Searching for Preclinical Models of Acute Decompensated Heart Failure: a Concise Narrative Overview and a Novel Swine Model

Cardiovascular Drugs and Therapy - Available animal models of acute heart failure (AHF) and their limitations are discussed herein. A novel and preclinically relevant porcine model of decompensated...     

Circumstances of substance use by street youth in Egypt support the case for intervening to prevent adverse childhood experiences

Background: Egyptian street youth use substances including tobacco, illicit drugs, and pharmaceutical drugs. To understand the circumstances, including adverse childhood experiences, that place adolescents at risk for engaging in substance use, we conducted in-depth interviews among a sample of Egyptian street children. Methods: From youth residing at or attending Caritas, a non-profit organization, which provides shelter and education to street youth, seven girls and twelve boys, aged 12–18 years, participated in open-ended, in-depth interviews. Results: Eight out of the 19 participants reported family history (early exposure) to substance use; and seven of them were initiated by either a family member (sibling), friend or coworker. Most of the participants reported a history of conflict with or abuse (verbal or physical) by their parents or siblings, or stressful situations at home; they used substance(s) to alleviate their stress. Few attended school, and some were forced to work and help their family. Conclusions: Among Egyptian youth, adverse childhood experiences, such as poverty, child abuse, and family substance use, challenge somewhat susceptible youths and lead them to the path of substance use and addiction. Prevention intervention should be multifaceted, culturally adaptable, and primarily targeting the social environment during childhood.     

Ocular Involvement in Patients with Fungemia in an Urban Tertiary Care Center

Purpose: To illustrate the rate of endogenous endophthalmitis associated with fungemia and evaluate the importance of screening in a public city hospital.

Methods: A retrospective review was performed on all inpatient ophthalmology consults for fungemia from 2010 to 2015. Clinical histories, ocular examinations, and microbial cultures were reviewed.

Results: Of 95 patients (mean age 51.6 years, 75% male) with fungemia, 9/95 (9.5%) demonstrated intraocular involvement. Of these nine patients, two were unable to participate in the ophthalmic exam due to intubation, while the remaining seven reported no changes in their vision. Two patients had their antifungal medications adjusted to optimize intraocular penetration and one patient progressed to develop vitreous involvement but died before further escalation of care occurred.

Conclusion: All involved individuals in this study were either non-communicative or without visual complaints. This suggests that routine screening should still be recommended, especially in a public hospital setting.     

Lung ultrasound for pneumothorax in children: relevant limits

Pediatric Radiology -     

Early production of IL-17A by γδ T cells in the trachea promotes viral clearance during influenza infection in mice

The innate immune response generated against influenza infection is critical for the inhibition of viral dissemination. The trachea contains different types of innate immune cells that protect the respiratory tract from pathogen invasion. Among them, γδ T cells have the ability to rapidly generate large amounts of pro-inflammatory cytokines to preserve mucosal barrier homeostasis during infection. However, little is known about their role during the early phase of influenza infection in the airways. In this study, we found that, early after infection, γδ T cells are recruited and activated in the trachea and outnumber αβ T cells during the course of the influenza infection that follows. We also showed that the majority of the recruited γδ T cells express the Vγ4 TCR chain and infiltrate in a process that involves the chemokine receptor CXCR3. In addition, we demonstrated that γδ T cells promote the recruitment of protective neutrophils and NK cells to the tracheal mucosa. Altogether, our results highlight the importance of the immune responses mediated by γδ T cells.