Lipid Nanoparticles for Nucleic Acid Delivery Beyond the Liver.

Lipid nanoparticles (LNPs) are the most clinically advanced drug delivery system for nucleic acid therapeutics, exemplified by the success of the COVID-19 mRNA vaccines. However, their clinical use is currently limited to hepatic diseases and vaccines due to their tendency to accumulate in the liver upon intravenous administration. To fully leverage their potential, it is essential to understand and address their liver tropism, while also developing strategies to enhance delivery to tissues beyond the liver.

Unusual Presentation of a Gastrointestinal Stromal Tumor in a Small Intestine Diverticulum.

A 50-year-old female with no significant medical history initially presented to an urgent care center with symptoms of acute onset abdominal pain, nausea, and emesis. Chest and abdominal X-ray revealed free air under the diaphragm, prompting immediate transfer to the emergency department. Continued abdominal tenderness and pain were concerning for perforated viscus.

TV medical dramas: health sciences students' viewing habits and potential for teaching issues related to bioethics and professionalism.

Background: Medical dramas have been popular since their inception, especially among medical students. We hypothesized that the recent increase in the availability of TV medical series through online streaming platforms has probably changed health science students' viewing habits as well as the representation of bioethical conflicts and health professionals.

Methods: We invited undergraduate students of medicine, nursing, and human biology to complete a self-administered questionnaire about their viewing habits and perceptions of the depictions of bioethical issues and professionalism in TV medical series.

DNA methylation biomarkers of myocardial infarction and cardiovascular disease.

Background: The epigenetic landscape underlying cardiovascular disease (CVD) is not completely understood and the clinical value of the identified biomarkers is still limited. We aimed to identify differentially methylated loci associated with acute myocardial infarction (AMI) and assess their validity as predictive and causal biomarkers.

Results: We designed a case-control, two-stage, epigenome-wide association study on AMI (n = 391, n = 204).

Phosphorylation of mitochondrial transcription factor B2 controls mitochondrial DNA binding and transcription.

Mammalian cells contain genetic information in two compartments, the nucleus and the mitochondria. Mitochondrial gene expression must be coordinated with nuclear gene expression to respond to cellular energetic needs. To gain insight into the coordination between the nucleus and mitochondria, there is a need to understand the regulation of transcription of mitochondrial DNA (mtDNA).