Displaying publications 1 - 20 of 64 in total

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  1. Identification of a novel HLA-A*01 variant, HLA-A*01:211, in a Singaporean Malay bone marrow donor
    Kaur A, Cho L, Cereb N, Lin PY, Yang KL
    HLA, 2020 09;96(3):329-330.
    PMID: 32227684 DOI: 10.1111/tan.13884
    One nucleotide substitution in codon 73 of HLA-A*01:01:01:01 results in a novel allele, HLA-A*01:211.
    Matched MeSH terms: Tissue Donors*
  2. HLA-B*15:349:02, a novel variant of HLA-B*15, discovered in a Singaporean Malay bone marrow donor
    Cho L, Kaur A, Cereb N, Lin PY, Yang KL
    HLA, 2020 09;96(3):344-345.
    PMID: 32212215 DOI: 10.1111/tan.13879
    One nucleotide substitution in codon 112 of HLA-B*15:349:01 results in a novel allele, HLA-B*15:349:02.
    Matched MeSH terms: Tissue Donors
  3. Social and cultural aspects of organ donation in Asia
    Woo KT
    Ann Acad Med Singap, 1992 May;21(3):421-7.
    PMID: 1416796
    In Asian countries, it is more difficult to obtain cadaver kidneys for renal transplantation because of certain socio-cultural beliefs and customs. The issues affecting living related kidney donation are more social than cultural. This is due to the web of family pressures and personal conflicts for both donor and recipient surrounding the donation. Important misconceptions and fears are: fear of death, the belief that removal of organ violates sanctity of decreased, concern about being cut up after death, desire to be buried whole, dislike of idea of kidneys inside another person, wrong concept of brain death, and the idea of donation being against religious conviction. In Singapore, with the introduction of the Human Organ Transplant Act (HOTA) in 1988, the number of cadaveric transplants have increased, including those from the Medical Therapy Act (MTA). HOTA and education have played pivotal roles in bringing about an increased yield of cadaveric kidneys. With the availability of living unrelated donor (LUD) transplants in India, our living related donor (LRD) transplant programme has suffered, because patients would rather buy a kidney from overseas than get a relative to donate one. Patients are also going to China for overseas cadaveric transplants where the kidneys come from executed convicts. People in countries like Hong Kong, Japan and the Philippines share the same Asian tradition of not parting with their organs after death. Muslim countries like Malaysia require the deceased to have earlier pledged his kidneys for donation prior to death before they can be harvested for transplantation at death.
    Matched MeSH terms: Tissue Donors/psychology*
  4. Knowledge, attitudes, practices and behaviors regarding deceased organ donation and transplantation in Malaysia's multi-ethnic society: a baseline study
    Wong LP
    Clin Transplant, 2011 Jan-Feb;25(1):E22-31.
    PMID: 20718827 DOI: 10.1111/j.1399-0012.2010.01312.x
    Malaysia's organ and tissue donation rates are among the lowest in the world. The study aims to explore the knowledge, attitudes, practices and behaviors regarding deceased organ donation and transplantation in the diverse ethnic communities in the state of Selangor, Malaysia.
    Matched MeSH terms: Tissue Donors/psychology*
  5. Fulltext Information needs, preferred educational messages and channel of delivery, and opinion on strategies to promote organ donation: a multicultural perspective
    Wong LP
    Singapore Med J, 2010 Oct;51(10):790-5.
    PMID: 21103814
    INTRODUCTION:
    This study assessed the information needs, preferred educational messages and channels of delivery, as well as opinions on strategies to promote organ donation. It aimed to provide insight into a culturally sensitive public education campaign to encourage organ donation in diverse ethnic communities in Asia, namely the Malays, Chinese and Indians.

    METHODS:
    A total of 17 focus group discussions with 105 participants were conducted between September and December 2008. The participants were members of the general public aged 18 to 60 years, who were recruited through convenient sampling in the Klang Valley area of Malaysia.

    RESULTS:
    Across ethnic groups, there was a general concern about the mistreatment of the deceased's body in the organ procurement process. The Chinese and Indian participants wanted assurance that the body would be treated with respect and care. The Muslims wanted assurance that the handling of a Muslim's body would follow the rules and regulations of the Islamic faith. The most important information requested by the Muslim participants was whether cadaveric donation is permissible in Islam. A lack of national public education and promotion of organ donation was noted. All the three ethnic groups, especially the Malays, required community and religious leaders for support, encouragement and involvement, as sociocultural influences play a significant role in the willingness to donate organs.

    CONCLUSION:
    The pronounced ethnic differences in information needs suggest that culturally sensitive public educational messages are required. Organ donation and transplantation organisations should work closely with community and religious organisations to address the sociocultural barriers identified.
    Matched MeSH terms: Tissue Donors/education*
  6. Fulltext Knowledge and attitudes of healthcare professionals and the impact on willingness to donate organs: a tertiary hospital survey
    Oo WL, Ong JS, Fong JW, Hossain MM, Baskaran ND, Haron H, et al.
    Singapore Med J, 2019 Jul 22.
    PMID: 31328238 DOI: 10.11622/smedj.2019080
    INTRODUCTION: Healthcare professionals (HCPs) working in critical care areas play an important role in the organ donation (OD) process. We studied HCPs' own willingness to be organ donors and its association with sociodemographic factors as well as their knowledge and attitudes about OD and transplantation.

    METHODS: A cross-sectional survey of HCPs working in four critical care units in a major transplant centre in Malaysia was undertaken using a validated structured questionnaire. Responses were analysed using multivariable analysis with willingness to donate as the dependent variable.

    RESULTS: Of the 412 respondents (response rate 98.1%), the majority were nurses (60.4%), Malay (71.1%) and female (77.2%). Overall, 68.0% were willing to donate. The independent predictors of willingness to donate were profession (p < 0.001) and the Hindu religion (p = 0.001). Ethnicity (p = 0.003), religious belief (p < 0.001), knowledge (p = 0.016), belief in brain death (p = 0.018) and confidence in transplantation (p < 0.001) also independently correlated with willingness to donate, while attitudes to OD did not. Of those willing to donate, only 37.3% were carrying a donor card and only 63.1% had informed their family of their intention to donate.

    CONCLUSION: Although willingness to donate was higher in critical care HCPs than HCPs in general, significant knowledge gaps as well as certain beliefs and perceptions that could pose a barrier to OD were identified in this group. Measures to improve OD rates in Malaysia should include targeted educational programmes for HCPs working in critical care areas.
    Matched MeSH terms: Tissue Donors
  7. Fulltext trans-Di-chlorido-bis-(dimethyl sulfoxide-κO)bis-(4-fluoro-benzyl-κC(1))tin(IV): crystal structure and Hirshfeld surface analysis
    Amin NABM, Hussen RSD, Lee SM, Halcovitch NR, Jotani MM, Tiekink ERT
    Acta Crystallogr E Crystallogr Commun, 2017 May 01;73(Pt 5):667-672.
    PMID: 28529772 DOI: 10.1107/S2056989017005072
    The Sn(IV) atom in the title diorganotin compound, [Sn(C7H6F)2Cl2(C2H6OS)2], is located on a centre of inversion, resulting in the C2Cl2O2 donor set having an all-trans disposition of like atoms. The coordination geometry approximates an octa-hedron. The crystal features C-H⋯F, C-H⋯Cl and C-H⋯π inter-actions, giving rise to a three-dimensional network. The respective influences of the Cl⋯H/H⋯Cl and F⋯H/H⋯F contacts to the mol-ecular packing are clearly evident from the analysis of the Hirshfeld surface.
    Matched MeSH terms: Tissue Donors
  8. Fulltext 1-Butyl-1-chloro-3-methyl-3H-2,1λ(4)-benzoxa-tellurole: crystal structure and Hirshfeld analysis
    Zukerman-Schpector J, Cunha R, Omori ÁT, Sousa Madureira L, Tiekink ERT
    Acta Crystallogr E Crystallogr Commun, 2017 Apr 01;73(Pt 4):564-568.
    PMID: 28435722 DOI: 10.1107/S2056989017003887
    Two independent mol-ecules comprise the asymmetric unit in the title benzoxatellurole compound, C12H17ClOTe. The mol-ecules, with the same chirality at the methine C atom, are connected into a loosely associated dimer by Te⋯O inter-actions, leading to a {⋯Te-O}2 core. The resultant C2ClO2 donor set approximates a square pyramid with the lone pair of electrons projected to occupy a position trans to the n-butyl substituent. Inter-estingly, the Te(IV) atoms exhibit opposite chirality. The major difference between the independent mol-ecules relates to the conformation of the five-membered chelate rings, which is an envelope with the O atom being the flap, in one mol-ecule and is twisted about the O-C(methine) bond in the other. No directional inter-molecular inter-actions are noted in the mol-ecular packing beyond the aforementioned Te⋯O secondary bonding. The analysis of the Hirshfeld surface reveals the dominance of H⋯H contacts, i.e. contributing about 70% to the overall surface, and clearly differentiates the immediate crystalline environments of the two independent mol-ecules in terms of both H⋯H and H⋯Cl/Cl⋯H contacts.
    Matched MeSH terms: Tissue Donors
  9. (Tris{2-[(5-chloro-2-oxido-benzyl-idene-κO)amino-κN]eth-yl}amine-κN)-ytterbium(III): crystal structure and Hirshfeld surface analysis
    Lee SM, Lo KM, Tan SL, Tiekink ER
    Acta Crystallogr E Crystallogr Commun, 2016 Oct 1;72(Pt 10):1390-1395.
    PMID: 27746926
    The Yb(III) atom in the title complex, [Yb(C27H24Cl3N4O3)] [systematic name: (2,2',2''-{(nitrilo)-tris-[ethane-2,1-di-yl(nitrilo)-methylyl-idene]}tris-(4-chloro-phenolato)ytterbium(III)], is coordinated by a trinegative, hepta-dentate ligand and exists within an N4O3 donor set, which defines a capped octa-hedral geometry whereby the amine N atom caps the triangular face defined by the three imine N atoms. The packing features supra-molecular layers that stack along the a axis, sustained by a combination of aryl-C-H⋯O, imine-C-H⋯O, methyl-ene-C-H⋯π(ar-yl) and end-on C-Cl⋯π(ar-yl) inter-actions. A Hirshfeld surface analysis points to the major contributions of C⋯H/ H⋯C and Cl⋯H/H⋯Cl inter-actions (along with H⋯H) to the overall surface but the Cl⋯H contacts are at distances greater than the sum of their van der Waals radii.
    Matched MeSH terms: Tissue Donors
  10. Fulltext Bis(μ2-N-methyl-N-phenyl-dithio-carbamato)-κ(3)S,S':S;κ(3)S:S,S'-bis-[(N-methyl-N-phenyl-dithio-carbamato-κ(2)S,S')cadmium]: crystal structure and Hirshfeld surface analysis
    Suwardi SA, Lee SM, Lo KM, Jotani MM, Tiekink ER
    Acta Crystallogr E Crystallogr Commun, 2017 Mar 01;73(Pt 3):429-433.
    PMID: 28316825 DOI: 10.1107/S2056989017002705
    The title compound, [Cd2(C8H8NS2)4], is a centrosymmetric dimer with both chelating and μ2-tridentate di-thio-carbamate ligands. The resulting S5 donor set defines a Cd(II) coordination geometry inter-mediate between square-pyramidal and trigonal-bipyramidal, but tending towards the former. The packing features C-H⋯S and C-H⋯π inter-actions, which generate a three-dimensional network. The influence of these inter-actions, along with intra-dimer π-π inter-actions between chelate rings, has been investigated by an analysis of the Hirshfeld surface.
    Matched MeSH terms: Tissue Donors
  11. Comparison of patient survival between various subgroups among renal transplant patients: a single center experience
    Go KW, Teo SM
    Transplant Proc, 2004 Sep;36(7):2046-7.
    PMID: 15518740
    To compare patient graft survival between various subgroups among renal transplant patients.
    Matched MeSH terms: Tissue Donors
  12. Should a sperm donor have the right to contact the children born from his sperm?
    Tarmizi HM
    BJOG, 2019 Sep;126(10):1232.
    PMID: 31267661 DOI: 10.1111/1471-0528.15840
    Matched MeSH terms: Tissue Donors/legislation & jurisprudence*; Tissue Donors/psychology; Tissue Donors/ethics
  13. Cadaveric organ donation at University Hospital Kuala Lumpur
    Chen TP, Teo SM, Tan JC, Koh SN, Ambalavanar N, Tan SY
    Transplant Proc, 2000 Nov;32(7):1809-10.
    PMID: 11119946
    Matched MeSH terms: Tissue Donors/statistics & numerical data*
  14. In search of the best organ donation legislative system for Hong Kong: further research is needed
    Tafran K
    Hong Kong Med J, 2018 06;24(3):318-319.
    PMID: 29926801 DOI: 10.12809/hkmj187371
    Matched MeSH terms: Tissue Donors*
  15. Fulltext The influence of socioeconomic and demographic variables on willingness to donate cadaveric human organs in Malaysia
    Rasiah R, Manikam R, Chandarsekaran SK, Thangiah G, Puspharajan S, Swaminathan D
    Medicine (Baltimore), 2014 Nov;93(23):e126.
    PMID: 25415665 DOI: 10.1097/MD.0000000000000126
    The growing shortage in human organs has raised serious concerns. To address this problem, we examine in this article the association between demographic and socioeconomic factors, and respondents' willingness to donate cadaveric organs using a large survey of Malaysian adults aged 18 years and above.A convenience sampling method was used to extract information from a total of 10,350 participants from Metropolitan Kuala Lumpur over the period of April 2, 2013 to February 29, 2014. In addition to analyzing the data using incidence of willingness to donate by demographic and socioeconomic factors, we carried out logistic regression analysis to estimate the odds ratio of respondents' willingness to become cadaveric organ donors controlling for age.About less than a third of the participants pledged to donate their organs upon death with women (35.6%) showing a higher incidence compared with men (33.2%). The Chinese (35.7%) and Malays (35.0%) pledged to contribute more than the Indians (31.6%) and the logistic regressions show that Malays (adjusted odds ration [OR] = 1.18) and Chinese (adjusted OR = 1.21) are more likely to donate than Indians (reference group). The results by religion were significant among Muslims and Hindus but not Buddhists. The likelihood of Muslims donating was the lowest (adjusted OR = 0.26). Income was also highly significant but the relationship with willingness to donate was negative. Against tertiary education, all other occupations were significant. However, the respondents with primary education enjoyed the highest adjusted OR (5.46) whereas that of secondary (0.48) and higher secondary (0.83) education was low. Among occupations (against supervisory, clerical, and direct workers), it was significant only among the unemployed and managers with adjusted OR of 1.50 and 1.58, respectively.Sex, education, ethnicity, religion, and income are important demographic and socioeconomic influences on the likelihood of Malaysians willing to become cadaveric organ donors. The Malaysian evidence suggests that awareness programs should be targeted at men, Muslims, Hindus, Malays, and the rich more than the others.
    Matched MeSH terms: Tissue Donors/psychology*; Tissue Donors/statistics & numerical data*
  16. Surgical complications of living unrelated kidney transplantations in a Third-World country
    Lei C, Abdullah K, Morad Z, Suleiman AB
    Transplant Proc, 1992 Oct;24(5):1815.
    PMID: 1412860
    Matched MeSH terms: Tissue Donors
  17. Requirements for the development of a hand transplantation program
    Gordon CR, Siemionow M
    Ann Plast Surg, 2009 Sep;63(3):262-73.
    PMID: 19692900 DOI: 10.1097/SAP.0b013e31818d45e9
    Since 1998, 42 hand transplants in 30 patients have been performed in countries such as France, United States, China, Austria, Malaysia, Italy, Belgium, Poland, Spain, and Germany. Now, with recent improvements in immunosuppression, the clinical applicability may expand and the ethical obstacles may soon be overcome, allowing multiple US institutions to perform hand allotransplantation. The main purpose of this article is to facilitate access to pertinent details in regards to hand transplantation, such as donor/recipient selection criteria, immunosuppressive therapies, and associated complications. It is a comprehensive literature review compiled from published reports from multiple hand transplant programs throughout the world. Due to its inherent complexity, hand transplantation should only be attempted at institutions within the US capable of orchestrating a specialized multidisciplinary team, and each institution's protocol should be extremely detailed and individualized.
    Matched MeSH terms: Tissue Donors
  18. Fulltext Prioritizing Factors Affecting Deceased Organ Donation in Malaysia: Is a New Organ Donation System Required?
    Naghavi N, Mubarik MS, Rasiah R, Sharif Nia H
    Int J Gen Med, 2020;13:641-651.
    PMID: 32982381 DOI: 10.2147/IJGM.S253372
    Purpose: The gap between the demand and the supply of human organs for transplantation is on the rise in Malaysia, despite the efforts of governments to promote donor registration. Factors affecting willingness to donate are contextual and vary from country to country. This research mainly focuses on the selection of most suitable organ donation system through factors affecting willingness to donate in Malaysia. The objectives of this study are to prioritize those factors acting as the pillars of the organ donation system and further to select the most suitable organ donation system for Malaysia.

    Patients and Methods: The data were collected from 35 experts by using a bipolar questionnaire. The study applied an analytical hierarchal process (AHP) for prioritization factors contributing to willingness to donate and then selection of a suitable organ donation system based on prioritized factors.

    Results: Based on the AHP results, it is evident that donation perception (0.36) has the highest priority in influencing organ donation rates, followed by socioeconomic status (0.32), demographic factors (0.23), and financial incentives (0.09). Further, our results challenge the existing opt-in donation system in Malaysia and present a presumptive approach as a suitable system for increasing deceased donation rate in Malaysia. Presumptive approach promotes the role of health-care professionals in securing the family consent.

    Conclusion: This approach is a person-oriented rather than process-oriented strategy and it relies on designated requesters' skills to evoke altruism among bereaved families. Based on results, the authors recommended that relevant government agencies focus on training nurses to discuss donation with bereaved families and raising public awareness.

    Matched MeSH terms: Tissue Donors
  19. Correlation of donor age and telomerase activity with in vitro cell growth and replicative potential for dermal fibroblasts and keratinocytes
    Ng MH, Aminuddin BS, Hamizah S, Lynette C, Mazlyzam AL, Ruszymah BH
    J Tissue Viability, 2009 Nov;18(4):109-16.
    PMID: 19632116 DOI: 10.1016/j.jtv.2009.06.003
    Previous studies suggested telomerase activity as a determinant of cell replicative capacity by delaying cell senescence. This study aimed to evaluate the feasibility of adopting telomerase activity as a selection criterion for in vitro expanded skin cells before autologous transplantation. Fibroblasts and keratinoctyes were derived from the same consenting patients aged 9-69 years, and cultured separately in serum-supplemented and serum-free media, respectively. Telomerase activity of fresh and cultured cells were measured and correlated with cell growth rate, donor age and passage number. The results showed that telomerase activity and cell growth were independent of donor age for both cell types. Telomerase was expressed in freshly digested epidermis and dermis and continued expressing in vitro. Keratinocytes consistently showed 3-12 folds greater telomerase activity than fibroblast both in vivo and in vitro. Conversely, growth rate for fibroblast exceeded that of keratinocyte. Telomerase activity decreased markedly at Passage 6 for keratinocytes and ceased by Passage 3 for fibroblasts. The decrease or cessation of telomerase activity coincided with senescence for keratinocyte but not for fibroblast, implying a telomerase-regulated cell senescence for the former and hence a predictor of replicative capacity for this cell type. Relative telomerase activity for fibroblasts from the younger age group was significantly higher than that from the older age group; 69.7% higher for fresh isolates and 31.1% higher at P0 (p<0.05). No detectable telomerase activity was to be found at later subcultures for both age groups. Similarly for keratinocytes, telomerase activity in the younger age group was significantly higher (p<0.05) compared to that in the older age group; 507.7% at P0, 36.8% at P3 and the difference was no longer significant at P6. In conclusion, the study provided evidence that telomerase sustained the proliferation of keratinocytes but not fibroblasts. Telomerase activity is an important criterion for continued survival and replication of keratinocytes, hence its positive detection before transplantation is desirable. Inferring from our results, the use of keratinocytes from Passage 3 or lesser for construction of skin substitute or cell-based therapy is recommended owing to their sustained telomerase expression.
    Matched MeSH terms: Tissue Donors*
  20. Fulltext Family decision-making about organ donation: a systematic review
    Makmor, T., Abdillah, N., NurulHuda, M.S., Raja Noriza, R.A., Roza Hazli, Z.
    JUMMEC, 2015;18(1):1-4.
    MyJurnal
    The family is an important factor that influences an individual’s decision for organ donation. The number of studies addressing the family’s role in organ donation is limited. It is imperative to explore these studies and offer recommendations that may help in addressing organ shortage. 15 studies with more than 2100 participants were selected for a systematic review. The studies were accessed by searching three databases: MEDLINE, Elsevier, and PsycINFO. This systematic review indicates that knowledge about brain death and the circumstances surrounding organ donation and transplantation are the most important factors that affect a family’s decision regarding organ donation. Educational efforts targeting the family should be initiated, which can then guide the family’s decision on organ donation. We suggest that educational efforts be consistent with other factors such as religious beliefs that influence the family’s decision.
    Matched MeSH terms: Tissue Donors
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