713 results match your criteria: "National Institute of Oceanography and Fisheries[Affiliation]"

Targeted drug delivery with responsive release is an emerging research area. Along this line, we report herein the fabrication and characterization of zeolite/chitosan (ZA/CS) composite as a pH-responsive drug carrier for ibuprofen. The drug loading and release, along with cytotoxicity, have been examined to assessing the effectiveness of ZA/CS composite as an ibuprofen therapeutic delivery system.

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The present study investigates the neuroprotective effects of the sea urchin Paracentrotus lividus gonadal extract on rotenone-induced neurotoxicity in a Parkinson's disease (PD) rat model. Parkinson's disease, characterized by the progressive loss of dopaminergic neurons in the substantia nigra (SN), is exacerbated by oxidative stress and neuroinflammation. The study involved fifty Wistar rats divided into five groups: control, dimethyl sulfoxide (DMSO) control, Paracentrotus lividus gonadal extract-treated, rotenone-treated, and combined rotenone with Paracentrotus lividus gonadal extract-treated.

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Background: For use in specialized programs in the food, pharmaceutical, nutraceutical, cosmetic, and animal feed sectors, micro-algal biomass has been generated industrially. They can be grown in closed buildings, such as photobioreactors, or open structures. The utilization of biomass from microalgae for energy production is another crucial topic.

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Vitamin E nanoparticles enhance performance and immune status of Nile tilapia.

BMC Vet Res

December 2024

Fish Diseases Department, Animal Health Research Institute AHRI, Agriculture Research Centre ARC, Kafrelsheikh, Egypt.

Article Synopsis
  • This study investigates the effectiveness of nano-chitosan protected Vitamin E (VENPs) in enhancing the growth and immune response of Nile tilapia compared to regular Vitamin E and control groups.
  • Results showed that fish fed with VENPs had significantly better growth rates, lower feed conversion ratios, and improved immune responses, particularly at 75% and 100% concentrations.
  • Fish on the VENPs diet displayed a markedly lower mortality rate when challenged with A. hydrophila, suggesting that incorporating VENPs into their diet at 50, 75, and 100 mg/kg could boost their immunity against infections.
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This study proposes the heterojunction photocatalyst, Sn-doped TiO/Ti-doped SnO (herein named SnTiO), as a promising alternative to pure TiO. SnTiO demonstrates improved light harvesting efficiency over TiO by generating longer-lived electron-hole (e-h) pairs, while also displaying a smaller band gap compared to pure TiO. Consequently, we show that it is a promising candidate for the photocatalytic oxidation (PCO) of As to the less toxic and more readily removable form As.

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  • - This case study examines the prevalence and impact of the parasite Caligus clemensi on European seabass and flathead grey mullet at a marine fish farm, finding seasonal peaks in infestations during winter and spring respectively, along with significant declines in the warmer months.
  • - Morphological and molecular analyses confirmed C. clemensi as the identified parasite, highlighting its physical traits and genetic characteristics, while also revealing a strong immune response in infected fish indicated by increased interleukin-1β levels and severe tissue damage upon evaluation.
  • - Environmental assessments showed water quality issues linked to local oil activities, including high levels of suspended solids and dissolved ions, which likely contributed to the conditions favoring parasite growth and reduced fish resistance.
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Several studies have shown the importance of using seaweed liquid extract (True-Algae-Max, TAM) as a fish feed additive, and fish-water conditioner. In addition, TAM has demonstrated significant growth improvement when used as a plant growth biostimulant. This study investigates whether seaweed liquid extract (TAM) can achieve good results in new experimental fields such as chromium remediation, plant germination, and live feed supplementation for marine invertebrate Copepod (Oithona nana).

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Research on Function of Ribosomal Protein S6 Kinases, 1α and β, Based on Molecular Cloning and siRNA-Based Interference in Juvenile Blunt Snout Bream ().

Biology (Basel)

October 2024

Tongwei Agricultural Development Co., Ltd., Key Laboratory of Nutrition and Healthy Culture of Aquatic, Livestock and Poultry, Ministry of Agriculture and Rural Affairs, Healthy Aquaculture Key Laboratory of Sichuan Province, Chengdu 610093, China.

Article Synopsis
  • The study focused on how two isoforms of ribosomal protein S6 kinase 1 (S6K1α and S6K1β) affect the expression of genes related to glycolysis and gluconeogenesis in juvenile blunt snout bream.
  • Researchers cloned and characterized these isoforms, revealing their sequences and significant expression in heart and gonads.
  • The use of siRNAs demonstrated that S6K1α primarily regulates gluconeogenesis, while both S6K1α and S6K1β work together to co-regulate glycolysis, highlighting their distinct roles in metabolic processes.
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  • - The study focused on soft coral collected from the Red Sea and successfully isolated a new compound called [(2)-2,3-dihydroxypropyl] (2)-2-hydroxypentadecanoate, along with several other known substances.
  • - Researchers used advanced spectroscopic techniques, including 1D and 2D NMR, to determine the chemical structure and composition of the isolated compounds.
  • - The newly identified mono-acyl glycerol ester exhibited moderate antimicrobial activity against certain microbial strains and showed weak cytotoxic and antioxidant activities.
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This study presents a simple, sustainable, eco-friendly approach for synthesizing copper oxide (CuO) nanoparticles using Citrus aurantium peel extract as a natural reducing and stabilizing agent. The synthesized CuO and CuO-OP were characterized using various techniques, including surface area measurement (S), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), diffuse reflectance spectroscopy (DRS), scanning electron microscopy (SEM) coupled with energy dispersive X-ray spectroscopy (EDX), and high resolution transmission electron microscope (HRTEM). DRS analysis determines band gap energy (E) of 1.

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Per- and polyfluoroalkyl substances (PFAS), a class of man-made chemicals, possess unique properties that have rendered them indispensable in various industries and consumer goods. However, their extensive use and persistence in the environment have raised concerns about their potential repercussions on human health and the ecosystem. This review provides insights into the sources, occurrence, transformation, impacts, fate, monitoring, and remediation strategies for PFAS.

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Innovative application of green surfactants as eco-friendly scale inhibitors in industrial water systems.

Sci Rep

November 2024

Water Company, Holding Company of Water & Wastewater, P.O. Box: 21511, Alexandria, Egypt.

Scale deposition poses significant challenges in various industrial utilities, necessitating the development of eco-friendly scale inhibitors in line with environmental regulations. This study investigates the potential of two natural surfactants, Casein and Rhamnolipid, as innovative inhibitors for calcium carbonate (CaCO) scale formation, offering an alternative to traditional water treatment chemicals. The anti-scaling characteristics of these two green surfactants were performed using conductivity and electrochemical impedance spectroscopy (EIS) techniques.

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Pathogenic fungi employ numerous strategies to colonize plants, infect them, reduce crop yield and quality, and cause significant losses in agricultural production. The increasing use of chemical pesticides has led to various ecological and environmental issues, including the emergence of resistant weeds, soil compaction, and water pollution, all negatively impacting agricultural sustainability. Additionally, the extensive development of synthetic fungicides has adverse effects on animal and human health, prompting the exploration of alternative approaches and green strategies for phytopathogen control.

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Seroprevalence of in Cattle in Southern Egypt: Do Milk and Serum Samples Tell the Same Story?

Animals (Basel)

October 2024

Department of Infectious Diseases and Pathobiology, Institute of Parasitology, Vetsuisse-Faculty, University of Bern, Länggassstrasse 122, CH-3012 Bern, Switzerland.

is an intracellular protozoan parasite of veterinary and public health importance. Infection may lead to abortion in susceptible pregnant animals and women, and potentially fatal health complications in immunocompromised individuals. In this study, we aimed to provide an update on the seroprevalence of, and risk factors for, antibodies in cattle from Qena, southern Egypt.

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In this paper, the concentrations, origins, and carcinogenic potential of n-alkanes and polycyclic aromatic hydrocarbons (PAHs) collected from Shalateen sediments (Sh), Red Sea, Egypt were discussed. Individual n-alkanes has fluctuated from a minimum of 17.7 μg/g dw recorded for C-9 at Sh-54 to a maximum of 2.

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This study was conducted to assess sediment trace metals (Cd, Cr, Cu, Pb, Ni and Zn) contamination using a systematic approach by collecting sediment samples from 8 transects along the Dubai coastline, each 10 km long, and each transect included its nearshore sediment sampling station. Additionally, 10 sediment samples were collected from the Dubai creek and other potential sources of metal pollution. The sediment samples were collected in December and again in August.

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Unlabelled: Sea cucumbers are both versatile marine organisms and an Asian marine food known to have several medicinal effects. We evaluated the anti-allergic potential of some major purified holostane-type saponins from the body wall of the black sea cucumber, . Six saponin compounds were isolated, holothurin B (), holothurin A (), 24-dehydro echinoside A (), desholothurin A1 (), desholothurin A (), and des 24-dehydro echinoside A ().

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To increase the limited commercial utility and lessen the negative environmental effects of the massive growth of brown macroalgae, this work illustrates the feasibility of valorizing the invasively proliferated into different value-added products. The proximate analysis recommends its applicability as a solid biofuel with a sufficient calorific value (14.82 ± 0.

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Chlorogenic Acid Plays an Important Role in Improving the Growth and Antioxidant Status and Weakening the Inflammatory Response of Largemouth Bass ().

Animals (Basel)

October 2024

Tongwei Agricultural Development Co., Ltd., Key Laboratory of Nutrition and Healthy Culture of Aquatic, Livestock and Poultry, Ministry of Agriculture and Rural Affairs, Healthy Aquaculture Key Laboratory of Sichuan Province, Chengdu 610093, China.

Article Synopsis
  • The experiment tested the effects of chlorogenic acid (CGA) on largemouth bass over eight weeks, with supplementation levels at 0, 60, 120, 180, and 240 mg/kg.
  • The groups receiving 180 and 240 mg/kg of CGA showed significant improvements in growth metrics and a reduction in feed conversion ratio (FCR) compared to the control group.
  • CGA supplementation enhanced antioxidant levels and reduced inflammation in the fish, suggesting it could be an effective dietary supplement for promoting the health and growth of largemouth bass.
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  • * The most successful isolate, Bacillus licheniformis AZU-A5, achieved PHA production rates up to 1.75 g/L, with structural identification revealing the product as polyhydroxy-3R-butyrate (R-PH3B).
  • * Analysis showed that lipid chemistry significantly influenced PHA structuration and interactions, with factors like lipid chain length affecting structural signals and assembly, while unsaturation had minimal effects.
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A novel model of the sustainable double crosslinked molecularly imprinted polymer (D-Crosslinked MIP) represented as a supramolecular imprinted polymer was synthesized via the bulk polymerization method. The primary crosslinking was fabricated using biomacromolecule chitosan as a functional monomer and glutaraldehyde as a crosslinker. The primary crosslinked was subjected to dynamic interactions in a secondary crosslinking by binding AlO-NPs and TiO-NPs, forming the supramolecular D-Crosslinked-MIP.

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This study is the first of its kind in terms of focusing on the seasonal monitoring of bromine species (bromide and bromate) and some of the main physicochemical parameters in the surface water of stations inside and in front of the El Noubareya and El-Umum drains that flow directly or indirectly to the Egyptian Mediterranean coast at A (El Noubareya Drain) and B (El-Mex Bay) sites. Among the bromine species, bromate (BrO) is a disinfection byproduct considered by many international agencies to have a potential carcinogenic effect in humans and is also known to be ecologically toxic to aquatic organisms. Drain water samples collected from the studied sites A and B had a bromide/chlorinity ratio (3.

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This work evaluates utilizing the native mussel Brachidontes pharaonis as a bioindicator and sentinel organism for monitoring heavy metals Cu, Zn, and Cd along the Red Sea coast of Egypt. Samples were collected from four coastal locations, and the concentrations of heavy metals in the mussels' tissues, shells, seawater, and sediments were analyzed. Subsequently, bioassay experiments were conducted by exposing the organisms to single, binary, and tertiary metal mixtures, and the accumulation of heavy metals was determined to elucidate the dynamics of metal-metal interactions.

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  • Climate change is causing problems for sea creatures like sea anemones and upside-down jellyfish, mainly from warmer oceans and harmful sunlight.
  • Scientists studied how these animals react when exposed to heat and UV light, finding they change their body chemistry.
  • They found different chemicals in jellyfish and sea anemones, showing that heat increases amino acids in jellyfish and both amino acids and sugars in sea anemones after a few days of UV exposure.
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Bivalves possess important ecological and economic values. They have been extensively used as bioindicators for both emerging and classical pollutants in the aquatic environment. This study investigates the levels of trace metals, polycyclic aromatic hydrocarbons (PAHs), and organochlorine pesticides (OCPs), alongside microplastic (MPs), in Tridacna maxima, Paphia textile, and Paratapes undulatus, collected from the Gulf of Suez.

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