Displaying publications 6621 - 6640 of 8505 in total

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  1. Win, S. Y., Win, T. T., Maung, Y. M., Soe, K. K. K., Kyaw, T. T., Tan, C. K., et al.
    MyJurnal
    Dye-sensitized solar cell (DSSC) is the third generation of thin film solar cell. In this work, carrot fruit dye was prepared and used in DSSC as a sensitizer. TiO2–ZrO2 fine binary oxide was mechanochemically prepared and made paste. TiO2–ZrO2 paste (colloidal) was deposited onto FTO/glass in two ways, i.e. as single and double coatings by rolling method. It was immersed in the carrot solution to get dyed cell. The dyed TiO2-ZrO2-FTO/glass cell was offset with the FTO/glass cell coated with adhesive carbon paste. Photovoltaic properties of prepared TiO2–ZrO2 DSSC cell were measured. Results showed that the efficiency of double coating cell was greater than that of the single coating cell. According to the fill factor from the experiments, both the DSSC cells were acceptable for industrial requirement. Hence, it can be concluded that the results obtained were acceptable in the use of cost-effective and eco-favourable dye-sensitized solar cell.
  2. Ho, Christopher C.K., Praveen, S., Goh, E.H., Tan, G.H., Badrulhisham, B., Zulkifli, M.Z., et al.
    Medicine & Health, 2011;6(2):98-106.
    MyJurnal
    This study aims to determine the prevalence of lower urinary tract symptoms (LUTS) and level of awareness among male outpatients in Universiti Kebangsaan Malaysia Medical Centre (UKMMC). A questionnaire consisting of demographic data, questions related to knowledge, attitude and practice on BPH and the International Prostate Symptom Score (IPSS) was used for this study. Uroflowmetry and bladder scan were used to evaluate the function of the urinary tract and severity of BPH. Urine dipstick was done for glycosuria, proteinuria and haematuria. A total of 220 respondents were surveyed. The prevalence of moderately and severely symptomatic LUTS was 42.7%. The most commonly reported LUTS were nocturia (78.2%), frequency (58.2%) and incomplete emptying (44.6%). The prevalence of glycosuria, proteinuria and haematuria were 23.6%, 11.4% and 1.8% respectively. There was a significant association between increasing age with the severity of LUTS (p=0.005). Out of 102 respondents with voided urine volume greater than 150 mL, there was a significant decrease in maximum (Qmax) (p=0.039) and average (Qave) urine flow rates with every 10 years increase of age (p=0.001). The majority of respondents (59.5%) have heard of BPH before. Over 78.2% of the respondents would seek medical attention if they have LUTS with 15.9% saying they would seek traditional treatment. In conclusion, the prevalence of LUTS was high and the level of awareness was satisfactory.
    Study site: surgical and medical clinics, Pusat Perubatan Universiti Kebangsaan Malaysia (PPUKM)
  3. Easaw, Samuel, Toh, Peng Yeow, Li, Ching Lee, Wai, Sun Choo, Tow, Shung Tan, Amir Sharifuddin Mohd Khir, et al.
    MyJurnal
    Realising possible unmet needs of final year medical students we initiated a weekly informal face-toface discussion forum between them and the teaching faculty of the department of medicine. Various academic and non-academic topics, as dictated by the students, were discussed in 19 weekly sessions. Evaluation by the students was subsequently done by means of an on-line questionnaire after the final examinations. The aim of this study was to evaluate this forum, undertaken for the first time in our institution, by assessing student feedback. We conclude that although the number of attendees and responders were small, feedback was generally positive. This type of forum can be improved upon and serve as another portal for benefitting students.
  4. Syer, Ree Tee, Xin, Yun Teoh, Wan Abdul Rahman Wan Mohd Aiman, Ahmad Aiful, Siu, Calvin Yee Har, Zi, Fu Tan, et al.
    MyJurnal
    Background: Hypertension is estimated to cause4.5% of the global disease burden. The prevalence of hypertension in Malaysia is 32.2%.
    Objective: To determine the prevalence of hypertension and its associated risk factors in two rural communities in Penang, Malaysia.
    Methods: This cross sectional study was conducted among all consenting residents aged 18 years and above from two villages in Penang. Besides the baseline demographic information, blood pressure was measured using a manual sphygmomanometer according to the American Heart Association Guidelines.
    Results: 50 out of 168 people were hypertensive, giving a prevalence rate of 29.8%. 50.0% of those found with hypertension were undiagnosed and 48.0% of those who were diagnosed with hypertension had uncontrolled blood pressure. Logistic regression analysis showed that age, history of alcohol consumption and BMI were found to be independently associated with hypertension.
    Conclusions: Age, education level, alcohol consumption and BMI are important risk factors associated with the prevalence of hypertension among the villagers. These risk factors are comparable to those reported in National Health and Morbidity Survery 2006 in Malaysia.
  5. Ramasandran, Gayaithiri, Yen, Khong Su, Sumaiyah Mat, Shahrul Bahyah Kamaruzzaman, Vyrn, Chin Ai, Aik, Ong Teng, et al.
    JUMMEC, 2020;23(1):18-22.
    MyJurnal
    Background: Urinary incontinence is a common problem among older women. The objective of this study was to determine the prevalence of urinary incontinence among older women aged 55 years and over in the Klang valley, the most densely populated urban area in Malaysia, and to determine any potential ethnic differences.

    Methods: This study used cross-sectional data from the Malaysian Elders Longitudinal Research (MELoR) study. A total of 863 participants were included, with a mean age of 67.97 ± 7.50 (S.D.). They were selected by simple random sampling from the electoral rolls of three parliamentary constituencies.

    Results: The prevalence of urinary incontinence was 30.8%. Mixed urinary incontinence (UI) was present in 44.7%, stress UI in 39.1% and urge UI in 16.2%. Ethnic Malays (38%) were more likely than ethnic Indians (32.3%) and Chinese (29.7%) to have UI. Ethnic Malays were also more likely to have stress UI and Indians were more likely to have urge UI .

    Conclusion: The prevalence of UI in this study was comparable to other Asian and worldwide studies. The significant association between ethnicity and UI, however, has not been reported in any previous studies. Further studies should identify factors which may determine these ethnic differences in UI.
  6. Puvithra Ravi Sundram, Tan, Ching Siang, Shashidharan Menon, H. Jaasminerjiit Kaur, Abdullah Khan, Anandarajagopal Kalusalingam, et al.
    MyJurnal
    Anti-peptic ulcer drugs (APUDs) such as proton pump inhibitors (PPI), H2 receptor antagonists (H2A), antacids are widely prescribed. This study is aimed to describe the utilisation pattern of APUDs based on WHO Defined Daily Dose (DDD) and identify most commonly used APUD in the selected hospital. A retrospective study was carried out in outpatient of the selected hospital for year 2017. Sample size was calculated using Raosoft. DDD of APUDs and direct drug cost were calculated. Data were collected through electronic medical record by retrieving patients’ registration number. Inclusion criteria were patients above 18 years old and APUDs prescribed for gastrointestinal related indications. A total of 160 prescriptions were randomly selected for data analysis. Based on the DDD calculated, Rabeprazole 20mg was most prescribed drug among PPI (n=33), while Maalox is most prescribed drug among the antacids (n=23). Based on the DDD calculated, Pantoprazole 20mg recorded highest rates per user per day about 1.26 DDD / user / day while antacids, Actal reported highest usage rate with 7.11 DDD / user / day. Besides, there are 5.4 days supplied per user for this drug. Dexlansoprazole 60mg is the most expensive drug among all the PPI listed in hospital formulary. It has 18.5 days supplied/user, which is the second shortest duration of treatment among all the other PPIs. In contrast, omeprazole 20mg is the lowest cost PPI but the duration supplied per user is longer resulting in higher total cost of therapy. In conclusion, PPIs were the most commonly prescribed.
  7. Tan, H. M., Leong, K. H., Song, J., Mohd Sufian, N. S. F., Mohd Hazli, U. H. A., Chew, L. Y., et al.
    MyJurnal
    Strobilanthes crispus and Clinacanthus nutans are popular herbal plants in the Southeast
    Asian region. The present work was aimed at determining the antioxidant activities and the
    associated components in the leaf extracts of both species using polar and non-polar solvents
    namely water, methanol, ethyl acetate, and hexane. The total phenolic content (TPC) and total
    flavonoid content (TFC) were higher in the leaf extracts of S. crispus as compared to C.
    nutans. Among the solvents, methanol was the best solvent in extracting the antioxidant
    components for S. crispus (TPC: 159.85 ± 0.89 mg GAE/g extract and TFC: 955.47 ± 2.66 mg
    RE/g extract). However, for C. nutans, its methanolic extract yielded the highest TPC (36.39
    ± 0.17 mg GAE/g extract), whereas ethyl acetate yielded the highest TFC (229.61 ± 7.81 mg
    RE/g extract). The high levels of both TPC and TFC contributed to the antioxidant activities
    of S. crispus extract as reflected in the methanolic extract attaining the highest level of
    antioxidant activities, measured by ferric reducing antioxidant power (FRAP) (6.84 ± 1.12
    mmol Fe2+/g extract), DPPH radical scavenging (IC50: 203.60 ± 7.28 μg/mL), and Trolox
    equivalent antioxidant capacity (TEAC) (1.01 ± 0.01 mmol TE/g extract) assays. This
    contrasted with C. nutans which showed lower antioxidant activities owing to its lower TPC
    and TFC. Correlation analysis revealed significant correlations (p < 0.05, r = 0.915 - 0.985)
    between both TPC and TFC in S. crispus and antioxidant activities. However, only TPC of C.
    nutans showed a significant correlation with FRAP values (r = 0.934). Further tentative
    identification of the constituents in the extracts using HPLC-ESI-QToF-MS/MS revealed the
    existence of 20 polyphenolic compounds in both S. crispus and C. nutans, which were likely
    responsible for their antioxidant activities. In addition, 15 polyphenolic compounds classified
    as chalcones, isoflavanoids, flavones, and flavonols have not been previously reported in both
    species. The methanolic extracts of both species yielded a higher content of antioxidants, with
    S. crispus offering a richer source of dietary antioxidants as compared to C. nutans. However,
    further study is needed to identify their bioactivities in relation to their bioactive components.
  8. Marilyn Charlene Montini Maluda, Michelle May D. Goroh, Tan, Eric Chee How, Syed Sharizman Syed Abdul Rahim, Richard Avoi, Mohammad Saffree Jeffree, et al.
    MyJurnal
    Introduction: Melioidosis, also known as Whitmore disease, is caused by the gram-negative bacillus, Burkholderia pseudomallei and remains a public health concern in Southeast Asia and northern parts of Australia. This study attempts to identify all possible complications of melioidosis and its outcomes.
    Methods: Literature search was conducted from databases such as PubMed, Science Direct and Scopus from 1st January 2000 to 31st August 2019. Medical Subject Headings (MeSH) search strategy was used with the terms ‘Melioidosis’ or ‘Burkholderia pseudomallei’ and ‘Complications’.
    Results: A total of 162 titles were identified and 22 articles were included in the review. Findings showed that among the 22 articles, the ratio of male to female melioidosis incidence was 2.3 to 1, with most cases (86.4%) aged older than 14 years old and showed a mean age of 46 years old. A third (7/22) of the papers reported the involvement of the nervous system as a complication of melioidosis followed by cardiovascular complications. Among the 23 cases reported, 13 had underlying medical conditions with most of them (84.6%) having diabetes mellitus or newly diagnosed with diabetes mellitus. Overall, only one case (4.3%) had resulted in mortality, while 17.4% developed complications and 78.3% managed a full recovery after undergoing treatment for melioidosis.
    Conclusion: The most commonly found complication of melioidosis involved the nervous system but patient outcomes were favourable. Rare complications included mycotic aneurysm that can be fatal. Melioidosis can affect almost any organ leading to various complications.
  9. Beng TS, Ghee WK, Hui NY, Yin OC, Kelvin KWS, Yiling ST, et al.
    Palliat Support Care, 2021 Mar 15.
    PMID: 33715663 DOI: 10.1017/S1478951521000262
    OBJECTIVE: Dying is mostly seen as a dreadful event, never a happy experience. Yet, as palliative care physicians, we have seen so many patients who remained happy despite facing death. Hence, we conducted this qualitative study to explore happiness in palliative care patients at the University of Malaya Medical Centre.

    METHOD: Twenty terminally ill patients were interviewed with semi-structured questions. The results were thematically analyzed.

    RESULTS: Eight themes were generated: the meaning of happiness, connections, mindset, pleasure, health, faith, wealth, and work. Our results showed that happiness is possible at the end of life. Happiness can coexist with pain and suffering. Social connections were the most important element of happiness at the end of life. Wealth and work were given the least emphasis. From the descriptions of our patients, we recognized a tendency for the degree of importance to shift from the hedonic happiness to eudaimonic happiness as patients experienced a terminal illness.

    SIGNIFICANCE OF RESULTS: To increase the happiness of palliative care patients, it is crucial to assess the meaning of happiness for each patient and the degree of importance for each happiness domain to allow targeted interventions.

  10. Md. Shamsur Rahman, David Matanjun, Urban John Arnold D’souza, Wan Salman Wan Saudi, Fairrul Kadir, Tan, Teck Song, et al.
    MyJurnal
    Irrational use of drugs could be detrimental issues in the practices of healthcare communities. This problem arises either because of the wrong prescription or inappropriate self-medication. Faulty prescribing practices and incorrect self-medication will lead to an ineffective treatment regime. Still, they can also be unsafe as these may exacerbate or prolong the illness and distress the patients. In turn, these will incur unnecessary treatment costs. The most typical issues in the irrational use of drugs are the patient’s lack of information about the medicine and inadequate proper consultation from physicians. Lack of regulation in the appropriate use and supply of drugs by the relevant enforcement agencies could also be the problem in the irrational use of drugs. Ulceration and inflammation due to the irrational use of NSAIDs, antibiotics, and unhealthy lifestyle may contribute to the novel therapeutic strategy challenges. The ability to purchase the drugs without a doctor’s prescription of nonsteroidal anti-inflammatory drugs (NSAIDs) was also the landmark event that became the most widely used medications for the anti-inflammatory, analgesic, and antipyretic effects. Inadequate knowledge from both drug providers and patients may contribute to the most recognized influential factors in the irrational use of drugs in various countries. The recommendation should introduce an appropriate educational intervention that can be designed to promote rational prescribing. Proper regulation on prescription practices by policymakers and physicians could be the way to ensure the standard of rational usage of drugs have compliant with the healthcare communities.
  11. Nurkhalidah Sabrina Ikmalhisam, Nur Syakirah Abdul Aziz, Michelle Clare Mah, Tengku Intan Baizura Tengku Jamaluddin, Hazmyr Abdul Wahab, Mohd Shawal Firdaus Mohammad, et al.
    ESTEEM Academic Journal, 2021;17(2):135-146.
    MyJurnal
    The objective of this study is to assess Universiti Teknologi MARA (UiTM)
    dental students’ perspective on a novel patient educational kit in helping them
    to deliver post-dental extraction care instructions. All undergraduate clinical
    year dental students of the Faculty of Dentistry, UiTM were recruited for this
    cross-sectional study. 87.8% of these students have volunteered to participate
    in this study. An 8-minutes introductory video of the Post-Dental Extraction
    Care kit (PDEC-kit) was played when simultaneously showcasing the tools in
    the PDEC-kit to the participants. The participants then answered a set of
    validated self-administered questionnaires online on their perception and
    suggestions for improvement of the PDEC-kit, which comprises of 20 items that
    are rated by a 7-point Likert scale along with 7 open-ended questions. A total
    of 216 students participated voluntarily in this study. A vast majority of
    participants agreed that the PDEC-kit is useful (99.1%), easy to use (98.7%),
    and can improve patient’s understanding regarding post-dental extraction care
    instructions (99.1%). The information provided in the kit was also found to be
    appropriate for the patients (97.2%). Interestingly, students who had clinical
    experience in performing dental extractions have rated significantly higher
    scores for half of the questions (p
  12. Dg Norizah Ag Kiflee@Dzulkifli, Roslee Talip, Tan, Choon Keong, Soon Singh Bikar Singh, Lee, Bih Ni, Rosy Talin, et al.
    MyJurnal
    This study was conducted to study the influence of the development of values in 21st century education on the forming of student’ personality in rural Under-Enrolled School (SKM) in Sabah. In addition, this study examines the difference in the mean score of the development of value approach in 21st century education and the forming of student’ personality in rural Under-Enrolled School (SKM) in Sabah. This study uses non-experimental design and quantitative methods. A total of 209 SKM teachers were selected to be sampled in this study. This sample was determined using a simple random sampling method. Questionnaire instruments were used to obtain information from the respondents. The primary data obtained from the respondents were analyzed using Statistical Package for Social Sciences (SPSS) software using inferential statistics analysis involving Linear Regression analysis. The results of the analysis show that there is a significant positive and strong influence between the development of value approach in 21st century education on the forming of student’ personality in rural Under-Enrolled School (SKM) in Sabah (Beta=0.88, t=27.65). The results of this study are expected to provide useful input to various parties, especially the Ministry of Education Malaysia in an effort to improve the school's ability to produce students who are personal and able to contribute to the development of the country.
  13. Abdalla MMI, Azzani M, Rajendren R, Hong TK, Balachandran Y, Hassan TR, et al.
    Am J Med Sci, 2021 Oct 01.
    PMID: 34606752 DOI: 10.1016/j.amjms.2021.07.015
    BACKGROUND: Traditional teaching methods via faculty lectures and text-based materials lack interactivity. Hence, this research aimed to compare the effectiveness of story-based audiovisual mnemonics and the conventional text-reading method on medical students' memory consolidation.

    METHODS: A single-center, systematically randomly sampled, single-blinded, controlled study was conducted among 80 first-year medical students. The students were randomly assigned to the text-reading (control) or story-based audiovisual mnemonics (intervention) group. After completing the learning session, the participants immediately took a test that consisted of ten multiple-choice questions, each of which had one correct single-response answer, and an oral recall test that consisted of ten keywords based on the given topics. The test was repeated at 1 week, 2 weeks, and 4 weeks post intervention. Descriptive and inferential statistics were utilized to assess the participants' responses. The mean score difference between the audiovisual mnemonics and control groups was determined by using a two-tailed unpaired t-test.

    RESULTS: The participants in the intervention group had statistically significant higher marks in the multiple-choice test as compared to the participants in the control group. The intervention group also spent a statistically significant shorter time to recall keywords in the oral recall test in comparison to the control group.

    CONCLUSION: The story-based audiovisual mnemonics method is more effective than the conventional text-reading method in promoting memory retention among medical students.

  14. NURUL AZLIANA MOHD YASIN, NOORHANI SYAHIDA KASIM, TUN NURUL AIMI MAT JAAFAR, RUMEAIDA MAT PIAH, WAHIDAH MOHD ARSHAAD, SITI AZIZAH MOHD NOR, et al.
    MyJurnal
    Present study investigates the genetic diversity and genetic distribution of the longtail tuna Thunnus tonggol collected from east Malaysia (Borneo states of Sabah and Sarawak) based on mitochondrial DNA D-loop sequence analysis. 58 fish samples were obtained, specifically from Kota Kinabalu, KK (n = 22), Miri, MR (n=20) and Bintulu, BT (n = 17). DNA template was isolated using the salt extraction method. Final length of 404 base pair (bp) D-loop sequences revealed 52 haplotypes that comprise of 77 variable sites (38 of parsimony informative and 39 singleton). A total of 20 haplotypes were found in KK, 19 haplotypes in MR and 16 haplotypes in BT. Molecular diversity indices revealed high haplotype diversity and low nucleotide diversity in all populations; KK (h = 0.9913 ± 0.0165, π = 0.00239 ± 0.0127), MR (h = 0.9942 ± 0.0193, π = 0.0226 ± 0.0121) and BT (h = 0.9926 ± 0.0230, π = 0.0196 ± 0.0171). Population comparison pairwise FST show that KK and BT were significantly genetically differentiated. The result from this study will be beneficial for fisheries management and also to provide information on the population genetics of T. tonggol in East Malaysian waters.
  15. Sabihah, A., Shamsuriani, M.J., Mohd Hisham, M.I., Afliza, A.B., Nidzwani, M.M., Tan, T.L., et al.
    Medicine & Health, 2020;15(1):88-95.
    MyJurnal
    Pendidikan kemahiran resusitasi kardiopulmonari (CPR) kepada orang awam sangat penting dalam merendahkan kadar kematian serangan jantung. American Heart Association mencadangkan kemahiran tersebut harus dimasukkan ke dalam kurikulum sekolah. Pelatih rakan sebaya adalah kaedah yang berkos rendah dan berkesan dalam mencapai objektif ini. Objektif kajian terkawal 3 bulan ini adalah untuk membandingkan keberkesanan pengajaran kompresi CPR antara rakan sebaya dan jurulatih Basic Life Support (BLS) kepada pelajar sekolah menengah. Peningkatan pengetahuan dan kemahiran psikomotor pemampatan CPR adalah hasil utama yang dinilai. Dua belas pelatih rakan sebaya berusia 16 tahun dan dua belas pelatih BLS telah direkrut dalam kajian ini. Kompresi CPR diajarkan kepada 36 pelajar sekolah menengah secara rawak oleh pelatih rakan sebaya (Kumpulan P) atau pelatih BLS (Kumpulan B). Pra-ujian, pasca ujian serta ujian pengekalan 3 bulan mengenai pengetahuan dan kemahiran psikomotor telah dijalankan. Tidak terdapat perbezaan yang signifikan secara statistik dalam skor min pengetahuan dan psikomotor pada pra-ujian, pasca ujian serta ujian pengekalan 3 bulan antara Kumpulan P dan Kumpulan B. Terdapat peningkatan skor pengetahuan yang signifikan antara pra-ujian dan pasca ujian dalam Kumpulan P (perbezaan min 5.8+2.7, p
  16. Ang BH, Ho WK, Wijaya E, Kwan PY, Ng PS, Yoon SY, et al.
    J Clin Oncol, 2022 May 10;40(14):1542-1551.
    PMID: 35143328 DOI: 10.1200/JCO.21.01647
    PURPOSE: With the development of poly (ADP-ribose) polymerase inhibitors for treatment of patients with cancer with an altered BRCA1 or BRCA2 gene, there is an urgent need to ensure that there are appropriate strategies for identifying mutation carriers while balancing the increased demand for and cost of cancer genetics services. To date, the majority of mutation prediction tools have been developed in women of European descent where the age and cancer-subtype distributions are different from that in Asian women.

    METHODS: In this study, we built a new model (Asian Risk Calculator) for estimating the likelihood of carrying a pathogenic variant in BRCA1 or BRCA2 gene, using germline BRCA genetic testing results in a cross-sectional population-based study of 8,162 Asian patients with breast cancer. We compared the model performance to existing mutation prediction models. The models were evaluated for discrimination and calibration.

    RESULTS: Asian Risk Calculator included age of diagnosis, ethnicity, bilateral breast cancer, tumor biomarkers, and family history of breast cancer or ovarian cancer as predictors. The inclusion of tumor grade improved significantly the model performance. The full model was calibrated (Hosmer-Lemeshow P value = .614) and discriminated well between BRCA and non-BRCA pathogenic variant carriers (area under receiver operating curve, 0.80; 95% CI, 0.75 to 0.84). Addition of grade to the existing clinical genetic testing criteria targeting patients with breast cancer age younger than 45 years reduced the proportion of patients referred for genetic counseling and testing from 37% to 33% (P value = .003), thereby improving the overall efficacy.

    CONCLUSION: Population-specific customization of mutation prediction models and clinical genetic testing criteria improved the accuracy of BRCA mutation prediction in Asian patients.

  17. Tan AH, Tan CT, Marras C, Loh KW, Wye Ho NW, Lim QH, et al.
    J Parkinsons Dis, 2015;5(4):865-79.
    PMID: 26444089 DOI: 10.3233/JPD-150594
    BACKGROUND: Public knowledge regarding Parkinson's disease (PD) is important to facilitate good health-seeking behavior, but the literature on this topic is scarce.
    OBJECTIVE: We aimed to explore the level of public knowledge regarding PD in a large multiethnic urban Asian cohort, and (as a secondary aim) in a smaller cohort of PD patients and caregivers.
    METHODS: A Knowledge of PD Questionnaire (KPDQ) was developed and administered to members of the Malaysian general public, and to PD patients and caregivers. The KPDQ tests recognition of PD symptoms and general knowledge regarding PD.
    RESULTS: 1,258 members of the general public completed the KPDQ. Tremor was the most widely recognized symptom (recognized by 79.0% of respondents); however, 83.7% incorrectly believed that all PD patients experience tremor. Memory problem was the most widely recognized NMS. Overall, motor symptoms were better recognized than NMS. Common misperceptions were that there is a cure for PD (49.8%) and that PD is usually familial (41.4%). Female gender, Chinese ethnicity, tertiary education, healthcare-related work, and knowing someone with PD were independently associated with higher KPDQ scores. PD patients (n = 116) and caregivers (n = 135) demonstrated superior knowledge compared with the general public group, but one-third of them believed that PD is currently curable.
    CONCLUSIONS: This is the only study on public knowledge regarding PD in Asia. Important gaps in knowledge were evident, which could present a barrier to early diagnosis and appropriate treatment of PD. This highlights the need for targeted education campaigns and further research in this area.
    KEYWORDS: Asia; Parkinson’s disease; awareness; cure; education; epidemiology; knowledge; stem cells
  18. Ng PS, Boonen RA, Wijaya E, Chong CE, Sharma M, Knaup S, et al.
    J Med Genet, 2022 May;59(5):481-491.
    PMID: 33811135 DOI: 10.1136/jmedgenet-2020-107471
    BACKGROUND: Rare protein-truncating variants (PTVs) in partner and localiser of BRCA2 (PALB2) confer increased risk to breast cancer, but relatively few studies have reported the prevalence in South-East Asian populations. Here, we describe the prevalence of rare variants in PALB2 in a population-based study of 7840 breast cancer cases and 7928 healthy Chinese, Malay and Indian women from Malaysia and Singapore, and describe the functional impact of germline missense variants identified in this population.

    METHODS: Mutation testing was performed on germline DNA (n=15 768) using targeted sequencing panels. The functional impact of missense variants was tested in mouse embryonic stem cell based functional assays.

    RESULTS: PTVs in PALB2 were found in 0.73% of breast cancer patients and 0.14% of healthy individuals (OR=5.44; 95% CI 2.85 to 10.39, p<0.0001). In contrast, rare missense variants in PALB2 were not associated with increased risk of breast cancer. Whereas PTVs were associated with later stage of presentation and higher-grade tumours, no significant association was observed with missense variants in PALB2. However, two novel rare missense variants (p.L1027R and p.G1043V) produced unstable proteins and resulted in a decrease in homologous recombination-mediated repair of DNA double-strand breaks.

    CONCLUSION: Despite genetic and lifestyle differences between Asian and other populations, the population prevalence of PALB2 PTVs and associated relative risk of breast cancer, are similar to those reported in European populations.

  19. Rahman M, Heng LY, Futra D, Chiang CP, Rashid ZA, Ling TL
    Nanoscale Res Lett, 2017 Aug 10;12(1):484.
    PMID: 28798991 DOI: 10.1186/s11671-017-2254-y
    The present research describes a simple method for the identification of the gender of arowana fish (Scleropages formosus). The DNA biosensor was able to detect specific DNA sequence at extremely low level down to atto M regimes. An electrochemical DNA biosensor based on acrylic microsphere-gold nanoparticle (AcMP-AuNP) hybrid composite was fabricated. Hydrophobic poly(n-butylacrylate-N-acryloxysuccinimide) microspheres were synthesised with a facile and well-established one-step photopolymerization procedure and physically adsorbed on the AuNPs at the surface of a carbon screen printed electrode (SPE). The DNA biosensor was constructed simply by grafting an aminated DNA probe on the succinimide functionalised AcMPs via a strong covalent attachment. DNA hybridisation response was determined by differential pulse voltammetry (DPV) technique using anthraquinone monosulphonic acid redox probe as an electroactive oligonucleotide label (Table 1). A low detection limit at 1.0 × 10(-18) M with a wide linear calibration range of 1.0 × 10(-18) to 1.0 × 10(-8) M (R (2) = 0.99) can be achieved by the proposed DNA biosensor under optimal conditions. Electrochemical detection of arowana DNA can be completed within 1 hour. Due to its small size and light weight, the developed DNA biosensor holds high promise for the development of functional kit for fish culture usage.
  20. Habiba U, Joo TC, Siddique TA, Salleh A, Ang BC, Afifi AM
    Int J Biol Macromol, 2017 Nov;104(Pt A):1133-1142.
    PMID: 28690164 DOI: 10.1016/j.ijbiomac.2017.07.007
    The chitosan/polyvinyl alcohol/TiO2 composite was synthesized. Two different degrees of deacetylation of chitosan were prepared by hydrolysis to compare the effectiveness of them. The composite was analyzed via field emission scanning electron microscopy, Fourier transform infrared, X-ray diffraction, thermal gravimetric analysis, weight loss test and adsorption study. The FTIR and XRD results proved the interaction among chitosan, PVA and TiO2 without any chemical reaction. It was found that, chitosan with higher degree of deacetylation has better stability. Furthermore, it also showed that higher DD of chitosan required less time to reach equilibrium for methyl orange. The adsorption followed the pseudo-second-order kinetic model. The Langmuir and Freundlich isotherm models were fitted well for isotherm study. Adsorption capacity was higher for the composite containing chitosan with higher DD. The dye removal rate was independent of the dye's initial concentration. The adsorption capacity was increased with temperature and it was found from reusability test that the composite containing chitosan with higher DD is more reusable. It was notable that adsorption capacity was even after 15 runs. Therefore, chitosan/PVA/TiO2 composite can be a very useful material for dye removal.
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