In Vitro Cytotoxicity of Fluorinated Quaternary Ammonium Salts in Colorectal Cancer Cells and In Silico Pharmacology.

Colorectal cancer (CRC) is a multifactorial disease driven by genetic and epigenetic alterations that modulate specific metabolic pathways. Despite the availability of effective treatments like 5-fluorouracil (5-FU), pharmacological therapy for CRC still faces significant challenges, including drug resistance, toxicity, and limited specificity. Therefore, discovering new compounds remains critical to overcoming these barriers and expanding treatment options.

The secretome from human-derived mesenchymal stem cells augments the activity of antitumor plant extracts in vitro.

Cancer is understood as a multifactorial disease that involve multiple cell types and phenotypes in the tumor microenvironment (TME). The components of the TME can interact directly or via soluble factors (cytokines, chemokines, growth factors, extracellular vesicles, etc.).

Countries Response for People With Disabilities During the COVID-19 Pandemic.

Background And Objectives: During the Coronavirus disease 19 (COVID-19) pandemic, isolation and prevention measures to reduce COVID-19 contagions are essential for the care of all people; these measures should comply with the principles of inclusion and accessibility for people with disabilities (PWD), with all kinds of deficiencies and levels of dependency. Thereby, the aim of this article is to present the measures adopted for PWD or people with rehabilitation needs, for containment, mitigation, or suppression of the SARS-CoV-2 virus in different countries of all continents and of all income levels.

Methods: A narrative approach was used in this article.

Therapeutic Efficacy of in Hamsters with Cutaneous Leishmaniasis Caused by and .

Leishmaniasis may occur in three different clinical forms, namely, visceral, mucocutaneous and cutaneous, which are caused by different species of trypanosomatid protozoans of the genus . Pentavalent antimonials are the leading treatment for cutaneous leishmaniasis despite the hepatic, renal, and cardiac toxicity. In addition, the response of some species to pentavalent antimonials is increasingly poorer, and therefore new and more potent therapeutic alternatives are needed.

Clinical impact of del Nido cardioplegia in adult cardiac surgery: A prospective randomized trial.

Objective: The study objective was to assess the benefits of del Nido cardioplegia compared with cold blood cardioplegia solution in terms of myocardial protection during adult cardiac surgery.

Methods: A total of 474 adult patients undergoing coronary artery bypass grafting, heart valve surgery, thoracic aortic surgery, or combined procedures were randomized to the del Nido cardioplegia group (n = 234) or the cold blood cardioplegia solution group (n = 240) after provided informed consent. The primary end points assessed inotropic support requirements, severe cardiovascular events, and troponin trend within the first 48 hours of intensive care unit stay.

Quantification of molecular weight discrimination in reactions from ultrathin polymer films by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry.

In the present study, a reliable and robust method was developed to quantify the molecular weight discrimination that can occur in reactions indirect MALDI-TOF quantification of the molecular weights of grafted chains by comparing the characteristics of the polymeric material before the grafting reaction with those of the unreacted material recovered after grafting. Two polystyrene samples with different molecular weights and narrow molecular weight distributions were employed to prepare model blends that were grafted to silicon wafers and an analytical method was developed and validated to assess and quantify the modification of the molecular weight distribution that takes place during the process. Particular attention was paid to the standardization of the sample treatment and to find the best data collection and calibration methodologies in order to have statistically significant data even in the presence of a very scarce amount of the sample.

Aortic events in pregnant patients with Marfan syndrome. Lessons from a multicenter study.

Introduction And Objectives: Pregnancy in women with Marfan syndrome (MS) is associated with an increased risk of aortic events. The clinical evidence on pregnant patients with MS is limited and there is no specific consensus on their optimal management. We report our multicenter experience.

Integrated quantitative PIXE analysis and EDX spectroscopy using a laser-driven particle source.

Among the existing elemental characterization techniques, particle-induced x-ray emission (PIXE) and energy-dispersive x-ray (EDX) spectroscopy are two of the most widely used in different scientific and technological fields. Here, we present the first quantitative laser-driven PIXE and laser-driven EDX experimental investigation performed at the Centro de Láseres Pulsados in Salamanca. Thanks to their potential for compactness and portability, laser-driven particle sources are very appealing for materials science applications, especially for materials analysis techniques.

Nucleoplasmic signals promote directed transmembrane protein import simultaneously via multiple channels of nuclear pores.

Roughly 10% of eukaryotic transmembrane proteins are found on the nuclear membrane, yet how such proteins target and translocate to the nucleus remains in dispute. Most models propose transport through the nuclear pore complexes, but a central outstanding question is whether transit occurs through their central or peripheral channels. Using live-cell high-speed super-resolution single-molecule microscopy we could distinguish protein translocation through the central and peripheral channels, finding that most inner nuclear membrane proteins use only the peripheral channels, but some apparently extend intrinsically disordered domains containing nuclear localization signals into the central channel for directed nuclear transport.

Characterisation and Modelling of Ultrashort Laser-Driven Electromagnetic Pulses.

Recent advances on laser technology have enabled the generation of ultrashort (fs) high power (PW) laser systems. For such large scale laser facilities there is an imperative demand for high repetition rate operation in symbiosis with beamlines or end-stations. In such extreme conditions the generation of electromagnetic pulses (EMP) during high intense laser target interaction experiments can tip the scale for the good outcome of the campaign.

Aortic Complications in Marfan Syndrome: Should We Anticipate Preventive Aortic Root Surgery?

Background: The purpose of this study was to analyze the risk of aortic events (death, dissection, or aortic rupture) associated with Marfan syndrome and decide on the optimal timing for preventive surgery on the aortic root.

Methods: From January 2004 to June 2015, 397 patients from Marfan Units were studied by echocardiographic and computed tomography and magnetic resonance imaging of aorta and periodic annual monitoring. Mean follow-up was 5.

Thermal Hyperactivation and Stabilization of β-Galactosidase from through a Silica Sol-Gel Process Mediated by Chitosan-Metal Chelates.

The research of simple and fast enzyme immobilization methods, preserving the enzyme activity and improving the thermal stability, is in the spotlight. The objective of this work is to develop a β-galactosidase immobilization one-pot route, combining the silica sol-gel encapsulation (SSGE) process with a metal chelation strategy by using chitosan and Ca, Zn, or Cu cations. The results show that the presence of cations does not affect the encapsulation efficiency (81%) and has positive effects on the maximum catalytic potential, especially at 60 °C and in the presence of Ca ions (MPC = 2203).

Synthesis, leishmanicidal, trypanocidal and cytotoxic activity of quinoline-hydrazone hybrids.

Cutaneous leishmaniasis and Chagas disease are vector-borne parasitic disease causing serious risks to million people living in poverty-stricken areas. Both diseases are a major health problem in Latin America, and currently drugs for the effective treatment of these diseases have important concerns related with efficacy or toxicity than need to be addressed. We report herein the synthesis and biological activities (cytotoxicity, leishmanicidal and trypanocidal activities) of ten quinolone-hydrazone hybrids.

An efficient synthesis of new caffeine-based chalcones, pyrazolines and pyrazolo[3,4-b][1,4]diazepines as potential antimalarial, antitrypanosomal and antileishmanial agents.

A new series of chalcones 5a-f were synthesized from caffeine-based aldehyde 3 and substituted acetophenones 4a-f. Treatment of compounds 5a-f with hydrazine hydrate led to pyrazolines 6a-f, and their subsequent reaction with acetic anhydride or formic acid afforded the corresponding N-substituted pyrazolines 7a-f and 8a-f respectively. Additionally, the regioselective cyclocondensation reaction of chalcones 5a-f with 4,5-diaminopyrazole 9 afforded the diazepine derivatives 10a-f.

Outcomes in aortic and mitral valve replacement with intervalvular fibrous body reconstruction.

Background: Surgery for intervalvular fibrous body reconstruction in aortic and mitral valve replacement is a complex operation, although mandatory in some circumstances. The long-term result of this operation remains unknown. The objective of this study was to analyze the outcomes of this technique.

Colchicine mouth washings to improve oral mucositis in patients with hematological malignancies: a clinical trial.

Objective: Oral mucositis (OM) is a frequently encountered problem as a complication of cancer treatment. We investigated whether daily washings with colchicine solution improved mucositis in patients with hematological malignancies undergoing chemotherapy.

Methods: This study was a one-arm, nonrandomized clinical trial that used a historical control group.

Palliative endobronchial brachytherapy for non-small cell lung cancer.

Background: Non-small cell lung cancers (NSCLC) constitutes about 80% of all lung cancer cases. Although surgery is the only curative treatment of NSCLC, fewer than 20% of tumors can be radically resected. Radiotherapy is one of the main treatment modalities in lung cancer, contributing to both its cure and palliation.

[Correlation between myocardial perfusion and coronary angiography].

Determining the severity of coronary heart disease is of great importance to the cardiologist. There is a very good correlation between the severity of coronary heart disease and perfusion abnormalities to the myocardium as determined by radioisotope studies. We present our experience with forty (40) cases of ischemic heart disease diagnosed with sestamibi and its correlation with the obstruction of the coronary arteries by angiography.