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Your search keyword '"Younis, Elsayed M."' showing total 223 results
Start Over Author "Younis, Elsayed M." Publication Type Academic Journals
223 results on '"Younis, Elsayed M."'

7. Efficacy of the dietary Malva parviflora leaves in modulating immune-antioxidant functions, resistance to Candida albicans and Streptococcus agalactiae infection, digestive/absorptive capacity, and growth of Nile tilapia (Oreochromis niloticus)

Author

Abdel Rahman, Afaf N., Reyad, Yasmin A., Elshopakey, Gehad E., Younis, Elsayed M., Abdelwarith, Abdelwahab A., EL-Mageed, Nehal Abd, Kishta, Afaf A., Yaseen, Asmaa, Davies, Simon J., and Ibrahim, Rowida E.

Published
2024
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8. Influence of astaxanthin-enriched Haematococcus pluvialis microalgae on the growth efficacy, immune response, antioxidant capacity, proinflammatory cytokines, and tissue histomorphology of hybrid red tilapia

Author

Eldessouki, Elsayed A. A., Elshopakey, Gehad E., Elbahnaswy, Samia, Shakweer, Medhat S., Abdelwarith, Abdelwahab A., Younis, Elsayed M., Davies, Simon J., Mili, Amira, Abd El-Aziz, Yasmin M., Abdelnour, Sameh A., and Eissa, El-Sayed Hemdan

Published
2024
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10. In-water Bacillus species probiotic improved water quality, growth, hemato-biochemical profile, immune regulatory genes and resistance of Nile tilapia to Aspergillus flavus infection

Author

Eissa, El-Sayed Hemdan, Okon, Ekemini Moses, Abdel-Warith, Abdel-Wahab A., Younis, Elsayed M., Dowidar, Heba A., Elbahnaswy, Samia, Ezzo, Omaima H., Munir, Mohammad Bodrul, Chowdhury, Ahmed Jalal Khan, Abd Elghany, Nadia A., Mahboub, Heba H., Eissa, Moaheda E. H., and Elabd, Hiam

Published
2024
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11. Antagonistic Effect of Zinc Oxide Nanoparticles Dietary Supplementation Against Chronic Copper Waterborne Exposure on Growth, Behavioral, Biochemical, and Gene Expression Alterations of African Catfish, Clarias gariepinus (Burchell, 1822)

Author

Ahmed, Shaimaa A. A., Ibrahim, Rowida E., Younis, Elsayed M., Abdelwarith, Abdelwahab A., Faroh, Khaled Yehia, El Gamal, Samar A., Badr, Shereen, Khamis, Tarek, Mansour, Abdallah Tageldein, Davies, Simon J., and ElHady, Mohamed

Published
2024
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14. Influence of a mixture of oligosaccharides and β-glucan on growth performance, feed efficacy, body composition, biochemical indices, combating Streptococcus iniae infection, and gene expression of Nile tilapia (Oreochromis niloticus)

Author

Eissa, El-Sayed Hemdan, Okon, Ekemini Moses, Abdel-Warith, Abdel-Wahab A., Younis, Elsayed M., Munir, Mohammad Bodrul, Eissa, Hoda A., Ghanem, Sara F., Mahboub, Heba H., Abd Elghany, Nadia A., Dighiesh, Hagar Sedeek, Eissa, Moaheda E. H., and Abd El-Aziz, Yasmin M.

Published
2024
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16. Enhancing impact of dietary nano formulated quercetin on laying performance: egg quality, oxidative stability of stored eggs, intestinal immune and antioxidants related genes expression

Author

Al-Khalaifah, Hanan S., Ibrahim, Doaa, Kamel, Asmaa EL-Sayed, Al-Nasser, Afaf, Abdelwarith, Abdelwahab A., Roushdy, Elshimaa M., Sheraiba, Nagwa I., Shafik, Basant M., El-Badry, Sara M., Younis, Elsayed M., Mamdouh, Maha, Yassin, Engy Mohamed Mohamed, Davies, Simon J., and Kishawy, Asmaa T. Y.

Published
2024
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20. Nano-Bacillus amyloliquefaciens as a dietary intervention in nile tilapia (Oreochromis niloticus): Effects on resistance to Aeromonas hydrophila challenge, immune-antioxidant responses, digestive/absorptive capacity, and growth

Author

Hassanin, Mohammed E., El-Murr, Abdelhakeem, EL-Khattib, Amr R., Abdelwarith, Abdelwahab A., Younis, Elsayed M., Metwally, Mohamed M.M., Ismail, Sameh H., Davies, Simon J., Abdel Rahman, Afaf N., and Ibrahim, Rowida E.

Published
2024
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24. A commercial seaweed extract increases growth performance, immune responses, and related gene expressions in whiteleg shrimp (Litopenaeus vannamei)

Author

Ashour, Mohamed, Al-Souti, Ahmed Said, Mabrouk, Mohamed M., Naiel, Mohammed A.E., Younis, Elsayed M., Abdelwarith, Abdelwahab A., AbdEl-Kader, Marwa F., Abu Husein, Mohammad Shaaban, El saharty, Abeer, Elokaby, Mohamed A., Mansour, Ahmed I.A., El-Bahlol, Ahmed A.A., Ringø, Einar, El-Haroun, Ehab, and Abdelhamid, Ahmed F.

Published
2024
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26. Dietary garden cress (Lepidium sativum) seeds mitigate the effect of aflatoxin B1 contamination on growth, antioxidant status, AFB1 residues, immune response, and tissue architecture of Oreochromis niloticus

Author

El-Houseiny, Walaa, El-Murr, Abd Elhakeem, Abd-Allah, Noura A., Abd-Elhakim, Yasmina M., Abdel-Warith, Abdel-Wahab A., Younis, Elsayed M., Davies, Simon J., Metwally, Mohamed M.M., Nasr, Mai E., Al-Sagheer, Adham A., Hassan, Bayan A., and Elkhadrawey, Basma A.

Published
2024
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29. Artichoke (Cynara scolymus) leaf extract abates the neurotoxic and neurobehavioral outcomes of fluoride in Nile tilapia (Oreochromis niloticus) via balancing oxidative stress, inflammation, apoptosis, and acetylcholinesterase activity

Author

Elsayyad, Asmaa, Reyad, Yasmin A., Elshafey, Basma A., Aziz, Enas K., Metwally, Mohamed M.M., Abd-Elhakim, Yasmina M., Abdel-Warith, Abdel-Wahab A., Younis, Elsayed M., Davies, Simon J., El-Houseiny, Walaa, Arisha, Ahmed H., and Ghetas, Hanan A.

Published
2024
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35. Nelumbo nucifera synthesized selenium nanoparticles modulate the immune-antioxidants, biochemical indices, and pro/anti-inflammatory cytokines pathways in Oreochromis niloticus infected with Aeromonas veronii

Author

Ibrahim, Rowida E., Elshobaky, Gehad, ElHady, Mohamed, Abdelwarith, Abdelwahab A., Younis, Elsayed M., Rhouma, Nasreddin R., Murad, Suzan K., Yassin, Engy Mohamed Mohamed, Khamis, Tarek, Ismail, Sameh H., Davies, Simon J., and Abdel Rahman, Afaf N.

Published
2024
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46. Investigating the impact of nanoemulsion of curcumin‐loaded olive oil on growth performance, feed utilization, immunological responses, and redox status of Litopenaeus vannamei shrimp with emphasis on economic efficiency of supplementation.

Author

Fath El‐Bab, Ahmed F., El‐Ratel, Ibrahim T., Abdel‐Warith, Abdel‐Wahab A., Younis, Elsayed M., Davies, Simon J., and El‐Raghi, Ali Ali

Subjects
WHITELEG shrimp, BLOOD proteins, OXIDANT status, SUSTAINABILITY, LIVER enzymes, DIGESTIVE enzymes
Abstract

The trail aimed to explore the effect of dietary supplementation of curcumin loaded olive oil nanoemulsion (CUR‐OLNE) on growth performance, feed utilization, blood biochemical, redox status, and immune response of Litopenaeus vannamei shrimp, considering the economic efficiency of supplementation. A total of 280 healthy shrimps (3.42 ± 0.02 g) were randomly distributed into five equal groups and were fed diets containing 0 (CUR‐OLNE0), 5(CUR‐OLNE5), 10(CUR‐OLNE10), 15(CUR‐OLNE15) and 20 (CUR‐OLNE20) mg CUR‐OLNE/kg diet, respectively for 16 weeks. Among CUR‐OLNE treated groups, CUR‐OLNE20 showed the highest growth performance and feed utilization traits, including final body weight, specific growth rate, feed conversion ratio, and protein efficiency ratio. Notably, the photomicrographs provided further compelling evidence regarding the potential effect of CUR‐OLNE supplementation on muscle structure and integrity. Compared to the control, the levels of blood protein significantly induced in CUR‐OLNE15 and CUR‐OLNE20 treated groups (p < 0.05). All CUR‐OLNE ‐supplemented groups possessed lower activities of liver enzymes as well as the levels of urea and creatinine compared to the control (p < 0.05). The addition of 20 mg CUR‐OLNE/kg diet decreased the concentrations of cortisol, glucose and triglycerides. The dietary treatment significantly improved the secretion of digestive enzymes, including amylase, lipase, and protease. The lowest levels of Malondialdehyde and the highest levels of total antioxidant capacity, super oxide dismutase, catalase, lysozyme and immunoglobulin M were detected in both of CUR‐OLNE15, and CUR‐OLNE20 treated groups compared to the control (p < 0.05). There were considerable significant effects of dietary supplementation of CUR‐OLNE on economic efficiency. In conclusion, the application of nanocarriers for the delivery of dietary immune stimulants such as CUR‐OLNE to Litopenaeus vannamei shrimp is a promising strategy for improving shrimp nutrition. The addition of 20 mg CUR‐OLNE/kg to the diets of can be recommended as an affective intervention to improve growth performance, feed utilization, and health status of shrimp. Implementing this intervention can maximize the economic efficiency of shrimp farming while promoting sustainable practices in the industry. [ABSTRACT FROM AUTHOR]

Published
2024
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47. Effects of dietary supplementation with benthic diatom Amphora coffeaeformis on blood biochemistry, steroid hormone levels and seed production efficiency of Nile tilapia Oreochromis niloticus broodstock.

Author

Mabrouk, Mohamed, Ashour, Mohamed, Abdelghany, Mohamed F., Elokaby, Mohamed A., Abdel‐Warith, Abdel‐Wahab A., Younis, Elsayed M., Davies, Simon, El‐Haroun, Ehab, and Gewida, Ahmed G. A.

Subjects
NILE tilapia, STEROID hormones, LUTEINIZING hormone, FEED additives, DIETARY supplements, FISH feeds, FISH spawning
Abstract

Aquafeed additive quality and quantity remain pivotal factors that constrain the sustainability and progress of aquaculture feed development. This study investigates the impact of incorporating the benthic diatom Amphora coffeaeformis into the diet of Nile tilapia (Oreochromis niloticus) broodstock, on the blood biochemistry, steroid hormone (SH) levels and seed production efficiency. Broodstock females displaying mature ovary indications were initially combined with males at a ratio of three females to one male. A total of 384 adult Nile tilapia (288 females and 96 males) were used, with 32 fish (24 females and eight males) assigned to each of 12 concrete tanks (8 m³; 2 m × 4 m × 1 m), with three replicate tanks for each dietary treatment, throughout a 14‐day spawning cycle until egg harvest. Fish were fed one of four different dietary treatments: AM0% (control diet), and AM2%, AM4% and AM6% enriched with the diatom A. coffeaeformis at levels of 20, 40 and 60 g/kg of diet respectively. At the trial's conclusion, total protein, albumin, triglyceride and creatinine), SHs (follicle‐stimulating hormone, luteinizing hormone, free testosterone, total testosterone, progesterone and prolactin) and seeds production efficiency of Nile tilapia improved significantly (p < 0.05) in alignment with the increment of A. coffeaeformis supplementation. The findings propose that including A. coffeaeformis at levels ranging from 4% to 6% could be effectively employed as a feed additive during the Nile tilapia broodstock's spawning season. [ABSTRACT FROM AUTHOR]

Published
2024
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49. Arthrospira platensis nanoparticles dietary supplementation improves growth performance, steroid hormone balance, and reproductive productivity of Nile tilapia (Oreochromis niloticus) broodstock.

Author

Mabrouk, Mohamed M., Ashour, Mohamed, Younis, Elsayed M., Abdel-Warith, Abdel-Wahab A., Bauomi, Mohamed A., Toutou, Mohamed M., Mansour, Ahmed I. A., Abdelaty, Basem S., Elokaby, Mohamed A., Davies, Simon J., El-Haroun, Ehab, and Gwida, Ahmed G. A.

Subjects
NILE tilapia, DIETARY supplements, STEROID hormones, WEIGHT gain, NANOPARTICLES, SPAWNING, FISH spawning
Abstract

This study evaluates the impact of dietary supplementation of the blue-green alga Arthrospira platensis NIOF17/003 nanoparticles (AN) on the growth performance, whole-body biochemical compositions, blood biochemistry, steroid hormonal, and fry production efficiency of Nile tilapia (Oreochromis niloticus) broodstock, during the spawning season. After a 21-day preparation period to equip the females and ensure that their ovaries were filled with eggs, mating between the mature females and males took place in a 3:1 ratio during a 14-day spawning cycle. A total of 384 tilapia broodstock 288 females and 96 males with an initial body weight of 450.53±0.75, were divided into four groups; AN0: a basal diet as a control group with no supplementation of Arthrospira platensis, and the other three groups (AN2, AN4, and AN6) were diets supplemented with nanoparticles of A. platensis at levels of 2, 4, and 6 g kg─1 diet, respectively. The results found that fish-fed group AN6 showed the highest significant differences in weight gain (WG), final weight (FW), feed conversion ratio (FCR), protein efficiency ratio (PER), and feed efficiency ratio (FER). Females fed the AN6 diet showed the highest significant fat content. Compared to the AN0 group, fish fed on the supplemented diets showed significant improvement (p < 0.05) in triglyceride, glucose, and aspartate aminotransferase (AST). A gradual increase in AN inclusion level resulted in a gradual increase in the concentrations of luteinizing hormone (LH), and follicle-stimulating hormone (FSH), testosterone, progesterone, and prolactin. The rates (%) of increase in fry production for females fed supplemented diets were 10.5, 18.6, and 32.2% for AN2, AN4, and AN6, respectively, compared to the control group. This work concluded that the inclusion levels of 6 g kg─1 of A. platensis nanoparticles in the diet of Nile tilapia broodstock significantly improved the growth performances, steroid hormone concentrations, and increased the fry production efficiency by 32.2%, respectively. These findings revealed that A. platensis nanoparticles resulted in a significantly enhanced female' reproductive productivity of Nile tilapia broodstock. [ABSTRACT FROM AUTHOR]

Published
2024
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50. Antifungal and antibiofilm effects of probiotic Lactobacillus salivarius, zinc nanoparticles, and zinc nanocomposites against Candida albicans from Nile tilapia (Oreochromis niloticus), water and humans.

Author

El-Gazzar, Nashwa, Elez, Rasha M. M. Abou, Attia, Amira S. A., Abdel-Warith, Abdel-Wahab A., Darwish, Manal M., Younis, Elsayed M., Eltahlaw, Rehab A., Mohamed, Kawthar Ibraheem, Davies, Simon J., and Elsohaby, Ibrahim

Subjects
CANDIDA albicans, CANDIDA, NILE tilapia, NANOPARTICLES, PROBIOTICS, ZINC, LACTOBACILLUS, ANTIFUNGAL agents, POLYMER clay
Abstract

Introduction: Candida albicans (C. albicans) can form biofilms; a critical virulence factor that provides effective protection from commercial antifungals and contributes to public health issues. The development of new antifungal therapies, particularly those targeting biofilms, is imperative. Thus, this study was conducted to investigate the antifungal and antibiofilm effects of Lactobacillus salivarius (L. salivarius), zinc nanoparticles (ZnNPs) and nanocomposites (ZnNCs) on C. albicans isolates from Nile tilapia, fish wash water and human fish sellers in Sharkia Governorate, Egypt. Methods: A cross-sectional study collected 300 samples from tilapia, fish wash water, and fish sellers (100 each). Probiotic L. salivarius was immobilized with ZnNPs to synthesize ZnNCs. The study assessed the antifungal and antibiofilm activities of ZnNPs, L. salivarius, and ZnNCs compared to amphotericin (AMB). Results: Candida spp. were detected in 38 samples, which included C. albicans (42.1%), C. glabrata (26.3%), C. krusei (21.1%), and C. parapsilosis (10.5%). A total of 62.5% of the isolates were resistant to at least one antifungal agent, with the highest resistance to nystatin (62.5%). However, 75% of the isolates were highly susceptible to AMB. All C. albicans isolates exhibited biofilm-forming capabilities, with 4 (25%) isolates showing strong biofilm formation. At least one virulenceassociated gene (RAS1, HWP1, ALS3, or SAP4) was identified among the C. albicans isolates. Probiotics L. salivarius, ZnNPs, and ZnNCs displayed antibiofilm and antifungal effects against C. albicans, with ZnNCs showing significantly higher inhibitory activity. ZnNCs, with a minimum inhibitory concentration (MIC) of 10 µg/mL, completely reduced C. albicans biofilm gene expression. Additionally, scanning electron microscopy images of C. albicans biofilms treated with ZnNCs revealed asymmetric, wrinkled surfaces, cell deformations, and reduced cell numbers. Conclusion: This study identified virulent, resistant C. albicans isolates with strong biofilm-forming abilities in tilapia, water, and humans, that pose significant risks to public health and food safety. [ABSTRACT FROM AUTHOR]

Published
2024
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