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Negm AE, Abo-Raya MH, Gabr AM, Baloza SH, El-Nokrashy A, Prince A, Arana D, Wang Y, Abdelazeem S, Albadrani GM, Al-Ghadi MQ, Abdeen A, Shukry M, El-Sayed Khalafallah MM. Effects of phytase enzyme supplementation on growth performance, intestinal morphology and metabolism in Nile tilapia (Oreochromis niloticus). J Anim Physiol Anim Nutr (Berl) 2024. [PMID: 38356017 DOI: 10.1111/jpn.13939] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 01/25/2024] [Accepted: 01/30/2024] [Indexed: 02/16/2024]
Abstract
Phytase is crucial in enhancing the bioavailability and release of phosphorus and other nutrients bound to phytic acid, making them more bioavailable for animal absorption. This study was carried out to inspect the effect of supplementing low phosphorus (P) diet with di-calcium phosphate (DCP) and liquid phytase enzyme (LP), which contains 1500 FTU/kg, on growth performance, intestinal morphometry, proximate body chemical composition, blood profile, immunity status, liver mitochondrial enzyme activities, the expression response and economic returns of Nile tilapia (Oreochromis niloticus). Three triplicate groups of fish (initial weight 5.405 ± 0.045 g, N = 90) were fed on three different diets for 90 days. The first was a control diet with zero DCP; the second was a control diet supplemented with 0.71% DCP; the third was a control diet supplemented with 0.03% LP. The groups were designated as CG, DCP and LP, respectively. Results showed that LP induced considerable improvements (p < 0.05) in FBW, body weight gain, weight gain rate, specific growth rate, HIS, viscero-somatic index, spleen-somatic index, feed conversion ratio, blood parameters and the histomorphometry assessment of intestinal villi absorptive capacity, compared with the other groups. Also, whole-body protein and lipid contents pointedly (p < 0.05) increased by LP, compared with the DCP group. A positive response (p < 0.05) to the phytase enzyme was noted in complexes I, III and IV of the mitochondrial liver complex enzyme activity. Likewise, the relative gene expression levels of (GHr-1, IGF-1, FAS and LPL) were notably (p < 0.05) upregulated by phytase enzyme, associated with DCP and control groups. Further, phytase recorded the highest total return and profit percentage. It can be concluded that Nile tilapia benefits from using phytase enzyme 1500 FTU/kg at 0.03% without adding DCP in terms of good performance and profits.
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Affiliation(s)
- Ahmed E Negm
- Department of Aquaculture, Faculty of Aquatic and Fisheries Sciences, Kafrelsheikh University, Kafrelsheikh, Egypt
| | - Mohamed H Abo-Raya
- Department of Aquaculture, Faculty of Aquatic and Fisheries Sciences, Kafrelsheikh University, Kafrelsheikh, Egypt
| | - Asmaa M Gabr
- Department of Aquaculture, Faculty of Aquatic and Fisheries Sciences, Kafrelsheikh University, Kafrelsheikh, Egypt
| | - Samar H Baloza
- Genetic and Genetic Engineering, Animal Wealth Development Department, Faculty of Veterinary Medicine, Benha University, Toukh, Egypt
| | - Asmaa El-Nokrashy
- Department of Aquaculture, Faculty of Aquatic and Fisheries Sciences, Kafrelsheikh University, Kafrelsheikh, Egypt
| | - Abdelbary Prince
- Department of Biochemistry, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | | | - Youji Wang
- International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, Shanghai, China
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China
| | - Shimaa Abdelazeem
- Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt
| | - Ghadeer M Albadrani
- Department of Biology, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Muath Q Al-Ghadi
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Ahmed Abdeen
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Benha University, Toukh, Egypt
| | - Mustafa Shukry
- Department of Physiology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh, Egypt
| | - Malik M El-Sayed Khalafallah
- Department of Aquaculture, Faculty of Aquatic and Fisheries Sciences, Kafrelsheikh University, Kafrelsheikh, Egypt
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Zeraouli G, Gatti G, Longman A, Pérez-Hernández JA, Arana D, Batani D, Jakubowska K, Volpe L, Roso L, Fedosejevs R. Development of an adjustable Kirkpatrick-Baez microscope for laser driven x-ray sources. Rev Sci Instrum 2019; 90:063704. [PMID: 31255027 DOI: 10.1063/1.5091103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 05/31/2019] [Indexed: 06/09/2023]
Abstract
A prototype of a highly adjustable Kirkpatrick-Baez (KB) microscope has been designed, built, and tested in a number of laser driven x-ray experiments using the high power (200 TW) VEGA-2 laser system of the Spanish Centre for Pulsed Lasers (CLPU). The presented KB version consists of two, perpendicularly mounted, 500 μm thick silicon wafers, coated with a layer of platinum, a few tens of nanometers thick. Unlike the usual millimeter thick glass substrate, this design allows for a larger bending flexibility and large adjustment range. According to simulations, this KB microscope offers broadband multikiloelectron volt reflection spectra (1 eV-20 keV), allowing more spectral tunability than conventional Bragg crystals. In addition to be vacuum compatible, this prototype is characterized by a relatively small size (21 cm × 31 cm × 27 cm) and permits remote control and modification both of the radii of curvature (down to 10 m) and of the grazing incidence angle (up to 60 mrad). A few examples of focusing performance tests and experimental results are discussed.
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Affiliation(s)
- G Zeraouli
- CLPU, Centro de Laseres Pulsados, Building M5, Science Park, Calle Adaja 8, 37185 Villamayor, Salamanca, Spain
| | - G Gatti
- CLPU, Centro de Laseres Pulsados, Building M5, Science Park, Calle Adaja 8, 37185 Villamayor, Salamanca, Spain
| | - A Longman
- University of Alberta, 116 St 85 Ave., Edmonton, Alberta T6G 2R3, Canada
| | - J A Pérez-Hernández
- CLPU, Centro de Laseres Pulsados, Building M5, Science Park, Calle Adaja 8, 37185 Villamayor, Salamanca, Spain
| | - D Arana
- CLPU, Centro de Laseres Pulsados, Building M5, Science Park, Calle Adaja 8, 37185 Villamayor, Salamanca, Spain
| | - D Batani
- CELIA, Centre des Laser Intenses et Applications, 351, Cours de la Libération, F-33405 Talence Cedex, France
| | - K Jakubowska
- IPPLM, Institute of Plasma Physics and Laser Microfusion, 23 Hery Str., 01-497 Warsaw, Poland
| | - L Volpe
- CLPU, Centro de Laseres Pulsados, Building M5, Science Park, Calle Adaja 8, 37185 Villamayor, Salamanca, Spain
| | - L Roso
- CLPU, Centro de Laseres Pulsados, Building M5, Science Park, Calle Adaja 8, 37185 Villamayor, Salamanca, Spain
| | - R Fedosejevs
- University of Alberta, 116 St 85 Ave., Edmonton, Alberta T6G 2R3, Canada
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Arana D, Camargo PO, Guimarães GN. Hybrid Geoid Model: Theory and Application in Brazil. AN ACAD BRAS CIENC 2017; 89:1943-1959. [PMID: 28954175 DOI: 10.1590/0001-3765201720160802] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 03/02/2017] [Indexed: 11/22/2022] Open
Abstract
Determination of the ellipsoidal height by Global Navigation Satellite Systems (GNSS) is becoming better known and used for purposes of leveling with the aid of geoid models. However, the disadvantage of this method is the quality of the geoid models, which degrade heights and limit the application of the method. In order to provide better quality in transforming height using GNSS leveling, this research aims to develop a hybridization methodology of gravimetric geoid models EGM08, MAPGEO2015 and GEOIDSP2014 for the State of São Paulo, providing more consistent models with GNSS technology. Radial Basis Function (RBF) neural networks were used to obtain the corrector surface, based on differences between geoid model undulations and the undulations obtained by GNSS tracking in benchmarks. The experiments showed that the most suitable interpolation for correction modeling is the linear RBF. Checkpoints indicate that the geoid hybrid models feature root mean square deviation ± 0.107, ± 0.104 and ± 0.098 m, respectively. The results shows an improvement of 30 to 40% in consistencies compared with the gravimetric geoids, providing users with better quality in transformation of geometric to orthometric heights.
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Affiliation(s)
- Daniel Arana
- Programa de Pós-Graduação em Ciências Cartográficas, Faculdade de Ciência e Tecnologia, Universidade do Estado de São Paulo/UNESP, Rua Roberto Simonsen, 305, 19060-900 Presidente Prudente, SP, Brazil
| | - Paulo O Camargo
- Programa de Pós-Graduação em Ciências Cartográficas, Faculdade de Ciência e Tecnologia, Universidade do Estado de São Paulo/UNESP, Rua Roberto Simonsen, 305, 19060-900 Presidente Prudente, SP, Brazil.,Departamento de Cartografia, Universidade do Estado de São Paulo/UNESP, Rua Roberto Simonsen, 305, 19060-900 Presidente Prudente, SP, Brazil
| | - Gabriel N Guimarães
- Instituto de Geografia, Universidade Federal de Uberlândia/UFU, Campus Monte Carmelo, Av. Goiás, 2000, 38500-000 Monte Carmelo, MG, Brazil
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Zem G, Mikaelian E, Quinones L, Nwokochah C, Osadi F, Arana D, Barsigian S, Dugyawi J, Alvarado B, Hovakemian G, Lam J, Eskander M, Voldiner M, Garcia S, Nair D, Song J, Tashdjian G, Nazer S, Rashidizand S, Constantino G, Pilikian N, Faretta A, Gekchyan H, Corscadden L, Kelvani M, DeGuzman K, Canta R, Korkounian S, Strelnicova A, Turdjian M, Lay M, Darmali A, Memarian N, Simonyan K, Oghlian L, Oppenheimer SB. Concentration Effects in Identifying Unclumping Reagents. FASEB J 2016. [DOI: 10.1096/fasebj.30.1_supplement.1089.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Gregory Zem
- California State University, NorthridgeNorthridgeCA
| | - E. Mikaelian
- California State University, NorthridgeNorthridgeCA
| | - L. Quinones
- California State University, NorthridgeNorthridgeCA
| | - C. Nwokochah
- California State University, NorthridgeNorthridgeCA
| | - F. Osadi
- California State University, NorthridgeNorthridgeCA
| | - D. Arana
- California State University, NorthridgeNorthridgeCA
| | - S. Barsigian
- California State University, NorthridgeNorthridgeCA
| | - J. Dugyawi
- California State University, NorthridgeNorthridgeCA
| | - B. Alvarado
- California State University, NorthridgeNorthridgeCA
| | | | - J. Lam
- California State University, NorthridgeNorthridgeCA
| | - M. Eskander
- California State University, NorthridgeNorthridgeCA
| | - M. Voldiner
- California State University, NorthridgeNorthridgeCA
| | - S. Garcia
- California State University, NorthridgeNorthridgeCA
| | - D. Nair
- California State University, NorthridgeNorthridgeCA
| | - J. Song
- California State University, NorthridgeNorthridgeCA
| | - G. Tashdjian
- California State University, NorthridgeNorthridgeCA
| | - S. Nazer
- California State University, NorthridgeNorthridgeCA
| | | | | | - N. Pilikian
- California State University, NorthridgeNorthridgeCA
| | - A. Faretta
- California State University, NorthridgeNorthridgeCA
| | - H. Gekchyan
- California State University, NorthridgeNorthridgeCA
| | | | - M Kelvani
- California State University, NorthridgeNorthridgeCA
| | - K. DeGuzman
- California State University, NorthridgeNorthridgeCA
| | - R. Canta
- California State University, NorthridgeNorthridgeCA
| | | | | | - M. Turdjian
- California State University, NorthridgeNorthridgeCA
| | - M Lay
- California State University, NorthridgeNorthridgeCA
| | - A. Darmali
- California State University, NorthridgeNorthridgeCA
| | - N Memarian
- California State University, NorthridgeNorthridgeCA
| | - K. Simonyan
- California State University, NorthridgeNorthridgeCA
| | - L. Oghlian
- California State University, NorthridgeNorthridgeCA
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Eisman B, Alonso-Monge R, Román E, Arana D, Nombela C, Pla J. The Cek1 and Hog1 mitogen-activated protein kinases play complementary roles in cell wall biogenesis and chlamydospore formation in the fungal pathogen Candida albicans. Eukaryot Cell 2006; 5:347-58. [PMID: 16467475 PMCID: PMC1405885 DOI: 10.1128/ec.5.2.347-358.2006] [Citation(s) in RCA: 133] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The Hog1 mitogen-activated protein (MAP) kinase mediates an adaptive response to both osmotic and oxidative stress in the fungal pathogen Candida albicans. This protein also participates in two distinct morphogenetic processes, namely the yeast-to-hypha transition (as a repressor) and chlamydospore formation (as an inducer). We show here that repression of filamentous growth occurs both under serum limitation and under other partially inducing conditions, such as low temperature, low pH, or nitrogen starvation. To understand the relationship of the HOG pathway to other MAP kinase cascades that also play a role in morphological transitions, we have constructed and characterized a set of double mutants in which we deleted both the HOG1 gene and other signaling elements (the CST20, CLA4, and HST7 kinases, the CPH1 and EFG1 transcription factors, and the CPP1 protein phosphatase). We also show that Hog1 prevents the yeast-to-hypha switch independent of all the elements analyzed and that the inability of the hog1 mutants to form chlamydospores is suppressed when additional elements of the CEK1 pathway (CST20 or HST7) are altered. Finally, we report that Hog1 represses the activation of the Cek1 MAP kinase under basal conditions and that Cek1 activation correlates with resistance to certain cell wall inhibitors (such as Congo red), demonstrating a role for this pathway in cell wall biogenesis.
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Affiliation(s)
- B Eisman
- Departamento de Microbiología II, Facultad de Farmacia, Universidad Complutense de Madrid, Plaza de Ramón y Cajal s/n, E-28040 Madrid, Spain
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