Displaying publications 481 - 500 of 700 in total

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  1. Morad Z, Suleiman AB, Kong CT
    Transplant Proc, 1989 Feb;21(1 Pt 2):1825-6.
    PMID: 2652593
    Matched MeSH terms: Kidney Transplantation*
  2. Fåhraeus R, Fu HL, Ernberg I, Finke J, Rowe M, Klein G, et al.
    Int J Cancer, 1988 Sep 15;42(3):329-38.
    PMID: 2843473
    Expression of the Epstein-Barr virus (EBV) encoded nuclear antigens (EBNA 1 to 6) and membrane-associated protein (LMP) was investigated by immunoblotting in 83 nasopharyngeal carcinoma (NPC) biopsies and 25 other tumor and normal tissue specimens from the head and neck region. Fifty-eight of the 83 NPC biopsies were large enough to yield parallel data on virus DNA and viral expression. All 16 cases of clinically diagnosed and histologically confirmed NPCs from North Africa contained EBV DNA and expressed EBNA-1. Of 31 clinically diagnosed NPCs from China, 29 contained EBV DNA and 25 of these expressed EBNA-1. One control tissue biopsy from the oropharynx of NPC patients contained EBV DNA, but none expressed EBNA-1. The latent membrane protein (LMP) was detected in 22/31 of the Chinese and in 10/16 of the North African NPC biopsies. None of the NPC biopsies or control tissues expressed detectable amounts of EBNA 2 or any of the other 4 nuclear antigens which are invariably expressed in EBV-transformed B cells. A smaller number of tumors from Malaysia and East Africa exhibited a similar pattern of expression. EBV was rescued from a nude-mouse-passaged North African NPC tumor by co-cultivation of the tumor cells with umbilical cord blood lymphocytes. The tumor expressed EBNA 1 and LMP, but not EBNA 2 or the other 4 EBNAs. The resulting LCLs expressed all 6 nuclear antigens, EBNA 1 to 6 and LMP. Our data suggest that expression of the EBV genome is regulated in a tissue-specific fashion.
    Matched MeSH terms: Neoplasm Transplantation; Transplantation, Heterologous
  3. Nordin F, Idris MRM, Mahdy ZA, Wahid SFA
    BMC Pregnancy Childbirth, 2020 Jul 10;20(1):399.
    PMID: 32650736 DOI: 10.1186/s12884-020-03084-7
    BACKGROUND: Umbilical cord blood (UCB) has been proposed as the potential source of haematopoietic stem cells (HSC) for allogeneic transplantation. However, few studies have shown that a common disease in pregnancy such as preeclampsia would affect the quality of UCB-HSC. Total nucleated cell count (TNC) is an important parameter that can be used to predict engraftment including UCB banking. Colony forming unit (CFU) assay is widely used as an indicator to predict the success of engraftment, since direct quantitative assay for HSC proliferation is unavailable. The aim of this study is to investigate the effects of preeclampsia in pregnancy on the stemness and differentiation potency of UCB-HSC.

    METHODS: Mononuclear cells (MNC) were isolated from UCB and further enriched for CD34+ cells using immune-magnetic method followed by CFU assay. A panel of HSC markers including differentiated haematopoietic markers were used to confirm the differentiation ability of UCB-HSC by flow cytometry analysis.

    RESULTS/ DISCUSSION: The HSC progenitor's colonies from the preeclampsia group were significantly lower compared to the control. This correlates with the low UCB volume, TNC and CD34+ cells count. In addition, the UCB-enriched CD34+ population were lymphoid progenitors and capable to differentiate into natural killer cells and T-lymphocytes.

    CONCLUSION: These findings should be taken into consideration when selecting UCB from preeclamptic mothers for banking and predicting successful treatment related to UCB transplant.

    Matched MeSH terms: Hematopoietic Stem Cell Transplantation; Cord Blood Stem Cell Transplantation
  4. Sivalingam S, Haranal M, Moorthy PSK, Dillon J, Kong PK, Fariza I, et al.
    World J Pediatr Congenit Heart Surg, 2020 09;11(5):579-586.
    PMID: 32853067 DOI: 10.1177/2150135120930678
    BACKGROUND: Our study is aimed at evaluating the mid-term surgical outcomes of mitral valve repair in children using various chordal reconstructive procedures (autologous in situ chords or artificial chords).

    METHODS: A retrospective analysis of 154 patients who underwent mitral valve repair using various chordal reconstructive procedures from 1992 to 2012. Patients were divided into group A and group B based on use of artificial chords and autologous in situ chords, respectively, for the repair. There were 102 (66.2%) patients in group A and 52 (33.8%) patients in group B. The mean age at repair was 11.1 ± 4.5 years. Associated cardiac anomalies were found in 94 (61%) patients.

    RESULTS: The median follow-up period was 4.2 years (Interquartile range: 2.0-9.9). There were two (1.3%) early deaths and five (3.2%) late deaths. There was no significant difference in survival at 15 years between the two groups (group A: 91.8% vs group B: 95.1%; P = .66). There was no significant difference in the freedom from reoperation at 15 years between group A (79.4%) and group B (97.2%; P = .06). However, there was significant difference in freedom from valve failure between group A (56.5%) and group B (74.1%; P = .03). Carpentier functional class III and postoperative residual mitral regurgitation (2+ MR, ie, mild-moderate MR) were the risk factors for valve failure.

    CONCLUSIONS: Severity of the disease and its progression has profound effect on the valve repair than the technique itself. Both chordal reconstructive procedures can be used to produce satisfactory results in children.

    Matched MeSH terms: Chordae Tendineae/transplantation*
  5. Kho JPY, Ng BHK, John R
    Med J Malaysia, 2019 02;74(1):82-84.
    PMID: 30846668
    Dermatofibrosarcoma protuberans (DFSP) is a slowgrowing, locally invasive tumour of the dermis. It commonly presents in the trunks and proximal extremities but is seen to a lesser extent in the head and neck regions. We present a case report of a recurrent DFSP in a 48-year-old Iban woman at the occipital region. The patient underwent wide local excision and removal of outer table of cranium, dressing followed by split thickness skin graft. Histopathological examination confirmed dermatofibrosarcoma protuberans with clear lateral surgical margins and a deep margin of 0.5mm. She is currently undergoing radiotherapy and is planned for 50Grey 25cycles.
    Matched MeSH terms: Skin Transplantation/methods
  6. Hojsak I, Avitzur Y, Mor E, Shamir R, Haimi-Cohen Y, Zakay-Rones Z, et al.
    Pediatr Infect Dis J, 2011 Jun;30(6):491-4.
    PMID: 21248658 DOI: 10.1097/INF.0b013e31820b7c22
    Data on the immunogenicity of the influenza vaccine in children after liver transplantation are sparse. Our study aims to evaluate the response of such patients to the trivalent influenza vaccine, administered by different protocols in 2 influenza seasons.
    Matched MeSH terms: Transplantation*
  7. Yeap JS, Birch R, Singh D
    Int Orthop, 2001;25(2):114-8.
    PMID: 11409449
    Twelve patients with drop-foot secondary to sciatic or common peroneal nerve palsy treated with transfer of the tibialis posterior tendon were followed-up for a mean of 90 (24-300) months. In 10 patients the results were 'excellent' or 'good'. In 11 patients grade 4 or 5 power of dorsiflexion was achieved, although the torque, as measured with a Cybex II dynamometer, and generated by the transferred tendon, was only about 30% of the normal side. Seven patients were able to dorsiflex their foot to the neutral position and beyond. The results appeared to be better in men under 30 years of age with common peroneal palsies. A painful flatfoot acquired in adulthood does not appear to be a significant long-term complication despite the loss of a functioning tibialis posterior tendon.
    Matched MeSH terms: Tendons/transplantation*
  8. Neoh CF, Snell G, Levvey B, Morrissey CO, Stewart K, Kong DC
    Int J Antimicrob Agents, 2014 Sep;44(3):194-202.
    PMID: 25123811 DOI: 10.1016/j.ijantimicag.2014.05.013
    Lung transplant (LTx) patients have an increased risk of developing invasive fungal infections (IFIs), particularly invasive aspergillosis. Rapid identification of the causative fungal pathogen, to allow for early administration of appropriate initial antifungal therapy, in LTx patients has been challenging due to the limited sensitivity and specificity of the diagnostic tools. Hence, there is increasing emphasis on antifungal prophylaxis in the LTx setting, given the high mortality rates and substantial cost of treating IFIs. Evidence for the optimal antifungal prophylactic approach in this setting, however, remains scant and inconsistent. This review will briefly discuss the epidemiology, risk factors, timing and clinical manifestations of fungal infections in LTx patients and will focus primarily on the available evidence related to the efficacy, safety and practicality of current prophylactic strategies in LTx recipients as well as challenges and gaps for future research.
    Matched MeSH terms: Lung Transplantation/adverse effects*
  9. Azmi SM, Salih M, Abdelrazeg S, Roslan FF, Mohamed R, Tan JJ, et al.
    Regen Med, 2020 03;15(3):1381-1397.
    PMID: 32253974 DOI: 10.2217/rme-2019-0103
    Aim: As a strategy to improve the outcome of ex vivo cultivated corneal epithelial transplantation, the role of human umbilical cord-derived mesenchymal stem cells (hUC-MSCs) is investigated in promoting corneal epithelial growth and functions. Materials & methods: Human telomerase-immortalized corneal epithelial cells were characterized and its functions evaluated by scratch migration assay, cellular senescence, HLA expression and spheres formation with hUC-MSC. Results: Expression of corneal epithelial markers was influenced by the duration and method of co-culture. Indirect co-culture improved cellular migration and delayed senescence when treated after 3 and 5 days. hUC-MSC downregulated expression of HLA Class I and II in IFN-γ-stimulated human telomerase-immortalized corneal epithelial cells. Conclusion: hUC-MSC promote corneal epithelial growth and functions after treatment with hUC-MSC.
    Matched MeSH terms: Mesenchymal Stem Cell Transplantation/methods*
  10. Ismail R, Allaudin ZN, Abdullah R, Mohd Lila MA, Nik Abd Rahman NM, Abdul Rahman SO
    BMC Cancer, 2016 07 13;16:461.
    PMID: 27411985 DOI: 10.1186/s12885-016-2530-8
    BACKGROUND: Cancer therapies that kill cancer cells without affecting normal cells is the ultimate mode of treating cancers. The VP3, an avian virus-derived protein, can specifically initiate cell death through several signal transduction pathways leading to apoptosis. In cancer, chemoresistance and cell survivability implicate the cell surface protein, CD147.

    METHODS: In this study, transfection of VP3 and silencing of CD147 genes was achieved through the treatment of tumors with pVIVO1-GFP/VP3 (VP3), psiRNA-CD147/2 (shCD147/2), and their combination of CT26 colon cancer cell-induced in mice. The effectiveness of tumor-treatment was ascertained by electrophoresis, TUNEL assay, and flow cytometry analysis. While histopathological and biochemical analysis were used as toxic side effect identification.

    RESULTS: The tumor growth delay index (TGDI) after treatment with VP3, shCD147/2, and their combination treatments increased by 1.3-, 1.2-, 2.0- and 2.3-fold respectively, over untreated control. The VP3-shCD147/2 combination treatment was more efficacious then either VP3 or shCD147/2 alone in the retardation of mouse CT26 colorectal cell tumor allograft.

    CONCLUSION: The antitumor effect of the combination treatment is the result of synergistic effects of VP3 and shCD147/2 on the tumor cells resulting in apoptosis. Thus, the study shows that combination of VP3 and shCD147/2 treatment can be developed into a potential approach for anticolorectal cancer treatment regimen.

    Matched MeSH terms: Allografts/transplantation
  11. Kardia E, Ch'ng ES, Yahaya BH
    J Tissue Eng Regen Med, 2018 02;12(2):e995-e1007.
    PMID: 28105760 DOI: 10.1002/term.2421
    Aerosol-based cell therapy has emerged as a novel and promising therapeutic strategy for treating lung diseases. The goal of this study was to determine the safety and efficacy of aerosol-based airway epithelial cell (AEC) delivery in the setting of acute lung injury induced by tracheal brushing in rabbit. Twenty-four hours following injury, exogenous rabbit AECs were labelled with bromodeoxyuridine and aerosolized using the MicroSprayer® Aerosolizer into the injured airway. Histopathological assessments of the injury in the trachea and lungs were quantitatively scored (1 and 5 days after cell delivery). The aerosol-based AEC delivery appeared to be a safe procedure, as cellular rejection and complications in the liver and spleen were not detected. Airway injury initiated by tracheal brushing resulted in disruption of the tracheal epithelium as well as morphological damage in the lungs that is consistent with acute lung injury. Lung injury scores were reduced following 5 days after AEC delivery (AEC-treated, 0.25  ±  0.06 vs. untreated, 0.53  ±  0.05, P  
    Matched MeSH terms: Epithelial Cells/transplantation*
  12. Silva JF
    J Trauma, 1972 Dec;12(12):1029-40.
    PMID: 4568503
    Matched MeSH terms: Transplantation, Autologous; Bone Transplantation
  13. Fakiruddin KS, Ghazalli N, Lim MN, Zakaria Z, Abdullah S
    Int J Mol Sci, 2018 07 27;19(8).
    PMID: 30060445 DOI: 10.3390/ijms19082188
    Tapping into the ability of engineered mesenchymal stem cells (MSCs) to mobilise into the tumour has expanded the scope of cancer treatment. Engineered MSCs expressing tumour necrosis factor (TNF)-related apoptosis inducing ligand (MSC-TRAIL) could serve as a platform for an efficient and targeted form of therapy. However, the presence of cancer stem cells (CSCs) that are resistant to TRAIL and apoptosis may represent a challenge for effective treatment. Nonetheless, with the discovery of small molecular inhibitors that could target CSCs and tumour signalling pathways, a higher efficacy of MSC-TRAIL mediated tumour inhibition can be achieved. This might pave the way for a more effective form of combined therapy, which leads to a better treatment outcome. In this review, we first discuss the tumour-homing capacity of MSCs, its effect in tumour tropism, the different approach behind genetically-engineered MSCs, and the efficacy and safety of each agent delivered by these MSCs. Then, we focus on how sensitisation of CSCs and tumours using small molecular inhibitors can increase the effect of these cells to either TRAIL or MSC-TRAIL mediated inhibition. In the conclusion, we address a few questions and safety concerns regarding the utilization of engineered MSCs for future treatment in patients.
    Matched MeSH terms: Mesenchymal Stem Cell Transplantation*
  14. Poh Yuen Wen A, Halim AS, Mat Saad AZ, Mohd Nor F, Wan Sulaiman WA
    Complement Ther Med, 2018 Dec;41:261-266.
    PMID: 30477850 DOI: 10.1016/j.ctim.2018.10.006
    BACKGROUND: Gamat (sea-cucumber) is a natural occurring fauna which is popularly used as traditional medication in Southeast Asian countries. There have been many animal studies done on its' biochemical properties and its' effects in vivo. The effect of gamat on human cutaneous wounds was studied using a split-skin graft donor site wound.

    METHODS: This was a comparative case-control study done on patients in Hospital Universiti Sains Malaysia (Hospital USM), requiring split-thickness skin grafting, whereby, the skin graft donor site was divided to almost equal halves, and applied with both gamat-based gel on one side, with Duoderm® hydrogel on the other side. The epithelialization of the wounds was observed and compared on days 10, 14 and 21. Pain score, and pruritus score were also observed. Repeated measure analysis of variance (ANOVA) test and Paired t-test was used to test statistical significance accordingly.

    RESULTS: No significant differences were seen in rates of epithelialization of wounds on days 10, 14 and 21 (p > 0.01). No significant difference was also seen in the pain score and pruritus score (p > 0.01).

    CONCLUSIONS: A gamat-based gel is comparable to conventional hydrogels in treatment of split-skin graft donor site. No adverse effects were observed in either group.

    Matched MeSH terms: Skin Transplantation*
  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.

    Matched MeSH terms: Organ Transplantation/psychology*
  16. Mitra NK, Bindal U, Eng Hwa W, Chua CL, Tan CY
    Int J Clin Exp Pathol, 2015;8(10):12041-52.
    PMID: 26722389
    Out of the minor myelin proteins, most significant one is myelin oligodendrocyte glycoprotein (MOG). Mesenchymal stem cells (MSCs) have proven immunoregulatory capacity. The objective of this study was to investigate the effects of syngeneic MSCs on mouse model of experimental autoimmune encephalomyelitis (EAE) through observation of locomotion by footprint analysis, histological analysis of spinal cord and estimation IL-17. C57BL/6 mice (10 weeks, n = 16) were immunized with 300 µg of MOG35-55 and 200 µL of complete Freund's adjuvant (CFA) to produce EAE model. Sham-treated control (n = 8) were injected with CFA. Half of immunized mice were given 100 µL of PBS (n = 8) and next half (n = 8) received 1 × 10(5) MSCs on day 11 through the tail veins. Clinical scoring showed development of EAE (loss of tonicity of tail and weakness of hind limb) on day 10. Following MSC treatment, clinical scores and hindlimb stride length showed significant improvement on day 15 onwards, compared to day 10 (P < 0.05). Under LFB staining, while PBS-treated group of EAE mice showed pale and degenerated axons in anterolateral white column of lumbar spinal cord, MSC-treated group showed numerous normal-looking axons. H&E staining showed normal axons in anterolateral white column and reduction of macrophages in MSC-treated EAE mice group. A lower level of IL-17 was observed in MSC treated EAE mice, compared to PBS-treated EAE mice. Our results suggest that Intravenous MSC has the potential to improve the locomotion and regeneration of axons in spinal cord in MOG-induced EAE model.
    Matched MeSH terms: Mesenchymal Stem Cell Transplantation/methods*
  17. Kim JT, Sasidaran R
    Aesthetic Plast Surg, 2017 Dec;41(6):1362-1374.
    PMID: 28849246 DOI: 10.1007/s00266-017-0962-4
    INTRODUCTION: Autogenous grafting with lipoaspirate and dermo-fat grafting are popular techniques employed by plastic surgeons for correcting small volume facial defects and contour deformities. These techniques however present certain disadvantages. In this article, we present the use of the buccal fat pad graft as an alternative method of correcting such facial deformities.

    PATIENTS AND METHODS: Free buccal fat pad grafting was carried out in 15 patients in our institution. All were harvested using an intraoral approach. The buccal fat pad graft was used to correct periorbital contour depressions, nasal tip deformities, as a camouflage graft over exposed silicon nasal implants and as a filler in the depression deformity after mass excision.

    RESULTS: All 15 patients demonstrated good contour deformity correction without a significant graft resorption up to 3 years of follow-up. There were no donor site complications. The amount used ranged from 1 to 5 cc in volume as a spacer or barrier for the moderate-sized volume defect or depression, even though more than 5 cc of fat graft could be harvested if required.

    CONCLUSION: In conclusion, the buccal fat pad graft represents an easy, expedient and exceptional tool for the correction of contour deformities, volume replacement or for aesthetic augmentation.

    LEVEL OF EVIDENCE IV: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

    Matched MeSH terms: Adipose Tissue/transplantation*
  18. Chamsi-Pasha H, Albar MA
    Med J Malaysia, 2017 10;72(5):278-281.
    PMID: 29197882
    INTRODUCTION: The ever-increasing technological advances of Western medicine have created new ethical issues awaiting answers and response. The use of genetic therapy, organ transplant, milk-banking, end-of-life care and euthanasia are of paramount importance to the medical students and need to be addressed.

    METHODS: A series of searches were conducted of Medline databases published in English between January 2000 and January 2017 with the following keywords: medical ethics, syllabus, Islam, jurisprudence.

    RESULTS: Islamic medical jurisprudence is gaining more attention in some medical schools. However, there is still lack of an organised syllabus in many medical colleges.

    CONCLUSION: The outlines of a syllabus in Islamic medical jurisprudence including Islamic values and moral principles related to both the practice and research of medicine are explored.

    Matched MeSH terms: Organ Transplantation/legislation & jurisprudence
  19. Hu Y, Ran J, Zheng Z, Jin Z, Chen X, Yin Z, et al.
    Acta Biomater, 2018 04 15;71:168-183.
    PMID: 29524675 DOI: 10.1016/j.actbio.2018.02.019
    Anterior cruciate ligament (ACL) is one of the most difficult tissues to heal once injured. Ligament regeneration and tendon-bone junction healing are two major goals of ACL reconstruction. This study aimed to investigate the synergistic therapeutic effects of Stromal cell-derived factor 1 (SDF-1)-releasing collagen-silk (CSF) scaffold combined with intra-articular injection of ligament-derived stem/progenitor cells (LSPCs) for ACL regeneration and the amelioration in the long-term complication of osteoarthritis (OA). The stem cell recruitment ability of CSF scaffold and the multipotency, particularly the tendon forming ability of LSPCs from rabbits were characterized in vitro, while the synergistic effect of the CSF scaffold and LSPCs for ACL regeneration and OA amelioration were investigated in vivo at 1, 3, and 6 months with a rabbit ACL reconstruction model. The CSF scaffold was used as a substitute for the ACL, and LSPCs were injected into the joint cavity after 7 days of the ACL reconstruction. CSF scaffold displayed a controlled release pattern for the encapsulated protein for up to 7 days with an increased stiffness in the mechanical property. LSPCs, which exhibited highly I Collagen and CXCR4 expression, were attracted by SDF-1 and successfully relocated into the CSF scaffold at 1 month in vivo. At 3 and 6 months post-treatment, the CSF scaffold combined with LSPCs (CSFL group) enhanced the regeneration of ACL tissue, and promoted bone tunnel healing. Furthermore, the OA progression was impeded efficiently. Our findings here provided a new strategy that using stem cell recruiting CSF scaffold with tissue-specific stem cells, could be a promising solution for ACL regeneration.

    STATEMENT OF SIGNIFICANCE: In this study, we developed a silk scaffold with increased stiffness and SDF-1 controlled release capacity for ligament repair. This advanced scaffold transplantation combined with intra-articular injection of LSPCs (which was isolated from rabbit ligament for the first time in this study) promoted the regeneration of both the tendinous and bone tunnel portion of ACL. This therapeutic strategy also ameliorated cartilage degeneration and reduced the severity of arthrofibrosis. Hence, combining LSPCs injection with SDF-1-releasing silk scaffold is demonstrated as a therapeutic strategy for ACL regeneration and OA treatment in the clinic.

    Matched MeSH terms: Stem Cell Transplantation*
  20. Jayaranee S, Ramesh P, Nadesan V
    Singapore Med J, 2002 Aug;43(8):421-2.
    PMID: 12507029
    Immune haemolysis following renal transplantation has been reported and known causes include infection, medication and metabolic disturbances (1,2). Autoimmune haemolysis after renal transplantation secondary to ABO minor mismatch is an uncommon but important cause that should be considered in the differential diagnosis of post-transplantation haemolysis. A case of haemolytic anaemia caused by graft versus host antibody formation is presented. We suggest that direct Coomb's test should be done as a routine in all cases of ABO mismatch renal transplantation and red cells compatible with both donor and recipient or group "O" packed cells should be transfused if transfusion is indicated.
    Matched MeSH terms: Kidney Transplantation/adverse effects*
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