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Curcumin attenuates ochratoxin A and hypoxia co‑induced liver injury in grass carp(Ctenopharyngodon idella)by dual targeting endoplasmic reticulum stress and apoptosis via reducing ROS content

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Journal of Animal Science and Biotechnology 2025年第1期16卷 408-423页

作者： Liangqin Wu Piao Zhao Pei Wu Weidan Jiang Yang Liu Hongmei Ren Xiaowan Jin Xiaoqiu Zhou Lin Feng Animal Nutrition Institute Sichuan Agricultural UniversityChengdu 611130China fish Nutrition and Safety Production University Key laboratory of Sichuan Province Sichuan Agricultural UniversityChengdu 611130China Key laboratory of Animal Disease-Resistance Nutrition Ministry of EducationMinistry of Agriculture and Rural AffairsKey Laboratory of Sichuan ProvinceChengduSichuan 611130China

Background Ochratoxin A(OTA)is a toxin widely found in aquafeed ingredients,and hypoxia is a common prob-lem in fish *** practice,aquatic animals tend to be more sensitive to hypoxia while feeds are contaminated with OTA,but no studies exist in this *** research investigated the multiple biotoxicities of OTA and hypoxia combined on the liver of grass carp and explored the mitigating effect of curcumin(CUR).Methods A total of 720 healthy juvenile grass carp(11.06±0.05 g)were selected and assigned randomly to 4 experi-mental groups:control group(without OTA and CUR),1.2 mg/kg OTA group,400 mg/kg CUR group,and 1.2 mg/kg OTA+400 mg/kg CUR group with three replicates each for 60 ***,32 fish were selected,divided into nor-moxia(18 fish)and hypoxia(18 fish)groups,and subjected to hypoxia stress for 96 *** CUR can attenuate histopathological damage caused by coming to OTA and hypoxia by reducing vacu-olation and nuclear *** alleviation of this damage was associated with the attenuation of apoptosis in the mitochondrial pathway by decreasing the expression of the pro-apoptotic proteins Caspase 3,8,9,Bax,and Apaf1 while increasing the expression of the anti-apoptotic protein Bcl-2,and attenuation of endoplasmic reticulum stress(ERS)by reducing Grp78 expression and chop *** may be attributed to the fact that the addi-tion of CUR increased the levels of catalase(CAT)and glutathione reductase(GSH),increased antioxidant capacity,and ensured the proper functioning of respiratory chain complexes I and II,which in turn reduced the high produc-tion of reactive oxygen species(ROS),thus alleviating apoptosis and *** In conclusion,our data demonstrate the effectiveness of CUR in attenuating liver injury caused by the combination of OTA and *** study confirms the feasibility and efficacy of adding natural products to mitigate toxic damage to aquatic animals.

关键词： Apoptosis Curcumin Endoplasmic reticulum stress Grass carp Hypoxia Ochratoxin A Oxidative damage

Transposable elements shape the landscape of heterozygous structural variation in a bird genome

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Zoological Research 2025年第01期 75-86页

作者： Bo-Ping Li Na Kang Zao-Xu Xu Hao-Ran Luo Shi-Yu Fan Xiao-Han Ao Xing Li Ya-Peng Han Xiao-Bin Ou Luo-Hao Xu Gansu Key laboratory of Protection and Utilization for Biological Resources and Ecological Restoration in Longdong Longdong University Integrative Science Center of Germplasm Creation in Western China (Chongqing) Science City MOE Key Laboratory of Freshwater Fish Reproduction and Development School of Life Sciences Southwest University College of Medicine Longdong University Key laboratory of Ministry of Education for the Coastal and Wetland Ecosystems College of the Environment and EcologyXiamen University

Avian genomes exhibit compact organization and remarkable chromosomal stability. However, the extent and mechanisms by which structural variation in avian genomes differ from those in other vertebrate lineages are poorly explored. This study generated a diploid genome assembly for the golden pheasant(Chrysolophus pictus),a species distinguished by the vibrant plumage of *** haploid genome assembly included complete chromosomalmodels,incorporatingall microchromosomes. Analysis revealed extensive tandem amplification of immune-related genes across the smallest microchromosomes(dot chromosomes), with an average copy number of 54. Structural variation between the haploid genomes was primarily shaped by large insertions and deletions(indels), with minimal contributions from inversions or duplications. Approximately 28% of these large indels were associated with recent insertions of transposable elements, despite their typically low activity in bird genomes. Evidence for significant effects of transposable elements on gene expression was *** strata on the sex chromosomes were identified, along with a drastic rearrangement of the W chromosome. These analyses of the high-quality diploid genome of the golden pheasant provide valuable insights into the evolutionary patterns of structural variation in avian genomes.

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Supplementation of amylase combined with glucoamylase or protease changes intestinal microbiota diversity and benefits for broilers fed a diet of newly harvested corn

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Journal of Animal Science and Biotechnology 2018年第2期9卷 467-479页

作者： Dafei Yin Xiaonan Yin Xingyu Wang Zhao Lei Maofei Wang Yuming Guo Samuel E.Aggrey Wei Nie Jianmin Yuan State key laboratory of Animal Nutrition College of Animal Science and TechnologyChina Agricultural UniversityBeijingChina nutrigenomics laboratory Department of Poultry ScienceUniversity of GeorgiaAthensGAUSA

Background: The effect of amylases combined with exogenous carbohydrase and protease in a newly harvested corn diet on starch digestibility, intestine health and cecal microbiota was investigated in broiler ***: Two hunderd and eighty-eight 5-day-old female chickens were randomly divided into six treatments: a newly harvested corn-soybean meal diet(control); control supplemented with 1,500 U/g α-amylase(Enzyme A);Enzyme A + 300 U/g amylopectase + 20,000 U/g glucoamylase(Enzyme B); Enzyme B + protease 10,000 U/g(Enzyme C); Enzyme C + xylanase 15,000 U/g(Enzyme D); and Enzyme D + cellulase 200 U/g + pectinase 1,000 U/g(Enzyme E). Growth performance, starch digestibility, digestive organ morphology, and intestinal microbiota were evaluated in the birds at 16 and 23 d of ***: Compared with the control diet, supplementation with Enzyme A significantly decreased ileum lesion scoring at 16 d of age(P < 0.05); supplementation with Enzyme B or Enzyme C showed positive effects on ileal amylopectin and total starch digestibility(P < 0.05); Broilers fed with a diet supplemented with Enzyme D had a tendency to decrease body weight gain at 23 d. Enzyme E supplementation improved lesion scoring of jejunum and ileum at 16 d(P < 0.05), and increased ileal amylopectin or total starch digestibility at 23 d(P < 0.05).Supplementation of enzymes changed cecal microbiota diversity. High numbers of Campylobacter, Helicobacter and Butyricicoccus, Anaerostipes and Bifidobacterium, Sutterella and Odoribacter were the main genera detected in supplementations with Enzymes B, C, D, and E ***: Supplementation with amylase combined with glucoamylase or protease showed a beneficial effect on starch digestibility and intestinal microbiota diversity, and increased growth of broilers fed with newly harvested corn.

关键词： Amylase Broiler Glucoamylase Microbiota diversity Newly harvested corn Protease

A high maneuvering motion strategy and stable control method for tandem twin-rotor aerial-aquatic vehicles near the water surface

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Defence Technology(防务技术) 2025年第2期44卷 206-220页

作者： Sifan Wu Maosen Shao Sihuan Wu Zhilin He Hui Wang Jinxiu Zhang Yuan Liu School of Aeronautics and Astronautics Sun Yat-sen UniversityShenzhen518107China Southern Marine Science and Engineering Guangdong laboratory Zhuhai519000China

The maneuverability and stealth of aerial-aquatic vehicles(AAVs)is of significant importance for future integrated air-sea combat *** improve the maneuverability and stealth of AAVs near the water surface,this paper proposed a high-maneuverability skipping motion strategy for the tandem twin-rotor AAV,inspired by the motion behavior of the flying fish to avoid aquatic and aerial predators near the water *** novel tandem twin-rotor AAV was employed as the research subject and a strategybased ADRC control method for validation,comparing it with a strategy-based PID control *** results indicate that both control methods enable the designed AAV to achieve high stealth and maneuverability near the water surface with robust control *** strategy-based ADRC control method exhibits a certain advantage in controlling height,pitch angle,and reducing impact *** motion strategy will offer an inspiring approach for the practical application of AAVs to some extent.

关键词： Tandem twin-rotor Aerial-aquatic vehicle High maneuvering motion strategy Active disturbance rejection controller Skipping on water surface

A regularization method for delivering the fourth-order derivative of experimental data and its applications in fluid-structure interactions

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Science China Technological Sciences 2025年第3期68卷 363-380页

作者： Fan DUAN Jin-Jun WANG Fluid Mechanics Key laboratory of Education Ministry Beijing University of Aeronautics and Astronautics

In the experimental investigation of fluid-structure interactions regarding the undulatory motion like flag flapping or fish swimming, solving the force distribution on the flexible body stands as an indispensable endeavor to gain insights into the underlying dynamic mechanisms. However, the solving process entails high-order numerical derivatives of experimental data, which poses a formidable challenge for experimental studies on fluid-structure interactions, given that the measurement noise inherent in experimental data renders the problem ill-posed. The commonly practiced regularization methods for numerical derivatives are feeble to tackle the fourth-order derivative associated with the bending force; those methods, in particular, require predetermined parameters about the unknown noise. We introduce here an empirical regularization method founded upon the kernel-term modification in the frequency domain, notably capable of determining the fourth derivative of experimental *** leveraging the potentials of the iterative operations, our method enables the reliable estimation of an approximately optimal regularization parameter, all without reliance on any a priori knowledge about the noise characteristics. To demonstrate the reliability, robustness, and accuracy of the method, we perform rigorous numerical assessments using different data models that are infused with noise varying several orders of magnitude. Additionally, practical application of this method is achieved in the experiment on a flexible film flapping in the gusty flow, where the spatiotemporal distribution of the bending force density on the film is calculated by integrating this method with a linear reconstruction.

关键词： high-order numerical derivative regularization film fluid-structure interactions bending force

Length-weight relationships for six freshwater fish species in Iran

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Chinese Journal of Oceanology and Limnology 2009年第1期27卷 61-62页

作者： M. S. HEYDARNEJAD fish and fisheries laboratory Zoology Dept. Shahrekord University

The aim of this study is to report the length-weight relationship parameters （a and b） for some economically important fish species from Iranian freshwaters. The length-weight relationships （LWR） are calculated for six freshwater fish species collected during 2006 and 2007 in Iran. The values of the exponent b in the LWR （W=aL^b） vary between 2.985 and 3.543. The LWR with high correlation coefficient （r^2） is significant for all the species. These parameters axe of great importance to evaluate the relative condition of populations, biology, species management and their fisheries and stock assessment. The application of the length-weight relationships presented here should be limited to the observed length ranges.

关键词： length-weight relationships (LWR) freshwater fishes in Iran isometric and allometric growths

Floc meal as potential substitute for soybean meal in tilapia diets under biofloc system conditions

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Journal of Oceanology and Limnology 2019年第1期37卷 313-320页

作者： Rania S. MABROKE Osama M. EL-HUSSEINY Abd El-Naem F. A. ZIDAN Al-Azab TAHOUN Ashraf SULOMA fish Nutrition laboratory (FNL) Animal Production Department Faculty of Agriculture Cairo University Aquaculture Department Faculty of Fish ResourcesSuez University

This study was conducted to evaluate the ef fect of replacing soybean meal(SBM) by low protein ?oc meal(LPFM; 24% CP) in tilapia diets on growth performance, feed utilization and ?sh chemical composition. Three isonitrogenous and isocaloric diets were formulated; control diet(C; without LPFM),FM 25(25% of SBM protein was substituted by LPFM) and FM 50(50% of SBM protein was substituted by LPFM). Nine 55 l circular plastic tanks were stocked by 12 ?sh to form three experimental *** dif ferences in tilapia performance were observed between the control and the FM 25 diet. Chemical composition of ?sh did not dif fer signi?cantly among treatments except for protein and selenium contents where the highest values were recorded in the control treatment. The highest mineral content was recorded in ?oc collected from the control tanks, while calcium content showed its highest value in ?oc collected from FM 50 e ? uent. These data indicate that replacing soybean meal with LPFM up to 25%, had no negative ef fect on growth performance and potentially may improve the system sustainability. Meanwhile, the adverse ef fect of more inclusion of LPFM in tilapia diet may be attributed to the higher content of ash. In other word,minerals seem to cause more energy utilization in ?sh fed ?oc meal since it is needed to maintain osmotic homeostasis.

关键词： microbial flocs alternative protein sources tilapia diet sustainability

Visual detection of tropomyosin,a major shrimp allergenic protein using gold nanoparticles(AuNPs)-assisted colorimetric aptasensor

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Marine Life Science & Technology 2021年第3期3卷 382-394页

作者： Tushar Ramesh Pavase Hong Lin Maqsood Ahmed Soomro Hongwei Zheng Xiaxia Li Kexin Wang Zhenxing Li Food Safety laboratory Department of Food Science and EngineeringCollege of Food Science and EngineeringOcean University of ChinaQingdao266003China fish Molecular immunology laboratory College of Marine Life SciencesOcean University of ChinaQingdao266003China

A gold nanoparticle-based label-free colorimetric assay was developed to detect the shrimp allergenic protein tropomyosin(TM),an important biomarker responsible for severe clinical reactivity to *** a gold nanoparticles(AuNPs)-tropomyosin-binding aptamer(TMBA)complex,the aptamer adsorbs onto the surface of AuNPs and dissociates in the presence of *** addition,AuNPs tend to aggregate in the presence of ionic salt,revealing a color change(i.e.,wine-red to purple/blue)with a shift in the maximum absorption peak from 520 *** the presence of specific binding TM,the aptamer folds into a tertiary structure where it more efficiently stabilizes AuNPs toward the salt-induced aggregation with a hypsochromic shift in the absorption spectra compared to the stabilized AuNPs by aptamer *** on the aggregation and sensitive spectral transformation principle,the AuNPs-based colorimetric aptasensor was successfully applied to detect TM with a range of 10-200 nmol/L and a low detection limit of 40 nmol/L in water *** reliability,selectivity,and sensitivity of the aptasensor was then tested with food samples spiked with *** observed detection limit was as low as 70 nmol/L in shrimp,90 nmol/L in tofu,and 80 nmol/L in eggs,*** anticipate the proposed AuNPs-based colorimetric aptasensor assay possesses a high potential for the easy and efficient visual colorimetric detection of TM.

关键词： Gold nanoparticles(AuNPs) Aptamer Aggregation Colorimetric assay Shellfish allergenic protein Shrimp tropomyosin(TM)

Ferulic acid alleviates long-term avermectin-induced damage to the spleen of carp and restores its inflammatory response and oxidative balance

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Journal of Environmental Sciences 2025年第5期151卷 616-626页

作者： Hanyu Wang Shenye Feng Enzhuang Pan Xiaomeng Ji Mengyuan Zhou Shuai Zhang Baoshi Xu Huimiao Feng Jilei Yin Zibo Dong Jiangsu Key laboratory of Marine Bioresources and Environment Co-Innovation Center of Jiangsu Marine Bio-industry TechnologyJiangsu Marine Pharmaceutical Resources Development Engineering Research CenterJiangsu Key Laboratory of Marine Pharmaceutical Compound ScreeningCollege of PharmacyJiangsu Ocean UniversityLianyungang 222005China Department of Traditional Chinese Medicine Jiangsu Union Technical Institute Lianyungang Branch institute of Traditional Chinese MedicineLianyungang 222006China

Extensive use of avermectin(AVM)in agriculture can seriously contaminate fish in *** acid(FA)is a strong antioxidant sourced from plants and is widely applied in food and medicine,but its protective function on the immunological damage caused by AVM is still *** this study,carp were chronically exposed to(1/1096 hr LC_(50))AVM for 30 day(s),with a dietary supplement of FA(400 mg/kg)to assess its effects on carp *** experimental groups(n=10)included:control,AVM-exposed(2.404μg/L),FA+AVM co-treated,and FA ***-term AVM exposure altered spleen tissue,reducing serum complement C3(pfish feed for aquaculture.

关键词： Avermectin Ferulic acid Oxidative stress Inflammation response