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  1. Sthaneshwar P, Chan SP
    Malays J Pathol, 2010 Jun;32(1):43-7.
    PMID: 20614725 MyJurnal
    Type IV collagen is the principal component of glomerular basement membrane and messangial matrix. Studies have shown increased levels of urinary type IV collagen (uIV) in diabetic patients compared to healthy controls. The concentration of uIV increases gradually as diabetic nephropathy progresses.
    AIM AND METHOD: This study was carried out to determine whether urinary type IV collagen (uIV) can serve as an indicator of diabetic nephropathy. Using a sandwich enzyme immunoassay technique, uIV excretion was determined in 30 type 2 diabetic patients with normoalbuminuria and 20 patients with microalbuminuria.
    RESULTS: uIV excretion was significantly increased in type 2 diabetics, in both normoalbuminuric and microalbuminuric patients, compared with healthy controls. The increase in urinary type IV collagen was well correlated with the amount of urinary albumin but not with HbA1C.
    CONCLUSION: Our findings that uIV is higher in those with microalbuminuria and correlates with albuminuria, support uIV as an indicator of diabetic nephropathy. Whether the increased uIV excretion would predict the impending renal failure needs further confirmation.
  2. Chan SP, Colagiuri S
    Diabetes Res Clin Pract, 2015 Oct;110(1):75-81.
    PMID: 26361859 DOI: 10.1016/j.diabres.2015.07.002
    AIMS: Sulfonylureas are well positioned in treating type 2 diabetes, after lifestyle modification and metformin. The sulfonylurea gliclazide was given preference over glibenclamide in older people with type 2 diabetes in the World Health Organization model list of essential medicines. Consequently, a systematic review and meta-analysis of randomized controlled trials of the efficacy and safety of gliclazide versus other oral insulinotropic agents (sulfonylureas, dipeptidyl peptidase-4 inhibitors, and glinides) was performed.

    METHODS: Two reviewers searched MEDLINE for studies of ≥12 weeks duration in adults with type 2 diabetes. The key search word was "gliclazide", filtered with "randomized controlled trial", "human" and "19+ years". Differences were explored in mean change in glycated hemoglobin (HbA(1c)) from baseline (primary outcome) and risk of hypoglycemia (secondary outcome) between gliclazide and other oral insulinotropic agents; and other sulfonylureas.

    RESULTS: Nine out of 181 references reported primary outcomes, of which 7 reported secondary outcomes. Gliclazide lowered HbA1c more than other oral insulinotropic agents, with a weighted mean difference of -0.11% (95%, CI -0.19 to -0.03%, P=0.008, I(2)=60%), though not more than other sulfonylureas (-0.12%; 95%, CI -0.25 to 0.01%, P=0.07, I(2)=77%). Risk of hypoglycemia with gliclazide was not different to other insulinotropic agents (RR 0.85; 95%, CI 0.66 to 1.09, P=0.20, I(2)=61%) but significantly lower than other sulfonylureas (RR 0.47; 95%, CI 0.27 to 0.79, P=0.004, I(2)=0%).

    CONCLUSION: Compared with other oral insulinotropic agents, gliclazide significantly reduced HbA1c with no difference regarding hypoglycemia risk. Compared with other sulfonylureas, HbA1c reduction with gliclazide was not significantly different, but hypoglycemia risk was significantly lower.

  3. Vijay AP, Chan SP
    JUMMEC, 2009;12(2):47-56.
    MyJurnal
    Achieving and maintaining good glycaemic control remains an important goal in the management of this common and prevalent disorder. Recent evidence from important megatrials, ACCORD, ADVANCE, VADT, UKPDS-10 year follow-up as well as the STENO-2 follow-up study, have cleared doubts concerning the benefits of targeting good glycaemic control. For the first time, we have the reassurance that macrovascular benefits can be realised from good glycaemic control. The legacy effect of prior good glucose control from the UKPDS-10 year follow-up, reinforces the results seen from the DCCT-EDIC (for Type 1 diabetes). The Intervention Phase of the UKPDS revealed benefits for reduction of microvascular complications, while it was only at the end of the Post-Trial Monitoring Phase where significant improvements in both micro and macrovascular outcomes were seen. The other three Trials assessing the effect of glycaemic control on cardiovascular outcomes, although largely negative for CV benefit, give valuable insight towards appropriate patient characteristics for which aggressive glucose control can and should be instituted. Individualising glycaemic targets, which has been the approach that many clinicians have been practising, has received new impetus albeit with clearer details. Getting to glycaemic goal early in the course of T2DM and Doing to Safely (Avoiding hypoglycaemia)are the key ingredients to successful management. The legacy of the memory of initial good metabolic/glycaemic control is investment in good health with benefits of reductions in both micro and more importantly, macrovascular disease, years later. Multifactorial interventions that include blood pressure, lipid lowering in addition to glucose control in these individuals with the Metabolic Syndrome result in more immediate beneficial additive effects on cardiovascular outcomes.
  4. Chee, Winnie Siew Swee, Ting, Geik Poh, Tan, Soon Yean, Chan, Siew Pheng, Zaitun Yassin, Suriah Abdul Rahman
    MyJurnal
    Kehilangan jisim tulang adalah lebih ketara selepas menopaus. Jangka masa menopaus dan umur yang meningkat dikaitkan dengan penurunan jisim tubuh tanpa lemak, peningkatan lemak badan dan peningkatan berat badan. Kajian ini melihat sumbangan relatif jisim tubuh tanpa lemak dan lemak badan ke atas ketumpatan mineral tulang (KMT) di kalangan 139 wanita Cina posmenopaus sihat di Kuala Lumpur. KMT di kawasan seluruh tubuh, tulang belakang ( L2-L4), leher femur dan keseluruhan tulang pinggul diukur dengan alat dual-energy X-ray absorptiometry (DxA). Hasil kajian mendapati 80% daripada wanita posmenopaus Cina mempunyai jisim tulang yang rendah (osteopenia) manakala 8% daripada mereka mengalami osteoporosis di bahagian tulang belakang atau tulang pinggul. Secara keseluruhan, lemak badan mempunyai korelasi yang positif dengan KMT di semua bahagian diukur (keseluruhan tubuh, r = 0.265, p < 0.001; tulang belakang r = 0.214, p < 0.05, leher femur, r = 0.254, p < 0.001; keseluruhan tulang pinggul r = 0.332, p < 0.001). Jisim tubuh tanpa lemak juga mempunyai korelasi yang positif dengan KMT kebanyakan kawasan diukur (keseluruhan tubuh, r = 0.239, p < 0.001; leher femur r = 0.365, p < 0.001; keseluruhan tulang pinggul r = 0.352, p < 0.001) kecuali tulang belakang. Analisis regresi menunjukkan lemak badan dapat meramal KMT pada keseluruhan badan (p < 0.0001) dan tulang belakang (p < 0.005) manakala jisim tubuh tanpa lemak dapat meramal KMT pada tulang femur dan tulang pinggul (p < 0.0001). Hasil kajian menunjukkan kedua-dua lemak tubuh dan jisim tubuh tanpa lemak memainkan peranan dalam mempengaruhi KMT, di mana lemak badan memainkan peranan yang lebih di kalangan wanita posmenopaus. Oleh itu, wanita posmenopaus perlu elakkan mempunyai berat badan yang terlalu rendah (kurang lemak badan) dan mengekalkan jisim tubuh tanpa lemak untuk mencegah osteoporosis.
  5. Chan SP, Scott BB, Sen SS
    PMID: 20977729 DOI: 10.1186/1471-2474-11-248
    BACKGROUND: Osteoporosis treatment guidelines recommend calcium and vitamin D supplementation for both prevention as well as treatment, however, compliance with these guidelines is often unsatisfactory. This study investigated the opinion of Asian physicians and Asian patients regarding vitamin D and calcium and patients' use of both.
    METHODS: Physicians selected from Malaysia, Taiwan, Philippines, Korea and Singapore were asked to grade the significance of vitamin D and calcium in the treatment of osteoporosis and their patients' use of these supplements. In addition, physicians recruited seven eligible osteoporotic women to answer a questionnaire to determine their use of vitamin D and calcium, and their attitudes and beliefs regarding these supplements.
    RESULTS: In total, 237 physicians and 1463 osteoporosis patients completed the questionnaire. The results revealed that 22% of physicians in Malaysia, 12% in Taiwan, 72% in the Philippines, 50% in Korea and 24% in Singapore rated the importance of vitamin D supplementation as being extremely important. For calcium, 27% of physicians in Malaysia, 30% in Taiwan, 80% in the Philippines, 50% in Korea and 38% in Singapore rated the importance as being extremely important. Forty-three percent of patients in Malaysia, 38% in Taiwan, 73% in the Philippines, 35% in Korea and 39% in Singapore rated the importance of vitamin D as being extremely important. For calcium, 69% of patients in Malaysia, 58% in Taiwan, 90% in the Philippines, 70% in Korea and 55% in Singapore rated the importance as being extremely important. In addition, results of the patient questionnaire revealed that only a very small number regularly took both supplements. In addition, the results indicated that, with the exception of patients from the Philippines, the majority of patients had no or infrequent discussion with their physician about vitamin D and calcium.
    CONCLUSIONS: There is generally suboptimal appreciation by both physicians and patients of the importance of vitamin D and calcium for maintenance of bone health as reflected in the low number of patients who reported regularly taking these supplements. Recognition of this problem should translate to appropriate action to improve education for both physicians and patients, with a goal to increase use of these supplements among Asian patients with osteoporosis.
  6. Chan KS, Looi LM, Chan SP
    Malays J Pathol, 1993 Dec;15(2):155-8.
    PMID: 8065179
    A 35-year-old Chinese man who was known to have insulin-dependent diabetes mellitus was admitted for fever and weight loss. During his hospital stay, he fell to his death from his ward at the twelfth floor. The clinical features, radiological findings and gross organ changes at autopsy closely simulated miliary tuberculosis. Histology, however, revealed extensive necrosis of the adrenal glands, lungs, spleen, kidneys and thyroid associated with the presence of Histoplasma capsulatum organisms. This case highlights the similarity both clinically and pathologically between histoplasmosis and tuberculosis and emphasizes the need to be aware of this infection in a nonendemic area among patients with a compromised immune system.
  7. Chung WW, Chua SS, Lai PS, Chan SP
    Patient Prefer Adherence, 2014;8:1185-94.
    PMID: 25214772 DOI: 10.2147/PPA.S66619
    Background: Diabetes mellitus is a lifelong chronic condition that requires self-management. Lifestyle modification and adherence to antidiabetes medications are the major determinants of therapeutic success in the management of diabetes.
    Purpose: To assess the effects of a pharmaceutical care (PC) model on medication adherence and glycemic levels of people with type 2 diabetes mellitus.
    Patients and methods: A total of 241 people with type 2 diabetes were recruited from a major teaching hospital in Malaysia and allocated at random to the control (n=121) or intervention (n=120) groups. Participants in the intervention group received PC from an experienced pharmacist, whereas those in the control group were provided the standard pharmacy service. Medication adherence was assessed using the Malaysian Medication Adherence Scale, and glycemic levels (glycated hemoglobin values and fasting blood glucose [FBG]) of participants were obtained at baseline and after 4, 8, and 12 months.
    Results: At baseline, there were no significant differences in demographic data, medication adherence, and glycemic levels between participants in the control and intervention groups. However, statistically significant differences in FBG and glycated hemoglobin values were observed between the control and intervention groups at months 4, 8, and 12 after the provision of PC (median FBG, 9.0 versus 7.2 mmol/L [P<0.001]; median glycated hemoglobin level, 9.1% versus 8.0% [P0.001] at 12 months). Medication adherence was also significantly associated with the provision of PC, with a higher proportion in the intervention group than in the control group achieving it (75.0% versus 58.7%; P=0.007).
    Conclusion: The provision of PC has positive effects on medication adherence as well as the glycemic control of people with type 2 diabetes. Therefore, the PC model used in this study should be duplicated in other health care settings for the benefit of more patients with type 2 diabetes.
    Keywords: pharmaceutical care, medication adherence, glycemic control, type 2 diabetes mellitus
    Study site: major teaching hospital in Malaysia
  8. Lai PS, Chua SS, Chan SP
    Int J Clin Pharm, 2013 Aug;35(4):629-37.
    PMID: 23677816 DOI: 10.1007/s11096-013-9784-x
    BACKGROUND: This study describes the analysis of secondary outcomes from a previously published randomised controlled trial, which assessed the effects of pharmaceutical care on medication adherence, persistence and bone turnover markers. The main focus of this manuscript is the effect of the provision of pharmaceutical care on these secondary outcomes, and details on the design of the intervention provided, the osteoporosis care plan and materials used to deliver the intervention.
    OBJECTIVES: To evaluate the effects of pharmaceutical care on knowledge, quality of life (QOL) and satisfaction of postmenopausal osteoporotic women prescribed bisphosphonates, and their associating factors.
    SETTING: Randomised controlled trial, performed at an osteoporosis clinic of a tertiary hospital in Malaysia.
    METHODS: Postmenopausal women diagnosed with osteoporosis (T-score ≤-2.5/lowtrauma fracture), just been prescribed weekly alendronate/risedronate were randomly allocated to receive intervention or standard care (controls). Intervention participants received a medication review, education on osteoporosis, risk factors, lifestyle modifications, goals of therapy, side effects and the importance of medication adherence at months 0, 3, 6 and 12.
    MAIN OUTCOMES MEASURE: Knowledge, QOL and satisfaction.
    RESULTS: A total of 198 postmenopausal osteoporotic women were recruited: intervention = 100 and control = 98. Intervention participants reported significantly higher knowledge scores at months 3 (72.50 vs. 62.50 %), 6 (75.00 vs. 65.00 %) and 12 (78.75 vs. 68.75 %) compared to control participants. QOL scores were also lower (which indicates better QOL) at months 3 (29.33 vs. 38.41), 6 (27.50 vs. 36.56) and 12 (27.53 vs. 37.56) compared to control participants. Similarly, satisfaction score was higher in intervention participants (93.67 vs. 84.83 %). More educated women, with back pain, who were provided pharmaceutical care had better knowledge levels. Similarly, older, more educated women, with previous falls and back pain tend to have poorer QOL, whilst women who exercised more frequently and were provided pharmaceutical care had better QOL. Satisfaction also increased as QOL increases and when provided pharmaceutical care.
    CONCLUSION: The provision of pharmaceutical care improved knowledge, QOL and satisfaction in Malaysian postmenopausal osteoporotic women, showing that pharmacists have the potential to improve patients' overall bone health. Policymakers should consider placing a clinical pharmacist in the osteoporosis clinic to provide counselling to improve these outcomes.
    Study site: Osteoporosis clinics, University Malaya Medical Centre (UMMC), Kuala Lumpur, Malaysia
  9. Lai PS, Chua SS, Chong YH, Chan SP
    Curr Med Res Opin, 2012 Aug;28(8):1347-55.
    PMID: 22746354 DOI: 10.1185/03007995.2012.708326
    Generic medicines are often used in public hospitals. However, data on the quality of generic alendronate, its efficacy, side-effects and medication adherence in clinical practice is scarce. Therefore, this study aimed to compare the side-effects and medication adherence of generic (apo-alendronate*) and proprietary alendronate (Fosamax†).
  10. Yeap SS, Othman AZ, Zain AA, Chan SP
    Int J Rheum Dis, 2012 Feb;15(1):17-24.
    PMID: 22324943 DOI: 10.1111/j.1756-185X.2011.01653.x
    AIM: To determine if baseline vitamin D levels would influence the gain in bone mineral density (BMD) in female systemic lupus erythematosus (SLE) patients on corticosteroids (CS) taking bone-active medication.

    METHOD: Premenopausal SLE patients participating in a trial assessing the efficacy of calcium alone, calcitriol and calcium, and alendronate and calcium, on BMD in patients on CS, were studied. Patients were randomly allocated to the treatment groups at the start of the study and followed up for 2 years. Serum 25-hydroxy vitamin D [25(OH)D] was measured at baseline.

    RESULTS:   Thirty-eight patients were studied. One (2%) patient had osteoporosis, nine (24%) had osteopenia and all others had normal BMD. The mean baseline 25(OH)D levels were 21.6 ± 4.6 ng/mL (± 1 SD). Twelve (32%) patients had vitamin D deficiency [25(OH)D < 20 ng/mL]. There was a significant negative correlation between SLEDAI scores and 25(OH)D levels, that is, patients with high SLEDAI scores had significantly lower 25(OH)D levels (P = 0.033). Left femoral neck BMD was significantly lower in the deficient compared to insufficient group (P = 0.042). There was a trend toward better BMD gain at 2 years in the vitamin D insufficient compared to the deficient group, which did not reach statistical significance.

    CONCLUSION: This study showed that in female SLE patients, low vitamin D levels are associated with higher disease activity and suggests that patients who have higher vitamin D levels have a better BMD response during treatment with bone-active agents.
  11. Siow JY, Lai PS, Chua SS, Chan SP
    Int J Pharm Pract, 2009 Oct;17(5):305-11.
    PMID: 20214273
    In recent years, the usage of activated vitamin D (alpha-calcidol and calcitriol) in the University Malaya Medical Centre (UMMC) has escalated and this has put unnecessary burden on the hospital's limited health care budget. The main aim of this study was to determine the effects of a clinical pharmacist's intervention in reducing the inappropriate use of activated vitamin D.
  12. Mohamed M, Hussein Z, Nazeri A, Chan SP
    Med J Malaysia, 2016 Aug;71(4):177-185.
    PMID: 27770116 MyJurnal
    The aim of the study was to re-evaluate the relationship between hospital based diabetes care delivery and prevention of complications.
  13. Chan SP, Lim LL, Chan JCN, Matthews DR
    Diabetes Ther, 2023 May;14(5):823-838.
    PMID: 36920594 DOI: 10.1007/s13300-023-01386-5
    Despite the availability of new treatment classes, glycaemic control in patients with diabetes remains suboptimal globally. The latter is associated with high risk of premature mortality related to diabetes and its microvascular and macrovascular complications. Practice guidelines typically focus on glycated haemoglobin 
  14. Lai PS, Chua SS, Tan CH, Chan SP
    BMC Med Res Methodol, 2012 Feb 24;12:18.
    PMID: 22361093 DOI: 10.1186/1471-2288-12-18
    BACKGROUND: Patient's knowledge on diabetes, hypertension and hyperlipidaemia and its medications can be used as one of the outcome measures to assess the effectiveness of educational intervention. To date, no such instrument has been validated in Malaysia. Therefore, the aim of this study was to evaluate the validity and reliability of the Diabetes, Hypertension and Hyperlipidemia (DHL) knowledge instrument for assessing the knowledge of patients with type 2 diabetes in Malaysia.

    METHODS: A 28-item instrument which comprised of 5 domains: diabetes, hypertension, hyperlipidemia, medications and general issues was designed and tested. One point was given for every correct answer, whilst zero was given for incorrect answers. Scores ranged from 0 to 28, which were then converted into percentage. This was administered to 77 patients with type 2 diabetes in a tertiary hospital, who were on medication(s) for diabetes and who could understand English (patient group), and to 40 pharmacists (professional group). The DHL knowledge instrument was administered again to the patient group after one month. Excluded were patients less than 18 years old.

    RESULTS: Flesch reading ease was 60, which is satisfactory, while the mean difficulty factor(SD) was 0.74(0.21), indicating that DHL knowledge instrument was moderately easy. Internal consistency of the instrument was good, with Cronbach's α = 0.791. The test-retest scores showed no significant difference for 26 out of the 28 items, indicating that the questionnaire has achieved stable reliability. The overall mean(SD) knowledge scores was significantly different between the patient and professional groups [74.35(14.88) versus 93.84(6.47), p < 0.001]. This means that the DHL knowledge instrument could differentiate the knowledge levels of participants. The DHL knowledge instrument shows similar psychometric properties as other validated questionnaires.

    CONCLUSIONS: The DHL knowledge instrument shows good promise to be adopted as an instrument for assessing diabetic patients' knowledge concerning their disease conditions and medications in Malaysia.

  15. Raman RP, Taiyeb-Ali TB, Chan SP, Chinna K, Vaithilingam RD
    BMC Oral Health, 2014;14:79.
    PMID: 24965218 DOI: 10.1186/1472-6831-14-79
    40 subjects with type 2 diabetes and moderate to severe CP were randomly distributed to groups receiving either NSPT or OHI. Periodontal parameters, glycosylated haemoglobin (HbA1c) and high-sensitivity C-reactive protein (hs-CRP) were evaluated at baseline, 2- and 3-months intervals.
  16. Sheu WH, Ji LN, Nitiyanant W, Baik SH, Yin D, Mavros P, et al.
    Diabetes Res Clin Pract, 2012 May;96(2):141-8.
    PMID: 22265956 DOI: 10.1016/j.diabres.2011.12.027
    AIMS: We examined the relationship of hypoglycemic symptoms with health-related quality of life and worry about hypoglycemia among type 2 diabetic patients using oral antihyperglycemic agents (AHA) in the Asia-Pacific region.
    METHODS: A total of 2257 type 2 diabetic patients with at least 6 months of oral AHA were enrolled in China, Korea, Malaysia, Thailand, and Taiwan. Quality of life was measured with the EuroQol Visual Analog Scale (EQ-VAS) and EuroQol-5 Dimensions questionnaire (EQ-5D), and worry about hypoglycemia with the worry subscale of the Hypoglycemic Fear Survey-II (HFS).
    RESULTS: The mean (SD) age was 58.7 (10.2) years and HbA(1c) was 7.5% (1.5). The proportion of patients with an HbA(1c) <6.5% and <7% was 24.9% and 41.8%, respectively. Hypoglycemic symptoms in the prior 6 months were reported by 35.8% of patients. Mean scores on the EQ-VAS and the EQ-5D were significantly lower for patients who had hypoglycemic symptoms compared to those who did not (73.6 vs. 76.9, p<0.001; 0.88 vs. 0.90, p<0.0001, respectively), whereas mean score on the HFS was significantly higher (12.5 vs. 6.3, p<0.001). In multivariate models, hypoglycemic symptoms were independently associated with scores on the EQ-5D, EQ-VAS, and HFS (all p ≤ 0.01-0.001). Symptom severity was positively associated with fear of hypoglycemia (all p ≤ 0.001).
    CONCLUSION: Hypoglycemic symptoms were associated with reduced quality of life and increased patient worry in patients with type 2 diabetes treated with AHA.
  17. Chan SP, Ji LN, Nitiyanant W, Baik SH, Sheu WH
    Diabetes Res Clin Pract, 2010 Aug;89(2):e30-2.
    PMID: 20541826 DOI: 10.1016/j.diabres.2010.05.008
    Symptoms of hypoglycemia were reported by 35.8% of patients with type 2 diabetes treated with oral antihyperglycemic agents in the Asia-Pacific region. Symptoms were severe in 11.6% and very severe in 8.2% of patients experiencing hypoglycemia.
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