1.Singapore clinical guideline on parenteral nutrition in adult patients in the acute hospital setting.
Johnathan Huey Ming LUM ; Hazel Ee Ling YEONG ; Pauleon Enjiu TAN ; Ennaliza SALAZAR ; Tingfeng LEE ; Yunn Cheng NG ; Janet Ngian Choo CHONG ; Pay Wen YONG ; Jeannie Peng Lan ONG ; Siao Ching GOOI ; Kristie Huirong FAN ; Weihao CHEN ; Mei Yoke LIM ; Kon Voi TAY ; Doris Hui Lan NG
Annals of the Academy of Medicine, Singapore 2025;54(6):350-369
INTRODUCTION:
The primary objective of this guideline is to establish evidence-based recommendations for the clinical use of parenteral nutrition (PN) in adult patients within the acute hospital setting in Singapore.
METHOD:
An expert workgroup, consisting of healthcare practitioners actively involved in clinical nutrition support across all public health institutions, systematically evaluated existing evidence and addressed clinical questions relating to PN therapy.
RESULTS:
This clinical practice guideline developed 30 recommendations for PN therapy, which cover these key aspects related to PN use: indications, patient assess-ment, titration and formulation of PN bags, access routes and devices, and monitoring and management of PN-related complications.
CONCLUSION
This guideline provides recommendations to ensure appropriate and safe clinical practice of PN therapy in adult patients within the acute hospital setting.
Humans
;
Singapore
;
Parenteral Nutrition/adverse effects*
;
Adult
2.Phase changes and quantity-quality transfer of raw material, calcined decoction pieces, and standard decoction of Ostreae Concha (Ostrea rivularis).
Hong-Yi ZHANG ; Jing-Wei ZHOU ; Jia-Wen LIU ; Wen-Bo FEI ; Shi-Ru HUANG ; Yu-Mei CHEN ; Chong-Yang LI ; Fei-Fei LI ; Qiao-Ling MA ; Fu WANG ; Yuan HU ; You-Ping LIU ; Shi-Lin CHEN ; Lin CHEN ; Hong-Ping CHEN
China Journal of Chinese Materia Medica 2025;50(5):1209-1223
The phase changes and quantity-quality transfer of 17 batches of Ostreae Concha(Ostrea rivularis) during the raw material-calcined decoction pieces-standard decoction process were analyzed. The content of calcium carbonate(CaCO_3), the main component, was determined by chemical titration, and the extract yield and transfer rate were calculated. The CaCO_3 content in the raw material, calcined decoction pieces, and standard decoction was 94.39%-98.80%, 95.03%-99.22%, and 84.58%-90.47%, respectively. The process of raw material to calcined decoction pieces showed the yield range of 96.85% to 98.55% and the CaCO_3 transfer rate range of 96.92% to 99.27%. The process of calcined decoction pieces to standard decoction showed the extract yield range of 2.86% to 5.48% and the CaCO_3 transfer rate range of 2.59% to 5.13%. The results of X-ray fluorescence(XRF) assay showed that the raw material, calcined decoction pieces, and standard decoction mainly contained Ca, Na, Mg, Si, Br, Cl, Al, Fe, Cr, Mn, and K. The chemometric results showed an increase in the relative content of Cr, Fe, and Si from raw material to calcined decoction pieces and an increase in the relative content of Mg, Al, Br, K, Cl, and Na from calcined decoction pieces to standard decoction. X-ray diffraction(XRD) was employed to establish XRD characteristic patterns of the raw material, calcined decoction pieces, and standard decoction. The XRD results showed that the main phase of all three was calcite, and no transformation of crystalline form or generation of new phase was observed. Fourier transform infrared spectroscopy(FTIR) was employed to establish the FTIR characteristic spectra of the raw material, calcined decoction pieces, and standard decoction. The FTIR results showed that the raw material had internal vibrations of O-H, C-H, C=O, C-O, and CO■ groups. Due to the loss of organic matter components after calcination, no information about the vibrations of C-H, C=O, and C-O groups was observed in the spectra of calcined decoction pieces and standard decoction. In summary, this study elucidated the quantity-quality transfer and phase changes in the raw material-calcined decoction pieces-standard decoction process by determining the CaCO_3 content, calculating the extract yield and transfer rate, and comparing the element changes, FTIR characteristic spectra, and XRD characteristic pattern. The results were reasonable and reliable, laying a foundation for the subsequent process research and quality control of the formula granules of calcined Ostreae Concha(O. rivularis Gould), and providing ideas and methods for the quality control of the whole process of raw material-decoction pieces-standard decoction-formula granules of Ostreae Concha and other testacean traditional Chinese medicine.
Drugs, Chinese Herbal/isolation & purification*
;
Calcium Carbonate/analysis*
;
Quality Control
3.Establishment of a standard DSS library for identification of original plants of medicinal materials in Chinese Pharmacopoeia.
Duo-Mei WANG ; Chao JIANG ; Jing-Zhe PU ; Chong HU ; Ling-Li CHEN ; Ya-Zhong ZHANG ; Yuan YUAN
China Journal of Chinese Materia Medica 2024;49(23):6249-6256
With the development of molecular pharmacognosy, the advantages of DNA molecular markers in the identification of original plants of Chinese medicinal materials are becoming increasingly significant. To compensate for the limitations of existing markers in the quality supervision of Chinese medicinal materials, our team has independently designed a new molecular marker named DNA signature sequence(DSS). This marker is a nucleotide sequence that only appears in a specific taxonomic unit, with a length of 40 bp and high identification accuracy. This article aims to screen and verify the DSS markers that can accurately identify the original plants of the medicinal materials included in the volume one of the Chinese Pharmacopoeia, establish the operating procedure for developing standard nucleotide sequences, and lay a foundation for the widespread application of polymerase chain reaction in the quality supervision of traditional Chinese medicine. Firstly, the Chloroplast Genome Information Resource(CGIR) was searched for the chloroplast genome sequences of the test samples, species of the same genus, and common background species. IdenDSS was used to obtain the DSS tags and specific identification primers of the tested species. After DNA extraction, PCR amplification, sequencing, and sequence alignments, a total of 203 DSS markers of Chinese medicinal materials were obtained for validation. The above sequences were uploaded to the Traditional Chinese Medicine Molecular Identification Platform(www.herbsdna.com), and a standard DSS library was established for identifying the original plants of medicinal materials, serving as an important tool for quality supervision of Chinese materia medica. On this basis, an operating procedure for DSS development is formed, laying a foundation for further DSS screening and application based on more diverse genome sequences.
Plants, Medicinal/classification*
;
DNA, Plant/genetics*
;
Drugs, Chinese Herbal
;
Pharmacopoeias as Topic
;
Genetic Markers
;
Medicine, Chinese Traditional
4.A summary of the Malaysian Clinical Practice Guidelines on the management of postmenopausal osteoporosis, 2022
Terence Ing WEI ONG ; Lee Ling LIM ; Siew Pheng CHAN ; Winnie Siew SWEE CHEE ; Alan Swee HOCK CH’NG ; Elizabeth GAR MIT CHONG ; Premitha DAMODARAN ; Fen Lee HEW ; Luqman bin IBRAHIM ; Hui Min KHOR ; Pauline Siew MEI LAI ; Joon Kiong LEE ; Ai Lee LIM ; Boon Ping LIM ; Sharmila Sunita PARAMASIVAM ; Jeyakantha RATNASINGAM ; Yew Siong SIOW ; Alexander Tong BOON TAN ; Nagammai THIAGARAJAN ; Swan Sim YEAP
Osteoporosis and Sarcopenia 2023;9(2):60-69
Objectives:
The aim of these Clinical Practice Guidelines is to provide evidence-based recommendations to assist healthcare providers in the screening, diagnosis and management of patients with postmenopausal osteoporosis (OP).
Methods:
A list of key clinical questions on the assessment, diagnosis and treatment of OP was formulated. A literature search using the PubMed, Medline, Cochrane Databases of Systematic Reviews, and OVID electronic databases identified all relevant articles on OP based on the key clinical questions, from 2014 onwards, to update from the 2015 edition. The articles were graded using the SIGN50 format. For each statement, studies with the highest level of evidence were used to frame the recommendation.
Results:
This article summarizes the diagnostic and treatment pathways for postmenopausal OP. Risk stratification of patients with OP encompasses clinical risk factors, bone mineral density measurements and FRAX risk estimates. Non-pharmacological measures including adequate calcium and vitamin D, regular exercise and falls prevention are recommended. Pharmacological measures depend on patients’ fracture risk status. Very high-risk individuals are recommended for treatment with an anabolic agent, if available, followed by an anti-resorptive agent. Alternatively, parenteral anti-resorptive agents can be used. High-risk individuals should be treated with anti-resorptive agents. In low-risk individuals, menopausal hormone replacement or selective estrogen receptor modulators can be used, if indicated. Patients should be assessed regularly to monitor treatment response and treatment adjusted, as appropriate.
Conclusions
The pathways for the management of postmenopausal OP in Malaysia have been updated. Incorporation of fracture risk stratification can guide appropriate treatment.
5.A potential mating-type biomarker to detect pathogenic Ganoderma species
Doris Lau ; Lee Weng Wah ; Chong Mei Ling ; Tee Sue Sean ; Jonathan Guyang Ling ; Anis Farhan Fatimi Ab Wahab ; Farah Diba Abu Bakar
Malaysian Journal of Microbiology 2022;18(3):331-337
Aims:
The basal stem rot disease in oil palm is caused by the pathogenic Ganoderma boninense, which is infectious after mating and forming dikaryotic hyphae. This study was aimed to generate a mating-type biomarker for the detection of pathogenic Ganoderma species.
Methodology and results:
Mating-type region of Ganoderma was amplified using polymerase chain reaction (PCR) and primers flanking the mating-type region of other basidiomycetes. Amplified fragments were sequenced and were identified as the Ganoderma pheromone receptor gene of matB locus called the gprb2 gene. Using this biomarker, the pheromone receptor gene was detected in a total of 107 pathogenic Ganoderma spp. while the gene was not detected in the non-pathogenic Ganoderma lucidum. Phylogenetic tree analyses of the gene fragment encoding the partial amino acid sequence of gprb2 showed clades of close evolutionary relationship among the 107 pathogenic Ganoderma spp. Phylogenetic analyses using deduced amino acid sequences of the Ganoderma pheromone receptor b2 gene, gprb2 with homologous pheromone receptors of other basidiomycetous fungi revealed high conservation of this pheromone receptor within their respective taxonomy.
Conclusion, significance and impact of study
A potential mating-type biomarker was successfully identified that could detect pathogenic Ganoderma spp. The research findings will be helpful in oil palm screening to detect pathogenic Ganoderma spp. and gain further insight into the role of the mating-type loci of Ganoderma towards its pathogenesis in causing the basal stem rot disease of oil palm.
Genes, Mating Type, Fungal
;
Ganoderma
6.A review of child sexual abuse cases presenting to a paediatric emergency department.
Magdalene H M LEE ; Sashikumar GANAPATHY ; Soo Mei LOW ; Christine L Q CHUA ; Shu Ling CHONG ; Eric MA ; Peter C Y WONG
Annals of the Academy of Medicine, Singapore 2021;50(7):527-535
INTRODUCTION:
Child sexual abuse (CSA) adversely affects a child's growth and well-being. This study aimed to describe the profile of children presenting to a tertiary paediatric emergency department(ED) with CSA.
METHODS:
Children 0-16 years old presenting to KK Women's and Children's Hospital ED from June 2016 to August 2020 with sexual abuse were retrospectively reviewed. We performed a secondary analysis on girls and stratified them by age <13 and ≥13 years old.
RESULTS:
There were 790 patients who made 833 visits for CSA. Victims were predominantly girls (747, 94.8%) and perpetrators were predominantly men (763, 96.6%). The abuse first occurred before the age of 13 years in 315 victims (39.9%). For 468 (59.2%), more than one incident occurred before presentation. Compared to girls ≥13 years old, girls <13 years old were more frequently abused by a family member (47.7% versus 8.0%,
CONCLUSION
The findings highlight common characteristics of CSA cases, and can aid the future identification and protection of vulnerable children. The fact that most children presented after more than one incident suggests the need to more closely monitor and protect potentially at-risk children.
Adolescent
;
Child
;
Child Abuse
;
Child Abuse, Sexual
;
Child, Preschool
;
Emergency Service, Hospital
;
Female
;
Humans
;
Infant
;
Infant, Newborn
;
Male
;
Parents
;
Retrospective Studies
7.Cerebral venous thrombosis in multi-ethnic patients from Malaysia
Mei-Ling Sharon TAI ; Khairul Azmi Abdul KADIR ; Chong Tin TAN ; Kay Sin TAN
Neurology Asia 2020;25(2):127-138
Background & Objectives: The literature on cerebral venous thrombosis (CVT) in South East Asia is
limited. The objectives were to evaluate the clinical profile, predisposing factors and clinical outcome
of the CVT patients in Malaysia. Methods: We conducted a retrospective descriptive study of the CVT
patients admitted to the neurology ward. The clinical presentation, predisposing factors, radiological
findings, treatment and prognostic characteristics were evaluated from the charts. Clinical outcome
on discharge and six months was measured by Modified Rankin Scale (mRS) scores. Poor outcome
and good outcome was defined as Modified Rankin Scale (mRS) scores of 3-6 and 0-2 respectively.
Results: Forty nine CVT patients who presented between 2007 and 2017 were recruited. The mean age
was 43.51±16.52. The patients consisted of 39 Malaysians (13 Indians, 12 Malays, 12 Chinese, one
Iban, one Eurasian descent), and ten non-Malaysians. Thirty (61.2%) patients were women. The most
common presenting complaint was headache (75.5%). Six percent had multiple risk factors, whereas
51% had idiopathic CVT. The most common predisposing factors were oral contraceptive pill use
(18.4%), followed by infection (12.2%), especially central nervous system (CNS) infection (6.1%);
11.8% had prothrombotic disorder. The most common location for CVT was superior sagittal sinus
(83.7%). On neuroimaging, 77.6% had parenchymal lesions, 53.1% had venous infarcts and 38.8% had intracerebral haemorrhage, one patient had CVT complicated by rare venous collateral channels. Poor outcome on discharge and at six months was 38.8% and 33.3% respectively. On univariate analysis, female gender (p=0.002), seizures (p=0.037) and cerebral oedema (p=0.018) were associated with poor functional outcome. On binary logistic regression, female gender (OR=14.50, 95% CI 2.10-99.94,p=0.003) and seizures (OR=6.54, 95% CI 1.33-32.07, p=0.017) were associated with poor outcome.
Conclusion: The CVT patients in this study had a higher proportion of CNS infections. Poor outcome
was independently associated with female gender and seizures.
8.Complementary and alternative medicine for migraine and tension-type headache among the Malaysians
Mei-Ling Sharon TAI ; Jun Fai YAP ; Han Lim CHIN ; Chong Tin TAN ; Cheng Beh GOH
Neurology Asia 2020;25(2):153-163
Background: The literature on complementary and alternative (CAM) therapies in South East Asia
is limited. The objective of the study was to evaluate the frequencies of CAM therapies in the
Malaysian patients with migraine and tension-type headache (TTH). We also assessed the reasons for
CAM use. Methods: This was a cross-sectional study. The study was conducted in a tertiary hospital
in Malaysia. Consecutive patients presenting with migraine and TTH to the neurology clinic were
recruited. Demographic characteristics were documented. Data on CAM use, including frequency and
the reasons was collected. Results: Six hundred and eighty five patients (365 TTH and 320 migraine)
were recruited. They consisted of 305 (44.5%) Malay, 174 (25.4%) Chinese, 169 (24.7%) Indian
and 37 (5.4%) patients from other ethnic groups. A total of 478 (69.8%) patients, comprising 266
(55.6%) patients with TTH and 212 (44.4%) patients with migraine used CAM therapies. The most
commonly used CAM therapies were medicated oil (355 patients, 51.8%) and massage (246 patients,
35.9%). The most common reasons for CAM use were reduction of pain (47.7 %), stress reduction
(34.9%), and “cooling” effect (27.4%). Thirteen (4.1%) patients with migraine practiced reflexology,
whereas 5 (1.4%) patients with TTH practiced reflexology (p=0.032). Twenty three (7.2%) patients
with migraine took vitamin supplements compared to 13 (3.6%) patients with TTH (p=0.039). On
univariate analysis, CAM use was significantly associated with ethnic groups (p=0.014), gender
(p<0.0001), age (p=0.004), salary (p=0.014), educational level (p=0.003), and headache subtypes
(p= 0.067). On logistic regression, married women were more likely to use CAM (OR=1.864, 95%
CI 1.216-2.858, p=0.004).
Conclusion: A large number of Malaysian headache patients used CAM. The most common reasons
were reduction of pain, stress and “heatiness”. Medicated oil was most commonly used, followed by
massage. Married women were more likely to use CAM, and this was the only determinant in this study.
9.Astrocyte elevated gene-1 serves as a target of miR542 to promote glioblastoma proliferation and invasion.
Chong LI ; Hai-Long LIU ; Yu-Mei ZHOU ; Yan-Chun SHI ; Zhi-Bin ZHANG ; Ling CHEN ; Shi-Yu FENG
Chinese Medical Journal 2020;133(20):2437-2443
BACKGROUND:
Epithelial to mesenchymal transition (EMT) is strongly linked with tumor invasion and metastasis, which performs a vital role in carcinogenesis and cancer progression. Emerging evidence suggests that microRNAs (miRNAs) expression are closely associated to EMT by regulating targeted genes. MiR542 has been found to be involved in the EMT program and bound up with various cancers. However, the functions of miR542 and its underlying mechanism in glioblastoma multiforme (GBM) remain largely unknown. In the current study, we investigated the effect of astrocyte elevated gene-1 (AEG-1) on U251 cells aggressiveness, proliferation, apoptosis, and cell cycle.
METHODS:
The screening of targeted miRNAs was performed, as well as the functional roles and mechanisms of miR542 were explored.
RESULTS:
MiR542 was selected as the target because of the most significantly differential expression and this high level of expression negatively correlated with cell migration and proliferation, which suggested that miR542 could be a novel tumor suppressor. Moreover, we confirmed that AEG-1 was a direct targeted gene of miR542 by luciferase activity assay, reverse transcription-polymerase chain reaction, and immunoblotting analysis. Furthermore, miR542 suppressed the expression of AEG-1, which upgraded the level of E-cadherin and degraded Vimentin expression contributing to retraining EMT.
CONCLUSION
The in vitro findings demonstrated that miR542 inhibited the migration and proliferation of U251 cells and suppressed EMT through targeting AEG-1, indicating that miR542 may be a potential anti-cancer target for GBM.
Astrocytes
;
Cell Line, Tumor
;
Cell Movement/genetics*
;
Cell Proliferation/genetics*
;
Epithelial-Mesenchymal Transition/genetics*
;
Gene Expression Regulation, Neoplastic
;
Glioblastoma/genetics*
;
Humans
;
MicroRNAs/genetics*
;
Neoplasm Invasiveness/genetics*
10.Moyamoya disease in a young woman with intraand extracranial vessels involvement on vessel wall imaging
TOH Tsun-Haw ; Kay-Sin TAN ; Norlisah RAMLI ; Kartini RAHMAT ; Chong-Tin TAN ; Kar-Foo LAU ; Mei-Ling Sharon TAI
Neurology Asia 2019;24(3):281-285
Moyamoya disease (MMD) was first described
in 1957 as “bilateral hypoplasia of internal
carotid arteries (ICAs)”.1
Aside from involving the intracranial arteries, MMD can also affect
extracranial ICAs and external carotid arteries
(ECAs).2-4 High resolution magnetic resonance
(MR) vessel wall imaging (VWI) is increasingly
being used to help with the diagnosis and
characterization of the condition focusing mainly
on intracranial vessels and extracranial ICAs.5-9
We present a case of a young woman with MMD,
demonstrating vessel wall enhancement of nonstenotic maxillary branches of bilateral ECAs.


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