1.Species composition and pyrethroid susceptibility status of Anopheles mosquitoes from two different locations in Malaysia
Tropical Biomedicine 2013;30(1):125-130
A 14-months survey was carried out to identify the species composition of Anopheles
mosquitoes from Kampung Bongor, Grik, Perak. Adding to that, a preliminary one month
mosquito population screening was done at Kampung Tepin, Serian, Sarawak. Consequently,
the insecticide susceptibility status of a pyrethroid was tested against two selected species
of Anopheles collected from these two locations in Malaysia. A total of 4,497 Anopheles from
11 species were identified from collections in Kampung Bongor, whereas 2,654 An. letifer
were collected from Kampung Tepin. The An. maculatus of Kampung Bongor and An. letifer
of Kampung Tepin were then selected and tested using WHO standard diagnostic test kits and
impregnated papers with 0.75% permethrin. The response values of KT50 and KT95 for An.
maculatus were recorded at 28.09 minutes and 62.98 minutes respectively. Anopheles letifer
recorded much slower response values of KT50 and KT95, which was at 35.09 minutes and
73.03 minutes respectively. Both An. maculatus and An. letifer showed 100% mortality after
24 hours holding period. The results indicate that both species were still susceptible to the
tested pyrethroid. For effective vector control and resistance management, accurate and
periodic insecticide resistance monitoring should be undertaken especially in rural areas
with agricultural usage of insecticides.
2.Complication after senning operation for TGA with and without VSD.
Jae Ho AHN ; C J Knott CRAIG ; Ronald ELKINS
The Korean Journal of Thoracic and Cardiovascular Surgery 1993;26(8):595-603
No abstract available.
3.Descending aorta index and pulmonary artery index in infants:comparison between atrioventricular septal defects, atrial septal defects and ventricular septal defects.
Jae Ho AHN ; C J Knott CRAIG ; Ronald ELKINS
The Korean Journal of Thoracic and Cardiovascular Surgery 1993;26(8):591-594
No abstract available.
Aorta, Thoracic*
;
Heart Septal Defects, Atrial*
;
Heart Septal Defects, Ventricular*
;
Pulmonary Artery*
4.Immunomodulatory Effects of Vitamin D Analogues in Psoriatic Skin.
Gregory J BEZANIS ; Jee Ho CHOI ; Se Won KANG
Annals of Dermatology 2001;13(4):201-204
Psoriasis is an inflammatory skin disease characterized by hyperproliferation and incomplete differentiation of keratinocytes. Mounting scientific evidence suggests that this epidermal alteration occurs as a response to an immunologic injury, giving rise to the concept that psoriasis is a skin-specific autoimmune disease. Indeed, many effective therapeutic agents for psoriasis are immunosuppressive in nature, lending further support to this view. The well known ability of calcipotriene and 1,25(OH)2D3 to inhibit keratinocyte proliferation and to induce its differentiation is certainly compatible with their antipsoriatic actions. In addition, topical calcipotriene has been shown to correct, at least in part, the local cytokine imbalance observed in psoriatic lesions. Interleukin (IL)-8 is a proinflammatory cytokine that is chemotactic for polymorphonuclear cells and T lymphocytes. It also promotes proliferation of keratinocytes and endothelial cells. In lesional psoriatic skin, IL-8 and its receptor levels are markedly elevated. IL-10 is an immunosuppressive cytokine, which as a type2 (T2) cytokine antagonizes cell-mediated immunity. Indeed, IL-10 administration has been shown to improve psoriasis. Topical calcipotriene markedly reduces elevated levels of IL-8 while simultaneously increasing IL-10 levels in lesional skin of psoriasis. These changes occur very early, within the first three days of therapy, prior to significant clinical improvement of psoriasis, indicating that the cytokine alterations are not simply secondary to resolution of psoriatic plaques. Therefore, elaboration of the immunosuppressive cytokine IL-10 and a concomitant reduction in the proinflammatory cytokine IL-8 may mediate the immunopharmacological improvementin psoriasis by calcipotriene.
Autoimmune Diseases
;
Cholecalciferol
;
Cytokines
;
Endothelial Cells
;
Immunity, Cellular
;
Immunosuppression
;
Interleukin-10
;
Interleukin-8
;
Interleukins
;
Keratinocytes
;
Psoriasis
;
Skin Diseases
;
Skin*
;
T-Lymphocytes
;
Vitamin D*
;
Vitamins*
5.Complementary And Alternative Medicine Use Among Breast Cancer Patients In A Tertiary Hospital In Malaysia
Raja Lexshimi RG ; Oranye NO ; Ho SE ; Zuraida J ; Zulkifli SZ
Malaysian Journal of Public Health Medicine 2013;13(1):11-19
The Use of Complementary and alternative medicine (CAM) is a common phenomenon among women with breast cancer in Malaysia. This study examines the prevalence, types, influencing factors and source of information regarding CAM among women with breast cancer, using a cross sectional research design. A purposive sampling was used to recruit 103 women with breast cancer who were attending follow up care at the Radiotherapy and Oncology unit of Universiti Kebangsaan Malaysia Medical Centre. Data was gathered through the use of self–administered questionnaires. Ninety one women identified themselves as CAM users while twelve were non users. Among the CAM users, 57(62.6%) were Malays, 27(29.7%) Chinese and 7(7.7%) Indians. The common types of CAM used were vitamins, nutritional supplements and traditional medicines (TM). CAM was used more frequently upon diagnosis (63.7%) and after completion of conventional treatment (97.8%). With regard to decision-making, most of the women (62.6%) did not make the decision to use CAM and were mostly influenced by their husband and mother (67%). Mother (71.4%), husband (67%), and relatives (56%) were the main sources of information and all values showed significant association with CAM use (p<0.05). Prevalence of CAM use, especially TM, was high among the Malay and Chinese ethnic groups. The lack of autonomy in decision-making by the women was the major reason for the use of CAM. The effectiveness and safety of using TM upon diagnosis and in combination with conventional cancer treatment are of concern to the breast surgeons, oncologist and the health care team.
6.Gastrointestinal Cytomegalovirus infection in non-human immunodeficiency virus infected patients.
Ng KL ; Ho J ; Ng HS ; Luman W
The Medical Journal of Malaysia 2003;58(3):337-344
This is a retrospective study of fourteen patients who had proven Cytomegalovirus (CMV) infection of the gastrointestinal tract with no Human Immunodeficiency virus infection. The median age was 60.5 (Range 28 to 81) years. Eight patients were below (Group 1) and six above sixty five years old (Group 2). Areas of gastro-intestinal involvement were: oesophagus (2), stomach (1), colon (10) and multiple sites (1). Seven patients from Group 1 had received immunosuppressive therapy at the time of presentation and one had diabetes mellitus. We found a high prevalence of co-morbidities such as chronic renal failure and diabetes mellitus in Group 2. At median follow up of 13.9 months, there was a mortality rate of 50%. Only four patients were treated with ganciclovir. Our study concludes that the gastrointestinal CMV diseases in young patients were associated with immunosuppression whereas the older patients had chronic renal failure or diabetes.
Cytomegalovirus Infections/*immunology
;
Gastrointestinal Diseases/*virology
;
HIV Infections
;
*Immunocompetence
;
Retrospective Studies
7.Postnatal Urinary Incontinence: Prevalence and Factors Associated with It in a Malaysian Population
Dariah My ; Lily X ; Belan I ; Paterson J ; Ho SE ; Christopher Ck HO
Medicine and Health 2014;9(1):22-32
The aim of this study was to investigate the prevalence of postnatal urinary incontinence (PNUI), the risk factors associated with it and postnatal women’s (PN) level of engagement in practicing traditional Malay confinement care (TMCC) in Kelantan, Malaysia. A cross-sectional survey was conducted among 362 postnatal women aged between 18 – 45 years and who were between three to five months post-delivery. Participants were selected through convenience sampling at six Maternal and Child Health Clinics located in comparatively similar districts.
Descriptive and inferential analyses including, factor analysis, Pearson chi-square, Mann-Whitney U test and logistic regressions analysis were used for data analysis.
Overall, PNUI was reported by 80 women (22.1%). Vaginal delivery was associated with PNUI. All PN women within the study context practiced TMCC. The findings revealed that women who had PNUI were more likely to engage in a higher level of the ‘Body care’ component of TMCC. UI is prevalent among PN women in Kelantan, Malaysia. Further research into the impact of the ‘body care’ component
of TMCC on PNUI is required.
Urinary Incontinence
8.Dabigatran approaching the realm of heparin-induced thrombocytopenia.
Patricia J HO ; Juan A SIORDIA
Blood Research 2016;51(2):77-87
Heparin-induced thrombocytopenia (HIT) is a serious, immune mediated complication of exposure to unfractionated or low-molecular-weight heparin. Though rare, it is a condition associated with high morbidity and mortality that requires immediate change to alternative anticoagulants for the prevention of life-threatening thrombosis. The direct thrombin inhibitors lepirudin and argatroban are currently licensed for the treatment of HIT. Dabigatran, a novel oral anticoagulant (NOAC) with a similar mechanism of action and effective use in other indications, has recently been proposed as another therapeutic option in cases of HIT. This review serves as an introduction to using dabigatran for this purpose, detailing the clinical aspects of its administration, evidence of its performance compared to other anticoagulants, and the preliminary reports of HIT successfully treated with dabigatran. As the literature on this develops, it will need to include clinical trials that directly evaluate dabigatran against the other NOACs and current treatment options.
Anticoagulants
;
Antithrombins
;
Dabigatran*
;
Heparin, Low-Molecular-Weight
;
Mortality
;
Thrombocytopenia*
;
Thrombosis
9.Identification of Retroviral Vectors Producing High Viral Titer.
Yong Jae SHIN ; Michael J LENARDO ; Tae Kyu PARK ; Kwang Ho LEE
Journal of the Korean Society of Virology 1999;29(1):33-38
Retroviral vector provide a highly efficient method for gene transfer into eukaryotic cells. This vector system can be divided into two components; the retroviral vector itself and the retroviral packaging cell line. The key improvement in the design of these two components are. focused on two aspects; the reduction of helper virus production and high titer-virus. We used PA317 for retrovirus packaging cell line, for its high producibility of viral titer, To test the ability of the vectors to generate high titer-virus, we have chosen four different retroviral vectors; LN, LNSX, LNCX and LXSN. To test easily the viral titer, we have made recombinant construction with CD4 and CD8, checked their viral titer and stained their surface expression. LXSN which contain SV40 early promoter in front of leo gene showed best results in viral transient transfection assay, dot blot assay and surface expression. In addition, recombinant containing CD8 generally showed much higher viral titration and surface expression than CD4.
Cell Line
;
Eukaryotic Cells
;
Helper Viruses
;
Product Packaging
;
Retroviridae
;
Transfection
;
Zidovudine*
10.Correlation between p53 Immunohistochemical Expression, DNA Ploidy and Ki-67 Expression in Gastric Carcinoma.
Young Lyun OH ; Joung Ho HAN ; Young Hyeh KO ; Cheol Keun PARK ; Hwoe J REE
Korean Journal of Pathology 1997;31(12):1264-1271
We examined the p53 protein overexpression and evaluated its correlation with pathobiological variables, including: (1) patient age, sex, tumor size, histological type and grade, invasion depth, vascular invasion, perineural invasion and lymph node status; (2) the Ki-67 labeling index in 100 gastric carcinomas; and (3) the DNA ploidy pattern, S phase fraction (SPF), and the proliferation index (PI) in 84 cases using flow cytometry. The positive rate of p53 staining was 48% and the p53 immunoreactivity was independent of variable clinicopathologic factors. No correlation was made between the Ki-67 labeling index with p53 immunostaining and DNA ploidy parameters. Aneuploidy rate was slightly higher in the p53 positive group (55.6%) than the p53 negative group (44.4%)(p=0.097). The mean values of SPF and PI were significantly higher in the p53 protein positive group. Aneuploidy was more often observed in the intestinal type (p=0.038), advanced gastric carcinoma (p=0.015) and lymph node positive group(p=0.039). The above results suggest that although the p53 protein overexpression has no significant correlation with pathological factors and the Ki-67 labeling index, it may play an important role in tumor cell proliferation. Since p53 protein overexpression was slightly higher in the aneuploidy group showing significant correlation with poor prognostic parameters, it is thought that re-evaluation of the p53 mutation by molecular biological study is needed.
Aneuploidy
;
Cell Proliferation
;
DNA*
;
Flow Cytometry
;
Humans
;
Lymph Nodes
;
Ploidies*
;
S Phase