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Pyrroloquinoline quinone regulates the redox status in vitro and in vivo of weaned pigs via the Nrf2/HO-1 pathway

journal of Animal Science and Biotechnology 2021年第4期12卷 1451-1467页

作者： Caiyun Huang Zijuan Fan Dandan Han lee j.johnston Xi Ma Fenglai Wang State Key Lab of Animal Nutrition College of Animal Science&TechnologyChina Agricultural UniversityBeijing 100193China Swine Nutrition and Production West Central Research and Outreach CenterUniversity of MinnesotaMorrisMNUSA Department of Internal Medicine/Department of Biochemistry University of Texas Southwestern Medical CenterDallasTXUSA

Background:Oxidative stress is a main cause of piglet gut damage and *** quinone(PQQ),is a novel redox cofactor with antioxidant ***,the effect and mechanism that PQQ supplementation decreases oxidative injury in weaned pigs is not ***,the aim of this study is to confirm the effect of PQQ on regulating redox status in weaned pigs and the mechanism for antioxidant function by porcine intestinal epithelial cell line(IPEC-j2)challenged with H_(2)O_(2).Results:Experiment 1,144 Duroc×Landrace×Yorkshire pigs(weaned at 28 d)were allocated to four groups:received a basal diet(control)and diets supplemented with 0.15%,0.30%and 0.45%PQQ,*** d 28,growth performance,diarrhea incidence and redox factors were *** 2,IPEC-j2 were treated with or without PQQ in the presence or absence of H_(2)O_(2)for indicated time *** 3,IPEC-j2 were transfected with or without Nrf2 siRNA,then treated according to Experiment *** cell viability,redox factors,protein of tight junctions and Nrf2 pathway were *** vivo,PQQ supplementation demonstrated dose-related improvements in average daily gain,and gain to feed ratio(Linear Pjejunum,and increased concentration of SOD in liver;0.3%PQQ supplementation decreased ileal and liver MDA concentration;and 0.15%PQQ supplementation decreased ileal MDA concentration(Pjunction proteins expression including ZO-1,ZO-2,Occludin and Claudin-1;and decreased ROS concentration and level of Caspase-3(P<0.05);as well as upregulated the ratio of Bcl-2 to Bax and protein expression of nuclear Nrf2,***,Nrf2 knockdown by transfection with Nrf2 siRNA largely abrogated the positive effects of PQQ pretreatment on H_(2)O_

关键词： H_(2)O_(2) IPEC-j2 Nrf2 Oxidative stress Pyrroloquinoline quinone Weaned pig

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A systematic review and meta-analysis of dietary fat effects on reproductive performance of sows and growth performance of piglets

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journal of Animal Science and Biotechnology 2022年第3期13卷 662-681页

作者： Lixue Wang Shuai Zhang lee j.johnston Crystal L.Levesque jingdong Yin Bing Dong State Key Laboratory of Animal Nutrition College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China West Central Research and Outreach Center University of MinnesotaMorrisMN 56267USA Department of Animal Science College of Agriculture and Biological SciencesSouth Dakota State UniversityBrookingsSD 57007USA

Effects of added fat in sow diets on the sows’reproductive performance and offspring growth performance are influenced by multiple factors such as genetics,nutrition,parity,ambient temperatures,and farm *** studies cannot cover all these *** the view to address this challenge,we searched all studies that were published from 1986 to 2020,and performed a systematic review and meta-analysis on the fat *** total,19 papers were collected and *** supplementation in sow diets during late gestation and lactation decreased average daily feed intake(ADFI,P<0.05)and tended to increase average daily energy intake(ADEI,P=0.11).It had no impact on litter weights at birth(P=0.40)or weaning(P=0.46).It increased total numbers of piglets at birth(P=0.07),but had no effect on liveborn per litter(P=0.90)or survival rate(P=0.48)of piglets to *** supplementation had no significant effect on sow body weight loss(P=0.67)or backfat thickness changes(P=0.66),but sows fed diets with added fat had increased milk fat concentration(P=0.03)and shorter wean to estrus intervals(WEI,P=0.01).In specific circumstances,fat supplementation tended to improve growth performance of piglets with low litter weights at birth(P=0.14),or when the sows lost large amounts of body weight during lactation(P=0.11).The level of supplemented fat was 10%and higher would decrease liveborn per litter at neutral temperature(P=0.10).The meta-analysis revealed that fat supplementation to sows diet during late gestation and lactation can be beneficial for sow reproductive performance and litter growth performance.

关键词： Diets Fat Growth performance Piglets Reproductive performance Sows

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Addition of tert-butylhydroquinone(TBHQ)to maize oil reduces lipid oxidation but does not prevent reductions in serum vitamin E in nursery pigs

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journal of Animal Science and Biotechnology 2019年第4期10卷 958-968页

作者： Yuan T.Hung Andrea R.Hanson Pedro E.Urriola lee j.johnston Brian j.Kerr Gerald C.Shurson Department of Animal Science University of Minnesota1988 Fitch Ave.St.PaulMN 55108USA Professional Swine Management LLCCarthageIL 62321USA USDA-ARS National Laboratory for Agriculture and the Environment AmesIA 50011USA West Central Research and Outreach Center University of MinnesotaMorrisMN 56267USA

Background: Maize oil is abundantly used in foods and feeds and is highly susceptible to oxidation. Consequently,commercially available antioxidants should be evaluated for effectiveness against lipid oxidation in swine diets. Our study was conducted to evaluate growth performance of nursery pigs fed oxidized maize oil and to determine effects of using antioxidants on oxidative status in a 2 × 2 factorial design. Two hundred eight weaned pigs were blocked by initial BW into 13 blocks, resulting in 4 pigs per pen and 13 pens per treatment. Dietary treatments included 6% unoxidized or oxidized maize oil, and 0 or 60 mg/kg of tert-butylhydroquinone(TBHQ), which was added after lipid oxidation. Data for growth performance were collected from 5 time periods of a two-phase feeding program(Phase 1 = d 0 to 12 and Phase 2 = d 13 to 34). Serum and liver samples were collected from one pig per pen, which had initial BW closest to average BW to determine oxidative status on d ***: Oxidized maize oil was heated for 12 h at 185 °C with 12 L/min of air, yielding a peroxide value(PV) of 5.98 m Eq O2/kg and TBARS of 0.11 mg MDA eq/g. Addition of TBHQ to diets containing oxidized maize oil decreased PV by 37% and increased the oil stability index by 69%. Final BW, ADG, ADFI, and G:F of pigs were not different among the four dietary treatments. However, pigs fed oxidized maize oil tended(P < 0.08) to increase hepatosomatic index by 5% compared with those fed unoxidized oil, and this was not affected by adding *** serum vitamin E concentration of pigs fed oxidized maize oil was less(P < 0.03) than pigs fed unoxidized oil,but this reduction was not reversed by adding TBHQ. Finally, the serum and liver selenium concentration were not different among the ***: The addition of TBHQ did not affect growth performance and vitamin E status in pigs fed moderately oxidized maize oil, but TBHQ reduced lipid oxidation, enhanced the oil stability, and appeared to redu

关键词： Growth performance Lipid oxidation Maize oil Nursery pigs TBHQ Vitamin E

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母猪分娩的管理

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国外畜牧学（猪与禽） 2002年第4期22卷 31-33页

作者：吴昊杰 lee j.johnston 美国明尼苏达大学

从临产到仔猪断奶 ,是养猪业中最为劳动密集的生产阶段之一。本文根据最近在美国全国猪肉生产者协会支持下制订的分娩管理培训课程。

关键词：母猪分娩管理助产采食量

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Pyrroloquinoline quinone regulates the redox status in vitro and in vivo of weaned pigs via the Nrf2/HO-1 pathway

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journal of Animal Science and Biotechnology 2021年第4期

作者： Caiyun Huang Zijuan Fan Dandan Han lee j.johnston Xi Ma Fenglai Wang

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A systematic review and meta-analysis of dietary fat effects on reproductive performance of sows and growth performance of piglets

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journal of Animal Science and Biotechnology 2022年第3期

作者： Lixue Wang Shuai Zhang lee j.johnston Crystal L.Levesque jingdong Yin Bing Dong

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Addition of tert-butylhydroquinone (TBHQ)to maize oil reduces lipid oxidation but does not prevent reductions in serum vitamin E in nursery pigs

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journal of Animal Science and Biotechnology 2019年第4期

作者： Yuan T.Hung Andrea R.Hanson Pedro E.Urriola lee j.johnston Brian j.Kerr Gerald C.Shurson Department of Animal Science，University of Minnesota Professional Swine Management，LLC West Central Research and Outreach Center，University of Minnesota USDA-ARS National Laboratory for Agriculture and the Environment

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Generation of brain vascular heterogeneity:recent advances from the perspective of angiogenesis

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Neural Regeneration Research 2025年第7期20卷 2013-2014页

作者： Nathanael j.lee Ryota L.Matsuoka Department of Neurosciences Lerner Research InstituteCleveland ClinicClevelandOHUSA Department of Molecular Medicine Cleveland Clinic Lerner College of MedicineCase Western Reserve UniversityClevelandOHUSA

Heterogeneous proper t i es of vascular endothelial cells in the brain:The brain displays large energy dynamics and consumption,and this high level of metabolic demands is fulfilled by a continuous supply of glucose and oxygen through its vascular *** vasculature consists of highly divergent blood vessel branches,giving rise to a dense network of capillaries that supply blood to all cells across the *** elaborated vascular network is thought to develop via angiogenesis,a process in which new blood vessels grow from pre-existing *** capillaries exhibit organotypic features distinct from other tissues and are formed primarily by two major endothelial cell(EC)types:those that form the semi-permeable blood-brain barrier(BBB)and those that develop highly permeable pores known as fenestrae(Matsuoka et al.,2022).The structural and functional differences between BBB and fenestrated vascular ECs represent a fundamental feature of brain vasculature and form the foundation for both brain function and homeostasis.

关键词： angiogenesis homeostasis network

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Neuroprotection by resveratrol-glucuronide and quercetin-glucuronide via binding to polyphenol-and glycosaminoglycan-binding sites in the laminin receptor

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Neural Regeneration Research 2025年第3期20卷 819-820页

作者： Rayudu Gopalakrishna jennifer Aguilar Emily lee William j.Mack Department of Integrative Anatomical Sciences Keck School of MedicineUniversity of Southern CaliforniaLos AngelesCAUSA Department of Neurological Surgery Keck School of MedicineUniversity of Southern CaliforniaLos AngelesCAUSA

The dietary polyphenolic compounds resveratrol and quercetin prevent neurodegenerative diseases in experimental models;however, they reach the brain only in nanomolar concentrations in the glucuronidated and sulfated ... 详细信息

关键词： resveratrol molar dated

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Effects of Reduced Nocturnal Temperature on Performance and Behavior of Nursery Pigs

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journal of Integrative Agriculture 2012年第9期11卷 1509-1516页

作者： lee j.johnston West Central Research and Outreach Center University of MinnesotaMorris MN 56267 USA

Previous studies suggested that pigs prefer lower environmental temperatures during nighttime compared to daytime. So reducing nocturnal temperature in nursery barns may not jeopardize performance or welfare of pigs, but can save energy for heating the barn. A study was conducted to investigate growth performance and behavioral response of nursery pigs to reduced nocturnal temperature. This study was conducted in four replicates, each utilizing 270 newly weaned pigs and lasting for 5 wk. Temperature setpoint in the control room （CON） was started at 30℃ and decreased by 2℃ per week. In the treatment room （RNT）, temperature setpoint was maintained same as in CON between 7：00 h and 19：00 h, and reduced by 8~C between 19：00 h and 7：00 h starting from d 5. Growth performance （15 pens/room, 9 pigs/pen, BW=（6.3±0.61） kg） was monitored for 5 wk, and behaviors in 6 pens in each room were video-recorded for 24 h 3 d after being exposed to the experimental temperature. Instantaneous scan sampling was performed to determine time budgets for standing, sitting, eating, drinking, belly nosing, three postures of lying, and huddling. Two focal pigs were continuously viewed to record duration and occurrence of eating and drinking. Reduced nocturnal temperature did not affect the growth performance of the pigs, time spent standing, sitting, total lying and eating or duration and frequencies of eating and drinking （all P〉0.10）. However, RNT increased time spent lying sternal （83 vs. 72%, P〈0.001） and number of pigs that were huddling （70 vs. 50% of lying pigs, P〈0.001）, and decreased time spent lying laterally （0.8 vs. 4.6%, P〈0.001）, lying half laterally （5.3 vs. 11.0%, P〈0.001）, and belly nosing （0.9 vs. 1.7%, P=0.01） during nighttime. These results indicate that nursery pigs adopted the posture of lying sternal and huddled together to reduce heat loss from their body surface to maintain thermal balance and growth performance in RNT. Such mild reduction in nocturnal temperature in th

关键词： reduced nocturnal temperature behavior growth performance pigs

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