Displaying publications 1 - 20 of 44 in total

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  1. Nguyen TH, Mat Daud ZA, Abd Talib R, Mohd R, Poh BK
    Transplant Proc, 2023 Nov;55(9):2176-2182.
    PMID: 37743189 DOI: 10.1016/j.transproceed.2023.08.008
    BACKGROUND: Although metabolic syndrome (MetS) is a significant risk factor, and dietary intake may affect the quality of life (QoL) of kidney transplant recipients (KTRs), the association between them are unclear. This study identified MetS and nutritional factors associated with the QoL of KTRs.

    METHODS: This study reports baseline data from a longitudinal study that was conducted at a hospital in Vietnam. KTRs aged ≥18 years and >3 months post-transplantation were recruited. Assessments included sociodemographic and blood biomarkers. Dietary intake was estimated from 24-hour recalls. A Short Form-36 Health Survey, comprising physical (PCS) and mental component summaries (MCS), was administered to assess QoL. Multivariate linear regression models were performed.

    RESULTS: The study included 106 patients (79 men) with a mean age of 43.2 years (± 11.9). Mean duration after kidney transplantation was 28.5 months (± 14.9). Patients with MetS had 6.43 lower PCS score (P < .05) and 3.20 lower MCS score (P < .05) than their counterparts without MetS. Calcium intake (β = -0.01; 95% CI, -0.03 to 0.00) and inadequate protein (β = -14.8; 95% CI, -23 to -6.65) were negatively associated with PCS score. MCS score was negatively associated with calcium intake (β = -0.02; 95% CI, -0.04 to -0.01) and inadequate protein intake (β = -15.1; 95% CI, -24.3 to -5.86), and positively associated with fat intake (β = 0.43, 95% CI, 0.02-0.85).

    CONCLUSIONS: MetS and poor dietary intake are independently associated with the QoL of KTRs. Nutritional intervention plans developed specifically for the recipients will improve dietary intake, reduce the incidence of MetS, and help enhance QoL.

  2. Jalalonmuhali M, Ng KP, Lee YW, Gan CC, Hing Wong A, Wan Md Adnan WAH, et al.
    Transplant Proc, 2022 Feb 15.
    PMID: 35181166 DOI: 10.1016/j.transproceed.2022.01.004
    BACKGROUND: Immunosuppressive therapy is the backbone of kidney transplantation in preventing acute rejection. T-cell depletion after doses of thymoglobulin is dose-dependent, as are their side effects. At the same time, basiliximab and other maintenance immunosuppressive drugs act at different signals on T lymphocytes. Therefore, studying the pattern of lymphocyte subset depletion depending on the induction regime given at transplantation could be an added tool in managing post-transplant recipients.

    METHODOLOGY: This prospective observational study recruited kidney transplant recipients from August 2019 through April 2021 at the University of Malaya Medical Centre. Blood tests for lymphocyte subsets were taken at pre-transplant, 1 week, 1 month, 3 months, and 6 months post-transplantation. At transplantation, recipients received either basiliximab, low-dose thymoglobulin (cumulative dose: 1.5 mg/kg), or standard-dose thymoglobulin (cumulative dose: 5 mg/kg).

    RESULTS: A total of 39 patients were recruited: 38.5% received basiliximab (15 of 39), 15.4% received low-dose thymoglobulin (6 of 39), and 46.2% received standard-dose thymoglobulin (18 of 39). Absolute lymphocyte counts 1 week post-transplantation were 1.5 ± 0.84 × 109/L for basiliximab, 0.7 ± 0.57 × 109/L for low-dose thymoglobulin, and 0.1 ± 0.08 × 109/L for standard-dose thymoglobulin (P < .001). The CD4+ and CD8+ counts were severely depleted in the standard-dose thymoglobulin group, with a statistically significant differenceup to 6 months post-transplantation. In the low-dose thymoglobulin group, the CD4+ and CD8+ counts were depleted at 1 week post-transplantation and recovered at 1 month post-transplantation. There was no difference in allograft function and incidence of allograft rejection across groups.

    CONCLUSIONS: The effects on lymphocyte counts, CD4+ and CD8+, vary depending on the type and dose of induction immunosuppression. This could be a guiding tool in managing immunosuppression post-transplantation depending on the patient's immunologic risk.

  3. Goh ET, Gan CC, Lim SK, Wong CM, Lee YW, Jalalonmuhali M
    Transplant Proc, 2022 Feb 10.
    PMID: 35153058 DOI: 10.1016/j.transproceed.2022.01.006
    The short- and long-term outcome of donations from living donors of kidneys (LKDs) remains controversial. Information regarding metabolic changes after donation in Malaysia remains limited despite Malaysia having the highest record prevalence of diabetes, obesity, and hypertension in Asia. There were 159 LKDs in our center from 2010 to 2020. We analyzed pre and post donation clinical data and laboratory results from 140 LKDs, retrospectively, from electronic medical records and looked for any metabolic changes. Among these 140 LKDs, 99 were women (70.7%), with a mean age of 47.23 ± 11.67 before donation. The median follow-up was 4 years (range, 2-6 years). Median body mass index increased from 24.35 kg/m2 (range, 22.11-26.93) to 25.56 kg/m2 (range, 22.78-28.57; Z=-3.934, P = .000) after donation. Prevalence of obesity increased from 24.18% to 30.77%. Only 2.8% of LKDs developed proteinuria postnephrectomy (P = .250). Serum creatinine increased from 60 mmol/L (range, 52-74) to 87 mmol/L (range, 74-108) 1 year after donation (P = .000), and the latest results decrease to 83 mmol/L (range, 73-101; P = .000). Systolic blood pressure increased from 127.83 ± 12.25 mm Hg to 131.30 ± 18.16 mm Hg, (t[97] = -2.012; P = .047); and prevalence of hypertension increased from 19.81% to 23.58% (P = .125), with 22.64% requiring treatment. We noted that 22.54% of the LKDs had dyslipidemia before donation, a number that increased to 50% after donation (P = .000). LKDs with hyperuricemia increased significantly from 7.92% to 34.65%, with uric acid level increasing from 311.94 ± 78.51umol/L to 381.87 ± 86.96 umol/L (t[94] = -10.805; P = .000). Fasting blood glucose and glycated hemoglobin level recorded no significant changes after donation. Post donation kidney function of LKDs compensated well and stable in short term. We noted statistically significant increment of weight, post donation body mass index, systolic blood pressure, uric acid, and lipids. We suggest prospective studies with longer follow-up and more subjects for clinical correlation.
  4. Goh ET, Jalalonmuhali M, Ng KP, Wan Md Adnan AH, Hing Wong A, Cheng SF, et al.
    Transplant Proc, 2022 Feb 04.
    PMID: 35131101 DOI: 10.1016/j.transproceed.2021.12.039
    Living-kidney transplantation increases with years, however, the rate is comparatively low to support local needs. Marginal living donors like the elderly were used to increase the donor pool. We retrospectively evaluate the outcome of 25 elderly living kidney donors (eLKDs) who were ≥60 years old at the time of donation in our center. Their medical history and laboratory results were analyzed retrospectively from e-medical records. There are 16 females (64.0%) with a median age of 63 (60.5-66.0). The mean follow-up duration was 4.36 ± 2.46 years. Their mean body mass index increased from 23.70 ± 3.07 kg/m2 to 24.21 ± 2.93 kg/m2 (t[14] = -2.176, P = .047) post donation. Systolic blood pressure (SBP) increased from 133.33 ± 11.65 mm Hg to 140.56 ± 17.78 mm Hg (t[17] = -2.124, P = .049). However, the prevalence of overweight and hypertension were not significant. Only 5.56% of the eLKDs developed proteinuria post nephrectomy (P =1.000). Serum creatinine increased from 62.33 ± 14.39 mmol/L to 104.63 ± 28.53 mmol/L post 1-month donation (t[23] = -9.720, P = .000) and decreased to 99.67 ± 22.39 mmol/L post 1-year donation (t[17] = -8.415, P = .006), and latest results were 94.28 ± 20.74mmol/L (t[17] = -6.630, P = .033). Fasting blood glucose and HbA1c level recorded no significant changes post donation. We noted that 47.62% of the eLKDs had dyslipidemia pre donation, which increased to 76.20% post donation (P = .031). eLKDs with hyperuricemia increased significantly from 5.88% to 52.94%; with uric acid level from 306.12 ± 68.67 umol/L to 412.24 ± 74.14 umol/L (t[16] = -7.726, P = .000). None of the eLKDs were diagnosed with metabolic syndrome pre and post kidney donation. Postdonation kidney function of the eLKDs compensated well and were stable in the short term. We noted statistically significant increments of weight, body mass index, SBP, uric acid, and lipid levels, which did not translate to clinical significance post donation. Elderly living-kidney donation can be done safely with close monitoring post donation.
  5. Lau WP, Ng KP, Ganapathy SS, Tah PC, Ismail R, Jalalonmuhali M, et al.
    Transplant Proc, 2022 Feb 03.
    PMID: 35125235 DOI: 10.1016/j.transproceed.2021.12.019
    BACKGROUND: Proteinuria and metabolic acidosis adversely affect long term renal allograft outcome and are highly prevalent in reported studies. The role of dietary intake in influencing proteinuria and metabolic acidosis remained uncertain. This study aims to determine the prevalence rate of proteinuria and metabolic acidosis among kidney transplant recipients (KTRs) and to study their relationship with dietary intake.

    METHODS: We performed a cross-sectional study on KTRs with functioning renal allograft and at least 3 months post transplant. Dietary protein, salt, and dietary acid load were estimated using 24-hour urine collection. Demographic characteristics, concomitant medications, medical history, and laboratory results were obtained from electronic medical records.

    RESULTS: A total of 204 KTRs were recruited with median age of 48 years (interquartile range [IQR], 18 years); male to female ratio was 61:39. A total of 79.9% (n = 163) were living related kidney transplants. The median duration after transplant was 71 months (IQR, 131 months), and median eGFR was 65 mL/min/1.73 m2 (IQR, 25 mL/min/1.73 m2). The prevalence rates of proteinuria (defined as ≥ 0.5 g/d) and metabolic acidosis (defined as at least 2 readings of serum bicarbonate ≤ 22 mmol/L in the past 6 months) were 17.7 % and 6.2%, respectively. High dietary protein of > 1.2 g/kg ideal body weight (adjusted odds ratio, 3.13; 95% CI, 1.35-7.28; P = .008) was significantly associated with proteinuria. Dietary protein, salt, and acid load did not correlate with chronic metabolic acidosis.

    CONCLUSIONS: The prevalence rate of proteinuria is consistent with published literature, but metabolic acidosis rate is extremely low in our cohort. High protein intake (> 1.2 g/kg ideal body weight) is a risk factor of proteinuria and may have negative impact on KTR outcome.

  6. Thye CK, Lee YW, Jalalonmuhali M, Lim SK, Ng KP
    Transplant Proc, 2022 Feb 02.
    PMID: 35123793 DOI: 10.1016/j.transproceed.2021.12.023
    BACKGROUND: Evaluation of donor renal function as glomerular filtration rate (GFR) is a crucial part of pretransplant workup. Most guidelines recommend measured GFR (mGFR) using exogenous markers with creatinine clearance (CrCl) as an alternative. However, exogenous markers are difficult to obtain and perform, and CrCl may overestimate GFR.

    OBJECTIVE: We explore the use of CrCl and combined urea and creatinine clearance as an alternative for GFR assessment.

    METHODS: A retrospective study involving 81 kidney donors from 2007 to 2020, with mGFR collected by chromium 51-labeled ethylenediaminetetraacetic acid (51Cr-EDTA) and CrCl and combined urea and creatinine clearance. We analyzed the performance of CrCl and combined urea and creatinine clearance against 51Cr-EDTA. Adequacy of urine volume was taken into consideration.

    RESULTS: A total of 81 candidates with a mean age of 44.80 ± 10.77 years were enrolled. Mean mGFR from 51Cr-EDTA was 123.66 ± 26.91 mL/min/1.73 m2, and combined urea and creatinine clearance and CrCl were 122.13 ± 47.07 and 133.40 ± 36.32 mL/min/1.73 m2, respectively. CrCl overestimated 51Cr-EDTA. Though combined urea and creatinine clearance had minimal bias, it had a lower correlation coefficient (0.25 vs 0.43), lower precision (49.51 vs 38.10), and slightly lower accuracy within 30% of 51Cr-EDTA (74.07% vs 76.54%).

    CONCLUSIONS: Combined urea and creatinine clearance did not improve the performance of CrCl. Nevertheless, it can potentially be used as first-line GFR assessment, followed by mGFR in selected donors, to ascertain threshold of safe kidney donation. A stringent urine collection method is essential to ensure accurate measurement.

  7. Ng YM, Lim YS, Ee LW, Fong VK, Low CL, Yee SY, et al.
    Transplant Proc, 2022 Jan 29.
    PMID: 35105465 DOI: 10.1016/j.transproceed.2022.01.002
    BACKGROUND: The Malaysian Kidney Allocation System implemented in 2020 includes only kidney transplant candidates with estimated posttransplant survival (EPTS) score of ≤20%, in replacement of Malaysian Organs Sharing System, which was based solely on dialysis vintage. We aim to compare the clinical outcomes of deceased-donor kidney transplant recipients (DDKTRs) with EPTS ≤20% to those with EPTS >20%.

    METHODS: All DDKTRs between January 1, 2015, and December 29, 2020, were included and categorized into 2 groups: EPTS ≤20% and EPTS >20%. Cox regression was performed to evaluate the association of EPTS score and patient survival. The rate of postoperative complications, graft failure and patient survival were compared between 2 groups. Data were analyzed with SPSS v26 and R v4.0.4. The study complies with the Helsinki Congress and the Istanbul Declaration.

    RESULTS: We included 159 DDKTRs, with a median follow-up of 25 months (range, 10-60 months). The mean age of those with EPTS ≤20% was 32.2 ± 3.4 years and those with EPTS >20% was 46.0 ± 6.7 years, and the median EPTS score were 16% (range, 12%-18%) and 38% (range, 27%-56.5%), respectively. EPTS score was associated with patient survival (hazard ratio, 1.031; 95% CI 1.010-1.052; P = .003), and the cutoff points of 30% and above were associated with worse survival. It showed good discrimination (C-index, 0.729; 95% CI 0.579-0.878; P = .003) and the optimal cutoff value was 38% (65.5% sensitivity, 68.8% specificity, 17.8% positive predictive value, and 95.8% negative predictive value). Both groups had similar rate of surgical complications (P = .191), graft failure (P = .503), and patient survival (P = .654), but those with EPTS >20% had higher incidence of urinary tract infection (9.3% vs 27.6%, P = .016).

    CONCLUSIONS: There was no difference in clinical outcomes using an EPTS cutoff point of 20% but worse patient survival if higher cutoff point was used.

  8. Wan Muhd Shukeri WF, Mazlan MZ, Kamaruzaman L, Budiman M, Mohamad Yusof A, Ramly NF, et al.
    Transplant Proc, 2022 Jan 28.
    PMID: 35094885 DOI: 10.1016/j.transproceed.2021.12.035
    BACKGROUND: The attitudes of the health care workers (HCWs) are essential in influencing organ donation rate. The aim of this study was to assess the effects of an educational intervention on attitudes toward organ donation among HCWs.

    METHODS: A questionnaire-based interventional study was conducted with 458 HCW from 5 hospitals in Malaysia. A 26-item self-administered questionnaire was distributed online as a preintervention test. Respondents then went through website-based educational materials followed by a post-intervention questionnaire.

    RESULTS: A total of 345 (75.3%) respondents completed the tests. Their attitude toward organ donation was positive preintervention. After the intervention, respondents expressed an increase willingness to donate their own organs (P = .008) and their relatives' organs (P < .001) after death; were more willing to adopt organ donation as part of end-of-life care (P =.002); were more comfortable talking to relatives about organ donation (P =.001); and expressed an increase consideration to execute the action at any time (P =.001). There was increased willingness to admit to the intensive care unit for facilitating organ donation (P =.007); to employ the same resources to maintain a potential brain-dead donor (P < .001); and to support organ donation in case they or their relatives were diagnosed with end-stage organ failure (P =.008). However, there was an increase in negative attitudes regarding the association between organ donation with health care failure (P =.004) and with pain (P =.003). Positive attitude scores were higher after the intervention (P < .001).

    CONCLUSION: An educational website-based intervention was able to improve the attitudes of HCWs toward organ donation.

  9. Boey CY, Yee SY, Amir Hassan SZ, Yahya R, Hashim H
    Transplant Proc, 2022 Jan 24.
    PMID: 35086676 DOI: 10.1016/j.transproceed.2021.12.016
    INTRODUCTION: Accurate assessment of renal graft function in the early post-transplant period is crucial, as it influences clinical management and graft prognostication. However, there are limitations in current available modalities. MAG3 scintigraphy could contribute vital information on graft function.

    OBJECTIVES: This study aimed to determine the predictive value of parameters derived from MAG3 performed within 72 hours post transplant in detecting graft function. Delayed graft function (DGF), which is defined as dialysis requirement within the first week post transplant, is chosen as a surrogate measure of graft function.

    METHODOLOGY: All renal transplant recipients who underwent MAG3 within 72 hours post transplant from 2017 to 2019 were enrolled. Three MAG3 parameters, renogram grade, tubular injury severity score, and R20:3, were evaluated.

    RESULTS: A total of 117 patients were enrolled. The overall incidence of DGF was 16.2% with a significantly higher incidence amongst cadaveric graft recipients (53.6%) compared with living graft recipients (4.5%). Renogram grade ≥2, tubular injury severity score ≥4, and R20:3 > 1.31 significantly predicted DGF, P < .05 with high area under the curve for R20:3 of 0.97. Grafts with parameters above the cutoffs also showed significantly worse GFR at 1- and 3-months post-transplant. On multivariate analysis, prolonged cold ischemia time was associated with a higher risk of DGF, odds ratio 1.005 (95% confidence interval 1.003-1.007), P < .05.

    CONCLUSION: Baseline MAG3 accurately depicts early graft function and was also predictive of GFR at 1- and 3- months post-transplant. These baseline MAG3 scans could be particularly useful amongst deceased donor graft recipients owing to the higher risk of poor graft function.

  10. Tan MH, Wan Ahmad Kamil WMR, Cheng MC, Yee SY, Abdul Wahab MZ, Yahya R, et al.
    Transplant Proc, 2021 Dec 25.
    PMID: 34963514 DOI: 10.1016/j.transproceed.2021.11.020
    Promising outcomes of kidney transplantation following hematopoeitic stem cell transplantation has been reported. Data from some centers have demonstrated stable graft function without long term immunosuppression. We present our experience with the first successful case in Malaysia. This is a 21-year-old man who had acute myeloid leukemia, received stem cell transplant from his younger brother 8 years prior, underwent kidney transplantation from the same donor, and had an excellent 1-year graft function post-transplant. As the post-transplant genetic analysis revealed full chimerism, his immunosuppression regimen can be tapered to minimal doses safely. The concept of immunotolerance is now widely studied and could potentially be the curative strategy for patients who develop end stage kidney disease after hematopoeitic stem cell transplantation.
  11. Jo HS, Khan JF, Han JH, Yu YD, Kim DS
    Transplant Proc, 2021 Dec;53(10):3016-3021.
    PMID: 34740450 DOI: 10.1016/j.transproceed.2021.09.038
    BACKGROUND: Hepatitis B immunoglobulin (HBIG) and oral nucleoside/nucleotide analogs have been the mainstay of hepatitis B virus (HBV) prophylaxis after liver transplantation. However, long-term HBIG administration could have disadvantages, such as an increase in medical costs and the development of mutant HBV strains. This study aimed to investigate the safety and efficacy of HBV vaccination after the withdrawal of HBIG after liver transplantation.

    METHODS: This prospective open-label single-arm observational clinical trial enrolled 41 patients who underwent liver transplantation between 2010 and 2016 because of a condition related to chronic HBV infection. At the time of enrollment, all patients had taken entecavir and discontinued HBIG administration. When hepatitis B surface antibody titer was undetectable after the withdrawal of HBIG, a recombinant HBV vaccine was injected intramuscularly at month 0, 1, and 6.

    RESULTS: After excluding 5 patients who dropped out and 2 patients who had a persistent hepatitis B surface antibody titer, 9 (26.5%) of 34 patients had a positive vaccination response. The median hepatitis B surface antibody titer at seroconversion was 86 (12-1000) IU/L, and those at the end of follow-up were 216 (30-1000) IU/L. No patients experienced HBV recurrence during the study period. Sex (female, odds ratio 32.91 [1.83-592.54], P = .018) and the dosing interval of HBIG before withdrawal (≥90 days, 16.21 [1.21-217.31], P = .035) were independent contributing factors for positive response to the vaccination.

    CONCLUSION: HBV vaccination still deserves consideration as active immunoprophylaxis after liver transplantation because it could provide added immunity to nucleoside/nucleotide analogs monotherapy with excellent cost-effectiveness.

  12. Gan CC, Jalalonmuhali M, Nordin NZ, Abdul Wahab MZ, Yahya R, Ng KP, et al.
    Transplant Proc, 2021 Apr;53(3):856-864.
    PMID: 33487455 DOI: 10.1016/j.transproceed.2020.10.038
    Malaysia has a low deceased-donor donation rate and has not embarked on a paired kidney exchange program; therefore, ABO-incompatible and HLA-incompatible transplantation remain the main contributor to the sustainability of the national kidney transplantation (KT) program. There were 26 cases of ABO-incompatible KTs performed from 2011 to 2018 in 3 major transplant centers, namely, Hospital Kuala Lumpur, University Malaya Medical Centre, and Prince Court Medical Centre. We collected perioperative and follow-up data through June 2019. The desensitization protocol varies and is center specific: the localized Japanese protocol and Swedish protocol with a target anti-A/B isoagglutinin titer of 16 or 32 on the day of transplant. The induction and tacrolimus-based maintenance protocol was nearly identical. The median follow-up time was 62.3 months (interquartile range, 37.0-79.7). Fifteen subjects had the highest predesensitization anti-A/B titer of ≥32 (57.7%). The acute cellular rejection and antibody-mediated rejection incidence were 12.5% (3 cases) and 8.3% (2 cases), respectively. Patient, graft, and death-censored graft survival rates were 96.2%, 92.3%, and 96.0%, respectively, 1 year post-living-donor KT (LDKT) and 96.2%, 87.2%, and 90.7%, respectively, 5 years post-LDKT. Our experience shows that ABO-incompatible LDKT using a suitable desensitization technique could be a safe and feasible choice for LDKT even with varied desensitization regimens for recipients with relatively high baseline isoagglutinin titers.
  13. Jalalonmuhali M, Ng KP, Mohd Shariff NH, Lee YW, Wong AH, Gan CC, et al.
    Transplant Proc, 2020 05 21;52(6):1718-1722.
    PMID: 32448671 DOI: 10.1016/j.transproceed.2020.02.140
    The shortage of deceased donors led to an increase of living related renal transplant performed in the presence of donor-specific antibodies (DSAs) or ABO incompatibilities. There are various desensitization protocols that have been proposed. Here, we describe the outcome of these sensitized patients. This is a prospective cohort study recruiting all kidney transplant recipients from August 2016 until June 2018. Deceased donations, ABO incompatible patients, and sensitized patients who were not prescribed on our desensitization protocol were excluded. Recipients were screened for the presence of HLA-antibodies 1 month before transplant. Those with positive DSA will undergo flow cytometry (risk stratification). We are using a protocol that consisted of intravenous rituximab 200 mg (day -14), intravenous antithymocyte globulin 5mg/kg (day 0-4), plasma exchange post transplant for patients with mean fluorescent intensity (MFI) < 3000, and negative flow cytometry. Those patients with MFI ≥ 3000 or positive flow cytometry need extra cycles pretransplant. A total of 40 patients were recruited, and 20 were sensitized patients. Among the sensitized group 4 of 20 had flow cytometry crossmatch positive, while all had preformed HLA-DSA. A total of 8 of 20 had class I HLA-DSA, 11 of 20 had class II HLA-DSA, and 1of 20 was positive for both class I and II HLA-DSA. Mean immunodominant MFI was 2133.4 (standard deviation [SD], 4451.24) and 1383.7 (SD, 2979.02) for class I and class II, respectively. At 1 year, mean serum creatinine was 108.90 (SD, 25.95) and 118.42 (SD, 31.68) in sensitized and unsensitized patients, respectively. One of 20 unsensitized patients had Banff 1B rejection at 3 months, and there was no significant rejection in sensitized patients at 6 months and 1 year. There was no difference in the occurrence of de novo HLA-DSA between the groups. Desensitization protocols may help to overcome incompatibility barriers in living donor renal transplant. The combination of low-dose rituximab, antithymocyte globulin, and judicious use of plasma exchange has worked well for our cohort.
  14. Jalalonmuhali M, Ng KP, Ong CS, Lee YW, Wan Md Adnan WAH, Lim SK
    Transplant Proc, 2020 05 21;52(6):1709-1714.
    PMID: 32448669 DOI: 10.1016/j.transproceed.2020.02.139
    The aim of induction therapy in the management of kidney transplant is to reduce the incidence of acute rejection and delayed graft function after kidney transplant. The agent for induction therapy differs depending on the recipient risks. The regimen can be either polyclonal (rabbit antithymocyte globulin [rATG]) or monoclonal antibody (basiliximab). Basiliximab is commonly used in patients with low immunologic risk. However, to date we know that the use of rATG on T cell depletion is dose dependent and more potent antirejection therapy. Therefore, we would like to look at 1-year graft function of very low-dose rATG in low immunologic risk recipients. All low immunologic risk patients who received low-dose rATG (0.5 mg/kg of body weight daily) during transplant (day 0) and on days 1 and 2 were recruited. Their renal function, HLA donor-specific antibodies, lymphocyte counts, protocol biopsy results, and cytomegalovirus (CMV) polymerase chain reaction were monitored as per clinical practice. All 10 patients had immediate graft function. Low-dose rATG caused lymphocyte counts to deplete immediately on day 0, and the effect lasted about 1 month post-transplant. All the patients had stable graft function without any significance episode of rejection. Only one patient had de novo HLA-DQ antibody. It is good to know that without prophylaxis antiviral in CMV+ donor to CMV+ recipient, the incidence of CMV viremia is considerably low in our cohort. Very low-dose rATG is an effective induction immunosuppression in low immunologic risk patients with acceptable infection risk.
  15. Lim KJ, Cheng TTJ, Jeffree MS, Hayati F, Cheah PK, Nee KO, et al.
    Transplant Proc, 2020 Apr;52(3):680-686.
    PMID: 32146022 DOI: 10.1016/j.transproceed.2020.01.007
    INTRODUCTION: Worldwide, the gap between organ supply and demand has widened over the years. Malaysia has one of the lowest deceased organ donation rates. Success rate of organ or tissue procurement depends on not only the approach rate by health care providers but also the awareness among the public, whereby it can be a platform for family initiation of organ donation. The purpose of this study is to assess the knowledge of and determine the factors influencing attitude toward organ and tissue donation among patients in a primary clinic.

    METHODS: A cross-sectional analytical study was carried out. Self-administered questionnaires were given to 400 patients who registered at an outpatient clinic in April 2018. Convenience sampling was applied.

    RESULTS: Monthly income, education level, occupation, and knowledge level are significantly associated with attitude of the respondents toward organ and tissue donation. Occupation influenced attitude toward organ donation. Knowledge of organ donation and brain death both significantly affected attitude toward organ donation.

    CONCLUSION: The greater the knowledge of organ donation and brain death, the more positive impression or attitude toward organ donation. Education level and income are the main predictors that influence attitude toward organ donation. Hence, it is important for public health units to promote and deliver public education on organ donation, change public misconceptions, and work parallel with hospitals to increase organ donation rates in Sabah.

  16. Choong CL, Wong HS, Lee FY, Lee CK, Kho JV, Lai YX, et al.
    Transplant Proc, 2018 Oct;50(8):2515-2520.
    PMID: 30316389 DOI: 10.1016/j.transproceed.2018.04.024
    BACKGROUND: Inhibition of calcineurin inhibitor (CNI) metabolism with diltiazem reduces the dose of tacrolimus required to achieve its therapeutic blood concentration in kidney transplant recipients (KTRs). This cost-savings maneuver is practiced in several countries, including Malaysia, but the actual impacts of diltiazem on tacrolimus blood concentration, dose-response relationship, cost-savings, and safety aspects are unknown.

    METHODS: This retrospective study was performed on all KTRs ≥18 years of age at our center from January 1, 2006 to December 31, 2015, who were prescribed diltiazem as tacrolimus-sparing agent. Blood tacrolimus trough level (TacC0) and other relevant clinical data for 70 eligible KTRs were reviewed.

    RESULTS: The dose of 1 mg tacrolimus resulted in a median TacC0 of 0.83 ± 0.52 ng/mL. With the introduction of a 90-mg/d dose diltiazem, there was a significant TacC0 increase to 1.39 ± 1.31 ng/mL/mg tacrolimus (P < .01). A further 90-mg increase in diltiazem to 180 mg/d resulted in a further increase of TacC0 to 1.66 ± 2.58 ng/mL/mg tacrolimus (P = .01). After this, despite a progressive increment of every 90-mg/d dose diltiazem to 270 mg/d and 360 mg/d, there was no further increment in TacC0 (1.44 ± 1.15 ng/mL/mg tacrolimus and 1.24 ± 0.94 ng/mL/mg tacrolimus, respectively [P < .01]). Addition of 180 mg/d diltiazem reduced the required tacrolimus dose to 4 mg/d, resulting in a cost-savings of USD 2045.92 per year (per patient) at our center. Adverse effects reported within 3 months of diltiazem introduction were bradycardia (1.4%) and postural hypotension (1.4%), which resolved after diltiazem dose reduction.

    CONCLUSION: Coadministration of tacrolimus and diltiazem in KTRs appeared to be safe and resulted in a TacC0 increment until reaching a 180-mg/d total diltiazem dose, at which point it began to decrease. This approach will result in a marked savings in immunosuppression costs among KTRs in Malaysia.

  17. Mac Guad R, Zaharan NL, Chik Z, Mohamed Z, Peng NK, Adnan WA
    Transplant Proc, 2016 Jan-Feb;48(1):81-7.
    PMID: 26915847 DOI: 10.1016/j.transproceed.2016.01.001
    BACKGROUND: The aim of this study was to compare the within-patient variability trough levels (Co), dose-adjusted Co, and dose requirements of Prograf and Advograf with CYP3A5 polymorphisms in Malaysia renal transplant recipients.
    METHODS: Stable post-renal transplantation patients switched from Prograf to Advograf were retrospectively identified from University Malaya Medical Centre (n = 28). Co and concomitant tacrolimus dose 6 months preconversion and postconversion were examined. CYP3A5 was genotyped using reverse transcriptase polymerase chain reaction. Wilcoxon signed rank test and Mann-Whitney U test were used to compare Co and dose between formulations and according to genotypes.
    RESULTS: There was a significant difference in the whole-blood tacrolimus Co between the 2 groups (6.16 ± 1.74 ng/mL vs 4.90 ± 1.06 ng/mL; P = .0001). The mean daily maintenance dose of Prograf was 3.9 ± 2.0 mg/kg (0.06 mg/kg/d), which was reduced to 3.3 ± 1.7 mg/d (0.04 mg/kg/d) with Advograf (P = .01). The mean maintenance dose of tacrolimus required for those with CYP3A5*1/*1 (high-expressive) was significantly higher than those with CYP3A5*1/*3 (intermediate-expressive) and CYP3A5*3/*3 (low-expressive) (P < .01) for both formulations. Comparing those with CYP3A5*1/*1, the average dose-adjusted Co was significantly higher in patients with CYP3A5*3/*3 with Advograf (P < .05).
    CONCLUSIONS: The requirement for daily maintenance dose was higher in those with CYP3A5*1/*1 variants in both tacrolimus formulations in the Malaysian patients. Furthermore, those with CYP3A5*3/*3 demonstrated significantly higher dose-adjusted Co with Advograf.
  18. Wong LP
    Transplant Proc, 2010 Jun;42(5):1439-44.
    PMID: 20620450 DOI: 10.1016/j.transproceed.2009.11.053
    BACKGROUND: In-depth understanding of cultural and religious factors limiting organ donation of three ethnic populations (Malay, Chinese, and Indian) in Southeast Asia is lacking. Identification of factors limiting organ donation among these three ethnic groups will provide insights into culturally appropriate strategies to promote acceptance of organ donation in a multiethnic Asian community.
    METHODS: A total of 17 focus group discussions (105 participants) were conducted between September and December 2008. Participants were members of the general public aged 18 to 60 years, recruited through convenient sampling around the Klang Valley area of Malaysia.
    RESULTS: Although the majority had favorable attitudes toward deceased organ donation and transplantation, a diversity of myths and misinformation were unearthed from the discussions across the ethnic groups. These include perceived religious prohibition, cultural myths and misperceptions, fear of disfigurement, fear of surgery, distrust of the medical system, and family disapproval. Culture and religious beliefs played important prohibitive roles among those opposed to organ donations. There were distinctive ethnic differences in cultural and religious concerns regarding organ donation. Less-educated and rural groups appeared to have more misconceptions than the well-educated and the urban groups.
    CONCLUSION: Our findings may assist organ donation and transplantation organizations to reach diverse sociodemographic and ethnic communities with culture-specific information about organ donation. The involvement of community and religious leaders is critical in organ donation requests.
  19. Thye YL, Lim SK, Wong CM, Keng TC, Chong YB, Tan SY
    Transplant Proc, 2008 Sep;40(7):2435-6.
    PMID: 18790259 DOI: 10.1016/j.transproceed.2008.07.051
    Delayed graft function is a potentially challenging problem especially in cadaveric kidney transplant recipients. It adversely impacts long-term graft survival. It is rarely seen in living kidney transplants. Recovery of graft function usually occurs within a month. The chances of recovery of graft function diminish with further prolongation of delayed function. In fact, recovery of graft function after 3 months has rarely been described, we report herein recovery of graft function after 132 days of nonfunction in a living related kidney transplant.
  20. Al Otaibi T, Al Sagheir A, Ludwin D, Meyer R
    Transplant Proc, 2007 May;39(4):1276-7.
    PMID: 17524952
    Angiofollicular lymphoid hyperplasia (Castleman's disease) is a lymphoproliferative process thought to be mediated by overexpression of II interleukin-6. Castleman's disease has two variants: Castleman's disease has two variants: Hyaline vascular type and plasma cell variant (multicentric Castleman's disease). The hyaline vascular type tends to be localized, and the plasma cell variant shows more systematic signs and carriers a worse clinical prognosis. Castleman's disease is associated with B-cell lymphoma, Kaposi sarcoma, Human herpes virus 8 (HHV-8), and Epstein-Barr virus. Castleman's disease have been described thrice post kidney transplant. In this report, we document the course of a renal recipient who developed the plasma cell variant of Castleman's disease at 16 months after failure of his allograft and return to dialysis. He displayed clinical resolution of this complication after graft nephrectomy. To our knowledge, this is the first case where the disease manifestations disappeared after graft removal. Our patient experienced chronic renal allograft rejection which may have driven all the systematic manifestations of multicentric castleman's disease and possibly reactivated a latent HHV-8 infection. In this case immunohistochemical testing for HHV-8 was not available to prove a role for this agent.
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