2.Maternal Separation Does Not Produce a Significant Behavioral Change in Mice.
Shawn TAN ; Hin San HO ; Anna Yoonsu SONG ; Joey LOW ; Hyunsoo Shawn JE
Experimental Neurobiology 2017;26(6):390-398
Early life adversities together with genetic predispositions have been associated with elevated risks of neuropsychiatric disorders during later life. In order to investigate the underlying mechanisms, many chronic, early-life stress paradigms in multiple animal models have been developed. Previously, studies reported that maternal separation (MS) in the early postnatal stages triggers depression-and/or anxiety-like behaviors in rats. However, similar studies using mice have reported inconsistent behavioral outcomes. In this study, we sought to assess behavioral outcomes from two different early-life stress paradigms; a conventional 3-hour MS and a maternal separation with early weaning (MSEW) paradigm using C57BL/6J male mice with independent cohorts. Our data demonstrated that both MS and MSEW paradigms did not produce reported behavioral anomalies. Therefore, MS paradigms in mice require further validation and modification.
Animals
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Anxiety
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Cohort Studies
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Depression
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Genetic Predisposition to Disease
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Humans
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Male
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Mice*
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Models, Animal
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Rats
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Weaning
3.Clinics in diagnostic imaging (179). Severe rhabdomyolysis complicated by myonecrosis.
Shi Xian Shawn KOK ; Tien Jin TAN
Singapore medical journal 2017;58(8):467-472
A 32-year-old man presented to the emergency department with severe right lower limb pain and swelling of three days' duration. He had multiple prior admissions for recurrent seizures and suicide attempts. Markedly elevated serum creatine kinase levels and urine myoglobinuria were consistent with a diagnosis of rhabdomyolysis. Initial magnetic resonance imaging of the right lower limb revealed diffuse muscle oedema and features of myositis in the gluteal muscles and the adductor, anterior and posterior compartments of the thigh. Follow-up magnetic resonance imaging performed 11 days later showed interval development of areas of myonecrosis and haemorrhage. The causes, clinical presentation and imaging features of rhabdomyolysis are discussed.
4.Of migration, macaques, mice and men.
Jun-Yang TAY ; Shawn VASOO ; Yee-Sin LEO
Singapore medical journal 2021;62(11):562-562
6.Positive RT-PCR detected in patients recovered from COVID-19.
Glorijoy Shi En TAN ; Ying DING ; Lin CUI ; Tze Minn MAK ; Chee Keng MOK ; Asok KURUP ; Purnima PARTHASARATHY ; Wan Ni CHIA ; Lin Fa WANG ; Raymond T P LIN ; Yee Sin LEO ; Shawn VASOO
Annals of the Academy of Medicine, Singapore 2021;50(2):191-194
8.Clinics in diagnostic imaging (199). Pyometra.
Wei Ming Ian TAY ; Manickam SUBRAMANIAN ; Dinesh CHINCHURE ; Shi Xian Shawn KOK
Singapore medical journal 2019;60(9):487-490
A 92-year-old woman presented to the emergency department with urinary symptoms, fever and suprapubic tenderness. Her inflammatory markers were raised. Urine and blood cultures were negative. Computed tomography performed to look for a source of sepsis showed distension of the uterine cavity with high-attenuation fluid, an air-fluid level and gas locules along the uterine wall. The causes, clinical presentation and imaging features of pyometra are discussed.
9.Thoracolumbar Injury Classification and Severity Score Is Predictive of Perioperative Adverse Events in Operatively Treated Thoracic and Lumbar Fractures
Gabriel LIU ; Jiong Hao TAN ; Jun Cheong KONG ; Yong Hao Joel TAN ; Nishant KUMAR ; Shen LIANG ; Seah Jing Sheng SHAWN ; Chiu Shi TING ; Lau Leok LIM ; Hey Hwee Weng DENNIS ; Naresh KUMAR ; Joseph THAMBIAH ; Hee-Kit WONG
Asian Spine Journal 2022;16(6):848-856
Methods:
We performed a retrospective review of 199 patients with surgically treated thoracolumbar fractures operated between January 2007 and January 2018. The potential risk factors for the development of AEs as well as the development of common complications were evaluated by univariate analysis, and a multivariate logistic regression analysis was performed to identify independent risk factors predictive of the above.
Results:
The overall rate of AEs was 46.7%; 83 patients (41.7%) had nonsurgical AEs, whereas 24 (12.1%) had surgical adverse events. The most common AEs were urinary tract infections in 43 patients (21.6%), and hospital-acquired pneumonia in 21 patients (10.6%). On multivariate logistic regression, a Thoracolumbar Injury Classification and Severity (TLICS) score of 8–10 (odds ratio [OR], 6.39; 95% confidence interval [CI], 2.33–17.51), the presence of polytrauma (OR, 2.64; 95% CI, 1.17–5.99), and undergoing open surgery (OR, 2.31; 95% CI, 1.09–4.88) were significant risk factors for AEs. The absence of neurological deficit was associated with a lower rate of AEs (OR, 0.47; 95% CI, 0.31–0.70).
Conclusions
This study suggests the presence of polytrauma, preoperative American Spinal Injury Association score, and TLICS score are predictive of AEs in patients with surgically treated thoracolumbar fractures. The results might also suggest a role for minimally invasive surgical methods in reducing AEs in these patients.
10.BNT162B2 COVID-19 mRNA vaccination did not promote substantial anti-syncytin-1 antibody production nor mRNA transfer to breast milk in an exploratory pilot study.
Citra N Z MATTAR ; Winston KOH ; Yiqi SEOW ; Shawn HOON ; Aparna VENKATESH ; Pradip DASHRAATH ; Li Min LIM ; Judith ONG ; Rachel LEE ; Nuryanti JOHANA ; Julie S L YEO ; David CHONG ; Lay Kok TAN ; Jerry K Y CHAN ; Mahesh CHOOLANI ; Paul Anantharajah TAMBYAH
Annals of the Academy of Medicine, Singapore 2022;51(5):309-312