Publications by authors named "J.R. Martin"

Small fetuses, with estimated fetal weight (EFW) below the tenth percentile, are classified as fetal growth restriction (FGR) or small for gestational age (SGA) based on prenatal ultrasound. FGR fetuses have a greater risk of stillbirth and perinatal complications and may benefit from serial ultrasound scans to guide early delivery. Abnormal serum angiogenic factors, such as the soluble fms-like tyrosine kinase-1 (sFlt-1):placental growth factor (PlGF) ratio, have shown potential to more accurately distinguish FGR from SGA, with fewer false positives.

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  • Exploiting TRAILR2 activation could improve cancer treatments, but past therapies faced issues like low effectiveness and liver damage.
  • The new TR2/CDH3 BAB antibody targets both CDH3 and TRAILR2, enhancing apoptosis specifically in tumor cells expressing CDH3, showcasing effectiveness in various cancers and CRISPR-engineered models.
  • In pancreatic cancer, where current treatments are lacking, TR2/CDH3 BAB shows promise, especially when used with other chemotherapy drugs, indicating potential for effective cancer therapy with a good safety profile.
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The spectrum of congenital and infantile masses of the head and neck is broad, including developmental and neoplastic entities. The diseases encountered in this vulnerable patient population differ substantially from those in older children and adults. Familiarity with the types of encountered masses, typical imaging characteristics, and expected clinical course is critical for radiologists who care for pregnant women (fetuses) and infants.

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  • Immune checkpoint inhibitors, a type of cancer treatment, can cause serious side effects, including immune-related myocarditis (irMyocarditis), which can be fatal.
  • Researchers studied immune responses in the heart, tumor, and blood of 28 patients with irMyocarditis using advanced techniques like single-cell RNA sequencing and T-cell receptor (TCR) sequencing.
  • Their findings showed an increase in certain immune cells in the heart tissue of irMyocarditis patients and identified specific TCR clones associated with severe cases, shedding light on the disease's biology and potential biomarkers.
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  • Researchers are merging unstructured patient data with structured health records to create the MSK-CHORD dataset, consisting of varied cancer types from nearly 25,000 patients at Memorial Sloan Kettering Cancer Center.
  • This dataset allows for in-depth analysis of cancer outcomes using advanced techniques like natural language processing, revealing new relationships that smaller datasets may not show.
  • Using MSK-CHORD for machine learning models, findings suggest that incorporating features from these unstructured texts can better predict patient survival than relying solely on genomic data or cancer staging.
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Background And Objectives: CSF biomarkers of Aβ42 and phosphorylated tau (p-tau181) are used clinically for the detection of Alzheimer disease (AD) pathology during life. CSF biomarker validation studies have largely used clinical diagnoses and/or amyloid PET imaging as the reference standard. The few existing CSF-to-autopsy studies have been restricted to late-stage AD.

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  • - Blood-based biomarkers are being explored to detect brain injuries from repetitive head impacts, specifically in former football players, by analyzing plasma levels of various proteins like tau and amyloid.
  • - A study involving 180 former football players and 60 control participants found that specific biomarkers (p-tau181 and p-tau231) were significantly elevated in the football players, indicating potential brain damage linked to their sport.
  • - The findings suggest that certain plasma proteins (p-tau, GFAP, NfL) could help in understanding and identifying neurological issues related to head impacts, with younger players showing more severe biomarker changes.
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  • Researchers aim to better understand the protein-coding genome due to its importance in human health, while questioning what previous genomic studies may have overlooked regarding non-canonical open reading frames (ncORFs).
  • Over the last ten years, ncORFs have shown potential relevance in human cell types and diseases, but their impact on the human proteome was previously unclear, prompting a collaborative effort to analyze their protein-level evidence.
  • The study found that 25% of analyzed ncORFs contribute to translated proteins, resulting in over 3,000 new peptides from extensive mass spectrometry data, and established an annotation framework and public tools to support ongoing research in this area.
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  • Imaging hydrogen motion at ultrafast timescales is difficult due to the low mass and small scattering cross-section of hydrogen atoms and molecules.
  • The study proposes a new method called time- and momentum-resolved photoelectron diffraction (TMR-PED) to address these challenges, demonstrated through the dissociation of a neutral hydrogen molecule from methanol dication.
  • TMR-PED allows for direct imaging of hydrogen dynamics by analyzing molecular-frame photoelectron angular distributions, with supporting experiments showcasing the method's potential effectiveness at few-femtosecond resolution.
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  • The study investigated the link between elevated systolic blood pressure (SBP) and neurocognitive performance in adolescents, focusing on measures like auscultatory SBP and ambulatory SBP, along with cardiovascular health risk indicators.
  • It involved 365 adolescents, averaging 15.5 years old, from various academic medical centers in the U.S., analyzing their cognitive abilities like nonverbal IQ and attention, considering factors like maternal education.
  • Results showed that higher SBP corresponded to lower nonverbal IQ and verbal attention scores, indicating that even slight elevations in blood pressure can negatively affect adolescent cognitive functions, suggesting a need for further research on these implications for clinical care.
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  • Human genetic studies reveal new insights into the biological processes of ovarian aging through rare protein-coding variants in a large study of women.
  • The genes identified (e.g., SAMHD1 and ZNF518A) show stronger effects on reproductive lifespan and cancer risk compared to common variants, with some variants linked to earlier menopause.
  • The research suggests a connection between genetic factors influencing ovarian aging and an increased incidence of de novo mutations, highlighting the importance of DNA damage response in fertility.
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Background: Injured patients have high rates of uninsurance, which is associated with worse outcomes. Insurance linkage programs that connect patients to Medicaid coverage can prevent catastrophic costs for patients. Less is known about the long-term impact of insurance enrollment.

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Iron accumulation in tumors contributes to disease progression and chemoresistance. Although targeting this process can influence various hallmarks of cancer, the immunomodulatory effects of iron chelation in the tumor microenvironment are unknown. Here, we report that treatment with deferiprone, an FDA-approved iron chelator, unleashes innate immune responses that restrain ovarian cancer.

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Background: We identified peripherally limited patients using cardiopulmonary exercise testing and measured skeletal muscle oxygen transport and utilization during invasive single leg exercise testing to identify the mechanisms of the peripheral limitation.

Methods: Forty-five patients with heart failure with preserved ejection fraction (70±7 years, 27 females) completed seated upright cardiopulmonary exercise testing and were defined as having a (1) peripheral limitation to exercise if cardiac output/oxygen consumption (VO) was elevated (≥6) or 5 to 6 with a stroke volume reserve >50% (n=31) or (2) a central limitation to exercise if cardiac output/VO slope was ≤5 or 5 to 6 with stroke volume reserve <50% (n=14). Single leg knee extension exercise was used to quantify peak leg blood flow (Doppler ultrasound), arterial-to-venous oxygen content difference (femoral venous catheter), leg VO, and muscle oxygen diffusive conductance.

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  • The study investigates the effectiveness of post-ablation ventricular tachycardia (VT) inducibility through programmed ventricular stimulation (PVS) as a predictor for recurrence and survival outcomes in high-risk patients undergoing VT ablation.
  • A retrospective analysis was conducted on 123 high-risk patients who underwent VT ablation, revealing no significant differences in long-term outcomes between those with no VT inducibility and other response groups.
  • The findings suggest that post-ablation PVS results do not reliably predict survival or recurrence in high-risk VT ablation patients, challenging its current use as a procedural endpoint.
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Introduction: This study examines whether being a client in the Northwest Ohio Pathways HUB program reduces stress and improves mental wellbeing for perinatal mothers. The HUB works to improve health by connecting mothers to community health workers (CHWs) who assess mothers' risk factors and connect them to evidence-based care pathways to reduce known risks associated with adverse birth outcomes.

Methods: A one-time survey of 119 mothers in the program and monthly semi-structured interviews with 41 mothers, totaling 220 interviews.

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  • Racial and ethnic minorities are significantly underrepresented in cancer clinical trials, particularly due to restrictive eligibility criteria that often exclude patients who might benefit the most from treatments.
  • A study found that up to 24% of patients with diffuse large B-cell lymphoma would be disqualified from recent trials based on five specific lab criteria, leading to worse outcomes and increased deaths among these excluded groups.
  • Analysis revealed that Black/African American and Hispanic patients experienced higher rates of ineligibility compared to non-Hispanic White patients, highlighting a critical need to reevaluate how eligibility criteria are established to ensure equitable access to clinical trials across all demographics.
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  • Pulsed field ablation (PFA) is a new method for treating atrial fibrillation (AF) that focuses on ablating heart tissue while minimizing harm to nearby structures.
  • In the MANIFEST-17K study, data from 106 centers involved 17,642 patients and showed no serious complications like esophageal damage, with only a 1% major complication rate.
  • The results suggest that PFA has a strong safety profile and may change how AF is treated, compared to traditional thermal ablation methods.
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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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  • During COVID-19, hospitality businesses faced closures, while sales of alcohol surged, leading to health concerns, prompting a need for supportive yet sustainable policies post-pandemic.
  • The study evaluated different 'sweetspot' policy areas like pricing interventions and online sales regulations through literature reviews and expert workshops, finding that these can help public health without significantly harming the hospitality sector.
  • Evidence suggests that increasing the price of cheap alcohol and regulating online sales could effectively reduce alcohol-related harm, while initiatives like reduced late-night hours may help with violence, but need careful implementation and resources.
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Background And Objectives: Multiple sclerosis (MS) is considered a prototypic autoimmune disease of the CNS. It is the leading cause of chronic neurologic disability in young adults. Proinflammatory B cells and autoreactive T cells both play important roles in its pathogenesis.

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Lesions of the meniscocapsular junction and the meniscotibial ligament (MTL) of the posterior horn of the medial meniscus are common with knee ligamentous injuries and associated with residual rotational instability if left untreated. MTL avulsion from its tibial attachment has never been described among different types of meniscocapsular disruptions so far. Both diagnosis and treatment of such an injury can be challenging.

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Background: Bortezomib, lenalidomide, and dexamethasone (VRd) is a preferred first-line treatment option for patients with newly diagnosed multiple myeloma. Whether the addition of the anti-CD38 monoclonal antibody isatuximab to the VRd regimen would reduce the risk of disease progression or death among patients ineligible to undergo transplantation is unclear.

Methods: In an international, open-label, phase 3 trial, we randomly assigned, in a 3:2 ratio, patients 18 to 80 years of age with newly diagnosed multiple myeloma who were ineligible to undergo transplantation to receive either isatuximab plus VRd or VRd alone.

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Background: Adjustment for race is discouraged in lung-function testing, but the implications of adopting race-neutral equations have not been comprehensively quantified.

Methods: We obtained longitudinal data from 369,077 participants in the National Health and Nutrition Examination Survey, U.K.

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  • QS-21 is a clinically approved saponin-based vaccine adjuvant, but its extraction is challenging due to its complex structure and limited supply from natural sources or low-yield chemical synthesis.
  • Researchers have achieved the complete biosynthesis of QS-21 and its precursors in engineered yeast strains by carefully tuning the yeast's metabolic pathways and expressing 38 foreign enzymes from six different organisms.
  • This innovative microbial production method not only simplifies the production of QS-21 but also allows for the creation of structural analogues, paving the way for improved vaccine adjuvant design based on structure-activity relationships.
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