Glycosylation of ceramide synthase 6 is required for its activity.

Sphingolipids play key roles in membrane structure and cellular signaling. Ceramide synthase (CerS)-generated ceramide is implicated in cellular stress responses and induction of apoptosis. Ceramide and other sphingolipids are linked to the induction of ER stress response pathways.

Examining the Relationship Between Rurality, Risk Perception, and COVID-19 Vaccine Willingness Among Rural Latinos in Arizona and California.

This study aimed to investigate the relationship between rurality and risk perception of getting or transmitting COVID-19 and willingness to get the COVID-19 vaccine in a sample of Latinos across Arizona and California's Central Valley (n = 419). The results revealed that rural Latinos are more concerned about getting and transmitting COVID-19, but less willing to get vaccinated. Our findings suggest that perceptions of risk alone do not play a sole role in influencing risk management behavior among rural Latinos.

Evaluating Demographic Data to Improve Confidence in Equity Analytics in a Children's Hospital.

Unlabelled: Healthcare institutions are placing greater emphasis on equitable care. To accurately track and validate equity metrics, Akron Children's Hospital evaluated how key fields are collected, analyzed, and visualized throughout the organization. Standardized recommendations in this area vary, and this investigation provided specific ways to advance analytics in this field.

Employing Transcranial Magnetic Stimulation in a Resource Limited Environment to Establish Brain-Behavior Relationships.

Neuroimaging is typically perceived as a resource demanding discipline. While this is the case in certain circumstances, institutions with limited resources have historically contributed significantly to the field of neuroscience, including neuroimaging. In the study of self-deception, we have successfully employed single-pulse TMS to determine the brain correlates of abilities including overclaiming and self-enhancement.

Corticospinal Excitability during a Perspective Taking Task as Measured by TMS-Induced Motor Evoked Potentials.

Only by understanding the ability to take a third-person perspective can we begin to elucidate the neural processes responsible for one's inimitable conscious experience. The current study examined differences in hemispheric laterality during a first-person perspective (1PP) and third-person perspective (3PP) taking task, using transcranial magnetic stimulation (TMS). Participants were asked to take either the 1PP or 3PP when identifying the number of spheres in a virtual scene.

Illness Representations of Hypertension among Nepali Patients at a Tertiary Care Hospital Clinic: An exploratory survey.

Background: The prevalence of stage 2 hypertension approaches one-third in adult Nepalis and despite inexpensive effective treatment, long-term compliance is poor. World-wide, a major impediment is the incongruity between hypertension and patients' symptom-based illness representations. The Common-Sense Model of Self-regulation was used to investigate Nepali illness representations through open-ended interviews of patients with hypertension.

Clinical practice to address tamoxifen nonadherence.

The primary and secondary benefits of tamoxifen as adjuvant therapy in women with hormone-receptor-positive breast cancer are substantial: a 1% decrease in the risk of death each year for 10 years with each additional year of treatment during the first 5 years. Considerable data, however, indicate that these benefits are lost to many patients because of treatment nonadherence. Nonadherence is examined within the framework of the Common-Sense Model of Self-Regulation to describe patients' models of disease and treatment that organize their thinking and behavior, and the crucial role of the practitioner in addressing and altering these models.

The Estimating effectiveness from efficacy taxonomy (EFFECT): A tool to estimate the real-world impact of health interventions.

Aims: To develop and pilot test a taxonomy that empirically estimates health intervention effectiveness from efficacy data.

Methods: We developed a taxonomy to score health interventions across 11 items on a scale from 0-100. The taxonomy was pilot-tested in efficacy and effectiveness diabetes prevention studies identified in two separate systematic reviews; here, the face validity, inter-rater reliability and factor structure of the taxonomy were established.

Interaction of Trastuzumab with biomembrane models at air-water interfaces mimicking cancer cell surfaces.

Trastuzumab (Tmab) is a monoclonal antibody administered as targeted therapy for HER2-positive breast cancer whose molecular interactions at the HER2 receptor microenvironment are not completely clarified yet. This paper describes the influence of Tmab in the molecular organization of films of biological-relevant molecules at the air water interface. For that, we spread components of tumorigenic and non-tumorigenic cells directly on the air-water interface.

A single-cell survey of the human first-trimester placenta and decidua.

The placenta and decidua interact dynamically to enable embryonic and fetal development. Here, we report single-cell RNA sequencing of 14,341 and 6754 cells from first-trimester human placental villous and decidual tissues, respectively. Bioinformatic analysis identified major cell types, many known and some subtypes previously unknown in placental villi and decidual context.

Global Diabetes Prevention Interventions: A Systematic Review and Network Meta-analysis of the Real-World Impact on Incidence, Weight, and Glucose.

Objective: Understanding the real-world impacts of lifestyle modification (LSM) for diabetes prevention is imperative to inform resource allocation. The purpose of this study was to synthetize global evidence on the impact of LSM strategies on diabetes incidence and risk factors in one parsimonious model.

Research Design And Methods: PubMed, Embase, Cochrane Library, and ClinicalTrials.

Long-term Sustainability of Diabetes Prevention Approaches: A Systematic Review and Meta-analysis of Randomized Clinical Trials.

Importance: Diabetes prevention is imperative to slow worldwide growth of diabetes-related morbidity and mortality. Yet the long-term efficacy of prevention strategies remains unknown.

Objective: To estimate aggregate long-term effects of different diabetes prevention strategies on diabetes incidence.

Inositol Phosphorylceramide: Distinctive Sphingoid Base Composition.

Inositol phosphorylceramide (IPC), the major sphingolipid in the genus but not found in mammals, is considered a potentially useful target for chemotherapy against leishmaniasis. is endemic in Latin America and causes American tegumentary leishmaniasis. We demonstrated that IPCs are localized internally in parasites, using a specific monoclonal antibody.

Characterization and role of the 3-methylglutaconyl coenzyme A hidratase in Trypanosoma brucei.

Trypanosoma brucei, the agent of African Trypanosomiasis, is a flagellated protozoan parasite that develops in tsetse flies and in the blood of various mammals. The parasite acquires nutrients such as sugars, lipids and amino acids from their hosts. Amino acids are used to generate energy and for protein and lipid synthesis.

Evaluating mesenchymal stem cell therapy for sepsis with preclinical meta-analyses prior to initiating a first-in-human trial.

Evaluation of preclinical evidence prior to initiating early-phase clinical studies has typically been performed by selecting individual studies in a non-systematic process that may introduce bias. Thus, in preparation for a first-in-human trial of mesenchymal stromal cells (MSCs) for septic shock, we applied systematic review methodology to evaluate all published preclinical evidence. We identified 20 controlled comparison experiments (980 animals from 18 publications) of sepsis models.

Structural diversity and biological significance of glycosphingolipids in pathogenic and opportunistic fungi.

Glycosphingolipids (GSLs) are ubiquitous membrane components and have key roles in biological systems, acting as second messengers or modulators of signal transduction by affecting several events, ranging from cell adhesion, cell growth, cell motility, regulation of apoptosis and cell cycle. Over the last 20 years our laboratory and other research groups determined the glycan and ceramide structures of more than 20 GSLs from several pathogenic/opportunistic fungi, using a combination of gas chromatography, mass spectrometry, nuclear magnetic resonance as well as other immunochemical and biochemical techniques. Fungal GSLs can be divided in two major classes: neutral GSLs, galactosyl- and glucosylceramide (GlcCer), and acidic GSLs, the glycosylinositol-phosphorylceramides (GIPCs).

Glycolipid sensing and innate immunity in paracoccidioidomycosis.

Distinct glycolipid profiles are described in microorganisms, which have been shown to modulate the innate immune system. We tested the hypothesis that glycosphingolipids from Paracoccidioides brasiliensis have immunomodulatory properties on monocytes and dendritic cells of two groups of healthy individuals, one cured of paracoccidioidomycosis in the past (CUR-I) and the other nonexposed to P. brasiliensis (HNE-I).

Tridimensional ultrastructure and glycolipid pattern studies of Trypanosoma dionisii.

Trypanosoma (Schizotrypanum) dionisii is a non-pathogenic bat trypanosome closely related to Trypanosoma cruzi, the etiological agent of Chaga's disease. Both kinetoplastids present similar morphological stages and are able to infect mammalian cells in culture. In the present study we examined 3D ultrastructure aspects of the two species by serial sectioning epimastigote and trypomastigote forms, and identified common carbohydrate epitopes expressed in T.

Myriocin, a serine palmitoyltransferase inhibitor, blocks cytokinesis in Leishmania (Viannia) braziliensis promastigotes.

We studied the effect of myriocin, an inhibitor of serine palmitoyltransferase, on cultured Leishmania (Viannia) braziliensis promastigotes. Myriocin significantly reduced synthesis of inositol phosphorylceramide, the major sphingolipid expressed in promastigotes as characterized by thin layer chromatography and electrospray ionization mass spectrometry. Log-phase promastigotes treated with 1 μM myriocin showed a 52% reduction in growth rate and morphological alterations such as more rounded shape and shorter flagellum.

Paracoccidioides brasiliensis induces secretion of IL-6 and IL-8 by lung epithelial cells. Modulation of host cytokine levels by fungal proteases.

Paracoccidioides brasiliensis is a pathogenic, dimorphic fungus that causes paracoccidioidomycosis, a systemic human mycosis that is highly prevalent in Latin America. In this study, we demonstrated that P. brasiliensis yeasts induced interleukin (IL)-8 and IL-6 secretion by human lung epithelial A549 cells.