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Sheng L, Wang Z, Song L, Yang X, Ye Y, Sun J, Ji J, Geng S, Ning D, Zhang Y, Sun X. Antimicrobial carbon dots/pectin-based hydrogel for promoting healing processes in multidrug-resistant bacteria-infected wounds. Int J Biol Macromol 2024; 264:130477. [PMID: 38428784 DOI: 10.1016/j.ijbiomac.2024.130477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 02/24/2024] [Accepted: 02/26/2024] [Indexed: 03/03/2024]
Abstract
Multidrug-resistant (MDR) bacterial infections have become a significant threat to global healthcare systems. Here, we developed a highly efficient antimicrobial hydrogel using environmentally friendly garlic carbon dots, pectin, and acrylic acid. The hydrogel had a porous three-dimensional network structure, which endowed it with good mechanical properties and compression recovery performance. The hydrogel could adhere closely to skin tissues and had an equilibrium swelling ratio of 6.21, indicating its potential as a wound dressing. In particular, the bactericidal efficacy following 24-h contact against two MDR bacteria could exceed 99.99 %. When the hydrogel was applied to epidermal wounds infected with methicillin-resistant Staphylococcus aureus (MRSA) on mice, a remarkable healing rate of 93.29 % was observed after 10 days. This was better than the effectiveness of the traditionally used antibiotic kanamycin, which resulted in a healing rate of 70.36 %. In vitro cytotoxicity testing and hemolysis assay demonstrated a high biocompatibility. This was further proved by the in vivo assay where no toxic side effects were observed on the heart, liver, spleen, lung, or kidney of mice. This eco-friendly and easy-to-prepare food-inspired hydrogel provides an idea for the rational use of food and food by-products as a wound dressing to control MDR bacterial infections.
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Affiliation(s)
- Lina Sheng
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu 214122, PR China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, Jiangsu 214200, PR China
| | - Ziyue Wang
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu 214122, PR China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, Jiangsu 214200, PR China
| | - Liyao Song
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu 214122, PR China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, Jiangsu 214200, PR China
| | - Xingxing Yang
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu 214122, PR China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, Jiangsu 214200, PR China
| | - Yongli Ye
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu 214122, PR China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, Jiangsu 214200, PR China
| | - Jiadi Sun
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu 214122, PR China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, Jiangsu 214200, PR China
| | - Jian Ji
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu 214122, PR China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, Jiangsu 214200, PR China
| | - Shuxiang Geng
- Yunnan Academy of Forestry and Grassland, Kunming, Yunnan 650201, PR China
| | - Delu Ning
- Yunnan Academy of Forestry and Grassland, Kunming, Yunnan 650201, PR China
| | - Yinzhi Zhang
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu 214122, PR China; State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, PR China
| | - Xiulan Sun
- School of Food Science and Technology, International Joint Laboratory on Food Safety, Synergetic Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu 214122, PR China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, Jiangsu 214200, PR China.
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Sun F, Shan P, Liu B, Li Y, Wang K, Zhuang Y, Ning D, Li H. Gelatin-based multifunctional composite films integrated with dialdehyde carboxymethyl cellulose and coffee leaf extract for active food packaging. Int J Biol Macromol 2024; 263:130302. [PMID: 38382794 DOI: 10.1016/j.ijbiomac.2024.130302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 02/09/2024] [Accepted: 02/17/2024] [Indexed: 02/23/2024]
Abstract
In this study, dialdehyde carboxymethyl cellulose (DCMC, 10 wt% based on gelatin) and varying contents of coffee leaf extract (CLE, 1, 3, 5 and 7 wt% based on gelatin) were incorporated into gelatin (GEL) matrix to develop multifunctional food packaging films. DCMC acted as a physical reinforcing filler through crosslinking with GEL matrix by Schiff-base reaction, CLE served as an active filler to confer film functional properties. The micro-morphology, micro-structure, physicochemical and functional properties of the GEL/DCMC/CLE composite film were investigated. The results demonstrated that mechanical, barrier properties and thermal stability of films were significantly improved by incorporation of CLE. Compared with pure GEL film, the GEL/DCMC/5%CLE film exhibited excellent UV light blocking while kept enough transparency, the best mechanical property, water resistance, water vapor and oxygen barrier, as well as thermal stability. GEL/DCMC/5%CLE film also possessed strong antioxidant activity and some antibacterial activity against E. coli and S. aureus. Packaging application testing demonstrated that the resultant GEL/DCMC/5%CLE film effectively delayed the lipid oxidation of walnut oil and preserved the postharvest freshness of fresh walnut kernels under ambient conditions.
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Affiliation(s)
- Fangfei Sun
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Peng Shan
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Bingzhen Liu
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Yongshi Li
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Kun Wang
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Yongliang Zhuang
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Delu Ning
- Yunnan Academy of Forestry and Grassland, Kunming 650201, China
| | - Hui Li
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.
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Miao F, Geng S, Ning D. Hydroxytyrosol ameliorates LPS-induced acute liver injury (ALI) in mice by modulating the balance between M1/M2 phenotype macrophage and inhibiting TLR4/NF-κB activation. J Funct Foods 2023. [DOI: 10.1016/j.jff.2023.105455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023] Open
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Miao F, Shan C, Geng S, Ning D. Oleocanthal alleviated lipopolysaccharide-induced acute lung injury in chickens by inhibiting TLR4/NF-κB pathway activation. Poult Sci 2022; 102:102458. [PMID: 36640559 PMCID: PMC9842928 DOI: 10.1016/j.psj.2022.102458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 12/09/2022] [Accepted: 12/25/2022] [Indexed: 12/31/2022] Open
Abstract
This study aimed to investigate the ameliorative effect of oleocanthal (OC) on lipopolysaccharide (LPS)-induced acute lung injury (ALI) in chickens and its possible mechanisms. In total, 20 chickens were randomly divided into 4 groups: control (CON) group, LPS group, LPS + OC group, and OC group. LPS + OC and OC groups were intragastrically administered a 5 mg/kg·d OC dose for 7 d. On d 8, the LPS group and LPS + OC group were intratracheally administered 2 mg/kg LPS for 12 h. It was found that OC ameliorated the pathological morphology and significantly suppressed apoptosis after OC treatment in LPS-induced ALI chicken (P < 0.01). Antioxidant capacity was higher in the LPS + OC group compared with the LPS group (P < 0.01). OC downregulated the related genes and proteins expression of toll-like receptor 4/nuclear factor-κB (TLR4/NF-κB) pathway in LPS group (P < 0.01). In conclusion, OC supplementation can alleviate LPS-induced ALI in chickens by suppressing apoptosis, enhancing lung antioxidant capacities and inhibiting TLR4/NF-κB pathway activation.
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Affiliation(s)
- Fujun Miao
- Yunnan Academy of Forestry and Grassland, Kunming, 650204, P. R. China.
| | - Chunlan Shan
- College of Animal Science, Guizhou University, Guiyang, 550000, P. R. China
| | - Shuxiang Geng
- Yunnan Academy of Forestry and Grassland, Kunming, 650204, P. R. China
| | - Delu Ning
- Yunnan Academy of Forestry and Grassland, Kunming, 650204, P. R. China
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Wu T, Ma T, Xu T, Pan L, Zhang Y, Li Y, Ning D. The De Novo Genome Assembly of Olea europaea subsp. cuspidate, a Widely Distributed Olive Close Relative. Front Genet 2022; 13:868540. [PMID: 36092936 PMCID: PMC9454953 DOI: 10.3389/fgene.2022.868540] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 05/09/2022] [Indexed: 11/13/2022] Open
Abstract
The olive complex, comprising six subspecies, is a valuable plant for global trade, human health, and food safety. However, only one subspecies (Olea europaea subsp. europaea, OE) and its wild relative (Olea europaea subsp. europaea var. sylvestris, OS) have genomic references, hindering our understanding of the evolution of this species. Using a hybrid approach by incorporating Illumina, MGI, Nanopore, and Hi-C technologies, we obtained a 1.20-Gb genome assembly for the olive subspecies, Olea europaea subsp. cuspidate (OC), with contig and scaffold N50 values of 5.33 and 50.46 Mb, respectively. A total of 43,511 protein-coding genes were predicted from the genome. Interestingly, we observed a large region (37.5 Mb) of “gene-desert” also called “LTR-hotspot” on chromosome 17. The gene origination analyses revealed a substantial outburst (19.5%) of gene transposition events in the common ancestor of olive subspecies, suggesting the importance of olive speciation in shaping the new gene evolution of OC subspecies. The divergence time between OC and the last common ancestor of OE and OS was estimated to be 4.39 Mya (95% CI: 2.58–6.23 Mya). The pathways of positively selected genes of OC are related to the metabolism of cofactors and vitamins, indicating the potential medical and economic values of OC for further research and utilization. In summary, we constructed the de novo genome assembly and protein-coding gene pool for Olea europaea subsp. cuspidate (OC) in this study, which may facilitate breeding applications of improved olive varieties from this widely distributed olive close relative.
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Affiliation(s)
| | | | | | | | | | - Yongjie Li
- *Correspondence: Yongjie Li, ; Delu Ning,
| | - Delu Ning
- *Correspondence: Yongjie Li, ; Delu Ning,
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Wang H, Miao F, Ning D, Shan C. Ellagic acid Alleviates hepatic ischemia-reperfusion injury in C57 mice via the Caspase-1-GSDMD pathway. BMC Vet Res 2022; 18:229. [PMID: 35717170 PMCID: PMC9206301 DOI: 10.1186/s12917-022-03326-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 05/27/2022] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Ellagic acid (EA) has improving function against oxidative damage and inflammatory reaction in many disorders. Hepatic ischemia-reperfusion injury (IRI) is a common pathophysiological phenomenon in the veterinary clinic. In the present study, the protective effects of EA pretreatment against hepatic IRI-induced injury and the underlying mechanisms were investigated. RESULTS We found that pyroptosis is involved in hepatic IRI, which is manifested in increasing the expression of pyroptosis-related genes and promoting the expression of active caspase-1, thereby cleaving GSDMD-N to cause pyroptosis, and caspase-1-/- mice were used to verify this conclusion. In addition, we found that EA protects against hepatic IRI by inhibiting pyroptosis, including reducing the activity of caspase-1 and its expression in the liver, inhibiting the lysis of GSDMD-N, and reducing the levels of IL-18 and IL-1β. CONCLUSIONS The present results have demonstrated that prophylactic administration of EA ameliorated hepatic IRI by inhibiting pyroptosis induced in hepatic ischemia-reperfusion in vivo through the caspase-1-GSDMD axis, providing a potential therapeutic option prevent hepatic IRI in pets.
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Affiliation(s)
- Hao Wang
- College of Animal Science, Guizhou University, Guiyang, 550000, China
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, 650201, China
| | - Fujun Miao
- Yunnan Academy of Forestry and Grassland, Kunming, 650204, China
| | - Delu Ning
- College of Animal Science, Guizhou University, Guiyang, 550000, China.
- Yunnan Academy of Forestry and Grassland, Kunming, 650204, China.
| | - Chunlan Shan
- College of Animal Science, Guizhou University, Guiyang, 550000, China.
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Miao F, Shan C, Ning D. Walnut oil alleviates LPS-induced intestinal epithelial cells injury by inhibiting TLR4/MyD88/NF-κB pathway activation. J Food Biochem 2021; 45:e13955. [PMID: 34580887 DOI: 10.1111/jfbc.13955] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 09/16/2021] [Accepted: 09/19/2021] [Indexed: 12/14/2022]
Abstract
In this study, we investigated the protective effects of walnut oil (WO) on mouse intestinal epithelial cells using used MODE-K cells as a model and explored the underlying mechanisms. Our data suggested that WO attenuated lipopolysaccharide (LPS)-induced pathological changes and inhibited the rate of LPS-induced apoptosis in MODE-K cells. Furthermore, WO down-regulated LPS-induced gene and protein expression of toll-like receptor 4 (TLR4), myeloid differentiation primary response gene 88 (MyD88), nuclear factor-κB (NF-κB), tumor necrosis factor-α, and interleukin-6. In conclusion, this study shows that WO exerts an anti-inflammatory effect on LPS-induced MODE-K cells injury by inhibiting the TLR4/MyD88/NF-κB pathway activation. Based on our data, a prominent functional food candidate can be provided for inflammatory bowel disease treatment. PRACTICAL APPLICATIONS: Walnut oil (WO) has excellent anti-inflammatory properties and is widely used in traditional dietary supplements. However, whether WO causes anti-lipopolysaccharide (LPS)-induced intestinal injury remains unclear. In this study, we investigated the protective effects of WO on mouse intestinal epithelial cells using MODE-K cells as a model and explored their potential mechanisms. Our data showed that WO ameliorated the pathological morphology, inhibited the apoptosis of LPS-induced MODE-K cell injury, decreased the release of pro-inflammatory cytokines, and down-regulated the related genes and proteins expression of the LPS-TLR4/MyD88/NF-κB inflammatory pathway. The results of this study would enhance the utilization of WO in the prevention of gastrointestinal diseases in animals and humans inflammatory bowel disease as well as in functional foods formulations.
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Affiliation(s)
- Fujun Miao
- Yunnan Academy of Forestry and Grassland, Kunming, China
| | - Chunlan Shan
- College of Animal Science, Guizhou University, Guiyang, China
| | - Delu Ning
- Yunnan Academy of Forestry and Grassland, Kunming, China
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Yu C, Li X, Han B, Zhao Y, Geng S, Ning D, Ma T, Yu X. Simultaneous improvement of astaxanthin and lipid production of Haematococcus pluvialis by using walnut shell extracts. ALGAL RES 2021. [DOI: 10.1016/j.algal.2020.102171] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Miao F, Shan C, Ma T, Geng S, Ning D. Walnut oil alleviates DSS-induced colitis in mice by inhibiting NLRP3 inflammasome activation and regulating gut microbiota. Microb Pathog 2021; 154:104866. [PMID: 33775855 DOI: 10.1016/j.micpath.2021.104866] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 03/10/2021] [Accepted: 03/10/2021] [Indexed: 12/11/2022]
Abstract
Ulcerative colitis (UC) has become a global disease and closely related to changes in intestinal oxidative stress, inflammatory factors and gut microbiota. Furthermore, the NLRP3 inflammasome activation is a key cause in the pathogenesis of dextran sulfate sodium (DSS)-induced colitis. Recent data showed the potential antioxidative and anti-inflammatory advantage of walnut oil, which widely used in traditional medicine and has become a dietary supplement for some patients. Therefore, we investigated whether walnut oil exerts an anti-inflammatory effect on DSS-induced colitis mice by targeting NLRP3 inflammasome and gut microbiota. Our data showed that walnut oil ameliorated the pathological morphology, decreased the reactive oxygen species (ROS) production and pro-inflammatory cytokines release, down-regulated the related gene proteins expression of NLRP3/ASC/Caspase-1 inflammatory pathway, inhibited apoptosis, shifted from more pathogens towards probiotics, and increased the levels of short-chain fatty acids (SCFAs) in DSS-induced damaging process. Collectively, our study concludes that walnut oil exerts anti-inflammatory effect on DSS-induced colitis in mice by inhibiting the NLRP3 inflammasome activation and modulating gut microbiota, and may be a prominent functional food candidate for UC treatment.
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Affiliation(s)
- Fujun Miao
- Yunnan Academy of Forestry and Grassland, Kunming, 650204, China
| | - Chunlan Shan
- College of Animal Science and Technology, Yunnan Agricultural University, Kunming, 650201, China.
| | - Ting Ma
- Yunnan Academy of Forestry and Grassland, Kunming, 650204, China
| | - Shuxiang Geng
- Yunnan Academy of Forestry and Grassland, Kunming, 650204, China
| | - Delu Ning
- Yunnan Academy of Forestry and Grassland, Kunming, 650204, China.
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Miao F, Shan C, Shah SAH, Akhtar RW, Geng S, Ning D, Wang X. The protective effect of walnut oil on lipopolysaccharide-induced acute intestinal injury in mice. Food Sci Nutr 2021; 9:711-718. [PMID: 33598156 PMCID: PMC7866627 DOI: 10.1002/fsn3.2035] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 09/12/2020] [Accepted: 11/13/2020] [Indexed: 12/17/2022] Open
Abstract
Walnut oil (WO) is widely used in traditional medicine, and it has become a dietary supplement in many countries. We isolated walnut oil from Juglans sigillata and evaluated its protective effects on acute intestinal injury, and Toll-like receptor 4 (TLR4)/nuclear factor-κB (NF-κB) signaling pathway in lipopolysaccharide (LPS)-induced mice was studied. The results showed that the LPS + WO group significantly decreased serum tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and IL-1β levels and increased the jejunum superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) levels compared with the LPS group. Walnut oil ameliorated the pathological morphology of the LPS-induced acute jejunum injury and decreased jejunum cells apoptosis rate and TLR4/NF-κB protein expression. Furthermore, the expression of the TLR4/NF-κB pathway key gene mRNA significantly reduced after treatment with walnut oil. This study concludes that walnut oil can exert the protective effect on LPS-induced acute intestinal injury in mice by inhibiting the TLR4/NF-κB signaling pathway.
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Affiliation(s)
- Fujun Miao
- College of Food Science and TechnologyYunnan Agricultural UniversityKunmingChina
- Yunnan Academy of Forestry and GrasslandKunmingChina
| | - Chunlan Shan
- College of Animal Science and TechnologyYunnan Agricultural UniversityKunmingChina
| | - Syed Aftab Hussain Shah
- Pakistan Scientific & Technological Information CenterQuaid‐i‐Azam University CampusIslamabadPakistan
| | - Rana Waseem Akhtar
- Department of Veterinary and Animal SciencesMuhammad Nawaz Shareef University of AgricultureMultanPakistan
| | - Shuxiang Geng
- Yunnan Academy of Forestry and GrasslandKunmingChina
| | - Delu Ning
- Yunnan Academy of Forestry and GrasslandKunmingChina
| | - Xuanjun Wang
- College of Food Science and TechnologyYunnan Agricultural UniversityKunmingChina
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Li Q, Zhao Y, Ding W, Han B, Geng S, Ning D, Ma T, Yu X. Gamma-aminobutyric acid facilitates the simultaneous production of biomass, astaxanthin and lipids in Haematococcus pluvialis under salinity and high-light stress conditions. Bioresour Technol 2021; 320:124418. [PMID: 33221643 DOI: 10.1016/j.biortech.2020.124418] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/11/2020] [Accepted: 11/11/2020] [Indexed: 05/20/2023]
Abstract
The effects of γ-aminobutyric acid (GABA) on the biomass and astaxanthin and lipids production in Haematococcus pluvialis under combined salinity stress and high-light stresses were investigated. The results showed that the highest biomass (1.65 g L-1), astaxanthin production (3.86 mg L-1 d-1) and lipids content (55.11%) in H. pluvialis LUGU were observed under the 0.25 mM GABA treatment. Moreover, compared with salinity and high-light stress, GABA treatment also increased the transcript levels of biosynthesis genes, the contents of endogenous GABA and carbohydrates but decreased reactive oxygen species (ROS) levels. Further evidence revealed that intracellular GABA could regulate cell growth, astaxanthin production and lipids synthesis by mediating carotenogenesis, lipogenesis and ROS signalling. Collectively, this study provides a combined strategy for promoting the coproduction of astaxanthin and lipids and sheds light on the regulatory mechanism through which GABA affects cell growth, astaxanthin production and lipids biosynthesis in H. pluvialis under unfavourable conditions.
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Affiliation(s)
- Qingqing Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Yongteng Zhao
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Wei Ding
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Benyong Han
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Shuxiang Geng
- Yunnan Academy of Forestry and Grassland, Kunming 650051, China
| | - Delu Ning
- Yunnan Academy of Forestry and Grassland, Kunming 650051, China
| | - Ting Ma
- Yunnan Academy of Forestry and Grassland, Kunming 650051, China
| | - Xuya Yu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China.
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12
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Zhao Y, Wang HP, Yu C, Ding W, Han B, Geng S, Ning D, Ma T, Yu X. Integration of physiological and metabolomic profiles to elucidate the regulatory mechanisms underlying the stimulatory effect of melatonin on astaxanthin and lipids coproduction in Haematococcus pluvialis under inductive stress conditions. Bioresour Technol 2021; 319:124150. [PMID: 32977092 DOI: 10.1016/j.biortech.2020.124150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 09/15/2020] [Accepted: 09/16/2020] [Indexed: 05/20/2023]
Abstract
The effect of melatonin (MT) on the coproduction of astaxanthin and lipids was studied in Haematococcus pluvialis under inductive stress conditions. The contents of astaxanthin and lipids were enhanced by 1.78- and 1.3-fold, respectively. MT treatment upregulated the transcription levels of carotenogenic, lipogenic and antioxidant system-related genes and decreased the levels of abiotic stress-induced reactive oxidative species (ROS). Further metabolomic analysis suggested that the intermediates in glycolysis and TCA cycle facilitate the accumulation of astaxanthin and lipids in algae treated with MT. Meanwhile, MT treatment upregulated the metabolite levels of the γ-aminobutyric acid (GABA) shunt, which might regulate the carbon-nitrogen balance and the antioxidant system. After MT treatment, exogenous linoleic acid, succinate, and GABA further increased the astaxanthin content. This study may help to elucidate the specific responses to MT induction in H. pluvialis and to identify novel biomarkers that may be employed to further promote astaxanthin and lipids coproduction.
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Affiliation(s)
- Yongteng Zhao
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Hui-Ping Wang
- Children's Hospital Affiliated to Kunming Medical University, Kunming 650228, China
| | - Chunli Yu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Wei Ding
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Benyong Han
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Shuxiang Geng
- Yunnan Academy of Forestry and Grassland, Kunming 650051, China
| | - Delu Ning
- Yunnan Academy of Forestry and Grassland, Kunming 650051, China
| | - Ting Ma
- Yunnan Academy of Forestry and Grassland, Kunming 650051, China
| | - Xuya Yu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China.
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Miao F, Shan C, Shah SAH, Akhtar RW, Wang X, Ning D. Effect of walnut (Juglans sigillata) oil on intestinal antioxidant, anti-inflammatory, immunity, and gut microbiota modulation in mice. J Food Biochem 2020; 45:e13567. [PMID: 33222270 DOI: 10.1111/jfbc.13567] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 11/02/2020] [Accepted: 11/02/2020] [Indexed: 11/28/2022]
Abstract
The study investigated the anti-oxidant, anti-inflammatory, immunity, and gut microbiota modulation in mice (n = 60; 15 mice/group) after intragastric administration of walnut oil (WO; three groups (low (LD), medium (MD), and high doses (HD): 2.5, 5, and 10 ml/kg, respectively) and normal control (NC, saline). WO significantly increased the median villous height/crypt depth (VH/CD) ratio, the activities of superoxide dismutase (SOD), and glutathione peroxidase (GSH-Px) in intestinal mucosa. WO exerted the anti-inflammatory effects by decreasing the expression of tumor necrosis factor-α (TNF-α) in the duodenal mucosa. All groups shared 157 operational taxonomic units (OTUs; 97% similarity) representing nine phyla. The relative abundance in gut microbiota shifted from more pathogenic bacteria-Helicobacter (NC: 22% versus MD: 3%) toward probiotic-Lactobacillus (NC: 19% versus MD: 40%). The immune organ index (spleen) and contents of secretory immunoglobulin A (S-IgA) were increased from small intestine. In conclusion, WO decreased the oxidative stress, inflammation, and improved the immunity and beneficial gut microbiota in the mice. PRACTICAL APPLICATIONS: Walnut oil (WO) is widely used in traditional medicine around the world and is prescribed as beneficial food oil in agro-industry. However, the intestinal benefits of WO have not been explored extensively, and even its therapeutic mechanism still remains unknown in modern medicine. In this study, WO from Juglans sigillata was investigated for its preventive and protective effects on the intestinal mucosa in mice including anti-oxidant, anti-inflammatory, immunity, and gut microbiota modulation. WO decreased the oxidative stress, inflammation, and improved immunity and beneficial gut microbiota in the mice. WO has shown strong probiotic effect on the gut, and thus, can be considered as a potential candidate in food. The study outcome would enhance utilization of WO for the prevention of gastrointestinal diseases (e.g., Helicobacter, etc.) both in animals and human (inflammatory bowel diseases, IBD) and the formulation of functional foods.
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Affiliation(s)
- Fujun Miao
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, China.,Yunnan Academy of Forestry and Grassland, Kunming, China
| | - Chunlan Shan
- College of Animal Science and Technology, Yunnan Agricultural University, Kunming, China
| | - Syed Aftab Hussain Shah
- Pakistan Scientific & Technological Information Center, Quaid-i-Azam University Campus, Islamabad, Pakistan
| | - Rana Waseem Akhtar
- Faculty of Veterinary and Animal Sciences, Muhammad Nawaz Shareef University of Agriculture, Multan, Pakistan
| | - Xuanjun Wang
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, China
| | - Delu Ning
- Yunnan Academy of Forestry and Grassland, Kunming, China
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Li D, Long C, Pang X, Ning D, Wu T, Dong M, Han X, Guo H. The newly developed genomic-SSR markers uncover the genetic characteristics and relationships of olive accessions. PeerJ 2020; 8:e8573. [PMID: 32095373 PMCID: PMC7024576 DOI: 10.7717/peerj.8573] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 01/15/2020] [Indexed: 12/30/2022] Open
Abstract
Background Olive (Olea europaea L.) is an important oil and fruit crop worldwide, owning a rich germplasm with a large number of cultivars. Simple sequence repeats (SSRs) are excellent markers and have been used for the identification of olive cultivars. However, the limited number of SSR markers and the occurrence of confusion on the names of cultivars, as well as the possible appearance of clonal variation make it difficult to identify cultivars and interpret relationships among olive cultivars. Method SSR markers were designed based on trinucleotide repeat sequences by screening the whole genome of olive, and the polymorphic SSR markers were developed that were applied to the identification of 53 olive accessions. The genetic characteristics and relationships of these olive accessions were evaluated based on the developed SSR markers. Results Twenty-one highly polymorphic genomic-SSR markers were developed, covering most chromosomes of olive. These SSR markers could well distinguish all 53 olive accessions, confirming their effectiveness. DNA fingerprints of the 53 olive accessions were constructed based on the 21 SSR markers. The dendrogram clearly divided the tested accessions into two main groups, which was also supported by the results of principal coordinate analysis. A total of 31 private alleles were detected in 15 olive accessions, which reflected the genetic diversity within 53 olive accessions to some extent. Six homonymy cases were also clarified by genetic analysis. These results suggest that the newly developed olive SSR markers are informative for the exploitation, preservation and breeding of olive.
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Affiliation(s)
- Danyang Li
- National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Cui Long
- National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Xiaoming Pang
- National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Delu Ning
- Yunnan Academy of Forestry and Grassland, Kunming, Yunnan, China
| | - Tao Wu
- Yunnan Academy of Forestry and Grassland, Kunming, Yunnan, China
| | - Mingliang Dong
- National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Xiaoning Han
- National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Huihong Guo
- National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
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Zhao Y, Xing H, Li X, Geng S, Ning D, Ma T, Yu X. Physiological and Metabolomics Analyses Reveal the Roles of Fulvic Acid in Enhancing the Production of Astaxanthin and Lipids in Haematococcus pluvialis under Abiotic Stress Conditions. J Agric Food Chem 2019; 67:12599-12609. [PMID: 31644277 DOI: 10.1021/acs.jafc.9b04964] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this study, it was found that fulvic acid (FA) enhanced the contents of astaxanthin and lipids in Haematococcus pluvialis under high light and nitrogen starvation conditions by 2- and 1.2-fold, respectively. Meanwhile, the carbohydrate and chlorophyll contents were decreased by FA induction, whereas the levels of reactive oxygen species (ROS) and glutathione (GSH) as well as the expression of astaxanthin and lipid biosynthetic genes were increased. To further explore the interrelation between FA and the biosynthesis of astaxanthin and lipids, a metabolomics analysis of H. pluvialis by combined FA and abiotic stress exposure was conducted by using LC-MS/MS. The contents of some cytoprotective metabolites and signal molecules, including d-maltose, succinate, malic acid, melatonin (MT), and some amino acids, were increased under FA induction and abiotic stress conditions. These metabolites are intermediates in the TCA cycle and Calvin cycle, providing more precursors for the synthesis of astaxanthin and lipids. Moreover, the signal molecules might contribute to enhancing the abiotic stress tolerance. This study provided new insights into the regulatory mechanism of FA on astaxanthin and lipid accumulation in H. pluvialis.
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Affiliation(s)
- Yongteng Zhao
- Faculty of Life Science and Technology , Kunming University of Science and Technology , Kunming 650500 , China
| | - Hailiang Xing
- Faculty of Life Science and Technology , Kunming University of Science and Technology , Kunming 650500 , China
| | - Xingyu Li
- The First People's Hospital of Yunnan , Kunming 650100 , China
| | | | - Delu Ning
- Yunnan Academy of Forestry , Kunming 650051 , China
| | - Ting Ma
- Yunnan Academy of Forestry , Kunming 650051 , China
| | - Xuya Yu
- Faculty of Life Science and Technology , Kunming University of Science and Technology , Kunming 650500 , China
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16
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Ding W, Li Q, Han B, Zhao Y, Geng S, Ning D, Ma T, Yu X. Comparative physiological and metabolomic analyses of the hyper-accumulation of astaxanthin and lipids in Haematococcus pluvialis upon treatment with butylated hydroxyanisole. Bioresour Technol 2019; 292:122002. [PMID: 31437797 DOI: 10.1016/j.biortech.2019.122002] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 08/09/2019] [Accepted: 08/10/2019] [Indexed: 06/10/2023]
Abstract
The major goal of this study was to explore the functions of butylated hydroxyanisole (BHA) combined with abiotic stress on the cultivation of the microalga Haematococcus pluvialis for astaxanthin and lipid production. Here, the effect of BHA on astaxanthin and lipid accumulation and physiological and metabolomic profiles was investigated. These results suggested that astaxanthin content was increased by 2.17-fold compared to the control. The lipid content was enhanced by 1.22-fold. BHA treatment simultaneously reduced carbohydrates and protein and delayed the decay of chlorophyll. Furthermore, metabolomic analysis demonstrated that BHA upregulated and activated the bioprocesses involved in cellular basal metabolism and signalling systems, such as glycolysis, the TCA cycle, amino acid metabolism and the phosphatidylinositol signalling system, thus enhancing astaxanthin and lipid accumulation. Altogether, this research shows the dramatic effects of BHA on algal metabolism in the regulation of key metabolic nodes and provides novel insights into microalgal regulation and metabolism.
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Affiliation(s)
- Wei Ding
- Faculty of Life Sciences and Technology, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Qingqing Li
- Faculty of Life Sciences and Technology, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Benyong Han
- Faculty of Life Sciences and Technology, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Yongteng Zhao
- Faculty of Life Sciences and Technology, Kunming University of Science and Technology, Kunming, Yunnan, China
| | | | - Delu Ning
- Yunnan Academy of Forestry, Kunming 650051, China
| | - Ting Ma
- Yunnan Academy of Forestry, Kunming 650051, China
| | - Xuya Yu
- Faculty of Life Sciences and Technology, Kunming University of Science and Technology, Kunming, Yunnan, China.
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Ni M, Gu K, Hassan B, Ning D, Zheng Y, Qi Y, Xu Y. Effect of oviposition by Bactrocera dorsalis on the antioxidant activity of orange juice. BRAZ J BIOL 2019; 80:641-647. [PMID: 31644657 DOI: 10.1590/1519-6984.218661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 03/06/2019] [Indexed: 11/22/2022] Open
Abstract
Among fruits and fruit products, oranges and orange juice are the most widely consumed worldwide. However, the effects of pest infestation of oranges on the quality of orange juice are not yet known. To evaluate the effect of the oriental fruit fly Bactrocera dorsalis on the antioxidant activity of orange juice, we measured changes in the vitamin C (Vc) concentration, total phenol content, and antioxidant activity of orange juice after the introduction of fruit fly eggs. Ten days after the eggs were introduced (larvae removed), the concentration of Vc in orange juice was 18.65 µg/mL, which was 9.16 µg/mL lower than that measured in healthy orange juice. In addition, the total phenol content decreased by 46.519 mg Gallic Acid Equivalents (GAE)/g to 9.748 mg GAE/g. Furthermore, the free-radical scavenging activity decreased from 22.297% to 5.393%. Correlation analysis indicated significant correlations between Vc concentration, total phenol content, and antioxidant activity of orange juice after B. dorsalis infestation. The decrease in Vc concentration, total phenol content and free-radical scavenging activity indicated that B. dorsalis changed the quality of orange juice by affecting the antioxidant activity of the juice after the oranges were infested.
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Affiliation(s)
- M Ni
- Department of Entomology, South China Agricultural University, Guangzhou, China
| | - K Gu
- Department of Entomology, South China Agricultural University, Guangzhou, China
| | - B Hassan
- Department of Entomology, South China Agricultural University, Guangzhou, China
| | - D Ning
- Department of Entomology, South China Agricultural University, Guangzhou, China
| | - Y Zheng
- Department of Entomology, South China Agricultural University, Guangzhou, China
| | - Y Qi
- Department of Entomology, South China Agricultural University, Guangzhou, China
| | - Y Xu
- Department of Entomology, South China Agricultural University, Guangzhou, China
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Liu J, Chen D, Wang Z, Chen C, Ning D, Zhao S. Protective effect of walnut on d-galactose-induced aging mouse model. Food Sci Nutr 2019; 7:969-976. [PMID: 30918639 PMCID: PMC6418433 DOI: 10.1002/fsn3.907] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 11/06/2018] [Accepted: 11/09/2018] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVE S Accumulating evidence has suggested that oxidative stress and apoptosis are involved in the aging process. d-galactose (gal) has been reported to cause symptoms of aging in mice, accompanied by liver and brain injuries. Our present work was to study the potential antioxidative and anti-apoptotic effects of walnut and to explore how these effects act on mice in a d-gal-induced aging model. MATERIALS AND METHODS Aging mice were induced by subcutaneous injection of d-gal (200 mg kg-1 d-1 for 8 weeks). Walnut samples were simultaneously administered to the d-gal-induced aging mice once daily by intragastric gavage. Finally, body weight, organ index, cognitive function, levels of antioxidative enzymes, and liver function were monitored. RESULTS The kernel pellicles of walnut could not only improve the learning and memory ability, and the organ index, but also significantly decrease body weight and normalize the levels of activity of antioxidative enzymes in aging mice. Further, the walnut seed coat would protect damages of hippocampus and liver in aging mice. HIGHLIGHTS In the current study, we investigated the effects of walnut kernels and walnut seed coats (WSCs) on d-galactose-induced aging mice. WSC was firstly found to have beneficial effects on d-gal-treated mouse's brain with learning and memory impairment, which probably through the underlying mechanism reduces oxidative damage and limits neuroinflammation. In addition, WSC had a protective effect on liver damage in d-galactose sensing mice.
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Affiliation(s)
- Ji Liu
- School of Chinese Materia MedicaYunnan University of Traditional Chinese MedicineKunmingChina
| | - Dan Chen
- Yunnan Institute of Tobacco Quality Inspection and SupervisionKunmingChina
| | - Zukun Wang
- School of Chinese Materia MedicaYunnan University of Traditional Chinese MedicineKunmingChina
| | | | - Delu Ning
- Yunnan Academy of ForestryKunmingChina
| | - Shenglan Zhao
- School of Chinese Materia MedicaYunnan University of Traditional Chinese MedicineKunmingChina
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Wang X, Chen D, Li Y, Zhao S, Chen C, Ning D. Alleviating effects of walnut green husk extract on disorders of lipid levels and gut bacteria flora in high fat diet-induced obesity rats. J Funct Foods 2019. [DOI: 10.1016/j.jff.2018.11.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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Chen L, Dong R, Ma Q, Zhang Y, Xu S, Ning D, Chen Q, Pei D. Precocious genotypes and homozygous tendency generated by self-pollination in walnut. BMC Plant Biol 2018; 18:323. [PMID: 30509158 PMCID: PMC6278120 DOI: 10.1186/s12870-018-1549-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 11/21/2018] [Indexed: 06/01/2023]
Abstract
BACKGROUND Observations of precocious (early bearing) genotypes of walnut (Juglans regia L.) under natural conditions encouraged us to study the origin and genetic control of these fascinating traits. RESULTS In this study, the self-fertility, progeny performance, and simple sequence repeat (SSR) locus variation of iron walnut (Juglans sigillata Dode), an ecotype of J. regia, were investigated. The average self-pollinated fruit set rate of J. sigillata cv. 'Dapao' (DP) was 7.0% annually from 1979 to 1982. The average germination rate of self-pollinated seeds was 45.2% during the 4-year period. Most progeny had inbreeding depression. Nine representative self-pollinated progeny (SP1-SP9), with special or typical traits of DP, were selected. SP1-SP4 were precocious because they initiated flowers as early as 2 years after germination, compared to the 7-10-yr period that is typical of DP. SP9 had not flowered since 1980. Twelve SSR markers were used to analyze the SP and DP. The genome of SP had a tendency toward high levels of homozygosity. The high levels of homozygosity reported in 18 additional precocious walnut genotypes complemented the results of this study. CONCLUSIONS These results provide evidence of precocious phenotypes and genomes with high levels of homozygosity that might be generated from self-pollinating walnut. This suggests that self-pollination might facilitate the generation of unique homozygous parents for subsequent use in walnut-breeding programs. The results also indicate that more attention should be focused on adequate management of precocious walnut to avoid early depression in the production of nuts.
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Affiliation(s)
- Lingna Chen
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091 China
- Research Institute of Resources Insects, Chinese Academy of Forestry, Kunming, 650233 Yunnan China
| | - Runquan Dong
- Yunnan Academy of Forestry, Kunming, 650204 Yunnan China
| | - Qingguo Ma
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091 China
| | - Yu Zhang
- Yunnan Academy of Forestry, Kunming, 650204 Yunnan China
| | - Shizhong Xu
- Dali Forest Resource Management Station, Dali, 671000 Yunnan China
| | - Delu Ning
- Yunnan Academy of Forestry, Kunming, 650204 Yunnan China
| | - Qin Chen
- Yunnan Academy of Forestry, Kunming, 650204 Yunnan China
| | - Dong Pei
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091 China
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Abdollahi MR, Hosking BJ, Ning D, Ravindran V. Influence of Palm Kernel Meal Inclusion and Exogenous Enzyme Supplementation on Growth Performance, Energy Utilization, and Nutrient Digestibility in Young Broilers. Asian-Australas J Anim Sci 2016; 29:539-48. [PMID: 26949955 PMCID: PMC4782089 DOI: 10.5713/ajas.15.0224] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 06/08/2015] [Accepted: 07/30/2015] [Indexed: 11/27/2022]
Abstract
The objective of the present study was to investigate the influence of palm kernel meal (PKM) inclusion and exogenous enzyme supplementation on growth performance, nitrogen-corrected apparent metabolizable energy (AMEn), coefficient of apparent ileal digestibility (CAID) and total tract retention of nutrients in young broilers fed corn-based diets. Four inclusion levels of PKM (no PKM [PKM0], 8% [PKM8], 16% [PKM16], and 24% [PKM24]) and two enzyme additions were evaluated in a 4×2 factorial arrangement of treatments. A total of 384, one-d-old male broilers (Ross 308) were individually weighed and allocated to 48 cages (eight broilers/cage), and cages were randomly assigned to eight dietary treatments. Results indicated that the inclusion of 8% and 16% PKM increased (p<0.05) the weight gain compared to the PKM0 diet. Birds fed the PKM8 diets had the highest (p<0.05) feed intake. Weight gain and feed intake were severely reduced (p<0.05) by feeding the PKM24 diet. Enzyme supplementation increased weight gain (p<0.05), independent of PKM inclusion level. In PKM0 and PKM8 diets, enzyme addition significantly (p<0.05) lowered feed conversion ratio (FCR); whereas enzyme addition had no effect on FCR of birds fed PKM16 and PKM24 diets. In PKM0 and PKM16 diets, enzyme addition significantly (p<0.05) increased CAID of nitrogen and energy but had no effect in the PKM8 and PKM24 diets. Inclusion of PKM into the basal diet, irrespective of inclusion level, enhanced (p<0.05) starch and fat digestibility. Inclusion of PKM at 16% and 24% resulted in similar CAID of neutral detergent fiber (NDF) but higher (p<0.05) than that of the PKM0 and PKM8 diets. Enzyme addition, regardless of the level of PKM inclusion, significantly (p<0.05) increased CAID of NDF. There was a significant (p<0.05) decrease in AMEn with PKM inclusion of 24%. The present data suggest that inclusion of PKM in broiler diets could be optimized if PKM-containing diets are formulated based on digestible amino acid contents and supplemented with exogenous enzymes. If amino acid digestibility and AME of PKM considered in the formulation, it can be included in broiler diets up to 16% with no deleterious effects on growth performance.
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Affiliation(s)
- M R Abdollahi
- AsiaPac Biotechnology Co. Ltd., Dongguan City, Guangdong 523808, China
| | - B J Hosking
- AsiaPac Biotechnology Co. Ltd., Dongguan City, Guangdong 523808, China
| | - D Ning
- AsiaPac Biotechnology Co. Ltd., Dongguan City, Guangdong 523808, China
| | - V Ravindran
- AsiaPac Biotechnology Co. Ltd., Dongguan City, Guangdong 523808, China
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Ning D, Yuan JM, Wang YW, Peng YZ, Guo YM. The net energy values of corn, dried distillers grains with solubles and wheat bran for laying hens using indirect calorimetry method. Asian-Australas J Anim Sci 2014; 27:209-16. [PMID: 25049945 PMCID: PMC4093209 DOI: 10.5713/ajas.2013.13243] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Revised: 08/23/2013] [Accepted: 07/12/2013] [Indexed: 11/29/2022]
Abstract
The present study was conducted to estimate the NE values of corn, dried distillers grains with solubles (DDGS) and wheat bran (WB) for laying hens based on an indirect calorimetry method and nitrogen balance measurements. A total of 576 twenty-eight-wk-old Dwarf Pink-shell laying hens were randomly assigned to four groups fed a basal diet (BD) or a combination of BD with 50% corn or 20% DDGS or 20% WB, with four replicates each. After a 7-d adaptation period, each replicate with 36 hens were kept in one of the two respiration chambers to measure the heat production (HP) for 6 days during the feeding period and subsequent 3-d fasting. The equilibrium fasting HP (FHP) provided an estimate of NE requirements for maintenance (NEm). The NE values of test feedstuffs was estimated using the difference method. Results showed that the heat increment that contributed 35.34 to 37.85% of ME intake was not influenced by experimental diets (p>0.05) when expressed as Mcal/kg of DM feed intake. Lighting increased the HP in hens in an fed-state. The FHP decreased over time (p<0.05) with the lowest value determined on the third day of starvation. No significant difference between treatments was found on FHP of d 3 (p>0.05). The estimated AME, AMEn, and NE values were 3.46, 3.44 and 2.25 Mcal/kg DM for corn, 3.11, 2.79, and 1.80 Mcal/kg DM for DDGS, 2.14, 2.10, and 1.14 Mcal/kg DM for WB, respectively. The net availability of AME of corn tended to be numerically higher than DDGS and WB (p = 0.096). In conclusion, compared with corn, the energy values of DDGS and WB were overestimated when expressed on an AME basis.
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Affiliation(s)
- D Ning
- State Key lab of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - J M Yuan
- State Key lab of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Y W Wang
- State Key lab of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Y Z Peng
- State Key lab of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Y M Guo
- State Key lab of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
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Ning D, Guo YM, Wang YW, Peng YZ. Earlier Metabolizable Energy Intake Level Influences Heat Production during a Following 3-Day Fast in Laying Hens. Asian-Australas J Anim Sci 2014; 26:558-63. [PMID: 25049823 PMCID: PMC4093384 DOI: 10.5713/ajas.2012.12566] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Revised: 12/11/2012] [Accepted: 12/01/2012] [Indexed: 11/27/2022]
Abstract
The present study was conducted to estimate energy requirements for maintenance in laying hens by using indirect calorimetry and energy balance. A total of 576 28-wk-old Nongda-3 laying hens with dwarf gene were randomly allocated into four ME intake levels (86.57, 124.45, 166.63 and 197.20 kcal/kg body weight (BW)(0.75) per d) with four replicates each. After a 4 d adaptation period, 36 hens from one replicate were maintained in one of the two respiration chambers to measure the heat production (HP) for 3 d during the feeding period and subsequent 3 d fast. Metabolizable energy (ME) intake was partitioned between heat increment (HI), HP associated with activity, fasting HP (FHP) and retained energy (RE). The equilibrium FHP may provide an estimate of NE requirements for maintenance (NEm). Results showed that HP, HI and RE in the fed state increased with ME intake level (p<0.05). Based on the regression of HP on ME intake, the estimated ME requirements for maintenance (MEm) was 113.09 kcal/kg BW(0.75) per d when ME intake equals HP. The FHP was decreased day by day with the lowest value on the third day of starvation. Except for lowest ME intake level, the FHP increased with ME intake level on the first day of starvation (p<0.05). The FHP at the two higher ME intake levels were greater than that at the two lower ME intake levels (p<0.05) but no difference was found between the two lower ME intake levels. Linear regression of HP from the fed state to zero ME intake yielded a value of 71.02 kcal/kg BW(0·75) per d, which is higher than the extrapolated FHP at zero ME intake (60.78, 65.23 and 62.14 kcal/kg BW(0.75) per d for the first, second and third day of fasting, respectively). Fasting time, lighting schedules, calculation methods and duration of adaptation of hens to changes in ME intake level should be properly established when using indirect calorimetry technique to estimate dietary NE content, MEm and NEm for laying hens.
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Affiliation(s)
- D Ning
- State Key lab of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Y M Guo
- State Key lab of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Y W Wang
- State Key lab of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Y Z Peng
- State Key lab of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
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Wang YW, Ning D, Peng YZ, Guo YM. Effects of Dietary L-carnitine Supplementation on Growth Performance, Organ Weight, Biochemical Parameters and Ascites Susceptibility in Broilers Reared Under Low-temperature Environment. Asian-Australas J Anim Sci 2014; 26:233-40. [PMID: 25049781 PMCID: PMC4093155 DOI: 10.5713/ajas.2012.12407] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Revised: 10/05/2012] [Accepted: 09/28/2012] [Indexed: 02/01/2023]
Abstract
The objective of this study was to investigate the effects of L-carnitine on growth performance, organ weight, biochemical parameters of blood, heart and liver, and ascites susceptibility of broilers at different ages reared under a low-temperature environment. A total of 420 1-d-old male Ross 308 broilers were randomly assigned to two dietary treatments with fifteen replicates of fourteen broilers each. Treatment diets consisted of L-carnitine supplementation at levels of 0 and 100 mg/kg. At 11-d of age, low temperature stress was used to increase ascites susceptibility. Blood, heart and liver samples were collected at different ages for analysis of boichemical parameters. The results showed that, there was no significant difference in growth performance with L-carnitine supplementation, but the mortality due to ascites was significantly decreased. Dietary L-carnitine supplementation significantly reduced heart index (HI) and ascites heart index (AHI) on d 21, lung index (LUI) on d 35 and liver index (LI) on d 42. The broilers fed diets containing L-carnitine had significantly lower red blood cell counts (RBC), hemoglobin (HGB) concentration and hematocrit (HCT) on d 42. Dietary L-carnitine supplementation significantly reduced malondialdehyde (MDA) content of heart tissue on d 21 and 35, and significantly increased total superoxide dismutase (T-SOD) and Glutathione peroxidase (GSH-Px) activity of the heart on d 21 and 42. L-carnitine supplementation significantly reduced serum triglyceride (TG) content on d 28 and 35 and serum glucose (GLU) on d 35 and 42, and significantly increased serum total protein (TP) and globulin (GLO) content on d 42. L-carnitine supplementation significantly enhanced liver succinodehydrogenase (SDH), malic dehydrogenase (MDH) and Na+-K+-ATPase activity on d 28, and tended to reduce the lactic acid (LD) level of liver on d 35 (p = 0.06). L-carnitine supplementation significantly reduced serum uric acid (UA) content on d 28, 35 and 42. Based on the current results, it can be concluded that dietary L-carnitine supplementation reduced organ index, red blood cell counts and hematocrit, enhanced antioxidative capacity of the heart, enhanced liver enzymes activity involved in tricarboxylic acid cycle, and reduced serum glucose and triglyceride. Therefore, it is suggested that L-carnitine can potentially reduce susceptibility and mortality due to ascites.
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Affiliation(s)
- Y W Wang
- State Key Lab of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - D Ning
- State Key Lab of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Y Z Peng
- State Key Lab of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Y M Guo
- State Key Lab of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
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Peng YZ, Wang YW, Ning D, Guo YM. Changes of haematic parameters, redox status and mitochondrial complex activity in the heart and liver of broilers fed with different density diets under low ambient temperature. Avian Pathol 2013; 42:327-34. [DOI: 10.1080/03079457.2013.800941] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Zhu Y, Ning D, Wang F, Liu C, Xu Y, Jia X, Zhu D. Effect of thyroxine on munc-18 and syntaxin-1 expression in dorsal hippocampus of adult-onset hypothyroid rats. Eur J Histochem 2012. [PMID: 22688303 PMCID: PMC3428971 DOI: 10.4081/ejh.2012.e22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Adult-onset hypothyroidism induces a variety of impairments on hippocampus-dependent neurocognitive functioningin which many synaptic proteins in hippocampus neurons are involved. Here, we observed the effect of adult-onset hypothyroidism on the expression of syntaxin-1 and munc-18 in the dorsal hippocampus and whether the altered proteins could be restored by levothyroxine (T4) treatment. All rats were separated into 4 groups randomly: hypothyroid group, 5 μg T4/100 g body weight (BW) treated group, 20 μg T4/100g BW treated group and control group. The radioimmunoassay kits were applied to assay the levels of serum T3 and T4, and the levels of syntaxin-1 and munc-18 in hippocampus were assessed by immunohistochemistry and Western blot. Both analysis corroborated that syntaxin-1 in the hypothyroid group was significantly higher. Munc-18 was lower in four layers of CA3 and dentate gyrus by immunohistochemistry. After two weeks of treatment with 5 μg T4/100g BW for hypothyroidism, syntaxin-1 levels were completely restored, whereas the recovery of munc-18 only located in two of the four impaired layers. Twenty μg T4/100g BW treatment normalized munc-18 levels. These data suggested that adult-onset hypothyroidism induced increment of syntaxin-1 and decrement of munc-18 in the dorsal hippocampus, which could be restored by T4 treatment. Larger dosage of T4 caused more effective restorations.
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Affiliation(s)
- Y. Zhu
- Department of Endocrinology, Anhui Geriatric Institute, the First Affiliated Hospital of Anhui Medical University, Hefei
| | - D. Ning
- Department of Endocrinology, Anhui Geriatric Institute, the First Affiliated Hospital of Anhui Medical University, Hefei
| | - F. Wang
- Department of Endocrinology, Anhui Geriatric Institute, the First Affiliated Hospital of Anhui Medical University, Hefei
| | - C. Liu
- Department of Endocrinology, Anhui Geriatric Institute, the First Affiliated Hospital of Anhui Medical University, Hefei
| | - Y. Xu
- Department of Endocrinology, Anhui Geriatric Institute, the First Affiliated Hospital of Anhui Medical University, Hefei
| | - X. Jia
- Comprehensive Laboratory, College of Basic Medicine, Anhui Medical University, Hefei, China
| | - D. Zhu
- Department of Endocrinology, Anhui Geriatric Institute, the First Affiliated Hospital of Anhui Medical University, Hefei
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Zhu Y, Ning D, Wang F, Liu C, Xu Y, Jia X, Zhu D. Effect of thyroxine on munc-18 and syntaxin-1 expression in dorsal hippocampus of adult-onset hypothyroid rats. Eur J Histochem 2012; 56:e22. [PMID: 22688303 DOI: 10.4081/ejh.2012.22] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2011] [Revised: 12/05/2011] [Accepted: 01/12/2012] [Indexed: 12/11/2022] Open
Abstract
Adult-onset hypothyroidism induces a variety of impairments on hippocampus-dependent neurocognitive functioningin which many synaptic proteins in hippocampus neurons are involved. Here, we observed the effect of adult-onset hypothyroidism on the expression of syntaxin-1 and munc-18 in the dorsal hippocampus and whether the altered proteins could be restored by levothyroxine (T4) treatment. All rats were separated into 4 groups randomly: hypothyroid group, 5 μg T4/100 g body weight (BW) treated group, 20 μg T4/100g BW treated group and control group. The radioimmunoassay kits were applied to assay the levels of serum T3 and T4, and the levels of syntaxin-1 and munc-18 in hippocampus were assessed by immunohistochemistry and Western blot. Both analysis corroborated that syntaxin-1 in the hypothyroid group was significantly higher. Munc-18 was lower in four layers of CA3 and dentate gyrus by immunohistochemistry. After two weeks of treatment with 5 μg T4/100g BW for hypothyroidism, syntaxin-1 levels were completely restored, whereas the recovery of munc-18 only located in two of the four impaired layers. Twenty μg T4/100g BW treatment normalized munc-18 levels. These data suggested that adult-onset hypothyroidism induced increment of syntaxin-1 and decrement of munc-18 in the dorsal hippocampus, which could be restored by T4 treatment. Larger dosage of T4 caused more effective restorations.
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Affiliation(s)
- Y Zhu
- Department of Endocrinology, Anhui Geriatric Institute, the First Affiliated Hospital of Anhui Medical University, Hefei, China
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Ning D, Leng X, Li Q, Xu W. Surface-displayed VP28 on Bacillus subtilis spores induce protection against white spot syndrome virus in crayfish by oral administration. J Appl Microbiol 2011; 111:1327-36. [PMID: 21933311 DOI: 10.1111/j.1365-2672.2011.05156.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
AIM Surface-displayed heterologous antigens on Bacillus subtilis spores can induce the vertebrate animals tested to generate local and systematic immune response through oral immunization. Here, the protection potential of the recombinant spores displaying the VP28 protein of white spot syndrome virus (WSSV) was investigated in the invertebrate crayfish (Cambarus clarkii). METHODS AND RESULTS The VP28 protein was successfully displayed on the surfaces of B. subtilis spores using CotB or CotC as a fusion partner. Crayfish were administrated orally by feeding the feed pellets coated with B. subtilis spores for 7 days and immediately followed by WSSV challenge. Oral administration of either spores expressing CotB-VP28 or CotC-VP28 resulted in significantly higher relative survival rates of 37.9 and 44.8% compared with the crayfish orally administrated with the spores nonexpressing VP28 (10.3% relative survival rate). When challenges were separately conducted at 7 and 21 days after oral administration, the relative survival rates increased to 46.4 and 50% at 7 days post-oral administration, but decreased to 30 and 33.3% at 21 days after oral administration. CONCLUSION These evidences indicate that the surface-displayed VP28 on B. subtilis spore could induce protection of crayfish against WSSV via oral administration. SIGNIFICANCE AND IMPACT OF THE STUDY This is the first report to use the spore surface display system to deliver orally a heterologous antigen in an aquatic invertebrate animal, crayfish. The results presented here suggest that the spore-displayed VP28 might be suitable for an oral booster vaccine on prevention of WSSV infection in shrimp farming.
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Affiliation(s)
- D Ning
- School of Environment, Jiangsu University, Zhenjiang, China.
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