Home visiting programs for new parents have a broad range of goals, including improvements in maternal and child health, reductions in child maltreatment, and improvements in child development. Before 2020, few home visits were conducted through phone or video encounters, i.e.
View Article and Find Full Text PDFCaenorhabditis elegans males undergo sex-specific tail tip morphogenesis (TTM) under the control of the DM-domain transcription factor DMD-3. To find genes regulated by DMD-3, we performed RNA-seq of laser-dissected tail tips. We identified 564 genes differentially expressed (DE) in wild-type males versus dmd-3(-) males and hermaphrodites.
View Article and Find Full Text PDFBackground: Sex-specific morphogenesis occurs in Caenorhabditis elegans in the vulva of the hermaphrodite and in the male tail during the last larval stage. Temporal progression of vulva morphogenesis has been described in fine detail. However, a similar precise description of male tail morphogenesis was lacking.
View Article and Find Full Text PDFMeditation apps are the most commonly used mental health apps. However, the optimal dosing of app-delivered meditation practice has not been established. We examined whether the distribution of meditation practices across a day impacted outcomes in a distressed population.
View Article and Find Full Text PDFBackground: Sex-specific morphogenesis occurs in in the vulva of the hermaphrodite and in the male tail during the last larval stage. Temporal progression of vulva morphogenesis has been described in fine detail. However, a similar precise description of male tail morphogenesis was lacking.
View Article and Find Full Text PDFmales undergo sex-specific tail tip morphogenesis (TTM) under the control of the transcription factor DMD-3. To find genes regulated by DMD-3, We performed RNA-seq of laser-dissected tail tips. We identified 564 genes differentially expressed (DE) in wild-type males vs.
View Article and Find Full Text PDFA major question in evolutionary biology is how often the same developmental events, mechanisms and genes are reused in the recurrent evolution of similar phenotypes. If this happens frequently, it would suggest that evolution is often constrained by developmental genetic mechanisms. To help address this question, we used adherens junction staining and laser ablation to analyze the development underlying several features of nematode male tails have evolved recurrently.
View Article and Find Full Text PDFThe development of the adult male tail involves an extensive remodeling during the last larval stage where the pointed tail of the L4 male is converted into the blunt-ended adult tail with its collection of mechano-sensitive rays. The first step in this remodeling is the retraction of the four hypodermal cells of the tail tip to generate the blunt-ended tail. Male tail tip retraction is an excellent model for characterizing how upstream regulatory networks interact with the downstream cell biological effectors that drive morphogenetic changes in all animals.
View Article and Find Full Text PDFRecently, much attention has been focused on a group of rhabditid nematodes called Phasmarhabditis, a junior synonym of Pellioditis, as a promising source of biocontrol agents for invasive slugs. Pellioditis pelhamensis n. sp.
View Article and Find Full Text PDFMicrolearning provides a valuable and efficient strategy for delivering content to students. As online enrollments continue to increase, further research is needed to determine how students experience microlearning in an online learning format. In this qualitative study, a focus group was used to explore how learners experienced an online microlearning activity through the lens of Robert Gagné's nine events of instruction.
View Article and Find Full Text PDFNeurobiol Learn Mem
September 2022
Previous research has demonstrated hippocampal alterations in individuals experiencing elevated stress. The Mnemonic Similarity Task (MST) is a hippocampal-dependent task sensitive to age-related hippocampal decline, but it is unknown how performance on this task is related to one's experience of daily stress. We conducted separate discovery and replication analyses in 510 participants who completed the MST across four different Mechanical Turk studies.
View Article and Find Full Text PDFSingle-cell methodologies have revolutionized the analysis of the transcriptomes of specific cell types. However, they often require species-specific genetic "toolkits," such as promoters driving tissue-specific expression of fluorescent proteins. Further, protocols that disrupt tissues to isolate individual cells remove cells from their native environment (e.
View Article and Find Full Text PDFSpecialized cells of the somatic gonad primordium of nematodes play important roles in the final form and function of the mature gonad. Caenorhabditis elegans hermaphrodites are somatic females that have a two-armed, U-shaped gonad that connects to the vulva at the midbody. The outgrowth of each gonad arm from the somatic gonad primordium is led by two female distal tip cells (fDTCs), while the anchor cell (AC) remains stationary and central to coordinate uterine and vulval development.
View Article and Find Full Text PDFDue to the sheer number of COVID-19 (coronavirus disease 2019) cases there is a need for increased world-wide SARS-CoV-2 testing capability that is both efficient and effective. Having open and easy access to detailed information about these tests, their sensitivity, the types of samples they use, etc. would be highly useful to ensure their reproducibility, to help clients compare and decide which tests would be best suited for their applications, and to avoid costs of reinventing similar or identical tests.
View Article and Find Full Text PDFBackground: Despite a large body of literature investigating how the environment influences health outcomes, most published work to date includes only a limited subset of the rich clinical and environmental data that is available and does not address how these data might best be used to predict clinical risk or expected impact of clinical interventions.
Objective: Identify existing approaches to inclusion of a broad set of neighborhood-level risk factors with clinical data to predict clinical risk and recommend interventions.
Methods: A systematic review of scientific literature published and indexed in PubMed, Web of Science, Association of Computing Machinery (ACM) and SCOPUS from 2010 through October 2020 was performed.
Recent EEG studies on the early postmortem interval that suggest the persistence of electrophysiological coherence and connectivity in the brain of animals and humans reinforce the need for further investigation of the relationship between the brain's activity and the dying process. Neuroscience is now in a position to empirically evaluate the extended process of dying and, more specifically, to investigate the possibility of brain activity following the cessation of cardiac and respiratory function. Under the direction of the Center for Healthy Minds at the University of Wisconsin-Madison, research was conducted in India on a postmortem meditative state cultivated by some Tibetan Buddhist practitioners in which decomposition is putatively delayed.
View Article and Find Full Text PDFUnlabelled: A recent survey of orthopaedic surgeons asking about risk factors for nonunion following foot and ankle arthrodesis revealed that patient age is considered to be a relatively low risk factor, despite the potential for autologous graft quality to deteriorate with increasing age. The purpose of the current study was to evaluate the impact of patient age and graft type on fusion rates following hindfoot and ankle arthrodesis.
Methods: In this study, we analyzed data from a previously published clinical trial, comparing fusion success in 397 subjects who underwent hindfoot or ankle arthrodesis (597 joints) supplemented with either autograft or an osteoinductive autograft alternative, recombinant human platelet-derived growth factor-BB homodimer carried in beta-tricalcium phosphate (rhPDGF-BB/β-TCP).
Due to the sheer number of COVID-19 (coronavirus disease 2019) cases, the prevalence of asymptomatic cases and the fact that undocumented cases appear to be significant for transmission of the causal virus, SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2), there is an urgent need for increased SARS-CoV-2 testing capability that is both efficient and effective1. In response to the growing threat of the COVID-19 pandemic in February, 2020, the FDA (US Food and Drug Administration) began issuing Emergency Use Authorizations (EUAs) to laboratories and commercial manufacturers for the development and implementation of diagnostic tests[1]. So far, the gold standard assay for SARS-CoV-2 detection is the RT-qPCR (real-time quantitative polymerase chain reaction) test[2].
View Article and Find Full Text PDFBackground: Pain following autograft harvest has been studied; however, published literature has typically focused on the iliac crest with follow-up limited to only a few years. It remains unknown if pain continues or improves over time. The purpose of this study was to evaluate long-term pain associated with autograft harvest to supplement hindfoot or ankle arthrodesis.
View Article and Find Full Text PDFBackground: The separate design concepts of dual-mobility cups and triple-taper femoral stems were developed to improve survivorship following total hip replacement (THR) by reducing instability/dislocation and enabling enhanced fixation. Successful outcomes at over two decades have been reported with earlier-generation devices based on these concepts. The current study aimed to provide the first long-term results with a unique pairing of later-generation dual-mobility cup and triple-taper cementless femoral stem after a decade of use in patients undergoing THR.
View Article and Find Full Text PDFSexual maturation must occur on a controlled developmental schedule. In mammals, Makorin3 () and the miRNA regulators are key regulators of this process, but how they act is unclear. In , sexual maturation of the nervous system includes the functional remodeling of postmitotic neurons and the onset of adult-specific behaviors.
View Article and Find Full Text PDFThe nematode has been central to the understanding of metazoan biology. However, is but one species among millions and the significance of this important model organism will only be fully revealed if it is placed in a rich evolutionary context. Global sampling efforts have led to the discovery of over 50 putative species from the genus , many of which await formal species description.
View Article and Find Full Text PDFBiological roles for most long non-coding RNAs (lncRNAs) remain mysterious. Here, using forward genetics, we identify lep-5, a lncRNA acting in the C. elegans heterochronic (developmental timing) pathway.
View Article and Find Full Text PDFSince the earliest days of research on nematodes, scientists have noted the developmental and morphological variation that exists within and between species. As various cellular and developmental processes were revealed through intense focus on , these comparative studies have expanded. Within the genus , they include characterization of intraspecific polymorphisms and comparisons of distinct species, all generally amenable to the same laboratory culture methods and supported by robust genomic and experimental tools.
View Article and Find Full Text PDFAsexual reproduction in animals, though rare, is the main or exclusive mode of reproduction in some long-lived lineages. The longevity of asexual clades may be correlated with the maintenance of heterozygosity by mechanisms that rearrange genomes and reduce recombination. Asexual species thus provide an opportunity to gain insight into the relationship between molecular changes, genome architecture, and cellular processes.
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