1.Effects of treadmill exercise on metabolism and chronic neuroinflammation in type 1 diabetes mice of different sexes
Yanli XIE ; Siang WEI ; Guodong ZHANG
Chinese Journal of Tissue Engineering Research 2024;28(35):5577-5583
BACKGROUND:Exercise has been widely recognized in the prevention and treatment of diabetes.Aerobic exercise has become an important part of the treatment of type 1 diabetes.However,the effect of treadmill exercise on the metabolism and chronic neuroinflammation of type 1 diabetes in different sexes needs further discussion. OBJECTIVE:To study the effects of treadmill exercise on metabolism and chronic neuroinflammation in type 1 diabetes mice of different sexes. METHODS:Forty C57BL/6 mice were divided into male group and female group,with 20 mice in each group.Then,a diabetes model was established by continuous injection of streptozotocin at 80 mg/kg for 3 days.Ten rats from each group were randomly selected to perform 6-week treadmill exercise as the diabetes+exercise group and another 10 rats from each group were selected as the diabetes group.Serum sex hormones,liver tissue oxidative stress,brain tissue inflammatory factors,and liver pathology were detected,and Morris water maze was performed for the observation of behavioral changes in mice. RESULTS AND CONCLUSION:Compared with the diabetes group,the diabetes+exercise group delayed the rise of blood sugar in type 1 diabetes mice(P<0.05)and showed a significant reduction in serum follicle-stimulating hormone,luteinizing hormone,liver superoxide dismutase,malondialdehyde,brain tumor necrosis factor α,interleukin-6 and interleukin-1β levels(P<0.01),while serum estradiol,progesterone,estrogen,and liver glutathione peroxidase protein levels were significantly increased(P<0.01,P<0.05).Compared with male type 1 diabetes mice,female type 1 diabetes mice had significantly higher estradiol levels and lower luteinizing hormone levels(P<0.05).Compared with the male diabetes+exercise group,the female diabetes+exercise group had lower liver glutathione peroxidase levels(P<0.05).Compared with type 1 diabetes mice,the escape latency of exercise training mice was shorter(P<0.01).In male mice,exercises significantly increased the time and platform crossing times of type 1 diabetes mice in the target quadrant(P<0.01 or P<0.05),while in female mice,exercises significantly increased the time of type 1 diabetes mice in the target quadrant(P<0.05).Correlation analysis results showed that the levels of follicle-stimulating hormone,luteinizing hormone,progesterone,superoxide dismutase,malondialdehyde,tumor necrosis factor α,and interleukin-6 were positively correlated with the level of interleukin-1β(P<0.05 or P<0.01),whereas the levels of estradiol and progesterone were negatively correlated with the levels of superoxide dismutase,malondialdehyde,tumor necrosis factor α,interleukin-6 and interleukin-1β(P<0.05 or P<0.01).Overall,there are sex differences in the effects of treadmill exercise on metabolic indicators and chronic neuroinflammatory regulation in diabetes mice.Sex hormones are an important variable of treadmill exercise in the metabolic,inflammatory and cognitive responses in diabetes mice.
2.TricValve in Severe Tricuspid Regurgitation: A Case Series Illustrating The Role of CT Angiography and Treatment Outcome
Hanumantha Reddy MALREDDY ; Jien Sze HO ; Ningyan WONG ; Ignasius Aditya JAPPAR ; Jun Hua CHONG ; Michelle Mei-Yi CHAN ; Foong Koon CHEAH ; Adrian Shoen Choon Seng LOW ; Lohendran BASKARAN ; Felix Yung Jih KENG ; Terrance Siang Jin CHUA ; Swee Yaw TAN ; See Hooi EWE ; Jack Wei Chieh TAN ; Khung Keong YEO
Cardiovascular Imaging Asia 2024;8(4):69-76
Less invasive transcatheter tricuspid therapies are optimal alternative for surgery in high-risk individuals with severe symptomatic tricuspid regurgitation on medical therapy. Various techniques are available with Transcatheter Edge-to-Edge Repair (TEER) having the greatest experience worldwide. When the coaptation gap becomes too large for TEER, caval valve implantation (CAVI) emerge as a better option. We described a series of 4 patients who underwent CAVI with the TricValve system and periprocedural computed tomography angiography imaging for the purpose of TricValve sizing. There were few procedural complications, with significant improvements in New York Heart Association functional class and right ventricular function post-procedure.
4.Clinical audit of current Helicobacter pylori treatment outcomes in Singapore.
Tiing Leong ANG ; Kim Wei LIM ; Daphne ANG ; Yu Jun WONG ; Malcolm TAN ; Andrew Siang YIH WONG
Singapore medical journal 2022;63(9):503-508
INTRODUCTION:
H. pylori eradication reduces the risk of gastric malignancies and peptic ulcer disease. First-line therapies include 14-day PAC (proton pump inhibitor [PPI], amoxicillin, clarithromycin) and PBMT (PPI, bismuth, metronidazole, tetracycline). Second-line therapies include 14-day PBMT and PAL (PPI, amoxicillin, levofloxacin). This clinical audit examined current treatment outcomes in Singapore.
METHODS:
Clinical data of H. pylori-positive patientswho underwent empirical first- and second-line eradication therapies from 1 January 2017 to 31 December 2018 were reviewed. Treatment success was determined by 13C urea breath test performed at least 4 weeks after treatment and 2 weeks off PPI.
RESULTS:
A total of 963 patients (862 PAC, 36 PMC [PPI, metronidazole, clarithromycin], 18 PBMT, 13 PBAC [PAC with bismuth], 34 others) and 98 patients (62 PMBT, 15 PAL, 21 others) received first-and second-line therapies respectively. A 14-day treatment duration was appropriately prescribed for first- and second-line therapies in 65.2% and 82.7% of patients, respectively. First-line treatment success rates were noted for PAC (seven-day: 76.9%, ten-day: 88.3%, 14-day: 92.0%), PMC (seven-day: 0, ten-day: 75.0%, 14-day: 69.8%), PBMT (ten-day: 100%, 14-day: 87.5%) and PBAC (14-day: 100%). 14-day treatment was superior to seven-day treatment (90.8% vs. 71.4%; P = 0.028). PAC was superior to PMC (P < 0.001) but similar to PBMT (P = 0.518) and PBAC (P = 0.288) in 14-day therapies. 14-day second-line PAL and PBMT had similar efficacy (90.9% vs. 82.4%; P = 0.674).
CONCLUSION
First-line empirical treatment using PAC, PBMT and PBAC for 14 days had similar efficacy. Success rates for second-line PBMT and PAL were similar.
Humans
;
Helicobacter pylori
;
Clarithromycin/therapeutic use*
;
Helicobacter Infections/drug therapy*
;
Metronidazole/therapeutic use*
;
Bismuth/therapeutic use*
;
Singapore
;
Drug Therapy, Combination
;
Amoxicillin/therapeutic use*
;
Proton Pump Inhibitors/therapeutic use*
;
Anti-Bacterial Agents/therapeutic use*
;
Treatment Outcome
;
Clinical Audit
5.Chapter of Gastroenterologists professional guidance for management of patients with liver disease in Singapore during the COVID-19 pandemic.
Jason Pik Eu CHANG ; Yu Jun WONG ; Wei Lyn YANG ; Kieron Boon Leng LIM ; Poh Seng TAN ; Gim Hin HO ; Benjamin Cherng Hann YIP ; James Weiquan LI ; Chern Hao CHONG ; David Eng Hui ONG ; Tju Siang CHUA ; Charles Kien Fong VU ; Kok Ann GWEE ; Tiing Leong ANG ; Chee Kiat TAN
Singapore medical journal 2020;61(12):619-623
In this paper, we aim to provide professional guidance to clinicians who are managing patients with chronic liver disease during the current coronavirus disease 2019 (COVID-19) pandemic in Singapore. We reviewed and summarised the available relevant published data on liver disease in COVID-19 and the advisory statements that were issued by major professional bodies, such as the American Association for the Study of Liver Diseases and European Association for the Study of the Liver, contextualising the recommendations to our local situation.
COVID-19/epidemiology*
;
Carcinoma, Hepatocellular/therapy*
;
Chronic Disease
;
Hepatitis B, Chronic/therapy*
;
Hepatitis C, Chronic/therapy*
;
Humans
;
Liver Cirrhosis/therapy*
;
Liver Diseases/therapy*
;
Liver Neoplasms/therapy*
;
Liver Transplantation
;
Singapore/epidemiology*
6.Obstructive sleep apnoea and Type 2 diabetes mellitus: are they connected?
Yingjuan MOK ; Chee Wei TAN ; Hang Siang WONG ; Choon How HOW ; Kah Leong Alvin TAN ; Pon Poh HSU
Singapore medical journal 2017;58(4):179-183
Obstructive sleep apnoea (OSA), a sleep-related breathing condition, is diagnosed based on a patient's apnoea-hypopnea index from a sleep study, and the presence or absence of symptoms. Diabetes mellitus (DM) and OSA share a significant common risk factor, obesity, with all three conditions contributing to the risk of developing cardiovascular diseases. The pathophysiological links between OSA and DM are still unclear, but intermittent hypoxia may be an important mechanism. More awareness of the possible link between OSA and DM is needed, given their increasing prevalence locally and worldwide. Continuous positive airway pressure is the standard treatment for OSA, while weight loss through dietary and lifestyle modifications is important to holistically manage patients with either condition. There is currently insufficient evidence to support the benefits of screening every diabetic patient for OSA. However, diabetic patients with symptoms suggestive of OSA should be referred to a sleep specialist for further evaluation.
7.Nationwide “Hospital Emergent Capability Accreditation by Level-Stroke” Improves Stroke Treatment in Taiwan.
Tain Junn CHENG ; Giia Sheun PENG ; Wei Siang JHAO ; Jiunn Tay LEE ; Tsung Hsi WANG
Journal of Stroke 2017;19(2):205-212
BACKGROUND AND PURPOSE: Recombinant tissue plasminogen activator (rtPA) is one of the proven therapies that improve the outcome of patients with acute ischemic stroke (AIS). In 2009, the Ministry of Health and Welfare, Executive Yuan, Republic of China, launched the project “Hospital Emergent Capability Accreditation by Level-Stroke (HECAL-Stroke)” to improve AIS treatment in Taiwan. The current study was performed to determine whether the project launched by the government was effective in promoting rtPA therapy among AIS patients. METHODS: All participating hospitals were verified and designated as “heavy duty (HD),”“moderate duty (MoD),” or “medium duty (MeD)” according to the stroke center criteria. Four annual indices (rates of treatment, protocol adherence, in-time treatment, and complications) were recorded from 2009 to 2014 as outcome measures. The data were analyzed using the χ² test for significance. RESULTS: The number of certified hospitals progressively increased from 74 to 112 during the 6-year period and finally consisted of 33 HD, 9 MoD and 70 MeD hospitals in 2014. The annual intravenous rtPA treatment rate increased significantly from 3.0% in 2009 to 4.5% in 2014. The protocol adherence rates were 95.7% in the HD group, 92.4% in the MoD group and 72.8% in the MeD group. The annual in-time treatment rate significantly improved from 26.0% in 2009 to 60.1% in 2014. The overall symptomatic intracranial hemorrhagic rate after rtPA treatment was 8.6%. CONCLUSIONS: Initiation of the HECAL-Stroke project by the government significantly improved rtPA treatment in Taiwan.
Accreditation*
;
Humans
;
Outcome Assessment (Health Care)
;
Stroke*
;
Taiwan*
;
Tissue Plasminogen Activator
8.Para-oesophageal and parahiatal hernias in an Asian acute care tertiary hospital: an underappreciated surgical condition.
Ye Xin KOH ; Lester Wei Lin ONG ; June LEE ; Andrew Siang Yih WONG
Singapore medical journal 2016;57(12):669-675
INTRODUCTIONThe prevalence of hiatal hernias and para-oesophageal hernias (PEHs) is lower in Asian populations than in Western populations. Progressive herniation can result in giant PEHs, which are associated with significant morbidity. This article presents the experience of an Asian acute care tertiary hospital in the management of giant PEH and parahiatal hernia.
METHODSSurgical records dated between January 2003 and January 2013 from the Department of Surgery, Changi General Hospital, Singapore, were retrospectively reviewed.
RESULTSTen patients underwent surgical repair for giant PEH or parahiatal hernia during the study period. Open surgery was performed for four patients with giant PEH who presented emergently, while elective laparoscopic repair was performed for six patients with either giant PEH or parahiatal hernia (which were preoperatively diagnosed as PEH). Anterior 180° partial fundoplication was performed in eight patients, and mesh reinforcement was used in six patients. The electively repaired patients had minimal or no symptoms during presentation. Gastric volvulus was observed in five patients. There were no cases of mortality. The median follow-up duration was 16.3 months. There were no cases of mesh erosion, complaints of dysphagia or recurrence of PEH in all patients.
CONCLUSIONGiant PEH and parahiatal hernia are underdiagnosed in Asia. Most patients with giant PEH or parahiatal hernia are asymptomatic; they often present emergently or are incidentally diagnosed. Although surgical outcomes are favourable even with a delayed diagnosis, there should be greater emphasis on early diagnosis and elective repair of these hernias.
Adult ; Aged ; Digestive System Surgical Procedures ; methods ; Elective Surgical Procedures ; Female ; Hernia, Hiatal ; diagnostic imaging ; surgery ; Humans ; Laparoscopy ; Male ; Middle Aged ; Retrospective Studies ; Singapore ; Surgical Mesh ; Tertiary Care Centers ; Treatment Outcome
9.In vitro growth of Ganoderma boninense isolates on novel palm extract medium and virulence on oil palm (Elaeis guineensis) seedlings
Siang Ming Kok ; Yit Kheng Goh ; Hun Jiat Tung ; Kah Joo Goh ; Wei Chee Wong ; You Keng Goh
Malaysian Journal of Microbiology 2013;9(1):33-42
Aims: Basal stem rot (BSR) disease caused by Ganoderma pathogenic fungi, especially Ganoderma boninense is
thriving rapidly in both areas with coastal and inland soils. The objectives of this study were to isolate and characterize Ganoderma isolates collected from various locations in Peninsular Malaysia through the comparison of their growth rate in vitroly on conventional and novel palm extract media, and to determine the degree of virulence caused by the isolates in oil palm seedlings.
Methodology and results: In this study, 12 Ganoderma isolates were collected from infected oil palm trees, from
various locations – Johor, Negeri Sembilan, Kedah, Perak, Pahang, and Kelantan, in Malaysia in year 2011. Twelve
Ganoderma isolates were identified using molecular method with primer set that targeted at small-subunit 18S rDNA
fragment, and characterized by determining the in vitro growth rate, and degree of virulence in 2-month-old oil palm seedlings in the nursery using both disease incidence (DI) and disease severity index (DSI) as the measurements to quantify the infection. All the Ganoderma isolates were identified as G. boninense and sequences of the respective
isolates were deposited in GenBank. In general, all the isolates proliferated faster on oil palm extract medium (OPEM) compared to malt extract agar (MEA). Twelve G. boninense isolates were observed to illustrate different degree of virulence ranging from highly pathogenic to least pathogenic.
Conclusion, significance and impact of study: Cultures of 12 G. boninense isolates were observed to show faster
growth rate (P < 0.014) on OPEM under in vitro conditions compared to conventional MEA medium, except Bt Lintang
G10 and GBA G12 isolates. OPEM medium could provide a better alternative for maintaining and culturing Ganoderma
strains. In the current study, both DI and DSI were highly correlated. However, there were low linear relationships (R2 < 0.423) between mycelia growth rate (on MEA and OPEM) and degree of virulence (DI and DSI) at 12-, 14- and 16-
weeks after treatments among the G. boninense isolates tested. Furthermore, different degrees of virulence in twelve separate Ganoderma isolates were reported. Therefore, it is crucial to incorporate more than one isolate into any researches on screening for Ganoderma resistance or tolerance planting materials, searching for potential biological control agents, and studying bitrophic or tri-trophic interactions. In addition, this study was aimed to isolate G. boninense
strains with various virulence levels for future studies.
10.Epidemiological characteristics of the 2005 and 2007 dengue epidemics in Singapore – similarities and distinctions
Teck Siang Ler ; Li Wei Ang ; Grace Siew Lian Yap ; Lee Ching Ng ; Ji Choong Tai ; Lyn James ; Kee Tai Goh
Western Pacific Surveillance and Response 2011;2(2):24-29
INTRODUCTION: We investigated the epidemiological features of the 2007 dengue outbreak to determine the factors that could have triggered it two years after the previous large outbreak in 2005.
METHODS: All laboratory-confirmed cases of dengue reported during the year, as well as entomological and virological data, were analysed.
RESULTS: A total of 8826 cases including 24 deaths were reported in 2007, giving an incidence of 192.3 cases per 100 000 residents and a case-fatality rate of 0.27%. The median age of the cases was 37 years (interquartile range 25 to 50), with an age range from two days to 101 years, which was higher than the median age of 31 years (interquartile range 20 to 42), with a range from four days to 98 years, in 2005. The overall Aedes premises index in 2007 was 0.68%, lower than the 1.15% observed in 2005. The predominant dengue serotype in 2007 was dengue virus DENV-2 which re-emerged with a clade replacement in early 2007, and overtook the predominant serotype (DENV-1) of 2005. Seroprevalence studies conducted in the three largest outbreak clusters revealed that 73.2% of residents with recent infection were asymptomatic.
DISCUSSION: With the exception of an increase in the median age of the cases, and a change in the predominant dengue serotype, the epidemiological features of the 2007 epidemic were largely similar to those of 2005. Singapore remains vulnerable to major outbreaks of dengue, despite sustained vector control measures to maintain a consistently low Aedes premises index.


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