Publications by authors named "Cohen P"

The Antibody Mediated Prevention (AMP) trials showed that passively infused VRC01, a broadly neutralizing antibody (bNAb) targeting the CD4 binding site (CD4bs) on the HIV-1 envelope protein (Env), protected against neutralization-sensitive viruses. We identified six individuals from the VRC01 treatment arm with multi-lineage breakthrough HIV-1 infections from HVTN703, where one variant was sensitive to VRC01 (IC < 25 ug/mL) but another was resistant. By comparing Env sequences of resistant and sensitive clones from each participant, we identified sites predicted to affect VRC01 neutralization and assessed the effect of their reversion in the VRC01-resistant clone on neutralization sensitivity.

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Argonaute proteins are best known for their role in microRNA-mediated post-transcriptional gene silencing. Here, we show that AGO3 and AGO4, but not AGO2, localize to the sex chromatin of pachytene spermatocytes where they are required for transcriptional silencing of XY-linked genes, known as Meiotic Sex Chromosome Inactivation (MSCI). Using an mouse, we show that AGO3 and AGO4 are key regulators of spermatogenesis, orchestrating expression of meiosis-related genes during prophase I while maintaining silencing of spermiogenesis genes.

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A 64-year-old man participated in a 13.1-mile half marathon in San Diego, CA on April 23, 2023. The ambient temperature when he started the race was 54°F, which increased to 64°F on his completing the race 3 hours and 58 minutes later.

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Background: Use of sodium-glucose cotransporter 2 inhibitors (SGLT-2 inhibitors) falls short of their cardiorenal protective benefits. Patient and provider-level barriers hinder the adoption of these life-saving medications. Innovative practices to provide primary care providers (PCPs) with added clinical-decision support via a dedicated remote interdisciplinary diabetes rounds (IDRs) team could promote SGLT-2 inhibitor selection.

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Specialists in forensic medicine assist in crime scene investigations. The forensic medicine experts include anthropologists, ballistic analysts, entomologists, odontologists, and osteologists. The experts are usually not at the crime scene; they provide an evaluation of evidence that is sent to them.

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Given the uniqueness of the mitochondria, and the fact that they have their own genome, mitochondrial-derived microproteins (MDPs) are similar to, but different from, nuclear-encoded microproteins. The discovery of an increasing number of microproteins from this organelle and the importance of mitochondria to cellular and organismal health make it a priority to study this novel class of proteins in search of possible therapeutic targets and cures. In this review, we discuss the history of MDP discovery, describe the function of each MDP, and conclude with future goals and techniques to help discover more MDPs.

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Chromoblastomycosis is an uncommon, chronic granulomatous fungal infection of the skin and subcutaneous tissue. Chromoblastomycosis is most commonly caused by the traumatic inoculation of dematiaceous (pigmented) fungi, most commonly species,  species, and species. Chromoblastomycosis usually affects agricultural workers in tropical and subtropical climates.

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Purpose: Men on active surveillance (AS) for prostate cancer are extremely interested in dietary changes or supplements to prevent progression of their disease. We sought to determine whether a high omega-3, low omega-6 fatty acid diet with fish oil capsules (D + FO) decreases proliferation (Ki-67) in prostate biopsies in men with prostate cancer on AS over a 1-year time period.

Methods: In this phase II, prospective randomized trial, men (N = 100) with grade group 1 or 2 prostate cancer who elected AS were randomly assigned to the D + FO or a control group.

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Background: There is a substantial population of long-stay patients who non-emergently transfer directly from the neonatal intensive care unit (NICU) to the pediatric intensive care unit (PICU) without an interim discharge home. These infants are often medically complex and have higher mortality relative to NICU or PICU-only admissions. Given an absence of data surrounding practice patterns for non-emergent NICU to PICU transfers, we hypothesized that we would encounter a broad spectrum of current practices and a high proportion of dissatisfaction with current processes.

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Article Synopsis
  • - Dogs can experience various skin conditions that are similar to those found in humans, including specific issues like pool toes and pavement paws.
  • - Pool toes arise from friction caused by dogs' feet repeatedly rubbing against rough surfaces in swimming pools, while pavement paws develop from similar friction on uncalloused paw pads against cooler paved roads.
  • - Both conditions are classified as frictional dermatoses and differ from beach feet, which is a burn resulting from hot sand; they stem from mechanical rubbing rather than thermal exposure.
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Retinal dystrophy, optic nerve oedema, splenomegaly, anhidrosis and migraine headache (ROSAH) syndrome is an autosomal dominant disorder and to date is known to be caused by either the Thr237Met or Tyr254Cys variant in the protein kinase ALPK1. Here, we identify a family in which ROSAH syndrome is caused by a novel variant in which Ser277 is changed to Phe. All six patients examined display ocular inflammation and optic nerve elevation, four have retinal degeneration and four are registered blind.

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The gustatory system allows animals to assess the nutritive value and safety of foods prior to ingestion. The first step in gustation is the interaction of taste stimuli with one or more specific sensory receptors, that are generally believed to be present on the apical surface of the taste receptor cells. However, this assertion is rarely tested.

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Protein kinases regulate many intracellular processes, and their dysregulation causes cancers and other diseases. This review focuses on the atypical alpha-kinase 1 (ALPK1), which is activated in mammalian cells by nucleoside diphosphate heptoses (ADP-heptose, UDP-heptose, and CDP-heptose) produced by microbial pathogens but not by mammalian cells. Mutations in human ALPK1 cause ROSAH syndrome and spiradenoma, which result from an alteration in its specificity for nucleoside diphosphate heptoses, causing aberrant activation by mammalian nucleoside diphosphate sugars without microbial infection.

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MOTS-c is a mitochondrial microprotein that improves metabolism. Here, we demonstrate CK2 is a direct and functional target of MOTS-c. MOTS-c directly binds to CK2 and activates it in cell-free systems.

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Findings from clinical trials have led to advancement of care for patients with gynecologic malignancies. However, restrictive inclusion of patients into trials has been widely criticized for inadequate representation of the real-world population. Ideally, patients enrolled in clinical trials should represent a broader population to enhance external validity and facilitate translation of outcomes across all relevant groups.

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Leptin is an adipose tissue hormone that maintains homeostatic control of adipose tissue mass by regulating the activity of specific neural populations controlling appetite and metabolism. Leptin regulates food intake by inhibiting orexigenic agouti-related protein (AGRP) neurons and activating anorexigenic pro-opiomelanocortin (POMC) neurons. However, whereas AGRP neurons regulate food intake on a rapid time scale, acute activation of POMC neurons has only a minimal effect.

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Judging whether an editor is good at the job is essential; however, this task may be difficult or even impossible. Several factors are involved, many of which are beyond the control of an editor. We examined some of such situations, which are as follows: (1) Reviewer's abuse of privileged information, in which a reviewer or an associate, who is likely to be a competitor, directs members of their laboratory to rapidly replicate the data and submit the resulting paper in the same or another journal while delaying publication of the submitted paper; (2) defective micromanagement by a stakeholder or owner, such as failure to order paper for the publication of a journal; (3) penny-wise dollar-foolish mismanagement by the owner, such as limiting the figures allowed to an absurdly low number in a dermatology journal (we have a visual specialty); (4) factional abuse, such as when members of a society use a gimmick to exercise outsized influence to effect a change in journal's content, and (5) " (who is in charge)?," in which changes in the governance of an ownership society or publisher affect quality of the journal.

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Cutaneous basal cell carcinoma (BCC) in situ is a recently recognized subtype of the skin neoplasm in which the abnormal cells are confined to the epidermis. BCC in situ of the skin was previously referred to as a superficial BCC. A review of the world literature has revealed 10 cutaneous BCCs in situ that have been described in nine patients but likely reflect a more general phenomenon.

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  • Gulf War veterans often suffer from Gulf War Illness (GWI) with chronic symptoms potentially linked to autonomic nervous system dysfunction and small fiber neuropathy (SFN), raising concerns about environmental toxic exposures during their service.* -
  • A study of 51 Gulf War veterans showed that 83% had GWI, and 57% of those with GWI were also diagnosed with SFN; however, no significant differences in ANS symptoms were found between veterans with and without SFN.* -
  • The research identified potential causes for SFN in 67% of those affected, and while many cases had identifiable risk factors, about 20% of veterans had idiopathic SFN, suggesting more research is needed for
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  • Brown adipose tissue (BAT) allows mammals to regulate body temperature through a process called adaptive thermogenesis, which is stimulated by cold exposure.
  • Researchers identified a factor called Slit3 that facilitates communication between adipocyte progenitors, blood vessel cells, and sympathetic nerves, which is vital for BAT's thermogenic function.
  • The study reveals that Slit3 not only aids the growth of blood vessels and nerves in BAT but also involves a special cleaving process that releases fragments of Slit3 to activate different receptors, highlighting a complex interaction within adipose tissue that influences its response to cold.
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  • - Post ambulatory swollen hands (POTASH) is a benign condition characterized by painless swelling of the hands during activities like walking or running, making it hard for individuals to form a fist (positive fist sign) but typically resolves within 2 hours after stopping the activity.
  • - A 65-year-old man experienced POTASH while running a half marathon, with his hand swelling progressively during the race, but it completely subsided after he stopped running, allowing him to make a fist again (negative fist sign).
  • - The cause of POTASH is still unclear, but a family case suggests a possible genetic link; more awareness and research are needed among healthcare providers to better recognize and address this condition.
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  • Clowns are not only popular in entertainment but also have inspired names in dermatology, referred to as medical eponyms.
  • The text identifies four clown-related eponyms: clown nose-like lesion, clown eczema, clown alopecia pattern in frontal fibrosing alopecia, and clown's face in Brachman de Lange syndrome.
  • It also recognizes the significant role of medical clowning in healthcare, specifically honoring Cobo the Clown, a dedicated clown who has contributed to patient care for over thirty years.
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: In EDTA-induced pseudothrombopenia, citrate or MgSO are recommended for platelet counting. Pre-analytical conditions are poorly defined for tubes containing MgSO or citrate. In this study, we analyzed the impact of agitation of these tubes on platelet counts.

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