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Browsing Theses and Dissertations by Title

Browsing Theses and Dissertations by Title

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  • Shaabo, Layal (Notre Dame University-Louaize, 2022-05)
    Chronic sleep restriction (CSR) has been implicated in higher risk of insulin resistance (IR) and immune-metabolic dysfunction. No studies investigated the effect of CSR on macrophage differentiation in vWAT in relation to leptin synthesis and glucose homeostasis. Therefore, this study aimed at assessing blood glucose levels and vWAT expression of leptin, CD38, and CD163 following CSR. Adult male C57BL/6 mice were housed under 12:12 L/D cycle (lights on at 0700 hrs) with free access to food. Following a two-week acclimatization period, animals were divided into 2 groups: 1) control (C, N=8) ...
  • Touma, Tina (Notre Dame University-Louaize, 2020)
    One of the clinically major gynecological cancers is endometrial carcinoma that develops from the lining of the uterus. During the past years, different approaches have been developed to treat endometrial carcinoma, among which natural herbal medicine has recently faired as an effective method. The yellow Indian spice known as curcumin has been extolled for its healing powers and has recently been adopted for investigation by the scientific community as a potent anti-cancerous agent. Curcumin possesses anticancerous effects by targeting several important players in cell signaling pathways ...
  • Bourjeily, Joyce Samir (Notre Dame University-Louaize, 2018-05)
    Since the first rise of extended spectrum beta lactamases (ESBL), ESBLproducing organisms have posed a remarkable threat to hospitalized patients due to their activity against cephalosporins, restricting available treatment option. This rapid emergence of ESBLs has been confronted by limited data regarding both phenotypic and genotypic profiles. This lack of information requires more exploration. The aim of this study was, in the first place, to investigate the effect of garlic (A ilium sativum) ethanolic plant extract against ESBL- producing Escherichia co/i and its effect in combination ...
  • Jerdy, Jouliana (Notre Dame University-Louaize, 2020-12)
    Yerba Mate (Ilex paraguariensis) is a beverage that is highly consumed by certain communities in Lebanon. Several studies have shown the benefits of yerba mate consumption on one's health. Also, Lebanese add to their hot drink some medicinal plants that have been acquired by the society from the Arabian folk medicine. Many studies have been conducted, yet little is known about its effect on the Lebanese health, as they have been consuming it for almost 100 years. Therefore, this study was done to assess the use of yerba mate and medicinal plants. A questionnaire was distributed among 200 local ...
  • Nassif, Nathalie (Notre Dame University-Louaize, 2020)
    Chronic moderate alcohol consumption has been implicated in promoting bone health in acyclic (postmenopausal) women via increasing bone mineral density. To our knowledge, no studies investigated the potential effects of ethanol on the bone-specific markers osteocalcin and RANKL which are important in regulating osteoblast - osteoclast activity and bone metabolism. Therefore, the aim of the study was to look into RANKL expression in serum and RANKL and osteocalcin expression in the femoral neck following chronic alcohol consumption of 12% v/v ethanol in water in acyclic C57BL/6 mice. Female ...
  • Hindieh, Pascale (Notre Dame University-Louaize., 2020)
    Sexual activity constitute in the life of the adolescent, a risk-taking and possibly health-compromising behavior. Since unfortunately, knowledge about sexuality is often acquired after sexual activity has begun, sexually transmitted diseases (STDs) should be given high priority in health care and in education. Sexual education is an indispensable need, especially for adolescents, in order to protect them from irresponsible and non-conscious behavior. In the areas of adolescent sexual behavior, sexual education and knowledge, it is imperative and of paramount importance that the health-care ...
  • Sahakian, Joseph Ohannes (Notre Dame University-Louaize, 2020-09)
    Ceratitis capitata or the Mediterranean fruit fly (medfly) is a highly invasive and destructive pest due to its tolerance of various climatic and environmental conditions as well as broad host range, including hundreds of fruits and vegetables. Medfly has a great economic impact on fruit production, national market and world trade. The population in Lebanon has been on the rise since 2007 due to several factors including optimal climate and host conditions, insecticide resistance, and negligent regulatory and detection measures during fruit harvest and transportation. Medfly infestation in Lebanon ...
  • Sarkis, Monira (Notre Dame University-Louaize, 2018)
    Gold nanoparticles (AuNPs) with an estimate diameter of 25 nm have been synthesized and characterized using ultraviolet-visible spectroscopy (UV-Vis), dynamic light scattering (DLS) and Zeta potential measurements. AuNPs were coated with D2B, a monoclonal antibody recognizing an extracellular epitope of the human prostate specific membrane antigen (hPSMA). Binding of D2B to PSMA induces endocytosis of the latter, thereby marking PSMA as a docking site for the delivery of therapeutic agents. To attain a stabilized and covalent bond between D2B and AuNPs, the sulthydryl group (SH) in a cysteine ...
  • Maalouf, George Emmanuel (2020)
    Purpose: With the rapid increase in respiratory illnesses and pollution, face masks such as clothe masks, N95 masks, and surgical masks are becoming increasingly more common in everyday life. The recent SARS-CoV-2 outbreak has led to the exponential worldwide use of these masks in everyday activities. However, little is known about the effects of these masks on maximal oxygen consumption during exhaustive exercise. Methods: 11 Athletic individuals and 7 recreational individuals were recruited and took part in the 20 m shuttle run test, also known as the “beep test”, while wearing surgical masks ...
  • Matar, Rana (Notre Dame University-Louaize, 2020-10)
    Pollution has long been a burden to humanity, and among the most prominent types is plastic pollution. Plastics have been an expedient source for human activity and progress, however its large carbon footprint and harmful effects on animals, humans and habitats outweighs its advantages. Despite recycling efforts, plastic’s non bio-degradability continues to harm the environment. Bioremediation has been the most recent endeavor in managing plastic pollution, where recently discovered microorganisms have shown the capacity to break down different types of plastics. This paper highlights all ...
  • Daou, Yasmeen Salah (Notre Dame University-Louaize, 2021)
    Eggs are one of nature’s most nutritious and economical foods. Besides their nutritional value, antioxidant, anti‐cancerous, antihypertensive activity, and immunomodulatory effects, chemical and microbial contamination of eggs pose a risk on human health. Chemical contamination is due to the abuse of antibiotics in poultry. Microbial contamination can be through horizontal or vertical transmission. Microbial contamination accompanies a high risk of spread of antibiotic resistance. Microbial contamination can be controlled by choosing the egg source wisely and by storing eggs carefully. A lot of ...
  • Azzi, Elissar Elias (Notre Dame University-Louaize, 2018-06)
    Sleep restriction is now considered to be a worldwide epidemic, as over 20% of people around the world are sleep deprived. Although sleep deprivation is now an overlooked feature of modern societies, it entails considerable adverse effects on physiological systems, one being energy homeostasis. A corpus of research has demonstrated that leptin, a key hormone that conveys the body's energy status to the brain, decreases after sleep restriction, which may partly account for the associated alteration in body metabolism; however little information is available regarding the underlying ...
  • Al Hassanieh, Joelle (Notre Dame University-Louaize, 2022)
    Humans are exposed to a notable variety of toxicants including lead as a heavy metal resulting from occupations and through environmental accumulation as in the Lebanese coastal and freshwaters. It is well established that lead exposure in the workplace contributes to worker infertility and decreased reproductive efficiency. Several reports have reported the detrimental impact toxic effects on human male reproduction by subsiding libido, spermatogenesis, semen quality, hormonal production and regulation, and much more. The objectives of this study were to inspect the effects of ...
  • Fayjaloun, Salma (Notre Dame University-Louaize, 2019)
    Fusarium mycotoxins are natural contaminants of various commodities representing significant problem worldwide. Since beauvericin (BEA), one of the fusarium toxins, represents a major concern because of its potential toxicity in humans and animal health, and its high presence in feed and food commodities, the present study was carried out to evaluate the effect of BEA on cell viability, proliferation, morphology and gene expression using spermatogonial stem cells (SSCs). First, SSCs were isolated from fresh sheep testis under aseptic technique. Isolated SSCs were cultured for 36 hours at 5% CO2. ...
  • Najem-Moussa, Wadiha (Notre Dame University-Louaize, 2019-02-02)
    During recent years, the practice of administering antibiotics to animal feed at sub-therapeutic levels has raised concern with consumers because of the apparent increase of antibiotic-resistant bacteria in the human food chain. Researchers have found that probiotics composed of naturally occurring beneficial live microbes such as bacteria (lactobacilli) could be the novel growth promoters. Supplementing poultry diet with probiotics has been found to improve growth performance, feed conversion efficiency, and immune responses, and help in combating enteric pathogens. The aim of this study is ...
  • Rhaim, Zeina Antoine (Notre Dame University-Louaize, 2019)
    Known as polymorphonuclear leukocytes (PMNs), neutrophils have been shown to play a regulatory role in healing injuries and resolving infections. Although the immune response (IR) of neutrophils in bacterial and fungal infections is well understood, their impact during sporozoite infection is much less studied. This project investigates the role of neutrophils in recognizing Plasmodium berghei sporozoites in an effort to understand the mechanism of sporozoites’ IR evasion and spread of malaria infection in the blood circulation. Plasmodium berghei GFP-expressing sporozoites were purified from ...
  • Nassar, Marc Gerges (Notre Dame University-Louaize., 2020)
    The HPG axis interacts with the Sertoli and Leydig cells to ensure the proper functioning of the male reproductive system. Environmental insults, which are becoming increasingly more common, affect the sensitive male reproductive system in harmful ways. Therefore, the aim of this thesis was to, analyze a network of the paternally imprinted infertility genes shared between the HPG axis and the Sertoli and Leydig cells. With this network in place, we aimed to develop a cell culture system that would allow the evaluation of the effects of certain environmental contaminants such as mycotoxins on ...
  • Koliana, Rita (2022)
    Green synthesis of metallic nanoparticles has accumulated an ultimate interest over the last decade due to their distinctive properties that make them applicable in various fields of science and technology. Metal nanoparticles that are synthesized by using plants have emerged as nontoxic and ecofriendly. In the current study, the optimal reaction condition for the synthesis of zero valent iron nanoparticles using Malva extract was developed. For the first time, aqueous extract of Malva parviflora was used as a sustainable source of reducing and capping agents to synthesize zero valent iron ...
  • Saliba, Elisabeth (Notre Dame University-Louaize, 2020-12)
    Prostate cancer (PCa) is the most frequent cancer malignancy among men and the third leading cause of cancer death in the developed world. To date, the exact molecular mechanism underlying the role of caffeine one of the major coffee constituents on PCa prognosis is not yet unraveled. Caffeine has many antioxidant, anti-inflammatory and anti carcinogenic properties through the modulation of certain inflammatory markers such as IL-6 and TNF-α. The present study was carried out to evaluate the effect of caffeine on PCa cell lines viability, namely PC3 and PC3-PSMA and assessing as well their ...
  • El Hayek Bou Mansour, Michella (Notre Dame University-Louaize, 2021-12)
    Abrupt work schedules, such as nightshifts, are prevalent nowadays and are known to cause circadian misalignment and sleep disruption which can have adverse health consequences. Among the well documented pathologies among night workers are cardiometabolic impairments, the effects of which appear to be more disruptive in older adults due to their poorer adaptation to night work schedules. The physiological mechanisms by which night shift work and sleep disruption contribute to increased cardiovascular disease (CVD) risk are poorly understood. Furthermore, the potential role of specific CVD ...

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