Phase II clinical trial assessing the efficacy of enzalutamide in advanced non-resectable granulosa cell ovarian tumors: The GREKO III study (GETHI2016-01).

Background: Granulosa cell ovarian tumors (GCT) are orphan disease with limited treatments. Hormone therapy is a potential treatment, due to the overexpression of hormone receptors in most tumors. This study explores the activity of the antiandrogen, enzalutamide, in metastatic cases.

Tooth loss and depression in Chilean participants of the National Health Survey 2016-2017: Oral and social functions mediation analysis.

Background: Previous studies have indicated the association between poor oral health and depression in adults. This study evaluated oral and social functions contribution to the association between tooth loss and depressive symptoms in Chilean individuals.

Methods: We used data from the Chilean National Health Survey.

In Vivo Detection of Infections Using Radiolabeled Antibodies Specific for Bacterial Toxins.

Purpose: The Gram-positive bacterium is one of the leading causes of infection in humans. The lack of specific noninvasive techniques for diagnosis of staphylococcal infection together with the severity of its associated complications support the need for new specific and selective diagnostic tools. This work presents the successful synthesis of an immunotracer that targets the -toxin released by .

Comparison of digitally assessed quality of posterior crown preparations performed with and without previous practice on patient-specific three-dimensional-printed teeth models.

Introduction: Three-dimensional (3D)-printing technology can provide customizable simulations, but its effects on patient care quality have not been well studied. This study aimed to assess the impact of practicing with patient-specific 3D-printed teeth models on the quality of patients' dental preparations performed by students transitioning to clinical training. Accordingly, the quality of posterior crown preparations was evaluated by objectively analyzing digital scans and grades in two groups: the study group, which practiced beforehand with patient-specific 3D-printed teeth models, and the control group, which did not practice with these models.

Curcumin encapsulated in milk small extracellular vesicles as a nanotherapeutic alternative in experimental chronic liver disease.

Curcumin is a natural molecule widely tested in preclinical and clinical studies due to its antioxidant and anti-inflammatory activity. Nevertheless, its high hydrophobicity and low bioavailability limit in vivo applications. To overcome curcumin´s drawbacks, small extracellular vesicles (sEVs) have emerged as potential drug delivery systems due to their non-immunogenicity, nanometric size and amphiphilic composition.

5-year clinical performance of posterior bulk-filled resin composite restorations: A double-blind randomized controlled trial.

Objectives: The aim of this double-blind, and randomized controlled clinical trial was to evaluate the 5-year clinical performance of posterior resin composite restorations placed with the incremental filling technique [IF] or the bulk-fill technique [BF]. Two different adhesive systems were used: etch-&-rinse (ER) or self-etch (SE).

Methods: Posterior dental teeth of 72 participants (n = 236), with a cavity depth of at least 3 mm, were randomly divided into four groups.

Isolation of goat milk small extracellular vesicles by novel combined bio-physical methodology.

Goat milk is notable as a cost-effective source of exosomes, also known as small extracellular vesicles (sEVs). These nanoparticle-like structures are naturally secreted by cells and have emerged as potential diagnostic agents and drug delivery systems, also supported by their proven therapeutic effects. However, the complexity of goat milk and the lack of standardized protocols make it difficult to isolate pure sEVs.

Dual-labeled nanoparticles based on small extracellular vesicles for tumor detection.

Background: Small extracellular vesicles (sEVs) are emerging natural nanoplatforms in cancer diagnosis and therapy, through the incorporation of signal components or drugs in their structure. However, for their translation into the clinical field, there is still a lack of tools that enable a deeper understanding of their in vivo pharmacokinetics or their interactions with the cells of the tumor microenvironment. In this study, we have designed a dual-sEV probe based on radioactive and fluorescent labeling of goat milk sEVs.

Goat Milk Exosomes As Natural Nanoparticles for Detecting Inflammatory Processes By Optical Imaging.

Exosomes are cell-derived nanovesicles with a proven intercellular signaling role in inflammation processes and immune response. Due to their natural origin and liposome-like structure, these nanometer-scale vesicles have emerged as novel platforms for therapy and diagnosis. In this work, goat milk exosomes are isolated and fully characterized in terms of their physicochemical properties, proteomics, and biochemical profile in healthy mice, and used to detect inflammatory processes by optical imaging.

Cardiac Extracellular Matrix Hydrogel Enriched with Polyethylene Glycol Presents Improved Gelation Time and Increased On-Target Site Retention of Extracellular Vesicles.

Stem-cell-derived extracellular vesicles (EVs) have demonstrated multiple beneficial effects in preclinical models of cardiac diseases. However, poor retention at the target site may limit their therapeutic efficacy. Cardiac extracellular matrix hydrogels (cECMH) seem promising as drug-delivery materials and could improve the retention of EVs, but may be limited by their long gelation time and soft mechanical properties.

Active monitoring of early safety of Sputnik V vaccine in Buenos Aires, Argentina.

This study describes the incidence of early events supposedly attributable to vaccination or immunization (ESAVI) that occurred in healthcare workers who had been inoculated with the first component of the Sputnik V vaccine. Safety at 72 h post-immunization was analyzed based on a self-reported form. Between January 5 and January 20, 2021, in Buenos Aires, Argentina, a total of 707 healthcare workers (median age 35 yrs, female 67%) were vaccinated.

Covalently Labeled Fluorescent Exosomes for In Vitro and In Vivo Applications.

The vertiginous increase in the use of extracellular vesicles and especially exosomes for therapeutic applications highlights the necessity of advanced techniques for gaining a deeper knowledge of their pharmacological properties. Herein, we report a novel chemical approach for the robust attachment of commercial fluorescent dyes to the exosome surface with covalent binding. The applicability of the methodology was tested on milk and cancer cell-derived exosomes (from U87 and B16F10 cancer cells).

Enzyme production by Candida albicans and Candida dubliniensis in periodontal HIV-positive patients receiving and not receiving antiretroviral therapy.

Candida dubliniensis (Cd) and Candida albicans (Ca) are the most frequently isolated yeasts in HIV+ patients. Some of the enzymes produced by these yeasts are considered virulence factors since they contribute to pathogenicity of Candida spp. The aim of the present study was to compare production of enzymes such as phospholipase (Ph), proteinase (P), and hemolysin (H) by Cd and Ca strains isolated from periodontal HIV-positive patients receiving and not receiving highly active antiretroviral therapy (HAART).

Radioactive Labeling of Milk-Derived Exosomes with Tc and In Vivo Tracking by SPECT Imaging.

Over the last decade, exosomes from diverse biological sources have been proposed as new natural platforms in drug delivery. Translation of these nanometric tools to clinical practice requires deep knowledge of their pharmacokinetic properties and biodistribution. The pharmacokinetic properties of exosomes are sometimes evaluated using biochemical and histological techniques that are considerably invasive.

S100 negative granular cell tumor of the oral cavity: dermoscopy and surgical approach.

We report the case of a 47-year-old male patient with S100 negative granular cell tumor of the oral cavity, focusing on dermoscopic features as well as surgical approach, not previously reported in the literature. The study contributes to the literature on dermoscopy and surgical treatment for this tumor and provides a practical approach to differentiating non-neural granular cell tumors and granular cell tumors.

[Consensus statement of the Chilean endocrinological society on the role of bariatric surgery in type 2 diabetes].

Diabetes Mellitus (DM) and obesity are a public health problem in Chile. Bariatric surgery is the most effective treatment alternative to achieve a significant and sustained weight reduction in patients with morbid obesity. The results of controlled clinical trials indicate that, compared to medical treatment, surgery for obese patients with DM2 allows a better control of blood glucose and cardiovascular risk factors, reduces the need for medications and increases the likelihood for remission.

Detection of hepatitis C virus (HCV) core-specific antibody suggests occult HCV infection among blood donors.

Background: Blood transfusion safety is based on reliable donor screening for transmissible infections such as the hepatitis C virus (HCV) infection.

Study Design And Methods: A novel HCV core-specific antibody was assayed on random single donations from 2007 first-time blood donors who tested negative for anti-HCV and HCV RNA on routine screening. Sample collection broke the code between donations and donors for ethical reasons.

Placental Aromatase Is Deficient in Placental Ischemia and Preeclampsia.

Introduction: Preeclampsia is a maternal hypertensive disorder with uncertain etiology and a leading cause of maternal and fetal mortality worldwide, causing nearly 40% of premature births delivered before 35 weeks of gestation. The first stage of preeclampsia is characterized by reduction of utero-placental blood flow which is reflected in high blood pressure and proteinuria during the second half of pregnancy. In human placenta androgens derived from the maternal and fetal adrenal glands are converted into estrogens by the enzymatic action of placental aromatase.

Non-systemic juvenile idiopathic arthritis outcome after reaching clinical remission with anti-TNF-α therapy: a clinical practice observational study of patients who discontinued treatment.

TNF-alpha-blocking agents (anti-TNF) used in juvenile idiopathic arthritis (JIA) are well established; however, time to withdraw is unclear. Neither prolonged nor tapering treatment seems to influence risk of relapse. Our aim was to assess relapse percentage after anti-TNF withdrawal of our non-systemic JIA patients after reaching clinical remission.

Polymorphisms in genes coding for HSP-70 are associated with gastric cancer and duodenal ulcer in a population at high risk of gastric cancer in Costa Rica.

Background And Aims: Costa Rica has among the highest incidence and mortality rates for gastric cancer worldwide. The reasons for this are largely unknown. Polymorphisms of inflammatory response genes including genes encoding heat shock proteins (HSP) have been shown to be associated with the risk of gastric cancer in some populations.

Striated muscle involvement in experimental oral infection by herpes simplex virus type 1.

Herpes simplex virus type 1 is one of the most frequent causes of oral infection in humans, especially during early childhood. Several experimental models have been developed to study the pathogenesis of this virus but all of them employed adult animals. In this work, we developed an experimental model that uses mice younger than 4 days old, to more closely resemble human infection.

[Biogeochemical cycles in natural forest and conifer plantations in the high mountains of Colombia].

Plant litter production and decomposition are two important processes in forest ecosystems, since they provide the main organic matter input to soil and regulate nutrient cycling. With the aim to study these processes, litterfall, standing litter and nutrient return were studied for three years in an oak forest (Quercus humboldtii), pine (Pinus patula) and cypress (Cupressus lusitanica) plantations, located in highlands of the Central Cordillera of Colombia. Evaluation methods included: fine litter collection at fortnightly intervals using litter traps; the litter layer samples at the end of each sampling year and chemical analyses of both litterfall and standing litter.

Dynamics of Aβ42 reduction in plasma, CSF and brain of rats treated with the γ-secretase modulator, GSM-10h.

Background: Allosteric modulation of γ-secretase is an attractive therapeutic approach for the treatment of Alzheimer's disease. We recently identified a novel γ-secretase modulator, GSM-10h, which effectively lowers Aβ42 production in cells and in amyloid precursor protein transgenic mice.

Objective: Here, we describe the in vivo characterization of GSM-10h in a model of endogenous Aβ production.