Displaying publications 201 - 220 of 700 in total

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  1. Fulltext Alveolar Bone Grafting Without Closure Of Oronasal Fistula In Cleft And Palate Patient
    Abdul Rahman, Z.A.
    Ann Dent, 2004;11(1):-.
    MyJurnal
    The standard procedure for alveolar cleft closure in cleft lip and palate patients is by alveolar bone grafting (ABG) where the residual opening of oronasal fistula in the palate is also closed simultaneously. Occasionally there is a situation of soft tissue inadequacy and attempt to close the fistula at the same procedure as ABG may compromise the result of the bone graft itself. An unforeseen leakage at the closure may cause graft infection leading to failure. This article reports on a technique where alveolar bone grafting was done without closure of residual palatal fistula to provide adequate soft tissue coverage for the grafted bone. This may reduce the risk of leakage at the oral mucosal coverage of the graft . The residual palatal fistula will be closed at later stage by muco-palatal flap or tongue flap. We reported on a case of a failed ABG which was reconstructed using this technique. Various other techniques to ensure success of ABG were also discussed. Conclusion: The alveolar bone grafting without closure of oro-nasal fistula reduced the risk of failure of ABG in a wide alveolar cleft.
    Matched MeSH terms: Bone Transplantation
  2. Fulltext Reconstruction options following wide excision of basal cell carcinoma of the face
    Khoo, Hau Chun, Enda Gerard, Kelly, Mohd Ali Mat Zain, Farrah-Hani Imran
    Journal of Surgical Academia, 2015;5(2):70-74.
    MyJurnal
    Basal cell carcinoma is the commonest skin malignancy diagnosed in Malaysia. Surgery is the recommended treatment of choice with the lowest failure rate provided a clear margin is obtained. However, the defect may be too large to be repaired primarily. Formal reconstruction using grafts and flaps should be done to achieve the optimal aim of maintaining the integrity, function and cosmetic patient outcome. Three reconstructive methods are described in this series to restore the facial defect following the wide local excision. The procedures described were peri-alar crescentic advancement flap, nasolabial rotational flap and full thickness skin graft using supraclavicular skin. This series highlights the usage of the procedures based on solid foundation and principles, without compromising the desired outcomes for the patient.
    Matched MeSH terms: Skin Transplantation
  3. Fulltext Metastatic neuroendocrine tumor of small cell type in a kidney transplant recipient
    Mohd Kamil A, Draman CR, Seman MR, Kalavathy R, Mubarak MY
    Saudi J Kidney Dis Transpl, 2016 Jul-Aug;27(4):787-90.
    PMID: 27424699 DOI: 10.4103/1319-2442.185259
    Malignancy is a significant long-term complication of successful renal transplantation. Not only the rate is higher but also cases are highly aggressive. We report a case of metastatic, small cell, neuroendocrine tumor in a post-renal transplant patient with progressive left inguinal nodes and right lumbar swellings. He had a remarkably elevated serum lactate dehydrogenase levels with multiple metastatic masses in the left inguinal, left iliac fossa, and right lower abdominal wall on abdominal computed tomography scan. Excisional biopsy of a left inguinal node revealed extensive infiltration with malignant cells in it. Immunohistochemistry staining was positive for synaptophysin, prostatic specific antigen, and CD56. While the primary small cell carcinoma of genitourinary organs is rare, the case illustrates the highly aggressive nature of the disease in a kidney transplant recipient.
    Matched MeSH terms: Kidney Transplantation
  4. Criticizing the critique on the presumed consent system
    Tafran K
    Kidney Int, 2018 11;94(5):1023.
    PMID: 30348288 DOI: 10.1016/j.kint.2018.08.017
    Matched MeSH terms: Organ Transplantation
  5. Fulltext Reconstruction of Secondary Type Congenital Hallux Varus with Modification of the Farmer Technique for Cover of Skin Defect: Report of Three Cases
    Sulaiman AR, Munajat I, M-Yusuf H, Nik-Jaffar N, Zarullail NH, Mohd EF, et al.
    Malays Orthop J, 2019 Nov;13(3):72-76.
    PMID: 31890115 DOI: 10.5704/MOJ.1911.013
    The reconstruction of hallux varus deformity involves the release of contracted medial structure and realignment of the phalange, leaving a significant skin defect which requires cover. Farmer described proximal based rotational skin flap from the first web space to cover the defect. This technique may compromise the circulation to the flap and risk to the lateral digital vessels. We modified his technique to address these issues. We report a successful reconstruction using the Farmer's technique on one patient and a modified technique on three patients. We used the excess skin from the extra digit to cover the medial defect. We found this modified technique of skin cover safe without risk of injuring the neurovascular bundle. There was no recurrence of deformity at last foolow-up. All patients were able to wear normal shoes.
    Matched MeSH terms: Skin Transplantation
  6. Comparative evaluation of bioburden and sterility of indigenously prepared bone allograft with and without gentamicin
    Makker K, Lamba AK, Faraz F, Tandon S, Sheikh Ab Hamid S, Aggarwal K, et al.
    Cell Tissue Bank, 2019 Jun;20(2):243-253.
    PMID: 30903410 DOI: 10.1007/s10561-019-09763-w
    During bone allograft processing, despite stringent donor screening and use of aseptic techniques, microbial invasion may occur due to the porous nature of the graft and cause potentially fatal infections. The aim of the present study was to prepare bone allograft with and without gentamicin and to compare bioburden and sterility in the obtained grafts to evaluate the role of antibiotic in enhancing graft safety. Fifty samples of demineralized freeze-dried bone allograft were prepared from suitable donors according to international standards. Randomly selected 25 samples were placed in 8 mg gentamicin/gram bone solution for 1 h. Packaging and sealing was done to ensure no microbial ingress during transportation. 40 samples were selected for bioburden testing. Remaining 10 were subjected to 25 kGy gamma radiation and tested for sterility. Microbiological evaluation revealed no evidence of colony forming units in all the samples of both the groups (Bioburden = 0). Post-radiation sterility testing also revealed no bacterial colony in the tested samples from both the groups. Favorable results validate the processing protocol while comparable results in both groups indicate no additive benefit of gentamicin addition. Nil bioburden may be used in further studies to determine a lower radiation dose to achieve adequate sterility and minimize the disadvantages of radiation like collagen cross-linking and decreased osteoinductive capacity.
    Matched MeSH terms: Transplantation, Homologous/adverse effects; Bone Transplantation/adverse effects*
  7. Acute Lung Injury: Disease Modelling and the Therapeutic Potential of Stem Cells
    Lian J, Lin J, Zakaria N, Yahaya BH
    Adv Exp Med Biol, 2020;1298:149-166.
    PMID: 32424492 DOI: 10.1007/5584_2020_538
    Acute lung injury (ALI) is a severe clinical condition with high morbidity and mortality that usually results in the development of multiple organ dysfunction. The complex pathophysiology of ALI seems to provide a wide range of targets that offer numerous therapeutic options. However, despite extensive studies of ALI pathophysiology and treatment, no effective pharmacotherapy is available. Increasing evidence from both preclinical and clinical studies supports the preventive and therapeutic effects of mesenchymal stem cells (MSCs) for treating ALI. As cell-based therapy poses the risk of occlusion in microvasculature or unregulated growth, MSC-derived extracellular vesicles (MSC-EVs) have been extensively studied as a new therapeutic strategy for non-cell based therapy. It is widely accepted that the therapeutic properties of MSCs are derived from soluble factors with paracrine or endocrine effects, and EVs are among the most important paracrine or endocrine vehicles that can deliver various soluble factors with a similar phenotype as the parent cell. Therapeutic effects of MSCs have been reported for various delivery approaches, diverse doses, multiple origins, and different times of administration, and MSC-EVs treatment may include but is not limited to these choices. The mechanisms by which MSCs and MSC-EVs may contribute to ALI treatment remain elusive and need further exploration. This review provides an overview of preclinical studies that support the application of MSC-EVs for treating ALI, and it discusses emerging opportunities and their associated challenges.
    Matched MeSH terms: Mesenchymal Stem Cell Transplantation
  8. Reconstruction for chronic grade-II posterior cruciate ligament deficiency in Malaysian military personnel
    Ahmad S, Mahidon R, Shukur MH, Hamdan A, Kasmin M
    J Orthop Surg (Hong Kong), 2014 Dec;22(3):325-8.
    PMID: 25550011
    To evaluate the outcome of reconstruction for chronic grade-II posterior cruciate ligament (PCL) deficiency in Malaysian military personnel.
    Matched MeSH terms: Tendons/transplantation; Transplantation, Autologous
  9. Fulltext Osteo-odonto-keratoprosthesis for end-stage cornea blindness
    Wong HS, Then KY, Ramli R
    Med J Malaysia, 2011 Oct;66(4):369-70.
    PMID: 22299563 MyJurnal
    We report the first case of Osteo-odonto-keratoprosthesis (OOKP) who successfully underwent surgery in Malaysia following a grade 4 (severe) chemical injury in both eyes in 2006. The patient's left eye was eviscerated and his right eye underwent penetrating keratoplasty. However, the corneal graft failed and became opaque. His right eye could only perceive light. The OOKP was offered to him hoping to recover some functional vision. He underwent a 2-stage surgery to implant the OOKP into his right eye. However, 2 months post-operation, he developed vitreous haemorrhage. A successful pars plana vitrectomy (PPV) was performed via the limited view through the lens. He attained a final visual acuity of 6/60 (N36). He was able to mobilize more independently, feed, dress himself and read large print.
    Matched MeSH terms: Alveolar Process/transplantation*; Tooth Root/transplantation*
  10. Stem cells in stroke repair: current success and future prospects
    Gopurappilly R, Pal R, Mamidi MK, Dey S, Bhonde R, Das AK
    CNS Neurol Disord Drug Targets, 2011 Sep 1;10(6):741-56.
    PMID: 21838668
    Stroke causes a devastating insult to the brain resulting in severe neurological deficits because of a massive loss of different neurons and glia. In the United States, stroke is the third leading cause of death. Stroke remains a significant clinical unmet condition, with only 3% of the ischemic patient population benefiting from current treatment modalities, such as the use of thrombolytic agents, which are often limited by a narrow therapeutic time window. However, regeneration of the brain after ischemic damage is still active days and even weeks after stroke occurs, which might provide a second window for treatment. Neurorestorative processes like neurogenesis, angiogenesis and synaptic plasticity lead to functional improvement after stroke. Stem cells derived from various tissues have the potential to perform all of the aforementioned processes, thus facilitating functional recovery. Indeed, transplantation of stem cells or their derivatives in animal models of cerebral ischemia can improve function by replacing the lost neurons and glial cells and by mediating remyelination, and modulation of inflammation as confirmed by various studies worldwide. While initially stem cells seemed to work by a 'cell replacement' mechanism, recent research suggests that cell therapy works mostly by providing trophic support to the injured tissue and brain, fostering both neurogenesis and angiogenesis. Moreover, ongoing human trials have encouraged hopes for this new method of restorative therapy after stroke. This review describes up-to-date progress in cell-based therapy for the treatment of stroke. Further, as we discuss here, significant hurdles remain to be addressed before these findings can be responsibly translated to novel therapies. In particular, we need a better understanding of the mechanisms of action of stem cells after transplantation, the therapeutic time window for cell transplantation, the optimal route of cell delivery to the ischemic brain, the most suitable cell types and sources and learn how to control stem cell proliferation, survival, migration, and differentiation in the pathological environment. An integrated approach of cell-based therapy with early-phase clinical trials and continued preclinical work with focus on mechanisms of action is needed.
    Matched MeSH terms: Stem Cell Transplantation/methods*; Stem Cell Transplantation/trends*
  11. Autotransplantation of maxillary canine following removal of compound odontome: a case report
    Zaman JQ, Yahaya N, Razali M, Ibrahim N, Nor GM, Ramli R
    Singapore Dent J, 2007 Dec;29(1):41-5.
    PMID: 18472529
    Obstruction remains as an important cause of failure in the eruption of a tooth. In this article, a 15-year-old girl was presented with retained upper left primary canine (63) and first primary molar (64), while the contralateral permanent canine (13) and premolars (14 and 15) have erupted. Upon radiographic examination, a mass which was diagnosed later to be compound odontome was detected. The treatment consisted of surgical removal of the odontome, extraction of the primary canine (63) and left permanent canine (23), and transplantation of the permanent canine (23). The management of this case and the literature related to autotransplantation are discussed.
    Matched MeSH terms: Cuspid/transplantation*; Transplantation, Autologous
  12. Autologous chondrocyte transplantation in the repair of full-thickness focal cartilage damage in rabbits
    Kamarul T, Selvaratnam L, Masjuddin T, Ab-Rahim S, Ng C, Chan KY, et al.
    J Orthop Surg (Hong Kong), 2008 Aug;16(2):230-6.
    PMID: 18725678
    To compare the efficacy of autologous chondrocyte transplantation (ACT) versus non-operative measures for cartilage repair in rabbits.
    Matched MeSH terms: Transplantation, Autologous; Chondrocytes/transplantation*
  13. Use of dermal regeneration template (INTEGRA) in reconstructive burn surgery
    Sasidaran R, Dorai AA, Sulaiman WA, Halim AS
    Med J Malaysia, 2008 Jul;63 Suppl A:29.
    PMID: 19024967
    We present our two year experience with a dermal regeneration template (INTEGRA) in burn reconstructive surgery for contracture release as well as a reconstructive tool for management of soft tissue loss.
    Matched MeSH terms: Skin Transplantation/instrumentation*; Skin Transplantation/methods
  14. The stemness gene expression of cultured human amniotic epithelial cells in serial passages
    Simat SF, Chua KH, Abdul Rahman H, Tan AE, Tan GC
    Med J Malaysia, 2008 Jul;63 Suppl A:53-4.
    PMID: 19024980
    The aim of the study is to evaluate the stemness gene expression of cultured human amniotic epithelial cells (HAECs) in serial passages. HAECs obtained from human term placentae were cultured in F12:DMEM(1:1) + 10% FBS +10ng/ml EGF in serial passages (P0, P1, P2 and P4). Quantitative RT-PCR was used to assess the gene expression analysis. The results showed that cultured HAECs expressed and downregulated the stemness genes expression for Oct-4, Sox-2, Nanog3, FGF4, Rex-1, FZD-9, BST-1 ABCG2. However, vimentin and nestin gene expression were upregulated. The results suggested that cultured HAECs may have pluripotent and multipotent properties.
    Matched MeSH terms: Epithelium/transplantation*; Pluripotent Stem Cells/transplantation
  15. Successful commercialisation of locally fabricated bioceramics for clinical applications
    Fazan F, Besar I, Osman A, Samsudin AR, Khalid KA
    Med J Malaysia, 2008 Jul;63 Suppl A:49-50.
    PMID: 19024978
    This paper chronicled the development of a locally produced bone graft substitute based on calcium phosphate bioceramics called "GranuMaS--from concepts to clinics, and finally to its successful commercialization all within 5-year duration. It was a Prioritized Research (PR) collaborative project of 5 institutions namely SIRIM, ANM, USM, UKM and IIUM, funded by MOSTI to the amount of approximately RM2.5 millions under RM8. This paper also highlighted the requirements needed in terms of technical expertise/manpower, facilities and infrastructure, and government/institutional supports, as well as the challenge faced in developing and commercializing such product.
    Matched MeSH terms: Bone Transplantation/instrumentation*; Bone Transplantation/methods
  16. Fulltext Cell therapy: the final frontier for treatment of neurological diseases
    Dutta S, Singh G, Sreejith S, Mamidi MK, Husin JM, Datta I, et al.
    CNS Neurosci Ther, 2013 Jan;19(1):5-11.
    PMID: 23253099 DOI: 10.1111/cns.12027
    Neurodegenerative diseases are devastating because they cause increasing loss of cognitive and physical functions and affect an estimated 1 billion individuals worldwide. Unfortunately, no drugs are currently available to halt their progression, except a few that are largely inadequate. This mandates the search of new treatments for these progressively degenerative diseases. Neural stem cells (NSCs) have been successfully isolated, propagated, and characterized from the adult brains of mammals, including humans. The confirmation that neurogenesis occurs in the adult brain via NSCs opens up fresh avenues for treating neurological problems. The proof-of-concept studies demonstrating the neural differentiation capacity of stem cells both in vitro and in vivo have raised widespread enthusiasm toward cell-based interventions. It is anticipated that cell-based neurogenic drugs may reverse or compensate for deficits associated with neurological diseases. The increasing interest of the private sector in using human stem cells in therapeutics is evidenced by launching of several collaborative clinical research activities between Pharma giants and research institutions or small start-up companies. In this review, we discuss the major developments that have taken place in this field to position stem cells as a prospective candidate drug for the treatment of neurological disorders.
    Matched MeSH terms: Cell Transplantation/methods*; Cell Transplantation/trends*
  17. Liver transplantation in the Asia Pacific region--trials and tribulations
    Fan ST
    Med J Malaysia, 2005 Jul;60 Suppl B:1-4.
    PMID: 16108164
    Matched MeSH terms: Liver Transplantation/methods; Liver Transplantation/trends*
  18. Interventions for treating oro-antral communications and fistulae due to dental procedures
    Kiran Kumar Krishanappa S, Prashanti E, Sumanth KN, Naresh S, Moe S, Aggarwal H, et al.
    Cochrane Database Syst Rev, 2016 May 27.
    PMID: 27231038 DOI: 10.1002/14651858.CD011784.pub2
    BACKGROUND: An oro-antral communication is an unnatural opening between the oral cavity and maxillary sinus. When it fails to close spontaneously, it remains patent and is epithelialized to develop into an oro-antral fistula. Various surgical and non-surgical techniques have been used for treating the condition. Surgical procedures include flaps, grafts and other techniques like re-implantation of third molars. Non-surgical techniques include allogenic materials and xenografts.

    OBJECTIVES: To assess the effectiveness and safety of various interventions for the treatment of oro-antral communications and fistulae due to dental procedures.

    SEARCH METHODS: We searched the Cochrane Oral Health Group's Trials Register (whole database, to 3 July 2015), the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library, 2015, Issue 6), MEDLINE via OVID (1946 to 3 July 2015), EMBASE via OVID (1980 to 3 July 2015), US National Institutes of Health Trials Registry (http://clinicaltrials.gov) (whole database, to 3 July 2015) and the World Health Organization (WHO) International Clinical Trials Registry Platform (http://www.who.int/ictrp/en/) (whole database, to 3 July 2015). We also searched the reference lists of included and excluded trials for any randomised controlled trials (RCTs).

    SELECTION CRITERIA: We included RCTs evaluating any intervention for treating oro-antral communications or oro-antral fistulae due to dental procedures. We excluded quasi-RCTs and cross-over trials. We excluded studies on participants who had oro-antral communications, fistulae or both related to Caldwell-Luc procedure or surgical excision of tumours.

    DATA COLLECTION AND ANALYSIS: Two review authors independently selected trials. Two review authors assessed trial risk of bias and extracted data independently. We estimated risk ratios (RR) for dichotomous data, with 95% confidence intervals (CI). We assessed the overall quality of the evidence using the GRADE approach.

    MAIN RESULTS: We included only one study in this review, which compared two surgical interventions: pedicled buccal fat pad flap and buccal flap for the treatment of oro-antral communications. The study involved 20 participants. The risk of bias was unclear. The relevant outcome reported in this trial was successful (complete) closure of oro-antral communication.The quality of the evidence for the primary outcome was very low. The study did not find evidence of a difference between interventions for the successful (complete) closure of an oro-antral communication (RR 1.00, 95% Cl 0.83 to 1.20) one month after the surgery. All oro-antral communications in both groups were successfully closed so there were no adverse effects due to treatment failure.We did not find trials evaluating any other intervention for treating oro-antral communications or fistulae due to dental procedures.

    AUTHORS' CONCLUSIONS: We found very low quality evidence from a single small study that compared pedicled buccal fat pad and buccal flap. The evidence was insufficient to judge whether there is a difference in the effectiveness of these interventions as all oro-antral communications in the study were successfully closed by one month after surgery. Large, well-conducted RCTs investigating different interventions for the treatment of oro-antral communications and fistulae caused by dental procedures are needed to inform clinical practice.

    Matched MeSH terms: Adipose Tissue/transplantation*; Surgical Flaps/transplantation*
  19. Tissue-Engineered Skin Substitute Enhances Wound Healing after Radiation Therapy
    Busra MF, Chowdhury SR, bin Ismail F, bin Saim A, Idrus RB
    Adv Skin Wound Care, 2016 Mar;29(3):120-9.
    PMID: 26866868 DOI: 10.1097/01.ASW.0000480556.78111.e4
    OBJECTIVE: When given in conjunction with surgery for treating cancer, radiation therapy may result in impaired wound healing, which, in turn, could cause skin ulcers. In this study, bilayer and monolayer autologous skin substitutes were used to treat an irradiated wound.

    MATERIALS AND METHODS: A single dose of 30 Gy of linear electron beam radiation was applied to the hind limb of nude mice before creating the skin lesion (area of 78.6 mm). Monolayer tissue-engineered skin substitutes (MTESSs) were prepared by entrapping cultured keratinocytes in fibrin matrix, and bilayer tissue-engineered skin substitutes (BTESSs) were prepared by entrapping keratinocytes and fibroblasts in separate layers. Bilayer tissue-engineered skin substitute and MTESS were implanted to the wound area. Gross appearance and wound area were analyzed to evaluate wound healing efficiency. Skin regeneration and morphological appearance were observed via histological and electron microscopy. Protein expressions of transforming growth factor β1 (TGF-β1), platelet-derived growth factor BB (PDGF-BB), and vascular endothelial growth factor (VEGF) in skin regeneration were evaluated by immunohistochemistry (IHC).

    RESULTS: Macroscopic observation revealed that at day 13, treatments with BTESS completely healed the irradiated wound, whereas wound sizes of 1.1 ± 0.05 and 6.8 ± 0.14 mm were measured in the MTESS-treated and untreated control groups, respectively. Hematoxylin-eosin (H&E) analysis showed formation of compact and organized epidermal and dermal layers in the BTESS-treated group, as compared with MTESS-treated and untreated control groups. Ultrastructural analysis indicates maturation of skin in BTESS-treated wound evidenced by formation of intermediate filament bundles in the dermal layer and low intercellular space in the epidermal layer. Expressions of TGF-β1, PDGF-BB, and VEGF were also higher in BTESS-treated wounds, compared with MTESS-treated wounds.

    CONCLUSIONS: These results indicate that BTESS is the preferred treatment for irradiated wound ulcers.

    Matched MeSH terms: Skin Transplantation; Cell Transplantation/methods
  20. Use of bovine xenograft in reconstruction of traumatic anterior cranial fossa bone defects involving the frontal sinus
    Abdullah J, Rushdan A, Hamzah M, Ariff AR, Rani A
    Ann. Transplant., 1999;4(3-4):28-31.
    PMID: 10853777
    Four patients underwent reconstruction of anterior cranial fossa of skull defects between November 1997 and January 1998. All of them had traumatic anterior cranial fossa defect and were reconstructed with lyophilised bovine cortical bone graft. There was no cerebrospinal fluid leakage, meningitis, extradural abscess or other infections. This study demonstrates that the use of bovine bone graft in the reconstruction of anterior base defects is safe.
    Matched MeSH terms: Transplantation, Heterologous; Bone Transplantation/methods*
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