Browsing by Author "Mohamed, Dina"

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Measuring the Impact of Materialism and Self-Congruence on Compulsive Buying Behavior of University Students and the Mediating Role of Brand Attachment: Applied on the Apparel Industry
(October University For Modern Sciences and Arts, 2022) Youssef, Abanob; Ahmed, Areej; Mohamed, Dina; Amr, Nada
The purpose of this research paper is to study the impact of materialism and self-congruence on compulsive buying behavior of university students with brand attachment as a mediator, applied on the apparel industry. This research is considered one of the first to use brand attachment as a mediator. The researchers proposed a conceptual model based on the literature review which was tested using a qualitative and quantitative approach. 322 online questionnaires were gathered from university students who shop frequently and exhibit compulsive buying with varying degrees. The non-probability convenience sampling technique was used throughout the research and data analysis was conducted using the SPSS software. The findings showed that there is a positive moderate relationship between materialism and compulsive buying behavior and between materialism and brand attachment as well. In addition to the positive moderate relationship between self-congruence and compulsive buying behavior as well as self-congruence and brand attachment. The same relationship is also established between brand attachment and compulsive buying behavior. Lastly, based on the findings of the hypotheses testing, the research had practical implications which included but were not limited to, the encouragement of the launch of a social awareness campaign on the negative consequences of compulsive buying behavior on young-adults; in addition to implications for apparel brand managers on how they can utilize the established relationships into their marketing mixes to increase profitability.
Novel grape seed extract nanoparticles attenuate amikacin-induced nephrotoxicity in rats
(Springer Open, 2023-11) Farid, Alyaa; Mohamed, Dina; Mostafa, Dina; Tarek, Rawan; Sherif, Viola; Safwat, Gehan
Amikacin (AMK), an antibiotic, is prescribed for treating various bacterial diseases like urinary tract infections, encephalitis, asthma and joint infections. The most significant side effects, which affect 1 to 10% of consumers, are kidney injury and ototoxicity. Several studies discussed the role of grape seed extract (GSE) in renoprotection against AMK. The current study aimed to extract Muscat of Alexandria grape seeds followed by its characterization to determine its bioactive components and elements. GSE nanoparticles was prepared and tested, in vitro, to determine its safety for the in vivo experiment. Experimental groups were control group I, AMK group II, GSE (50 mg/kg)-AMK group III, GSE (100 mg/kg)-AMK group IV, GSE NPs (25 mg/kg)-AMK group V and GSE NPs (50 mg/ kg)-AMK group VI. Groups 2–6 received 100 mg/kg/day of AMK by intramuscular injection for two weeks for the induction of experimental nephrotoxicity. Groups 3–6 received daily doses of GSE or GSE NPs by oral gavage, concurrently, with AMK for two weeks. GSE was rich in polyphenol compounds like proanthocyanidins, phenolic acids like gallic and egallic acids, catechine and epicatechine. GSE NPs have a smooth surface and a size that ranged from 40 to 70 nm; and have an anti-oxidant, anti-inflammatory, anti-cytotoxic and anti-microbial in vitro effects. It reduced oxidative stress and inflammation that followed AMK administration; and attenuated the AMK- induced nephrotoxicity. GSE NPs were safe to be used in vivo as a renoprotective agent against AMK; where, it reduced the oxidative stress and inflammation.