Reem Sayad

Dr. Reem Sayad

Histology, Faculty of Medicine, Assiut University, Assiut, Egypt
orcid
▪ I’m an Egyptian medical demonstrator at Histology Departme...

Research Focus & Metrics

Academic Career Length

7Years (2020-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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24 March 2021 in British Journal of Surgery
Verified
Journal Article
Closed access
Raimundas LuneviciusRaimundas Lunevicius
Raimundas Lunevicius
DNDmitri Nepogodiev
Dmitri Nepogodiev
Jakov MihanovicJakov Mihanovic
Jakov Mihanovic
KGKonstantinos Gousias
Konstantinos Gousias
Reem SayadReem Sayad
Reem Sayad
Background Preoperative SARS-CoV-2 vaccination could support safer elective surgery. Vaccine numbers are limited so this study aimed to inform their prioritization by modelling. Methods The primary outcome was the number needed to vaccinate (NNV) to prevent one COVID-19-related death in 1 year. NNVs were based on postoperative SARS-CoV-2 rates and mortality in an international cohort study (surgical patients), and community SARS-CoV-2 incidence and case fatality data (general population). NNV estimates were stratified by age (18–49, 50–69, 70 or more years) and type of surgery. Best- and worst-case scenarios were used to describe uncertainty. Results NNVs were more favourable in surgical patients than the general population. The most favourable NNVs were in patients aged 70 years or more needing cancer surgery (351; best case 196, worst case 816) or non-cancer surgery (733; best case 407, worst case 1664). Both exceeded the NNV in the general population (1840; best case 1196, worst case 3066). NNVs for surgical patients remained favourable at a range of SARS-CoV-2 incidence rates in sensitivity analysis modelling. Globally, prioritizing preoperative vaccination of patients needing elective surgery ahead of the general population could prevent an additional 58 687 (best case 115 007, worst case 20 177) COVID-19-related deaths in 1 year. Conclusion As global roll out of SARS-CoV-2 vaccination proceeds, patients needing elective surgery should be prioritized ahead of the general population.

16 April 2025 in Pharmaceuticals
Verified
Journal Article
Open access
PDF file
Helal HettaHelal Hetta
Helal Hetta
HAHashim Aljohani
Hashim Aljohani
NIZAR SiragNIZAR Sirag
NIZAR Sirag
Hassabelrasoul Elfadil AbdelgadirHassabelrasoul Elfadil Abdelgadir
Hassabelrasoul Elfadil Abdelgadir
ASAyman Salama
Ayman Salama
Reem SayadReem Sayad
Reem Sayad
Anlotinib, a novel receptor tyrosine kinase inhibitor that is taken orally, targets several RTKs and is authorized as a third-line treatment for patients with advanced non-small cell lung cancer (NSCLC). Anlotinib is also used in combination with immunotherapy or chemotherapy for advanced NSCLC. We aimed to explore the efficacy and safety of anlotinib-based regimens in NSCLC treatment, focusing on combination therapies. We also addressed challenges that hinder oncologists from using it, such as toxicity and resistance mechanisms. A systematic approach involves searching the National Institute of Health PubMed, Scopus, MedLine, and Web of Science databases up to April 2024. Relevant studies were identified and analyzed for their methodologies, outcomes, and patient characteristics. Findings revealed that numerous effective combination regimens, such as anlotinib with platinum-based chemotherapy and anlotinib combined with PD-1 blockades, have shown positive results in terms of progression-free survival (PFS), overall survival (OS), and objective response rate (ORR). On the other hand, NSCLC treatment faces hurdles due to drug resistance and its toxicity profile. These challenges underscore the need for continued research and optimization of treatment strategies.

5 August 2025 in Medical Sciences
Verified
Journal Article
Open access
PDF file
Jamir Pitton RissardoJamir Pitton Rissardo
Jamir Pitton Rissardo
IKIbrahim Khalil
Ibrahim Khalil
MTMohamad Taha
Mohamad Taha
JCJustin Bo-Jiun Chen
Justin Bo-Jiun Chen
Reem SayadReem Sayad
Reem Sayad
ACAna Leticia Fornari Caprara
Ana Leticia Fornari Caprara
Sleep disorders and stroke are intricately linked through a complex, bidirectional relationship. Sleep disturbances such as obstructive sleep apnea (OSA), insomnia, and restless legs syndrome (RLS) not only increase the risk of stroke but also frequently emerge as consequences of cerebrovascular events. OSA, in particular, is associated with a two- to three-fold increased risk of incident stroke, primarily through mechanisms involving intermittent hypoxia, systemic inflammation, endothelial dysfunction, and autonomic dysregulation. Conversely, stroke can disrupt sleep architecture and trigger or exacerbate sleep disorders, including insomnia, hypersomnia, circadian rhythm disturbances, and breathing-related sleep disorders. These post-stroke sleep disturbances are common and significantly impair rehabilitation, cognitive recovery, and quality of life, yet they remain underdiagnosed and undertreated. Early identification and management of sleep disorders in stroke patients are essential to optimize recovery and reduce the risk of recurrence. Therapeutic strategies include lifestyle modifications, pharmacological treatments, medical devices such as continuous positive airway pressure (CPAP), and emerging alternatives for CPAP-intolerant individuals. Despite growing awareness, significant knowledge gaps persist, particularly regarding non-OSA sleep disorders and their impact on stroke outcomes. Improved diagnostic tools, broader screening protocols, and greater integration of sleep assessments into stroke care are urgently needed. This narrative review synthesizes current evidence on the interplay between sleep and stroke, emphasizing the importance of personalized, multidisciplinary approaches to diagnosis and treatment. Advancing research in this field holds promise for reducing the global burden of stroke and improving long-term outcomes through targeted sleep interventions.

11 April 2024 in Annals of Medicine & Surgery
Verified
Journal Article
Open access
SSShady Sapoor
Shady Sapoor
MNMahmoud Nageh
Mahmoud Nageh
NSNoran Magdy Shalma
Noran Magdy Shalma
RSRana Sharaf
Rana Sharaf
NHNooran Haroun
Nooran Haroun
Reem SayadReem Sayad
Reem Sayad
Pancreatic cancer (PC) is a fatal malignant disease. It is well known that the relationship between PC and type 2 diabetes mellitus (T2DM) is a complicated bidirectional relationship. The most important factors causing increased risks of pancreatic cancer are hyperglycaemia, hyperinsulinemia, pancreatitis, and dyslipidemia. Genetics and the immune system also play an important role in the relationship between diabetes mellitus and pancreatic cancer. The primary contributors to this association involve insulin resistance and inflammatory processes within the tumour microenvironment. The combination of diabetes and obesity can contribute to PC by inducing hyperinsulinemia and influencing leptin and adiponectin levels. Given the heightened incidence of pancreatic cancer in diabetes patients compared to the general population, early screening for pancreatic cancer is recommended. Diabetes negatively impacts the survival of pancreatic cancer patients. Among patients receiving chemotherapy, it reduced their survival. The implementation of a healthy lifestyle, including weight management, serves as an initial preventive measure to mitigate the risk of disease development. The role of anti-diabetic drugs on survival is controversial; however, metformin may have a positive impact, especially in the early stages of cancer, while insulin therapy increases the risk of PC.


29 December 2021 in Vaccines
Verified
Journal Article
Open access
PDF file
MEMariam Elkhayat
Mariam Elkhayat
MHMaiada K. Hashem
Maiada K. Hashem
AHAhmed T. Helal
Ahmed T. Helal
OSOmar M. Shaaban
Omar M. Shaaban
AIAhmed K. Ibrahim
Ahmed K. Ibrahim
SEShimaa A. Elghazally
Shimaa A. Elghazally
Introduction: Despite global efforts to contain the illness, COVID-19 continues to have severe health, life, and economic repercussions; thus, maintaining vaccine development is mandatory. Different directions concerning COVID-19 vaccines have emerged as a result of the vaccine’s unpredictability. Aims: To study the determinants of the attitudes of healthcare workers (HCWs) to receiving or refusing to receive the vaccine. Methods: The current study adopted an interviewed questionnaire between June and August 2021. A total of 341 HCWs currently working at Assiut University hospitals offered to receive the vaccine were included. Results: Only half of the HCWs (42%) accepted the COVID-19 vaccine. The most common reason that motivated the HCWs was being more susceptible than others to infection (71.8%). On other hand, the common reasons for refusing included: previously contracted the virus (64.8%); did not have time (58.8%); warned by a doctor not to take it (53.8%). Nearly one-third of nonaccepting HCWs depended on television, the Internet, and friends who refused the vaccine for information (p < 0.05). In the final multivariate regression model, there were six significant predictors: sex, job category, chronic disease, being vaccinated for influenza, and using Assiut University hospital staff and the Ministry of Health as sources of information (p < 0.05). Conclusion: Misinformation and negative conceptions are still barriers against achieving the desired rate of vaccination, especially for vulnerable groups such as HCWs.