Displaying publications 1 - 20 of 34 in total

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  1. Segasothy M, Swaminathan M, Kong NC
    Med J Malaysia, 1994 Dec;49(4):412-5.
    PMID: 7674979
    We report two patients who had cerebral malaria, heavy parasitemia, hyperbilirubinemia, hypercatabolism with rapid rises of blood urea and serum creatinine and acute renal failure. There was no evidence of intravascular hemolysis. Renal biopsy was consistent with acute tubular necrosis. Both patients responded to treatment with intravenous quinine and dialysis.
  2. Goleg FA, Kong NC, Sahathevan R
    Int Urol Nephrol, 2014 Aug;46(8):1581-7.
    PMID: 24671275 DOI: 10.1007/s11255-014-0694-1
    PURPOSE: End-stage kidney disease (ESKD) is now a worldwide pandemic. In concert with this, ESKD in Libya has also increased exponentially in recent decades. This review aims to define the magnitude of and risks for this ESKD epidemic among Libyans as there is a dearth of published data on this subject.

    METHODS: A systematic review was conducted by searching PubMed, EMBASE and Google scholar databases to identify all relevant papers published in English from 2003 to 2012, using the following keywords: end stage, terminal, chronic, renal, kidney, risk factors, Arab, North Africa and Libya.

    RESULTS: In 2003, the reported incidence of ESKD and prevalence of dialysis-treated ESKD in Libya were the same at 200 per million population (pmp). In 2007, the prevalence of dialysis-treated ESKD was 350 pmp, but the true incidence of ESKD was not available. The most recent published WHO data in 2012 showed the incidence of dialysis-treated ESKD had risen to 282 pmp and the prevalence of dialysis-treated ESKD had reached 624 pmp. The leading causes of ESKD were diabetic kidney disease (26.5 %), chronic glomerulonephritis (21.1 %), hypertensive nephropathy (14.6 %) and congenital/hereditary disease (12.3 %). The total number of dialysis centers was 40 with 61 nephrologists. Nephrologist/internist to patient ratio was 1:40, and nurse to patient ratio was 1:3.7. Only 135 living-related kidney transplants had been performed between 2004 and 2007. There were no published data on most macroeconomic and renal service factors.

    CONCLUSIONS: ESKD is a major public health problem in Libya with diabetic kidney disease and chronic glomerulonephritis being the leading causes. The most frequent co-morbidities were hypertension, obesity and the metabolic syndrome. In addition to provision of RRT, preventive strategies are also urgently needed for a holistic integrated renal care system.

  3. Cheong SK, Chin SF, Kong NC
    Malays J Pathol, 1997 Dec;19(2):121-5.
    PMID: 10879252
    Systemic lupus erythematosus (SLE) is an autoimmune disease characterised by increased B cell activity and depressed T cell function. However, the contribution of the immunoregulatory system to its pathogenesis is still unclear. The recent development in the production of monoclonal antibodies and the availability of bench-top flow cytometers have allowed rapid quantitation of peripheral blood lymphocyte subsets. We analysed the distribution of the lymphocyte subsets in 24 patients with active SLE and 18 with inactive SLE. The distribution of immunoregulatory cells in 72 normal volunteers was used as control. Statistical analysis showed that there were significant differences between both the SLE groups and the normal controls, for total lymphocytes, T cells, B cells, T helper cells, T suppressor cells, T helper/suppressor ratio and natural killer cells. There was a significant difference for T helper cells between active and inactive SLE. T helper cells levels were found to be low in inactive SLE and lower in active SLE. It appears that treatment-induced remissions did not restore the levels of immunoregulatory cells to normal. Thus, T helper cell levels reflect disease activity and longitudinal assays of T helper cells may serve as an indicator of disease reactivation.
  4. Paton NI, Cheong I, Kong NC, Segasothy M
    Med J Malaysia, 1996 Dec;51(4):437-41.
    PMID: 10968030
    One hundred and two patients attending the systemic lupus erythematosus (SLE) clinic of the Department of Medicine, Universiti Kebangsaan Malaysia, were studied retrospectively to determine their survival rates and causes of death. There were 21 deaths. The 1, 5, and 10 year survival rates were 93%, 86% and 70% respectively. There was a bimodal pattern of mortality with more patients dying in the first 2 years or after 5 years of disease. Infection was the direct cause of death in 52% and contributed to a further 19% of deaths. Patients with lupus nephritis had a higher relative risk (RR) of death (RR = 4.34, p < 0.02) although there was no significant increase in risk with any particular histological type on biopsy. Cerebral lupus (RR = 3.08, p < 0.001) and methylprednisolone treatment (RR = 6.24, p < 0.001) were also associated with increased risk of death. Increased awareness of infection and earlier use of antibiotic therapy may improve survival of patients suffering from SLE.
    Study site: SLE clinics, Pusat Perubatan Universiti Kebangsaan Malaysia (PPUKM), Kuala Lumpur, Malaysia
  5. Segasothy M, Swaminathan M, Kong NC, Bennett WM
    Am J Kidney Dis, 1995 Jan;25(1):63-6.
    PMID: 7810535
    This report describes a patient with acute renal failure that resulted from the ingestion of djenkol beans. Features of acute djenkolism include nausea, vomiting, bilateral loin pain, gross hematuria, and oliguria. The blood urea level was 16.2 mmol/L and the serum creatinine was 460 mumol/L. Phase contrast microscopy of the urinary sediment indicated that the hematuria was nonglomerular. Ultrasound of the kidneys showed slightly enlarged kidneys with no features of obstruction. Renal biopsy showed acute tubular necrosis similar to the single animal study reported in the literature. With conservative therapy, which included rehydration with normal saline and alkalinization of the urine with sodium bicarbonate, the acute renal failure resolved. Based on its chemistry, djenkol bean-associated acute renal failure may be analogous to acute uric acid nephropathy.
  6. Fauzi AR, Jeyabalan V, Kong NC, Selvam T
    Saudi J Kidney Dis Transpl, 2003 Apr-Jun;14(2):194-6.
    PMID: 18209446
    Central vein stenosis is usually associated with previous cannulation or trauma to the affected vein. This pathology may present as ipsilateral arm swelling in patients in whom a recent arteriovenous fistula has been prepared for chronic hemodialysis. The presence of central vein stenosis without prior trauma or cannulation is not hitherto reported to the best of our knowledge. We herewith report a patient with end-stage renal disease who was initiated on chronic dialysis using an arteriovenous fistula, who was noted to have central vein stenosis. This was despite her never having had any central vein cannulation or previous known trauma. Venogram confirmed the presence of brachiocephalic vein stenosis. The patient underwent venographic stenting of the involved vein with good success.
  7. Shaharir SS, Mohamed Said MS, Kong NC
    Reumatismo, 2012;64(6):341-9.
    PMID: 23285477 DOI: 10.4081/reumatismo.2012.341
    OBJECTIVES: To investigate the prevalence of thickened carotid intima media thickness (CIMT) and its associated risk factors in patients with lupus nephritis (LN) who were in remission.
    METHODS: This was a cross sectional study in which consecutive LN patients who were in remission and attending our Nephrology/SLE Clinic were included. Their demographic profile, traditional cardiovascular risk factors and treatment medications were evaluated by clinical interview and review of medical records. Carotid intima media thickness (CIMT) was measured using B Mode carotid ultrasonography. CIMT was considered to be abnormally thickened if it exceeded the 75th percentile matched for age-and sex-matched normal controls. The associated factors for thickened CIMT were examined.
    RESULTS: A total of 39 patients with a mean remission duration of 29 ± 24.3 months and on a mean prednisolone dose of 9.10 ± 7.83 mg daily completed the study. Six patients (15.4%) had thickened CIMT. On univariate analysis, male gender, patient age, older age at diagnosis, higher serum CRP levels, greater proteinuria and higher mean cumulative azathioprine dose were associated with thickened CIMT (P<0.05). Lower mean cumulative doses of cyclosporine A (CyA) and mycophenolic acid (MPA) (P<0.05) each were associated with thickened CIMT. Using regression analysis, the associated factors of CIMT were older age at diagnosis and proteinuria.
    CONCLUSIONS: Lupus factors particularly age at diagnosis and proteinuria were the associated factors of thickened CIMT. Larger prospective trials are indicated to confirm our findings.
  8. Cader RA, Mohd R, Gafor HA, Kong NC
    EXCLI J, 2013;12:144-9.
    PMID: 26417223
    Post-transplant lymphoproliferative disorder (PTLD) is a recognized complication exclusive to solid organ transplant recipients and carries a high mortality. We retrospectively reviewed records of all renal transplant recipients under follow up at our institution over the last seven years (2005-2011). We reviewed the patient characteristics, immunosuppression regimen and risk factors for the development of PTLD and its outcomes in our transplant cohort. Four out of 63 patients were diagnosed with PTLD. PTLD was incidentally diagnosed on a transplant biopsy that was performed for an unexplained rise in serum creatinine in three patients. The fourth patient presented with left submandibular lymphadenopathy. Majority presented within 18 months of renal transplantation. After the diagnosis of PTLD on graft biopsy, all patients were fully investigated and two patients had systemic involvement. In the patients with systemic involvement, reduction of immunosuppression and anti B cell therapy with Rituximab was used with good success. The patient with submandibular lymphadenopathy received chemotherapy in addition to reduction of immunosuppression. Three PTLD cases were polyclonal and diagnosed early whereas the fourth case was monoclonal. PTLD can sometimes be incidentally diagnosed on an allograft biopsy performed for rejection. The incidence of PTLD in our centre is higher than reports from other centres but our outcome is good if recognised and treated early.
  9. Paton NI, Cheong IK, Kong NC, Segasothy M
    QJM, 1996 Jul;89(7):531-8.
    PMID: 8759494 DOI: 10.1093/qjmed/89.7.531
    To determine the incidence, types and risk factors for infection in systemic lupus erythematosus (SLE) patients in Kuala Lumpur, Malaysia, we retrospectively reviewed the medical records of 102 patients with definite SLE attending a specialist clinic. Details of major infections (pneumonia or severe infection requiring intravenous therapy) and minor infections, and their time of onset in relation to immunosuppressive therapy and disease flares were recorded. There were 77 major and 163 minor infections during 564 patient-years of follow-up. In the month following a course of pulse methylprednisolone, the incidence of major infection was 20 times higher and the incidence of minor infection was 10 times higher than at other periods (p < 0.0001). In the month after disease flare, the incidence of major infection was 10 times higher and the incidence of minor infection six times higher than at other times (p < 0.0001). After allowing for methylprednisolone therapy and disease flares, there was no increase in the rate of infections during treatment with azathioprine, oral or intravenous cyclophosphamide. There was no effect of renal involvement on infection rate.
  10. Kong NC, Nasruruddin BA, Murad S, Ong KJ, Sukumaran KD
    Lupus, 1994 Oct;3(5):393-5.
    PMID: 7841992 DOI: 10.1177/096120339400300505
    Many studies have shown an association between human leucocyte antigens (HLA) and systemic lupus erythematosus (SLE) in the various study populations. Although SLE is not an uncommon disease in the Malaysian Archipelago, and appears to affect all three major racial groups equally (i.e. Southern Chinese, Malays and Southern Indians), very little information is available on the HLA profiles in the two latter groups. In phase I of our study of the HLA profiles in Malaysian SLE patients, the HLA phenotypes (class I: A, B, C; Class II: DR, DQ) of Malay patients with confirmed SLE and 91 normal Malay controls were determined using the microcytotoxicity assay. The strong association between DR (RR 3.28, P = 0.008) concurs with that reported among Chinese and Japanese populations. Moderate to strong associations with HLA-B 7 (RR 4.99, P = 0.02) and Cw 7 (RR 2.94, P = 0.003) were also found. We believe this is the first report of the association of HLA and SLE in the Malay population.
  11. Tan TT, Lau IS, Kong NC, Zainal AG
    Malays J Pathol, 1997 Jun;19(1):27-33.
    PMID: 10879239
  12. Kong NC, Asmah J, Lim VK, Ong PH, Adam PA
    Ann Acad Med Singap, 1996 Jul;25(4):609-11.
    PMID: 8893941
    Pyomyositis, purportedly a common tropical infection affecting mainly healthy adults and children, appears to be most uncommon in this region. We report a case of pyomyositis caused by a Methicillin-resistant Staphylococcus aureus (MRSA) in a previously healthy army officer. This case serves to illustrate the difficulty in recognising this disease entity, which is why many cases may have been missed. With the increasing incidence of MRSA nosocomial infections, the emergence of MRSA in a hitherto community-acquired infection poses a major concern especially since intravenous drug abuse and acquired immune deficiency syndrome (AIDS) are on the rise in our country. We hope to inculcate greater awareness of this infection.
  13. Kong NC, Morad Z, Suleiman AB, Cheong IK, Lajin I
    Ann Acad Med Singap, 1990 May;19(3):375-9.
    PMID: 2393240
    Nocardiosis is an increasingly recognised opportunistic infection in immunologically incompetent hosts but diagnosis is often delayed. Between December 1975 to October 1988, our two Nephrology Units have encountered five cases of nocardiosis occurring in two post-renal transplant patients, two patients with systemic lupus erythematous (SLE) and one patient with mesangiocapillary glomerulo--nephritis. All were on immunosuppressants at the time. The first three patients presented with predominant pulmonary disease and were cured by combined trimethoprim-sulphamethoxazole (cotrimoxazole) and doxycycline therapy. The patient with limited skin involvement responded to cotrimoxazole alone. However, the last patient with lymphocutaneous disease initially responded to cotrimoxazole (+ chloramphenicol) but developed acute-on-chronic renal failure and relapsed with dose reduction of cotrimoxazole. Alternative treatment with amikacin and doxycycline was instituted with good response. We shall review potential clues that may suggest the diagnosis of nocardiosis and discuss other effective antimicrobial agents.
  14. Kong NC, Shaariah W, Morad Z, Suleiman AB, Wong YH
    Aust N Z J Med, 1990 Oct;20(5):645-9.
    PMID: 2285381
    Cryptococcosis is a known opportunistic infection in immunosuppressed hosts. We report our experience of all cases presenting to our Department between December 1975 and September 1988. Eight post-renal transplant patients and three systemic lupus erythematosus (SLE) patients were affected. All were receiving treatment with steroids, in association with either azathioprine or cyclosporin. The diagnosis of cryptococcal meningitis was initially based on a positive cerebrospinal fluid (CSF) cryptococcal antigen, by latex agglutination test, and subsequently confirmed by cultures. Common clinical presentations, in descending order of frequency, included headaches, fever, mental confusion, epilepsy and papilloedema. Meningism was not a prominent feature. CT brain scans were obtained in eight patients and one showed a focal lesion and one showed cerebral atrophy. Four patients also had an abnormal chest X-ray (CXR) and one had disseminated cryptococcosis. Amphotericin and 5-fluorocytosine were the mainstay of therapy, although ketoconazole alone was subsequently used in three selected patients with cure. Four early deaths occurred in patients with delayed diagnosis and treatment, usually in association with other severe concurrent infections. We conclude that awareness of cryptococcosis is essential in immunocompromised hosts presenting with headache with, or without, mental confusion or fever.
  15. Abdul Ghani R, Zainudin S, Kamaruddin NA, Kong NC
    Singapore Med J, 2009 Jan;50(1):e32-4.
    PMID: 19224067
    Drug-induced acute interstitial nephritis is a well-recognised and important reversible cause of acute renal failure. Peroxisome-proliferator activated receptor-gamma agonists, such as rosiglitazone, have been proven to be safe in chronic kidney disease patients. We describe a 65-year-old man with long-standing diabetes mellitus and hypertension, presenting with a five-day history of fluid overload and uraemic symptoms. There was no ingestion of analgesics, alternative medicine and other nephrotoxic drugs, the only new prescription being rosiglitazone, which was commenced during his last clinic follow-up two weeks prior to presentation. He required haemodialysis with minimal improvement in renal profile, despite cessation of the offending drug. Renal biopsy revealed findings consistent with acute interstitial nephritis. An episode of upper gastrointestinal bleeding with bleeding duodenal ulcer limited the use of steroids. He was treated with a course of mycophenolate mofetil which showed good gradual response and he remained stable with residual renal impairment.
  16. Shaharir SS, Gafor AH, Said MS, Kong NC
    Int J Rheum Dis, 2015 Jun;18(5):541-7.
    PMID: 25294584 DOI: 10.1111/1756-185X.12474
    OBJECTIVE:
    Systemic lupus erythematosus (SLE) is a chronic autoimmune disease and glucocorticoid is the mainstay of treatment in SLE. The reported incidence of steroid-induced diabetes mellitus (SDM) ranged between 1-53%. We sought to investigate the prevalence and associated factors of SDM in patients with SLE.

    METHODOLOGY:
    A total of 100 SLE patients attending the Nephrology/SLE and Rheumatology Clinic, Universiti Kebangsaan Malaysia Medical Centre (UKMMC) who received corticosteroid treatment were recruited. The diagnosis of diabetes mellitus was based on the 2010 American Diabetes Association's criteria. Prevalent cases of SDM were also included. Statistical analysis was performed to determine the factors associated with SDM.

    RESULTS:
    Thirteen of them (13%) developed SDM, with the median onset of diagnosis from commencement of glucocorticoid treatment being 8 years (range 0.5-21 years). Although only seven Indians were recruited into the study, three of them (42.9%) had SDM compared to Malays (9.3%) and Chinese (12.8%) (P ≤ 0.05). Univariate and multivariate analysis showed that higher numbers of system or organ involvement in SLE, abdominal obesity, hypertriglyceridemia and daily prednisolone of ≥ 1 mg/kg/day were the important associated factors of SDM (P ≤ 0.05). Meanwhile, hydroxychloroquine (HCQ) use was associated with reduced SDM prevalence (P < 0.05).

    CONCLUSION:
    The prevalence of SDM among SLE patients was 13% and Indians were more prone to develop SDM compared to other races. Higher numbers of system involvement, abdominal obesity, hypertriglyceridemia and the use of oral prednisolone of ≥ 1 mg/kg/day were associated with SDM, while HCQ use potentially protects against SDM.

    © 2014 Asia Pacific League of Associations for Rheumatology and Wiley Publishing Asia Pty Ltd.

    KEYWORDS:
    SLE drug treatment; clinical aspects; systemic lupus erythematous
  17. Shaharir SS, Ghafor AH, Said MS, Kong NC
    Lupus, 2014 Apr;23(4):436-42.
    PMID: 24399814 DOI: 10.1177/0961203313518624
    INTRODUCTION: Renal involvement is the most common serious complication in patients with systemic lupus erythematosus (SLE).
    OBJECTIVE: The objective of this article is to investigate and determine the associated factors of disease damage among lupus nephritis (LN) patients.
    METHODS: Medical records of LN patients who attended regular follow-up for at least one year in the Nephrology/SLE Clinic, Universiti Kebangsaan Malaysia Medical Centre (UKMMC), were reviewed. Their Systemic Lupus International Collaborating Clinics/American College of Rheumatology (SLICC/ACR) Damage Index scores were noted. Univariate analysis and multivariable regression analysis were performed to determine the independent factors of disease damage in LN.
    RESULTS: A total of 150 patients were included and their follow-up duration ranged from one to 20 years. Sixty (40%) LN patients had disease damage (SDI ≥1). In the univariate analysis, it was associated with age, longer disease duration, antiphospholipid syndrome (APS), higher maximum daily oral prednisolone dose (mg/day), lower mean C3 and C4, higher chronicity index and global sclerosis on renal biopsies (p < 0.05). Patients who received early (≤3 months after the SLE diagnosis) hydroxychloroquine (HCQ), optimum HCQ dose at 6.5 mg/kg/day and achieved early complete remission (CR) were less likely to have disease damage (p < 0.05). After adjustment for age, gender, disease duration and severity, multivariable regression analysis revealed that a higher maximum daily dose of oral prednisolone was independently associated with disease damage while early HCQ and CR were associated with lower disease damage.
    CONCLUSION: Higher maximum daily prednisolone dose predicted disease damage whereas treatment with early HCQ and early CR had a protective role against disease damage.
    KEYWORDS: Antiphospholipid syndrome; lupus nephritis; systemic lupus erythematosus

    Study site: Nephrology/SLE Clinic, Pusat Perubatan Universiti Kebangsaan Malaysia (PPUKM)
  18. Sazliyana S, Mohd Shahrir MS, Kong NC, Tan HJ, Hamidon BB, Azmi MT
    Int J Rheum Dis, 2011 Aug;14(3):267-75.
    PMID: 21816023 DOI: 10.1111/j.1756-185X.2011.01638.x
    AIM: The objectives of this study were to investigate the frequency of thickened carotid intima media thickness (CIMT) and atherosclerosis among lupus nephritis (LN) patients and to study their associated risk factors.
    METHOD: In this cross-sectional study, carotid ultrasonography was performed on consecutive LN patients to determine CIMT and presence of carotid plaques. CIMT was considered to be abnormally thickened if it was more than the 75th percentile matched for age and sex from the 'Carotid Atherosclerosis Progression Study'. The association between thickened CIMT with traditional cardiovascular risk factors and lupus characteristics were examined. A total of 83 patients with the mean age of 33.6 ± 10 years were recruited.
    RESULTS: Fourteen patients (16.9%) had thickened CIMT and three (3.6%) had carotid plaques. On univariate analysis, traditional risk factors significantly associated with thickened CIMT (P < 0.05) were patient's current age, diabetes mellitus and waist circumference. Meanwhile, a lower serum C4 levels and higher serum C-reactive protein levels were the lupus-specific factors associated with thickened CIMT (P < 0.05, P < 0.05 and P < 0.01, respectively). In logistic regression analysis, the independent predictors of thickened CIMT were age of diagnosis, lower serum C4 levels and waist circumference (P < 0.05).
    CONCLUSION: More lupus specific factors were independently associated with thickened CIMT, suggesting that a multi-targeted approach of treatment addressing both the lupus and traditional cardiovascular risks are very important. Larger prospective studies of these special risk factors are indicated.
  19. Nadira U, Cader RA, Kong NC, Mohd R, Gafor HA
    Am J Case Rep, 2012;13:160-2.
    PMID: 23569517 DOI: 10.12659/AJCR.883248
    BACKGROUND: Malignancies are more common in patients with systemic lupus erythematosus (SLE) than the general population. SLE patients are recognized to have higher prolactin levels. However, there are very few reported cases of SLE with pituitary adenomas.
    CASE REPORT: We report the second case of a pituitary adenoma in a patient with underlying SLE. A 51 year old lady presented with blurred vision and magnetic resonance imaging of the brain demonstrated a pituitary macroadenoma with mildly elevated serum prolactin levels. The diagnosis of a non functioning pituitary macroadenoma was confirmed histologically. The diagnosis of SLE was made on the basis of thrombocytopenia, antinuclear antibodies, anti double stranded DNA antibodies and lupus nephritis (confirmed on renal biopsy). The patient initially received medical therapy with carbegoline, followed by transsphenoidal neurosurgery for the pituitary macroadenoma. SLE with lupus nephritis was treated with steroids and low dose intravenous cyclophosphamide.
    CONCLUSIONS: Hyperprolactinaemia is prevalent in twenty to thirty percent of SLE patients but it is rarely due to a prolactinoma. The source of excessive circulating prolactin in SLE patients has not been fully determined.
    KEYWORDS: pituitary macroadenoma; prolactin; systemic lupus erythematosus
  20. Petrick P, Kong NC, Nordiah AJ, Cheong IK, Tamil MA
    Med J Malaysia, 2007 Oct;62(4):329-34.
    PMID: 18551939 MyJurnal
    The clinical outcome of bacteraemic patients is influenced by many factors. It is vital to know one's own local hospital epidemiological data so as to provide optimal care to the affected patients. This was a prospective, observational study carried out in the said patient population over a period of four months in the year 2005. One hundred and ninety one patients presented with bacteraemia over the study period. Fifty-two (27%) of the patients died. Mechanical ventilation, inappropriate empirical antibiotic usage, Chinese ethnicity and low serum albumin levels independently affected prognosis. These factors should alert physicians to those patients who require more intensive monitoring and care.
    KEY WORDS:
    Bacteraemia, Blood Culture Positive, Outcome, Risk factors, Kuala Lumpur, Malaysia
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