Publications by authors named "Hamad R"

Background: It is increasingly recognized that policies played a role in mitigating or exacerbating health inequities during the COVID-19 pandemic. While US counties were particularly active in policymaking, limited work has characterized geographic and temporal variation in pandemic-era policymaking at the local level, a prerequisite for later studies examining the health effects of these policies. This paper fills this gap by characterizing county-level COVID-19-related policy trajectories over time using a novel national policy database and innovative methods.

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CRISPR-Cas (Clustered Regularly Interspaced Short Palindromic Repeats-CRISPR-associated proteins) has undergone marked advancements since its discovery as an adaptive immune system in bacteria and archaea, emerged as a potent gene-editing tool after the successful engineering of its synthetic guide RNA (sgRNA) toward the targeting of specific DNA sequences with high accuracy. Besides its DNA editing ability, further-developed Cas variants can also edit the epigenome, rendering the CRISPR-Cas system a versatile tool for genome and epigenome manipulation and a pioneering force in precision medicine. This review explores the latest advancements in CRISPR-Cas technology and its therapeutic and biomedical applications, highlighting its transformative impact on precision medicine.

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Chronic wounds in diabetic patients experience significant clinical challenges due to compromised healing processes. Hypoxia-inducible factor-1 alpha (HIF-1α) is a critical regulator in the cellular response to hypoxia, enhancing angiogenesis and tissue restoration. Nevertheless, the cellular response to the developed chronic hypoxia within diabetes is impaired, likely due to the destabilization of HIF-1α via degradation by prolyl hydroxylase domain (PHD) enzymes.

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Osteosarcoma (OS) is a rare form of malignant bone tumor affecting jaws. The diagnosis of jaws osteosarcoma (JO) presents a unique challenge due to its rarity and the diversity of histological presentations it can exhibit. Fibroblastic osteosarcoma (FO), a subtype of OS, is characterized by the presence of fibroblastic cells and osteoid-producing cells within the tumor matrix.

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Our descriptive study examined current associations (2022-2024) between US state-level health outcomes and 4 US state-level political metrics: 2 rarely used in public health research (political ideology of elected representatives based on voting records; trifectas, where 1 party controls the executive and legislative branches) and 2 more commonly used (state policies enacted; voter political lean). The 8 health outcomes spanned the life course: infant mortality, premature mortality (death at age <65), health insurance (adults aged 35-64), vaccination for children and persons aged ≥65 (flu; COVID-19 booster), maternity care deserts, and food insecurity. For the first 3 outcomes, we also examined trends in associations (2012-2024).

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Heat shock protein 90 (HSP90) is a pivotal molecular chaperone with multifaceted roles in cellular health and disease. Herein, we explore how HSP90 orchestrates cellular stress responses, particularly through its partnership with heat shock factor 1 (HSF-1). PU-H71, a selective inhibitor of HSP90, demonstrates significant potential in cancer therapy by targeting a wide array of oncogenic pathways.

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  • * Using a novel reactor design, researchers created smooth, stable nanofibers from cobalt acetate and poly(vinyl alcohol) that have a band gap energy of 2.29 eV, allowing strong absorption in the visible spectrum.
  • * The cobalt-based nanofibers demonstrated better hydrogen generation rates compared to traditional CoO nanofibers, achieving 3.266 mmol g s in optimal conditions, and showed good stability over multiple cycles, indicating a promising advance in sustainable energy technology.
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The development of new drugs for the inhibition of hepatocellular carcinoma (HCC) development and progression is a critical and urgent need. The median survival rate for HCC patients remains disappointingly low. Vinpocetine is a safe nootropic agent that is often used to enhance cognitive function.

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Objective: To examine the association between neighborhood socioeconomic disadvantage and birth outcomes among refugee women in Denmark, leveraging a natural experiment.

Methods: This register-based study included 15 118 infants born to women who arrived in Denmark as refugees during 1986 to 1998, when a dispersal policy was in place that quasirandomly assigned newcomers to neighborhoods with varying degrees of socioeconomic disadvantage. Neighborhood disadvantage was measured using a composite index representing neighborhood-level income, education, unemployment, and welfare assistance.

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  • Cisplatin is an effective chemotherapy drug used to treat different cancers, but its use is limited by serious side effects like kidney damage, hearing loss, nerve damage, and reduced blood cell production.
  • The review explores how these side effects occur through processes like oxidative stress and inflammation, as well as factors that make some patients more vulnerable based on their health history.
  • It also discusses new strategies being developed to reduce these toxicities, which could improve treatment effectiveness and the quality of life for cancer patients.
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In response to economic distress and food insecurity during the COVID-19 pandemic, Congress expanded the Supplemental Nutrition Assistance Program (SNAP) by introducing emergency allotments to increase monthly benefits, starting in March 2020. In March 2023, emergency allotments expired in the thirty-five states and territories still offering them. We provide some of the first evidence of the impacts of this loss of nutrition support-in some cases, more than $250 a month-for economically disadvantaged households.

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Objectives: The COVID-19 pandemic and subsequent policy response to mitigate disease spread had far-reaching impacts on health and social well-being. In response, the Supplemental Nutrition Assistance Program (SNAP) underwent several pandemic-era modifications, including a 15 % monthly benefit increase on January 1, 2021. Research documenting the health effects of these SNAP modifications among low-income households and minoritized groups who were most impacted by the economic fallout during the first years of the pandemic is lacking.

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  • Liver fibrosis poses a major health issue worldwide and can lead to severe conditions like cirrhosis and liver cancer, with the hedgehog signaling pathway playing a crucial role in its progression, making its inhibitors potential treatment options.
  • The study tested two drugs, simvastatin and STA-9090, individually and together in rats with induced liver damage, assessing their effects on liver health and the hedgehog pathway.
  • Results showed that while both drugs improved liver conditions, their combination offered even greater benefits, including better survival rates and healthier liver tissue, suggesting a promising approach for future clinical treatments.
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Background: The COVID-19 pandemic, and subsequent policy responses aimed at curbing disease spread and reducing economic fallout, had far-reaching consequences for maternal health. There has been little research to our knowledge on enduring disruptions to maternal health trends beyond the early pandemic and limited understanding of how these impacted pre-existing disparities in maternal health.

Methods: We leveraged rigorous interrupted time-series methods and US National Center for Health Statistics Vital Statistics Birth Data Files of all live births for 2015-2021 (N = 24,653,848).

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  • Citicoline is a naturally occurring compound in the body that helps synthesize phosphatidylcholine, crucial for neuron membrane integrity, and has shown neuroprotective and anti-inflammatory effects in various brain injury and neurodegenerative models.
  • Its anti-inflammatory action involves stabilizing cell membranes, reducing harmful glutamate release, and decreasing the production of free radicals and inflammatory cytokines, alongside modulating microglia activity and inhibiting NF-κB activation.
  • Clinical trials on citicoline for conditions like ischemic stroke, head trauma, glaucoma, and age-related memory impairment have mixed results, but many studies indicate it may improve neurological functions and cognitive health, warranting further research on dosage, treatment duration, and patient selection.
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Liver inflammatory diseases are marked by serious complications. Notably, nicardipine (NCD) has demonstrated anti-inflammatory properties, but its benefits in liver inflammation have not been studied yet. However, the therapeutic efficacy of NCD is limited by its short half-life and low bioavailability.

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Aberrant activation of the NLRP3 inflammasome is recognized to induce a chronic inflammatory response in the liver, ultimately leading to hepatic fibrosis. HSP90 is suggested to regulate NLRP3 activation and its downstream signaling. This study is the first to explore the potential therapeutic role of pimitespib in mitigating liver fibrosis in rats.

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This study evaluated the efficacy of Azadirachta indica ethosomal nanovesicle against Eimeria tenella infection in broiler chicks. Azadirachta indica ethanolic extract was screened phtochemically and analyzed active components of the extracts using high‑performance liquid chromatography (HPLC). Azadirachta indica ethosomal nanovesicle was synthesized and characterized by zeta potential and scanning electron microscope.

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  • Researchers are studying DNA in Africa to learn more about the continent’s history, but many African scientists face challenges and are often left out of these discussions.
  • A workshop called DNAirobi was held in May 2023 to help make sure African voices are included in research about African people and their past.
  • The goal is to create a better system for DNA research in Africa over the next ten years by improving communication, building partnerships, and making science more inclusive.
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  • Doxorubicin (DOX) is a chemotherapy drug that effectively treats various cancers but can lead to harmful heart damage (cardiotoxicity) which limits its use.
  • The review examines how carvedilol, a medication, protects the heart from the toxic effects of DOX by targeting several harmful processes like oxidative stress, DNA damage, and calcium imbalance.
  • Carvedilol's protective mechanisms include neutralizing free radicals, managing iron levels, and preventing cell death, suggesting its potential as a strategy for reducing chemotherapy-induced heart damage.
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