2.Characterization of internal transcribed spacer-1 and apical membrane antigen-1 sequences provides insights into the genetic diversity of Eimeria tenella strains
Loo, S.-S. ; Mohd-Taib, F.S. ; Khoo, C.-K. ; Wan, K.-L.
Tropical Biomedicine 2022;39(No.3):476-482
Coccidiosis is a major recurring problem in the poultry industry and is caused by infection of one or more
of the seven Eimeria species known to infect chickens, with Eimeria tenella among the best studied
and economically important. Studies on the genetic diversity of E. tenella strains is essential for the
development of universally acceptable diagnostic markers and vaccines against the disease. Eimeria
tenella internal transcribed spacer-1 (ITS-1) and apical membrane antigen-1 (AMA-1) sequences from
different parts of the world are available in the public domain and therefore provide suitable comparative
markers for genetic diversity study. In this study, the ITS-1 and AMA-1 sequence diversity of two local
E. tenella strains, namely EtNSN6 and EtSGR6 were characterized. Both ITS-1 and AMA-1 sequences
for EtNSN6 and EtSGR6 were retrieved by mapping to their respective genome sequences generated
using next generation sequencing. Multiple sequence alignment of the ITS-1 and AMA-1 sequences
with selected homologous sequences revealed the presence of a total of five and 13 single nucleotide
polymorphisms (SNPs) respectively. All SNPs appeared to occur at random and did not show any unique
pattern based on geographical regions while no insertions and deletions (indels) was found to occur in
the aligned sequences. However, unique bases that defined certain strains were detected. Phylogenetics
analyses performed with Maximum Parsimony (MP) and Maximum Likelihood (ML) methods revealed
similar topology for the internal groups with all the E. tenella ITS-1 and AMA-1 sequences grouped in
the same clade supported by high bootstrap confidence. This confirmed that both EtNSN6 and EtSGR6
samples are E. tenella strains. Sequence comparison and phylogenetics analyses further suggest the
possibility of low genetic diversity among E. tenella strains.
3.The impact of COVID-19 pandemic on loss and grief.
Marcus K TAN ; Eik Chao CHIA ; Roger S MCINTYRE ; Roger C HO
Annals of the Academy of Medicine, Singapore 2022;51(10):591-592
Humans
;
COVID-19
;
Pandemics
;
Grief
;
SARS-CoV-2
7.Concordance of multiparameteric MRI and MRI ultrasound fusion-guided prostate biopsy.
Lyndon G. Loo ; Dennis P. Serrano ; Dennis G. Lusaya ; Francis C. Pile ; Jonathan S. Mendoza
Philippine Journal of Urology 2021;31(1):36-40
:
Multiparametric MRI (mpMRI) of the prostate is recently becoming more and more utilized in the detection of prostate cancer. Studies have shown that a higher PIRADS score correlated to a higher chance of obtaining a clinically significant prostate cancer but few studies have correlated PIRADS score to a specific Gleason score.
OBJECTIVE:
This study aimed to determine the concordance of PIRADS score to the Gleason score result of MRI ultrasound fusion-guided prostate biopsy.
METHODS:
All patients who had at least a PIRADS 2 lesion on mpMRI and underwent MRI ultrasound fusion-guided biopsy of the prostate from August 2018 up to November 2019 at St. Luke’s Medical Center, Global City were included in the study. An ambispective collection of data was done until the ideal sample size of greater than 100 positive lesions was obtained, in order to derive concordance rate.
RESULTS:
One hundred and sixty-two patients were included in the study with a total of 212 lesions analyzed. Forty three percent were benign while 57% were found to be malignant. PIRADS 2 lesions had zero high grade cancers, and the percentage steadily increased with 37.8% of PIRADS lesions considered high grade. Concordance was computed to be 0.38 showing a fair, direct concordance between PIRADS and Gleason score with significant result (p<0.05).
CONCLUSION
A result of PIRADS 4 or 5 lesion on mpMRI will have a higher urgency of doing a prostate biopsy and subsequent management to prevent unfavorable outcomes as opposed to PIRADS 3 lesions.
8.Pregnancy Outcomes in COVID-19: A Prospective Cohort Study in Singapore.
Citra Nz MATTAR ; Shirin KALIMUDDIN ; Sapna P SADARANGANI ; Shephali TAGORE ; Serene THAIN ; Koh Cheng THOON ; Eliane Y HONG ; Abhiram KANNEGANTI ; Chee Wai KU ; Grace Mf CHAN ; Kelvin Zx LEE ; Jeannie Jy YAP ; Shaun S TAN ; Benedict YAN ; Barnaby E YOUNG ; David C LYE ; Danielle E ANDERSON ; Liying YANG ; Lin Lin SU ; Jyoti SOMANI ; Lay Kok TAN ; Mahesh A CHOOLANI ; Jerry Ky CHAN
Annals of the Academy of Medicine, Singapore 2020;49(11):857-869
INTRODUCTION:
Pregnant women are reported to be at increased risk of severe coronavirus disease 2019 (COVID-19) due to underlying immunosuppression during pregnancy. However, the clinical course of COVID-19 in pregnancy and risk of vertical and horizontal transmission remain relatively unknown. We aim to describe and evaluate outcomes in pregnant women with COVID-19 in Singapore.
METHODS:
Prospective observational study of 16 pregnant patients admitted for COVID-19 to 4 tertiary hospitals in Singapore. Outcomes included severe disease, pregnancy loss, and vertical and horizontal transmission.
RESULTS:
Of the 16 patients, 37.5%, 43.8% and 18.7% were infected in the first, second and third trimesters, respectively. Two gravidas aged ≥35 years (12.5%) developed severe pneumonia; one patient (body mass index 32.9kg/m2) required transfer to intensive care. The median duration of acute infection was 19 days; one patient remained reverse transcription polymerase chain reaction (RT-PCR) positive >11 weeks from diagnosis. There were no maternal mortalities. Five pregnancies produced term live-births while 2 spontaneous miscarriages occurred at 11 and 23 weeks. RT-PCR of breast milk and maternal and neonatal samples taken at birth were negative; placenta and cord histology showed non-specific inflammation; and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-specific immunoglobulins were elevated in paired maternal and umbilical cord blood (n=5).
CONCLUSION
The majority of COVID-19 infected pregnant women had mild disease and only 2 women with risk factors (obesity, older age) had severe infection; this represents a slightly higher incidence than observed in age-matched non-pregnant women. Among the women who delivered, there was no definitive evidence of mother-to-child transmission via breast milk or placenta.
Abortion, Spontaneous/epidemiology*
;
Adult
;
COVID-19/transmission*
;
COVID-19 Nucleic Acid Testing
;
COVID-19 Serological Testing
;
Cohort Studies
;
Disease Transmission, Infectious/statistics & numerical data*
;
Female
;
Fetal Blood/immunology*
;
Humans
;
Infectious Disease Transmission, Vertical/statistics & numerical data*
;
Live Birth/epidemiology*
;
Maternal Age
;
Milk, Human/virology*
;
Obesity, Maternal/epidemiology*
;
Placenta/pathology*
;
Pregnancy
;
Pregnancy Complications, Infectious/physiopathology*
;
Pregnancy Outcome/epidemiology*
;
Pregnancy Trimester, First
;
Pregnancy Trimester, Second
;
Prospective Studies
;
RNA, Viral/analysis*
;
Risk Factors
;
SARS-CoV-2
;
Severity of Illness Index
;
Singapore/epidemiology*
;
Umbilical Cord/pathology*
;
Young Adult
9.Attitudes about and practices for skin cancer prevention among patients with dermatological issues in Hanoi, Vietnam: a cross-sectional study.
Trang H T NGUYEN ; Bach X TRAN ; Sau H NGUYEN ; Carl A LATKIN ; Cuong T NGUYEN ; Son H NGUYEN ; Hai Q PHAM ; Cyrus S H HO ; Roger C M HO ; Jin-Kyoung OH
Environmental Health and Preventive Medicine 2020;25(1):35-35
BACKGROUND:
Raising awareness and educating people regarding practices for skin cancer or melanoma prevention are critical in the context of the adversely increasing effects of global climate change. This study aimed to explore the knowledge, attitudes, and practices regarding skin cancer prevention and to determine the associated factors to knowledge, attitudes, and practices among dermatological patients in Vietnam.
METHODS:
This cross-sectional study included 590 dermatological patients between 18 and 82 years of age, who received an examination or treatment from the National Hospital of Dermatology in Hanoi, Vietnam, from September to December 2018. The respondents' attitudes on skin cancer and cancer prevention were assessed via face-to-face interviews with a structured questionnaire conducted by trained interviewers.
RESULTS:
Of the 590 respondents, the majority of people had correct responses to the question regarding skin cancer knowledge. Among the total participants, 39.8% thought that they were at risk of skin cancer, and 13.8% believed their occupation increased their skin cancer risk. The majority of respondents used hats (94.9%) and sunscreen skin coats (89.5%) and went into the shade (86.3%) when exposed to the sun. Women were less likely to be aware of their skin cancer risk but were more likely to practice prevention behaviors.
CONCLUSION
Our results show that dermatological patients have acceptable knowledge towards skin cancer prevention, but still need to change their behavior to prevent the risk of skin cancer. This study highlights the importance of education to raise awareness regarding skin cancer in order to promote practice prevention strategies for skin cancer in Vietnam.
Adult
;
Aged
;
Aged, 80 and over
;
Cities
;
Cross-Sectional Studies
;
Female
;
Health Knowledge, Attitudes, Practice
;
Humans
;
Male
;
Melanoma
;
prevention & control
;
psychology
;
Middle Aged
;
Skin Diseases
;
etiology
;
Skin Neoplasms
;
prevention & control
;
psychology
;
Vietnam
;
Young Adult
10.The Practice of Gastrointestinal Motility Laboratory During COVID-19 Pandemic: Position Statements of the Asian Neurogastroenterology and Motility Association (ANMA-GML-COVID-19 Position Statements)
Kewin T H SIAH ; M Masudur RAHMAN ; Andrew M L ONG ; Alex Y S SOH ; Yeong Yeh LEE ; Yinglian XIAO ; Sanjeev SACHDEVA ; Kee Wook JUNG ; Yen-Po WANG ; Tadayuki OSHIMA ; Tanisa PATCHARATRAKUL ; Ping-Huei TSENG ; Omesh GOYAL ; Junxiong PANG ; Christopher K C LAI ; Jung Ho PARK ; Sanjiv MAHADEVA ; Yu Kyung CHO ; Justin C Y WU ; Uday C GHOSHAL ; Hiroto MIWA
Journal of Neurogastroenterology and Motility 2020;26(3):299-310
During the Coronavirus Disease 2019 (COVID-19) pandemic, practices of gastrointestinal procedures within the digestive tract require special precautions due to the risk of contraction of severe acute respiratoy syndrome coronavirus-2 (SARS-CoV-2) infection. Many procedures in the gastrointestinal motility laboratory may be considered moderate to high-risk for viral transmission. Healthcare staff working in gastrointestinal motility laboratories are frequently exposed to splashes, air droplets, mucus, or saliva during the procedures. Moreover, some are aerosol-generating and thus have a high risk of viral transmission. There are multiple guidelines on the practices of gastrointestinal endoscopy during this pandemic. However, such guidelines are still lacking and urgently needed for the practice of gastrointestinal motility laboratories. Hence, the Asian Neurogastroenterology and Motility Association had organized a group of gastrointestinal motility experts and infectious disease specialists to produce a position statement paper based-on current available evidence and consensus opinion with aims to provide a clear guidance on the practices of gastrointestinal motility laboratories during the COVID-19 pandemic. This guideline covers a wide range of topics on gastrointestinal motility activities from scheduling a motility test, the precautions at different steps of the procedure to disinfection for the safety and well-being of the patients and the healthcare workers. These practices may vary in different countries depending on the stages of the pandemic, local or institutional policy, and the availability of healthcare resources. This guideline is useful when the transmission rate of SARS-CoV-2 is high. It may change rapidly depending on the situation of the epidemic and when new evidence becomes available.


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