1.Dietary intake, diet quality and nutritional status of homeless children: A cross-sectional study
Kar Wen Yong ; Asma&rsquo ; Ali ; Hayati Mohd Yusof ; Aziz Yusof ; Michelle Mun Chieng Tan
Malaysian Journal of Nutrition 2024;30(3):297-307
The increasing number of homeless children is concerning. This
study aimed to assess the dietary intake, diet quality, and nutritional status of
homeless children in Klang Valley, as well as the relationship between diet quality
and nutritional status. Methods: Approximately 120 homeless children aged 7 to
12 years from four locations in Klang Valley were enrolled. Their dietary intake
and nutritional status were assessed using a two-day 24-hour dietary recall and
body mass index-for-age, respectively. The Healthy Eating Index (HEI) was used to
examine diet quality. Results: Prevalence of normal weight respondents was 58.3%
(mean±SD: -0.79±1.80), with 25.0% classified as moderately and severely thin. Mean
energy intake was significantly lower than recommended nutrient intakes (RNI)
(p<0.050), while protein intake was higher (p<0.050). Calcium and zinc intakes
were also significantly lower (p<0.001). Boys aged 7-9 years had significantly higher
iron intake (median=11.6, IQR=8.7 mg, p=0.003), whereas girls aged 10-12 years
had significantly lower intakes of iron (mean±SD=11.4±5.1, 11.1±4.7) and vitamin A
(median=416.6, IQR=450.4 µgRE, p<0.001 for both). Mean HEI score was 51.30±6.78,
indicating a need for diet quality improvement. No significant association between
diet quality and nutritional status was observed (p=0.380). Conclusion: This study
provided insights into dietary intake, diet quality, and nutritional status of homeless
children. Further research is vital to shape evidence-based nutrition interventions.
2.The effect of lactic acid fermentation of Bactronophorus thoracites on antimicrobial activity against rice pathogens
Siti Norazura Jamal ; Belal J. Muhialdin ; Noor Baity Saidi ; Lai Kok Song ; Mohd Termizi Yusof ; Dhilia Udie Lamasudin
Malaysian Journal of Microbiology 2022;18(6):592-601
Aims:
Leaf blight disease caused by Pantoea spp. reduces rice yields in numerous nations. However, the exact strategy to combat Pantoea spp. has yet to be determined. Bactronophorus thoracites is a promising source of natural antimicrobial agents due to their potential as a substrate to generate peptides with high antimicrobial activity. This study determined the effects of lactic acid fermentation using Lactobacillus casei ATCC334 as a starter culture on antimicrobial activity against rice pathogens, proximate composition, and amino acid profiles from B. thoracites crude extract.
Methodology and results:
Bactronophorus thoracites was washed and deshelled to collect the flesh and homogenised at 4 °C before freeze-drying. The freeze-dried samples were fermented with L. casei for 4 to 8 days at 37 °C. The antimicrobial activity, MIC and MBC were determined using a spectrometer. The fermented protein was subjected to proximate and amino acid analyses. The antimicrobial activity of fermented B. thoracites protein (FBTP) was significantly (p<0.05) decreased with the increased fermentation days (from 4 to 8 days). The antimicrobial activity was also increased when the glucose concentration increased from 2% to 3%. However, raising the glucose concentration to 4% decreased the antimicrobial activity. The antimicrobial activity was significantly (p<0.05) increased when the substratewater (S/W) ratio increased from 0.84% to 0.96%. The FBTP (4 days, 3% glucose concentration and 0.96% S/W ratio) showed high antimicrobial activity against Pantoea ananatis and P. stewartii. The MIC and MBC values for FBTP were 500 μg/mL and 250 μg/mL against P. ananatis and P. stewartii. The zones of inhibition value for FBTP were 16.0 ± 0.5 mm (1000 μg/mL) and 9.33 ± 0.57 mm (500 μg/mL) for P. ananatis, and 11.7 ± 0.61 mm (1000 μg/mL), 9.33 ± 0.58 mm (500 μg/mL) and 7.17 ± 0.77 mm (250 μg/mL) for P. stewartii. The proximate composition and amino acid profiles of the freeze-dried protein hydrolysate powder were characterised. FBTP produced a higher value of protein (61.56%) and ash (32.38%) and a lower value of total fat (0.273%) and carbohydrates (6.27%) than the B. thoracites crude extract. Total amino acid content was 39.480 g/100 g in B. thoracites crude extract and 155.442 g/100 g in FBTP. The essential amino acid glutamine was the most abundant in B. thoracites crude extract and methionine in FBTP.
Conclusion, significance and impact of study
This study showed that lactic acid fermentation could produce FBTP using L. casei with improved functional characteristics and as a source of a natural antimicrobial agent against rice pathogens.
Lactic Acid
;
Anti-Infective Agents
3.Malaysian clinical practice guidelines for management of diabetic foot: A synopsis for the primary care physician
Tharumaraja Thiruselvam ; Aminudin Che Ahmad ; Wong Ping Foo ; Afiza Hanun Ahmad@Hamid ; Mohd Idham Hasan ; Mohd Yazid Bajuri ; Gurmeet Singh s/o Sewa Singh ; Vijiya Mala Valayatham ; Siti Norzalilah Abdul Majid ; Hafizan Mohd Tajri ; Masfiza Abdul Hamid ; Ainol Haniza Kherul Anuwar ; Mohd Aminuddin Mohd Yusof
Malaysian Family Physician 2021;16(1):103-113
Diabetic foot requires careful attention and coordinated management by a dedicated team. Screening, prevention, adequate assessment, and appropriate referral are crucial to prevent complications. Multimodal treatment and rehabilitation are recommended to ensure a better quality of life and reduction of amputation rate in people with diabetic foot.
4.Cross-cultural adaptation of the General Functioning Scale of the family into the Malay language
Muneer Gohar Babar ; Sobia Bilal ; Zamros Yuzadi Mohd Yusof ; Karuthan Chinna ; Jennifer Geraldine Doss ; Allan Pau
International e-Journal of Science, Medicine and Education 2021;15(3):46-56
Introduction:
The McMaster Family Assessment Device (FAD) has been used to measure family functioning in several cultures. The FAD’s 12-item General Functioning Subscale (GF12) provides a general assessment of family functioning. This study aims to assess the cross-cultural adaptation of the FADGF12 scale in the Malaysian population.
Methods:
The translation and adaptation procedure of the Malay GF12 was based on the dual-panel methodology. This involved a bilingual panel (providing the initial translation into the Malay language) followed by a lay panel (where items are assessed for comprehension and acceptability). A mixed-methods approach with exploratory sequential study design was employed. This study used a mixed-methods approach, combining a quantitative survey of the Malay version of GF12 and a qualitative focus group analysis of dual-panel members.
Results:
Two hundred and fifty-one parents who have children attending Tadikas (pre-school) responded to the Malay GF12. In the reliability analysis, the internal consistency value was good; in the test-retest analysis, the intra-class correlation values were more than 0.7. In the exploratory factor analysis, two factors were extracted. In the confirmatory factor analysis, a single factor 12-item model did not fit well. Alternatively, a 2-factor-6-item model showed sufficient fit. The two constructs are comprised of Positive and Negative Items.
Conclusion
The Malay version of GF12 has adequate psychometric properties to measure family functioning in the Malay speaking population.
Factor Analysis, Statistical
5.Leptospirosis: An insight into community structure of small mammal’s host in urban environment
Mohd-Taib, F.S. ; Ishak, S.N. ; Yusof, M.A. ; Azhari, N.N. ; Md-Lasim, A. ; Md. Nor, S. ; Mohd-Sah, S.A. ; Neela, V.K.
Tropical Biomedicine 2020;37(No.1):142-154
Leptospirosis is a zoonotic disease caused by bacteria of the genus Leptospira and most often acquired through contact with environments contaminated with leptospires shed in the urine of infected mammals. In urban environment, rodents are well-known as the main carriers of this bacteria, however there were no intensive study on the population structure of these animals, and how it associated with this disease. Hence, we use a case study from an outbreak in a residential area in Selangor, Malaysia, to investigate how community structure of small mammals, associated with the prevalence of Leptospira. One hundred cage traps were placed randomly in and around these houses in five phases with two months interval for a year. Community structures (species, sex, and age) were assigned for each individual, prior to screening for pathogenic Leptospira, using a partial lipL32 gene from the kidney samples. 185 small mammals from four species were captured, Rattus norvegicus (74.5%, N=138), R. rattus (20%, N=37), Tupaia glis (5%, N=9), and Suncus murinus (0.5%, N=1). From this number, 29 individuals were found PCR positive for pathogenic Leptospira (R. norvegicus, N=20; R. rattus, N=6; T. glis, N=2; S. murinus, N=1). The study shows that Leptospira occurrence in the small mammals were significantly correlated to age category and sampling phases, with Spearman Correlation (rs) p=0.02 and p=0.04 respectively. Adult individuals were significantly more prevalent with Leptospira infection, whereby March and June were found to associate with higher Leptospira prevalent among the small mammals, potentially coincide with low rainfall and relative humidity level. This information is important in designing a specific control method for rodents in Leptospira outbreak areas. In addition, intensive sampling and regular cleaning effort were found to significantly reduce the small mammal Leptospira reservoir, thus should be implemented in intervention strategies in the urban environment.
6.Dengue protease inhibition activity of selected Malaysian medicinal herbs
Salleh, H.M. ; Chong, S.-L. ; Othman, R. ; Hazni, H. ; Ahmad, K. ; Mohd Yusof, M.Y.Z. ; Fauzi, N.W. ; Wahab, H.A. ; Liew, S.Y. ; Awang, K.
Tropical Biomedicine 2019;36(2):357-366
Dengue fever is one of major health problem around the world including Malaysia.
It is caused by the arthropode-borne flavivirus and transmitted by the bite of the Aedes
aegypti or Aedes albopictus mosquito infected with one of the four dengue virus serotypes
(DENV-1, DENV-2, DENV-3, or DENV-4). In this study, a screening exercise of various
Malaysian medicinal plants showed that the extracts of Lawsonia inermis, Dryobalanops
aromatica, Punica granatum, Zizyphus jujuba Lam. and Zingiber zerumbet exhibited
potent inhibitory activity against NS2B-NS3 serine protease. The methanol extracts of
Dryobalanops aromatica showed inhibition of 99.70 % at concentration of 200 μg/mL with
IC50 value of 0.30 ± 0.16 μg/mL.
7.Antiviral activity of a standardized root water extract of Eurycoma longifolia (Physta®) against dengue virus
George, A. ; Zandi, K. ; Biggins, J. ; Chinnappan, S. ; Hassandarvish, P. ; Yusof, A.
Tropical Biomedicine 2019;36(2):412-421
The aim of this study was to investigate the antiviral property of Eurycoma
longifolia Jack (EL) against dengue virus. A propriety standardized extract of Eurycoma
longifolia Jack (Physta®) was tested for anti-viral activity after viral adsorption in Vero
cell line. Viral yield was measured by qRT-PCR in four serotypes of dengue virus. The
antiviral activity was further investigated in an in vivo AG129 mouse model for dengue
inhibitory candidates. 100 mg/kg EL extract was fed twice daily and challenged with a
lethal dose of (~1x105 PFU per mouse) of DENV-2 over a period of six days. Antiviral
activity with IC50 of 33.84, 33.55, 58.35 and 119 μg/ml for DENV-1, DENV-2, DENV-3 and
DENV-4 serotypes respectively was observed. The selectivity index (SI) values determined
as the ratio of cytotoxic concentration (CC50) to inhibitory concentration (IC50) was the
lowest for DENV-2 at 28.9. The dengue virus (DENV) replication measured by qRT-PCR
showed a reduction of 100% for DENV-1, DENV-2, DENV-3 and 80% for DENV-4 at day 2 of
exposure. In the in vivo AG129 mouse model, a lower weight reduction, 30% lower viral
load and 12% higher platelet in the extract group compared to the control was observed at
day 6. The extract of E. longifolia has potential anti-dengue properties with improving
trends in platelet counts. E. longifolia supplementation is potentially a two-pronged
approach in treating dengue fever.
8.ESTABLISHING FREEZE DRYING PROCESS FOR CORTICAL AND CANCELLOUS BONE ALLOGRAFT CUBES
Ariffin AA, ; Chan HH ; Yusof N ; Mohd S ; Ramalingam S ; Ng WM ; Mansor A.
Journal of University of Malaya Medical Centre 2019;22(1):66-71
Freeze drying is a dehydration method to dry bone under freezing environment, enabling removal of water with no or minimial effects on bone strength and durability. Larger size bones obviously require longer freeze drying time to reduce water content to the required level for long term storage at room temperature. For small size bone cubes or chips, it is a normal practice to pool cortical and cancellous bones for freeze drying. The study was aimed at determining if different type of bones of the same size influence the drying time. Human bone cubes of 10 mm x 10 mm x 10 mm were prepared from cortical bone of tibiae and cancellous bone from femoral heads. The bone cubes were freeze dried to reduce water content to less than 6%. Moisture content was monitored using gravimetric method.Weight and density of cortical bone were significantly higher than cancellous bone despite of having similar small size (p<0.05). Cortical bones (density 2.05 ± 0.35 g/cm3) with initial water content of 10.93% required 5 hours to freeze dry, while cancellous bone cubes (density 0.72 ± 0.44 g/cm3) with initial water content of 78.95% required only 1.87 hours. This study confirmed that the structure hence density of human bone cubes determine the freeze drying time. Therefore in the standard operating procedure for freeze drying of bone allograft cubes, high density cortical bone cubes and low density cancellous bone cubes must be freeze dried separately despite being of similar small size
9.Knowledge on Bone Banking among Participants in an Orthopaedic Conference: A Preliminary Survey
Mohd S, BSc, Yusof N, PhD, Ramalingam S, BSc, Ng WM, MS Orth, Mansor A, MS Orth
Malaysian Orthopaedic Journal 2017;11(2):1-6
Despite increasing use of bone graft in Malaysia, there was
still lack of data to quantify knowledge level on bone
banking among orthopaedic community who are involved in
transplantation related work. Therefore, a survey on
awareness in tissue banking specifically bone banking, usage
and choice of bone grafts was conducted. From 80
respondents, 82.5% were aware about tissue banking
however only 12.5% knew of the existence of tissue banks in
Malaysia. Femoral head was the bone allograft most often
used as a substitute to autograft. Only 34.8% respondents
preferred irradiated bone grafts whilst 46.9% preferred nonirradiated,
indicating the need to educate the importance of
radiation for sterilising tissues. Exhibition was the most
preferred medium for awareness programme to disseminate
information about bone banking in the orthopaedic
community. The professional awareness is necessary to
increase the knowledge on the use of bone graft, hence to
increase bone transplantation for musculoskeletal surgeries
in the country.
10.The synthetic molecules YK51 and YK73 attenuate replication of dengue virus serotype 2
Gan, C.S. ; Yusof, R. ; Othman, S.
Tropical Biomedicine 2017;34(2):270-283
Dengue virus infection has been posing alarming economic and social burden on
affected nations. It is estimated that 50-100 million dengue infections occur annually with
over 2.5 billion people at risk for endemic transmission. In the effort to develop effective
antiviral agents, we previously reported potential antiviral activities from selected array of
natural products and compounds against dengue virus serotype 2 (DV2). In this study, we
report the synthesis of two efficacious novel compounds, YK51 and YK73, and their activities
against DV2 replication. Both compounds were chemically synthesised from nicotinic acid
using a modified method for the synthesis of dihydropyridine. The products were tested with
cell-based assays against DV2 followed by a serine protease assay. As a result, both YK51 and
YK73 exhibited intriguing antiviral properties with EC50 of 3.2 and 2.4 µM, respectively. In
addition, YK51 and YK73 were found to attenuate the synthesis of intracellular viral RNA and
protect the switching of non-classic mechanism of protein translation. These compounds
demonstrated inhibitory properties toward the activity of DV2 serine protease in a dose
dependent manner. These findings demonstrate that both YK51 and YK73 serve as DV2 serine
protease inhibitors that abrogate viral RNA synthesis and translation. Further investigation
on these compounds to corroborate its therapeutic properties towards dengue is warranted.


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