MyMedR

Displaying all 4 publications

Abstract:

Sort:

Fulltext Occupational performance of the primary schoolchildren with special education needs in Malaysia: exploring the needs of school-based therapy service

Khin, Nyein Yin, Fatimah Ahmedy, Dayang Maryama Ag. Daud, Helen Lasimbang, Voo, Siew Ching, Chin Suliong, et al.

Borneo Journal of Medical Sciences, 2021;15(2):21-33.
MyJurnal

Children’s occupational performance are activities of daily living, play/ leisure, social participation, education, and work. In developed countries, school-based therapy services are being provided for schoolchildren with special needs. The importance of these services in Malaysia is timely to be explored. This exploratory cross-sectional study identified occupational performance levels of primary schoolchildren with special needs in integrated special education programmes in Malaysia; children with intellectual disability, autism, attention deficit hyperactive disorder, Down syndrome, speech impairment, visual impairment, hearing impairment, and specific learning disorder. Researchers conducted Motor-Free Visual Perceptual Test Third Edition (MVPT-3), Beery-Buktenica Developmental Test of Visual-Motor Integration Fifth Edition (Beery-VMI), Test of Gross Motor Development – 2 (TGMD-2), Test of Hand Writing Skills-Revised (THS-R), and School Function Assessment (SFA) for 121 students. Results showed that 69.5% of the students scored very low to low average in MVPT-3 (median standard score = 70.0, Std. IQR = 37); 69.4% were very low to below average in Beery-VMI (mean standard score = 78.8, Std. deviation = 20.5); 73% were below age level raw score in TGMD-2; 72.8% were below average in THS-R (median standard score = 74.0, Std. IQR = 27.0); and 81% were below the criterion cut-off in school function. The children with below-normal MVPT, VMI, TGMD2, and THS scores, compared to the children with normal scores for these tests had significantly lower scores (p < 0.001). All the students had impairment in occupation performance at least in one area. This study recommends school-based occupational therapy and other rehabilitation services in the school system in Malaysia.
Fulltext Spinal Cord Injury: Pathophysiology, Multimolecular Interactions, and Underlying Recovery Mechanisms

Anjum A, Yazid MD, Fauzi Daud M, Idris J, Ng AMH, Selvi Naicker A, et al.

Int J Mol Sci, 2020 Oct 13;21(20).
PMID: 33066029 DOI: 10.3390/ijms21207533

Spinal cord injury (SCI) is a destructive neurological and pathological state that causes major motor, sensory and autonomic dysfunctions. Its pathophysiology comprises acute and chronic phases and incorporates a cascade of destructive events such as ischemia, oxidative stress, inflammatory events, apoptotic pathways and locomotor dysfunctions. Many therapeutic strategies have been proposed to overcome neurodegenerative events and reduce secondary neuronal damage. Efforts have also been devoted in developing neuroprotective and neuro-regenerative therapies that promote neuronal recovery and outcome. Although varying degrees of success have been achieved, curative accomplishment is still elusive probably due to the complex healing and protective mechanisms involved. Thus, current understanding in this area must be assessed to formulate appropriate treatment modalities to improve SCI recovery. This review aims to promote the understanding of SCI pathophysiology, interrelated or interlinked multimolecular interactions and various methods of neuronal recovery i.e., neuroprotective, immunomodulatory and neuro-regenerative pathways and relevant approaches.
Fulltext Protocol paper: kainic acid excitotoxicity-induced spinal cord injury paraplegia in Sprague-Dawley rats

Anjum A, Cheah YJ, Yazid MD, Daud MF, Idris J, Ng MH, et al.

Biol Res, 2022 Dec 09;55(1):38.
PMID: 36494836 DOI: 10.1186/s40659-022-00407-0

BACKGROUND: Excitotoxicity-induced in vivo injury models are vital to reflect the pathophysiological features of acute spinal cord injury (SCI) in humans. The duration and concentration of chemical treatment controls the extent of neuronal cell damage. The extent of injury is explained in relation to locomotor and behavioural activity. Several SCI in vivo methods have been reported and studied extensively, particularly contusion, compression, and transection models. These models depict similar pathophysiology to that in humans but are extremely expensive (contusion) and require expertise (compression). Chemical excitotoxicity-induced SCI models are simple and easy while producing similar clinical manifestations. The kainic acid (KA) excitotoxicity model is a convenient, low-cost, and highly reproducible animal model of SCI in the laboratory. The basic impactor approximately cost between 10,000 and 20,000 USD, while the kainic acid only cost between 300 and 500 USD, which is quite cheap as compared to traditional SCI method.
METHODS: In this study, 0.05 mM KA was administered at dose of 10 µL/100 g body weight, at a rate of 10 µL/min, to induce spinal injury by intra-spinal injection between the T12 and T13 thoracic vertebrae. In this protocol, detailed description of a dorsal laminectomy was explained to expose the spinal cord, following intra-spinal kainic acid administration at desired location. The dose, rate and technique to administer kainic acid were explained extensively to reflect a successful paraplegia and spinal cord injury in rats. The postoperative care and complication post injury of paraplegic laboratory animals were also explained, and necessary requirements to overcome these complications were also described to help researcher.
RESULTS: This injury model produced impaired hind limb locomotor function with mild seizure. Hence this protocol will help researchers to induce spinal cord injury in laboratories at extremely low cost and also will help to determine the necessary supplies, methods for producing SCI in rats and treatments designed to mitigate post-injury impairment.
CONCLUSIONS: Kainic acid intra-spinal injection at the concentration of 0.05 mM, and rate 10 µL/min, is an effective method create spinal injury in rats, however more potent concentrations of kainic acid need to be studied in order to create severe spinal injuries.
Long-term evaluation of osteoarthritis sheep knee, treated with TGF-β3 and BMP-6 induced multipotent stem cells

Ude CC, Shamsul BS, Ng MH, Chen HC, Ohnmar H, Amaramalar SN, et al.

Exp Gerontol, 2018 04;104:43-51.
PMID: 29421350 DOI: 10.1016/j.exger.2018.01.020

BACKGROUND: Hyaline articular cartilage, which protects the bones of diarthrodial joints from forces associated with load bearing, frictions, and impacts has very limited capacities for self-repair. Over the years, the trend of treatments has shifted to regenerations and researchers have been on the quest for a lasting regeneration. We evaluated the treatment of osteoarthritis by chondrogenically induced ADSCs and BMSCs for a long time functional recovery.
METHODS: Osteoarthritis was induced at the right knee of sheep by complete resection of ACL and medial meniscus. Stem cells from sheep were induced to chondrogenic lineage. Test sheep received 5 mls single doses of 2 × 107 autologous PKH26-labelled ADSCs or BMSCs, while controls received basal medium. Functional recovery of the knees was evaluated via electromyography.
RESULTS: Induced ADSCs had 625, 255, 393, 908, 409, 157 and 1062 folds increases of collagen I, collagen II, aggrecan, SOX9, cartilage oligomeric protein, chondroadherin and fibromodullin compare to uninduced cells, while BMSCs had 702, 657, 321, 276, 337, 233 and 1163 respectively; p = .001. Immunocytochemistry was positive for these chondrogenic markers. 12 months post-treatment, controls scored 4 in most regions using ICRS, while the treated had 8; P = .001. Regenerated cartilages were positive to PKH26 and demonstrated the presence of condensing cartilages on haematoxylin and eosin; and Safranin O. OA degenerations caused significant amplitude shift from right to left hind limb. After treatments, controls persisted with significant decreases; while treated samples regained balance.
CONCLUSIONS: Both ADSCs and BMSCs had increased chondrogenic gene expressions using TGF-β3 and BMP-6. The treated knees had improved cartilage scores; PKH26 can provide elongated tracking, while EMG results revealed improved joint recoveries. These could be suitable therapies for osteoarthritis.