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Copper homeostasis and neurodegenerative diseases

Neural Regeneration Research 2025年第11期20卷 3124-3143页

作者： Yuanyuan Wang Daidi Li Kaifei Xu Guoqing Wang Feng Zhang International Research laboratory of Ethnomedicine of ministry of education Key Laboratory of Basic Pharmacology of Ministry of EducationLaboratory Animal Center and Key Laboratory of Basic Pharmacology of Guizhou ProvinceZunyi Medical UniversityZunyiGuizhou ProvinceChina

Copper,one of the most prolific transition metals in the body,is required for normal brain physiological activity and allows various functions to work normally through its range of *** homeostasis is meticulously maintained through a complex network of copper-dependent proteins,including copper transporters(CTR1 and CTR2),the two copper ion transporters the Cu-transporting ATPase 1(ATP7A)and Cu-transporting beta(ATP7B),and the three copper chaperones ATOX1,CCS,and *** in copper homeostasis can lead to either the deficiency or accumulation of copper in brain *** evidence suggests that abnormal copper metabolism or copper binding to various proteins,including ceruloplasmin and metallothionein,is involved in the pathogenesis of neurodegenerative ***,the exact mechanisms underlying these processes are not *** is a potent oxidant that increases reactive oxygen species production and promotes oxidative *** reactive oxygen species levels may further compromise mitochondrial integrity and cause mitochondrial *** oxygen species serve as key signaling molecules in copper-induced neuroinflammation,with elevated levels activating several critical inflammatory ***,copper can bind aberrantly to several neuronal proteins,including alphasynuclein,tau,superoxide dismutase 1,and huntingtin,thereby inducing neurotoxicity and ultimately cell *** study focuses on the latest literature evaluating the role of copper in neurodegenerative diseases,with a particular focus on copper-containing metalloenzymes and copper-binding proteins in the regulation of copper homeostasis and their involvement in neurodegenerative disease *** synthesizing the current findings on the functions of copper in oxidative stress,neuroinflammation,mitochondrial dysfunction,and protein misfolding,we aim to elucidate the mechanisms by which copper contributes to a wide range of heredit

关键词： Alzheimer's disease amyotrophic lateral sclerosis disease copper homeostasis copper toxicity Huntington's disease Menkes'disease multiple sclerosis neurodegenerative disease Parkinson's disease Wilson's disease

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Effect of dietary supplementation with mulberry(Morus alba L.) leaves on the growth performance,meat quality and antioxidative capacity of finishing pigs

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Journal of Integrative Agriculture 2019年第1期18卷 143-151页

作者： ZENG Zhu JIANG Jun-jie YU Jie MAO Xiang-bing YU Bing CHEN Dai-wen key laboratory for animal disease-resistant nutrition Ministry of Education/Institute of Animal NutritionSichuan Agricultural University

The present study was conducted to evaluate the effect of dietary mulberry(Morus alba L.) leaves powder(MLP) supplementation on meat quality of finishing pigs.A total of 40 Duroc×Landrace×Yorkshire pigs(initial body weight of(40.5±0.63) kg) were randomly allotted into two treatments,fed either with control diet or 15% MLP diet for 85 *** results showed that MLP diet decreased(P≤0.05) average daily gain(ADG) and increased(P<0.05) feed/gain ratio(F/G) in the finishing and whole *** diet also decreased(P<0.05) carcass weight,dressing percentage,last rib and average backfat ***,MLP diet increased(P<0.05) intramuscular fat(IMF) content,decreased(P<0.05) shear force,cooking loss and drip *** addition,MLP diet increased(P<0.05) total antioxidative capacity,glutathione peroxidase and tended(P<0.10) to increase total superoxide dismutase in *** longissimus thoracis,myosin heavy chain(MyHC) I and IIa mRNA levels were increased(P≤0.05) for MLP *** conclusion,15% MLP supplementation reduced the growth performance and carcass traits,but improved meat quality of finishing pigs possibly through the change of myofiber characteristics,enhancement of antioxidative capacity and increase of IMF.

关键词： mulberry leaves powder meat quality myofibers antioxidation pigs

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Infusion of short chain fatty acids in the ileum improves the carcass traits,meat quality and lipid metabolism of growing pigs

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animal nutrition 2021年第1期7卷 94-100页

作者： Anran Jiao Hui Diao Bing Yu Jun He Jie Yu Ping Zheng Yuheng Luo Junqiu Luo Quyuan Wang Huifen Wang Xiangbing Mao Daiwen Chen Institute of animal nutrition Sichuan Agricultural UniversityKey Laboratory for Animal Disease-Resistance Nutrition of China Ministry of EducationKey Laboratory of Animal Disease-resistant Nutrition and Feed of China Ministry of Agriculture and Rural AffairsKey Laboratory of Animal Disease-resistant Nutrition of Sichuan ProvinceYa'an625014China

Short chain fatty acids(SCFA)are the main products of indigestible carbohydrates undergoing bacterial fermentation in the hindgut,which are related to some physiological *** study was designed to investigate the effects of SCFA infusion by ileum on the carcass traits,meat quality and lipid meta-bolism of growing *** a 28-day study,24 growing barrows fitted with a T-cannula in distal ileum were divided into 4 treatments:1)Control,2)antibiotics(AB),3)AB+300 mL of SCFA1 solution(ABS1),4)AB+300 mL of SCFA2 solution(ABS2).The concentrations of acetate,propionate and butyrate in SCFA1 solution were respectively 61.84,18.62 and 12.55 mmol/L,and in SCFA2 were respectively 40.08,15.41 and 9.78 mmol/L The results showed that the SCFA infusion increased the average daily feed intake and average daily gain of pigs(P<0.05).Meanwhile,the SCFA treatments increased longissimus dorsi area(P<0.05)and carcass weight(P=0.058),decreased the drip loss of longissimus dorsi(P=0.059),and reduced serum concentrations of triglyceride,total cholesterol and urea nitrogen(P<0.05).Besides,the SCFA administration inhibited the mRNA expressions of fatty acid synthase(FAS)and acetyl-CoA carboxylase in longissimus dorsi(P<0.05),the mRNA expression of FAS in the liver(P<0.05),and the mRNA expression of hormone-sensitive lipase in abdominal fat(P<0.05).Short chain fatty acid infusion also enhanced the mRNA expression of carnitine palmitoyltransferase-1αin the liver(P<0.05),the mRNA expressions of peroxisome proliferator activated receptor gamma and lipoprotein lipase in abdominal fat(P<0.05),and the mRNA expressions of free fatty acid receptor 2,glucose-6-phosphatase and phosphoenolpyruvate carboxykinase 1 in the colon(P<0.05).These results suggested that SCFA administration in the ileum could improve the carcass traits and meat quality of growing pigs,which was possibly due to the fact that SCFA modulated lipid metabolism.

关键词： Short chain fatty acid Carcass trait Meat quality Lipid metabolism Growing pig

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Next-generation probiotic candidates targeting intestinal health in weaned piglets: Both live and heat-killed Akkermansia muciniphila prevent pathological changes induced by enterotoxigenic Escherichia coli in the gut

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animal nutrition 2024年第2期17卷 110-122页

作者： Cong Lan Hua Li Yuqing Shen Yang Liu Aimin Wu Jun He Jingyi Cai Gang Tian Xiangbing Mao Zhiqing Huang Bing Yu Ping Zheng Jie Yu Junqiu Luo Hui Yan Yuheng Luo key laboratory for animal disease-Resistance nutrition of ministry of education of China Key Laboratory for Animal Disease-Resistance Nutrition and Feed of Ministry of Agriculture of ChinaKey Laboratory of Animal Disease-Resistant Nutrition of Sichuan ProvinceEngineering Research Center of Animal Disease-Resistance Nutrition Biotechnology of Ministry of Education of ChinaAnimal Nutrition InstituteSichuan Agricultural University

The use of next-generation probiotics （NGP） in pigs for combating diseases has been subject to limited *** we explored the potential of a well-known NGP candidate Akkermansia muciniphila targeting pig gut *** the first screening experiment,we found that the abundance of *** peaked at 14 d old but decreased at weaning （21 d old;P<0.05）,suggesting the weaning period may be an effective window for *** *** that,48 crossbred weaned pigs at 28 d old were randomly assigned to five groups:control （CON）,high/low live *** （HA/LA）,and high/low heatkilled *** （HIA/LIA）.From 1 to 28 d old,the CON group received gastric infusion of anaerobic sterile saline every other day;the HA and LA groups were gavaged every other day with 1×1010CFU/5 m L and 5×10～8CFU/5 mL live ***,respectively;and the HIA and LIA groups were gavaged every other day with 1×1010CFU/5 mL and 5×10～8CFU/5 mL heat-killed ***,*** d 29,pigs in the CON group were randomly and equally divided into two groups,one of which was named the enterotoxigenic Escherichia coli （ETEC） group,and all groups except CON received a 5-d ETEC *** supplementation of *** numerically reduced the diarrhea rate of weaned pigs compared to the pigs that only received the ETEC challenge （P=0.57）,but the LIA group had a higher diarrhea rate than the CON group （P<0.05）.Consistent with this,the supplementation of *** improved the small intestinal morphology and structure,proportion of CD4+T lymphocytes in the blood,as well as the expression of genes related to intestinal barrier and antioxidant indices of pigs with ETEC challenge,especially for the LA group （P<0.05）.Meanwhile,*** supplementation reduced the expression of ETEC virulence factor genes in the ileum and colon of pigs challenged by ETEC （P<0.05）.Therefore,*** may protect the intestinal health of weaned piglets from damage caused by

关键词： Akkermansia muciniphila Weaned piglet Enterotoxigenic Escherichia coli challenge Intestinal health

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Secondary bile acids are associated with body lipid accumulation in obese pigs

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animal nutrition 2024年第3期18卷 246-256页

作者： Yaolian Hu Aimin Wu Hui Yan Junning Pu Junqiu Luo Ping Zheng Yuheng Luo Jie Yu Jun He Bing Yu Daiwen Chen key laboratory of animal disease-resistant nutrition Ministry of EducationAnimal Nutrition InstituteSichuan Agricultural UniversityYa'an 625014China

The aim of this study was to investigate the reasons for the differences in lipid accumulation between lean and obese *** bile acids with varying levels within two types of pigs were found and then in vitro experiments were conducted to identify whether these bile acids can directly affect lipid *** pigs,including seven lean and seven obese pigs with body weights of approximately 80 kg,were fed the same diet at an amount approximately equivalent to 3%of their respective body weights daily for 42 *** vitro,3T3-L1 preadipocytes were cultured in medium with high glucose levels and were differentiated into mature adipocytes using differentiation ***,bile acids were added to mature adipocytes for 4 *** results showed that there was a difference in body lipids levels and gut microbiota composition between obese and lean pigs(P<0.05).According to the results of gut microbial function prediction,the bile acid biosynthesis in colonic digesta of obese pigs were different from that in lean ***-five bile acids were further screened by metabolomics,of which 4 were upregulated(P<0.05)and 2 were downregulated(P<0.05)in obese pigs compared to lean *** results of the correlation analysis demonstrated that chenodeoxycholic acid-3-β-D-glucuronide(CDCA-3Gln)andω-muricholic acid(ω-MCA)had a negative correlation with abdominal fat weight and abdominal fat rate,while isoallolithocholic acid(IALCA)was positively associated with crude fat in the liver and abdominal fat *** was a positive correlation between loin muscle area and CDCA-3Gln andω-MCA(P<0.05),however,IALCA and 3-oxodeoxycholic acid(3-oxo-DCA)were negatively associated with loin eye muscle area(P<0.05).Isoallolithocholic acid increased the gene expression of peroxisome proliferator-activated receptor gamma(PPARG)and the number of lipid droplets(P<0.05),promoting the lipid storage when IALCA was added to 3T3-L1 mature adipocytes in *** conclusion,the concentration of bile ac

关键词： Lean or obese pig Lipid accumulation Bile acid profile Gut microbiota

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Lysine deficiency impaired growth performance and immune response and aggravated inflammatory response of the skin,spleen and head kidney in grown-up grass carp (Ctenopharyngodon idella)

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animal nutrition 2021年第2期7卷 556-568页

作者： Yangyang Hu Lin Feng Weidan Jiang Pei Wu Yang Liu Shengyao Kuang Ling Tang Xiaoqiu Zhou animal nutrition Institute Sichuan Agricultural UniversityChengduChina Fish nutrition and Safety Production University Key Laboratory of Sichuan ProvinceSichuan Agricultural UniversityChengduChina key laboratory of animal disease-resistant nutrition Sichuan ProvinceChina key laboratory of animal disease-resistant nutrition Ministry of EducationChina key laboratory of animal disease-resistant nutrition and Feed Ministry of Agriculture and Rural AffairsChina animal nutrition Institute Sichuan Academy of Animal ScienceChengduChina

This dissertation was primarily focused on the immune response,inflammatory response and molecular mechanisms in the skin,head kidney and spleen of grown-up grass carp(Ctenopharyngodon idella).Six iso-nitrogen diets differing in lysine concentrations(5.6,8.5,11.6,14.4,17.5 and 20.7 g/kg)were fed to 540 grass carp(164.85±0.79 g)for 60 *** that,grass carp were challenged by Aeromonas hydrophila for 6 *** study revealed that lysine deficiency(1)suppressed the growth performa,nce of the fish and decreased their ability to resist skin lesion morbidity,(2)impaired the immune organ s immune response by decreasing the gene expressions of mucin,liver-expressed antimicrobial peptide(LEAP)-2B,β-defensin-1 and LEAP-2A and the production of antibacterial compounds of grown-up grass carp,and(3)aggravated the inflammatory response of immune organs in the fish by increasing the gene expressions of pro-inflammatory cytokines(interferon y2[IFN-γ2],tumor necrosis factorα[TNF-α],interleukin[IL]-15,IL-17D,IL-12p40,IL-6 and IL-8)and down-regulating anti-inflammatory cytokines(IL-11,transforming growth factorβ1[TGF-β1],IL-10 and IL-4/13A),which were tightly correlated with signal transducer and activator of transcription(STAT)1 and STAT3 signaling pathway,*** different phenomenon in the skin,spleen and head kidney of fish may be correlated with the difference in gene *** addition,using quadratic regression analysis of percent weight gain(PWG),skin lesion morbidity,and the lysozyme activities in the spleen and head kidney,the dietary lysine requirements for grown-up grass carp were estimated to be 13.58,13.51,14.56 and 14.18 g/kg,respectively.

关键词： Lysine deficiency Grass carp(Ctenopharyngodon idella) Immune function Head kidney Spleen Skin

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The protective role of prebiotics and probiotics on diarrhea and gut damage in the rotavirus-infected piglets

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Journal of animal Science and Biotechnology 2024年第4期15卷 1424-1448页

作者： Heng Yang Xiangqi Fan Xiangbing Mao Bing Yu Jun He Hui Yan Jianping Wang Institute of animal nutrition Sichuan Agricultural UniversityKey Laboratory for Animal Disease-Resistance Nutrition of China Ministry of EducationKey Laboratory of Animal Disease-Resistant Nutrition and Feed of China Ministry of Agriculture and Rural AffairsKey Laboratory of Animal Disease-Resistant Nutrition of Sichuan ProvinceNo.211Gongpinghuimin RoadWenjiang DistrictChengduSichuan Province 611130People’s Republic of China

Rotavirus is one of the pathogenic causes that induce diarrhea in young animals, especially piglets, worldwide. However, nowadays, there is no specific drug available to treat the disease, and the related vaccines have no obvious efficiency in some countries. Via analyzing the pathogenesis of rotavirus, it inducing diarrhea is mainly due to disturb enteric nervous system, destroy gut mucosal integrity, induce intracellular electrolyte imbalance, and impair gut microbiota and immunity. Many studies have already proved that prebiotics and probiotics can mitigate the damage and diarrhea induced by rotavirus infection in hosts. Based on these, the current review summarizes and discusses the effects and mechanisms of prebiotics and probiotics on rotavirus-induced diarrhea in piglets. This information will highlight the basis for the swine production utilization of prebiotics and probiotics in the prevention or treatment of rotavirus infection in the future.

关键词： Diarrhea Piglet Prebiotics Probiotics Rotavirus

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Dietary pectic oligosaccharide supplementation improves rat reproductive performance via regulating intestinal volatile fatty acids during middle gestation

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animal nutrition 2020年第2期6卷 210-216页

作者： Minghui Liu Xiangbing Mao Daiwen Chen Bing Yu Jun He Ping Zheng Jie Yu Junqiu Luo Yuheng Luo Jianping Wang Quyuan Wang Huifen Wang animal nutrition Institute Sichuan Agricultural UniversityChengdu611130China key laboratory of animal disease-Resistance nutrition Chinese Ministry of EducationChengdu611130China key laboratory of animal disease-resistant nutrition and Feed Chinese Ministry of Agriculture and Rural AffairsChengdu611130China key laboratory of animal disease-resistant nutrition SichuanChengdu611130China

As a kind of green additive,pectic oligosaccharide(POS) may regulate some physiological functions of animals,such as gut health,antioxidant capacity,immunity and lipid *** study aimed to identify whether POS administration can improve maternal reproduction,and to determine the possible metabolism.A total of 48 pregnant Wistar rats randomly allotted into 2 groups,and each group was fed a diet supplemented with 0 or 800 mg/kg of *** oligosaccharide administration increased rat born number(P <0.05),did not affect rat embryo number on d 7 of gestation,but increased rat fetus number on d 14 of gestation(P <0.05).On d 14 of gestation,POS treatment improved Lactobacillus and Bifidobacterium populations and volatile fatty acid concentrations of cecal digesta(P <0.05),hormone(progesterone and nitric oxide) and cytokine(interleukin 2) concentrations of serum(P <0.05),and antioxidant capacity of serum(increased total antioxidant capacity and decreased malondialdehyde) and placenta(increased total superoxide dismutase,decreased malondialdehyde)(P <0.05) in pregnant *** results suggest that POS administration improved rat reproduction via decreasing fetus loss in middle *** was due to the increased volatile fatty acid concentrations in rat gut improving hormone and inflammatory-cytokine productions,and antioxidant capacity.

关键词： Pectic oligosaccharide Rat reproductive performance Volatile fatty acids Hormone and cytokine generations Antioxidant capacity

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Lentinan administration alleviates diarrhea of rotavirus-infected weaned pigs via regulating intestinal immunity

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Journal of animal Science and Biotechnology 2021年第3期12卷 1125-1137页

作者： Xiangqi Fan Haiyan Hu Daiwen Chen Bing Yu Jun He Jie Yu Junqiu Luo Erik Eckhardt Yuheng Luo Jianping Wang Hui Yan Xiangbing Mao key laboratory for animal disease-Resistance nutrition of China ministry of education Key laboratory of Animal Disease-resistant Nutrition and Feed of China Ministry of Agriculture and Rural AffairsKey laboratory of Animal Disease-resistant Nutrition of Sichuan ProvinceInstitute of Animal NutritionSichuan Agricultural UniversityNo.211Gongpinghuimin RoadWenjiang DistrictChengdu 611130Sichuan ProvincePeople’s Republic of China Adisseo SAS Center of Excellence and Research in Nutrition03600 MalicorneFrance

Background:Lentinan(LNT)may regulate many important physiological functions of human and *** study aimed to verify whether LNT administration could relieve diarrhea via improving gut immunity in rotavirus(RV)-challenged weaned ***:Twenty-eight weaned pigs were randomly fed 2 diets containing 0 or 84 mg/kg LNT product for 19 d(n=14).RV infection was executed on d *** extracting polysaccharides from LNT product,its major monosaccharides were ***,LNT polysaccharide was used to administrate RV-infected IPEC-J2 ***:Dietary LNT supplementation supported normal function of piglets even when infected with RV,as reflected by reduced growth performance loss and diarrhea prevalence,and maintained gut immunity(P<0.05).The polysaccharide was isolated from LNT product,which molecular weight was 5303 Da,and major monosaccharides included glucose,arabinose and *** RV-infected IPEC-J2 cells,this polysaccharide significantly increased cell viability(P<0.05),and significantly increased anti-virus immunity via regulating pattern recognition receptors and host defense peptides(P<0.05).Conclusion:Those results suggest that LNT administration increases the piglets’resistance to RV-induced stress,likely by supporting intestinal immunity.

关键词： Gut immunity IPEC-J2 cells Lentinan Rotavirus Weaned pigs

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The effect of dietary tryptophan levels on oxidative stress of liver induced by diquat in weaned piglets

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Journal of animal Science and Biotechnology 2015年第1期6卷 104-110页

作者： Xiangbing Mao Mei Lv Bing Yu Jun He Ping Zheng Jie Yu Quyuan Wang Daiwen Chen animal nutrition Institute Sichuan Agricultural University key laboratory of animal disease-Resistance nutrition Ministry of Education

Oxidative stress can induce abnormal tryptophan metabolism. The present study was mainly conducted to determine the effect of dietary tryptophan levels on oxidative stress in the liver of weaned pigs challenged by diquat. A total of 36 PIC piglets weaned at 21 days of age were randomly allotted to 1 of 3 diets containing dietary tryptophan levels of 0.18, 0.30, and 0A5% for 14 d. On day 8, the piglets were injected intraperitoneally with sterile 0.9% NaCI solution or diquat （10 mg/kg body weight）. During the first 7 d of trial, increasing dietary tryptophan levels enhanced average daily gain （P = 0.09） and average daily feed intake （P = 0.08）, and decreased the feed efficiency （P 〈 0.05） of piglets. The growth performance was decreased by diquat injection （P 〈 0.05）. Diquat injection also decreased the activities of the superoxide dismutase （SOD） and glutathione peroxidase （GPx） in the plasma and liver （P 〈 0.05）, increased plasma malondialdehyde （MDA）（P 〈 0.05） and urea nitrogen （P 〈 0.05） concentrations, and enhanced MDA concentration （P = 0.09） and tryptophan 2,3-dioxygenase （TDO） activity （P = 0.07） in liver of piglets. Increasing dietary tryptophan levels could attenuate the effects of diquat injection on the MDA （P = 0.06） concentration and the activities of SOD （P = 0.09） and GPx （P = 0.05） of the liver, and plasma urea nitrogen （P = 0.06） concentration in the piglet. There was a synergistic role for increasing TDO activity in the liver between dietary tryptophan levels and diquat injection （P 〈 0.05）. These results suggest that increasing dietary tryptophan levels could attenuate the oxidative stress of the liver in weaned piglets intraperitoneally injected with diquat via enhancing the antioxidant capacity.

关键词： Antioxidant capacity Diquat Oxidative stress of livers Tryptophan,Weaned piglets

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