The results of this study showed that most of the respondents were using some sort of medications during the last 3 months. Around 30% did not read the label of the medicines before use. Furthermore, participants had low awareness towards some aspects of medicines use such as the name of generic and brand medicines, overuse of paracetamol or vitamins and their side effects, discontinuation of antibiotics, storing ointments and syrups in refrigerator, and the side effects of medicines registered in Malaysia. Efforts are still needed to increase the awareness of medicines use among the general public. More quantitative studies are needed to understand the factors that may influence public knowledge and perceptions on the use of medicines.
  3. Tan WN, Khairuddean M, Wong KC, Khaw KY, Vikneswaran M
    Fitoterapia, 2014 Sep;97:261-7.
    PMID: 24924287 DOI: 10.1016/j.fitote.2014.06.003
    A triflavanone, Garcineflavanone A (1) and a biflavonol, Garcineflavonol A (2) have been isolated from the stem bark of Garcinia atroviridis (Clusiaceae), collected in Peninsular Malaysia. Their structures were established using one and two-dimensional NMR, UV, IR and mass spectrometry and evaluated in vitro for their acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) enzymes inhibitory activity. Molecular docking studies of the isolated compounds were performed using docking procedure of AutoDock to disclose the binding interaction and orientation of these molecules into the active site gorge.
  4. Christapher PV, Parasuraman S, Raj PV, Mohammed Saghir SA, Asmawi MZ, Vikneswaran M
    Pharmacogn Mag, 2016 Jul;12(Suppl 4):S424-S430.
    PMID: 27761069
    To investigate the antihyperlipidemic, antioxidant, and cytotoxic effect of aqueous and methanol extract of leaves of Polygonum minus.
  5. Christapher PV, Parasuraman S, Christina JM, Asmawi MZ, Vikneswaran M
    Pharmacognosy Res, 2015 Jan-Mar;7(1):1-6.
    PMID: 25598627 DOI: 10.4103/0974-8490.147125
    Polygonum minus (Polygonaceae), generally known as 'kesum' in Malaysia is among the most commonly used food additive, flavoring agent and traditionally used to treat stomach and body aches. Raw or cooked leaves of P. minus are used in digestive disorders in the form of a decoction and the oil is used for dandruff. The pharmacological studies on P. minus have demonstrated antioxidant, in vitro LDL oxidation inhibition, antiulcer activity, analgesic activity, anti-inflammatory activity, in vitro antiplatelet aggregation activity, antimicrobial activity, digestive enhancing property and cytotoxic activity. The spectroscopic studies of essential oil of P. minus showed the presence of about 69 compounds, which are responsible for the aroma. The phytochemical studies showed presence of flavonoids and essential oils. This review is an effort to update the botanical, phytochemical, pharmacological and toxicological data of the plant P. minus.
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