Increases in the incidence of cardiovascular disease (CVD) have aroused strong interest in identifying antioxidants from natural sources for use in preventive medicine. Citrus macroptera (C. macroptera), commonly known as "Satkara", is an important herbal and medicinal plant reputed for its antioxidant, nutritious and therapeutic uses. The aim of the present study was to investigate the cardio-protective effects of ethanol extracts of C. macroptera peel and pulp against isoproterenol (ISO)-induced myocardial infarction (MI) in rats. Male albino Wistar rats (n=36) were pre-treated with peel and pulp extracts (500mg/kg) for 45days. They received a challenge with ISO (85mg/kg) on the 44th and 45th days. Our findings indicated that subcutaneous injection of ISO induced severe myocardial injuries associated with oxidative stress, as confirmed by elevated lipid peroxidation (LPO) and decreased cellular reduced glutathione (GSH) and anti-peroxidative enzymes, including glutathione peroxidase, glutathione reductase and glutathione-S-transferase, compared with levels observed in control animals. Pre-treatment with C. macroptera peel and pulp extracts prior to ISO administration however, significantly improved many of the investigated biochemical parameters, i.e., cardiac troponin I, cardiac marker enzymes, lipid profile and oxidative stress markers. The fruit peel extract showed stronger cardio-protective effects than the pulp extract. The biochemical findings were further confirmed by histopathological examinations. Overall, the increased endogenous antioxidant enzyme activity against heightened oxidative stress in the myocardium is strongly suggestive of the cardio-protective potential of C. macroptera.
Out-of-hospital cardiac arrest (OHCA) patients require immediate cardiopulmonary
resuscitation (CPR). Early initiation of CPR and defibrillation before arrival at
Emergency Department (ED) increases the chance of survival from sudden cardiac
arrest. The main objective of this study was to identify the factors that influenced
the outcome of early cardiopulmonary resuscitation (CPR) in out-of-hospital cardiac
arrest (OHCA) patients managed at the ED of Universiti Kebangsaan Malaysia
Medical Centre (UKMMC). The second objective was to determine the incidence
of CPR initiated by the public prior to ambulance arrival. The present study was a
one-year cross-sectional study. The OHCA patients were identified from the ED
resuscitation logbook. Patients’ medical records were used to obtain details of the
resuscitation. Factors recorded included: aetiology of arrest, initiation of on-scene
CPR, use of automated external defibrillators (AEDs), mode of transportation and
the incidence of return of spontaneous circulation (ROSC) in the ED. Categorical
data was analysed using chi-square and Fisher exact tests. Nine patients out of 98
had early CPR. Three patients achieved ROSC. Gender was significantly associated
with ROSC (p-value=0.015). More patients who received early CPR achieved ROSC
compared to those who received late CPR. The provision of early CPR and usage
of AEDs by the public is still low. Female gender had a positive influence on ROSC.
Efforts are required to increase the awareness and involvement of the public in
initiating early CPR prior to the arrival of ambulance service.
A common bony protrusion that occurs over the hard palate is sometimes mistaken for a malignancy especially when it is large. This bony growth is a torus palatinus (TP), which is a benign bony prominence over the hard palate. It occurs most commonly in bilateral multiple form, and is often located at the canine to premolar area. A basic knowledge of the assessment and management of TP is important, particularly for the first-line family physician to ensure that the correct information is given to the patient.
[Purpose] The purpose of this study was to investigate the effects of seat pressure distribution measurements based on a specific posture to predict the pressure felt level when seated. [Subjects and Methods] To examine the relationship between body pressure data and the driver's perception, eleven subjects were selected to participate in a simulated driving experiment using a pressure mat as a direct measurement method to measure the seat pan's pressure distribution. The buttock-popliteal length was measured using an anthropometer, and the pressure felt ratings evaluated after the body pressure measurements were recorded. Accordingly, this was then followed by performing statistical analysis using seat pressure measurements, and the buttock-popliteal length as independent variables along with subjective ratings selected of the pressure felt by the drivers' as dependent variables. [Results] The findings of this study suggest that the direct measurements and anthropometric body data are positively correlated with the predictive model thereby confirming the validity of the model with an R2 value of 0.952. [Conclusion] The proposed model is expected to provide a useful reference value for new vehicle drivers by providing the pressure felt level based on direct and body measurements in a specific posture.
Jewelry utilizes lead either directly or as a base metal. Costume jewelry requires lead before molding and plating the product with valuable metals. Therefore, such ornaments have a great potential to release heavy metals having health hazards. Also, jewelry makers engaged in preparing German silver, an alloy, apply lead in smelting, alloying, rolling and milling silver wires and pieces. The metal is taken up by blood, soft tissues and bone. The biological effects of lead are dependent upon the level and duration of exposure. Lead inhibits three enzymes of heme biosynthesis- δ-amino-levulinic-acid dehydratase (ALAD), coproporphyrin oxidase, and ferrochelatase, impairing heme synthesis and depressing serum level of erythropoietin resulting in decreased hemoglobin synthesis. Lead exposure also affects calcium metabolism and impair the synthesis of Calcitriol. In the present study, jewelry makers from Dhaka, Bangladesh, were shown to have significantly high levels of lead, protein, albumin, and parathormone in their blood, and significantly high amount of zinc-protoporphyrin and δ-amino-levulinic-acid in their urine. The control group, on the other hand showed significantly higher amounts of calcium (both total and ionized form) Vitamin D3and non-activated erythrocyte ALAD in their blood, along with hemoglobin. It might be due to inhibition of 1-α-hydroxylase enzyme in renal tubules. Lead causes nephro-toxicity and inhibits 1-α- hydroxylase enzyme leading to decreased calcitriol synthesis resulting in impaired calcium absorption across gastro-intestinal tract and renal tubules. Low Vitamin D3and significantly increased Parathyroid hormone (PTH) in study group has been found.
Citation:
Abdullah MAH, Abdullah AT. Annual report of National Orthopaedic Registry Malaysia (NORM) Hip Fracture 2009. Kuala Lumpur: Clinical Research Centre, Kuala Lumpur; 2010
Introduction: A cross-sectioned study was carried out on 1016 drug addicts from Johor state to better understand their profile.
Method: A structured questionnaire prepared in three languages was used to collect the data which was analyzed using the Statistical Package for Social Sciences.
Result & Discussion: The overall mean age of the respondents was 33.8 (95% CI= 33.3 - 34.4) years and ranged from 16 to 61 years. ANOVA post hoc multiple comparison tests showed that there was a significant difference in the mean age between Malays and Chinese (p<0.05). The majority of the respondents were Malay (79.6%) and had secondary education (72.1%) or primary education (21.7%). The majority (79%) was either semi-skilled or unskilled. More than 70% had mores than five siblings. About 36% of the respondents had past a history of discipline problem at school. The majority (99.6%) of the drugs addicts had smoked before and more than 90% were currently smoking. More than 80% had consumed alcoholic beverages. The majority did not use condom when they had sex. Only 24% stated that they did use a needle or syringe that had previously been used by someone else. Less than 4% had either bleached or boiled the needle or syringe that had previously been used by someone else. About 17% were tested positive for HIV. The mean age at which the respondents first started injecting drugs was 21.5 (95% CI= 20.7 - 22.2) years. ANOVA post hoc multiple comparison tests showed that there was no significant difference in the mean age of the different ethnic groups at which the respondents first started injecting drugs. The majority (84.2%) of the drug addicts started injecting drugs between 10 and 20 years of age. Friends introduced 80% of the drug addicts to drugs. The common reasons given for first taking drugs was " I was curious about the feeling of taking drugs (43.6%), "my friends asked me to try" (23.4%), "to release tension" (15.6%) and 5% stated "to try for fun", and 3% that they were "depressed". The majority (64.2%) of the drug addicts spend RM 500 or more per month on drugs and more than 10% of them spend as much as RM 1000 or more per month.
Conclusion: These results indicate an urgent need for a more comprehensive prevention program involving family, schools, commmunities and the media and aimed at reducing drug abuse. Keywords: Profile, drug addicts, Malaysia
The seasonal abundance, dynamics and composition of the filamentous Cyanobacteria Planktothrix spp. was studied over a 1-year period in two storm-water-fed earthen fishponds in Rajshahi city, northwestern Bangladesh. Sampling was conducted monthly using plankton net (25 μm mesh size) and the samples preserved in 5% formalin. Water quality parameters including water temperature, transparency, pH, dissolved oxygen (DO), biological oxygen demand (BOD),
free carbon dioxide (CO2), nitrite-nitrogen (NO2-N), nitrate-nitrogen (NO3-N), ammonium (NH4
+), oxidation reduction index (rH2) were recorded during each sampling. Two species; Planktothrix agardhii and Planktothrix rubescens were identified during the study with P. agardhii recording higher abundance (p<0.05) all year round. The Planktothrix cell density was highest during March: 3.06×106 cells/L and 1.23×106 cells/L in Pond-1 and 2, respectively. The abundance of P. agardhii was relatively higher in spring. The cell densities increased with increasing temperature, pH, and nutrient concentration. Lower cell densities were recorded during periods of high BOD. The results of this study provide a useful guide for aquaculturists and other environmental scientists for the management of the cyanotoxin producing algal blooms of Planktothrix spp. in fertilized fish ponds and other aquatic habitats.
The identification of chromosomal aberrations in prostate cancer has been widely studied with several known oncogenes and tumor suppressor genes have successfully been discovered. The most frequent aberrations detected in western population were losses in chromosome 5q, 6q, 8p, 13q, 16q, 17p, 18q and gains of 7p/q and 8q. The purpose of this study was to determine the chromosomal aberrations among Malaysian men of Southeast Asia population and discover those potential genes within that chromosomal aberrant region. Thirty-six formalin-fixed paraffin embedded specimens consist of eight organ-confined prostate cancer cases, five with capsular invasion, 14 showed metastasis and nine cases had no tumor stage recorded, were analyzed by array CGH technique. Chromosomal losses were frequently detected at 4q, 6q, 8p, 13q, 18q while gains at 7q, 11q, 12p, 16q and 17q. Gain of 16q24.3 was statistically significant with tumor size. Gains of 6q25.1 and Xq12 as well as losses of 3p13-p1.2 and 13q33.1-q33.3 were significantly correlated with Gleason grade whereas 12p13.31 gain was associated with bone metastasis. Several potential genes have also been found within that aberrant region which is myopodin (4q26-q27), ROBO1 (3p13-p11.2), ERCC5 (13q33.1-q33.3) and CD9 (12p13.31), suggesting that these genes may play a role in prostate cancer progression. The chromosomal aberrations identified by array CGH analysis could provide important clues to discover potential genes associated with prostate tumorigenesis of Malaysian men.
Various pharmacy services are offered in public health facilities, ranging from distributive activities (dispensing) to patient-oriented services (pharmaceutical care). These activities are monitored through indicators established at the national level. In Malaysia, the indicators have not been transformed into a measurement of hospital pharmacy service efficiency. The main objectives of this study were to assess the relative performance of hospital pharmacy services and to investigate the factors that may affect the performance levels. Double-bootstrap data envelopment analysis was applied to measure the technical efficiency levels of 124 public hospital pharmacies in 2014. An input-oriented variable returns to scale model was adopted in the study, while bootstrap truncated regression was conducted to identify the factors that may explain the differences in the efficiency levels. The average bias-corrected technical efficiency score varies according to the hospital size (0.84, 0.78 and 0.82 in small, medium and large hospitals, respectively). The hospital size, hospital age, urban location and information technology are important determinants of the efficiency levels. The study contributes to establishing baseline technical efficiency information for public hospital pharmacy services in Malaysia. The measurement of hospital pharmacy efficiency can guide future policy making to improve performance and ensure the optimum level of available resources.
Finger photoplethysmography (PPG) waveform is blood volume change of finger microcirculation that reflects vascular function. Reflection index (RI), stiffness index (SI) and second derivative of photoplethysmogram (SDPPG) are derived from PPG waveforms proposed as cardiovascular disease (CVD) markers. Heart rate (HR) is a known factor that affects vascular function. Individual resting HR variation may affect RI, SI and SDPPG. This review aims to identify studies about the relationship between HR with RI, SI and SDPPG among humans. A literature search was conducted in Medline via the Ebscohost and Scopus databases to find relevant articles published within 11 years. The main inclusion criteria were articles in the English language that discuss the relationship between HR with RI, SI and SDPPG using PPG among humans. The search found 1960 relevant articles but only six articles that met the inclusion criteria. SI and RI showed an association with HR. SDPPG (SDPPG-b/SDPPG-a ratio, SDPPG-d/SDPPG-a ratio, aging index (AGI) and revised aging index (RAGI)) also had an association with HR. Only RI had a considerable association with HR, the association between SI and HR was non-considerable and the association between HR and SDPPG was inconclusive. Further interventional studies should be conducted to investigate this issue, as a variation in resting HR may challenge the validity of PPG-based CVD markers.
MicroRNAs (miRNAs) are single-stranded, endogenous RNA molecules that play a significant role in the regulation of gene expression as well as cell development, differentiation, and function. Recent data suggest that these small molecules are responsible for the regulation of immune responses. Therefore, they may act as potent modulators of the immune system and play an important role in the development of several autoimmune diseases. Antiphospholipid syndrome (APS) is an autoimmune systemic disease characterized by venous and/or arterial thromboses and/or recurrent fetal losses in the presence of antiphospholipid antibodies (aPLs). Several lines of evidence suggest that like other autoimmune disorders, miRNAs are deeply involved in the pathogenesis of APS, interacting with the function of innate and adaptive immune responses. In this review, we characterize miRNAs in the light of having a functional role in the immune system and autoimmune responses focusing on APS. In addition, we also discuss miRNAs as potential biomarkers and target molecules in treating APS.
The importance of terrestrial insects as food items for freshwater fish was studied by examining stomach contents of Devario regina (Fowler 1934) and its population parameters at canopied areas of selected tributaries of Kerian River, in the northern state of Peninsular Malaysia. Ninety six percent (121 out of 126) of the fish stomachs examined contained food materials in the stomachs and the values of percentage of occurrence (%F), percentage numerical (%N) and percentage points (%P) indicated that collected fish ate similar food items in all rivers. Among the food categories, scavenging terrestrial ants (Formicidae) were the most dominant food item, hence the main diet for this species. The Index of Relative Importance (IRI) scores of food items indicated that ants were higher than other food items. This surface water feeder experienced a positive allometric growth (W = aLb) with a b (rate of growth) value of 3.256. Its asymptotic length, growth constant and growth performance index represented this species with a short life-span (L∞ = 10.90 cm, K = 1.20 year-1, φ’ = 2.15, tmax = 3 year, respectively) and had higher natural mortality (M = 2.40 year-1) than fishing mortality (F = 0.35 year-1) while the fish stock was underexploited (E = 0.13). The finding of this study indicated the importance of terrestrial ants as a food source that support excellent growth of D. regina and the need to conserve riparian trees along river banks to provide allocthonous materials and habitats for the ants.
Currently, there is a growing interest of using woven material in composite production for many applications such as
structural applications, non-structural applications, household utilities, parts for automobile, aerospace components,
flooring and ballistic laminate composites. The structure and properties of the woven fabric is very important as it dictate
the woven composite properties. The properties of yarn like linear density, twist factor and strength can influence most
of the woven fabric properties. Strength of woven fabric is one of the most important properties which make it superior
in final composite applications. In this study, the effects of linear density i.e. 500, 1000, 1500 and 2000 tex on physical
and mechanical properties of kenaf yarn were evaluated. The assessment on twist type, twist angle, yarn diameter, yarn
structure, fibre density, moisture content, water absorption and mechanical properties were carried out on kenaf yarns.
The yarn mechanical properties were tested on the tensile strength, Young’s Modulus and elongation. It was found that,
different linear density of yarn exhibited different behavior of yarn properties. Higher linear density yarn produced
wider yarn diameter compared to lower linear density yarn, resulting to higher fibre and moisture content yarn. Yarn
tensile strength has increased by 46% when linear density was changed from 500 to 2000 tex due to higher amount of
individual fibres. However, for Young’s Modulus, the values reduced as the yarn linear density increased due to several
factors including number of fibres and moisture content of yarn.
Achieving smoking cessation is an arduous process, where smokers try different methods or approaches to achieve cessation. Quit smoking attempts play an important role in smoking cessation.Thus, this study was conducted to determine the factors associated with attempt-to-quit smoking among the currentsmokers in Sarawak.This cross-sectional study was conducted among adult smokers in Sarikei, Sarawak by face-to-face interview using an adapted and validated questionnaire. Non-probability sampling method was used to select the study place. An adult smoker was selected systematically from each selected household. A total of 482 smoker households were identified with a response rate of 92.3%. Data was analysed using IBM SPSS Version 22.0. A p-value of <0.05 was considered statistically significant. The mean (SD) age of the smokers was 36.3(13.3) years. However, the mean (SD) age of smoking initiation was 18.5(4.8) years. Majority of the smokers were male (91.5%), with the male to female ratio being 1:0.1. Mean (SD) score on The Fagerström Test for Nicotine Dependence was 4.75(2.4), while motivation to quit smoking score was 3.04(1.0). Majority of the smokers (83.1%) hadever seen pictorial health warnings on cigarette packs. More than half of the smokers (54.8%) had ever tried to quit smoking. Binary logistic regression analysis revealed that marital status, religion, ethnicity, pictorial health warnings on cigarette packs and motivation to quit smoking appeared to be the significant predictors of attempt-to-quit smoking (p<0.05). Understanding the attempts to quit smoking will assist inclinical expectations. Thus, a smoking cessation programme should be designed in line with these factors, to aid quit smoking attempts.
Citation: Abdullah MAH, Abdullah AT. Annual report of National Orthopaedic Registry Malaysia (NORM) Diabetic Foot 2009. Kuala Lumpur: Clinical Research Centre, Malaysia; 2010
Extreme workloads and strict work schedules make an individual cut their time and energy from their family domain, which may create a conflict, and this situation is called Work-Family Conflict (W-FC). Besides this, Work Family Balance (WFB) and Job Satisfaction (JS) issues are significant for academics because they have to play two roles (Job and Family) at the same time. This paper's fundamental objective was to investigate the indirect effect (mediation) of WFB through both forms of W-FC and JS. Following the convenience sampling technique, 250 married academicians from different private universities were considered for the sample size. Analysis of Moment Structures (AMOS) and Statistical Package for the Social Sciences (SPSS) was used to complete the data analyses. The outcomes of this study showed that out of the two forms, only W to F has significant adverse effects on JS. Also, it was found that to some extent, WFB showed a partial mediating effect only between W to FC and JS, whereas there was no mediating effect through F to WC and JS. These findings will help both academicians and higher authorities of private universities in Bangladesh. The higher authorities and decision-makers of the private universities in Bangladesh can identify the sources of W-FCs and take the necessary steps to mitigate the level of W-FCs.
A methodology is developed in diagnosing the effect of job organizational factors on job satisfaction in two automotive industries in Malaysia. One hundred and seventy male subjects of age 18-40 years with the mean age of 26.8 and standard deviation (SD) of 5.3 years and the mean work experience of 6.5 years and SD of 4.9 years took part in the study. Five job organizational factors were tested in the study including job rotation, work method, training, problem solving and goal setting. A job organization questionnaire was designed and was based on respondents' perception in relation to job satisfaction. The results showed that job organization factors were significantly related to job satisfaction. Job rotation, work method, training and goal setting showed strong correlation with job satisfaction while problem solving had intermediate correlation in the first automotive industry. On the other hand, most job organization factors showed intermediate correlation with job satisfaction in the second automotive industry except the training factor which had low correlation with job satisfaction. These results highlight that job rotation, work methods, problem solving and goal setting are outstanding factors in the study of job satisfaction for automotive industries.
As transporters of RNAi therapeutics in preclinical and clinical studies, the application of nanoparticles is often hindered by their susceptibility to opsonin-mediated clearance, poor biological stability, ineffectual targeting, and undesirable effects on healthy cells. Prolonging the blood circulation time while minimizing the off-target distribution and associated toxicity is indispensable for the establishment of a clinically viable delivery system for therapeutic small interfering RNAs (siRNAs). Herein, we report a scalable and straightforward approach to fabricate non-toxic and biodegradable pH-responsive strontium sulfite nanoparticles (SSNs) wrapped with a hydrophilic coating material, biotinylated PEG to lessen unforeseen biological interactions. Surface functionalization of SSNs with PEG led to the generation of small and uniformly distributed particles with a significant affinity towards siRNAs and augmented internalization into breast cancer cells. A triple quadrupole liquid chromatography-mass spectrometry (LC-MS) was deployed to identify the proteins entrapped onto the SSNs, with the help of SwissProt.Mus_musculus database. The results demonstrated the reduction of opsonin proteins adsorption owing to the stealth effect of PEG. The distribution of PEGylated SSNs in mice after 4 h and 24 h of intravenous administration in breast tumour-bearing mice was found to be significantly less to the organs of the reticuloendothelial system (RES) and augmented accumulation in the tumour region. The anti-EGFR siRNA-loaded PEG-SSNs exerted a significant inhibitory effect on tumour development in the murine breast cancer model without any significant toxicity to healthy tissues. Therefore, PEGylated SSNs open up a new avenue for tumour-selective efficient delivery of siRNAs in managing breast cancer.
Globally, water pollution from the textile industries is an alarming issue. Malachite Green dye of the triphenylmethane group is an extensively used dye in the fabric industries that is emitted through textile wastewater. This study aimed to isolate and characterize potential Malachite Green (MG) dye degrading bacteria from textile effluents. Different growth and culture parameters such as temperature, pH and dye concentration were optimized to perform the dye-degradation assay using different concentrations of MG dye in the mineral salt medium. A photo-electric-colorimeter was used to measure the decolorizing activity of bacteria at different time intervals after aerobic incubation. Two potential bacterial strains of Enterobacter spp. CV-S1 (accession no: MH450229) and Enterobacter spp. CM-S1 (accession no: MH447289) were isolated from textile effluents exhibiting potential MG dye decoloring efficiency. Further, the RAPD analysis and 16S rRNA sequencing confirmed the genetic differences of the isolated strains. Enterobacter sp CV-S1 and Enterobacter sp CM-S1 can completely decolor MG dye up to 15 mg/L under shaking condition without any requirement of sole carbon source. Thus, these two bacteria have the potency to be utilized in the textile wastewater treatment plant.