25 results on '"Chunyan Xie"'
Search Results
2. Characteristics, scope of activity, and negative emotions in elderly women with urinary incontinence: Based on a longitudinal follow-up in Shanghai, China
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Yunwei Zhang, Changying Wang, Xiaoyan Yu, Lingshan Wan, Wendi Cheng, Chunyan Xie, Duo Chen, Yifan Cao, Jia Xue, Yuhong Niu, and Hansheng Ding
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Health (social science) ,General Medicine ,General Biochemistry, Genetics and Molecular Biology - Published
- 2023
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3. Biotransformation of bisphenol F by white-rot fungus Phanerochaete sordida YK-624 under non-ligninolytic condition
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Ru Yin, Xue Zhang, Beijia Wang, Jianbo Jia, Nana Wang, Chunyan Xie, Peiyang Su, Pengfei Xiao, Jianqiao Wang, Tangfu Xiao, Bing Yan, and Hirofumi Hirai
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White-rot fungi ,Cytochrome P-450 Enzyme System ,Phenols ,Degradation metabolism ,Bisphenol F ,Cytochrome P450 ,General Medicine ,Benzhydryl Compounds ,Phanerochaete ,Transcriptomic analysis ,Applied Microbiology and Biotechnology ,Biotransformation ,Biotechnology - Abstract
Environmental bisphenol F (BPF) has a cyclic endocrine disruption effect, seriously threatening animal and human health. It is frequently detected in environmental samples worldwide. For BPF remediation, biological methods are more environmentally friendly than physicochemical methods. White-rot fungi have been increasingly studied due to their potential capability to degrade environmental pollutants. Phanerochaete sordida YK-624 has been shown to degrade BPF by ligninolytic enzymes under ligninolytic conditions. In the present study, degradation of BPF under non-ligninolytic conditions (no production of ligninolytic enzymes) was investigated. Our results showed that BPF could be completely removed after 7-d incubation. A metabolite of BPF, 4,4'-dihydroxybenzophenone (DHBP) was identified by mass spectrometry and nuclear magnetic resonance, and DHBP was further degraded by this fungus to form 4-hydroxyphenyl 4-hydroxybenzoate (HPHB). DHBP and HPHB were the intermediate metabolites of BPF and would be further degraded by P. sordida YK-624. We also found that cytochrome P450s played an important role in BPF degradation. Additionally, transcriptomic analysis further supported the involvement of these enzymes in the action of BPF degradation. Therefore, BPF is transformed to DHBP and then to HPHB likely oxidized by cytochrome P450s in P. sordida YK-624. Furthermore, the toxicological studies demonstrated that the order of endocrine-disrupting activity for BPF and its metabolites was HPHB BPF DHBP. KEY POINTS: • White-rot fungus Phanerochaete sordida YK-624 could degrade BPF. • Cytochrome P450s were involved in the BPF degradation. • The order of endocrine disrupting activity was: HPHB BPF DHBP.
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- 2022
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4. Uridine dynamic administration affects the circadian variation of bile acid metabolism in high-fat-diet-fed mice
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TIANTIAN ZHOU, YUMEI ZHANG, JUAN ZHANG, CHUNYAN XIE, ZHENYA ZHAI, and XIN WU
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General Medicine - Published
- 2022
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5. Enteromorpha prolifera polysaccharide–zinc complex modulates the immune response and alleviates LPS-induced intestinal inflammation via inhibiting the TLR4/NF-κB signaling pathway
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Tiejun Li, Xin Wu, Yumei Zhang, Teketay Wassie, Chunyan Xie, Xinyi Duan, and Haihua Wang
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chemistry.chemical_classification ,Chemistry ,medicine.medical_treatment ,Inflammation ,General Medicine ,Pharmacology ,Polysaccharide ,Acetic acid ,chemistry.chemical_compound ,Immune system ,Cytokine ,medicine ,TLR4 ,medicine.symptom ,Signal transduction ,Function (biology) ,Food Science - Abstract
Enteromorpha prolifera polysaccharide–zinc (EP–Zn), a kind of polysaccharide–zinc complex, has been shown to improve the immune response and reduce the inflammatory factors in weaned piglets. Yet, the molecular mechanism remains unclear. The present study was conducted to investigate the immunomodulating activity and anti-inflammatory mechanism of EP–Zn in mice. Different doses (350 mg kg−1, 700 mg kg−1, 1050 mg kg−1 and 1400 mg kg−1) of EP–Zn were administered to C57BL/6J mice for 28 days. The results showed that under physiological conditions, 350 mg kg−1 EP–Zn stimulated cytokine (TNF-α, IL-1β, IL-6 and IL-10) secrection, regulated the intestinal microbiota, and reduced the levels of short-chain fatty acids (SCFAs) (acetic acid and propionic acid). In addition, in the LPS-induced inflammation model, EP–Zn pretreatment effectively alleviated LPS-induced shortening of colonic length and increased MPO and DAO contents, improved intestinal physical barrier function by modulating mucosal structure, and attenuated intestinal inflammation via inhibiting the TLR4/NF-κB signaling pathway. These findings suggested that EP–Zn exerted immunomodulatory and anti-inflammatory activities under physiological and inflammatory conditions, respectively.
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- 2022
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6. Nanoselenium and Selenium Yeast Have Minimal Differences on Egg Production and Se Deposition in Laying Hens
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Xue Lin, Xin Wu, Yang-Kui Xiang, Yi-Qiang Huang, Tiantian Meng, Chunyan Xie, and Jianhua He
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Selenium yeast ,Antioxidant ,Endocrinology, Diabetes and Metabolism ,medicine.medical_treatment ,Clinical Biochemistry ,chemistry.chemical_element ,010501 environmental sciences ,Biology ,01 natural sciences ,Biochemistry ,Feed conversion ratio ,Inorganic Chemistry ,03 medical and health sciences ,chemistry.chemical_compound ,Animal science ,medicine ,0105 earth and related environmental sciences ,0303 health sciences ,Meal ,Liver and kidney ,030302 biochemistry & molecular biology ,Biochemistry (medical) ,General Medicine ,Antioxidant capacity ,chemistry ,Deposition (chemistry) ,Selenium - Abstract
The objective of this study was to compare the effects of nanoselenium (NS) and selenium yeast (SY) on the performance, egg selenium (Se) concentration, and anti-oxidative capacity of hens. A total of 216 Brown Hy-line hens (29-week old) were randomly allocated into three treatments (6 replicate/treatment, 12 hens/replicate). The pre-trial period lasted 7 days, and the experimental period lasted 35 days. Dietary treatments included corn-soybean meal basal diet (containing 0.16 μg Se/g, as control group), and basal diet supplemented with 0.3 mg Se/kg diet (Se was from NS or SY), called as SY group or NS group, respectively. At the end of the experiment, one hen per replicate from each treatment was slaughtered. Liver, spleen, and kidney tissues were sampled for the determination of Se concentrations. The results showed that NS or SY supplement significantly improved feed conversion ratio (P 0.05). Taken together, dietary supplemented with SY or NS improved the Se deposition in eggs, liver and kidney of laying hens, increased antioxidant activity, and NS supplement had greater Se deposition in the kidney tissue than SY supplement. SY or NS supplement could be considered to be applied for Se-enriched egg production.
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- 2020
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7. Risk factors of medical device-related pressure injury in intensive care units
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Chunyan Xie, Ailing Hu, Qing Zhou, Qiongli Zhu, Huaxiu Gan, Yuan Liu, Yuyu Duan, Lin Wang, and Wen Dang
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Related factors ,Adult ,Pressure Ulcer ,medicine.medical_specialty ,Medical device ,Pressure injury ,business.industry ,Prevalence ,General Medicine ,Intensive care unit ,law.invention ,Intensive Care Units ,medicine.anatomical_structure ,Cross-Sectional Studies ,law ,Risk Factors ,Intensive care ,Emergency medicine ,medicine ,Humans ,Stage (cooking) ,business ,General Nursing ,Nose - Abstract
Objectives Intensive care unit (ICU) patients are at high risk of medical device related pressure injury (MDRPI). This study aims to ascertain the MDRPI prevalence in ICU patients and analyse the risk factors of MDRPI. Background The occurrence of MDRPI not only increases hospitalisation time with pain and economic burden, but also causes medical disputes. A better understanding of this condition will increase knowledge and facilitate the ability to recognise and prevent MDRPI for clinical nursing staff. However, there are few multicentre studies of MDRPI prevalence in ICU patients in China. Design A cross-sectional study design was employed. Methods Data from 694 patients in 66 adult ICU at 30 hospitals in China were included between October 2018 and March 2019. The stage of each MDRPI was determined according to the definitions of National Pressure Ulcer Advisory Panel. The study methods were followed by the STORBE guidelines. Results The overall prevalence rate of MDRPI was 13.1% (91/694), with 98 anatomic locations in total. The most common stages of MDRPI were stage 1 (54.1%, 53/98), stage 2 (15.3%, 15/98) and mucosal membrane pressure injury (15.3%, 15/98). MDRPI mainly occurred in the finger (32.7%, 32/98), followed by nose (18.4%, 18/98). The prevalence rate of MDRPI caused by CPAP or BiPAP masks (25%) was highest. Lower Braden scores and having skin oedema were risk factors for MDRPI in adult ICU patients. Conclusion The prevalence of MDRPI in this study was still high. Nurses should take these related factors into consideration when taking care of ICU patients, and appropriate prevention measures should be adopted to decrease the prevalence of MDRPI. Relevance to clinical practice The study can help to improve the PI prevention efforts in ICU patients specific to medical device related PI.
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- 2021
8. Uridine attenuates obesity, ameliorates hepatic lipid accumulation and modifies the gut microbiota composition in mice fed with a high-fat diet
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Hugo R. de Jonge, Zheng Ruan, Zeyuan Deng, Xin Wu, Yilin Liu, Zhenya Zhai, Chunyan Xie, and Gastroenterology & Hepatology
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Male ,0301 basic medicine ,medicine.medical_specialty ,Gut flora ,Diet, High-Fat ,Mice ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,SDG 3 - Good Health and Well-being ,Internal medicine ,Nonalcoholic fatty liver disease ,medicine ,Organoid ,Animals ,Obesity ,Uridine ,Mice, Inbred ICR ,biology ,Lipid metabolism ,General Medicine ,Lipid Metabolism ,medicine.disease ,biology.organism_classification ,Gastrointestinal Microbiome ,030104 developmental biology ,Endocrinology ,Liver ,chemistry ,Composition (visual arts) ,Nucleoside ,030217 neurology & neurosurgery ,Food Science - Abstract
Uridine (UR) is a pyrimidine nucleoside that plays an important role in regulating glucose and lipid metabolism. The aim of this study was to investigate the effect of UR on obesity, fat accumulation in liver, and gut microbiota composition in high-fat diet (HFD)-fed mice. ICR mice were, respectively, divided into 3 groups for 8 weeks, that is, control (CON, n = 12), high fat diet (HFD, n = 16), and HFD + UR groups (0.4 mg mL-1 in drinking water, n = 16). UR supplementation significantly reduced the body weight and suppressed the accumulation of subcutaneous, epididymal, and mesenteric WAT in HFD-fed mice (P < 0.05). Meanwhile, UR also decreased the lipid droplet accumulation in the liver and liver organoids (P < 0.05). In addition, UR supplementation increased bacterial diversity and Bacteroidetes abundance, and decreased the Firmicutes-to-Bacteroidetes ratio in HFD-fed mice significantly (P < 0.05). UR promoted the growth of butyrate-producing bacteria of Odoribacter, unidentified-Ruminococcaceae, Intestinimonas, Ruminiclostridium, and unidentified-Lachnospiraceae. A close correlation between several specific bacterial phyla or genera and the levels of WAT weight, hepatic TC, or hepatic TG genera was revealed through Spearman's correlation analysis. These results demonstrated that UR supplementation could be beneficial by attenuating HFD-induced obesity and nonalcoholic fatty liver disease.
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- 2021
9. Efficacy and safety of tripterygium glycosides in the treatment of hyperthyroidism: A systemic review and meta-analysis
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Chunyan Xie, Shulei Jia, Chaozhu He, and Jun Gao
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medicine.medical_specialty ,Tripterygium ,MEDLINE ,Anti-Inflammatory Agents ,Traditional Chinese medicine ,Cochrane Library ,Hyperthyroidism ,03 medical and health sciences ,0302 clinical medicine ,Prednisone ,Internal medicine ,medicine ,Humans ,030212 general & internal medicine ,Glycosides ,Adverse effect ,Methimazole ,biology ,business.industry ,General Medicine ,Tripterygium Wilfordii ,biology.organism_classification ,thiamazole ,Clinical trial ,meta-analysis ,030220 oncology & carcinogenesis ,Meta-analysis ,Drug Therapy, Combination ,business ,Systematic Review and Meta-Analysis ,medicine.drug ,Research Article ,Drugs, Chinese Herbal - Abstract
Background: Hyperthyroidism is a condition in which the thyroid gland is overreactive and produces excess amounts of thyroid hormone. Tripterygium glycosides, traditional Chinese medicine has been widely used in the treatment of rheumatoid arthritis, nephrotic syndrome, hyperthyroidism and other diseases due to its anti-inflammatory and immunosuppressive effects. Evidence-based research is becoming popular especially with the application of Chinese traditional medicine. This paper systematically reviews and evaluates existing clinical data on the efficacy and safety of Tripterygium glycosides in the treatment of hyperthyroidism. Materials and methods: PubMed, Cochrane library and EMBase, Chinese biomedical literature database (CBM), Chinese journal full-text database (CNKI), Wan fang digital periodical full-text database and China Science and Technology Journal Database (VIP) were searched based on the defined inclusion and exclusion criteria. Data extraction, research quality assessment and meta-analysis were conducted with RevMan5.3 software. Trial sequential analysis (TSA) was used to evaluate information size and treatment benefits. Results: Seventeen randomized controlled clinical trials with 1536 participants were included in the systematic review. In the meta-analysis, there were two subgroups: Tripterygium glycosides combined with thiamazole and prednisone group; Tripterygium glycosides combined with thiamazole group. The study results revealed that the degree of exophthalmos, FT3, FT4, BGP, and AKP decreased while TSH, SOD, GSH-PX increased after the addition of Tripterygium glycosides. This study results suggested that Tripterygium glycosides combined with western medicine are an effective therapy for hyperthyroidism. Conclusion: This study indicates that Tripterygium glycosides enhances the effect of thiamazole and prednisone in the treatment of hyperthyroidism and without increasing the risk of adverse events.
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- 2020
10. Normality mediates the effect of symmetry on facial attractiveness
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Dongyan Ren, Guomei Zhou, Ruoying Zheng, Chunyan Xie, and Junhao Pan
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Male ,Averageness ,Future studies ,media_common.quotation_subject ,Experimental and Cognitive Psychology ,050105 experimental psychology ,Structural equation modeling ,Fluctuating asymmetry ,03 medical and health sciences ,Symmetry ,Beauty ,0302 clinical medicine ,Arts and Humanities (miscellaneous) ,Asian People ,Developmental and Educational Psychology ,Facial attractiveness ,Psychology ,Humans ,0501 psychology and cognitive sciences ,Normality ,media_common ,Sex Characteristics ,05 social sciences ,General Medicine ,Models, Theoretical ,Prototype ,BF1-990 ,stomatognathic diseases ,Face ,Symmetry (geometry) ,030217 neurology & neurosurgery ,Cognitive psychology - Abstract
Although symmetry, averageness, and sexual dimorphism are usually considered important to facial attractiveness, there are mixed findings regarding whether and how symmetry influences facial attractiveness. The present study introduced “facial normality” to explain the inconsistency of previous research. We hypothesized that symmetry only increased facial attractiveness when it improved facial normality. We manipulated symmetry and normality simultaneously on sixteen Chinese male faces and asked participants to rate the perceived symmetry, perceived normality, and facial attractiveness. The results demonstrated an interactive effect of symmetry and normality on facial attractiveness. The structural equation model results showed two paths from symmetry to facial attractiveness: (1) Symmetry reduced facial attractiveness by decreasing perceived normality; (2) Symmetry increased facial attractiveness by increasing the perceived symmetry and then improving perceived normality. In other words, perceived normality acted as a mediator between symmetry and facial attractiveness. The present study provides a solution to the different effects of symmetry on facial attractiveness in previous studies and suggests that future studies on symmetry and facial attractiveness should consider the mediating role of normality.
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- 2020
11. Uridine Metabolism and Its Role in Glucose, Lipid, and Amino Acid Homeostasis
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Chunyan Xie, Jun Fang, Yumei Zhang, and Songge Guo
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Review Article ,Carbohydrate metabolism ,General Biochemistry, Genetics and Molecular Biology ,chemistry.chemical_compound ,Amino acid homeostasis ,Glucose homeostasis ,Animals ,Homeostasis ,Humans ,Amino Acids ,Uridine ,General Immunology and Microbiology ,Chemistry ,Catabolism ,Lipid metabolism ,General Medicine ,Lipid Metabolism ,Fatty Liver ,Glucose ,Biochemistry ,Medicine ,Chemical and Drug Induced Liver Injury ,Nucleoside - Abstract
Pyrimidine nucleoside uridine plays a critical role in maintaining cellular function and energy metabolism. In addition to its role in nucleoside synthesis, uridine and its derivatives contribute to reduction of cytotoxicity and suppression of drug-induced hepatic steatosis. Uridine is mostly present in blood and cerebrospinal fluid, where it contributes to the maintenance of basic cellular functions affected by UPase enzyme activity, feeding habits, and ATP depletion. Uridine metabolism depends on three stages: de novo synthesis, salvage synthesis pathway and catabolism, and homeostasis, which is tightly relating to glucose homeostasis and lipid and amino acid metabolism. This review is devoted to uridine metabolism and its role in glucose, lipid, and amino acid homeostasis.
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- 2019
12. Uridine/UMP metabolism and their function on the gut in segregated early weaned piglets
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Xin Wu, Dan Wan, Yulong Yin, Guanya Li, Yan Zhang, Qinhua Wang, and Chunyan Xie
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0301 basic medicine ,Diarrhea ,Swine ,Metabolite ,Crypt ,Weaning ,Biology ,Andrology ,Jejunum ,03 medical and health sciences ,chemistry.chemical_compound ,Oral administration ,In vivo ,Intestine, Small ,medicine ,Uridine monophosphate ,Animals ,Claudin-3 ,Intestinal Mucosa ,Uridine ,030109 nutrition & dietetics ,Intestinal villus ,General Medicine ,Cadherins ,Intestines ,030104 developmental biology ,medicine.anatomical_structure ,chemistry ,Dietary Supplements ,Uridine Monophosphate ,Food Science - Abstract
Uridine monophosphate (UMP) is a major nucleotide analogue in mammalian milk and uridine (UR) is its gastro-intestinal metabolite in vivo. This study aims to investigate the functional effects of UMP and UR on the gut in vitro and in vivo. Twenty-one piglets were randomly allotted into three groups, the control group, UMP group and UR group, and orally administered UMP or UR for 10 days. Results showed that UMP and UR supplements improved the ADG of piglets, and decreased the diarrhea rate. UR increased the jejunum villus length/crypt depth ratio, Claudin-3 and E-cadherin expression, and the pyrimidine nucleotide metabolic enzymes including CMPK1, RRM2, UPRT, CTPS1 and CTPS2 in the duodenal mucosa. Both the UMP and UR decreased the expression of CAD and RRM2 at the jejunal mucosa. Moreover, UMP and UR increased the apoptosis ratio of intestinal epithelial cells in in vivo and in vitro experiments. Taken together, oral administration of UR and UMP could improve the small intestinal morphology, promote epithelial cell apoptosis and renewal of intestinal villus tips, and benefit intestinal development and health thus improving the growth performance and reducing the risk of diarrhea in early-weaned piglets.
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- 2019
13. Effect of maternal supplementation with chitosan oligosaccharide on the antioxidant capacity of suckling piglets 1
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Huanming Yang, Xiongwei Wu, Y. Wang, Zhiyong Fan, Yulong Yin, Chunyan Xie, Dingfu Xiao, and Cimin Long
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0301 basic medicine ,Chemistry ,0402 animal and dairy science ,04 agricultural and veterinary sciences ,General Medicine ,040201 dairy & animal science ,03 medical and health sciences ,Antioxidant capacity ,030104 developmental biology ,CHITOSAN OLIGOSACCHARIDE ,Genetics ,Animal Science and Zoology ,Food science ,Food Science - Published
- 2016
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14. Higher Incidence of Deteriorated Mental Health in Older People Being Mistakenly Labeled as Dementia: A Two-Year Consecutive Community-Dwelling Study in Shanghai, China
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Yitong Yang, Lixia Du, Chunyan Xie, Hansheng Ding, Zeyun Feng, Duo Chen, Changying Wang, Hong-Yun Xin, and Chunlin Jin
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Male ,Gerontology ,China ,medicine.medical_specialty ,Activities of daily living ,MEDLINE ,Stigma (botany) ,General Biochemistry, Genetics and Molecular Biology ,03 medical and health sciences ,0302 clinical medicine ,Activities of Daily Living ,mental disorders ,medicine ,Humans ,Dementia ,030212 general & internal medicine ,Psychiatry ,Aged ,Aged, 80 and over ,030214 geriatrics ,business.industry ,Incidence ,Incidence (epidemiology) ,General Medicine ,medicine.disease ,Mental health ,Female ,Social exclusion ,Independent Living ,business ,Independent living - Abstract
Dementia has been increasingly paid attention by policymakers in China. However, the majority of the public has an indistinct concept of dementia and its diagnostic criteria. Therefore, many abnormal characteristics and actions of older people are labeled as having dementia while diagnosed without dementia. We examined a multi-stage cluster sample of 11,223 participants aged 60 years and above who have been clinically confirmed by general practitioners as not having dementia in 2013, and 7,861 participants were willing to participate the following study and were followed-up in 2014. To assess the differences of status of older people who were mistakenly labeled as having dementia or not, we asked main caregivers 'Do you think this older person suffers from dementia?', and found out that 244 participants had been mistakenly labeled as having dementia since 2013. Related effects were measured using international generic scales as well, and the results showed that participants with better physical status deteriorated more rapidly if they were mistakenly labeled as having dementia. Additionally, the mental health of these 244 participants also deteriorated more quickly. Older adults that were not labeled as having dementia were more willing to participate in social activities relative to their labeled counterparts. In conclusion, being mistakenly labeled as having dementia without a medical diagnosis impaired older adults' physical functioning and mental health. Moreover, the reduction of social activities of labeled older people leads to separation and social exclusion.
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- 2016
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15. Effects of Different Selenium Sources on Laying Performance, Egg Selenium Concentration, and Antioxidant Capacity in Laying Hens
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Yilin Liu, Ruilin Huang, Xin Wu, Yajun Yao, Yi-Qiang Huang, Zhang Yawei, Chunyan Xie, Tiantian Meng, and Bin Zhang
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Selenium yeast ,GPX1 ,Endocrinology, Diabetes and Metabolism ,Eggs ,Clinical Biochemistry ,chemistry.chemical_element ,010501 environmental sciences ,01 natural sciences ,Biochemistry ,Feed conversion ratio ,Antioxidants ,Inorganic Chemistry ,03 medical and health sciences ,chemistry.chemical_compound ,Selenium ,Animal science ,Sodium Selenite ,Animals ,0105 earth and related environmental sciences ,chemistry.chemical_classification ,0303 health sciences ,Meal ,Glutathione Peroxidase ,Methionine ,Glutathione peroxidase ,030302 biochemistry & molecular biology ,Biochemistry (medical) ,General Medicine ,chemistry ,GNMT ,Dietary Supplements ,Female ,Chickens - Abstract
Supplementation of selenium (Se) is a common practice in the poultry industry via sodium selenite (SS) and selenium yeast (SY), while the effects of nano-selenium (NS) on laying hens are poorly known. This study aimed to compare the effects of NS, SS, and SY on productivity; selenium (Se) deposition in eggs; and antioxidant capacity in laying hens. A total of 288 30-week-old Brown Hy-line laying hens were randomly assigned into four dietary treatments, which included corn-soybean meal basal diet (Con) without Se sources and basal diets supplemented with 0.3 mg Se/kg as SS, SY, or NS, respectively. The results exhibited that Se-supplemented treatments achieved greater egg production, egg weight, and daily egg mass, also better feed conversion ratio than Con group (p
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- 2018
16. Acute and sub-acute oral toxicological evaluations and mutagenicity of N-carbamylglutamate (NCG)
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Ruilin Huang, Xin Wu, Zheng Ruan, Zeyuan Deng, Tiejun Li, Xugang Shu, Yulong Yin, Chunyan Xie, and Dan Wan
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Male ,China ,medicine.medical_specialty ,Swine ,Feed additive ,Administration, Oral ,Pharmacology ,Toxicology ,medicine.disease_cause ,Rats, Sprague-Dawley ,Eating ,Mice ,Glutamates ,Oral administration ,In vivo ,Internal medicine ,medicine ,Animals ,Micronucleus Tests ,Hematology ,Mutagenicity Tests ,business.industry ,Body Weight ,Organ Size ,General Medicine ,Rats ,Toxicity ,Micronucleus test ,Female ,Histopathology ,business ,Genotoxicity ,Mutagens - Abstract
N-carbamylglutamate (NCG) is a metabolically stable analog of N-acetylglutamate that activates carbamyl phosphate synthase-1, a key arginine synthesis enzyme in enterocytes. It is a promising feed additive in swine in China. In this study, we assessed the acute and sub-acute toxicity of NCG in Sprague-Dawley (SD) rats. All rats survived until they were killed at a scheduled time point. No adverse effects or mortality was observed following acute oral administration of 5000 mg/kg NCG to SD rats. No biologically significant or test substance-related differences were observed in body weights, feed consumption, clinical signs, a functional observational battery, organ weights, histopathology, ophthalmology, hematology, coagulation, and clinical chemistry parameters in any of the treatment groups in sub-acute doses of NCG at target concentrations corresponding to 500, 2000, and 3000 mg/kg/day for 28 days neither. In addition, no evidence of mutagenicity or genotoxicity was found, either in vitro in bacterial reverse mutation assay or in vivo in mice bone marrow micronucleus assay and sperm shape abnormality assay. On the basis of our findings, we conclude that NCG is a non-toxic substance with no genotoxicity.
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- 2015
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17. A Case Study of Pharmaceutical Pricing in China: Setting the Price for Off-Patent Originators
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Linan Wang, Jiangjiang He, Ying Peng, Lixia Du, Shanlian Hu, Chunyan Xie, Yabing Zhang, and Mingfei Xu
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China ,Economics and Econometrics ,Cost Control ,Drug Industry ,media_common.quotation_subject ,Review Article ,Drug Costs ,Reimbursement Mechanisms ,Fees, Pharmaceutical ,Economics ,Drugs, Generic ,Humans ,Quality (business) ,Economics, Pharmaceutical ,Reimbursement ,media_common ,Economic Competition ,Actuarial science ,Health economics ,Health Policy ,General Medicine ,Multiple-criteria decision analysis ,Purchasing ,Therapeutic Equivalency ,Quantitative analysis (finance) ,Market data ,Value (economics) - Abstract
This article aims to define a value-based approach to pricing and reimbursement for off-patent originators using a multiple criteria decision analysis (MCDA) approach centered on a systematic analysis of current pricing and reimbursement policies in China. A drug price policy review was combined with a quantitative analysis of China’s drug purchasing database. Policy preferences were identified through a MCDA performed by interviewing well-known academic experts and industry stakeholders. The study findings indicate that the current Chinese price policy includes cost-based pricing and the establishment of maximum retail prices and premiums for off-patent originators, whereas reference pricing may be adopted in the future. The literature review revealed significant differences in the dissolution profiles between originators and generics; therefore, dissolution profiles need to be improved. Market data analysis showed that the overall price ratio of generics and off-patent originators was around 0.54–0.59 in 2002–2011, with a 40 % price difference, on average. Ten differentiating value attributes were identified and MCDA was applied to test the impact of three pricing policy scenarios. With the condition of implementing quality consistency regulations and controls, a reduction in the price gap between high-quality off-patent products (including originator and generics) seemed to be the preferred policy. Patents of many drugs will expire within the next 10 years; thus, pricing will be an issue of importance for off-patent originators and generic alternatives.
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- 2015
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18. Release of feruloylated oligosaccharides from wheat bran through submerged fermentation by edible mushrooms
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Chunyan Xie, Zhiyan Wu, Zhenxin Gu, and Guo Hongzhen
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biology ,Bran ,Ganoderma ,food and beverages ,General Medicine ,Cellulase ,biology.organism_classification ,Applied Microbiology and Biotechnology ,Ferulic acid ,chemistry.chemical_compound ,chemistry ,Biochemistry ,Cordyceps militaris ,biology.protein ,Xylanase ,Fermentation ,Pleurotus ostreatus ,Food science - Abstract
Wheat bran, a by-product of the flour industry, is believed to be a raw material for the production of feruloylated oligosaccharides (FOs) because of its high content of conjiont ferulic acid (FA). Studies were carried out to identify edible mushrooms that are able to release FOs from wheat bran. All the six tested mushrooms (Pleurotus ostreatus, Hericium erinaceum, Auricularia auricula, Cordyceps militaris, Agrocybe chaxingu, and Ganoderma lucium) were found to release FOs, and Agrocybe chaxingu had the highest yield, reaching 35.4 µM in wheat bran broth. Enzymes detection showed that these species secreted extracellular enzymes during fermentation, including cellulase and xylanase. Agrocybe chaxingu secreted the significant amount of xylanase (180 mU ml(-1) ), which was responsible for the release of FOs from wheat bran, while Hericium erinaceum secreted FA esterase which could disassemble FOs.
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- 2013
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19. The Acute and Chronic Effects of Monosodium l-Glutamate on Serum Iron and Total Iron-Binding Capacity in the Jugular Artery and Vein of Pigs
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Yulong Yin, Chunyan Xie, Jiang-Ning Hu, Wu Xin, Zeyuan Deng, Shu Xugang, and Jun Li
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medicine.medical_specialty ,Swine ,Monosodium glutamate ,Iron ,Endocrinology, Diabetes and Metabolism ,Clinical Biochemistry ,Spleen ,Biochemistry ,Inorganic Chemistry ,chemistry.chemical_compound ,Oral administration ,Total iron-binding capacity ,Jugular vein ,Internal medicine ,Sodium Glutamate ,Animals ,Medicine ,Kidney ,medicine.diagnostic_test ,business.industry ,Biochemistry (medical) ,Arteries ,General Medicine ,Surgery ,medicine.anatomical_structure ,Endocrinology ,chemistry ,Serum iron ,Jugular Veins ,business ,Artery - Abstract
We analyzed the effects of acute and chronic oral administration of monosodium l-glutamate (MSG) on serum iron (Fe) levels and total iron-binding capacity (TIBC) in piglets. In the first experiment, 12 piglets were randomly assigned to two groups: one fed a standard diet (SD) and the other fed an SD containing MSG (10 g/kg). On day 30, serum, liver, kidney, and spleen samples were collected to determine the Fe levels. In the second experiment, six pigs were surgically fitted with a catheter in the jugular artery and vein to investigate the dynamic changes of serum Fe and TIBC. Blood samples were taken from each pig via the catheter every 30 min, for a period of 4 h. The results show that MSG increases Fe levels in the spleen (P < 0.05) and in serum obtained from the jugular artery (P < 0.01). In addition, TIBC in serum obtained from the jugular artery demonstrated an increasing trend in pigs fed the MSG diet; however, this trend was not observed in the jugular vein. In conclusion, MSG increases Fe retention by enhancing TIBC in serum.
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- 2013
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20. Changes of HFRS Incidence Caused by Vaccine Intervention in Yichun City, China, 2005-2013
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Yun Xie, Chunyan Xie, Xiaoqing Liu, and Tianchen Zhang
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0301 basic medicine ,Adult ,Male ,China ,Orthohantavirus ,Population ,Rodentia ,Annual incidence ,03 medical and health sciences ,Age Distribution ,Environmental health ,parasitic diseases ,Medicine ,Animals ,Humans ,Cities ,education ,Epidemics ,Hantaan virus ,Hantavirus ,Demography ,education.field_of_study ,biology ,Ecology ,business.industry ,Incidence (epidemiology) ,Viral Vaccine ,Incidence ,virus diseases ,Viral Vaccines ,General Medicine ,Disease control ,030104 developmental biology ,Hemorrhagic Fever with Renal Syndrome ,Immunology ,biology.protein ,Female ,Immunization ,Public Health ,Antibody ,business - Abstract
Background Since 2009, the Hemorrhagic Fever with Renal Syndrome (HFRS) Targeted Expanded Program on Immunization (EPI) has been carried out in the 16-60 age population in Yichun City of Jiangxi Province. However, the annual reported incidences of HFRS in Yichun City Increased significantly from 2009 to 2013. Material/methods The information on HFRS reported cases were obtained from the China Information System for Disease Control and Prevention (CISDCP), and demographic data was collected from the Basic Information System. Hantavirus-specific antigen and antibody of rodent specimens were tested by enzyme-linked immunosorbent assay (ELISA) or immune fluorescent assay. Results The annual HFRS incidences among all age subgroups presented growth tendencies in non-EPI targeted regions and EPI targeted regions, except for the EPI target population. The annual incidences of EPI target population were stable at around 10 per 100,000 population from 2008 to 2013. HFRS annual incidence was significantly related to rat virus index among all age subgroups in non-EPI targeted regions and >60 age subgroup in EPI targeted regions. Conclusions HFRS vaccine implement has had a notable effect in HFRS prevention and control.
- Published
- 2016
21. Toxicological evaluation of ferrous N-carbamylglycinate chelate: Acute, Sub-acute toxicity and mutagenicity
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Xugang Shu, Xihong Zhou, Xin Wu, Chunyan Xie, Dan Wan, and Yulong Yin
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Male ,No-observed-adverse-effect level ,Drug Evaluation, Preclinical ,Pharmacology ,Toxicology ,medicine.disease_cause ,Median lethal dose ,Ferrous ,Rats, Sprague-Dawley ,Mice ,medicine ,Toxicity Tests, Acute ,Animals ,Ferrous Compounds ,No-Observed-Adverse-Effect Level ,Chemistry ,Mutagenicity Tests ,Body Weight ,General Medicine ,Organ Size ,Acute toxicity ,Rats ,Toxicity Tests, Subacute ,Toxicity ,Micronucleus test ,Female ,Genotoxicity - Abstract
Iron is an essential trace element that is vital important in various biological process. A deficiency in iron could induce public health problem e.g. anaemia, while an overload could induce ROS production, lipid peroxidation and DNA bases modifications. In the present study, a new iron fortifier was synthesized, and its acute/sub-acute toxicity was investigated. According to the improved Karber's method, the median lethal dose (LD50) of the ferrous N-carbamylglycinate in SD rat was 3.02 g/kg and the 95% confidence intervals were between 2.78 and 3.31 g/kg. No biologically significant or test substance-related differences were observed in body weights, feed consumption, clinical signs, organ weights, histopathology, ophthalmology, hematology, and clinical chemistry parameters in any of the treatment groups of ferrous N-carbamylglycinate at target concentrations corresponding to 150, 300, and 600 mg/kg/day for 28 days. The no observed adverse effect level (NOAEL) for ferrous N-carbamylglycinate was at least 600 mg/kg b.w. day in rats. In addition, no evidence of mutagenicity was found, either in vitro in bacterial reverse mutation assay or in vivo in mice bone marrow micronucleus assay and sperm shape abnormality assay. On the basis of our findings, we conclude that ferrous N-carbamylglycinate is a low-toxic substance with no genotoxicity.
- Published
- 2015
22. Supplementation of the sow diet with chitosan oligosaccharide during late gestation and lactation affects hepatic gluconeogenesis of suckling piglets
- Author
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Zheng Ruan, Zeyuan Deng, Cimin Long, Yulong Yin, Dingfu Xiao, Xin Wu, Zhiyong Fan, Xiaoyun Guo, and Chunyan Xie
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Blood Glucose ,medicine.medical_specialty ,Hepatic gluconeogenesis ,Offspring ,Swine ,animal diseases ,Hypoglycemia ,Biology ,Fatty Acids, Nonesterified ,Endocrinology ,Food Animals ,Pregnancy ,Internal medicine ,Lactation ,medicine ,Animals ,Amino Acids ,chemistry.chemical_classification ,Chitosan ,Gluconeogenesis ,Fatty acid ,General Medicine ,medicine.disease ,Animal Feed ,Amino acid ,Diet ,medicine.anatomical_structure ,Milk ,chemistry ,Animals, Newborn ,Liver ,Dietary Supplements ,Gestation ,Animal Science and Zoology ,Female ,Phosphoenolpyruvate carboxykinase ,Glycogen - Abstract
Chitosan oligosaccharide (COS) has a blood glucose lowering effect in diabetic rats and is widely used as a dietary supplement. However, the effect of COS on the offspring of supplemented mothers is unknown. This experiment investigates the effect of supplementing sows during gestation and lactation on the levels of plasma glucose on suckling piglets. From day 85 of gestation to day 14 of lactation, 40 pregnant sows were divided into two treatment groups and fed either a control diet or a control diet containing 30mgCOS/kg. One 14 day old piglet per pen was selected to collect plasma and tissue (8pens/diet). Performance, hepatic gluconeogenesis genes and proteins expression, amino acids contents in sow milk, hepatic glycogen and free fatty acid were determined. Results showed that supplementation of the maternal diet with COS improved daily gain and weaning weight (P
- Published
- 2015
23. Strategizing for environmentally sustainable praxis : the case of 'green operations'
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Chunyan Xie, Åge Gjøsæter, and Kjell Grønhaug
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strategizing ,Engineering ,Praxis ,business.industry ,media_common.quotation_subject ,Business Research ,General Medicine ,environmentally sustainable praxis ,business ,Management ,media_common ,strategy practices - Abstract
This is the accepted version of the following article: Strategizing for environmentally sustainable praxis : the case of "green operations", Beta. Scandinavian Journal of Business Research 2014, 28(2):154-172, which has been published in final form at https://www.idunn.no/beta/2014/02/strategizing_for_environmentally_sustainable_praxis_-_the_c. © Universitetsforlaget The paper investigates how a strategic idea to operate offshore service vessels in an environmentally sustainable way was transformed into practical realities. The research case was a campaign to reduce the consumption of diesel-fuel, in the paper referred to as the case of “green operations”. Our findings were seven key practices for realizing environmentally sustainable praxis. The practices were the creation and promotion of a strategic idea, concretizing how the idea could be transformed into practical realities, the construction of a goal-oriented and innovative contractual arrangement, encouraging the enactment of fuel-saving operations whenever possible, acknowledging middle managers on board the offshore service vessels as key strategy makers, and organizing the campaign as a competition among the vessels in carrying-out the most fuel-saving “green operations”. Finally, but not in the least, corporate managers following-up, supporting, and facilitating strategic activities, were identified as crucial.
- Published
- 2014
24. Effect of L-arginine on HSP70 expression in liver in weanling piglets
- Author
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Xin Wu, Yulong Yin, Tiejun Li, Zheng Ruan, Zeyuan Deng, Ruilin Huang, Fengna Li, and Chunyan Xie
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Pathology ,medicine.medical_specialty ,Arginine ,Swine ,animal diseases ,Blotting, Western ,Weanling ,L-arginine ,Weaning ,Biology ,Real-Time Polymerase Chain Reaction ,Andrology ,Weanling piglets ,Western blot ,medicine ,Animals ,HSP70 Heat-Shock Proteins ,HSP70 ,General Veterinary ,medicine.diagnostic_test ,General Medicine ,Organ Size ,veterinary(all) ,Hsp70 ,Animals, Suckling ,Blot ,Real-time polymerase chain reaction ,Liver ,Immunohistochemistry ,Research Article - Abstract
Background This study was conducted to evaluate the effects of L-arginine (Arg) on photomicrographs and HSP70 expression in the liver of weanling piglets. Twelve healthy Landrace × Yorkshire piglets that had been weaned at 21 d (average body weight 5.56 ± 0.51 kg) were randomly divided into a control group and an Arg group (6 g/kg feed). At age 28 d, all of the piglets were slaughtered to obtain liver samples to determine HSP70 expression by real-time PCR, western blot and immunohistochemistry. Results The results showed that, compared to control piglets, treatment with Arg decreased inflammatory reactions caused by weaning. The immunohistochemical localization of HSP70 in liver revealed strong expression in the Arg group. Arg increased HSP70 mRNA and HSP70 expression in the liver (P Conclusions These findings suggest that dietary supplementation with Arg could maintain liver health by inducing HSP70 expression in weanling piglets.
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- 2012
25. Chitosan oligosaccharide affects antioxidant defense capacity and placental amino acids transport of sows
- Author
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Chunyan Xie, Xin Wu, Siming Li, Qinhua Wang, Yulong Yin, Zhiyong Fan, and Cimin Long
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0301 basic medicine ,Antioxidant ,Swine ,medicine.medical_treatment ,Placenta ,Biological Transport, Active ,Biology ,Pregnancy Proteins ,Antioxidants ,Andrology ,03 medical and health sciences ,Pregnancy ,Antioxidant defense ,medicine ,Animals ,Amino Acids ,PI3K/AKT/mTOR pathway ,chemistry.chemical_classification ,Fetus ,Chitosan ,General Veterinary ,Amino acids transport ,0402 animal and dairy science ,Chitosan oligosaccharides ,04 agricultural and veterinary sciences ,General Medicine ,medicine.disease ,040201 dairy & animal science ,Animal Feed ,veterinary(all) ,Amino acid ,030104 developmental biology ,medicine.anatomical_structure ,Enzyme ,Biochemistry ,chemistry ,Dietary Supplements ,Sow ,Gestation ,Female ,Research Article - Abstract
Background Chitosan oligosaccharide (COS) is widely consumed as a functional food due to its multiple health effects, but few studies about COS supplement on placental antioxidant and nutrition transport capacity were reported. Taken pregnant sow as a model, we aimed to investigate the effects of dietary COS supplementation during late gestation on placental amino acids transport and antioxidant defense capacity of sows. From day (d) 85 of gestation to parturition, sixteen pregnant sows were divided into a control group (basal diet without COS supplementation) and a COS group (30 mg COS/kg basal diet). Plasma sample of sow was collected on d 110 of gestation, and placenta tissue was obtained during parturition. Then plasma antioxidant enzyme’s activities, the relative level of oxidant stress related genes, amino acids transport related genes and mTOR pathway molecules in placenta were determined. Results Results showed that maternal dietary supplementation with COS increased (P
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