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Soliman, A. M., "Gyratorless Realization of Class of Three Variable Positive Real Functions", International Journal of Electronics, vol. 32, issue 5, pp. 529-536, 1972. j007.pdf
Whittum, M., A. A. Hussein, Y. E. Ahmed, H. Khan, C. Krasowski, N. B. Huben, P. R. May, T. Terakawa, Q. Li, and K. A. Guru, "Gynecological organ involvement at robot-assisted radical cystectomy in females: Is anterior exenteration necessary?", Canadian Urological Association journal = Journal de l'Association des urologues du Canada, 2018 May 14. Abstract

INTRODUCTION: We aimed to investigate patient and disease variables associated with gynecological organ invasion in females with bladder cancer at the time of robot-assisted radical cystectomy (RARC).

METHODS: We conducted a retrospective review of female patients who underwent robot-assisted anterior pelvic exenteration (RAAE) between 2005 and 2016. Patients were divided into two groups: those with gynecological organ involvement at RAAE and those without. Data were reviewed for perioperative and pathological outcomes. Kaplan-Meier method was used to depict survival outcomes. Multivariable stepwise regression analysis was performed to identify predictors of gynecological organ involvement.

RESULTS: A total of 118 female patients were identified; 17 (14%) showed evidence of gynecological organ invasion at RAAE. Patients with gynecological organ invasion had more lymphovascular invasion at transurethral resection of bladder tumour (TURBT) (82% vs. 46%; p=0.006), trigonal tumours at TURBT (59% vs. 18%; p=0.001), multifocal disease (65% vs. 33%; p=0.01), pN+ (71% vs. 22%; p<0.001), positive surgical margins (24% vs. 4%; p=0.02), and they less commonly demonstrated pure urothelial carcinoma at TURBT (18% vs. 66%; p<0.001). On multivariate analysis, significant predictors of gynecological organ invasion were pN positive disease (odds ratio [OR] 6.48; 95% confidence interval [CI] 1.64-25.51; p=0.008), trigonal tumour location (OR 5.72; 95% CI 1.39-23.61; p=0.02), and presence of variant histology (OR18.52; 95% CI 3.32-103.4; p=0.001).

CONCLUSIONS: Patients with trigonal tumours, variant histology, and nodal involvement are more likely to have gynecological organs invasion at RAAE. This information may help improve counselling of patients and better identify candidates for gynecological organ-sparing cystectomy.

Gamal, E. S. H., S. S. Mona, E. - S. K. Amal, and A. E. M. badii Mona, "Gynecological disturbances among females engaged in the manufacture of sex hormones", Egyptian J of Occupational Medicine, vol. 25, issue 2, pp. 249-259, 2001.
Gamal, E. S. H., S. S. Mona, E. - S. K. Amal, and A. E. M. badii Mona, "Gynecological disturbances among females engaged in the manufacture of sex hormones", American Occupational Health Conference (AOHC) , USA, 28 APRIL, 2009.
Gamal, E. S. H., S. S. Mona, E. - S. K. Amal, and A. E. M. badii Mona, "Gynecological disturbances among females engaged in the manufacture of sex hormones", International Conference on Impact of Global Issues on Woman and Children, Thailand, October, 2003.
El-Samra, G., M. Siha, and Amal El-Safty, "Gynaecological Disturbances Among Females Engaged in the Manufacture of Sex Hormones. ", Egyptian, J, Occup, Med,, 1993.
Xueming Ren, S. Cao, M. Akami, A. Mansour, Y. Yang, N. Jiang, H. Wang, G. Zhang, X. Qi, P. Xu, et al., "Gut symbiotic bacteria are involved in nitrogen recycling in the tephritid fruit fly Bactrocera dorsalis.", BMC biology, vol. 20, issue 1, pp. 201, 2022. Abstract

BACKGROUND: Nitrogen is considered the most limiting nutrient element for herbivorous insects. To alleviate nitrogen limitation, insects have evolved various symbiotically mediated strategies that enable them to colonize nitrogen-poor habitats or exploit nitrogen-poor diets. In frugivorous tephritid larvae developing in fruit pulp under nitrogen stress, it remains largely unknown how nitrogen is obtained and larval development is completed.

RESULTS: In this study, we used metagenomics and metatranscriptomics sequencing technologies as well as in vitro verification tests to uncover the mechanism underlying the nitrogen exploitation in the larvae of Bactrocera dorsalis. Our results showed that nitrogenous waste recycling (NWR) could be successfully driven by symbiotic bacteria, including Enterobacterales, Lactobacillales, Orbales, Pseudomonadales, Flavobacteriales, and Bacteroidales. In this process, urea hydrolysis in the larval gut was mainly mediated by Morganella morganii and Klebsiella oxytoca. In addition, core bacteria mediated essential amino acid (arginine excluded) biosynthesis by ammonium assimilation and transamination.

CONCLUSIONS: Symbiotic bacteria contribute to nitrogen transformation in the larvae of B. dorsalis in fruit pulp. Our findings suggest that the pattern of NWR is more likely to be applied by B. dorsalis, and M. morganii, K. oxytoca, and other urease-positive strains play vital roles in hydrolysing nitrogenous waste and providing metabolizable nitrogen for B. dorsalis.

Saad, R., M. R. Rizkallah, R. K. Aziz, and others, "Gut Pharmacomicrobiomics: the tip of an iceberg of complex interactions between drugs and gut-associated microbes", Gut pathogens, vol. 4, no. 1: BioMed Central Ltd, pp. 16, 2012. Abstract
Ahmed, L. A., M. B. Salem, S. H. Seif El-Din, N. M. El-Lakkany, H. O. Ahmed, S. M. Nasr, O. A. Hammam, S. S. Botros, and S. Saleh, "Gut microbiota modulation as a promising therapy with metformin in rats with non-alcoholic steatohepatitis: Role of LPS/TLR4 and autophagy pathways.", European journal of pharmacology, vol. 887, pp. 173461, 2020. Abstract

Gut microbiota is a crucial factor in pathogenesis of non-alcoholic steatohepatitis (NASH). Therefore, targeting the gut-liver axis might be a novel therapeutic approach to treat NASH. This study aimed to investigate the therapeutic effects of a probiotic (Lactobacillus reuteri) and metronidazole (MTZ) (an antibiotic against Bacteroidetes) either alone or in combination with metformin (MTF) in experimentally-induced NASH. NASH was induced by feeding rats high fat diet (HFD) for 12 weeks. MTF (150 mg/kg/day) or L. reuteri (2x10 colony forming unit/day) were given orally for 8 weeks; meanwhile, MTZ (15 mg/kg/day, p.o.) was administered for 1 week. Treatment with L. reuteri and MTZ in combination with MTF showed additional benefit compared to MTF alone concerning lipid profile, liver function, oxidative stress, inflammatory and autophagic markers. Furthermore, combined regimen succeeded to modulate acetate: propionate: butyrate ratios as well as Firmicutes and Bacteroidetes fecal contents with improvement of insulin resistance (IR). Yet, the administration of MTF alone failed to normalize Bacteriodetes and acetate contents which could be the reason for its moderate effect. In conclusion, gut microbiota modulation may be an attractive therapeutic avenue against NASH. More attention should be paid to deciphering the crosstalk mechanisms linking gut microbiota to non-alcoholic fatty liver disease (NAFLD) to identify new therapeutic targets for this disease.

Mohammed, R. H. A., and H. I. I. Elmakhzangy, "The Gut Microbiota and Inflammation in Rheumatoid Arthritis", New Developments in the Pathogenesis of Rheumatoid Arthritis, Raijeka, InTech, 2017.
Mohammed, R. H. A., and H. I. I. Elmakhzangy, "The Gut Microbiota and Inflammation in Rheumatoid Arthritis", New Developments in the Pathogenesis of Rheumatoid Arthritis: INTECH Open, 2017.
Salem, A. E., R. Singh, Y. K. Ayoub, A. M. Khairy, and G. E. Mullin, "The gut microbiome and irritable bowel syndrome: State of art review.", Arab journal of gastroenterology : the official publication of the Pan-Arab Association of Gastroenterology, vol. 19, issue 3, pp. 136-141, 2018. Abstract

Irritable bowel syndrome (IBS) is a functional disorder of the gastrointestinal tract, the physiology of which is not very well understood. There are multiple factors and pathways involved in pathogenesis of this entity. Among all, dysmotility, dysregulation of the brain-gut axis, altered intestinal microbiota and visceral hypersensitivity play a major role. Over the last years, research has shown that the type of gut microbiome present in an individual plays a significant role in the pathophysiology of IBS. Multiple studies have consistently shown that subjects diagnosed with IBS have disruption in gut microbiota balance. It has been established that host immune system and its interaction with metabolic products of gut microbiota play an important role in the gastrointestinal tract. Therefore, probiotics, prebiotics and antibiotics have shown some promising results in managing IBS symptoms via modulating the interaction between the above. This paper discusses the various factors involved in pathophysiology of IBS, especially gut microbiota.

Aly, A. R. M., A. R. Adel, A. O. El-Gendy, T. M. Essam, and R. K. Aziz, "Gut microbiome alterations in patients with stage 4 hepatitis C.", Gut pathogens, vol. 8, issue 1, pp. 42, 2016. Abstract

BACKGROUND: Hepatitis C virus (HCV) causes debilitating liver diseases, which may progress to cirrhosis and cancer, and claims 500,000 annual lives worldwide. While HCV epidemiology, pathophysiology, and therapy are being deeply studied, rare attention is given to reciprocal interactions between HCV infection , HCV-induced chronic liver diseases, and the human gut microbiome. As Egypt has the world's highest prevalence of HCV infections, we launched this study to monitor differences in the gut microbial community composition of Egyptian HCV patients that may affect, or result from, the patients' liver state.

RESULTS: To this end, we analyzed stool samples from six stage 4-HCV patients and eight healthy individuals by high-throughput 16S rRNA gene sequencing using Illumina MiSeq. Overall, the alpha-diversity of the healthy persons' gut microbiomes was higher than those of the HCV patients. Whereas members of phylum Bacteroidetes were more abundant in HCV patients, healthy individuals had higher abundance of Firmicutes, Proteobacteria, and Actinobacteria. Genus-level analysis showed differential abundance of Prevotella and Faecalibacterium (higher in HCV patients) vs. Ruminococcus and Clostridium (healthy group), indicating that the higher abundance of Bacteroidetes in HCV patients is most likely due to Prevotella overabundance. The probiotic genus, Bifidobacterium, was only observed in the microbiotas of healthy individuals.

CONCLUSIONS: To the best of our knowledge, this study provides a first overview of major phyla and genera differentiating stage 4-HCV patients from healthy individuals and suggests possible microbiome remodeling in chronic hepatitis C, possibly shaped by bacterial translocation as well as the liver's impaired role in digestion and protein synthesis. Future studies will investigate the microbiome composition and functional capabilities in more patients while tracing some potential biomarker taxa (e.g., Prevotella, Faecalibacterium vs. Bifidobacterium).

Zhang, J., M. T. Empl, C. Schwab, M. I. Fekry, C. Engels, M. Schneider, C. Lacroix, P. Steinberg, and S. J. Sturla, "Gut Microbial Transformation of the Dietary Imidazoquinoxaline Mutagen MelQx Reduces Its Cytotoxic and Mutagenic Potency", Toxicological Sciences, vol. 159, issue 1: Oxford University Press, pp. 266-276, 2017. Abstract
MIKHAIL, C. H. R. I. S. T. I. N. E., K. H. A. L. E. D. ELGAALY, A. Abd El Latif Abd El Hamid, O. Shaker, and S. Ali, "Gustatory Dysfunction among a Sample of Depressed Egyptian Adults under Antidepressants Therapy: A Retrospective Cohort Study.", International journal of dentistry, vol. 2021, pp. 5543840, 2021. Abstract

It is quite clear that the ability to perceive taste sensations significantly affects food choice, which consequently affects health status in the long term. Gustatory dysfunction is a neglected symptom among the depressed patients and those under antidepressants therapy, although these patients are suspectable to oral problems, due to general self-negligence related to mental disease, fear of dental treatment, and side effects of varied medications utilized in psychiatry. This study is aimed at assessing gustatory thresholds (detection and recognition thresholds) among a sample of 30 depressed Egyptian adults under antidepressants therapy for at least 3 months or psychotherapy with age ranging from 20 to 50 years old, seeking the Psychiatric Clinic at the Faculty of Medicine, Cairo University, Egypt. These patients were distributed into three equal groups (tricyclic antidepressants (TCA), selective serotonin reuptake inhibitors (SSRIs), and psychotherapy) and were assessed for gustatory detection and recognition thresholds using the filter paper disc method through a scoring system. The participants were also divided into normal taste group in which both the detection and recognition scores were 1, while the scores from 2 till 5 were considered as hypogeusia group and the score of 6 was considered as dysgeusia group. The TCA group was statistically significant from the other 2 groups in sweet detection thresholds ( = 0.043) and sweet recognition thresholds ( = 0.007). Hypogeusia for sweet was statistically significant ( = 0.041), where it was more common among TCA (70%) than both SSRIs and the psychotherapy group (20%). Gustatory dysfunction was found to be mostly associated with TCA followed by SSRIs particularly for sweet taste thresholds. More attention has to be given to taste changes among these patients as oral health affects general health by causing considerable pain and by changing what people eat, their speech, and their quality of life and wellbeing. Proper awareness and evaluation of this problem will improve the quality of life for the depressed patients and avoid unnecessary treatment. This trial is registered with ID: NCT03599011.

Vagenas, E. C., A. F. Ali, and H. Alshal, "GUP and the no-cloning theorem", The European Physical Journal C, vol. 79, issue 3, pp. 276, 2019.
Gamal-Eldeen, A. M., D. Moustafa, S. M. El-Daly, M. A. M. Abo-Zeid, S. Saleh, M. Khoobchandani, K. Katti, R. Shukla, and K. V. Katti, "Gum Arabic-encapsulated gold nanoparticles for a non-invasive photothermal ablation of lung tumor in mice.", Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie, vol. 89, pp. 1045-1054, 2017 May. Abstract

BACKGROUND: In our previous work, we have extensively evaluated the physiochemical characteristics of Gum Arabic-encapsulated gold nanoparticles (GA-AuNPs; 15-18nm) and reported their effectiveness in stopping the tumor initiation via inhibiting the pre-neoplastic lesions in liver.

OBJECTIVE: The rationale of this study is to detect the efficiency of using GA-AuNPs in photothermal application as a non-invasive technique against lung tumor. We investigated the cytotoxicity of GA-AuNPs on A549 cells, and then studied their apoptotic, anti-inflammatory, lipid peroxidation and anti-neovascular effect in in vivo model using a chemically-induced lung cancer in mice. The histopathological changes due to GA-AuNPs were investigated.

RESULTS: In the presence of laser irradiation, GA-AuNPs had a considerable cytotoxicity against A549 cells. The treatment of lung tumor-bearing mice with GA-AuNPs followed by laser exposure enhanced the apoptotic pathway and this was obvious from the histopathological investigations and the elevations in cytochrome-c, death receptor 5 and the subsequent upregulation of caspase-3, we also reported a significant reduction in the levels of the inflammatory mediator TNF-α and the angiogenesis inducer VEGF. An induction of lipid peroxidation was also reported upon treatment with either GA or GA-AuNPs.

CONCLUSION: GA-AuNPs showed no cytotoxicity in the absence of light, however the combination of GA-AuNPs with laser induced cell death in lung tumor tissues with a reduction in the inflammation and angiogenesis together with an elevation in lipid peroxidation, suggesting the potential use of these functionalized nanoparticles as a promising photothermal non-invasive treatment modality.

Isaac, S. K., Gulf Assistance Funds Post-2011: Allocation, Motivation and Influence, , Barcelona, IEMed Mediterranean Yearbook 2015, 2015.
El Damaty, A., J. C. Manwaring, and H. W. S. Schroeder, "The guillotine knife: a novel tool for safe endoscopic cutting of intracranial membranes: Technical note", Journal of neurosurgery: American Association of Neurological Surgeons, pp. 1–4, 2014. Abstract
Abdelnasser, A., M. Mostafa, A. Hasanin, A. El-Sakka, and H. Hassanein, "Guillain-Barré syndrome in the early post-partum period following COVID-19 infection", International Journal of Obstetric Anesthesia, vol. 47: Churchill Livingstone, 2021. AbstractWebsite