MyMedR

Fulltext Recalcitrant post-traumatic chronic osteomyelitis/infected non-union of the tibia following open grade-ill fractures: treatment with vascularized osteocutaneous fibular graft

Halim AS, Imran Y

Med J Malaysia, 2006 Feb;61 Suppl A:66-70.

PMID: 17042234

Post-traumatic chronic osteomyelitis and infected non-unions of the tibia following severe type-III open fracture are difficult to treat Refractoy cases often necessitate amputation despite attempts to salvage the limb. We report our experience in treating such difficult cases with an alternative surgical option using free osteocutaneous fibular graft. Eight consecutive patients with post-traumatic chronic osteomyelitis/infected non-union were treated surgically with free vascularized osteocutaneous fibular graft. Outcomes in term of graft-host union and complication were evaluated. Four patients had anastomotic venous thrombosis requiring anastomotic revision. Five patients developed surgical site infections needing extended antibiotic therapy to achieve resolution at an average of 15.2 weeks. Fibular graft fracture occurred in three patients but all grafts survived and united after a mean time to union of 42.3 weeks (range 31 to 82 weeks). At the final follow-up, union of host-graft junction and control of infection were achieved in all patients except one who required a secondary amputation. Free vascularized osteo-cutaneous fibular graft is a viable limb salvage option for refractory chronic osteomyelitis or infected non-union following treatment of grade-III open tibial fractures.

Matched MeSH terms: Chronic Disease

Epidermal growth factor receptor targeted therapy with gefitinib in locally advanced and metastatic primary lung adenocarcinoma

Liam CK, Pang YK, Leow CH

Respirology, 2006 May;11(3):287-91.

PMID: 16635086

To describe the efficacy of monotherapy with the epidermal growth factor receptor-tyrosine kinase inhibitor, gefitinib in patients with locally advanced and metastatic primary lung adenocarcinoma.

Matched MeSH terms: Disease Progression

Fulltext Rhino-orbito-cerebral mucormycosis: a treatment dilemma

Jeevanan J, Gendeh BS, Faridah HA, Vikneswaran T

Med J Malaysia, 2006 Mar;61(1):106-8.

PMID: 16708746 MyJurnal

A case of rhino-orbito-cerebral mucormycosis is presented showing its aggressive nature and progression of disease. The typical clinical features, neuroimaging and histological findings are highlighted in this report. Amphotericin B and surgical debridement remain the mainstay of treatment. However, associated co-morbidities need to be addressed.

Matched MeSH terms: Disease Progression

Fulltext In-vitro activity of quinupristin/dalfopristin, levofloxacin and moxifloxacin against fusidic acid and rifampicin-resistant strains of methicillin-resistant Staphylococcus aureus (MRSA) from Malaysian hospitals

Norazah A, Lim VKE, Rohani MY, Kamel AGM

Med J Malaysia, 2005 Oct;60(4):411-5.

PMID: 16570701

The in-vitro susceptibility of quinupristin/dalfopristin, levofloxacin and moxifloxacin against methicillin-resistant Staphylococcus aureus (MRSA) strains, which are also resistant to fusidic acid and rifampicin were carried out to determine whether these antibiotics can be used as an alternative treatment for multiply resistant MRSA strains. The minimum inhibitory concentrations (MIC) of these antibiotics were determined by E-test. Quinupristin/dalfopristin had good activity (MIC90 = 1 mg/L) against these strains while most of the strains showed intermediate resistance to moxifloxacin with MIC90 = 2 mg/L). However, more than 90% of these strains were resistant to levofloxacin with the MICs that ranged from 8 mg/L to 16 mg/L with the majority inhibited at 8 mg/L.

Matched MeSH terms: Disease Susceptibility

Blunted endogenous GABA-mediated inhibition in the hypothalamic paraventricular nucleus of rats with streptozotocin-induced diabetes

Hassan Z, Sattar MZ, Suhaimi FW, Yusoff NH, Abdulla MH, Yusof AP, et al.

Acta Neurol Belg, 2013 Sep;113(3):319-25.

PMID: 23242937 DOI: 10.1007/s13760-012-0165-3

The hypothalamic paraventricular nucleus (PVN) is involved in the regulation of sympathetic outflow and particularly affects the heart. This study sets out to determine the role of GABA of the paraventricular nucleus (PVN) in cardiovascular regulation in streptozotocin-induced diabetic rats. Pharmacological stimulation of glutamatergic receptors with DL-Homocysteic acid (200 mM in 100 nL) in the PVN region showed a significant depression in both mean arterial pressure (MAP) and heart rate (HR) of diabetic rats (Diabetic vs. non-diabetic: MAP 15.0 ± 1.5 vs. 35.8 ± 2.8 mmHg; HR 3.0 ± 2.0 vs. 30.0 ± 6.0 bpm, P < 0.05). Microinjection of bicuculline methiodide (1 mM in 100 nL), a GABAA receptor antagonist, produced an increase in baseline MAP and HR in both non-diabetic and diabetic rats. In the diabetic rats, bicuculline injection into the PVN reduced the pressor and HR responses (Diabetic vs. non-diabetic: MAP 6.2 ± 0.8 vs. 25.1 ± 2.2 mmHg; HR 1.8 ± 1.1 vs. 25.4 ± 6.2 bpm, P < 0.05). A microinjection of muscimol (2 mM in 100 nL), which is a GABAA receptor agonist, in the PVN elicited decreases in MAP and HR in both groups. The diabetic group showed a significantly blunted reduction in HR, but not MAP (Diabetic vs. non-diabetic: MAP -15.7 ± 4.0 vs. -25.0 ± 3.8 mmHg; HR -5.2 ± 2.1 vs. -39.1 ± 7.9 bpm). The blunted vasopressor and tachycardic responses to bicuculline microinjection in the diabetic rats are likely to result from decreased GABAergic inputs, attenuated release of endogenous GABA or alterations in GABAA receptors within the PVN.

Matched MeSH terms: Disease Models, Animal

From Kratom to mitragynine and its derivatives: physiological and behavioural effects related to use, abuse, and addiction

Hassan Z, Muzaimi M, Navaratnam V, Yusoff NH, Suhaimi FW, Vadivelu R, et al.

Neurosci Biobehav Rev, 2013 Feb;37(2):138-51.

PMID: 23206666 DOI: 10.1016/j.neubiorev.2012.11.012

Kratom (or Ketum) is a psychoactive plant preparation used in Southeast Asia. It is derived from the plant Mitragyna speciosa Korth. Kratom as well as its main alkaloid, mitragynine, currently spreads around the world. Thus, addiction potential and adverse health consequences are becoming an important issue for health authorities. Here we reviewed the available evidence and identified future research needs. It was found that mitragynine and M. speciosa preparations are systematically consumed with rather well defined instrumentalization goals, e.g. to enhance tolerance for hard work or as a substitute in the self-treatment of opiate addiction. There is also evidence from experimental animal models supporting analgesic, muscle relaxant, anti-inflammatory as well as strong anorectic effects. In humans, regular consumption may escalate, lead to tolerance and may yield aversive withdrawal effects. Mitragynine and its derivatives actions in the central nervous system involve μ-opioid receptors, neuronal Ca²⁺ channels and descending monoaminergic projections. Altogether, available data currently suggest both, a therapeutic as well as an abuse potential.

Matched MeSH terms: Disease Models, Animal

Brugia malayi infection in Meriones unguiculatus: antibody response to recombinant BmR1

Lim BH, Noordin R, Nor ZM, Rahman RA, Abdullah KA, Sinnadurai S

Exp Parasitol, 2004 Sep-Oct;108(1-2):1-6.

PMID: 15491542

BmR1 recombinant antigen has previously been shown to demonstrate high sensitivity and specificity in the serological diagnosis of brugian filariasis in humans. In this study, the pattern of recognition of antibody to BmR1 during Brugia malayi infection was investigated by employing Meriones unguiculatus as the experimental model. Thirty two gerbils were infected subcutaneously with 120 L(3); and two control groups each comprising 25 animals were employed. ELISA using BmR1 was used to detect filaria-specific IgG antibodies elicited by the gerbils; using sera collected from the day 1 until day 150 post-inoculation (p.i.). The results showed that BmR1 detected B. malayi infection in gerbils harboring adult worms irrespective of the presence of circulating microfilaria, and was exemplified by positive ELISA results in nine a microfilaraemic animals that harbored live adult worms. The initial time of the antibody recognition was at day 8 p.i. and the antibody titre showed some correlation with adult worm burden.

Matched MeSH terms: Disease Models, Animal

The effects of age on monolayer culture of human keratinocytes for future use in skin engineering

Muhd Fakhruddin BH, Aminuddin BS, Mazlyzam AL, Ruszymah BH

Med J Malaysia, 2004 May;59 Suppl B:182-3.

PMID: 15468878

Skin is the largest organ in human system and plays a vital role as a barrier against environment and pathogens. Skin regeneration is important in tissue engineering especially in cases of chronic wounds. With the tissue engineering technology, these skins equivalent have been use clinically to repair burns and wounds. Consented redundant skin samples were obtained from patients aged 9 to 65 years old. Skin samples were digested with dispase, thus separating the epidermis and the dermis layer. The epidermis layer was trypsinized and cultured in DKSFM in 6-well plate at 37 degrees C and 5% CO2. Once confluent, the culture were trypsinized and the cells were pooled. Cells were counted using haemacytometer. Doubling time and viability were calculated and analysed. From the result, we conclude that doubling time and viability of in vitro keratinocytes cultured in DKSFM media is not age dependant.

Matched MeSH terms: Chronic Disease

Cytogenetic abnormalities in de novo acute myeloid leukemia in adults: relation to morphology, age, sex and ethnicity - a single center study from Singapore

Enjeti AK, Tien SL, Sivaswaren CR

Hematol. J., 2004;5(5):419-25.

PMID: 15448668

Cytogenetic analysis performed at diagnosis is considered to be the most valuable prognostic factor in acute myeloid leukemia (AML). Large systematic studies of cytogenetic abnormalities in AML patients from Southeast Asia are not available. The karyotypic patterns in AML patients from a single center in Singapore were studied and compared with reports from other regions of the world to identify possible geographic heterogeneity.

Matched MeSH terms: Acute Disease

Piper sarmentosum is comparable to glycyrrhizic acid in reducing visceral fat deposition in adrenalectomised rats given dexamethasone

Fairus A, Ima Nirwana S, Elvy Suhana MR, Tan MH, Santhana R, Farihah HS

Clin Ter, 2013;164(1):5-10.

PMID: 23455734 DOI: 10.7417/CT.2013.1502

Visceral obesity may be due to the dysregulation of cortisol production or metabolism that lead to metabolic disease. In adipose tissue, the enzyme 11beta-hydroxysteroid dehydrogenase type 1 regulates cortisol metabolism (11beta-HSD1). A previous study showed an increase in the visceral fat deposition in adrenalectomised rats given intramuscular dexamethasone. Glycyrrhizic acid (GCA) has been shown to reduce fat deposition because it is a known potent inhibitor of the 11beta-HSD1 enzyme. Piper sarmentosum (PS) is an edible medicinal plant commonly used in Asia as traditional medicine for treating diabetes, hypertension and joint pains. In this study, we determined the effects of PS extract on the disposition and morphology of perirenal adipocytes of adrenalectomised rats given intramuscular dexamethasone.

Matched MeSH terms: Disease Models, Animal

Fulltext Extensive dural sinus thrombosis and bilateral lateral rectus palsy as an uncommon complication of chronic suppurative otitis media

Balasubramanian A, Mohamad I, Sidek D

BMJ Case Rep, 2013;2013.

PMID: 23355565 DOI: 10.1136/bcr-2012-007414

Dural venous sinus thrombosis, especially of the sigmoid sinus, is a known but uncommon intracranial extradural complication of chronic suppurative otitis media. Even rarer is the simultaneous occurrence of bilateral abducens palsy in the same patient. We report the case of an adolescent male who presented with signs of raised intracranial pressure, diplopia and bilateral lateral rectus palsy associated with a history of left ear discharge and neck swelling. Extensive dural sinus thrombosis extending right up to the left internal jugular vein was confirmed on CT imaging. The patient was successfully treated with thrombolytic agents and antibiotic therapy. The pathophysiology of the concurrent complications is discussed.

Matched MeSH terms: Chronic Disease

Anti-inflammatory, analgesic and anti-ulcerogenic effect of total alkaloidal extract from Murraya koenigii leaves in animal models

Mani V, Ramasamy K, Abdul Majeed AB

Food Funct, 2013 Apr 25;4(4):557-67.

PMID: 23360913 DOI: 10.1039/c3fo30356j

The fresh leaves of Murraya koenigii are often added to various dishes in Asian countries due to the delicious taste and flavour that they impart. In the present study, the effect of the total alkaloidal extract from Murraya koenigii leaves (MKA) with respect to anti-inflammatory, analgesic and anti-ulcerogenic effects were evaluated using different experimental animal models. Oral supplementation of MKA at 10, 20 and 40 mg kg(-1) body weight successfully and dose-dependently reduced the formation of oedema induced by carrageenan, histamine and serotonin as well as formaldehyde-induced arthritis. In addition, the extract (10, 20 and 40 mg kg(-1), p.o.) attenuated the writhing responses induced by an intraperitoneal injection of acetic acid and late phase of pain response induced by a subplantar injection of formalin in mice. MKA at higher doses (20 and 40 mg kg(-1), p.o) reduced the early phase response induced by formalin as well as reaction time on hot plate models. Interestingly, there was no ulcer score with the ulcerogenic effect of MKA. Moreover, all the doses of MKA (10, 20 and 40 mg kg(-1), p.o) showed promising anti-ulcerogenic activity with protection against acute gastric ulcers induced by ethanol plus hydrochloric acid and aspirin models in a dose dependent manner.

Matched MeSH terms: Disease Models, Animal

Impact of glaucoma severity and laterality on vision-specific functioning: the Singapore Malay eye study

Chan EW, Chiang PP, Wong TY, Saw SM, Loon SC, Aung T, et al.

Invest Ophthalmol Vis Sci, 2013 Feb;54(2):1169-75.

PMID: 23341009 DOI: 10.1167/iovs.12-10258

We determined the impact of glaucoma severity and laterality on vision-specific functioning (VF) in an Asian population.

Matched MeSH terms: Disease Progression

Association between vitamin A, vitamin E and apolipoprotein E status with mild cognitive impairment among elderly people in low-cost residential areas

Shahar S, Lee LK, Rajab N, Lim CL, Harun NA, Noh MF, et al.

Nutr Neurosci, 2013 Jan;16(1):6-12.

PMID: 23321337 DOI: 10.1179/1476830512Y.0000000013

The influence of nutritional parameters and genetic susceptibility on poor cognitive impairment has been documented; however, the association between lipid-soluble vitamins with genetic susceptibility on mild cognitive impairment (MCI) has not yet been studied extensively.

Matched MeSH terms: Genetic Predisposition to Disease

Focal non-typhoidal Salmonella infections from a single center in Malaysia

Lee WS, Hafeez A, Hassan H, Raja NS, Puthucheary SD

Southeast Asian J. Trop. Med. Public Health, 2005 May;36(3):678-82.

PMID: 16124437

A retrospective review of patients with focal non-typhoidal Salmonella (NTS) infection was performed to determine its features and outcome. All patients with focal NTS infection admitted to the University of Malaya Medical Center, Malaysia, from 1993 to 2002 were studied. More than half (58%) of the 35 cases (54% male, median age 39 years, range 1.5 months to 79 years) were immunocompromized or had chronic medical conditions. One-third of the patients (34%) had superficial infections (lymphadenitis or subcutaneous tissue infection) and all recovered with antimicrobial therapy alone. Deep infections (66%) noted were: meningitis (9%), osteomyelitis or arthritis (26%), abscesses of the gastrointestinal tract or adjacent organs (20%), and others (11%). Deep infections were more likely to occur in the extremes of age (<6 months or >60 years, p< 0.04), associated with adverse outcomes with an overall mortality rate of 9%, or required major surgery (15%).

Matched MeSH terms: Chronic Disease

Human enterovirus 71 subgenotype B3 lacks coxsackievirus A16-like neurovirulence in mice infection

Chan YF, AbuBakar S

Virol J, 2005;2:74.

PMID: 16122396

At least three different EV-71 subgenotypes were identified from an outbreak in Malaysia in 1998. The subgenotypes C2 and B4 were associated with the severe and fatal infections, whereas the B3 virus was associated with mild to subclinical infections. The B3 virus genome sequences had >= 85% similarity at the 3' end to CV-A16. This offers opportunities to examine if there are characteristic similarities and differences in virulence between CV-A16, EV-71 B3 and EV-71 B4 and to determine if the presence of the CV-A16-liked genes in EV-71 B3 would also confer the virus with a CV-A16-liked neurovirulence in mice model infection.

Matched MeSH terms: Disease Outbreaks

Late-onset marrow aplasia due to imatinib in newly diagnosed chronic phase chronic myeloid leukaemia

Chng WJ, Tan LH

Leuk. Res., 2005 Jun;29(6):719-20.

PMID: 15863215

Matched MeSH terms: Chronic Disease

Fulltext New Peptide-Conjugated Chlorin-Type Photosensitizer Targeting Neuropilin-1 for Anti-Vascular Targeted Photodynamic Therapy

Kamarulzaman EE, Gazzali AM, Acherar S, Frochot C, Barberi-Heyob M, Boura C, et al.

Int J Mol Sci, 2015 Oct 12;16(10):24059-80.

PMID: 26473840 DOI: 10.3390/ijms161024059

Photodynamic therapy (PDT) is a cancer treatment modality that requires three components, namely light, dioxygen and a photosensitizing agent. After light excitation, the photosensitizer (PS) in its excited state transfers its energy to oxygen, which leads to photooxidation reactions. In order to improve the selectivity of the treatment, research has focused on the design of PS covalently attached to a tumor-targeting moiety. In this paper, we describe the synthesis and the physico-chemical and photophysical properties of six new peptide-conjugated photosensitizers designed for targeting the neuropilin-1 (NRP-1) receptor. We chose a TPC (5-(4-carboxyphenyl)-10,15, 20-triphenyl chlorine as photosensitizer, coupled via three different spacers (aminohexanoic acid, 1-amino-3,6-dioxaoctanoic acid, and 1-amino-9-aza-3,6,12,15-tetraoxa-10-on-heptadecanoic acid) to two different peptides (DKPPR and TKPRR). The affinity towards the NRP-1 receptor of the conjugated chlorins was evaluated along with in vitro and in vivo stability levels. The tissue concentration of the TPC-conjugates in animal model shows good distribution, especially for the DKPPR conjugates. The novel peptide-PS conjugates proposed in this study were proven to have potential to be further developed as future NRP-1 targeting photodynamic therapy agent.

Matched MeSH terms: Disease Models, Animal

Fulltext Clinico-laboratory spectrum of dengue viral infection and risk factors associated with dengue hemorrhagic fever: a retrospective study

Mallhi TH, Khan AH, Adnan AS, Sarriff A, Khan YH, Jummaat F

BMC Infect Dis, 2015 Sep 30;15:399.

PMID: 26423145 DOI: 10.1186/s12879-015-1141-3

BACKGROUND: The incidence of dengue is rising steadily in Malaysia since the first major outbreak in 1973. Despite aggressive measures taken by the relevant authorities, Malaysia is still facing worsening dengue crisis over the past few years. There is an urgent need to evaluate dengue cases for better understanding of clinic-laboratory spectrum in order to combat this disease.

METHODS: A retrospective analysis of dengue patients admitted to a tertiary care teaching hospital during the period of six years (2008 - 2013) was performed. Patient's demographics, clinical and laboratory findings were recorded via structured data collection form. Patients were categorized into dengue fever (DF) and dengue hemorrhagic fever (DHF). Appropriate statistical methods were used to compare these two groups in order to determine difference in clinico-laboratory characteristics and to identify independent risk factors of DHF.

RESULTS: A total 667 dengue patients (30.69 ± 16.13 years; Male: 56.7 %) were reviewed. Typical manifestations of dengue like fever, myalgia, arthralgia, headache, vomiting, abdominal pain and skin rash were observed in more than 40 % patients. DHF was observed in 79 (11.8 %) cases. Skin rash, dehydration, shortness of breath, pleural effusion and thick gall bladder were more significantly (P 40 years (OR: 4.1, P

Matched MeSH terms: Disease Outbreaks

Human topoisomerase II alpha as a prognostic biomarker in cancer chemotherapy

Ali Y, Abd Hamid S

Tumour Biol., 2016 Jan;37(1):47-55.

PMID: 26482620 DOI: 10.1007/s13277-015-4270-9

Topoisomerases are nuclear enzymes that regulate topology of DNA by facilitating the temporary cleavage and ligation cycle of DNA. Among all forms of topoisomerases, TOP-IIA is extensively associated with cell proliferation and therefore is an important therapeutic target in diseases that involved cellular proliferation such as cancers. Nearly half of present-day antitumor regimens contain at least one prescription that act as a topoisomerase inhibitor. Generally, tumor cells show divergent expression of TOP-IIA compared to normal cells. The remarkable expression of TOP-IIA in various carcinomas provides a significant biomarker toward understanding the nature of malignancy. TOP-IIA expression and amplification studies help in diagnosing cancer and to observe the disease progression, overall survival (OS) of patients, and response to therapy. This review highlights the research output and analysis in exploring the standing of TOP-IIA in various carcinomas. As some reports show contradiction within the same field of interest, the outline of that may help to induce researchers for further investigation and clarification. To the best of our knowledge, this is the first overview briefly summarizing the prognostic feature of TOP-IIA in various types of cancer.

Matched MeSH terms: Disease Progression

Displaying publications 4861 - 4880 of 5426 in total