1.Diabetic Cardiac Autonomic Neuropathy: A Review of NLRP3 Inflammasome Complicity
Shamala Devi Subramaniam ; Nor Aini Lubis Mhd Zain ; Choy Ker Woon ; Noorkardiffa Syawalina Omar ; Razif Abas
Malaysian Journal of Medicine and Health Sciences 2024;20(No.1):365-368
		                        		
		                        			
		                        			Debilitating and often misdiagnosed cardiac autonomic neuropathy affects people with diabetes. Damage to the
biggest sympathetic trunk ganglion of autonomic nerve fibers that innervate the heart and blood vessels, the superior
cervical ganglion (SCG), is the cause of aberrant heart rate and vascular dynamics in people with diabetic cardiac
autonomic neuropathy (DCAN). Mediating host immunological responses to microbial infection and cellular
damage, inflammasomes are a class of cytosolic protein complexes that include NLRP3. This review compiled the
findings of experimental investigations on DCAN and discussed their connection to the NLRP3 inflammasome’s
involvement. SCG P2X7 receptor expression can be boosted by inflammation brought on by hyperglycemia,
leading to nerve injury. Unfortunately, there is a lack of research on DCAN-related inflammation in animal models,
especially in inflammasome. Currently, only IncRNAUC.360+ shRNA and Schisandrin B, prove to alleviate the
pathogenesis. Therefore, more research into the causes and potential remedies for DCAN is necessary.
		                        		
		                        		
		                        		
		                        	
2.Accessory Pulmonary Ligament? A Case Report of LingulaDiaphragmatic Anatomy Variation
Sivakumar Krishnasamy ; Justin Kok Shao Loong ; Muhammad Afiq Ismanizan ; Nur Samiha Othman ; Shamala Devi Subramaniam ; Razif Abas
Malaysian Journal of Medicine and Health Sciences 2024;20(No.1):404-406
		                        		
		                        			
		                        			This case report presents a groundbreaking discovery of a hitherto undocumented ligament connecting the lingula 
lobe of the left lung to the diaphragm. The study involved a routine dissection of an adult Asian cadaver during a 
respiratory module practical session. The cord-like structure, approximately 7 cm in length and 2 cm in diameter, 
showed ligamentous features and was firmly attached to the upper surface of the left diaphragm without any vascular connections. This finding holds potential clinical significance, particularly during anatomical resections of the 
lung, as the ligament may need to be freed in surgeries such as lingulectomy, left upper lobectomy, or left lower 
lobectomy. However, the ligament’s relevance differs from the well-known inferior pulmonary ligament, which aids 
in accessing crucial lymph nodes during left lower lobectomy. The absence of vascular structures suggests a lack 
of mediastinal lymph nodes associated with this newly identified ligament. Further research is warranted to fully 
understand its clinical implications.
		                        		
		                        		
		                        		
		                        	
3.A CASE REPORT OF SUPERIOR BILATERAL ABERRANT RENAL ARTERIES WITH ACCESSORY LEFT RENAL VEIN
Razif Abas ; Siti Fadziyah Mohamad Asri ; Nurul Huda Mohd Nor ; Rusliza Basir ; Shamala Devi Subramaniam
Journal of University of Malaya Medical Centre 2022;25(1):5-8
		                        		
		                        			
		                        			Knowledge of renal vasculature anomalies is important during the preparation of renal and abdominal surgeries. In this case report, we described a rare finding of bilateral aberrant renal arteries, located at the superior pole of both kidneys, in a cadaver of an elderly Asian man during an anatomy practical session. The aberrant arteries branch from the abdominal aorta, slightly above the level of the normal renal arteries. Additionally, an accessory left renal vein was found to originate from the superior pole of the left kidney which later drains into the left renal vein. No accessory right renal vein was observed. The left renal vein was usually located anterior to the aorta, and bilateral testicular veins were noted to drain into common destinations.
		                        		
		                        		
		                        		
		                        	
4.Maternal Obesity and Its Associated Factors and Outcomes in Klang Valley, Malaysia: Finding from National Obstetric Registry
Rohana Abdul Jalil ; Nurul Farehah Shahrir ; J. Ravichandran R Jeganathan ; Shamala Devi Karalasingam ; Noraihan Mohd Nordin ; Mohamad Farouk Abdullah ; Nadiah Sa&rsquo ; at
Malaysian Family Physician 2021;16(3):56-67
		                        		
		                        			
		                        			Introduction: Maternal obesity presents significant health risks to mothers and their fetuses. This study aimed to determine the proportion, associated factors and outcomes of maternal obesity among pregnant women in Klang Valley, Malaysia.
Methods: A retrospective cross-sectional study was conducted between January 2018 and March 2018 using secondary data from the Malaysian National Obstetric Registry (NOR) for the year 2015. All pregnant women with first-trimester booking at 12 weeks and below that were registered with the NOR and met the inclusion and exclusion criteria were included in the study. Descriptive statistics and multiple logistic regression analysis were used. Data were analysed using SPSS version 22.0. A total of 2113 respondents were included in this study to determine the proportion, associated factors and outcomes of maternal obesity. Regarding the univariate and multivariate analyses, respondents were classified into two groups: normal and obese. The obese group comprised overweight and obese mothers. The underweight group was excluded in the subsequent analysis.
Results: Out of the 2113 respondents, 7.1% were underweight, 41.7% were of normal weight, 28.6% were overweight, 15.9% were in obese class I, 4.6% were in obese class II, and 2.1% were in obese class III according to the WHO (1995) reference. However, when the MOH (2003) cutoff point was used, there was a marked increase in the proportion of respondents in the overweight categories by 2.7% and obesity class I by 12.8%. The Indian (AdjOR 2.06, 95% CI: 1.11, 3.83, p=0.021) and Malay (AdjOR 1.75, 95% CI: 1.02, 3.00, p=0.040) ethnicities, as well as both multiparity (AdjOR 1.46, 95% CI: 1.23, 1.73, p <0.001) and grand multiparity (AdjOR 2.41, 95% CI: 1.78, 3.26, p <0.001), were significantly associated with maternal obesity. There were significant association between maternal obesity with hypertensive disorder in pregnancy (p=0.025), caesarean section delivery (p=0.002) and macrosomic infant (p <0.001).
Conclusion: The identification of risk factors for maternal obesity is important to facilitate intervention programmes focused on improving the pregnancy outcomes for a high-risk group of women.
		                        		
		                        		
		                        		
		                        	
5.Effectiveness of selective risk based screening for Gestational Diabetes (GDM) in Malaysia: A retrospective cohort study based on the National Obstetric Registry (NOR) of Malaysia
Muniswaran Ganeshan ; Shahrul Aiman Soelar ; Shamala Devi Karalasingam ; Mohammad Adam Bujang ; Jeganathan R, M. ; Harris Suharjono
The Medical Journal of Malaysia 2017;72(1):46-49
		                        		
		                        			
		                        			Introduction: Gestational diabetes (GDM) has significant
maternal and foetal implications. screening allows active
interventions which significantly improves pregnancy
outcomes. Despite World Health Organization (WHO), FIGO
and National Institute of clinical Excellence (NIcE)
recommendations for universal screening especially among
high risk population; Malaysia currently adopts a selective
risk based screening for GDM.
Objective: the objective is to audit the effectiveness of the
current practice of selective risk based screening in
detection of GDM in Malaysia.
Methodology: this is a retrospective cohort study based on
the National Obstetric Registry (NOR) which comprises of 14
major tertiary hospitals in Malaysia. the study period was
from 1st January 2011 till 31st December 2012 and a total of
22,044 patients with GDM were analysed. Logistic
regression analysis was used to calculate the crude odd
ratio.
Results: the incidence of GDM in Malaysia is 8.4%. Maternal
age of ≥25, booking bMI ≥27kg/m2, booking weight ≥80kg
and previous hypertension are non-significant risk of
developing GDM in Malaysia. Parity 5 and more was only
associated with an odds-ratio of 1.02 (95% confidence
Interval: 0.90-1.17) as compared to parity below 5. the
association of women with previous stillbirth with GDM was
not significant.
conclusion: current risk based screening for GDM based on
maternal age, booking bMI, weight and hypertension is
inappropriate. An ideal screening tool should precede
disease complications, which is the novel objective of
screening. Universal screening for GDM in Malaysia may be
a more accurate measure, especially with regards to
reducing maternal and foetal complications.
		                        		
		                        		
		                        		
		                        			Diabetes, Gestational
		                        			
		                        		
		                        	
6.Bilateral thalamic internal medullary lamina involvement in a case of dengue encephalitis
Sherrini Bazir Ahmad ; Chin Sum Cheong ; Shen-Yang Lim ; Kartini Rahmat ; Faizatul Izza Rozalli ; Shamala Devi Sekaran ; Helmi Sulaiman, Sasheela Ponnampalavanar ; Kheng Seang Lim ; Chong Tin Tan
Neurology Asia 2016;21(4):375-379
		                        		
		                        			
		                        			There are 50-100 million dengue infections each year, but dengue encephalitis is relatively
uncommon. The aetiology of neuronal injury is proposed to be due to direct viral neurotropism or
host immune response-mediated inflammation causing neuronal damage. We report a case of severe
dengue encephalitis, presenting during the acute viraemic phase of the disease. This was associated
with inflammation and haemorrhage of the internal medullary lamina of both thalami which, to our
knowledge, has not yet been reported in other infections of the central nervous system.
		                        		
		                        		
		                        		
		                        			Dengue
		                        			
		                        		
		                        	
7. Anti-encystment and amoebicidal activity of Lonicera japonica Thunb. and its major constituent chlorogenic acid in vitro
Tooba MAHBOOB ; Abdul-Majid AZLAN ; Tian-Chye TAN ; Veeranoot NISSAPATORN ; Chandramathi SAMUDI ; Shamala Devi SEKARAN ; Christophe WIART
Asian Pacific Journal of Tropical Medicine 2016;9(9):866-871
		                        		
		                        			
		                        			 Objective To examine the acanthamoebicidal effects of ethyl acetate, aqueous and butanol fractions of dried flower buds of Lonicera japonica (L. japonica) Thunb. (Flos Lonicerae) in vitro. Methods Acanthamoeba triangularis isolates were obtained from environmental water samples and identified by PCR. They were exposed to ethyl acetate, water and butanol fractions of L. japonica Thunb. at concentrations ranging from 0.5 mg/mL to 1.5 mg/mL. The extracts were evaluated for growth inhibition at 24, 48 and 72 h, respectively. Chlorogenic acid at a concentration of 1 mg/mL was examined for inhibition of encystment. Results Ethyl acetate fraction at a concentration of 1.5 mg/mL evoked a significant reduction of trophozoite viability by 48.9% after 24 h, 49.2% after 48 h and 33.7% after 72 h chlorogenic acid, the major active constituent of L. japonica Thunb. at the concentration of 1 mg/mL reduced the cysts/trophozoite ratio by 100% after 24 h, 84.0% after 48 h and 72.3% after 72 h. This phenolic compound at concentration of 1 mg/mL concurrent with 0.6% hydrogen peroxide inhibited hydrogen peroxide-induced encystment by 92.8% at 72 h. Conclusions Results obtained from this study show that ethyl acetate fraction at 1.5 mg/mL is the most potent fraction of L. japonica Thunb. and its major constituent chlorogenic acid showed the remarkable inhibition of encystment at a concentration of 1 mg/mL. 
		                        		
		                        		
		                        		
		                        	
8.Pneumococcal replicative state in relation to its adherence capacity to A549-cell line: A preliminary in vitro analysis
Mohd Nasir Mohd Desa ; Navaratnam Parasakthi ; Shamala Devi Sekaran ; Jamunarani Vadivelu
Malaysian Journal of Microbiology 2011;7(2):107-110
		                        		
		                        			
		                        			This study was to compare the replication capacity of pneumococcal isolates (serotypes 1, 7F, 19F and 23F) with their adherence pattern to monolayer cells (A549). For standardization purposes, all isolates showed a normal growth curve in both bacteriological (THB + 0.5% yeast extract with and without 2% FBS) and cell culture media (RPMI + 2% FBS). In the former media, a shorter lag phase was observed for isolate serotypes 1 and 7F in presence of serum while in the later; growth yield was lower for all isolates with stationary phase approaching OD600 of 0.01 as compared to 1.0 in bacteriological media. In the replicative analysis at different growth phases of the isolates in cell culture media, growth capacity at 3 h post-incubation was frequently twice as that at 1 h, and that at early-log phase was frequently higher than that at mid-log phase at both post-incubation times. Adherence was frequently the least at early-log phase although the isolates were in the most active state of replication to increase the number of pneumococcal cells to adhere. At mid- and late-log phases, pneumococcal adherence was frequently higher although the replication was reduced. This study marks the potential correlation between pneumococcal growth fitness and adherence capacity whereby the later may not be superior during the early growth phase.
		                        		
		                        		
		                        		
		                        	
9.Development and evaluation of a one-step SYBR-Green I-based real-time RT-PCR assay for the detection and quantification of Chikungunya virus in human, monkey and mosquito samples.
Ummul Haninah, A ; Vasan, S S ; Ravindran, T ; Chandru, A ; Lee, H L ; Shamala Devi, S
Tropical Biomedicine 2010;27(3):611-23
		                        		
		                        			
		                        			This paper reports the development of a one-step SYBR-Green I-based realtime RT-PCR assay for the detection and quantification of Chikungunya virus (CHIKV) in human, monkey and mosquito samples by targeting the E1 structural gene. A preliminary evaluation of this assay has been successfully completed using 71 samples, consisting of a panel of negative control sera, sera from healthy individuals, sera from patients with acute disease from which CHIKV had been isolated, as well as monkey sera and adult mosquito samples obtained during the chikungunya fever outbreak in Malaysia in 2008. The assay was found to be 100-fold more sensitive than the conventional RT-PCR with a detection limit of 4.12x10(0) RNA copies/μl. The specificity of the assay was tested against other related viruses such as Dengue (serotypes 1-4), Japanese encephalitis, Herpes Simplex, Parainfluenza, Sindbis, Ross River, Yellow fever and West Nile viruses. The sensitivity, specificity and efficiency of this assay were 100%, 100% and 96.8% respectively. This study on early diagnostics is of importance to all endemic countries, especially Malaysia, which has been facing increasingly frequent and bigger outbreaks due to this virus since 1999.
		                        		
		                        		
		                        		
		                        	
10.Aetiology of viral central nervous system infection, a Malaysian study
Yean Kong Yong ; Heng Thay Chong ; Kum Thong Wong ; Chong Tin Tan ; Shamala Devi
Neurology Asia 2008;13(1):65-71
		                        		
		                        			
		                        			Over 100 viruses are known to cause acute viral encephalitis in human. In order to diagnose a viral
central nervous system infection, various laboratory diagnosis methods have been used. In this study,
we examined 220 cerebrospinal fluid samples that were received at the Diagnostic Virology Laboratory
of University Malaya Medical Centre between year 2004 to 2006, by viral isolation, pathogen specific
antibody ELISA, polymerase chain reaction (PCR) and Real-Time PCR. Majority of the samples
were from patients <10 years old. Out of 220 samples, 3 were positive for viral isolation, 27 for
PCR (inclusive for the 3 positive for viral isolation) and 39 for pathogen specific ELISA. The total
positive detection rate of this study was 30%. Herpes virus was the most important aetiologic agent,
responsible for 58% of infection, followed by paramyxovirus (especially measles virus) in 26% of
infection, and 14% by enterovirus. Parvovirus and flavivirus were the other common viruses. Among
the herpes viruses, herpes simplex and cytomegalovirus were the most common.
		                        		
		                        		
		                        		
		                        	
            

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