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Tanaka K, Collins S, Polkoff K, Fellner V. Inhibiting methanogenesis by targeting thermodynamics and enzymatic reactions in mixed cultures of rumen microbes in vitro. Front Microbiol 2024; 15:1322207. [PMID: 39206376 PMCID: PMC11349738 DOI: 10.3389/fmicb.2024.1322207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 07/17/2024] [Indexed: 09/04/2024] Open
Abstract
Mitigation of enteric methane (CH4) emissions from ruminant livestock represents an opportunity to improve the sustainability, productivity, and profitability of beef and dairy production. Ruminal methanogenesis can be mitigated via two primary strategies: (1) alternative electron acceptors and (2) enzymatic inhibition of methanogenic pathways. The former utilizes the thermodynamic favorability of certain reactions such as nitrate/nitrite reduction to ammonia (NH3) while the latter targets specific enzymes using structural analogs of CH4 and methanogenic cofactors such as bromochloromethane (BCM). In this study, we investigated the effects of four additives and their combinations on CH4 production by rumen microbes in batch culture. Sodium nitrate (NaNO3), sodium sulfate (Na2SO4), and 3-nitro-1-propionate (3NPA) were included as thermodynamic inhibitors, whereas BCM was included as a enzymatic inhibitor. Individual additives were evaluated at three levels of inclusion in experiments 1 and 2. Highest level of each additive was used to determine the combined effect of NaNO3 + Na2SO4 (NS), NS + 3NPA (NSP), and NSP + BCM (NSPB) in experiments 3 and 4. Experimental diets were high, medium, and low forage diets (HF, MF, and LF, respectively) and consisted of alfalfa hay and a concentrate mix formulated to obtain the following forage to concentrate ratios: 70:30, 50:50, and 30:70, respectively. Diets with additives were placed in fermentation culture bottles and incubated in a water bath (39°C) for 6, 12, or 24h. Microbial DNA was extracted for 16S rRNA and ITS gene amplicon sequencing. In experiments 1 and 2, CH4 concentrations in control cultures decreased in the order of LF, MF, and HF diets, whereas in experiments 3 and 4, CH4 was highest in MF diet followed by HF and LF diets. Culture pH and NH3 in the control decreased in the order of HF, MF, to LF as expected. NaNO3 decreased (p < 0.001) CH4 and butyrate and increased acetate and propionate (p < 0.03 and 0.003, respectively). Cultures receiving NaNO3 had an enrichment of microorganisms capable of nitrate and nitrite reduction. 3NPA also decreased CH4 at 6h with no further decrease at 24 h (p < 0.001). BCM significantly inhibited methanogenesis regardless of inclusion levels as well as in the presence of the thermodynamic inhibitors (p < 0.001) while enriching succinate producers and assimilators as well as propionate producers (p adj < 0.05). However, individual inclusion of BCM decreased total short chain fatty acid (SCFA) concentrations (p < 0.002). Inhibition of methanogenesis with BCM individually and in combination with the other additives increased gaseous H2 concentrations (p < 0.001 individually and 0.028 in combination) while decreasing acetate to propionate ratio (p < 0.001). Only the cultures treated with BCM in combination with other additives significantly (padj < 0.05) decreased the abundance of Methanobrevibacter expressed as log fold change. Overall, the combination of thermodynamic and enzymatic inhibitors presented a promising effect on ruminal fermentation in-vitro, inhibiting methanogenesis while optimizing the other fermentation parameters such as pH, NH3, and SCFAs. Here, we provide a proof of concept that the combination of an electron acceptor and a methane analog may be exploited to improve microbial efficiency via methanogenesis inhibition.
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Affiliation(s)
- Kairi Tanaka
- Department of Animal Science, North Carolina State University, Raleigh, NC, United States
- Department of Plant and Microbial Biology, North Carolina State University, Raleigh, NC, United States
| | - Scott Collins
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC, United States
| | - Kathryn Polkoff
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC, United States
| | - Vivek Fellner
- Department of Animal Science, North Carolina State University, Raleigh, NC, United States
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Cui H, Cai J, He H, Ding S, Long Y, Lin S. Tailored chitosan/glycerol micropatterned composite dressings by 3D printing for improved wound healing. Int J Biol Macromol 2024; 255:127952. [PMID: 37951437 DOI: 10.1016/j.ijbiomac.2023.127952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 09/26/2023] [Accepted: 10/30/2023] [Indexed: 11/14/2023]
Abstract
Wound infection control is a primary clinical concern nowadays. Various innovative solutions have been developed to fabricate adaptable wound dressings with better control of infected wound healing. This work presents a facile approach by leveraging 3D printing to fabricate chitosan/glycerol into composite dressings with tailored micropatterns to improve wound healing. The bioinks of chitosan/glycerol were investigated as suitable for 3D printing. Then, three tailored micropatterns (i.e., sheet, strip, and mesh) with precise geometry control were 3D printed onto a commercial dressing to fabricate the micropatterned composite dressings. In vitro and in vivo studies indicate that these micropatterned dressings could speed up wound healing due to their increased water uptake capacity (up to ca. 16-fold@2 min), benign cytotoxicity (76.7 % to 90.4 % of cell viability), minor hemolytic activity (<1 %), faster blood coagulation effects (within 76.3 s), low blood coagulation index (14.5 % to 18.7 % @ 6 min), enhanced antibacterial properties (81.0 % to 86.1 % against S. aureus, 83.7 % to 96.5 % against E. coli), and effective inhibition of wound inflammation factors of IL-1β and TNF-α. Such tailored micropatterned composite dressing is facile to obtain, highly reproducible, and cost-efficient, making it a promising implication for improved and personalized contaminated wound healing.
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Affiliation(s)
- Haoran Cui
- Systems Engineering Institute, Academy of Military Sciences, Tianjin 300161, People's Republic of China
| | - Junjie Cai
- Systems Engineering Institute, Academy of Military Sciences, Tianjin 300161, People's Republic of China; Bethune International Peace Hospital, Shijiazhuang 050051, People's Republic of China
| | - Hanjiao He
- Guizhou University of Traditional Chinese Medicine, Guiyang 550025, People's Republic of China
| | - Sheng Ding
- Systems Engineering Institute, Academy of Military Sciences, Tianjin 300161, People's Republic of China
| | - Yi Long
- Guizhou University of Traditional Chinese Medicine, Guiyang 550025, People's Republic of China.
| | - Song Lin
- Systems Engineering Institute, Academy of Military Sciences, Tianjin 300161, People's Republic of China.
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Son Phan K, Thu Huong Le T, Minh Nguyen T, Thu Trang Mai T, Ha Hoang P, Thang To X, Trung Nguyen T, Dang Pham K, Thu Ha P. Co‐delivery of Doxycycline, Florfenicol and Silver Nanoparticles using Alginate/Chitosan Nanocarriers. ChemistrySelect 2022. [DOI: 10.1002/slct.202201954] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Ke Son Phan
- Institute of Materials Science Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Road, Cau Giay District Hanoi Vietnam
| | - Thi Thu Huong Le
- Institute of Materials Science Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Road, Cau Giay District Hanoi Vietnam
- Vietnam National University of Agriculture Trau Quy, Gia Lam District Hanoi Vietnam
| | - Thi Minh Nguyen
- Institute of Biotechnology Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Road, Cau Giay District Hanoi Vietnam
| | - Thi Thu Trang Mai
- Institute of Materials Science Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Road, Cau Giay District Hanoi Vietnam
| | - Phuong Ha Hoang
- Institute of Biotechnology Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Road, Cau Giay District Hanoi Vietnam
| | - Xuan Thang To
- Institute of Materials Science Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Road, Cau Giay District Hanoi Vietnam
| | - Thanh Trung Nguyen
- Vietnam National University of Agriculture Trau Quy, Gia Lam District Hanoi Vietnam
| | - Kim Dang Pham
- Vietnam National University of Agriculture Trau Quy, Gia Lam District Hanoi Vietnam
| | - Phuong Thu Ha
- Institute of Materials Science Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Road, Cau Giay District Hanoi Vietnam
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Park K, Jo Y, Ghassemi Nejad J, Lee J, Lee H. Evaluation of nutritional value of Ulva sp. and Sargassum horneri as potential eco-friendly ruminants feed. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102706] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Thuekeaw S, Angkanaporn K, Nuengjamnong C. Microencapsulated basil oil (Ocimum basilicum Linn.) enhances growth performance, intestinal morphology, and antioxidant capacity of broiler chickens in the tropics. Anim Biosci 2022; 35:752-762. [PMID: 34991219 PMCID: PMC9065782 DOI: 10.5713/ab.21.0299] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 10/08/2021] [Accepted: 11/16/2021] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVE Microencapsulation is a technique to improve stability, bioavailability, and controlled release of active ingredients at a target site. This experiment aimed to investigate the effects of microencapsulated basil oil (MBO) on growth performance, apparent ileal digestibility (AID), jejunal histomorphology, bacterial population as well as antioxidant capacity of broiler chickens in a tropical climate. METHODS A total of 288 one-day-old female broilers (Ross 308) were randomly allocated into 4 groups (6 replicates of 12 birds), based on a completely randomized design. Dietary treatments were as follows: i) basal diet (NC), ii) basal diet with avilamycin at 10 ppm (PC), iii) basal diet with free basil oil (FBO) at 500 ppm, and iv) basal diet with MBO at 500 ppm, respectively. RESULTS Dietary supplementation of MBO improved average daily gain, and feed conversion ratio of broilers throughout the 42-d trial period (p<0.05), whereas MBO did not affect average daily feed intake compared with NC group. The broilers fed MBO diet exhibited a greater AID of crude protein and gross energy compared with those in other groups (p<0.05). Lactobacillus spp. and Escherichia coli populations were not affected by feeding dietary treatments. Both FBO and MBO had positive effects on jejunal villus height (VH), villus height to crypt depth ratio (VH:CD) and villus surface area of broilers compared to NC and PC groups (p<0.05). Superoxide dismutase level in the duodenal mucosa of MBO group was significantly increased (p<0.01), whereas malondialdehyde level was significantly decreased (p<0.01). CONCLUSION Microencapsulation could be considered as a promising driver of the basil oil efficiency, consequently MBO at 500 ppm could be potentially used as a feed additive for improvement of intestinal integrity and nutrient utilization, leading to better performance of broiler chickens.
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Affiliation(s)
- Sureerat Thuekeaw
- Department of Animal Husbandry, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330,
Thailand
| | - Kris Angkanaporn
- Department of Veterinary Physiology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330,
Thailand
| | - Chackrit Nuengjamnong
- Department of Animal Husbandry, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330,
Thailand
- Food Risk Hub, Research Unit of Chulalongkorn University, Bangkok 10330,
Thailand
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Rajendran D, Ezhuthupurakkal PB, Lakshman R, Gowda NKS, Manimaran A, Rao SBN. Application of encapsulated nano materials as feed additive in livestock and poultry: a review. Vet Res Commun 2022; 46:315-328. [DOI: 10.1007/s11259-022-09895-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 01/30/2022] [Indexed: 10/19/2022]
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Thuekeaw S, Angkanaporn K, Chirachanchai S, Nuengjamnong C. Dual pH responsive via double - layered microencapsulation for controlled release of active ingredients in simulated gastrointestinal tract: A model case of chitosan-alginate microcapsules containing basil oil (Ocimum basilicum Linn.). Polym Degrad Stab 2021. [DOI: 10.1016/j.polymdegradstab.2021.109660] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Hashem NM, Gonzalez-Bulnes A. Nanotechnology and Reproductive Management of Farm Animals: Challenges and Advances. Animals (Basel) 2021; 11:1932. [PMID: 34209536 PMCID: PMC8300313 DOI: 10.3390/ani11071932] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 06/21/2021] [Accepted: 06/24/2021] [Indexed: 12/12/2022] Open
Abstract
Reproductive efficiency of farm animals has central consequences on productivity and profitability of livestock farming systems. Optimal reproductive management is based on applying different strategies, including biological, hormonal, nutritional strategies, as well as reproductive disease control. These strategies should not only guarantee sufficient reproductive outcomes but should also comply with practical and ethical aspects. For example, the efficiency of the biological- and hormonal-based reproductive strategies is mainly related to several biological factors and physiological status of animals, and of nutritional strategies, additional factors, such as digestion and absorption, can contribute. In addition, the management of reproductive-related diseases is challenged by the concerns regarding the intensive use of antibiotics and the development of antimicrobial resistant strains. The emergence of nanotechnology applications in livestock farming systems may present innovative and new solutions for overcoming reproductive management challenges. Many drugs (hormones and antibiotics), biological molecules, and nutrients can acquire novel physicochemical properties using nanotechnology; the main ones are improved bioavailability, higher cellular uptake, controlled sustained release, and lower toxicity compared with ordinary forms. In this review, we illustrate advances in the most common reproductive management strategies by applying nanotechnology, considering the current challenges of each strategy.
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Affiliation(s)
- Nesrein M. Hashem
- Department of Animal and Fish Production, Faculty of Agriculture (El-Shatby), Alexandria University, Alexandria 21545, Egypt
| | - Antonio Gonzalez-Bulnes
- Departamento de Produccion y Sanidad Animal, Facultad de Veterinaria, Universidad CardenalHerrera-CEU, CEU Universities, C/Tirant lo Blanc, 7, 46115 Alfara del Patriarca, Valencia, Spain
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Abdellatif AAH, Ibrahim MA, Amin MA, Maswadeh H, Alwehaibi MN, Al-Harbi SN, Alharbi ZA, Mohammed HA, Mehany ABM, Saleem I. Cetuximab Conjugated with Octreotide and Entrapped Calcium Alginate-beads for Targeting Somatostatin Receptors. Sci Rep 2020; 10:4736. [PMID: 32170176 PMCID: PMC7069942 DOI: 10.1038/s41598-020-61605-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 02/29/2020] [Indexed: 12/25/2022] Open
Abstract
There is a need to formulate oral cetuximab (CTX) for targeting colorectal cancer, which is reported to express somatostatin receptors (SSTRs). Therefore, coating CTX with a somatostatin analogue such as octreotide (OCT) is beneficial. Alginate was used to coat CTX to facilitate delivery to the gastrointestinal tract (GIT). This study aimed to deliver CTX conjugated with OCT in the form of microparticles as a GIT-targeted SSTR therapy. Both CTX and OCT were conjugated using a solvent evaporation method and the conjugated CTX-OCT was then loaded onto Ca-alginate-beads (CTX-OCT-Alg), which were characterized for drug interactions using differential scanning calorimetry (DSC), and Fourier transform infrared spectra (FTIR). Moreover, the morphology of formulated beads was examined using a scanning electron microscope (SEM). The drug content and release profile were studied using UV spectroscopy. Finally, in vitro cytotoxicity of all compounds was evaluated. The results showed homogenous conjugated CTX-OCT with a diameter of 0.4 mm. DSC showed a delay in the OCT peak that appeared after 200 °C due to small polymer interaction that shifted the OCT peak. Moreover, FTIR showed no prominent interaction. SEM showed clear empty cavities in the plain Ca-alginate-beads, while CTX-OCT-Alg showed occupied beads without cavities. CTX-OCT-Alg had a negligible release in 0.1 N HCl, while the CTX-OCT was completely released after 300 min in phosphate buffer pH 7.4. All formulations showed good antiproliferative activity compared with free drugs. The formulated CTX-OCT-Alg are a promising platform for targeting colorectal cancer through GIT.
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Affiliation(s)
- Ahmed A H Abdellatif
- Department of Pharmaceutics, College of Pharmacy, Qassim University, Buraydah, 51452, Kingdom of Saudi Arabia.
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Al-Azhar University, Assiut, 71524, Egypt.
| | - Mohamed A Ibrahim
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Al-Azhar University, Assiut, 71524, Egypt
- Kayyali Chair for Pharmaceutical Industries, Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Mohammed A Amin
- Department of Pharmaceutics, College of Pharmacy, Qassim University, Buraydah, 51452, Kingdom of Saudi Arabia
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Al-Azhar University, Assiut, 71524, Egypt
| | - Hamzah Maswadeh
- Department of Pharmaceutics, College of Pharmacy, Qassim University, Buraydah, 51452, Kingdom of Saudi Arabia
| | - Muhammed N Alwehaibi
- Pharm. D. Student, College of Pharmacy, Qassim University, Buraydah, 51452, Kingdom of Saudi Arabia
| | - Sultan N Al-Harbi
- Pharm. D. Student, College of Pharmacy, Qassim University, Buraydah, 51452, Kingdom of Saudi Arabia
| | - Zayed A Alharbi
- Pharm. D. Student, College of Pharmacy, Qassim University, Buraydah, 51452, Kingdom of Saudi Arabia
| | - Hamdoon A Mohammed
- Department of Medicnal Chemistry and Pharmacognosy, College of Pharmacy, Qassim University, Buraydah, 51452, Kingdom of Saudi Arabia
- Department of Pharmacognosy, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt
| | - Ahmed B M Mehany
- Department of Zoology, Faculty of Science, Al-Azhar University, Cairo, Egypt
| | - Imran Saleem
- School of Pharmacy & Biomolecular Sciences, Liverpool John Moores University James Parsons Building, Liverpool, UK
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