1.A review on antibacterial properties of Malaysian kelulut, tualang and acacia honey to prevent wound infectious bacteria
Mohd Amir Shahlan Mohd-Aspar ; Norhidayah Kamarudin ; Abdul Nasir Abd Ghafar ; Hadi Manap
Malaysian Journal of Microbiology 2024;20(no.2):263-275
This paper provides a comprehensive review of the antibacterial properties of three different types of Malaysian honey, namely kelulut, tualang and acacia, in preventing wound infecting bacteria. The antibacterial activity of these honey is mainly attributed to the physicochemical and phytochemical, which have been shown to be effective against a broad range of bacterial pathogens. This review discusses the effectiveness of honey in inhibiting the growth of various wound-infecting bacteria, factors that contributed to the antibacterial properties of the honey, mechanisms of action of honey in inhibiting bacterial growth and their potential for future use in clinical practice. The findings of this review suggest that Malaysian honey has the potential to be used as an alternative and complementary therapy to conventional antibiotics in the prevention and treatment of wound infections.
2.The roles of acidity, peroxide and non-peroxide compounds in antibacterial properties of Malaysian Kelulut, Tualang and Acacia honey
Mohd Amir Shahlan Mohd-Aspar ; Raihana Edros ; Siti Umairah Mokhtar ; Norhidayah Kamarudin
Malaysian Journal of Microbiology 2023;19(no.3):291-300
Aims:
In this study, three putative factors that commonly contribute to antibacterial properties in honey were determined, namely acidity (pH level), peroxide compounds and non-peroxide compounds.
Methodology and results:
Honey samples were prepared based on the known factors of acidity, peroxide compounds,and non-peroxide compounds to identify factors that contribute to the antibacterial properties of the honey based on agar diffusion assay. Liquid chromatography quadropole time-of-flight mass spectrometry was employed to detect and quantify the presence of acidic, peroxide, and non-peroxide compounds in the honey samples. Acidity and non-peroxide compounds were identified as the significant factors contributing to the antibacterial properties of Kelulut, Tualang and Acacia honey. No peroxide compound was detected in this study across all honey samples. In Kelulut, the presence of the additional compounds (reptoside, platycogenic acid and kauranoic acid) may explain its higher antibacterial properties against Escherichia coli and Staphylococcus aureus as compared to Tualang and Acacia honey based on the inhibition zones on the agar plates.
Conclusion, significance and impact of study
The presence of multiple antibacterial factors in honey is notably important as it gives an advantage of using honey compared to antibiotics in preventing the growth of a wide range of bacterial species with multiple modes of action.
3.Phytochemicals Screening and Anti-proliferative Activities of Anacardium occidentale Shoot Extract in Breast Cancer Cells
Pui Kee Chan ; Nurul Husna Shafie ; Mohd Amir Ashraf Meli ; Su Peng Loh
Malaysian Journal of Medicine and Health Sciences 2023;19(No.5):202-210
Introduction: Anacardium occidentale or cashew are popular traditional food and have raised research interest
for complementary cancer treatment. Cancer has become leading cause of death and treatment involved severe
side effects. In present study, we aim to study the anti-proliferative effects of cashew shoots in breast cancer (MDAMB-231), colorectal cancer (HT-29) and liver cancer (HepG2) cell lines. Methods: Cell lines were treated with 70%
ethanolic cashew extract for cytotoxicity test with MTT assay. AO/PI dual fluorescent assay and RNase/PI staining
were used to determine apoptosis induction effects. Phytochemicals screening was carried out by using gas chromatography mass spectrometry (GCMS) and liquid chromatography mass spectrometry (LCMS). Results: The cytotoxicity assay of cashew shoot extract demonstrated IC50 of 81.1 ± 0.11 μg/ml for MDA-MB-231, 307.5 ± 2.31 μg/ml
for HT-29 and 272.6 ± 1.91 μg/ml for HepG2 cell lines. The apoptotic bodies include chromatin condensation, cell
blebbing and nuclear fragmentation and apoptosis induction were shown by AO/PI staining. There was significant
increase of cell count in sub-G0 phase in MDA-MB-231 cell lines treated with cashew shoot extract. It was demonstrated that cashew shoot extract contained 38 compounds from GCMS such as sitosterol, tannin, pyrogallol, phenol
and 20 compounds from LCMS such as citric acid, gallic acid, myricetin and hinokiflavone that may give rise to its
anti-cancer effect. Conclusion: Cashew shoot extract demonstrated potential anti-cancer properties thus further study
is required to investigate its mechanism as anti-cancer agent.
4.Epidemiology of COVID-19 cases and vaccination coverage in Seremban District, Malaysia, 2021
Khairul Hafidz Alkhair Khairul Amin ; Nur Nadiatul Asyikin Bujang ; Siti Aishah Abas ; Nadiatul Ima Zulkifli ; Syuaib Aiman Amir ; Sharina Mohd Shah ; Veshny Ganesan ; Nurul Fazilah Aziz ; Muhammad Adli Jalaluddin ; Mohd Shahrol Abd Wahil ; Muhamad Hazizi Muhamad Hasani ; Noor Khalili Mohd Ali ; Mohammad Paid Yusof
Western Pacific Surveillance and Response 2023;14(2):01-07
Objective: Malaysia’s first case of coronavirus disease (COVID-19) was reported in January 2020, with the first case in the state of Negeri Sembilan diagnosed on 17 February 2020. The National COVID-19 Immunisation Programme commenced in early March 2021 in Negeri Sembilan. This study describes the COVID-19 cases and vaccination coverage in Seremban District, Negeri Sembilan, during 2021.
Methods: The demographic and clinical characteristics of COVID-19 cases and the district’s vaccination coverage were described. Vaccination coverage was plotted against COVID-19 cases on the epidemic curve. The chi-square test was used to examine the differences between the vaccination status of COVID-19 cases and severity category, hospitalization status and mortality.
Results: In Seremban District, there were 65 879 confirmed cases of COVID-19 in 2021. The data revealed that the
21–30-year age group had the highest proportion of cases (16 365; 24.8%), the majority of cases were male (58.3%), and most cases were from the sub-district of Ampangan (23.1%). The majority of cases were Malaysian. Over half (53.5%) were symptomatic, with fever (29.8%) and cough (22.8%) being the most frequently reported symptoms. COVID-19 vaccination status was significantly associated with severity category, hospitalization and mortality (P < 0.001 for all categories).
Discussion: This is the first study to describe two-dose vaccination coverage and the trend in COVID-19 cases in Seremban District. It was observed that COVID-19 cases had been reduced following more than 60.0% vaccination coverage.
5.Outbreak of foodborne disease in a boarding school, Negeri Sembilan state, Malaysia, 2021
Nur Nadiatul Asyikin Bujang ; Mohd Shahrol Abd Wahil ; Siti Aishah Abas ; Khairul Hafidz Alkhair Khairul Amin ; Nadiatul Ima Zulkifli ; Sharina Mohd Shah ; Nurul Fazilah Aziz ; Syuaib Aiman Amir Kamarudin ; Veshny Ganesan ; Nur Azieanie Zainuddin ; Muhammad Hazizi Muhamad Hasani ; Noor Khalili Mohd Ali ; Mohammad Paid Yusof
Western Pacific Surveillance and Response 2023;14(3):30-36
Objective: Foodborne disease is a significant global public health concern, with Bacillus cereus being a frequent cause of outbreaks. However, due to the relatively mild symptoms caused by infection with B. cereus, the shorter duration of illness and the challenges of testing for it in both stool and food samples, outbreaks are often underreported. This report describes the epidemiology of cases of foodborne illness, the causative agent and risk factors associated with an outbreak in a boarding school in Seremban district, Negeri Sembilan state, Malaysia, that occurred in November 2021.
Methods: Epidemiological, environmental and laboratory investigations were performed. A case was defined as any person with abdominal pain, vomiting or diarrhoea that occurred after consuming food served by the canteen at the school. The data were analysed using Microsoft Excel and the Statistical Package for the Social Sciences (SPSS).
Results: A total of 152 cases were identified among the 597 students, giving an attack rate of 25.5%. All cases were females aged 13–17 years. They presented with abdominal pain (100%), nausea (97.4%, 148), vomiting (78.3%, 119) or diarrhoea (61.8%, 94), or a combination of these. The mode of transmission of the outbreak was a continual common source. The foods associated with becoming a case were beef rendang (a dry curry) (odds ratio [OR]: 20.54, 95% CI: 4.89–86.30), rice (OR: 19.62, 95% CI: 2.62–147.01), rice cubes (OR: 18.17, 95% CI: 4.31–76.55) and vermicelli (OR: 17.02, 95% CI: 4.03–71.86). Cross-contamination and inadequate thawing and storage temperatures contributed to the outbreak.
Discussion: This outbreak of foodborne illness at a boarding school was likely caused by B. cereus. The findings highlight the importance of proper food preparation, temperature monitoring, hygiene practices among food handlers and compliance with food safety guidelines.
6.Knowledge and Acceptance of COVID-19 (SARS CoV2) Vaccination among Foundation students in a College in Kedah, Malaysia
Sook-Ching Chan ; Muhamad Shahril Aiman Azrizal ; Ahmad Haziq Danial Ahmad Kamal Ariffin ; Muhammad Ilham Fahmi Mohd Zukri ; Muhammad Arees Mohamed Anwar ; Abu Ubaidah Amir Muhamad Sharman ; Muhammad Afif Shah Mohammad Aziz Shah
Malaysian Journal of Medicine and Health Sciences 2022;18(No.5):79-85
Introduction: To combat the COVID-19 pandemic, Malaysia started vaccination of front-liners and adults in the community. The latter group might have insufficient knowledge to accept COVID-19 vaccination, therefore this research
was to assess the knowledge and acceptance of COVID-19 vaccination among youths, specifically students in a
Malaysian college. Methods: A cross-sectional study was conducted among 481 foundation students in Kolej MARA
Kulim (KMKU). The minimum sample size, using Epi Info was 214. Students answered an online questionnaire using
google form which included demographic data (age, gender) and ten questions on knowledge and acceptance of
COVID-19 vaccination. For knowledge questions, students answered “yes”, “no” or “don’t know”, correct answer
scoring 1. For acceptance questions, a 5-point Likert scale was used ranging from “strongly disagree” to “strongly
agree”. EXCEL and SPSS version 23 were used for analysis with Chi-square test done to test association (significant for
p-value <0.05). Results: The response rate was 65.1% with 313 students, (45.4% males, and 54.6% females) aged
18-19 years. The majority (83.7%) had satisfactory to excellent knowledge scores (mean = 6.66 (SD=2.299, 95%
CI 6.40-6.91), median = 7 (± IQR =3), while 16.3% obtained poor scores (≤ 4). The majority (90%) accepted vaccination. Higher knowledge scores were associated with higher acceptance rates in both genders (p-value= 0.000).
Significantly more females (90.6%) than males (80.3%) had positive attitude towards vaccination (p-value = 0.009).
Conclusions: The majority of the foundation students in KMKU were knowledgeable on COVID-19 vaccination and
willing to receive the vaccination against the novel coronavirus.
7.New insights on the utilization of ultrasonicated mustard seed cake: chemical composition and antagonistic potential for root-knot nematode,
Hera NADEEM ; Pieter MALAN ; Amir KHAN ; Mohd ASIF ; Mansoor AHMAD SIDDIQUI ; Simon TUHAFENI ANGOMBE ; Faheem AHMAD
Journal of Zhejiang University. Science. B 2021;22(7):563-574
This study focused, for the first time, on the effect of ultrasonic features on the extraction efficiency of secondary metabolites in mustard seed cake (MSC). The nematostatic potential of sonicated seed cake was examined against the second-stage juveniles (J2s) of root-knot nematode,
8.Mediating Role of Job Satisfaction in the Relationship between Job Performance and Organizational Commitment Components: A Study among Nurses at One Public University Hospital in Malaysia
Rami Otoum ; Intan Idiana Hassan ; Wan Muhamad Amir W Ahmad ; Mahmoud Al-Hussami ; Mohd Nazhari Mohd Nawi
Malaysian Journal of Medicine and Health Sciences 2021;17(No.3):197-204
Introduction: In light of the importance of the nurses’ performance in health services, this study was established
to examine the relationship of job performance with organizational commitment components and job satisfaction
among nurses. It is also, to examine the mediating effect of job satisfaction in the relationship between organizational
commitment components and job performance among nurses. Methods: This was a cross-sectional study conducted among nurses at Hospital Universiti Sains Malaysia. A sample size of 192 staff was selected using stratified and
systematic random sampling methods. The study data were collected using a questionnaire consists of three scales:
the organizational commitment scale of Allen and Meyer, the job satisfaction scale of Van Wood, and the task performance scale of Williams and Anderson. Besides, respondents were asked about their demographic profiles. The
response rate was 92% (n= 176). Regression analysis according to Baron and Kenny technique and Pearson correlation were conducted to get the study results. Results: The study results showed that all organizational commitment
components positively and significantly correlated with job satisfaction and job performance. Further, there is a positive relationship was found between job satisfaction and job performance. Moreover, findings of regression analysis
showed that job satisfaction partially mediates the relationship between all organizational commitment components
and job performance. Conclusion: Improving organizational commitment and job satisfaction among nurses could
increase their performance. Nurses’ managers should create suitable approaches and strategies to promote the organizational commitment and job satisfaction of nurses to the highest level, which in turn enhancing their job performance and the quality of care.
9.Facial Muscles and Its Modiolus: A Review of Embryology, Comparative Anatomy, Morphology and Applied Anatomy
Razif Abas ; Choy Ker Woon ; Aspalilah Alias ; Mohd Amir Kamaruzzaman ; Nor Farid Mohd Noor ; Ahmad Mukifza Harun ; Nurul Huda Mohd Nor
Malaysian Journal of Medicine and Health Sciences 2021;17(No.4):313-319
The modiolus of the face manifests the interesting landmark for facial muscles attachment. The strong connective
tissue fibres play an important role in the clinical setting, especially in the aesthetic and dental surgeries. In the fourth
week of intrauterine life, the development of the modiolus evolves in accordance with the growth of muscles of facial
expression. Microscopically, a white, tendinous structure with the thick irregular collagenous connective tissue of
collagen fibres predominance appeared to be the modiolus. Modiolus is morphologically a fibromuscular muscle
situated on the lateral border of the mouth. The formation of the nasolabial fold is important and a well-developed
modiolus provide a toned face. Several works of literature forementioned the number of facial muscles attached to
the modiolus but no definitive similarity are identified. This review summarizes the updated morphological features
and applied anatomy of the facial modiolus with its muscle attachment.
10.Isolation of Klebsiella pneumoniae from Sungai Skudai and in silico analysis of putative dehalogenase protein
Nur Aina Jamil ; Roswanira Abdul Wahab ; Amir Husni Mohd Shariff ; Fahrul Huyop
Malaysian Journal of Microbiology 2021;17(3):294-304
Aims:
The surplus use of herbicide Dalapon® contains 2,2-dichloropropionic acid (2,2-DCP) poses great danger to
human and ecosystem due to its toxicity. Hence, this study focused on the isolation and characterization of a
dehalogenase producing bacteria from Sungai Skudai, Johor, capable of utilizing 2,2-DCP as a carbon source and in
silico analysis of its putative dehalogenase.
Methodology and results:
Isolation of the target bacteria was done by using 2,2-DCP-enriched culture as the sole
carbon source that allows a bacterium to grow in 20 mM of 2,2-DCP at 30 °C with the corresponding doubling time of
8.89 ± 0.03 h. The isolated bacterium was then designated as Klebsiella pneumoniae strain YZ based on biochemical
tests and basic morphological examination. The full genome of K. pneumoniae strain KLPN_25 (accession number:
RRE04903) which obtained from NCBI database was screened for the presence of dehalogenase gene, assuming both
strains YZ and KLPN_25 were the same organisms. A putative dehalogenase gene was then identified as type II
dehalogenase from the genome sequence of strain KLPN_25. The protein structure of the type II dehalogenase of
KLPN_25 strain was then pairwise aligned with the crystal structure of L-2-haloacid dehalogenase (L-DEX)
Pseudomonas sp. strain YL as the template, revealing the existence of conserved amino acids residues, uniquely known
to participate in the dehalogenation mechanism. The finding thus implies that the amino acid residues of type II
dehalogenase possibly shares similar catalytic functions with the L-DEX.
Conclusion, significance and impact of the study
In conclusion, this study confirmed the presence of new
dehalogenase from the genus Klebsiella with potential to degrade 2,2-DCP from the river water. The structural
information of type II dehalogenase provides insights for future work in designing haloacid dehalogenases.
Klebsiella pneumoniae--isolation &
;
purification
;
Computer Simulation
;
Molecular Dynamics Simulation


Result Analysis
Print
Save
E-mail