Publications by authors named "Ledesma D"

Article Synopsis
  • Fossil identification is crucial for understanding the impact of environmental changes on ancient species and communities.
  • The study uses an apomorphic identification framework to analyze lizard remains from Hall's Cave in Central Texas, revealing at least 11 lizard taxa, including five not previously known from the site.
  • This research aims to standardize fossil lizard identification across North America, aiding future discoveries and enhancing our understanding of ancient ecosystems.
View Article and Find Full Text PDF
Article Synopsis
  • Acral lentiginous melanoma (ALM) is a rare but aggressive form of skin cancer that mainly affects palms, soles, and nails, with higher occurrences in dark-skinned populations.
  • A study assessed the expression of key proteins linked to tumor growth and treatment resistance (BCL2, MCL1, BIM, and BRAF V600E) in melanoma samples from White and Hispanic patients, noting no significant differences in protein expression between ALM and non-ALM tumors.
  • The results suggest that since both ALM and non-ALM tumors frequently express these proteins, patients might benefit from new therapies aimed at inducing apoptosis (programmed cell death).
View Article and Find Full Text PDF
Article Synopsis
  • Granulomatous Mycosis Fungoides (GMF) is a rare and severe type of mycosis fungoides that features a granulomatous infiltrate and generally has worse outcomes than typical mycosis fungoides.
  • The study investigated immune responses in GMF and Mycosis Fungoides with Large Cell Transformation (MFLCT) by examining various markers in skin biopsies from 49 patients.
  • Findings indicated that patients with GMF showed distinct immune profiles, including increased Tbet, RORγT, and PD-L1, while certain factors like low levels of RORγT and advanced disease stage correlated with poorer survival rates.
View Article and Find Full Text PDF

We aimed to determine Japanese metastatic castration resistant prostate cancer (CRPC) patients' Ra-223 treatment experience. Patients answered the Cancer Therapy Satisfaction Questionnaire (CTSQ domains: Satisfaction with Therapy [SWT], Expectations of Therapy [ET], Feelings about Side Effects [FSE]), the Memorial Anxiety Scale for Prostate Cancer (MAX-PC) and the FACT-Bone Pain (FACT-BP) Questionnaire at baseline, during (vists 3 and 5) and after treatment (end of observation; EOO). Data from 72 patients were included.

View Article and Find Full Text PDF
Article Synopsis
  • Enfortumab vedotin (EV) is a targeted therapy for urothelial carcinoma, and this study evaluates its effectiveness for treating certain skin tumors by assessing Nectin-4 expression.
  • Researchers analyzed various skin adnexal carcinomas and benign tumors through immunohistochemical staining, finding that malignant tumors had significantly higher Nectin-4 expression than benign ones.
  • The study concludes that since many cutaneous adnexal carcinomas, particularly sebaceous carcinomas, exhibit high Nectin-4 levels, EV could be a viable treatment option for these cancers.
View Article and Find Full Text PDF

Japanese patients with prostate cancer are typically treated with primary androgen deprivation therapy (ADT), most commonly administered as a combination of a luteinizing hormone-releasing hormone (LHRH) agonist and an antiandrogen (AA). Since LHRH agonists and AA therapy can be maintained for several years, the long-term effects of these treatments on patients must be carefully considered, including the risk of concomitant central nervous system (CNS) conditions which could affect treatment choices. To describe CNS-related concomitant conditions during ADT and/or AA treatment and the subsequent healthcare resource utilization in Japanese nonmetastatic castration-resistant prostate cancer (nmCRPC) patients.

View Article and Find Full Text PDF
Article Synopsis
  • - The study analyzed immune and cancer-related gene expression in liver biopsies from 107 patients with NAFLD, revealing significant differences in gene expression between fibrosis stages F3 and F4, with 162 genes linked to cirrhosis.
  • - A correlation was found between fibrosis progression and 91 genes, with 21 genes linked to faster progression to higher fibrosis stages identified in a separate group of patients; a six-gene signature was effective in detecting progressors among early-stage NAFLD patients.
  • - Immune cell analyses showed that fibrotic regions had more CD3 T cells than CD68 macrophages, with a notable increase in CD3 memory T cells and regulatory T cells as fibrosis worsened, alongside
View Article and Find Full Text PDF

Introduction And Objectives: Despite medical advances, mortality after ST-elevation myocardial infarction (STEMI) remains high. Women are often underrepresented in trials and registries, limiting knowledge of their management and prognosis. It is unknown whether life expectancy in women of all ages treated with primary percutaneous coronary intervention (PPCI) is similar to that in a reference population free of the disease.

View Article and Find Full Text PDF

Paravalvular leakage (PVL) is yet a potential and serious complication after transcatheter aortic valve replacement. Percutaneous PVL closure may be the treatment of choice upon failure of balloon postdilation in patients with excessive surgical risk. If the retrograde approach fails, an antegrade strategy might provide the solution.

View Article and Find Full Text PDF

To understand the fate of antibiotics in the aquatic environment, we need to evaluate to which extent the following processes contribute to the overall antibiotic attenuation: adsorption to river sediment, biodegradation, hydrolysis and photodegradation. A laboratory scale mesocosm experiment was conducted in 10 L reactors filled with river sediment and water. The reactors were spiked with four classes of antibiotics (fluoroquinolones, macrolides, sulfonamides, tetracyclines), as well as clindamycin and trimethoprim.

View Article and Find Full Text PDF

Immune checkpoint blockade (ICB) has revolutionized cancer treatment, yet quality of life and continuation of therapy can be constrained by immune-related adverse events (irAEs). Limited understanding of irAE mechanisms hampers development of approaches to mitigate their damage. To address this, we examined whether mice gained sensitivity to anti-CTLA-4 (αCTLA-4)-mediated toxicity upon disruption of gut homeostatic immunity.

View Article and Find Full Text PDF

Objective: The study objectives were to understand how patients view the quality of life in non-metastatic castration-resistant prostate cancer (nmCRPC), including unmet needs and what patients consider most important in treatment outcomes. A gap analysis was conducted on existing patient-reported outcomes (PROs) measures versus what is missing from the patient perspective, to guide future development of PRO-based real-world evidence for nmCRPC in Japan. A conceptual model for nmCRPC Japanese patients' HRQOL was also created.

View Article and Find Full Text PDF

Ambystoma (Tschudi, 1838) represents a speciose clade of salamanders that are found across much of North America. Fossils referred to Ambystoma are reported from early Cenozoic deposits and are common in Quaternary fossil deposits. Most fossils identified as Ambystoma are isolated vertebrae.

View Article and Find Full Text PDF

From May through July 2020, Arizona was a global hotspot for new COVID-19 cases. In response to the surge of cases, local public health departments looked for innovative ways to form external partnerships to address their staffing needs. In collaboration with the Maricopa County Department of Public Health, the Arizona State University Student Outbreak Response Team (SORT) created and implemented a virtual call center to conduct public health case investigations for COVID-19.

View Article and Find Full Text PDF

This qualitative study aimed to reveal symptoms and impacts among bone metastatic castration-resistant prostate cancer (or mCRPC) Japanese patients, prior to Radium-223 (Ra-223) treatment. Twenty-three mCRPC patients designated to receive Ra-223 and three treating physicians (Ra-223 prescribers) in Japan, were interviewed. All interview data were assessed for concept frequency, themes and saturation.

View Article and Find Full Text PDF

Background: Advances in molecular biology and genetics have contributed to breakthrough treatments directed at specific pathways associated with the development of cancer. Small-molecule inhibitors (Nibs) aimed at a variety of cellular pathways have been efficacious; however, they are associated with significant dermatologic toxicities.

Methods: We conducted a comprehensive review of dermatologic toxicities associated with Nibs categorized into the following five groups: (a) mitogen-activated protein kinase; (b) growth factor/multi-tyrosine kinase; (c) cell division/DNA repair; (d) signaling associated with myeloproliferative neoplasms; and (e) other signaling pathways.

View Article and Find Full Text PDF

Background: Alligator lizards (Gerrhonotinae) are a well-known group of extant North American lizard. Although many fossils were previously referred to Gerrhonotinae, most of those fossils are isolated and fragmentary cranial elements that could not be placed in a precise phylogenetic context, and only a handful of known fossils are articulated skulls. The fossil record has provided limited information on the biogeography and phylogeny of Gerrhonotinae.

View Article and Find Full Text PDF

Research is uncovering the repercussions of the COVID-19 pandemic on the mental and emotional state of various populations around the world. It is of particular interest to this study to explore how the pandemic has affected psychologists conducting therapy with clients in distress during this time. A qualitative approach was used to analyse the narratives of eight Filipino psychologists who were living in community quarantine while conducting therapy from March to December 2020.

View Article and Find Full Text PDF

Objectives: With novel antiandrogen treatments of varying clinical benefits and risks becoming available, this study investigates how patients with castration-resistant prostate cancer (CRPC) value differences in treatment characteristics.

Design: Cross-sectional observational study.

Setting: A discrete choice experiment was conducted.

View Article and Find Full Text PDF

Background: There are limited data on intra- and interspecific osteological variation for many squamate clades. Those data are relevant for phylogenetic analyses that use osteological characters and for apomorphic identifications of fossils. We investigate whether morphological features in the skulls of extant gerrhonotine lizards can be used to distinguish taxa at the species- and genus-level and assess whether newly discovered intra- and interspecific osteological variation alters the utility of previously reported apomorphic features.

View Article and Find Full Text PDF

We analyzed the efficacy and mechanistic interactions of PARP inhibition (PARPi; olaparib) and CDK4/6 inhibition (CDK4/6i; palbociclib or abemaciclib) combination therapy in castration-resistant prostate cancer (CRPC) and neuroendocrine prostate cancer (NEPC) models. We demonstrated that combined olaparib and palbociblib or abemaciclib treatment resulted in synergistic suppression of the p-Rb1-E2F1 signaling axis at the transcriptional and posttranslational levels, leading to disruption of cell-cycle progression and inhibition of E2F1 gene targets, including genes involved in DDR signaling/damage repair, antiapoptotic family members ( and ), , and neuroendocrine differentiation (NED) markers and In addition, olaparib + palbociclib or olaparib + abemaciclib combination treatment resulted in significantly greater growth inhibition and apoptosis than either single agent alone. We further showed that PARPi and CDK4/6i combination treatment-induced CDK1 inhibition suppressed p-S70-BCL-2 and increased caspase cleavage, while CDK1 overexpression effectively prevented the downregulation of p-S70-BCL-2 and largely rescued the combination treatment-induced cytotoxicity.

View Article and Find Full Text PDF

With improved healthcare, the Down syndrome (DS) population is both growing and aging rapidly. However, with longevity comes a very high risk of Alzheimer's disease (AD). The LIFE-DSR study (NCT04149197) is a longitudinal natural history study recruiting 270 adults with DS over the age of 25.

View Article and Find Full Text PDF

Purpose: Sixteen percent (16%) of patients with castration-resistant prostate cancer (CRPC) show no bone metastasis at diagnosis. However, 33% will become metastatic within 2 years. The goal of treatment in patients with nonmetastatic CRPC (nmCRPC), therefore, is to delay symptomatic metastases without undue toxicity.

View Article and Find Full Text PDF