Medicine and Health Sciences Commons^™

Humanin Prevents Age-Related Cognitive Decline In Mice And Is Associated With Improved Cognitive Age In Humans., Kelvin Yen, Junxiang Wan, Hemal H Mehta, Brendan Miller, Amy Christensen, Morgan E Levine, Matthew P Salomon, Sebastian Brandhorst, Jialin Xiao, Su-Jeong Kim, Gerardo Navarrete, Daniel Campo, G Jean Harry, Valter Longo, Christian J Pike, Wendy J Mack, Howard N Hodis, Eileen M Crimmins, Pinchas Cohen

Articles, Abstracts, and Reports

Advanced age is associated with a decline in cognitive function, likely caused by a combination of modifiable and non-modifiable factors such as genetics and lifestyle choices. Mounting evidence suggests that humanin and other mitochondrial derived peptides play a role in several age-related conditions including neurodegenerative disease. Here we demonstrate that humanin administration has neuroprotective effects in vitro in human cell culture models and is sufficient to improve cognition in vivo in aged mice. Furthermore, in a human cohort, using mitochondrial GWAS, we identified a specific SNP (rs2854128) in the humanin-coding region of the mitochondrial genome that is associated with a …

Hospital-Based Physicians' Intubation Decisions And Associated Mental Models When Managing A Critically And Terminally Ill Older Patient., Shannon Haliko, Julie Downs, Deepika Mohan, Robert Arnold, Amber E Barnato

Articles, Abstracts, and Reports

BACKGROUND: Variation in the intensity of acute care treatment at the end of life is influenced more strongly by hospital and provider characteristics than patient preferences.

OBJECTIVE: We sought to describe physicians' mental models (i.e., thought processes) when encountering a simulated critically and terminally ill older patient, and to compare those models based on whether their treatment plan was patient preference-concordant or preference-discordant.

METHODS: Seventy-three hospital-based physicians from 3 academic medical centers engaged in a simulated patient encounter and completed a mental model interview while watching the video recording of their encounter. We used an "expert" model to code the …

Conserved Brain Myelination Networks Are Altered In Alzheimer's And Other Neurodegenerative Diseases., Mariet Allen, Xue Wang, Jeremy D Burgess, Jens Watzlawik, Daniel J Serie, Curtis S Younkin, Thuy Nguyen, Kimberly G Malphrus, Sarah Lincoln, Minerva M Carrasquillo, Charlotte Ho, Paramita Chakrabarty, Samantha Strickland, Melissa E Murray, Vivek Swarup, Daniel H Geschwind, Nicholas T Seyfried, Eric B Dammer, James J Lah, Allan I Levey, Todd E Golde, Cory Funk, Hongdong Li, Nathan D Price, Ronald C Petersen, Neill R Graff-Radford, Steven G Younkin, Dennis W Dickson, Julia R Crook, Yan W Asmann, Nilüfer Ertekin-Taner

Articles, Abstracts, and Reports

INTRODUCTION: Comparative transcriptome analyses in Alzheimer's disease (AD) and other neurodegenerative proteinopathies can uncover both shared and distinct disease pathways.

METHODS: We analyzed 940 brain transcriptomes including patients with AD, progressive supranuclear palsy (PSP; a primary tauopathy), and control subjects.

RESULTS: We identified transcriptional coexpression networks implicated in myelination, which were lower in PSP temporal cortex (TCX) compared with AD. Some of these associations were retained even after adjustments for brain cell population changes. These TCX myelination network structures were preserved in cerebellum but they were not differentially expressed in cerebellum between AD and PSP. Myelination networks were downregulated in …

Novel Extra-Thoracic Vats Minimally Invasive Technique For Management Of Multiple Rib Fractures., Natalie N Merchant, Osita Onugha

Articles, Abstracts, and Reports

We report an elderly patient with chronic obstructive pulmonary disease (COPD), Alzheimer's disease and early dementia who presented with multiple displaced rib fractures of left ribs 4 through 9 with flail segments of ribs 4 through 8 and an associated traumatic pneumatocele from rib puncture of the left upper lobe. The decision to treat this patient operatively was based on the presence of flail chest, the patient's age, baseline co-morbidities and limited physiological reserve. Surgical rib fixation is traditionally performed with a thoracotomy incision and open exposure for extra-thoracic rib fixation, however, this patient underwent chest wall stabilization using an …