Publications by authors named "Perlman S"

Objective: To determine whether patients undergoing a trial of labor with a breech presentation following a failed attempt of external cephalic version (ECV) are at increased risk of adverse maternal and neonatal outcomes.

Methods: This retrospective cohort study was conducted at a single university-affiliated medical center. The study group comprised women with singleton pregnancies at term, categorized into three groups: those who underwent a failed external cephalic version (ECV) and subsequently attempted a trial of breech delivery (Breech-failed-ECV group), those who attempted an assisted vaginal breech delivery without a prior ECV attempt (Breech-no-ECV group), and those with vertex presentation following a successful ECV (Vertex-ECV).

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  • MERS-CoV is a virus found in dromedary camels on the Arabian Peninsula, which can occasionally infect humans, but its diversity has been under-studied, especially during the COVID-19 pandemic.
  • A study conducted from November 2023 to January 2024 collected 558 camel swab samples in Saudi Arabia, revealing that 39% tested positive for MERS-CoV RNA, with sequencing of 42 MERS-CoVs and other related coronaviruses.
  • The genetic analysis showed that MERS-CoV sequences were closely related to the B5 lineage and had unique characteristics, highlighting the need for further study to assess their public health implications and potential for human transmission.
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  • This study focused on vaccine hesitancy in Israel's ultraorthodox Jewish community, where many people are hesitant to get vaccinated against COVID-19.
  • Researchers developed and validated a questionnaire to understand factors influencing the decision to receive the fourth COVID-19 vaccine dose, employing a mixed-methods approach.
  • Key findings showed that religious authority, health information sources, and perceptions of vaccine safety and effectiveness were significant factors, with about 46% of participants indicating intention to get the fourth dose.
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Introduction: The COVID-19 pandemic forced a rapid shift toward virtual modalities for the treatment of depression in primary care.

Methods: Participants were adults 18 years and older with a new episode of depression diagnosed in primary care between March 1, 2020, and May 21, 2021, and moderate-to-severe symptoms of depression at the time of diagnosis (N = 9619). Outcomes were 1) antidepressant medications prescribed and dispensed (referred to as received), as well as adherence to those medications; 2) referrals made to depression-related services and the receipt of those services; and 3) a follow-up visit completed with the diagnosing practitioner regardless of treatment actions.

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Research Question: What is the relationship between sonographic diagnosis of isolated adenomyosis and placenta-associated obstetric outcomes?

Design: In this 12-year retrospective cohort study (2010-2022), patients presenting with adenomyosis-related symptoms were assessed via ultrasound. The study included 59 women diagnosed with adenomyosis and 62 controls, leading to 203 births (90 in the adenomyosis group and 113 in the control group). Patients with endometriosis, uterine fibroids and anomalies, and those using assisted reproductive technology were excluded.

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Purpose: Sequencing-based genetic testing often identifies variants of uncertain significance (VUS) or fails to detect pathogenic variants altogether. We evaluated the utility of RNA sequencing (RNA-seq) to clarify VUS or identify missing variants in a clinical setting.

Methods: Over a 2-year period, genetics providers at a single institution referred 26 cases for clinical RNA-seq.

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: Determining how a patient with metastatic cancer is responding to therapy can be difficult for medical oncologists, especially with text-only radiology reports. In this investigation, we assess the clinical usefulness of a new algorithm-based analysis that provides spatial location and quantification for each detected lesion region of interest (ROI) and compare it to information included in radiology reports in the United States. : Treatment response radiology reports for FDG PET/CT scans were retrospectively gathered from 228 patients with metastatic cancers.

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  • FLASH radiotherapy is a new approach in cancer treatment that aims to reduce harmful side effects by using high radiation doses in a shorter time.
  • Researchers studied how Drosophila melanogaster (fruit flies) responded to different radiation dose rates, comparing ultrahigh dose rates (UHDR) and conventional dose rates (CONV).
  • The results showed that fruit flies exposed to UHDR rates had significantly higher survival and eclosion rates than those treated with CONV, suggesting potential benefits of FLASH therapy for normal tissue protection at certain doses.
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  • Recent vaccination and natural infections have led to a significant drop in severe cases, hospitalizations, and deaths from SARS-CoV-2, despite the emergence of new variants that can evade some immune defenses.
  • Research involving mice showed that they remained protected against a closely related ancestral virus, even with low neutralizing antibodies after exposure to newer variants, suggesting a strong immune response lasting from prior infections.
  • The study highlighted the importance of T cells in providing this protection, as previous infection resulted in higher levels of tissue-resident memory T cells in the nasal area, though less prominent in the lungs.
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  • Antiviral antibody therapy faces challenges due to the rapid evolution of viruses, making it crucial to find flexible solutions.
  • Researchers have developed a method using nanobodies from camelids that can be quickly modified to target new viral mutations, focusing on areas where viruses change.
  • As a successful example, they adapted a specific nanobody to effectively combat recent Omicron subvariants in under two weeks, highlighting the potential for fast-tracking drug development to match viral evolution.
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Objectives: Spinocerebellar ataxia 27B due to GAA repeat expansions in the fibroblast growth factor 14 (FGF14) gene has recently been recognized as a common cause of late-onset hereditary cerebellar ataxia. Here we present the first report of this disease in the US population, characterizing its clinical manifestations, disease progression, pathological abnormalities, and response to 4-aminopyridine in a cohort of 102 patients bearing GAA repeat expansions.

Methods: We compiled a series of patients with SCA27B, recruited from 5 academic centers across the United States.

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Introduction: Early child development occurs within an interactive environment, initially dominated by parents or caregivers, and is heavily influenced by the dynamics of this social context. The current study probed the neurobiology of "family personality", or family functioning, in the context of parent-child dyadic interaction using a two-person neuroimaging modality.

Methods: One hundred and five parent-child dyads (child mean age 5 years 4 months) were recruited.

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  • Understanding how epitopes in viral glycoproteins work is crucial for decoding their structure and function, with identified epitopes having varying effects on viral entry into cells.* -
  • The study used nanobodies to target a specific epitope on the SARS-CoV-2 spike protein, finding that it enhances entry for the original virus but neutralizes entry for the Omicron variant.* -
  • The findings indicate that the role of epitopes can change depending on the viral variant, highlighting the need to evaluate antibody therapies across different strains for effectiveness and safety.*
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  • The study evaluated the Scale for the Assessment and Rating of Ataxia (SARA) for its reliability and validity in patients with neurological symptoms from lysosomal storage disorders (LSDs), particularly Niemann-Pick disease type C and GM2 Gangliosidoses.
  • Data from three clinical trials involving 122 patients and 703 visits were analyzed, focusing on retest reliability, responsiveness, and identifying meaningful changes in SARA scores through various global impression assessments.
  • Results showed high reliability (ICC of 0.95+) and minimal change in SARA scores over time, with patient interviews indicating that a one-point improvement on the SARA scale is clinically significant for patients' everyday lives.
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Purpose: In some cases of prenatal genetic testing, an ample amount of fetal DNA is needed, to allow for parallel testing (conducting several genetic tests simultaneously). This study investigated the association between amniotic fluid DNA concentration and various factors. We aimed to define the required amount of amniotic fluid to be extracted in amniocentesis, to allow parallel testing throughout gestational weeks.

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Unlabelled: Respiratory infections are a major health burden worldwide. Respiratory syncytial virus (RSV) is among the leading causes of hospitalization in both young children and older adults. The onset of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic and the public health response had a profound impact on the normal seasonal outbreaks of other respiratory viruses.

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  • SARS-CoV-2, along with SARS-CoV and MERS-CoV, are dangerous coronaviruses that have caused significant outbreaks, with SARS-CoV-2 evolving variants that can evade current vaccines.
  • A new subunit vaccine, Om-S-MERS-RBD, combines key components from MERS-CoV and a modified SARS-CoV-2 Omicron spike protein, showing promise in mouse models for broad protection against various coronaviruses.
  • Immunizing mice with this vaccine displayed strong immune responses and effectively reduced the viral load from multiple coronavirus strains, highlighting its potential for a universal vaccine against future CoV infections.
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encode a conserved accessory gene within the +1 open reading frame (ORF) of nucleocapsid called the internal N gene. This gene is referred to as "I" for mouse hepatitis virus (MHV), ORF9b for severe acute respiratory CoV (SARS-CoV) and SARS-CoV-2, and ORF8b for Middle East respiratory syndrome CoV (MERS-CoV). Previous studies have shown ORF8b and ORF9b have immunoevasive properties, while the only known information for MHV I is its localization within the virion of the hepatotropic/neurotropic A59 strain of MHV.

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Background: Ataxia telangiectasia is a multisystem disorder with progressive neurodegeneration. Corticosteroids can improve neurological functioning in patients with the disorder but adrenal suppression and symptom recurrence on treatment discontinuation has limited their use, prompting the development of novel steroid delivery systems. The aim of the ATTeST study was to evaluate the efficacy and safety of intra-erythrocyte delivery of dexamethasone sodium phosphate compared with placebo in children with ataxia telangiectasia.

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Objective: To assess the capacity of fetal pancreatic size, before standard blood glucose testing for screening and diagnosis, to predict maternal gestational diabetes mellitus (GDM).

Methods: This was a retrospective cohort study of low-risk pregnant women recruited during routine second-trimester fetal anatomical screening at 20-25 weeks' gestation at two ultrasound units in Israel between 2017 and 2020. The predictive performance of fetal pancreatic circumference ≥ 80 and ≥ 90 centiles and glucose challenge test (GCT) was examined for the outcome of GDM.

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The animal origin of SARS-CoV-2 remains elusive, lacking a plausible evolutionary narrative that may account for its emergence. Its spike protein resembles certain segments of BANAL-236 and RaTG13, two bat coronaviruses considered possible progenitors of SARS-CoV-2. Additionally, its spike contains a furin motif, a common feature of rodent coronaviruses.

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  • Although the Omicron variant of SARS-CoV-2 has many mutations, the backbone of its spike protein remains largely the same, providing a stable target for vaccine design.
  • Researchers created several subunit vaccines using this stable backbone along with various receptor-binding domains from different SARS-CoV-2 variants to test their immune response capabilities.
  • The S-6P-Delta-RBD vaccine showed strong effectiveness, generating broad neutralizing antibodies and offering complete protection against severe outcomes from Delta and Omicron infections in mice, indicating its potential as a universal COVID-19 vaccine.
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