1.Recurrent non-immune fetal hydrops: A case report.
Shen L GOH ; June V K TAN ; Kenneth Y C KWEK ; George S H YEO
Annals of the Academy of Medicine, Singapore 2006;35(10):726-728
INTRODUCTIONRecurrent non-immune fetal hydrops (NIH) has been reported in the literature but is a rare entity, with fewer than 6 reported cases so far. It has been postulated to be related to a recessive gene.
CLINICAL PICTUREWe report a case of recurrent fetal hydrops in a multigravida with no medical history of note. She presented in her current pregnancy with a significant history of having 4 (out of 7) previous pregnancies affected by hydrops.
TREATMENTAll the affected pregnancies resulted in mid-trimester pregnancy termination (MTPT) following diagnosis in the second trimester. Previous investigations for hydrops did not yield any obvious cause.
OUTCOMEHer most recent pregnancy was unaffected. We discuss the possible differential diagnoses and the likelihood of autosomal recessive metabolic diseases being the aetiological factor.
CONCLUSIONRare causes of fetal hydrops need to be excluded in cases of recurrent non-immune hydrops with no obvious aetiology following routine investigations.
Abortion, Legal ; Adult ; Diagnosis, Differential ; Female ; Humans ; Hydrops Fetalis ; diagnosis ; genetics ; immunology ; Pregnancy ; Prenatal Diagnosis ; Recurrence ; Thalassemia
2.Development of influenza control programs in children.
Chinese Journal of Epidemiology 2018;39(8):1060-1065
Based on the characteristics of influenza occurred in 2017 and 2018, we discussed the current development and update on the etiology, mechanism, clinical characteristics, laboratory examination, treatment and prevention for influenza in children, in order to draw attention on the awareness and capacity in prevention and treatment programs targeting child influenza among physicians and health workers.
Awareness
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Child
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Communicable Disease Control
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Health Personnel/psychology*
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Humans
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Influenza Vaccines
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Influenza, Human/prevention & control*
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Physicians/psychology*
3.In vitro evidence for pancreatic lineage: Ngn3 positive cells are endocrine progenitors derived from cultured islets.
Lu-jun SONG ; Xin-yu QIN ; Wei-xin NIU ; Kun-tang SHEN ; Feng-lin LIU ; K A ANDREONI ; D A GERBER ; J H FAIR ; L RICE ; A PLEASANT ; J WANG
Chinese Journal of Surgery 2005;43(1):42-45
OBJECTIVEFurther studies have been conducted to evaluate the roles of Ngn3 in adult islet maintenance and renewal.
METHODSIslets were isolated from 6 - 8 week old male C57BL/6 mice. After common bile duct cannulation, the pancreas was resected and digested in collagenase V (2.5 mg/ml). Islets were then handpicked and 10 - 12 islets were plated in 60 mm culture dish and cultivated with RPMI-1640, which contained 12.5 mmol/L HEPES, 5.2 mmol/L glucose and 2% fetal bovine serum (FBS). Islet cells were analyzed by immunocytochemistry methods for A6, insulin, glucagon, nestin, Ngn3 and 5-bromo-2'-deoxy-uridine (BrdU).
RESULTSThe results of these studies indicated that less than 15 percent of proliferated islet cells were Ngn3 expressing cells, in which about one third of the Ngn3 positive cells co-expressed A6. The existence of Ngn3 in cultured islet cells is consistent with the results from other's findings both in embryogenesis and adult islet studies. A significant finding of our study is that the existence of A6 and Ngn3 co-expressing cells in the cultured islet. A6 is a marker for identifying bile duct epithelial cell oriented hepatic progenitor cells. Islet-derived A6 cells are possibly born in the adult pancreatic duct and migrate into islets. A6 cells co-express Ngn3 when these cells commit to endocrine lineage within the islets. More interestingly, islet-derived A6 positive cells have the potential to transdifferentiate into hepatic cells.
CONCLUSIONThe presence of Ngn3(+) and A6(+) cells in the cultured islets suggests that the four established islet cell types arise from a common endocrine lineage residing within the adult islets. A6 and Ngn3 are useful markers for understanding intra-islet adult stem cell lineages in our future studies. This approach may allow for significant advances in understanding the IPC proliferation and differentiation, and open the possibility of using intra-islet adult stem cells for diabetes treatment.
Animals ; Basic Helix-Loop-Helix Transcription Factors ; Cell Differentiation ; Cell Lineage ; Cells, Cultured ; Islets of Langerhans ; cytology ; Male ; Mice ; Mice, Inbred C57BL ; Microfilament Proteins ; Nerve Tissue Proteins ; biosynthesis ; Protein-Tyrosine Kinases ; biosynthesis ; Stem Cells ; cytology ; metabolism
4.Lack of efficacy of a herbal preparation (RCM-102) for seasonal allergic rhinitis: a double blind, randomised, placebo-controlled trial
George B LENON ; C G LI ; C DA COSTA ; F C K THIEN ; Y SHEN ; C C L XUE
Asia Pacific Allergy 2012;2(3):187-194
BACKGROUND: A herbal preparation, known as RMIT Chinese Medicine 102 (RCM-102) consisting of eight herbs which demonstrates inhibition of the release of key inflammatory mediators associated with seasonal allergic rhinitis (SAR) was used. This study evaluated the efficacy and safety of RCM-102 for SAR. OBJECTIVE: This study evaluated the efficacy and safety of RCM-102 for SAR. METHODS: This randomised placebo-controlled trial involved subjects aged between 18 and 65 who were randomly assigned to either RCM-102 or a placebo group. After a two-week baseline period, all subjects took either RCM-102 or placebo capsules (two capsules each time, three times daily with a four hour interval) for a period of eight weeks. The primary end-points were the Five-Point Scale symptom scores. Rhinoconjunctivitis Quality of Life Questionnaire, relief medication usage, adverse events, kidney and liver function tests and full blood examination were secondary end-points. Intention-to-treat analysis was applied. RESULTS: One hundred and four subjects were randomised with 52 in each group. Ninety-five subjects (47 and 48 subjects in RCM-102 and placebo groups) completed the trial. Nine subjects withdrew from the study prior to the end of the second treatment week. At the end of the trial, there were no significant differences between the two groups with respect to all outcome measures. There were no liver or kidney function abnormalities reported. CONCLUSION: This mechanism-based RCM-102 was safe but not more beneficial than placebo for patients with SAR.
Asian Continental Ancestry Group
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Capsules
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Herbal Medicine
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Humans
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Kidney
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Liver
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Liver Function Tests
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Outcome Assessment (Health Care)
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Plant Preparations
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Quality of Life
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Rhinitis, Allergic, Seasonal
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Seasons
5.Prospective cohort study on the risks of pre-pregnancy overweight, excessive gestational weight gain on macrosomia.
Z P ZHANG ; L M CHU ; S L CHU ; M LU ; L H SHEN ; K CHEN ; L F GU ; H T WU ; J SHEN
Chinese Journal of Epidemiology 2018;39(8):1082-1085
Objective: To investigate the risks of pre-pregnancy overweight, excessive gestational weight gain on macrosomia. Methods: We conducted one hospital-based cohort study, focusing on pregnant women from January 2015. All pregnant women attending to this hospital for maternal check-ups, were included in our cohort and followed to the time of delivery. Data related to general demographic characteristics, pregnancy and health status of those pregnant women, was collected and maternal pre-pregnant BMI and maternal weight gain were calculated. Logistic regression was used to explore the risk difference of pre-pregnancy BMI, excessive gestational weight gain on macrosomia. Results: The overall incidence of macrosomia in our cohort appeared as 6.6% (149/2 243). After adjusting the confounding factors including age and histories on pregnancy, pre-pregnancy overweight/obesity was associated with higher risks of macrosomia (OR=3.12, 95%CI: 1.35-7.22, P=0.008; OR=2.99, 95%CI: 1.17-7.63, P=0.022) when comparing to those with normal pre-pregnancy weight. Cesarean delivery and sex of the offspring were associated with higher risk of macrosomia, while excessive gestational weight gain showed no significant difference (OR=1.41, 95%CI: 0.96-2.09, P=0.084). Our data showed that Macrosomia was statistically associated with gestational weight gain (P=0.002). After controlling parameters as age, history of pregnancy and related complications of the pregnant women, results from the logistic regression showed that women with gestational inadequate weight gain having reduced risks to deliver macrosomia, when compared to those pregnant women with adequate weight gain (OR=0.52, 95%CI: 0.30-0.90, P=0.019). Conclusion: Pre-pregnancy overweight and obesity were on higher risks to macrosomia.
Body Mass Index
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Cesarean Section/statistics & numerical data*
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China/epidemiology*
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Female
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Fetal Macrosomia/epidemiology*
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Humans
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Incidence
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Logistic Models
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Obesity/epidemiology*
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Overweight/epidemiology*
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Pregnancy
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Pregnancy Complications/epidemiology*
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Prospective Studies
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Weight Gain
6.Comprehensive functional annotation of susceptibility variants identifies genetic heterogeneity between lung adenocarcinoma and squamous cell carcinoma.
Na QIN ; Yuancheng LI ; Cheng WANG ; Meng ZHU ; Juncheng DAI ; Tongtong HONG ; Demetrius ALBANES ; Stephen LAM ; Adonina TARDON ; Chu CHEN ; Gary GOODMAN ; Stig E BOJESEN ; Maria Teresa LANDI ; Mattias JOHANSSON ; Angela RISCH ; H-Erich WICHMANN ; Heike BICKEBOLLER ; Gadi RENNERT ; Susanne ARNOLD ; Paul BRENNAN ; John K FIELD ; Sanjay SHETE ; Loic LE MARCHAND ; Olle MELANDER ; Hans BRUNNSTROM ; Geoffrey LIU ; Rayjean J HUNG ; Angeline ANDREW ; Lambertus A KIEMENEY ; Shan ZIENOLDDINY ; Kjell GRANKVIST ; Mikael JOHANSSON ; Neil CAPORASO ; Penella WOLL ; Philip LAZARUS ; Matthew B SCHABATH ; Melinda C ALDRICH ; Victoria L STEVENS ; Guangfu JIN ; David C CHRISTIANI ; Zhibin HU ; Christopher I AMOS ; Hongxia MA ; Hongbing SHEN
Frontiers of Medicine 2021;15(2):275-291
Although genome-wide association studies have identified more than eighty genetic variants associated with non-small cell lung cancer (NSCLC) risk, biological mechanisms of these variants remain largely unknown. By integrating a large-scale genotype data of 15 581 lung adenocarcinoma (AD) cases, 8350 squamous cell carcinoma (SqCC) cases, and 27 355 controls, as well as multiple transcriptome and epigenomic databases, we conducted histology-specific meta-analyses and functional annotations of both reported and novel susceptibility variants. We identified 3064 credible risk variants for NSCLC, which were overrepresented in enhancer-like and promoter-like histone modification peaks as well as DNase I hypersensitive sites. Transcription factor enrichment analysis revealed that USF1 was AD-specific while CREB1 was SqCC-specific. Functional annotation and gene-based analysis implicated 894 target genes, including 274 specifics for AD and 123 for SqCC, which were overrepresented in somatic driver genes (ER = 1.95, P = 0.005). Pathway enrichment analysis and Gene-Set Enrichment Analysis revealed that AD genes were primarily involved in immune-related pathways, while SqCC genes were homologous recombination deficiency related. Our results illustrate the molecular basis of both well-studied and new susceptibility loci of NSCLC, providing not only novel insights into the genetic heterogeneity between AD and SqCC but also a set of plausible gene targets for post-GWAS functional experiments.
Adenocarcinoma of Lung/genetics*
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Carcinoma, Non-Small-Cell Lung/genetics*
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Carcinoma, Squamous Cell/genetics*
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Genetic Heterogeneity
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Genetic Predisposition to Disease
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Genome-Wide Association Study
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Humans
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Lung Neoplasms/genetics*
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Polymorphism, Single Nucleotide