2.Autonomic neuronal modulation of inflammation and its clinical significance
Chinese Journal of Pathophysiology 2000;0(10):-
Enormous progresses have been made in recent years for the involvement of nervous system in particular the vagus nerve in inflammatory responses. The parasympathetic nerve can be activated by “inflammatory reflex” to inhibit macrophages, via their specific nicotinic receptor ?-7 subunit, and hence to reduce the production of tumor necrosis factor (TNF) that plays a pivotal role in many inflammatory reactions and is a key mediator for septic shock. This cholinergic anti-inflammatory pathway has been utilized, with positive outcomes, by means of either pharmacological or electrical stimulation in animal models against inflammatory responses and septic shock. Monoclonal antibodies against TNF and other pro-inflammatory cytokines have also been developed and used against inflammation experimentally and clinically. Although clinical use of these new treatments have yielded primitive and only limited results, these new research findings and concepts are important for the advance of modern medicine, as well as for better comprehension of some theories and practices in traditional medicine. Future directions are discussed herewith. [
3.A case of acute myocardial infarction 24 hours after acute ischaemic stroke.
Annals of the Academy of Medicine, Singapore 2010;39(11):876-878
Acute Coronary Syndrome
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Brain Ischemia
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complications
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pathology
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Carotid Arteries
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pathology
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Chest Pain
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Coronary Angiography
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Coronary Vessels
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pathology
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Dyspnea
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Female
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Fibrinolytic Agents
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administration & dosage
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therapeutic use
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Humans
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Middle Aged
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Myocardial Infarction
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etiology
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pathology
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Risk Factors
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Stroke
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complications
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pathology
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Time Factors
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Tissue Plasminogen Activator
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administration & dosage
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therapeutic use
4.A Review of Breast Cancer Research in Malaysia
CH Yip ; N Bhoo Pathy ; SH Teo
The Medical Journal of Malaysia 2014;69(Supplement A):8-22
Four hundred and nineteen articles related to breast cancer
were found in a search through a database dedicated to
indexing all original data relevant to medicine published in
Malaysia between the years 2000-2013. One hundred and fifty
four articles were selected and reviewed on the basis of
clinical relevance and future research implications. Overall,
Malaysian women have poor survival from breast cancer and
it is estimated that half of the deaths due to breast cancer
could be prevented. Five-year survival in Malaysia was low
and varies among different institutions even within the same
disease stage, suggesting an inequity of access to optimal
treatment or a lack of compliance to optimal treatment.
Malaysian women have poor knowledge of the risk factors,
symptoms and methods for early detection of breast cancer,
leading to late presentation. Moreover, Malaysian women
experience cancer fatalism, belief in alternative medicine, and
lack of autonomy in decision making resulting in delays in
seeking or avoidance of evidence-based medicine. There are
ethnic differences in estrogen receptor status, HER2
overexpression and incidence of triple negative breast cancer
which warrant further investigation. Malay women present
with larger tumours and at later stages, and even after
adjustment for these and other prognostic factors (stage,
pathology and treatment), Malay women have a poorer
survival. Although the factors responsible for these ethnic
differences have not been elucidated, it is thought that
pharmacogenomics, lifestyle factors (such as weight-gain,
diet and exercise), and psychosocial factors (such as
acceptance of 2nd or 3rd line chemotherapy) may be
responsible for the difference in survival. Notably,
survivorship studies show self-management programmes and
exercise improve quality of life, highlighting the need to
evaluate the psychosocial impact of breast cancer on
Malaysian women, and to design culturally-, religiously- and
linguistically-appropriate psycho-education programmes to
help women cope with the disease and improve their quality
of life. Research done in the Caucasian populations may not
necessarily apply to local settings and it is important to
embark on local studies particularly prevention, screening,
diagnostic, prognostic, therapeutic and psychosocial
research.
KEY WORDS: breast cancer; Malaysia; review; genetics; screening;
diagnosis; prognosis; treatment; outcome
5.Antenatal diagnosis and management of foetal intestinal volvulus
Khar Weng Yip ; YKY Cheng ; TY Leung
The Medical Journal of Malaysia 2017;72(2):126-127
In-utero intestinal volvulus is a rare but potential life
threatening foetal complications. It is a surgical emergency
and delay in diagnosis or treatment can increase the
morbidity and mortality to the foetus. We report a case of
mild foetal bowel dilatation diagnosed at 21 weeks of
gestation. She was closely follow up and at 31 weeks of
gestation, in-utero intestinal volvulus was diagnosed with
the characteristic ‘whirlpool’ sign on ultrasound
examination. This case emphasises the importance of early
recognition and quick decision to delivery when intestinal
volvulus is diagnosed. This enabled early surgical
intervention to prevent further foetal morbidity.
Intestinal Volvulus
7.Endoscopic cyclophotocoagulation:an overview and Asian perspective
E-Shawn, GOH ; Boon Ang LIM ; Leonard YIP
International Eye Science 2008;8(9):1756-1760
Su rgical treatment of glaucoma has been classified as cyclodestructive(reducing inflow)or filtering(increasing outflow).Cyclodestructive procedures have traditionally been reserved for eyes with poor visual prognoses and refractory glaucomas including post-trauma,aphakia,congenital and developmental glaucoma.Since Uram described the first use of endoscopic cyclophotocoa gulation(ECP)in 1992,short and long-term outcomes for ECP have been promising.In the present article,we conduct a Pubmed search and review of published English Iiterature on endoscopic cyclophotocoagulation and comparison with limited results in a single Singapore ophthalmic tertiary hospital.Safety and efficacy of ECP and combined phacoemulsification-ECP procedures in treatment of pediatric and adult glaucomas of various etiologies and severities is reported.Local short-term unpublished results from a single Singapore tertiary ophthalmic service is reported and concurs with previously published results.Published reports and current experience with ECP has demonstrated that ECP with direct visualization of the target tissues avoids the complications associated with blind'trans-scleral cyclophotocoagulation by applying optimum energy to target tissue ciliary epithelium with endoscopic visualization and infrared laser wavelength application.Significant financial barriers exist to introducing this service.It is safe and effective in controlling IOP and reducing reliance on anti-glaucoma medications.Wide spread acceptance and use of this technique awaits large scale randomized controlled studies.
8.Comparison Of Invasion By Human Microvascular Endothelial Cell Lines In Response To Vascular Endothelial Growth Factor (Vegf) And Basic Fibroblast Growth Factor (Bfgf) In A Three-Dimensional (3d) Cell Culture System
Chin Tat Ng ; Wai Kien Yip ; Norhafizah Mohtarrudin ; Heng Fong
The Malaysian Journal of Pathology 2015;37(3):219-225
Background: Immortalized human endothelial cells are widely used as in vitro models for debilitating
conditions such as cancer, cardiovascular and ocular diseases. Human microvascular endothelial
cell (HMEC-1) is immortalized via stable transfection with a gene encoding SV40 large antigen
whilst telomerase-immortalized human microvascular endothelial (TIME) cells is immortalized by
engineering the human telomerase catalytic protein (hTERT) into primary microvascular endothelial
cells. Here, we established a three-dimensional (3D) spheroid invasion assay with HMEC-1 and
TIME and compared the difference in their ability to invade through the collagen matrix in response
to exogenous growth factors, namely vascular endothelial growth factor (VEGF) and basic fibroblast
growth factor (bFGF). Methods: TIME and HMEC-1 spheroids were embedded in a collagen
matrix. The spheroids were stimulated with exogenous growth factors, namely VEGF (50ng/mL)
and bFGF (200ng/mL). Twelve points of invasion length from a spheroid was measured using image
analysis software, Image J. Three independent experiments were conducted and data was analysis
by GraphPad Instat software, version 3.05. Results: TIME spheroid invasion was 16.5 fold higher
with exogenous VEGF (50ng/mL) and bFGF (200ng/mL) treatment as compared to those cultured in
complete growth medium only. In contrast, no significant difference was observed between HMEC-1
spheroids stimulated with and without exogenous growth factors, VEGF and bFGF. Conclusions:
This is the first report on the establishment of a 3D-spheroid invasion assay with TIME cells. The
requirement of VEGF and bFGF for TIME spheroids invasion is a novel finding. In addition, this
assay offers an advantage over HMEC-1 for testing novel angiogenic agents since it is not affected
by endogenously secreted growth factors.
9.Psychometric Properties Of The Malay Version Of The Inventory Of Socially Supportive Behaviour (ISSB)
Nasir Yusoff ; Low Wah Yun ; Yip Cheng Har
ASEAN Journal of Psychiatry 2014;15(1):23-29
This study validates The Malay Version of The Inventory of Socially Supportive Behaviour. Methods: The psychometric properties of the ISSBMalay Version were examined on sixty-eight women who were Malay native speakers and diagnosed with breast cancer. Respondents answered the questionnaire at three weeks and ten weeks following surgery for breast cancer. Results: The Malay Version of ISSB showed excellent internal consistency (Cronbach’s alpha=0.96). Test-retest Intraclass Correlation Coefficient (ICC)
was 0.03. Small mean differences were observed at test-retest measurement with Effect Size Index 0.18. Conclusion: The Malay Version of the ISSB could be an
appropriate tool to measure the supportive behavior of the Malaysian population.
Social Support
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Psychometrics
10.Prostate-specific antigen in breast disease.
Bee Hoon Poh ; Gita Jayaram ; Pavai Sthaneshwar ; Cheng Har Yip
The Malaysian journal of pathology 2008;30(1):43-51
The aim of this study is to assess tissue and serum prostate-specific antigen (PSA) in breast lesions; to compare tissue PSA with serum PSA; to compare tissue PSA in benign and malignant lesions and to compare PSA with known prognostic factors in breast carcinoma. Tissue PSA immunoreactivity in twenty women with breast carcinoma was compared with PSA in twenty-three women with benign breast lesions. Tissue PSA was also compared with known prognostic indicators such as tumour size, axillary nodal status, histological type, histological grade, oestrogen receptor status, progesterone receptor status and c-erbB-2 oncoprotein over-expression. Serum free PSAlevels from these women were measured pre- and post-operatively and an attempt was made to correlate serum PSA with tissue PSA expression. 40% and 43% of malignant and benign breast lesions respectively showed tissue PSA immunoreactivity. No significant difference was observed in the tissue PSA expression between these two groups as also between tissue PSA and known prognostic indicators. As serum PSA levels were below the detection limit (< 0.004 ng/ml) in all except two benign cases, no statistical evaluation was done for the latter. Tissue PSA expression did not correlate with other prognostic markers and detectable serum PSA levels were present in too few cases for statistical analysis. Although no definitive conclusion is possible in this preliminary study regarding the role of PSA in breast disease, it stimulates interest in further research in this direction.
public service announcement
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Tissues
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Serum
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Breast
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