Publications by authors named "Small K"

Complete characterization of the genetic effects on gene expression is needed to elucidate tissue biology and the etiology of complex traits. In the present study, we analyzed 2,344 subcutaneous adipose tissue samples and identified 34,774 conditionally distinct expression quantitative trait locus (eQTL) signals at 18,476 genes. Over half of eQTL genes exhibited at least two eQTL signals.

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An 80-year-old fit and active gentleman presented with left hip pain and a new central scotoma in his right eye after falling from an electric bicycle. He was able to mobilise independently and presented to ophthalmic services where cotton wool spots were found in both eyes and a presumptive diagnosis of Purtscher's retinopathy (PuR) was made. The patient was referred to the emergency department for assessment of a potential fracture.

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  • Genome-wide association studies have found numerous genetic loci linked to glycemic traits, but connecting these loci to specific genes and biological pathways remains a challenge.
  • Researchers conducted meta-analyses of exome-array studies across four glycemic traits, analyzing data from over 144,000 participants, which led to the identification of coding variant associations in more than 60 genes.
  • The study revealed significant pathways related to insulin secretion, zinc transport, and fatty acid metabolism, enhancing understanding of glycemic regulation and making data available for further research.
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Whole-skin DNA methylation variation has been implicated in several diseases, including melanoma, but its genetic basis has not yet been fully characterized. Using bulk skin tissue samples from 414 healthy female UK twins, we performed twin-based heritability and methylation quantitative trait loci (meQTL) analyses for >400,000 DNA methylation sites. We find that the human skin DNA methylome is on average less heritable than previously estimated in blood and other tissues (mean heritability: 10.

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  • Meiotic recombination is crucial for genetic diversity, involving both crossovers and non-crossover events that lead to gene conversion.
  • Researchers used long sequencing reads from sperm samples to analyze recombination events, highlighting variability between and within male donors.
  • The study found non-crossover gene conversions often occur near PRDM9 binding sites, suggesting two distinct mechanisms: one common, linked to PRDM9, and another rarer, associated with complex genetic events.
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  • Scientists looked at the timing of when girls start their periods (called menarche) and how it can affect their health later in life.
  • They studied about 800,000 women and found over a thousand genetic signals that influence when menstruation starts.
  • Some women have a much higher chance of starting their periods too early or too late based on their genetic makeup, suggesting that genes play a big role in this process!
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Objectives: Systemic lupus erythematosus (SLE) shows a marked female bias in prevalence. X chromosome inactivation (XCI) is the mechanism which randomly silences one X chromosome to equalise gene expression between 46, XX females and 46, XY males. Though XCI is expected to result in a random pattern of mosaicism across tissues, some females display a significantly skewed ratio in immune cells, termed XCI-skew.

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The objective assessment of habitual (poly)phenol-rich diets in nutritional epidemiology studies remains challenging. This study developed and evaluated the metabolic signature of a (poly)phenol-rich dietary score (PPS) using a targeted metabolomics method comprising 105 representative (poly)phenol metabolites, analyzed in 24 h of urine samples collected from healthy volunteers. The metabolites that were significantly associated with PPS after adjusting for energy intake were selected to establish a metabolic signature using a combination of linear regression followed by ridge regression to estimate penalized weights for each metabolite.

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Purpose: Pathogenic variants in North Carolina macular dystrophy (NCMD) have rarely been reported in the East Asian population. Herein, we reported novel variants of NCMD in 2 Korean families.

Methods: The regions associated with NCMD were analyzed with genome sequencing, and variants were filtered based on the minor allele frequency (0.

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Purpose A third-party telemedicine (TM) genetic counseling program was initiated at a large community oncology practice spanning 35 clinical sites with 110 clinicians and 97 advanced practice providers throughout Tennessee and Georgia. Patients and Methods Appropriate patients were referred through the electronic health record (EHR) based on current National Comprehensive Cancer Network guidelines. A combination of TM and genetic counseling assistants enhanced convenience, broadened access, and decreased no-show rates.

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  • A review of literature on maternity care needs in Australia was conducted to understand what women want from their care.
  • The study analyzed 59 peer-reviewed articles and identified four key themes: continuity of care, being seen and heard, safety, and empowerment, with continuity of care being the most significant.
  • The findings suggest that improving access to midwifery continuity of care could greatly enhance the maternity care experience for women, prompting calls for policy and service changes in Australia.
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Complete characterization of the genetic effects on gene expression is needed to elucidate tissue biology and the etiology of complex traits. Here, we analyzed 2,344 subcutaneous adipose tissue samples and identified 34K conditionally distinct expression quantitative trait locus (eQTL) signals in 18K genes. Over half of eQTL genes exhibited at least two eQTL signals.

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Problem: Despite 10 years of prescribing scheduled medicines by Endorsed Midwives, little is known about prescribing practices.

Background: Endorsed Midwives can prescribe scheduled medicines and have access to Medicare rebates to support service provision. Endorsed Midwives have the potential to improve access to medications for women, however, are met with barriers, including inconsistencies in state and national legislation.

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Background: B vitamins such as folate (B9), B6, and B12 are key in one carbon metabolism, which generates methyl donors for DNA methylation. Several studies have linked differential methylation to self-reported intakes of folate and B12, but these estimates can be imprecise, while metabolomic biomarkers can offer an objective assessment of dietary intakes. We explored blood metabolomic biomarkers of folate and vitamins B6 and B12, to carry out epigenome-wide analyses across up to three European cohorts.

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  • Stem cell therapies are being tested for retinal degeneration, but there's a need to ensure that preclinical data reflects the performance of clinical-grade cells used in trials.
  • Research-grade and clinical-grade human neural progenitor cells were injected into a rat model of retinal degeneration, with additional studies conducted in minipigs to prepare for clinical applications.
  • The results showed that both cell types could protect retinal function, with clinical-grade cells demonstrating safety and effectiveness, supporting an approved IND for a Phase 1/2a clinical trial for retinitis pigmentosa.
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  • Scientists are studying how genes are turned on and off in the human brain to understand brain diseases better.
  • They used special techniques to look at where and how genes work in different parts of brain cells.
  • Their research found that many important gene changes happen in the brain's cytoplasm (the part of the cell outside the nucleus) and that these changes are often connected to how brain cells communicate with each other.
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Purpose: To evaluate effects of the 0.19-mg fluocinolone acetonide (FAc) intravitreal implant (ILUVIEN) on intraocular pressure (IOP) in patients with diabetic macular edema (DME).

Design: Secondary analysis of a 36-month, phase IV, nonrandomized, open-label, observational study.

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Pubertal timing varies considerably and has been associated with a range of health outcomes in later life. To elucidate the underlying biological mechanisms, we performed multi-ancestry genetic analyses in ~800,000 women, identifying 1,080 independent signals associated with age at menarche. Collectively these loci explained 11% of the trait variance in an independent sample, with women at the top and bottom 1% of polygenic risk exhibiting a ~11 and ~14-fold higher risk of delayed and precocious pubertal development, respectively.

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Postzygotic mutations (PZMs) begin to accrue in the human genome immediately after fertilization, but how and when PZMs affect development and lifetime health remain unclear. To study the origins and functional consequences of PZMs, we generated a multitissue atlas of PZMs spanning 54 tissue and cell types from 948 donors. Nearly half the variation in mutation burden among tissue samples can be explained by measured technical and biological effects, and 9% can be attributed to donor-specific effects.

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Purpose: To clinically and molecularly study a newly found family with North Carolina macular dystrophy (NCMD/MCDR1) from Mexico.

Methods: This retrospective study comprised 6 members of a 3-generation Mexican family with NCMD. Clinical ophthalmic examinations, including fundus imaging, spectral-domain optical coherence tomography, electroretinography, and electrooculography, were performed.

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To report the results of a nonsurgical approach to repair macular holes (MHs). A retrospective chart review of consecutive patients with MHs from 2018 to 2021 was performed. Topical therapy consisted of a steroidal agent, a nonsteroidal agent, and a carbonic anhydrase inhibitor.

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