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Gyebi, G. A., A. A. Elfiky, O. M. Ogunyemi, I. M. Ibrahim, A. P. Adegunloye, J. O. Adebayo, C. O. Olaiya, J. Ocheje, and M. M. Fabusiwa, Structure-based virtual screening suggests inhibitors of 3-Chymotrypsin-Like Protease of SARS-CoV-2 from Vernonia amygdalina and Occinum gratissimum, , 2021. Abstract
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Gyebi, G. A., O. M. Ogunyemi, I. M. Ibrahim, O. B. Ogunro, A. P. Adegunloye, and S. O. Afolabi, "SARS-CoV-2 host cell entry: an in silico investigation of potential inhibitory roles of terpenoids", Journal of Genetic Engineering and Biotechnology, vol. 19, no. 1: Springer, pp. 1–22, 2021. Abstract
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Gyebi, G. A., O. M. Ogunyemi, I. M. Ibrahim, S. O. Afolabi, and J. O. Adebayo, "Dual targeting of cytokine storm and viral replication in COVID-19 by plant-derived steroidal pregnanes: An in silico perspective", Computers in biology and medicine, vol. 134: Elsevier, pp. 104406, 2021. Abstract
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Gyebi, G. A., A. A. Elfiky, O. M. Ogunyemi, I. M. Ibrahim, A. P. Adegunloye, J. O. Adebayo, C. O. Olaiya, J. O. Ocheje, and M. M. Fabusiwa, "Structure-based virtual screening suggests inhibitors of 3-Chymotrypsin-Like Protease of SARS-CoV-2 from Vernonia amygdalina and Occinum gratissimum", Computers in Biology and Medicine, vol. 136, 2021. Abstract
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Gyebi, G. A., A. P. Adegunloye, I. M. Ibrahim, O. M. Ogunyemi, S. O. Afolabi, and O. B. Ogunro, "Prevention of SARS-CoV-2 cell entry: insight from in silico interaction of drug-like alkaloids with spike glycoprotein, human ACE2, and TMPRSS2", Journal of Biomolecular Structure and Dynamics: Taylor & Francis, pp. 1–25, 2020. Abstract
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Guzman, P., B. Saldana, M. V. Kimiaeitalab, J. Garcıa, and G. G. Mateos, "Inclusion of fiber in diets for brown-egg laying pullets: Effects on growth performance and digestive tract traits from hatching to 17 weeks of age", Poultry Science, vol. 94, pp. 2722-2733, 2015. poultry_science-2015-guzman-2722-33.pdf
Guzelgoz, S., A. H. Mehana, O. Zakaria, and H. Arslan, "An SDR Based Wireless Laboratory: Introducing Multi-Dimensional Signal Analysis", SDR Forum, 2008.
Gutschi, T., B. Mohamad Al-Ali, R. Shamloul, K. Pummer, and H. Trummer, "Impact of cell phone use on men’s semen parameters", Andrologia, vol. 43, no. 5: Wiley Online Library, pp. 312–316, 2011. Abstract
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Gutiérrez, M. I. a, A. K. a Siraj, H. b Khaled, N. c Koon, W. c El-Rifai, and K. a d e Bhatia, "CpG island methylation in Schistosoma- and non-Schistosoma-associated bladder cancer", Modern Pathology, vol. 17, no. 10, pp. 1268-1274, 2004. AbstractWebsite

Urothelial carcinomas (TCC) constitute the vast majority of bladder cancers in most of the world. On the other hand, squamous cell bladder carcinoma, a rare subtype in the Western world, is a common subtype in areas with endemic Schistosoma infection. Although schistosomal infection has been reported to influence DNA methylation, the pattern and extent of CpG island hypermethylation in squamous cell carcinomas remain unknown. In this study, we used methylation-specific PCR to characterize 12 cancer-related genes in 41 bladder cancer samples from Egypt (31 squamous cell carcinomas (SCC), 21 of them associated with Schistosoma and 10 TCC, five of which were Schistosoma- associated). The genes analyzed included E-cadherin, DAP-Kinase, O 6MGMT, p14, p15, p16, FHIT, APC, RASSF1A, GSTP1, RARβ and p73. Methylation of at least one gene was detected in all squamous cell tumors except two, and 45% of samples had at least three methylated genes. The average methylation index was 0.24, corresponding to three of the 12 analyzed genes. Schistosoma-associated tumors had more genes methylated than non-Schistosoma tumors (average MI: 0.29 vs 0.14) (P = 0.027). Although the extent of methylation in TCC (average MI: 0.16) was lower than in squamous cell carcinomas (SCC), the overall profile of methylation was similar, with Schistosoma-associated cases having a higher methylation index. Our results suggest that schistosomal involvement associates with a greater degree of epigenetic changes in the bladder epithelium.

Gutiérrez, M. I. a, A. K. a Siraj, H. b Khaled, N. c Koon, W. c El-Rifai, and K. a d e Bhatia, "CpG island methylation in Schistosoma- and non-Schistosoma-associated bladder cancer", Modern Pathology, vol. 17, no. 10, pp. 1268-1274, 2004. AbstractWebsite

Urothelial carcinomas (TCC) constitute the vast majority of bladder cancers in most of the world. On the other hand, squamous cell bladder carcinoma, a rare subtype in the Western world, is a common subtype in areas with endemic Schistosoma infection. Although schistosomal infection has been reported to influence DNA methylation, the pattern and extent of CpG island hypermethylation in squamous cell carcinomas remain unknown. In this study, we used methylation-specific PCR to characterize 12 cancer-related genes in 41 bladder cancer samples from Egypt (31 squamous cell carcinomas (SCC), 21 of them associated with Schistosoma and 10 TCC, five of which were Schistosoma- associated). The genes analyzed included E-cadherin, DAP-Kinase, O 6MGMT, p14, p15, p16, FHIT, APC, RASSF1A, GSTP1, RARβ and p73. Methylation of at least one gene was detected in all squamous cell tumors except two, and 45% of samples had at least three methylated genes. The average methylation index was 0.24, corresponding to three of the 12 analyzed genes. Schistosoma-associated tumors had more genes methylated than non-Schistosoma tumors (average MI: 0.29 vs 0.14) (P = 0.027). Although the extent of methylation in TCC (average MI: 0.16) was lower than in squamous cell carcinomas (SCC), the overall profile of methylation was similar, with Schistosoma-associated cases having a higher methylation index. Our results suggest that schistosomal involvement associates with a greater degree of epigenetic changes in the bladder epithelium.

Guskov, A., and R. El-Kholy, "On the Possibility to Study Antiproton Production at the SPD Detector at NICA Collider for Dark Matter Search in Astrophysical Experiments", Physics of Particles and Nuclei Letters, vol. 16, issue 3, pp. 216-223, 2019. AbstractWebsite

Dark matter is an important component of the Standard model of cosmology but its nature is still unknown. One of the most common explanations is that dark matter consists of Weakly Interacting Massive Particles (WIMPs), supposed to be cold thermal relics of the Big Bang and to build up the galactic dark halos. Indirect search of dark matter could be performed via the study of an anomalous antiproton component in cosmic rays originating from possible annihilation of dark matter pairs in the galactic halo, on top of the standard astrophysical production. The measurements performed by the AMS-02 and PAMELA spectrometers have shown that limited knowledge of antiproton-production cross sections in pp, pD,pHe and HeHe collisions is one of the main uncertainties of background subtraction. The planned SPD experiment at the NICA collider could provide a precision measurement of antiproton yield in wide kinematic range in pp and pD collisions at the energy scale from the threshold to s√ = 26 GeV/c.

Guru, K. A., S. B. Shafiei, A. Khan, A. A. Hussein, M. Sharif, and E. T. Esfahani, "Understanding Cognitive Performance During Robot-Assisted Surgery.", Urology, vol. 86, issue 4, pp. 751-7, 2015 Oct. Abstract

OBJECTIVE: To understand cognitive function of an expert surgeon in various surgical scenarios while performing robot-assisted surgery.

MATERIALS AND METHODS: In an Internal Review Board approved study, National Aeronautics and Space Administration-Task Load Index (NASA-TLX) questionnaire with surgical field notes were simultaneously completed. A wireless electroencephalography (EEG) headset was used to monitor brain activity during all procedures. Three key portions were evaluated: lysis of adhesions, extended lymph node dissection, and urethro-vesical anastomosis (UVA). Cognitive metrics extracted were distraction, mental workload, and mental state.

RESULTS: In evaluating lysis of adhesions, mental state (EEG) was associated with better performance (NASA-TLX). Utilizing more mental resources resulted in better performance as self-reported. Outcomes of lysis were highly dependent on cognitive function and decision-making skills. In evaluating extended lymph node dissection, there was a negative correlation between distraction level (EEG) and mental demand, physical demand and effort (NASA-TLX). Similar to lysis of adhesion, utilizing more mental resources resulted in better performance (NASA-TLX). Lastly, with UVA, workload (EEG) negatively correlated with mental and temporal demand and was associated with better performance (NASA-TLX). The EEG recorded workload as seen here was a combination of both cognitive performance (finding solution) and motor workload (execution). Majority of workload was contributed by motor workload of an expert surgeon. During UVA, muscle memory and motor skills of expert are keys to completing the UVA.

CONCLUSION: Cognitive analysis shows that expert surgeons utilized different mental resources based on their need.

Guru, K. A., and A. A. Hussein, "Mental imagery: 'You can observe a lot by watching!'", BJU international, vol. 122, issue 6, pp. 920-921, 2018 Dec. Abstract
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Guru, K. A., N. Hinata, and A. A. Hussein, "Editorial Comment.", The Journal of urology, vol. 195, issue 6, pp. 1716-7, 2016 Jun.
Guru, K. A., N. Hinata, and A. A. Hussein, "Editorial Comment.", The Journal of urology, vol. 195, issue 6, pp. 1716-7, 2016 Jun. Abstract
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Gurland, B. H., G. Khatri, R. Ram, T. L. Hull, E. Kocjancic, L. H. Quiroz, R. F. El Sayed, K. R. Jambhekar, V. Chernyak, R. M. Paspulati, et al., "Consensus Definitions and Interpretation Templates for Magnetic Resonance Imaging of Defecatory Pelvic Floor Disorders: Proceedings of the Consensus Meeting of the Pelvic Floor Disorders Consortium of the American Society of Colon and Rectal Surgeons.", Diseases of the colon and rectum, vol. 64, issue 10, pp. 1184-1197, 2021.
Gurland, B. H., G. Khatri, R. Ram, T. L. Hull, E. Kocjancic, L. H. Quiroz, R. F. El Sayed, K. R. Jambhekar, V. Chernyak, R. M. Paspulati, et al., "Consensus Definitions and Interpretation Templates for Magnetic Resonance Imaging of Defecatory Pelvic Floor Disorders: Proceedings of the Consensus Meeting of the Pelvic Floor Disorders Consortium of the American Society of Colon and Rectal Surgeons", Female pelvic medicine & reconstructive surgery, vol. 27, issue 10, pp. e645-e656, 2021.
Gurland, B. H., G. Khatri, R. Ram, T. L. Hull, E. Kocjancic, L. H. Quiroz, R. E. F. Sayed, K. R. Jambhekar, V. Chernyak, R. M. Paspulati, et al., "Consensus Definitions and Interpretation Templates for Magnetic Resonance Imaging of Defecatory Pelvic Floor Disorders: Proceedings of the Consensus Meeting of the Pelvic Floor Disorders Consortium of the American Society of Colon and Rectal Surgeons,.", AJR. American journal of roentgenology, vol. 217, issue 4, pp. 800-812, 2021. Abstract

The Pelvic Floor Disorders Consortium (PFDC) is a multidisciplinary organization of colorectal surgeons, urogynecologists, urologists, gynecologists, gastroenterologists, radiologists, physiotherapists, and other advanced care practitioners. Specialists from these fields are all dedicated to the diagnosis and management of patients with pelvic floor conditions, but they approach, evaluate, and treat such patients with their own unique perspectives given the differences in their respective training. The PFDC was formed to bridge gaps and enable collaboration between these specialties. The goal of the PFDC is to develop and evaluate educational programs, create clinical guidelines and algorithms, and promote high quality of care in this unique patient population. The recommendations included in this article represent the work of the PFDC Working Group on Magnetic Resonance Imaging of Pelvic Floor Disorders (members listed alphabetically in Table 1). The objective was to generate inclusive, rather than prescriptive, guidance for all practitioners, irrespective of discipline, involved in the evaluation and treatment of patients with pelvic floor disorders.

Gurland, B. H., G. Khatri, R. Ram, T. L. Hull, E. Kocjancic, L. H. Quiroz, R. F. El Sayed, K. R. Jambhekar, V. Chernyak, R. M. Paspulati, et al., "Consensus definitions and interpretation templates for magnetic resonance imaging of Defecatory pelvic floor disorders : Proceedings of the consensus meeting of the pelvic floor disorders consortium of the American Society of Colon and Rectal Surgeons,", International urogynecology journal, vol. 32, issue 10, pp. 2561-2574, 2021.
Gupta, S., V. Kumar, and E. Karam, "New-age technologies-driven social innovation: What, how, where, and why?", Industrial Marketing Management, vol. 89, pp. 499-516, 2020.
Gupta, M. K., M. Jamil, X. Wang, Q. Song, Z. Liu, M. Mia, H. Hegab, A. M. Khan, A. G. Collado, and C. I. Pruncu, Performance Evaluation of Vegetable Oil-Based Nano-Cutting Fluids in Environmentally Friendly Machining of Inconel-800 Alloy, , vol. 12, issue 17: Multidisciplinary Digital Publishing Institute, pp. 2792, 2019. Abstract
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Gupta, M. K., M. Jamil, X. Wang, Q. Song, Z. Liu, M. Mia, H. Hegab, A. M. Khan, A. G. Collado, and C. I. Pruncu, "Performance evaluation of vegetable oil-based nano-cutting fluids in environmentally friendly machining of inconel-800 alloy", Materials, vol. 12, issue 17: Multidisciplinary Digital Publishing Institute, pp. 2792, 2019. Abstract
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Guo, J., M. Giovannini, A. V. Sahai, A. Saftoiu, C. F. Dietrich, E. Santo, P. Fusaroli, A. A. Siddiqui, M. S. Bhutani, A. Y. Bun Teoh, et al., "A multi-institution consensus on how to perform EUS-guided biliary drainage for malignant biliary obstruction.", Endoscopic ultrasound, vol. 7, issue 6, pp. 356-365, 2018. Abstract

Background and Objectives: EUS-guided biliary drainage (EUS-BD) was shown to be useful for malignant biliary obstruction (MBO). However, there is lack of consensus on how EUS-BD should be performed.

Methods: This was a worldwide multi-institutional survey among members of the International Society of EUS conducted in February 2018. The survey consisted of 10 questions related to the practice of EUS-BD.

Results: Forty-six endoscopists of them completed the survey. The majority of endoscopists felt that EUS-BD could replace percutaneous transhepatic biliary drainage after failure of ERCP. Among all EUS-BD methods, the rendezvous stenting technique should be the first choice. Self-expandable metal stents (SEMSs) were recommended by most endoscopists. For EUS-guided hepaticogastrostomy (HGS), superiority of partially-covered SEMS over fully-covered SEMS was not in agreement. 6-Fr cystotomes were recommended for fistula creation. During the HGS approach, longer SEMS (8 or 10 cm) was recommended. During the choledochoduodenostomy approach, 6-cm SEMS was recommended. During the intrahepatic (IH) approach, the IH segment 3 was recommended.

Conclusion: This is the first worldwide survey on the practice of EUS-BD for MBO. There were wide variations in practice, and randomized studies are urgently needed to establish the best approach for the management of this condition.

Guo, D., I. Bajo, A. Boyarsky, Ö. Cakar, O. A. Celebi, S. -sen Chang, Z. Changyong, P. D. Christofides, W. S. Cohn, and P. Daoutidis, "Guangfu, Cao, 491", Journal of Mathematical Analysis and Applications, vol. 216, pp. 696-697, 1997. Abstract
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Guo, H., A. Bao, F. Ndayisaba, T. Liu, G. Jiapaer, A. M. El-Tantawi, and P. D. Maeyer, "Space-time characterization of drought events and their impacts on vegetation in Central Asia", Journal of Hydrology, vol. 564, issue September 2018, pp. 1165-1178, 2018. space-time_characterization_of_drought_events_and_their_impacts_on.pdf