Publications by authors named "Ahmad Alshehri"

Article Synopsis
  • * The analysis reviewed 69 eligible studies out of 787 records and found significant resistance rates to key carbapenem antibiotics, with highest resistance reported for ertapenem (up to 34.2%) in recent years.
  • * The findings highlight the urgent need for improved infection control strategies and ongoing surveillance to combat rising antibiotic resistance and protect public health.
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  • The study investigates how variants in the HLA-G gene and soluble HLA-G (sHLA-G) levels may relate to susceptibility to COVID-19 in 65 patients compared to 67 healthy controls.
  • Key findings indicate that the 14-bp INS/DEL polymorphism increases the likelihood of experiencing COVID-19 symptoms, while the +3196C/G polymorphism appears protective.
  • Additionally, higher serum levels of sHLA-G were found in COVID-19 patients, suggesting that these genetic factors could inform on immune responses and help identify individuals at higher risk or needing targeted treatments.
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Background: The COVID-19 pandemic has had a significant impact globally, and understanding the relationship between inflammatory markers and disease progression is crucial for effective management. This retrospective study aimed to examine the association between various inflammatory markers, such as C-reactive protein (CRP), the erythrocyte sedimentation rate (ESR), lactate dehydrogenase (LDH), D-dimer, ferritin, and procalcitonin (PCT), and the characteristics of disease progression and outcomes in individuals affected by COVID-19.

Methods: This study collected raw data from 470 patients who tested positive for SARS-CoV-2 using RT-PCR.

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  • - Leishmaniasis affects 98 countries, primarily causing severe illness and death, especially in its visceral form, necessitating the development of better treatments due to ineffective current options and side effects of existing drugs.
  • - A study identified nine natural compounds that inhibit the APX enzyme in Leishmania donovani, with estradiol cypionate showing the strongest binding affinity, indicating potential for effective treatment.
  • - The compounds exhibited favorable drug-like properties, suggesting they could lead to novel oral treatments for leishmaniasis and warrant further research into their therapeutic potential.
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Objectives: The rise in Carbapenem-resistant (CRE) is perturbing. To curb the menace of CRE, a comprehensive understanding of its prevalence and epidemiology is crucial. As varying reports abound, the true prevalence of CRE in Nigeria remains unknown.

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Objectives: To ascertain the prevalence of transfusion transmissible infections (TTIs) across diverse donor groups in the Najran province. Additionally, to establish a potential association between the development of TTI and the donors' blood group, as determined by the ABO/Rh blood grouping system.

Methods: Blood donation data of 4120 donors, spanning from January to December 2020, were retrospectively reviewed.

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The menace of microbial resistance and re-emerging disease is still a problem for healthcare givers globally, and the need for newer sources of potent antibiotics has become paramount. This study investigated the antimicrobial and antiulcer activities of Streptomyces isolate SOM013. Streptomyces isolates were cultivated and purified following standard microbiological protocols.

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Monkeypox virus (MPXV) core cysteine proteinase (CCP) is one of the major drug targets used to examine the inhibitory action of chemical moieties. In this study, an in silico technique was applied to screen 1395 anti-infective compounds to find out the potential molecules against the MPXV-CCP. The top five hits were selected after screening and processed for exhaustive docking based on the docked score of ≤ -9.

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Alkhumra hemorrhagic fever virus (AHFV) has spread beyond the Middle East. However, the actual global prevalence of the virus is yet unknown. This systematic review and meta-analysis, thus, followed the standard reporting guidelines to provide comprehensive details on the prevalence of Alkhumra virus infection globally.

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A man who is 38 years old and diagnosed with attention-deficit hyperactivity disorder was prescribed methylphenidate. Three weeks later, he began experiencing progressive shortness of breath and coughing. Imaging of his chest showed patchy bilateral ground-glass opacities, and bronchoscopy revealed a 15% eosinophil count in his bronchoalveolar lavage.

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The prevalence and patterns of aphrodisiac drug consumption without prescription among men in Saudi Arabia remain underexplored, with limited empirical evidence available. Given the potential health implications and societal considerations, a comprehensive investigation is warranted. Assess the Prevalence, pattern of use and the associated factors of Aphrodisiac drugs consumption without prescription among men at Najran City, Saudi Arabia.

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  • Marburg virus infections have a high fatality rate of 23% to 90%, prompting the need for effective therapeutic strategies targeting its VP24 protein.
  • A molecular dynamics simulation study screened 484 anti-dengue compounds, identifying five potential inhibitors, with two compounds demonstrating strong stability and binding energies to the VP24 protein across various temperatures.
  • The study found that one compound showed a maximum dissociation force indicating robust binding, making it a promising candidate for further in-vitro testing to validate its efficacy in inhibiting VP24 function.
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Recent monkeypox virus (MPXV) infections show the risk of MPXV transmission that persists today and the significance of surveillance and quick response methods to stop the virus's spread. Currently, the monkeypox virus infection is not specifically treated. In this study, QSAR models were designed using known inhibitors of cysteine proteinase from the vaccinia virus, where the Random Forest model and Ridge model had showed the best correlation between predicted and observed EC.

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The West Nile virus (WNV) is the causative agent of West Nile disease (WND), which poses a potential risk of meningitis or encephalitis. The aim of the study was to design an epitope-based vaccine for WNV by utilizing computational analyses. The epitope-based vaccine design process encompassed WNV sequence collection, phylogenetic tree construction, and sequence alignment.

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Purpose: To address recent concerns of postural orthostatic tachycardia syndrome (POTS) occurring after severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and coronavirus disease 2019 (COVID-19) vaccination.

Methods: We searched PubMed, Web of Science, and Scopus as of 1st June 2023. We performed a systematic review and meta-analysis of pooled POTS rate in SARS-CoV-2-infected and COVID-19-vaccinated groups from epidemiological studies, followed by subgroup analyses by characteristic.

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Marburg virus disease (MVD) is caused by the Marburg virus, a one-of-a-kind zoonotic RNA virus from the genus Filovirus. Thus, this current study employed AI-based QSAR and molecular docking-based virtual screening for identifying potential binders against the target protein (nucleoprotein (NP)) of the Marburg virus. A total of 2727 phytochemicals were used for screening, out of which the top three compounds (74977521, 90470472, and 11953909) were identified based on their predicted bioactivity (pIC50) and binding score (< - 7.

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One of the most important breakthroughs in healthcare is the development of vaccines. The life cycle and its gene expression in the numerous virus-associated disorders must be considered when choosing the target vaccine antigen for Epstein-Barr virus (EBV). The vaccine candidate used in the current study will also be effective against all other herpesvirus strains, based on the conservancy study, which verified that the protein is present in all herpesviruses.

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Article Synopsis
  • Superbugs, which are antibiotic-resistant bacteria, are causing fatal infections globally, exacerbated by factors like migration, urbanization, and poor sanitation.
  • The CRISPR-Cas system, particularly type II, is promising for editing the genomes of drug-resistant bacteria, but requires further advancements to reduce toxicity and improve effectiveness.
  • This review examines CRISPR limitations and highlights new base-editing techniques, such as adenine and cytidine base editors, which can directly change specific DNA bases to help eliminate drug-resistant microbes.
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  • * Early detection of antibiotic-resistant bacteria is essential for proper treatment and to curb the spread of these strains.
  • * The text reviews various technologies for detecting resistant bacteria, including traditional methods and new advancements, discussing their pros, cons, and future potential to aid healthcare professionals in tackling antibiotic resistance.
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Background And Aim: Hepatocellular carcinoma (HCC) is a significant complication of hepatitis B and still poses a global public health concern. This systematic review and meta-analysis provide adequate details on the prevalence of HCC in the HBV population within Southeast Asian countries.

Method: Following the Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) criteria, a thorough search for literature discussing the prevalence of HCC in the HBV population within southeast Asia was performed.

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SARS-CoV-2, responsible for COVID-19, shares 79% and 50% of its identity with SARS-CoV-1 and MERS-CoV, respectively. It uses the same main cell attachment and entry receptor as SARS-CoV-1, which is the ACE-2 receptor. However, key residues in the receptor-binding domain of its S-protein seem to give it a stronger affinity for the receptor and a better ability to hide from the host immune system.

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The world faces multiple public health emergencies simultaneously, such as COVID-19 and Monkeypox (mpox). mpox, from being a neglected disease, has emerged as a global threat that has spread to more than 100 nonendemic countries, even as COVID-19 has been spreading for more than 3 years now. The general mpox symptoms are similar to chickenpox and measles, thus leading to a possible misdiagnosis.

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One of the emerging epidemic concerns is Monkeypox disease which is spreading globally. This disease is caused by the monkeypox virus (MPXV), with an increasing global incidence with an outbreak in 2022. One of the novel targets for monkeypox disease is thymidylate kinase, which is involved in pyrimidine metabolism.

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Despite the effectiveness of current vaccines in reducing the spread and severity of SARS-CoV-2 infections, many people, including migrants, refugees, and foreign workers, are hesitant to be vaccinated. This systematic review and meta-analysis (SRMA) was conducted to determine the pooled prevalence estimate of the acceptance and hesitancy rates of the COVID-19 vaccine among these populations. A comprehensive search of the peer-reviewed literature indexed in PubMed, Scopus, Science Direct, and Web of Science databases was conducted.

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Tuberculosis (TB), one of the deadliest contagious diseases, is a major concern worldwide. Long-term treatment, a high pill burden, limited compliance, and strict administration schedules are all variables that contribute to the development of MDR and XDR tuberculosis patients. The rise of multidrug-resistant strains and a scarcity of anti-TB medications pose a threat to TB control in the future.

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