Publications by authors named "Okafor C"

This study evaluated the concentrations of tetracycline, erythromycin, and sulfonamide in beef, eggs, and honey products sold at grocery stores and whether standard cooking to 160 °F (71 °C) reduced the concentrations of antimicrobials spiked into the evaluated food products. In June 2021, the concentrations of selected antimicrobials in 65 samples (8 beef, 48 eggs, 9 honey samples) purchased from grocery stores within Knoxville, Tennessee, were measured using enzyme-linked immunosorbent assays. The Kruskal-Wallis test was used to assess the differences in the median tetracycline concentrations across food types, while the Mann-Whitney test was used to compare the erythromycin residue concentrations between beef and honey.

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Bile acids are signaling molecules with critical roles in cholesterol and lipid metabolism, achieved by regulating the transcriptional activity of the farnesoid X receptor (FXR, NR1H4), otherwise known as the bile acid receptor. Modifications to the C6 position of the steroidal core yield bile acid derivatives with 100x improved potency over endogenous bile acids. Prevailing hypotheses suggested increased binding affinity for FXR as the driver for this activity enhancement.

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Small ruminants, including sheep and goats, play an important role in the economy of American agriculture. They are susceptible to a variety of diseases that impact animal welfare and production. This study evaluated postmortem data from two different diagnostic laboratories in the state of Tennessee to discern common causes of death of small ruminants that were brought in for necropsy between 2017 to 2021.

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  • The study aimed to compare the effectiveness of transvaginal ultrasound measurements of cervical length and the modified Bishop score in assessing cervical readiness for labor induction in pregnant women.
  • Involving 72 nulliparous women, participants were randomly assigned to either the ultrasound or Bishop score group to evaluate cervical 'ripeness' based on specific criteria.
  • The results showed no significant differences in the mode of delivery, amount of prostaglandins used, or labor intervals between the two groups, indicating both methods are similarly effective for preinduction assessment.
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  • Molecular dynamics (MD) simulations help researchers analyze the atomic behavior of molecules over time, but optimal use of resources is necessary to maximize outcomes.
  • The study examines the variability in MD measurements based on different simulation lengths and the number of replicas using independent trajectories compared to a benchmark trajectory.
  • Findings indicate that a standardized approach to MD simulations is not practical; sometimes, longer trajectory lengths are more beneficial than multiple replicas, depending on the research goals.
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Purpose: The oncology quality, characterization, and assessment of real-world data (Oncology QCARD) Initiative was formed to develop a set of minimum study design and data elements needed to evaluate the fitness of the real-world data (RWD) source(s) proposed in an initial study concept as part of early interaction with scientific reviewers.

Methods: A multidisciplinary executive committee (EC) was established to guide the Oncology QCARD Initiative. The EC conducted a landscape review of published literature, guidances, and guidelines to evaluate relevant dimensions of data quality measurement.

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Pneumomediastinum is the presence of gas (usually air) in the mediastinum, which is rare and typically benign. Pneumomediastinum is classified into primary and secondary based on etiology. Its pathophysiology is due to high intra-alveolar pressures causing alveolar rupture, which releases air that travels along bronchoalveolar sheaths into the mediastinum.

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Background: Assessing for significant proteinuria in pregnancy (SPIP) stands as a key indicator for diagnosing preeclampsia. However, the initial method typically employed for this assessment, the urine dipstick test, often yields inaccurate results. While a 24-h urine collection is considered the most reliable test, its implementation can lead to delays in diagnosis, potentially affecting both maternal and fetal well-being.

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  • Caesarean scar pregnancy is a rare form of ectopic pregnancy that can lead to serious complications and requires careful diagnosis to improve outcomes.
  • A case report details a 35-year-old woman, previously treated for a threatened miscarriage and cervical ectopic pregnancy, who was ultimately diagnosed with a viable Caesarean scar pregnancy at 10 weeks gestation.
  • After initial medical treatment with methotrexate and a subsequent surgical procedure, the patient’s condition stabilized, and her pregnancy hormone levels returned to normal following treatment.
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Nuclear receptors are ligand-induced transcription factors that bind directly to target genes and regulate their expression. Ligand binding initiates conformational changes that propagate to other domains, allosterically regulating their activity. The nature of this interdomain communication in nuclear receptors is poorly understood, largely owing to the difficulty of experimentally characterizing full-length structures.

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Background And Objectives: Malaria can be fatal during pregnancy, posing a serious risk to both mothers and fetuses, especially in sub-Saharan Africa. Primigravidae are particularly susceptible to placental malaria in areas with high rates of transmission due to insufficient immunity. This study aimed to determine the prevalence of placental malaria infection, risk factors, types of Plasmodium causing malaria during pregnancy, and its relationship with neonatal birth weight among primigravidae.

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This research tested the impact of how group members appraise their collective history on in-group identification and group-based action in the African context. Across three experiments (Ns = 950; 270; and 259) with Nigerian participants, we tested whether the effect of historical representations-specifically the valence of the in-group's collective history-on in-group engagement, in turn, depends on whether that history is also appraised as subjectively important. In Study 1, findings from exploratory moderated-mediation analyses indicated that the appraised negative valence of African history was associated with an increase in identification and group-based action when African history was appraised as unimportant (history-as-contrast).

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Introduction: Children in boarding schools spend most of their time without their parents or caregivers, causing concerns about the suitability of such schools for children with asthma. This study assessed individuals' opinions regarding the suitability of boarding secondary schools for children with asthma.

Methods: A qualitative design was adopted for this study using a focus group discussion held on a social media platform (WhatsApp®) of the Asthma Awareness and Care Group (AACG), The group comprised 150 registered members.

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This study examined the impact of the 2017 Veterinary Feed Directive (VFD) rule changes on the prevalence of tetracycline-resistant and erythromycin-resistant bacteria ( spp., spp., and ) in cecal samples of food animals (cattle, swine, chicken, and turkey) at US slaughterhouses.

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Objective: To determine the efficacy and safety of rectal diclofenac for relieving postoperative pain following diagnostic hystero-laparoscopy and dye test (dHLD).

Methods: A prospective, double-blind, placebo-controlled, randomized trial was conducted among women who underwent dHLD to evaluate fertility. The women received either rectal diclofenac with intramuscular pentazocine or intramuscular pentazocine with rectal placebo for postoperative analgesia.

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Existing studies examining resilience among sexual minority men (SMM) have been limited by only analyzing 1 level of resilience. We therefore investigated the impact of multiple levels of resilience on the bidirectional relationship between loneliness and depression symptoms among older SMM. Loneliness, depression symptoms, and multilevel resilience scores were collected across 3 time points (October 2016 to March 2017 [T1]; October 2017 to March 2018 [T2]; and October 2018 to March 2019 [T3]) among 1,264 SMM aged 40 years and older living with and without HIV.

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Background: Globally, one billion people have hypertension (HT), it kills 9.4 million people annually. Prevalence is higher in developed countries and is rapidly rising in developing countries, and approximately 31.

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Oxidative stress-related pathologies have guided the scientific community into delving into natural product-based research on plant-based metabolites. Plant secondary metabolites serve as a valid alternative in managing oxidative stress-related pathologies. In this study, we present the secondary metabolite constituents of the polar extract (PE) and nonpolar extract (NPE) from the leaves of .

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Aging gay and bisexual men may have negative self-image due to body image dissatisfaction and internalized ageism, resulting in psychological distress. Gay and bisexual men with HIV may be at greater risk for distress because of research linking HIV to accelerated aging. We examined associations between self-image and psychological distress, and potential mediating effects resilience, fitness engagement, and whether these relationships were moderated by HIV serostatus.

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Psychiatric patients exhibit a higher rate of missed appointments compared to other medical specialities, leading to provider frustration, increased relapse, and suboptimal outcomes. This study investigates the patterns and correlates of missed appointments among outpatients at the Federal Neuropsychiatric Hospital in Calabar, Nigeria. A cross-sectional study involving 403 consecutive outpatient clinic attendees was conducted.

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Nuclear receptors are multidomain transcription factors whose full-length quaternary architecture is poorly described and understood. Most nuclear receptors bind DNA as heterodimers or homodimers, which could encompass a variety of arrangements of the individual domains. Only a handful of experimental structures currently exist describing these architectures.

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Objective: To compare the effects of early and delayed cord clamping on the haemoglobin levels of neonates delivered at term.

Methods: This randomized controlled trial enrolled pregnant women during the second stage of labour. They were randomized into either the early cord clamping (ECC) group or the delayed cord clamping (DCC) group in the ratio of 1:1.

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The progesterone receptor (PR) belongs to the steroid receptor family of ligand-regulated transcription factors, controlling genes important for development, metabolism, and reproduction. Understanding how diverse ligands bind and modulate PR activity will illuminate the design of ligands that control PR-driven signaling pathways. Here, we use molecular dynamics simulations to investigate how PR dynamics are altered by functionally diverse ligands.

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Background: Speculum lubrication may help to reduce the pain experienced during Pap-smear collection and hence increase uptake of cervical cancer screening and repeat testing, but there are fears of its interference with cytological results.

Aim: To determine and compare the adequacy of cervical cytology smears and the mean pain scores of women undergoing cervical cancer screening with or without speculum lubrication.

Methods: This was a randomised controlled study of 132 women having cervical cancer screening at a tertiary hospital in Nigeria.

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Spontaneous haemoperitoneum in pregnancy is a rare but potentially life-threatening condition that requires prompt recognition and management to avert a catastrophic outcome for the mother and baby. The main aim of this review is to summarise the current knowledge on this topic, including its incidence and clinical presentation, highlight the diagnostic challenges, and suggest management strategies. To achieve our objective, we examine the existing literature to provide insights into this complex clinical presentation to enhance our understanding and, in so doing, contribute to the existing body of knowledge on the subject of spontaneous haemoperitoneum in pregnancy.

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