Substance Use Experiences Among Bisexual, Pansexual, and Queer (Bi+) Male Youth: A Qualitative Study of Motivations, Consequences, and Decision Making.

Sexual minority youth are at increased risk of substance use compared to their heterosexual peers, and bisexual youth appear to be at greatest risk. However, little is known about their motivations for and against using substances, how they make decisions, and what consequences they experience. We used qualitative data from a study of 54 cisgender and transgender male youth (ages 14-17 years) who reported attractions to more than one gender or regardless of gender (i.

A mixed methods study of sexuality education experiences and preferences among bisexual, pansexual, and queer (bi+) male youth.

Introduction: Bisexual male youth are more likely to engage in certain behaviors that contribute to HIV/STI transmission (e.g., substance use) than are heterosexual and gay male youth.

CommunityRx: Optimizing a Community Resource Referral Intervention for Minority Dementia Caregivers.

Community resource referral systems have been implemented into care settings that serve persons with dementia but with little input from caregivers. Focus groups were conducted with African American, Hispanic, and Asian caregivers to describe their preferences for community resource referral information. Caregivers discussed the significance of a community resource list for dementia caregiving and self-care and articulated strategies for effective information delivery during a medical visit.

Blood-brain barrier opening with focused ultrasound in Parkinson's disease dementia.

MR-guided focused ultrasound (MRgFUS), in combination with intravenous microbubble administration, has been applied for focal temporary BBB opening in patients with neurodegenerative disorders and brain tumors. MRgFUS could become a therapeutic tool for drug delivery of putative neurorestorative therapies. Treatment for Parkinson's disease with dementia (PDD) is an important unmet need.

Laparoscopic Partial Splenectomy Assisted by Fluorescence in a 13-Year-Old Girl.

Partial splenectomy allows preserving immune function in benign splenic lesions such as epidermoid cysts. Determining the plane of resection and perfusion of the spleen remnant can be difficult, especially in centrally located lesions. We present a 13-year-old girl with a symptomatic splenic cyst of 6 cm in diameter located next to the splenic hilum.

First Experience with Fluorescence in Pediatric Laparoscopy.

 The use of intraoperative fluorescence images with indocyanine green (ICG) has recently been described as an aid in decision-making during surgical procedures in adults. We present our first experiences with different laparoscopic procedures performed in children using ICG fluorescence images.  We have used ICG fluorescence imaging technique in varicocele ligation, two nephrectomies, cholecystectomy, and one case of aortocoronary fistula closure.

Insights into the Mechanism of Paraoxonase-1: Comparing the Reactivity of the Six-Bladed β-Propeller Hydrolases.

The mammalian protein paraoxonase-1 (PON1) has been explored as a promising bioscavenger treatment for organophosphorus (OP) agent poisoning, but it is not active enough to protect against many agents. Engineering is limited because PON1's catalytic mechanism is poorly understood; moreover, its native activity and substrate are unknown. PON1 is a calcium-bound six-bladed β-propeller hydrolase that shares high structural homology, a conserved metal-coordinating active site, and substrate specificity overlap with other members of a superfamily that includes squid diisopropylfluorophosphatase, bacterial drug responsive protein 35, and mammalian senescence marker protein 30.

Assessing the stoichiometric efficacy of mammalian expressed paraoxonase-1 variant I-F11 to afford protection against G-type nerve agents.

We evaluated the ability of evolved paraoxonase-1 (PON1) to afford broad spectrum protection against G-type nerve agents when produced in mammalian cells via an adenovirus expression system. The PON1 variants G3C9, VII-D11, I-F11, VII-D2 and II-G1 were screened in vitro for their ability to hydrolyze G-agents, as well as for their preference towards hydrolysis of the more toxic P(-) isomer. I-F11, with catalytic efficiencies of (1.

Retinal ganglion cell neuroprotection induced by activation of alpha7 nicotinic acetylcholine receptors.

The α7nAChR agonist, PNU-282987, has previously been shown to have a neuroprotective effect against loss of retinal ganglion cells (RGCs) in an in vivo glaucoma model when the agent was injected into the vitreous chamber of adult Long Evans rat eyes. Here, we characterized the neuroprotective effect of PNU-282987 at the nerve fiber and retinal ganglion cell layer, determined that neuroprotection occurred when the agonist was applied as eye drops and verified detection of the agonist in the retina, using LC/MS/MS. To induce glaucoma-like conditions in adult Long Evans rats, hypertonic saline was injected into the episcleral veins to induce scar tissue and increase intraocular pressure.

Investigation of evolved paraoxonase-1 variants for prevention of organophosphorous pesticide compound intoxication.

We investigated the ability of the engineered paraoxonase-1 variants G3C9, VII-D11, I-F11, and VII-D2 to afford protection against paraoxon intoxication. Paraoxon is the toxic metabolite of parathion, a common pesticide still in use in many developing countries. An in vitro investigation showed that VII-D11 is the most efficient variant at hydrolyzing paraoxon with a kcat/Km of 2.

An in vitro and in vivo evaluation of the efficacy of recombinant human liver prolidase as a catalytic bioscavenger of chemical warfare nerve agents.

In this study, we determined the ability of recombinant human liver prolidase to hydrolyze nerve agents in vitro and its ability to afford protection in vivo in mice. Using adenovirus containing the human liver prolidase gene, the enzyme was over expressed by 200- to 300-fold in mouse liver and purified to homogeneity by affinity and gel filtration chromatography. The purified enzyme hydrolyzed sarin, cyclosarin and soman with varying rates of hydrolysis.

A nicotinic acetylcholine receptor agonist prevents loss of retinal ganglion cells in a glaucoma model.

Purpose: The purpose of this study was to analyze the neuroprotective effect of an α7 nAChR agonist, PNU-282987, using an in vivo model of glaucoma in Long Evans rats.

Methods: One eye in each animal was surgically manipulated to induce glaucoma in control untreated animals and in animals that were treated with intravitreal injections of PNU-282987. To induce glaucoma-like conditions, 0.