52 results on '"Liu, Cai‐Xia"'
Search Results
2. Value of T6SS Core Gene hcp in Acinetobacter baumannii Respiratory Tract Infection.
- Author
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Hu, Yin-yin, Chen, Shuo, Zhang, Ya-dong, Lu, Qing-wen, Wang, Fei, Ren, Aijuan, and Liu, Cai-xia
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RESPIRATORY infections ,ACINETOBACTER baumannii ,NF-kappa B ,DRUG resistance in bacteria ,HEMOLYSIS & hemolysins - Abstract
Hospital-acquired pneumonia caused by Acinetobacter baumannii is a major healthcare burden. Type VI Secretion System (T6SS) contributes to both virulence and drug resistance in this bacteria. This study aims to investigate the diagnostic value of hemolysin co-regulated protein (Hcp) gene in A. baumannii pneumonia and further explore the effect of hcp on clinical, pathogenicity and drug resistance. 53 clinical A. baumannii strains from patients' respiratory tract at a teaching hospital were included in this study. Real-time quantitative polymerase chain reaction (qRT-PCR) was carried out to examine the expression of hcp. Recombinant Hcp expression plasmids (pET-28a(+)-hcp) were constructed and his-tagged Hcp were purified to stimulate Tohoku Hospital Pediatrics-1 (THP-1) macrophages. Nuclear Factor Kappa B p65 (NF-κBp65) and Interleukin 8 (IL-8) were detected by qRT-PCR. Antimicrobial susceptibility testing (AST) were examined by an automated instrument system. Hcp gene had 92.6% sensitivity and 75% specificity for distinguishing invasive or colonizing A. baumannii from the respiratory tract. His-tagged Hcp induced NF-κBp65 and IL-8 at gene level in THP-1 macrophages. Additional, high hcp expression isolates showed higher rate of antimicrobial agent exposure (< 30 days) of carbapenems, antibiotic combination therapy and multiple or extensive drug-resistant (MDR/XDR) and exhibited higher resistance rate to clinical commonly-used antimicrobial agents. Hcp gene could serve as a novel diagnostic biomarker to distinguish A. baumannii respiratory tract infection from colonization and participate in eliciting inflammatory responses in vitro. T6SS/hcp may play a role in the development of carbapenem-resistant A. baumannii (CRAB), multiple or extensive drug-resistant A. baumannii (MDRAB/XDRAB). [ABSTRACT FROM AUTHOR]
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- 2023
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3. miR-483-5p regulates osteoclast generation by targeting Timp2.
- Author
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NIU Tian-qi, LIU Cai-xia, XIONG Jun, JIA Hao, WANG Hua, LI Shuang, DENG Hui-ming, and ZENG Xiang-zhou
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GENE expression ,REPORTER genes ,GENE targeting ,BIOINFORMATICS software ,WESTERN immunoblotting - Abstract
Objective: To investigate whether miR-483-5p regulates osteoclast generation by targeting Timp2. miR-483-5p can promote osteoclast differentiation and bone destruction. Methods: Target genes of miR-483-5p were predicted by miRNAs target gene prediction software TargetScan8.0, and wild type and mutant 3' UTR plasmids were constructed. Dual luciferase reporter genes were used to verify whether target genes had a targeted regulatory relationship with miR-483-5p. Western blotting was used to detect the corresponding changes in the expression level of target protein after adjusting the level of miR-483-5p in cells. Cells were transfected or infected with target gene siRNA or target protein lentivirus, and TRAP staining and q-PCR assays were performed. In addition, for osteoclast induction experiment, RAW264.7 cells were co-transfected with ago-miR-483-5p and target protein-overexpressed lentiviruses q-PCR and TRAP staining were performed respectively. Results: Bioinformatics software was used to predict the target gene of miR-483-5p, and the Timp2 gene was found to regulate osteoclasts, and the dual luciferase reporter detection system found that miR-483- 5p could be associated with the 3-UTR of the predicted target gene Timp2 gene. There are complementary loci and targeted regulatory relationship between them. Subsequently, we upregulated miR-483-5p in RAW264.7 cells to reduce the expression of Timp2. Compared with the normal group, the number of osteoclasts and the expression of osteoclast-specific genes increased significantly after the induction of Timp2 in knockdown cells. After co-transfection of target gene and miR-483-5p into cells, the number of osteoclasts and the expression of specific genes decreased significantly compared with the normal group. Conclusion: Timp2 is a downstream target gene of miR-483-5p and is involved in and inhibits osteoclast generation. [ABSTRACT FROM AUTHOR]
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- 2023
4. Effects of borneol combined with astragaloside IV and Panax notoginseng saponins regulation of microglia polarization to promote neurogenesis after cerebral ischaemia.
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Ding, Huang, Huang, Xiao-Ping, Liu, Xiao-Dan, Li, Yan-Ling, Tang, San, Xiong, Hai-Long, Huang, Mei-Ting, Li, Ying, Liu, Cai-Xia, Zhang, Wei, and Deng, Chang-Qing
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SAPONINS ,DEVELOPMENTAL neurobiology ,MICROGLIA ,NEURAL stem cells ,NEUROGENESIS ,PANAX ,NEURONS - Abstract
Objective: To study the effect of borneol combined with astragaloside IV and Panax notoginseng saponins (BAP) on promoting neurogenesis by regulating microglia polarization after cerebral ischaemia–reperfusion(CI/R) in rats. Methods: A focal CI/R injury model was established. Evaluated the effects of BAP on ischaemic brain injury, on promoting neurogenesis, on inhibiting Inflammatory microenvironment and TLR4/MyD88/NFκB signalling pathway. A microglia oxygen-glucose deprivation reoxygenation (OGD/R) model was established that evaluated the effects of BAP on regulating the polarization of microglia and inflammatory microenvironment. Results: BAP can inhibit the expression of TLR4, MyD88 and NFκB proteins, reduce IL-1β and increase IL-10, reduce M1 type microglia and increase M2 microglia. The proliferation of neural stem cells increased, synaptic gap decreased, synaptic interface curvature increased, expression of SYN and PSD95 proteins increased, which improved the neurological dysfunction and reduced the volume of cerebellar infarction and nerve cell injury. Conclusion: BAP can reduce CI/R injury and promote neurogenesis, the effect is related to inhibition of the activation of TLR4/MyD88/NFκB, regulating the polarization of microglia from M1 type to M2 type and inhibition of inflammatory response. [ABSTRACT FROM AUTHOR]
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- 2023
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5. Caspofungin at sub‐inhibitory concentration promotes the formation of Candida albicans persister cells.
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Ye, Meng‐Si, Chen, Hua‐Le, Liu, Cai‐Xia, Ren, Ai‐Juan, Yang, Hai‐Wei, and Wang, Shi‐Shi
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CASPOFUNGIN ,CANDIDA albicans ,INVASIVE candidiasis ,ENERGY metabolism ,GENE expression ,CANDIDIASIS - Abstract
Aims: Low caspofungin exposure is frequently encountered in patients with invasive candidiasis caused by Candida albicans. This study aimed to investigate the effects of caspofungin on C. albicans at sub‐inhibitory concentrations. Methods and Results: First, a comparative transcriptomics analysis was performed on C. albicans receiving caspofungin at sub‐minimum inhibitory concentrations (sub‐MICs). The results showed that caspofungin significantly changed the mRNA expression profile in DAY185, with DE‐mRNAs enriched in the functions of cell wall biosynthesis, metabolism, etc. Subsequently, cellular fitness, cell aggregation, energy metabolism activity and the proportion of persister cells of C. albicans were quantitatively and/or qualitatively assessed after sub‐MIC caspofungin exposure. No significant changes in cell fitness and aggregation formation were observed during treatment of C. albicans with sub‐MIC caspofungin. In C. albicans aggregation treated with sub‐MIC caspofungin, we observed a decrease in respiratory metabolism and an increase in persister cells; this effect was more pronounced in als1ΔΔ than in DAY185. Conclusions: Pre‐exposure to sub‐MIC caspofungin suppresses C. albicans respiratory metabolism and promotes persister cell development. Significance and Impact of the Study: Caspofungin should be used with caution in patients with C. albicans infections, as anti‐infection therapy may fail due to persister cells. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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6. Metarhizium anisopliae is a valuable grist for biocontrol in beta‐cypermethrin‐resistant Blattella germanica (L.).
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Zhang, Xian Cui, Jiang, Meng, Zang, Ya Nan, Zhao, Hai Zheng, Liu, Cai Xia, Liu, Bao Rui, Xue, Hua, Schal, Coby, Lu, Xing Meng, Zhao, Dong Qin, Zhang, Xue Xia, and Zhang, Fan
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METARHIZIUM anisopliae ,BLATTELLA germanica ,INSECT pests ,PATHOGENIC fungi ,INSECTICIDE resistance ,INSECTICIDES - Abstract
BACKGROUND: The widespread use of chemical insecticides has resulted in the development of resistance in German cockroaches worldwide, and biopesticides based on entomopathogenic fungi as active ingredients have become a promising alternative strategy. Resistance can change many of the physiological and biochemical characteristics of insect pests, such as cuticle thickness, detoxification enzyme activity, and even intestinal flora composition. Thus, potential interactions between pathogenic fungi and insecticide resistance may lead to unpredictable changes in pest susceptibility to fungi. RESULTS: Beta‐cypermethrin‐resistant German cockroaches were more susceptible to infection with the fungus Metarhizium anisopliae regardless of age and sex. Histopathological results showed that the infection of resistant strains (R) by M. anisopliae was visibly faster than that of susceptible strains (S). The gut microbiota of the S strain indicated a stronger ability to inhibit fungi in vitro. The abundance of Parabacteroides, Lachnoclostridium, and Tyzzerella_3 decreased significantly in the R strain, and most demonstrated the ability to regulate glucose and lipid metabolism, and antifungal infections. The expression levels of Akirin, BgTPS, and BgPo genes in the R strain were significantly lower than those in the S strain, while BgChi and CYP4G19 gene expression were significantly higher. The mortality of cockroaches infected with M. anisopliae decreased to varying degrees after RNA interference, reflecting the role of these genes in antifungal infection. CONCLUSIONS: Results confirmed that insecticide resistance may enhance cockroach susceptibility to fungi by altering intestinal flora and gene expression. Fungal biopesticides have high utilization value in pest control and insecticide resistance management strategies. © 2021 Society of Chemical Industry. [ABSTRACT FROM AUTHOR]
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- 2022
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7. Airway epithelial integrin β4‐deficiency exacerbates lipopolysaccharide‐induced acute lung injury.
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Jiang, Wang, Wang, Jin‐Mei, Luo, Jin‐Hua, Chen, Yu, Pi, Jiao, Ma, Xiao‐Di, Liu, Cai‐Xia, Zhou, Yang, Qu, Xiang‐Ping, Liu, Chi, Liu, Hui‐Jun, Qin, Xiao‐Qun, and Xiang, Yang
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TUMOR necrosis factors ,LUNG injuries ,EPITHELIAL cells ,NATURAL immunity ,NEUTROPHILS ,INTEGRINS - Abstract
Airway epithelial cells, the first barrier of the respiratory tract, play an indispensable role in innate immunity. Integrin β4 (ITGB4) is a structural adhesion molecule that is involved in the pathological progression of acute inflammatory diseases and is downregulated in asthmatic patients. Research has shown that endothelial ITGB4 has proinflammatory properties in acute lung injury (ALI). However, the role of epithelial ITGB4 in a murine ALI model is still unknown. This study investigated the role of ITGB4 in lipopolysaccharide (LPS)‐induced ALI. We found that ITGB4 in the airway epithelium had remarkably increased after the introduction of LPS in vivo and in vitro. Then, we constructed airway epithelial cell‐specific ITGB4 knockout (ITGB4−/−) mice to study its role in ALI. At a time point of 12 h after the tracheal injection of LPS, ITGB4−/− mice showed increased macrophages (mainly M1‐type macrophages) and neutrophil infiltration into the lungs; inflammation‐related proteins including interleukin (IL)‐6, tumor necrosis factor, and IL‐17A were significantly elevated compared to their levels in ITGB4+/+ mice. Furthermore, we investigated the role of ITGB4 in the anti‐inflammatory response. Intriguingly, in the ITGB4−/− + LPS group, we found significantly reduced expression of anti‐inflammatory factors, including IL‐10 messenger RNA (mRNA) and ARG‐1 mRNA. We also observed that monocyte chemotactic protein (MCP‐1) increased significantly both in vivo and in vitro. Airway epithelium activates macrophages, most likely driven by MCP‐1, which we confirmed in the coculture of epithelia and macrophages. These phenomena indicate that ITGB4 in airway epithelial cells plays an important role in the process of inflammation and activation of macrophages in ALI. Overall, these data demonstrated a novel link between airway epithelial ITGB4 and the inflammatory response in LPS‐induced ALI. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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8. Main Active Components and Cell Cycle Regulation Mechanism of Astragali Radix and Angelicae Sinensis Radix in the Treatment of Ox-LDL-Induced HUVECs Injury and Inhibition of Their Cell Cycle.
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Liu, Cai-Xia, Tan, Ying-Zi, and Deng, Chang-Qing
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ENDOTHELIAL cells ,FLOW cytometry ,UMBILICAL veins ,DONG quai ,PLANT anatomy ,CYTOMETRY ,LOW density lipoproteins ,CELL receptors ,CELL cycle ,OXIDATIVE stress ,CELL survival ,GENE expression ,LACTATE dehydrogenase ,FLUORESCENT antibody technique ,CELL proliferation ,MESSENGER RNA ,ASTRAGALUS (Plants) ,PLANT extracts ,VASCULAR diseases ,REACTIVE oxygen species ,BIOLOGICAL assay ,POLYMERASE chain reaction ,OXIDATION-reduction reaction ,CHEMICAL inhibitors - Abstract
To explore the main active components and effects of cell cycle regulation mechanism of Astragali radix (AR) and Angelicae sinensis radix (ASR) on oxidative damage in vascular endothelial cells, a model of oxidative damage in human umbilical vein endothelial cells (HUVECs) induced by oxidized low-density lipoprotein (ox-LDL) treatment was developed. Based on the "knock-out/knock-in" model of the target component, cell viability, intracellular reactive oxygen species (ROS), and lactate dehydrogenase (LDH) leakage were assessed by Cell Counting Kit-8 assay, fluorescent probe 2,7-dichlorodihydrofluorescein diacetate (DCFH-DA), and colorimetric assay, respectively, to evaluate the protective effect of the active components of AR and ASR (astragaloside IV (AS IV), astragaloside I (AS I), formononetin (FRM), calycosin (CAL), calycosin-7-O-β-D glucoside (CLG), and ferulic acid (FRA)) against oxidative damage. The cell cycle and expression of genes encoding cyclins and cyclin-dependent kinases (CDKs) were observed using flow cytometry and quantitative real-time polymerase chain reaction. The results showed that the combination of active components (ACC) significantly inhibited the decrease in cell viability as well as the increase in ROS and LDH release in HUVECs induced by ox-LDL treatment. AS IV and FRM promoted the proliferation of HUVECs but the proliferation index was decreased in the AS I and FRA groups; this inhibitory effect was counteracted by the ACC. The ACC reduced and increased the proportion of positive cells in G1 and S phases, respectively, followed by the upregulation of cyclin A (CCNA), cyclin E (CCNE), and CDK2 mRNA expression and downregulation of cyclin B (CCNB), cyclin D1 (CCND1), CDK1, CDK4, and CDK6 mRNA expression, which significantly mitigated inhibition of HUVECs proliferation induced by ox-LDL treatment. Taken together, AS IV, AS I, FRM, CAL, CLG, and FRA were the primary pharmacodynamic substances of AR and ASR that alleviated oxidative injury in HUVECs. ACC mitigated the upregulation of intracellular ROS levels and LDH release induced by ox-LDL treatment, which promoted the cell cycle procession of HUVECs by regulating the expression of genes encoding cyclins and CDKs and thus preventing oxidative damage in HUVECs. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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9. Research on Positioning Accuracy of Four Quadrant Detector in Inter-satellite Laser Communication.
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LI Shu-de, LIU Cai-xia, XU lin, AN Jian-xin, and LIU Zheng
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In inter-satellite laser communication, four-quadrant detector is often used in precise tracking unit for spot location. The positioning error directly affects the angular measurement accuracy of fine tracking unit. In order to achieve the tracking precision of micro-radian magnitude, this paper studies various noise factors that affect the positioning accuracy of the detector, simplifying the analysis according to the practice of inter-satellite laser communication, and putting forward the specific calculation method of positioning error. Finally, we evaluate the influence degree of each factor through a specific example. The results show that the signal-to-noise ratio of the received signal increases with the increasing of emitting power in a certain range with reduced positioning error. However, positioning error does not decrease linearly with the increase of transmitting power. When the transmitting power increases to a certain extent, the reduction of tracking error is limited. At this time, it will be very expensive to improve the tracking precision simply by increasing the transmitting power. [ABSTRACT FROM AUTHOR]
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- 2021
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10. Case Report: Compound Heterozygous Phosphatidylinositol-Glycan Biosynthesis Class N (PIGN) Mutations in a Chinese Fetus With Hypotonia-Seizures Syndrome 1.
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Xiao, Shi-qi, Li, Mei-hui, Meng, Yi-lin, Li, Chuang, Huang, Hai-long, Liu, Cai-xia, Lyu, Yuan, and Na, Quan
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BIOSYNTHESIS ,GENETIC counseling ,FETUS ,CENTRAL nervous system ,GENETIC testing - Abstract
Multiple congenital anomalies-hypotonia-seizures syndrome 1 (MCAHS1) caused by phosphatidylinositol-glycan biosynthesis class N (PIGN) mutations is an autosomal recessive disease involving many systems of the body, such as the urogenital, cardiovascular, gastrointestinal, and central nervous systems. Here, compound heterozygous variants NM_012327.6:c.2427-2A > G and c.963G > A in PIGN were identified in a Chinese proband with MCAHS1. The features of the MCAHS1 family proband were evaluated to understand the mechanism of the PIGN mutation leading to the occurrence of MCAHS1. Ultrasound was conducted to examine the fetus, and his clinical manifestations were evaluated. Genetic testing was performed by whole-exome sequencing and the results were verified by Sanger sequencing of the proband and his parents. Reverse transcription-polymerase chain reaction was performed, and the products were subjected to Sanger sequencing. Quantitative PCR (Q-PCR) was conducted to compare gene expression between the patient and wild-type subjects. The compound heterozygous mutation NM_012327.6:c.2427-2A > G and c.963G > A was identified by whole-exome sequencing and was confirmed by Sanger sequencing. The NM_012327.6:c.2427-2A > G mutation led to skipping of exon 26, which resulted in a low expression level of the gene, as measured by Q-PCR. These findings provided a basis for genetic counseling and reproduction guidance in this family. Phenotype-genotype correlations may be defined by an expanded array of mutations. [ABSTRACT FROM AUTHOR]
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- 2020
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11. Case Report: Novel Heterozygous DFNA5 Splicing Variant Responsible for Autosomal Dominant Non-syndromic Hearing Loss in a Chinese Family.
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Chen, Xi, Jia, Bao-Long, Li, Mei-Hui, Lyu, Yuan, and Liu, Cai-Xia
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HEARING disorders ,NUCLEOTIDE sequence ,CELL-free DNA ,ANTISENSE DNA - Abstract
Autosomal dominant non-syndromic hearing loss (ADNSHL) has a broad phenotypic spectrum which includes bilateral, symmetrical, and high-frequency sensorineural hearing loss, that eventually progresses into hearing loss at all frequencies. Several genetic variations have been identified as causal factors underlying deafness, autosomal dominant 5 (DFNA5) gene-related hearing loss. Here, we report a novel mutation (c.991-1G > C) in DFNA5 , which co-segregated with late-onset ADNSHL in a Chinese family and was identified via exome sequencing and Sanger sequencing of DNA from peripheral blood of the family members. Further sequencing of cDNA derived from peripheral blood mRNA revealed that the c.991-1G >C mutation led to the skipping of exon 8, which is a known pathogenic mechanism for DFNA5-related hearing loss. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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12. Correlation Analysis of C‐terminal telopeptide of collagen type II and Interleukin‐1β for Early Diagnosis of Knee Osteoarthritis.
- Author
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Liu, Cai‐xia, Gao, Ge, Qin, Xiao‐qun, Deng, Chang‐qing, and Shen, Xiong‐jie
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STATISTICAL correlation ,OSTEOARTHRITIS ,EARLY diagnosis ,COLLAGEN ,INTERLEUKIN-1 receptor antagonist protein ,BODY mass index ,INTRA-articular injections - Abstract
Objective: To analyze the correlation between the Kellgren–Lawrence (K‐L) score of knee osteoarthritis (KOA) patients with different degrees and their urine concentration of C‐terminal telopeptide of collagen type II (CTX‐II) and interleukin‐1β (IL‐1β), and to further evaluate the diagnostic value of CTX‐II and IL‐1β during the pathological process by producing an experimental osteoarthritis (OA) model in rabbits. Methods: From 1 January 2017 to 31 December 2018, a total of 34 subjects (7 mild, 9 moderate, 9 severe arthritis patients, and 9 healthy individuals) comprising 16 men and 18 women were included in this study. Patients were diagnosed according to the American College of Rheumatology (ACR) criteria. The urine of all subjects was collected to detect the concentration of CTX‐II and IL‐1β. The rabbits in the KOA group were subjected to protease (control group with saline) injection into the articular cavity of their right knees and immobilization with gypsum. We used radiological and histological examination to identify the KOA model. ELISA was applied to investigate the concentrations of CTX‐II and IL‐1β in urine and serum, and Spearman's rank correlation analysis was used to analyze the correlation. Results: There was no significant difference in the mean ages and body mass index (BMI) between groups. The mean ages of mild, moderate, and severe arthritis patients and healthy individuals were 54.29 ± 5.76, 58.44 ± 6.44, 59.89 ± 6.75, and 56.67 ± 4.18 years, respectively. The mean BMI of mild, moderate, and severe arthritis patients and healthy individuals were 23.59 ± 1.56, 23.57 ± 2.06, 24.46 ± 1.64, and 23.42 ± 1.35 kg/m2, respectively. The Kellgren–Lawrence (K‐L) score was higher with the aggravation of KOA. The K‐L scores of mild, moderate, and severe KOA patients were 1.14 ± 0.38, 2.56 ± 0.53, and 3.63 ± 0.52, respectively. The KOA symptoms of patients became more severe, with not only increased K‐L scores but also elevated concentrations of CTX‐II and IL‐1β. Moreover, there was a positive correlation between CTX‐II and IL‐1β of all subjects (r = 0.974, P < 0.001), between K‐L score and urine concentration of CTX‐II (r = 0.900, P < 0.001), and between K‐L score and IL‐1β (r = 0.813, P < 0.001) of all subjects. Both were significantly increased in KOA group rabbits at all time points after surgery. The serum concentration of CTX‐II and IL‐1β was elevated as early as in the 2nd week (3.69 and 4.25 times) and reached a peak (5.41 and 7.23 times) in the 4th week after surgery. Then, until 12 weeks after surgery, the CTX‐II and IL‐1β concentrations in the KOA group were slightly reduced and remained around 4.5 and 6.3 times that in the control group. Moreover, there was a positive correlation between the serum concentration of IL‐1β and CTX‐II (r = 0.967, P < 0.001). Conclusion: CTX‐II and IL‐1β, which were significantly increased during the process of KOA, can be used as biomolecular markers to provide guidelines for early diagnosis and treatment of KOA. [ABSTRACT FROM AUTHOR]
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- 2020
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13. Rare De Novo IGF2 Variant on the Paternal Allele in a Patient With Silver–Russell Syndrome.
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Xia, Chun-Ling, Lyu, Yuan, Li, Chuang, Li, Huan, Zhang, Zhi-Tao, Yin, Shao-Wei, Mao, Yan, Li, Wen, Kong, Ling-Yin, Liang, Bo, Jiang, Hong-Kun, Li-Ling, Jesse, Liu, Cai-Xia, and Wei, Jun
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ALLELES ,LOW birth weight ,SHORT stature ,DWARFISM ,P16 gene ,FETAL development - Abstract
Silver–Russell syndrome (SRS) is a rare, well-recognized disorder characterized by growth restriction, including intrauterine and postnatal growth. Most SRS cases are caused by hypomethylation of the paternal imprinting center 1 (IC1) in chromosome 11p15.5 and maternal uniparental disomy in chromosome 7 (UPD7). Here, we report on a Chinese family with a 4 year old male proband presenting with low birth weight, growth retardation, short stature, a narrow chin, delayed bone age, and speech delays, as a result of a rare molecular etiology. Whole-exome sequencing was conducted, and a novel de novo IGF2 splicing variant, NM_000612.4: c.157+5G > A, was identified on the paternal allele. In vitro functional analysis by RT-PCR and Sanger sequencing revealed that the variant leads to an aberrant RNA transcript lacking exon 2. Our results further confirm the IGF2 variant mediates SRS and expand the pathogenic variant and phenotypic spectrum of IGF2 -mediated SRS. The results indicate that, beyond DNA methylation and UPD7 and CDKN1C variant tests, IGF2 gene screening should also be considered for SRS molecular diagnoses. [ABSTRACT FROM AUTHOR]
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- 2019
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14. Upregulated EFNB2 and EPHB4 promotes lung development in a nitrofen-induced congenital diaphragmatic hernia rat model.
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Liu, Hao, Li, Xue, Yu, Wen Qian, and Liu, Cai Xia
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- 2018
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15. Hydrogen Sulfide Protects against Chemical Hypoxia-Induced Injury via Attenuation of ROS-Mediated Ca2+ Overload and Mitochondrial Dysfunction in Human Bronchial Epithelial Cells.
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Liu, Cai-Xia, Tan, Yu-Rong, Xiang, Yang, Liu, Chi, Liu, Xiao-Ai, and Qin, Xiao-Qun
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REACTIVE oxygen species ,HYPOXEMIA ,APOPTOSIS ,BIOLOGICAL transport ,BRONCHI ,CALCIUM ,CELL culture ,DOSE-response relationship in biochemistry ,EPITHELIAL cells ,HYDROGEN sulfide ,MITOCHONDRIA ,CYTOMETRY ,OXIDATIVE stress ,CELL survival ,FLUORESCENT dyes ,DISEASE complications - Abstract
Oxidative stress induced by hypoxia/ischemia resulted in the excessive reactive oxygen species (ROS) and the relative inadequate antioxidants. As the initial barrier to environmental pollutants and allergic stimuli, airway epithelial cell is vulnerable to oxidative stress. In recent years, the antioxidant effect of hydrogen sulfide (H
2 S) has attracted much attention. Therefore, in this study, we explored the impact of H2 S on CoCl2 -induced cell injury in 16HBE14o- cells. The effect of CoCl2 on the cell viability was detected by Cell Counting Kit (CCK-8) and the level of ROS in 16HBE14o- cells in response to varying doses (100–1000 μmol/L) of CoCl2 (a common chemical mimic of hypoxia) was measured by using fluorescent probe DCFH-DA. It was shown that, in 16HBE14o- cells, CoCl2 acutely increased the ROS content in a dose-dependent manner, and the increased ROS was inhibited by the NaHS (as a donor of H2 S). Moreover, the calcium ion fluorescence probe Fura-2/AM and fluorescence dye Rh123 were used to investigate the intracellular calcium concentration ([Ca2+ ]i) and mitochondria membrane potential (MMP) in 16HBE14o- cells, respectively. In addition, we examined apoptosis of 16HBE14o- cells with Hoechst 33342. The results showed that the CoCl2 effectively elevated the Ca2+ influx, declined the MMP, and aggravated apoptosis, which were abrogated by NaHS. These results demonstrate that H2 S could attenuate CoCl2 -induced hypoxia injury via reducing ROS to perform an agonistic role for the Ca2+ influx and MMP dissipation. [ABSTRACT FROM AUTHOR]- Published
- 2018
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16. Prenatal Selective Serotonin Reuptake Inhibitor Use and Associated Risk for Gestational Hypertension and Preeclampsia: A Meta-Analysis of Cohort Studies.
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Guan, Hong-Bo, Wei, Yang, Wang, Lei-Lei, Qiao, Chong, and Liu, Cai-Xia
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HYPERTENSION in pregnancy ,RISK factors of preeclampsia ,CONFIDENCE intervals ,MEDICAL information storage & retrieval systems ,LONGITUDINAL method ,MEDLINE ,META-analysis ,ONLINE information services ,PRENATAL care ,SEROTONIN uptake inhibitors ,STATISTICS ,SYSTEMATIC reviews ,DATA analysis ,RELATIVE medical risk ,TREATMENT duration ,PREGNANCY ,DISEASE risk factors - Abstract
To analyze existing cohort studies and provide evidence for the use of prenatal selective serotonin reuptake inhibitor (SSRI) monotherapy and the associated risk of gestational hypertension and preeclampsia.Background: A comprehensive search of English language articles published before 30th April 2017 was conducted on PubMed, EMBASE, and the Web of Science databases. Using data acquired, we summarized the relative risks (RRs) and 95% confidence intervals (CIs) of gestational hypertension and preeclampsia using the random-effects model. Heterogeneity between studies was also assessed with theMethods: I 2 statistic. Seven cohort studies with 1,108,261 individuals were included for analysis. Compared with nonusers, those undertaking prenatal SSRI monotherapy were more likely to develop gestational hypertension or preeclampsia (summarized RR = 1.21, 95% CI: 1.05–1.40,Results: I 2 = 71.3%), gestational hypertension (summarized RR = 1.14, 95% CI: 1.00–1.30,I 2 = 5.7%), and preeclampsia (summarized RR = 1.32, 95% CI: 0.99–1.78,I 2 = 83.3%). In addition, although subgroup analyses, which were stratified by study design, number of cases, geographic location, duration of SSRI monotherapy, registry databases, and adjustment for potential confounders and risk factors, were consistent with the main findings, not all of these showed statistical significance. No evidence of publication bias was detected. Women who receive SSRI monotherapy during pregnancy are at increased risk of gestational hypertension and preeclampsia. [ABSTRACT FROM AUTHOR]Conclusions: - Published
- 2018
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17. Fluoxetine and congenital malformations: a systematic review and meta-analysis of cohort studies.
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Gao, Shan‐Yan, Wu, Qi‐Jun, Zhang, Tie‐Ning, Shen, Zi‐Qi, Liu, Cai‐Xia, Xu, Xin, Ji, Chao, and Zhao, Yu‐Hong
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FLUOXETINE ,PREGNANCY ,CONFIDENCE intervals ,ANTIDEPRESSANTS ,PROPYLAMINE - Abstract
Aims To investigate the safety of fluoxetine use during pregnancy, and to better understand the relationship between maternal fluoxetine use during the first trimester and congenital malformations in infants. Methods PubMed and Web of Science databases were systematically searched from inception to 21 March 2016. Additional studies were identified in a manual search of the reference lists. Two reviewers independently extracted data. A third reviewer checked the data. Estimates were pooled using a random-effects model to calculate the summarized relative ratios (RR) and 95% confidence intervals (CI). Results Among 1918 initially identified articles, 16 cohort studies were included. The offspring of pregnant women exposed to fluoxetine during the first trimester had a statistically increased risk of major malformations (RR = 1.18, 95% CI = 1.08-1.29), cardiovascular malformations (RR = 1.36, 95% CI = 1.17-1.59), septal defects (RR = 1.38, 95% CI = 1.19-1.61), and non-septal defects (RR = 1.39, 95% CI = 1.12-1.73) with low heterogeneity in infants. There were no significant observations of other system-specific malformations in the nervous system, eye, urogenital system, digestive system, respiratory system, or musculoskeletal system, respectively. There was no indication of publication bias. Conclusions The results of this meta-analysis indicate maternal fluoxetine use is associated with a slightly increased risk of cardiovascular malformations in infants. Health care providers and pregnant women must weigh the risk-benefit potential of these drugs when making decisions about whether to treat with fluoxetine during pregnancy. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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18. Sertraline use in the first trimester and risk of congenital anomalies: a systemic review and meta-analysis of cohort studies.
- Author
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Shen, Zi‐Qi, Gao, Shan‐Yan, Li, Shawn Xiang, Zhang, Tie‐Ning, Liu, Cai‐Xia, Lv, Hai‐Chen, Zhang, Yuan, Gong, Ting‐Ting, Xu, Xin, Ji, Chao, Wu, Qi‐Jun, and Li, Da
- Subjects
PREGNANT women ,HUMAN abnormalities ,SERTRALINE ,SEROTONIN ,INFANTS ,ANTIDEPRESSANTS ,META-analysis - Abstract
Aim To perform a meta-analysis of available cohort studies on the association between sertraline use by pregnant women in the first trimester and the findings of congenital anomalies in infants. Methods A comprehensive search of articles published from the index date up to 31
st December 2015 investigating the aforementioned associations was conducted on PubMed and Web of Science. Mesh headings used included the terms 'serotonin reuptake inhibitor,' 'sertraline,' 'congenital anomalies' and 'obstetrical outcome.' Results Twelve cohort studies that involved 6 468 241 pregnant women were identified. We summarized odds ratios (ORs) and 95% confidence intervals (CIs) of congenital anomalies using the random-effects model. Pregnant women who used sertraline in the first trimester had a statistically significant increased risk of infant cardiovascular-related malformations (OR = 1.36; 95% CI = 1.06-1.74; I2 = 64.4%; n = 12) as well as atrial and/or ventricular septal defects (OR = 1.36, 95% CI = 1.06-1.76; I2 = 62.2%; n = 8). Additionally, positive but nonsignificant associations between sertraline use and congenital anomalies of the nervous system (OR = 1.39; 95% CI = 0.83-2.32; I2 = 0%; n = 5), digestive system (OR = 1.23; 95% CI = 0.76-1.98; I2 = 0%; n = 5), eye, ear, face and neck (OR = 1.08; 95% CI = 0.33-3.55; I2 = 32.1%; n = 3), urogenital system (OR = 1.03; 95% CI = 0.73-1.46; I2 = 0%; n = 5), and musculoskeletal system (OR = 0.97; 95% CI = 0.69-1.36; I2 = 0%; n = 5) were observed. Conclusion This meta-analysis suggested that the use of sertraline use by pregnant women in the first trimester had an increased risk of cardiovascular-related malformations as well as atrial and/or ventricular septal defects in infants. Meanwhile, nonsignificant associations between sertraline use and other congenital anomalies were found. More cohort studies are warranted to provide detailed results of other congenital anomalies. [ABSTRACT FROM AUTHOR]- Published
- 2017
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19. Phytoremediation potential of transplanted bare-root seedlings of trees for lead/zinc and copper mine tailings.
- Author
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Shi, Xiang, Chen, Yi-Tai, Wang, Shu-Feng, Pan, Hong-Wei, Sun, Hai-Jing, Liu, Cai-Xia, Liu, Jian-Feng, and Jiang, Ze-Ping
- Subjects
PLANT species ,PHYTOREMEDIATION ,COPPER ions ,BIOACCUMULATION ,PLANT growth - Abstract
Selecting plant species that can overcome unfavorable conditions and increase the recovery of degraded mined lands remains a challenge. A pot experiment was conducted to evaluate the feasibility of using transplanted tree seedlings for the phytoremediation of lead/zinc and copper mine tailings. One-year-old bare-root of woody species (Rhus chinensisMill,Quercus acutissimaCarruth,Liquidambar formosanaHance,Vitex trifoliaLinn. var.simplicifoliaCham,Lespedeza cuneataandAmorpha fruticosaLinn) were transplanted into pots with mine tailings and tested as potential metal-tolerant plants. Seedling survival, plant growth, root trait, nutrient uptake, and metal accumulation and translocation were assessed. The six species grew in both tailings and showed different tolerance level.A. fruticosawas highly tolerant of Zn, Pb and Cu, and grew normally in both tailings. Metal concentrations were higher in the roots than in the shoots of the six species. All of the species had low bioconcentration and translocation factor values. However,R. chinensisandL. formosanahad significantly higher translocation factor values for Pb (0.88) and Zn (1.78) than the other species. The nitrogen-fixing species,A. fruticosa,had the highest tolerance and biomass production, implying that it has great potential in the phytoremediation of tailing areas in southern China. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
20. Associations between Passive Maternal Smoking during Pregnancy and Preterm Birth: Evidence from a Meta-Analysis of Observational Studies.
- Author
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Cui, Hong, Gong, Ting-Ting, Liu, Cai-Xia, and Wu, Qi-Jun
- Subjects
PREGNANT women ,WOMEN'S tobacco use ,SMOKING ,HEALTH ,PREMATURE labor ,META-analysis ,MEDICAL databases ,SOCIOECONOMIC factors - Abstract
Previous studies investigating the relationship between passive maternal smoking and preterm birth reveal inconsistent results. We conducted the current meta-analysis of observational studies to evaluate the relationship between passive maternal smoking and preterm birth. We identified relevant studies by searching PubMed, EMBASE, and ISI Web of Science databases. We used random-effects models to estimate summary odds ratios (SORs) and 95% confidence intervals (CIs) for aforementioned association. For the analysis, we included 24 studies that involved a total of 5607 women who experienced preterm birth. Overall, the SORs of preterm birth for women who were ever exposed to passive smoking versus women who had never been exposed to passive smoking at any place and at home were 1.20 (95%CI = 1.07–1.34,I
2 = 36.1%) and 1.16 (95%CI = 1.04–1.30,I2 = 4.4%), respectively. When we conducted a stratified analysis according to study design, the risk estimate was slightly weaker in cohort studies (SOR = 1.10, 95%CI = 1.00–1.21,n = 16) than in cross-sectional studies (SOR = 1.47, 95%CI = 1.23–1.74,n = 5). Additionally, the associations between passive maternal smoking and preterm birth were statistically significant for studies conducted in Asia (SOR = 1.26, 95%CI = 1.05–1.52), for studies including more than 100 cases of preterm birth (SOR = 1.22, 95%CI = 1.05–1.41), and for studies adjusted for maternal age (SOR = 1.27,95%CI = 1.09–1.47), socioeconomic status and/or education (SOR = 1.28, 95%CI = 1.10–1.49), body mass index (SOR = 1.33, 95%CI = 1.04–1.71), and parity (SOR = 1.27, 95%CI = 1.13–1.43). Our findings demonstrate that passive maternal smoking is associated with an increased risk of preterm birth. Future prospective cohort studies are warranted to provide more detailed results stratified by passive maternal smoking during different trimesters of pregnancy and by different types and causes of preterm birth. [ABSTRACT FROM AUTHOR]- Published
- 2016
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21. Ontogeny and kinetics of carnitine palmitoyltransferase I in hepatopancreas and skeletal muscle of grass carp ( Ctenopharyngodon idella).
- Author
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Hu, Wei, Luo, Zhi, Mai, Kang-Sen, Liu, Cai-Xia, and Zheng, Jia-Lang
- Published
- 2015
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22. Genome-wide screen of promoter methylation analysis of ES cells and ES derived epidermal-like cells.
- Author
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Zhang, Ren‐li, Meng, Jin‐xiu, Liu, Cai‐xia, Zhang, Li‐li, Han, Dong, Cai, Jia‐jie, and Wen, An‐min
- Abstract
Embryonic stem cells (ESCs) are a population of pluripotent cells which can differentiate into different cell types. However, there are few reports with regard to differentiate ESCs into epidermal cells in vitro. In this study, we aimed to investigate differentially methylated promoters involved in process of differentiation from ESCs into epidermal-like cells (ELCs) induced by human amnion. We successfully induced ESCs into ELCs, which expressed the surface markers of CK19, CK15 and β1-integrin. With MeDIP-chip arrays, we identified 3435 gene promoters to be differentially methylated, involving 894 HCP (high CpG-containing promoter), 974 ICP (intermediate CpG-containing promoter) and 1567 LCP (low CpG-containing promoter) among all the 17 500 DNA methylation regions of gene promoters in both ESCs and ELCs. Gene oncology and pathway analysis demonstrated that these genes were involved in all the three categories of GO enrichment analysis, including biological process, molecular function and cellular component. All these data suggested that embryonic stem cells can differentiate into epidermal-like cells and promoter methylation is of great importance in this process. Copyright © 2015 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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23. FSM-based method for detecting state mechanism of protocol.
- Author
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PAN Zhun-yang, LIU Cai-xia, and LIU Shu-xin
- Abstract
Detecting the state mechanism of protocol can effectively improve the test comprehensiveness when testing the stability of network. This paper proposed a detection method of the state mechanism of protocol based on finite state machine. First, this method established an FSM model of certain message sending entity of testing protocol and determined the input set. Second, during the test, it monitored state transitions of sending entity and generated a state transition diagram. Finally, it determined the state mechanism of protocol message and defined trigger conditions of stateful message according to the state transition diagram. It determined the state mechanism of protocol after summarizing and classifying the tested messages. This paper built a lab environment to test and verify the effectiveness of this method. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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24. E-CVFDT: An improving CVFDT method for concept drift data stream.
- Author
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Liu, Gang, Cheng, Hong-rong, Qin, Zhi-guang, Liu, Qiao, and Liu, Cai-xia
- Published
- 2013
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25. A novel barrier coverage scheme of WSN based on trajectory prediction.
- Author
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Li Ming-ming, Huang Ting-lei, Liu Cai-xia, and Tang Xiang-jiao
- Published
- 2010
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26. Research of P2P architecture based on cloud computing.
- Author
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Zhao Peng, Huang Ting-lei, Liu Cai-xia, and Wang Xin
- Published
- 2010
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27. Dynamic Self-Shielding Bus Encoding for Signal Integrity Enhancement and Low Power in NOCs.
- Author
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Liu Cai-Xia, Shi Feng, and Zhang Hong-Li
- Published
- 2008
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28. Decreasing the index change of grating with trapezoid index modulation.
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Wang, Guo-Dong, Liu, Cai-Xia, Sun, Dong-Ming, Guo, Wen-Bin, and Chen, Wei-You
- Published
- 2006
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29. Study of micro-actuator with electrostatic actuating.
- Author
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Sun, Dong-Ming, Dong, Wei, Wang, Guo-Dong, Liu, Cai-Xia, and Chen, Wei-You
- Published
- 2006
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30. Optimization and fabrication of a polymeric-arrayed waveguide grating multiplexer.
- Author
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Guo, Wenbin, Ma, Chunsheng, Chen, Wei-You, Liu, Cai-Xia, Dong, Wei, Zhang, Daming, Cui, Zhanchen, and Liu, Shiyong
- Published
- 2002
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31. Design and loss characteristics of an 8x8 polymer arrayed-waveguide grating multi/demultiplexer.
- Author
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Guo, Wenbin, Chen, Wei-You, Ma, Chunsheng, Dong, Wei, Liu, Cai-Xia, and Liu, Shiyong
- Published
- 2001
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32. Novel mutations of the ADAR1 gene in two Chinese families with dyschromatosis symmetrica hereditaria.
- Author
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Lv, Yuan, Zhao, Yan, Xu, Xue‐Gang, Jiang, Hong‐kun, and Liu, Cai‐Xia
- Subjects
ADENOSINE deaminase ,GENETIC mutation ,POLYMERASE chain reaction ,AMINO acids ,MELANOCYTES - Abstract
The article presents a case study of two Chinese families with dyschromatosis symmetrica hereditaria (DSH) who exhibited pathogenic mutations in the adenosine deaminase acting on RNA 1 (ADAR1) gene. Topics discussed include the amplification of ADAR1 gene through polymerase chain reaction, the amino acid change through the missense mutation, and the genes participating in melanosome synthesis and transport and melanocyte development.
- Published
- 2016
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33. Derivation of human embryonic stem cell lines without any exogenous growth factors.
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Liu, Cai Xia, Zhang, Ren Li, Gao, Jun, Li, Tao, Ren, Zi, Zhou, Can Quan, and Wen, An Min
- Published
- 2014
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34. Kinetics of Carnitine Palmitoyltransferase I (CPT I) in Chinese sucker ( Myxocyprinus asiaticus) Change with its Development.
- Author
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Liu, Cai‐Xia, Luo, Zhi, Hu, Wei, Tan, Xiao‐Ying, Zheng, Jia‐Lang, Chen, Qi‐Liang, and Zhu, Qing‐Ling
- Abstract
The present study was conducted to evaluate the ontogeny and kinetic of CPT I in several tissues of the Chinese sucker Myxocyprinus asiaticus. To this end, liver, muscle and intestine tissues were examined at five various developmental stages of Chinese sucker: newly-hatched larvae, 68-day-old, 4-month-old, 1- and 2-year-old Chinese sucker, respectively. The total carnitine (TC) content in the liver increased from birth to 1-year-old Chinese sucker and then declined in the 2-year-old Chinese sucker. From the 68-day-old to the 1-year-old Chinese sucker, both free and total concentrations in muscle increased. Both acyl carnitine (AC) and TC concentrations in intestine were very variable at different stages. The ratio of AC to free carnitine (FC) in liver progressively increased from hatching to 4 months, and declined at the age of 1 year, and then increased by 2 years. In muscle, the highest and lowest ratios of AC/FC were observed at 68-days-old and 4 month-old Chinese sucker. The highest proportion of AC/FC in intestine was also observed at 68-day-old Chinese sucker. All the Chinese sucker larvae at hatching had a high value of the Michaelis constant ( K) for carnitine. Maximal velocity ( V) in intestine increased with age. V in liver and muscle increased with age except a decrease at 4 months in liver and at 2 years in muscle. The FC concentration in the examined tissues at all developmental stages were less than the respective K, indicating that Chinese suckers require supplemental carnitine in their food to ensure that CPT I activity is not constrained by carnitine availability. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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- View/download PDF
35. Evaluation method for IMS network attack effect based on fuzzy comprehensive evaluation.
- Author
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GUO Yan-zan, JI Xin-sheng, LIU Cai-xia, and CHEN Zhi-nan
- Subjects
IMS/VS (Computer system) ,CYBERTERRORISM ,FUZZY systems ,NETWORK performance ,MULTIMEDIA systems ,COMPUTER security - Abstract
For the purpose of a quantitative understand for IMS network's attack effect, this paper introduced an evaluation method for IMS's attack effect based on fuzzy comprehensive evaluation. It constructed the attack index tree on the basis of analyzing the possible attack flow, and introduced analytic hierarchy process to compute the indexes' power, and made comprehensive evaluation for IMS attack effects using the fuzzy comprehensive evaluation. To reduce the warp brought by the single fuzzy operator's properties, it selected several operators with different properties to evaluate and took the mean as the finally result. Finally, the examples validate the evaluation method is able to distinguish the attack effects resulted by different attack methods effectively, and can provide a reference to the security of IMS. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
36. Parity and Risk of Colorectal Cancer: A Dose-Response Meta-Analysis of Prospective Studies.
- Author
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Guan, Hong-Bo, Wu, Qi-Jun, Gong, Ting-Ting, Lin, Bei, Wang, Yong-Lai, and Liu, Cai-Xia
- Subjects
PARITY (Obstetrics) ,COLON cancer risk factors ,DRUG dosage ,META-analysis ,LONGITUDINAL method ,RELATIVE medical risk - Abstract
Background: Association between parity and colorectal cancer (CRC) risk has been investigated by several epidemiological studies but results are controversial, yet a comprehensive and quantitative assessment of this association has not been reported so far. Methods: Relevant published studies of parity and CRC were identified using MEDLINE, EMBASE and Web of Science databases through end of April 2013. Two authors independently assessed eligibility and extracted data. Eleven prospective studies reported relative risk (RR) estimates and 95% confidence intervals (CIs) of CRC risk associated with parity. We pooled the RR from individual studies using fixed- or random-effects models and carried out heterogeneity and publication bias analyses. Results: The summary RR for the ever parity vs. nulliparous was 0.95 (95% CI: 0.88–1.02), with no heterogeneity (Q = 9.04, P = 0.443, I
2 = 0.5%). Likewise, no significant association was yielded for the highest vs. lowest parity number (RR = 1.02, 95% CI: 0.89–1.17), with moderate heterogeneity (Q = 17.48, P = 0.094, I2 = 37.1%). Dose-response analysis still indicated no effect of parity on CRC risk and the summary RR of per one livebirth was 0.99 (95% CI: 0.96–1.02), with moderate of heterogeneity (Q = 16.50, P<0.021, I2 = 57.6%). Similar results were observed among all the subgroup analyses. No evidence of publication bias and significant heterogeneity between subgroups were detected by meta-regression analyses. Conclusion: Results of this dose-response meta-analysis of prospective studies found that there was little evidence of an association between parity and CRC risk. [ABSTRACT FROM AUTHOR]- Published
- 2013
- Full Text
- View/download PDF
37. Protective Effects of Calcium Pre-Exposure Against Waterborne Cadmium Toxicity in Synechogobius hasta.
- Author
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Song, Yu-Feng, Luo, Zhi, Chen, Qi-Liang, Liu, Xu, Liu, Cai-Xia, and Zheng, Jia-Lang
- Subjects
CADMIUM poisoning ,PHYSIOLOGICAL effects of cadmium ,FISH physiology ,OSMOREGULATION ,FURNACE atomic absorption spectroscopy ,ETHYLENEDIAMINETETRAACETIC acid ,FISHES - Abstract
The present study was performed to evaluate the effects of calcium (Ca) pre-exposure and then waterborne cadmium (Cd) exposure on metal element accumulation, enzymatic activities, histology, and ultrastructure in Synechogobius hasta and test the hypothesis that Ca could protect against Cd-induced toxicity in the fish species. Three hundred sixty fish [initial mean weight 25.5 ± 0.1 g (mean ± SEM)] were stocked in 18 circular fiberglass tanks (water volume: 300 l), 9 of which were pre-exposed to Ca at a rate of 400 mg Ca/l for 9 days and then exposed to concentrations of 0, 79.3, and 158.6 μg Cd/l for 9 days. Another 9 tanks were cultured in natural seawater (no extra Ca addition) for 9 days and then exposed to concentrations of 0, 79.3, and 158.6 μg Cd/l for 9 days. Both Ca pre-exposure and then waterborne Cd exposure influenced the accumulation of metal elements [cadmium (Cd), copper, zinc, and iron] in several tissues (muscle, gill, liver, spleen, and intestine), changed hepatic intermediary metabolism, and induced histological and ultrastructural alterations in tissues. In general, Ca pre-exposure seemed to mitigate the severity of Cd-induced mortality and histopathological injuries indicating that Ca pre-exposure had the capacity to decrease Cd toxicity in S. hasta. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
38. Ontogenetic Development of the Digestive System in Agastric Chinese Sucker, Myxocyprinus asiaticus, Larvae.
- Author
-
Liu, Cai‐Xia, Luo, Zhi, Tan, Xiao‐Ying, and Gong, Shi‐Yuan
- Subjects
FISHES ,FISH digestive organs ,CATOSTOMIDAE ,FISH larvae ,FISH feeds ,EGG incubation ,ONTOGENY - Abstract
This study was conducted to determine the ontogenetic development of the digestive tract and its accessory structures (liver, pancreas, and gall bladder) in agastric larval Chinese sucker Myxocyprinus asiaticus with the histological and ultrastructural approaches from hatching to 56 days after hatching ( DAH). On the basis of its feeding mode, and analyzing the main histological features of the digestive system, larval development in Chinese sucker was divided into three stages from hatching: stage 1 (endotrophic period): 1-6 DAH; stage 2 (endoexotrophic period): 7-14 DAH; stage 3 (exclusively exotrophic period): from 15 DAH onward. At hatching, the digestive tract of the larvae consisted of an undifferentiated straight tube. At 4 DAH, the mouth opened, and the digestive tract was differentiated into buccopharyngeal cavity, esophagus and intestine. At 7 DAH, fish started to feed exogenously. Yolk sac was completely exhausted at 15 DAH. Until 56 DAH, the digestive tract of the larvae displayed regularly arranged microvilli, abundant vacuoles, and protein inclusion bodies. The pancreas, liver, and gall bladder were functional from 6 DAH, which enabled larvae to ingest, digest, and assimilate the first exogenous food. In comparison with teleosts that have a stomach, the development of the digestive tract of the agastric Chinese sucker seemed relatively slow. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
39. Purification and characterization of glucose 6-phosphate dehydrogenase (G6PD) from grass carp ( Ctenopharyngodon idella) and inhibition effects of several metal ions on G6PD activity in vitro.
- Author
-
Hu, Wei, Zhi, Luo, Zhuo, Mei-Qin, Zhu, Qing-Ling, Zheng, Jia-Lang, Chen, Qi-Liang, Gong, Yuan, and Liu, Cai-Xia
- Subjects
GLUCOSE-6-phosphate dehydrogenase ,CTENOPHARYNGODON idella ,FISH enzymes ,PENTOSE phosphate pathway ,NICOTINAMIDE adenine dinucleotide phosphate ,FISH metabolism ,METAL ions ,IN vitro studies - Abstract
Glucose 6-phosphate dehydrogenase (G6PD) is a key enzyme catalyzing the first step of the pentose phosphate pathway which generates NADPH for anabolic pathways and protection systems in various organisms, including fish. In the present study, G6PD was purified from grass carp ( Ctenopharyngodon idella) hepatopancreas using the methods of 2′,5′-ADP-Sepharose 4B affinity chromatography followed by DEAE Sepharose Fast Flow ion exchange chromatography. The characterization of G6PD and inhibition effects of several metal ions on G6PD activity in vitro were also determined. Grass carp hepatopancreas G6PD, with a specific activity of 18 U/mg protein, was purified 1,066-fold with a yield of 19.5 % and Mr of 71.85 kDa. The enzyme had a temperature optimum of 42 °C, pH optimum of 7.5 and 9.0. The K values for G6-P and NADP were determined to be 0.026, 0.0068 mM, respectively. The V values for G6-P and NADP were 2.20 and 2.27 μM min mg protein, respectively. The catalytic efficiency for G6-P and NADP as the substrates was 0.085 and 0.334 × 10 min mg protein, respectively. Inhibition effects of metal ions on the purified G6PD activity indicated that IC values of Zn, Mn, Al, Cu, and Cd were 0.42, 0.54, 0.94, 1.20, and 4.17 mM, respectively. The Ki constants of Zn, Al, Cu, and Cd were 0.52, 1.12, 0.26, and 4.8 mM, respectively. Zn, Al, and Cd showed competitive inhibition, while Cu inhibited the G6PD in a noncompetitive inhibition manner. Our study provided important information about the control of the grass carp liver PPP, the biosynthesis of several important related biomolecules, and the status of detoxification systems in grass carp liver in relation to metabolism. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
40. Effects of Waterborne Chronic Copper Exposure on Hepatic Lipid Metabolism and Metal-Element Composition in Synechogobius hasta.
- Author
-
Chen, Qi-Liang, Luo, Zhi, Liu, Xu, Song, Yu-Feng, Liu, Cai-Xia, Zheng, Jia-Lang, and Zhao, Yan-Hong
- Subjects
COPPER poisoning ,HEPATITIS E ,LIPID metabolism ,GOBIIDAE ,BODY composition of fish ,LIPID synthesis - Abstract
The present study was conducted to determine hepatic lipid metabolism and metal-element composition in Synechogobius hasta exposed to waterborne chronic copper (Cu) concentrations of control, 57, and 118 μg Cu/l, respectively, for 30 days. Growth decreased, but hepatosomatic index, viscerosomatic index, and hepatic lipid content increased with increasing waterborne Cu levels. Staining with oil red O showed extensive steatosis in liver of Cu-exposed fish. Cu exposure increased hepatic 6-phosphogluconate dehydrogenase, glucose-6-phosphate dehydrogenase, and malic enzyme activities, whereas fatty acid synthetase, isocitrate dehydrogenase, and carnitine palmitoyltransferases I activities remained unaffected. Cu, zinc, iron, and manganese contents were also changed in several tissues (gill, liver, spleen, gastrointestinal tract, and muscle) in a tissue-, dose-, and time-dependent manner. This was the first study to examine the effects of waterborne Cu exposure on several enzymatic activities mediating hepatic lipogenesis and lipolysis in fish as well as to show that waterborne Cu exposure could enhance the metabolism of lipid synthesis and consequently induce the increase of hepatic lipid deposition in S. hasta. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
41. Effect of Dietary Fish Meal Replacement by Canola Meal on Growth Performance and Hepatic Intermediary Metabolism of Genetically Improved Farmed Tilapia Strain of Nile Tilapia, Oreochromis niloticus, Reared in Fresh Water.
- Author
-
Luo, Zhi, Liu, Cai-Xia, and Wen, Hua
- Subjects
NILE tilapia ,FISH feeds ,DIETARY supplements ,CANOLA meal ,FISH growth ,FISH metabolism ,FISH genetics ,FISH farming - Abstract
An 8-wk feeding trial was conducted to evaluate the potential of replacing fish meal with canola meal in experimental diets for genetically improved farmed tilapia (GIFT) strain of Nile tilapia, Oreochromis niloticus (mean initial weight: 20.0 ± 0.62 g, means ± SD), reared in fresh water. Six isonitrogenous (30% crude protein) and isolipidic (10%) diets were formulated with canola meal included at six levels of 0 (control), 11, 22, 33, 44, and 55%, replacing 0, 15, 30, 45, 60, and 75% fish meal, respectively. Growth performance and feed utilization showed no significant differences among the treatments. In general, dietary canola meal supplementation showed significant effect on hepatic composition of tilapia, but not muscle composition. Viscerosomatic index tended to increase with increasing dietary canola meal levels from 0 to 44%, and then declined when dietary canola meal levels further increased from 44 to 55%. Dietary fish meal replacement by canola meal significantly influenced several hepatic enzymatic activities, including succinate dehydrogenase, lactate dehydrogenase, malic dehydrogenase, lipoprotein lipase, and hepatic lipase, suggesting that dietary fish meal replacement by canola meal had significant effects on nutrient metabolism in the liver. Based on the information above, 75% of dietary fish meal could be replaced by canola meal with no effect on growth performance of GIFT strain of Nile tilapia. Use of canola meal in practical diets for GIFT stain of Nile tilapia may allow producers and feed mills to formulate more economical diets. [ABSTRACT FROM AUTHOR]
- Published
- 2012
- Full Text
- View/download PDF
42. Effect of dietary conjugated linoleic acid levels on growth performance, muscle fatty acid profile, hepatic intermediary metabolism and antioxidant responses in genetically improved farmed Tilapia strain of Nile tilapia O reochromis niloticus.
- Author
-
Luo, Zhi, Tan, Xiao-Ying, Liu, Cai-Xia, Li, Xiao-Dong, Liu, Xiang-Jiang, and Xi, Wen-Qiu
- Subjects
PHYSIOLOGICAL effects of conjugated linoleic acid ,NILE tilapia ,FATTY acids ,UNSATURATED fatty acids ,GLUTATHIONE peroxidase - Abstract
An 8-week feeding trial was conducted to determine the effect of dietary conjugated linoleic acid ( CLA) on growth performance, muscle fatty acid profile, hepatic intermediary metabolism and antioxidant responses in genetically improved farmed Tilapia ( GIFT) strain of O reochromis niloticus (initial body weight: 42.6 ± 0.4 g, mean ± standard deviation). Three replicated groups of GIFT strain of Nile tilapia were hand-fed to satiation, twice a day, with the diets in which CLA oil, containing mainly the bioactive cis-9, trans-11 and trans-10, cis-12 isomers, was included at 0 (control), 0.5%, 1%, 1.5%, 2% and 2.5%, respectively, at the expense of fish oil to maintain the constant lipid and energy levels. Growth performance and feed utilization showed no significant differences among the treatments ( P > 0.05). The dietary inclusion of CLA modified total percentages of the main groups of fatty acids. Increasing saturated fatty acid content and reduced mono-unsaturated fatty acid contents in muscle were observed with increasing dietary CLA inclusion ( P < 0.05). Total n-3 fatty acids and total polyunsaturated fatty acids tended to decline with increasing dietary CLA levels ( P < 0.05), but n-6 fatty acids showed no significant differences among the treatments ( P > 0.05). Dietary CLA supplementation resulted in the significant increase in the trans-10, cis-12 and cis-9, trans-11 CLA isomers in muscle ( P < 0.05) and also significantly influenced several hepatic enzymatic activities, such as succinate dehydrogenase, lactate dehydrogenase, malic dehydrogenase, lipoprotein lipase and hepatic lipase activities ( P < 0.05). Reduced superoxide dismutase and glutathione peroxidase activities, and the decline in malondialdehyde levels were observed in fish fed the CLA-supplemented diets ( P < 0.05), indicating that dietary CLA supplementation showed a powerful antioxidant effect for this fish species. Our study was the first report involved in the effect of dietary CLA inclusion on hepatic intermediary metabolism and antioxidant responses in fish, which could be used as indicators of nutritional and physiological status of the fish species. [ABSTRACT FROM AUTHOR]
- Published
- 2012
- Full Text
- View/download PDF
43. Successful Treatment of Two Patients with Postpartum Disseminated Intravascular Coagulation Complicated by Abdominal Compartment Syndrome.
- Author
-
Na, Quan, Liu, Cai-xia, Cui, Hong, Chen, Jing, Liu, Si-shi, and Li, Qiu-ling
- Subjects
DISSEMINATED intravascular coagulation ,BLOOD coagulation disorders ,OBSTETRICIANS ,PREGNANCY complications ,FATTY liver ,HYSTERECTOMY - Abstract
Disseminated intravascular coagulation (DIC) and abdominal compartment syndrome (ACS) are rare complications of pregnancy, and even more rare are cases with both complications occurring concomitantly. Obstetricians are relatively unfamiliar with these types of cases, the majority of which are fatal. We describe here a primigravida with acute fatty liver of pregnancy and a multipara with placental abruption who each developed uterine inertia complicated by postpartum DIC that required total hysterectomy. They developed ACS postoperatively and required decompressive laparotomy to alleviate increased intra-abdominal pressure and end-organ dysfunction. After timely decompressive laparotomy, both patients recovered without any additional complications and were discharged within 4 weeks of their initial admission. These 2 cases serve to remind obstetricians to consider the possibility of ACS whenever there is a fresh wound in the abdominal cavity of a patient with postpartum DIC. However, even when there is severe deterioration in the condition of a patient with ACS, immediate decompressive laparotomy may not be appropriate; the timing of the procedure is very important. Copyright © 2012 S. Karger AG, Basel [ABSTRACT FROM AUTHOR]
- Published
- 2012
- Full Text
- View/download PDF
44. Protective Effect of Prostaglandin E1 on Renal Microvascular Injury in Rats of Acute Aristolochic Acid Nephropathy.
- Author
-
Sun, Dong, Liu, Cai-Xia, Ma, Yan-Yan, and Zhang, Lin
- Subjects
KIDNEY blood-vessels ,WOUNDS & injuries ,BLOOD vessels ,PROSTAGLANDIN E1 ,LABORATORY rats ,CARCINOGENS ,GENE expression ,VASCULAR endothelial growth factors ,KIDNEY function tests - Abstract
Background: To investigate the renal microvascular injury in acute aristolochic acid nephropathy (AAN) and the protective effects of prostaglandin E1 (PGE1) in acute AAN. Methods: Female Sprague--Dawley rats were randomly divided into three groups. The rats in PGE1 group received Caulis Aristolochia manshuriensis (CAM) decoction by gavage for 5 days, and PGE1 was given by vena caudalis before gavage. The rats in model group were gavaged with CAM for 5 days, and the same dose of 0.9%% physiologic saline was given by vena caudalis. The rats in control group only received an equal daily volume of saline solution by gavage. Animals were killed at days 3, 5, and 7. Blood urea nitrogen (BUN), serum creatinine, and urinary protein were monitored before killing. Microvascular density was determined by JG12 immunostaining. The expression of angiogenic factor was assessed by vascular endothelial growth factor (VEGF). Tubulointerstitial hypoxia was assessed by hypoxia-inducible factor-1αα (HIF-1αα) expression. Results: CAM induced a significant decrease in VEGF expression and microvascular density in the kidney tissue, accompanied by a significant increase in HIF-1αα, which reduced renal function and increased 24-h urinary protein excretion rates. PGE1 lessened the capillary loss, relieved hypoxia, and protected renal function. No significant pathological changes were found in control rats. Conclusion: The renal microvascular injury in acute AAN is severe. PGE1 can significantly ameliorate the renal microvascular injury, relieve hypoxia, and protect renal function. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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45. Nonlinear optical effect of co-doped Mg, Zn: LiNbO 3.
- Author
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Li, Ming-Hua, Xu, Yu-Heng, Xu, Wu-Sheng, Liu, Cai-Xia, Zhang, Wan-Lin, and Shao, Zong-Shu
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- 2001
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46. Radiological and histopathological features of short rib-polydactyly syndrome type III and identification of two novel DYNC2H1 variants.
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Xia, Chun-Ling, Xiao, Shi-Qi, Yang, Xue, Liu, Cai-Xia, Qiu, Hao, Jiang, Hong-Kun, Li-Ling, Jesse, and Lyu, Yuan
- Subjects
HUMAN genetic variation ,MOLECULAR diagnosis ,DYNEIN ,POLYDACTYLY ,SYNDROMES - Abstract
Short rib-polydactyly syndrome type III (SRPS3) is a lethal perinatal skeletal disorder consisting of polydactyly and multi-system organ abnormalities. To further assess the pathogenicity of two pairs of compound heterozygotes and to search for novel molecular etiology, X-rays and hematoxylin and eosin staining were conducted in three cases: Two retrospective samples and a newly identified patient with SRPS3. In addition, next-generation sequencing was used to evaluate a fetus with SRPS3. Typical radiological features of the three cases included a long, narrow thorax with short ribs, shortened long bones, spurs at the metaphysis of the long bones and congenital bowing of the femurs. The present study also observed atypical histopathological changes, together with the absence of proliferation and abundance of retaining cartilage in the primary spongiosum. In addition, two novel compound heterozygous variants were identified in the dynein cytoplasmic 2 heavy chain 1 (DYNC2H1) gene of the fetus: NM_001080463.1, c.6591_6593delTGG (chr11:103055738-103055740); NM_001080463.1, c.7883T>C (chr11:103070000). The findings of the present study provided further confirmation of the pathogenicity of two compound heterozygous variants in two retrospective samples and identified novel compound heterozygous variants. These findings may improve our knowledge of the histopathological and radiological changes in patients with SRPS3 and the relative effects of DYNC2H1 variants. The findings of the present study may facilitate the clinical and molecular diagnosis of SRPS3. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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47. A small supernumerary marker chromosome resulting in mosaic partial tetrasomy 4q26-q31.21 in a foetus with multiple congenital malformations.
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Zhang, Zhi-Tao, Qi, Wen-Xu, Liu, Cai-Xia, Yin, Shao-Wei, Zhao, Yan, Li-Ling, Jesse, and Lv, Yuan
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- 2019
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48. Selective serotonin reuptake inhibitor use during early pregnancy and congenital malformations: a systematic review and meta-analysis of cohort studies of more than 9 million births.
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Gao, Shan-Yan, Wu, Qi-Jun, Sun, Ce, Zhang, Tie-Ning, Shen, Zi-Qi, Liu, Cai-Xia, Gong, Ting-Ting, Xu, Xin, Ji, Chao, Huang, Dong-Hui, Chang, Qing, and Zhao, Yu-Hong
- Subjects
HUMAN abnormalities ,SEROTONIN uptake inhibitors ,PSYCHIATRIC diagnosis ,CITALOPRAM ,PAROXETINE - Abstract
Background: In 2005, the FDA cautioned that exposure to paroxetine, a selective serotonin reuptake inhibitor (SSRI), during the first trimester of pregnancy may increase the risk of cardiac malformations. Since then, the association between maternal use of SSRIs during pregnancy and congenital malformations in infants has been the subject of much discussion and controversy. The aim of this study is to systematically review the associations between SSRIs use during early pregnancy and the risk of congenital malformations, with particular attention to the potential confounding by indication.Methods: The study protocol was registered with PROSPERO (CRD42018088358). Cohort studies on congenital malformations in infants born to mothers with first-trimester exposure to SSRIs were identified via PubMed, Embase, Web of Science, and the Cochrane Library databases through 17 January 2018. Random-effects models were used to calculate summary relative risks (RRs).Results: Twenty-nine cohort studies including 9,085,954 births were identified. Overall, use of SSRIs was associated with an increased risk of overall major congenital anomalies (MCAs, RR 1.11, 95% CI 1.03 to 1.19) and congenital heart defects (CHD, RR 1.24, 95% CI 1.11 to 1.37). No significantly increased risk was observed when restricted to women with a psychiatric diagnosis (MCAs, RR 1.04, 95% CI 0.95 to 1.13; CHD, RR 1.06, 95% CI 0.90 to 1.26). Similar significant associations were observed using maternal citalopram exposure (MCAs, RR 1.20, 95% CI 1.09 to 1.31; CHD, RR 1.24, 95% CI 1.02 to 1.51), fluoxetine (MCAs, RR 1.17, 95% CI 1.07 to 1.28; CHD, 1.30, 95% CI 1.12 to 1.53), and paroxetine (MCAs, RR 1.18, 95% CI 1.05 to 1.32; CHD, RR 1.17, 95% CI 0.97 to 1.41) and analyses restricted to using women with a psychiatric diagnosis were not statistically significant. Sertraline was associated with septal defects (RR 2.69, 95% CI 1.76 to 4.10), atrial septal defects (RR 2.07, 95% CI 1.26 to 3.39), and respiratory system defects (RR 2.65, 95% CI 1.32 to 5.32).Conclusions: The evidence suggests a generally small risk of congenital malformations and argues against a substantial teratogenic effect of SSRIs. Caution is advisable in making decisions about whether to continue or stop treatment with SSRIs during pregnancy. [ABSTRACT FROM AUTHOR]- Published
- 2018
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49. Use of selective serotonin-reuptake inhibitors in the first trimester and risk of cardiovascular-related malformations: a meta-analysis of cohort studies.
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Zhang, Tie-Ning, Gao, Shan-Yan, Shen, Zi-Qi, Li, Da, Liu, Cai-Xia, Lv, Hai-Chen, Zhang, Yuan, Gong, Ting-Ting, Xu, Xin, Ji, Chao, and Wu, Qi-Jun
- Abstract
The relationship between selective serotonin-reuptake inhibitors (SSRIs) use during first trimester and cardiovascular-related malformations of infants is still uncertain. Therefore, we conducted this systematic review and meta-analysis to assess the aforementioned association. A systematic literature review identified studies for cohort studies about SSRIs use and cardiovascular-related malformations in PubMed and Web of Science. We summarized relative risk (RRs) and 95% confidence intervals (CIs) of cardiovascular-related malformations using random-effects model, and heterogeneity and publication-bias analyses were conducted. Eighteen studies met the inclusion criteria. Pregnant women who were exposed to SSRIs at any point during the first trimester had a statistically significant increased risk of infant cardiovascular-related malformations (RR = 1.26, 95%CI = 1.13-1.39), with moderate heterogeneity (I
2 = 53.6). The corresponding RR of atrial septal defects (ASD), ventricular septal defects (VSD), ASD and/or VSD was 2.06 (95%CI = 1.40-3.03, I2 = 57.8), 1.15 (95%CI = 0.97-1.36; I2 = 30.3), and 1.27 (95%CI = 1.14-1.42; I2 = 40.0), respectively. No evidence of publication bias and significant heterogeneity between subgroups was detected by meta-regression analyses. In conclusion, SSRIs use of pregnant women during first trimester is associated with an increased risk of cardiovascular-related malformations of infants including septal defects. The safety of SSRIs use during first trimester should be discussed to pregnant women with depression. [ABSTRACT FROM AUTHOR]- Published
- 2017
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50. Decreasing prevalence and time trend of gastroschisis in 14 cities of Liaoning Province: 2006-2015.
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Li, Na, Chen, Yan-Ling, Li, Jing, Li, Li-Li, Jiang, Cheng-Zhi, Zhou, Chen, Liu, Cai-Xia, Li, Da, Gong, Ting-Ting, Wu, Qi-Jun, and Huang, Yan-Hong
- Published
- 2016
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