Commuting and Acceptance of Worksite Physical Activity Opportunities: Insights From a French University Hospital.

BACKGROUND: Recent research suggests a need for worksite programs that promote structured physical activity (PA) among hospital staff. The objectives of this study were to assess the hospital employees' acceptance of PA opportunities that could be implemented at the worksite, and the association between worksite PA and commuting and other sociocognitive factors. METHOD: Acceptance of seven PA opportunities from the WHO guidelines was correlated with commuting and socio-cognitive factors through an online survey conducted among the workforce of the University Hospital of Angers, France (N = 6874) between April 25 and May 22, 2022. RESULTS: Only three PA opportunities in the seven proposed reached high approval rates among at least 50% of the 1,427 participants, namely, provide cycle facilities onsite, create a fitness room onsite, and establish partnerships with private associations or sports clubs, albeit rates decreased significantly with commuting distance for the first and the last proposals. The number of approved PA opportunities was positively related to the perceived negative influence of commuting on well-being and self-rated concerns with current PA level. It was negatively related to older age, long commuting, and flexible rest days. CONCLUSION: Based on these results, we recommend raising PA awareness and self-efficacy before implementing an easily accessible fitness center for employees. Providing cycle facilities and a more walkable environment in the hospital setting while encouraging active traveling between home and work for short commuters could additionally increase the level of physical activity on an equitable and sustainable basis.

DNA from extinct giant lemurs links archaeolemurids to extant indriids.

BACKGROUND: Although today 15% of living primates are endemic to Madagascar, their diversity was even greater in the recent past since dozens of extinct species have been recovered from Holocene excavation sites. Among them were the so-called "giant lemurs" some of which weighed up to 160 kg. Although extensively studied, the phylogenetic relationships between extinct and extant lemurs are still difficult to decipher, mainly due to morphological specializations that reflect ecology more than phylogeny, resulting in rampant homoplasy. RESULTS: Ancient DNA recovered from subfossils recently supported a sister relationship between giant "sloth" lemurs and extant indriids and helped to revise the phylogenetic position of Megaladapis edwardsi among lemuriformes, but several taxa - such as the Archaeolemuridae - still await analysis. We therefore used ancient DNA technology to address the phylogenetic status of the two archaeolemurid genera (Archaeolemur and Hadropithecus). Despite poor DNA preservation conditions in subtropical environments, we managed to recover 94- to 539-bp sequences for two mitochondrial genes among 5 subfossil samples. CONCLUSION: This new sequence information provides evidence for the proximity of Archaeolemur and Hadropithecus to extant indriids, in agreement with earlier assessments of their taxonomic status (Primates, Indrioidea) and in contrast to recent suggestions of a closer relationship to the Lemuridae made on the basis of analyses of dental developmental and postcranial characters. These data provide new insights into the evolution of the locomotor apparatus among lemurids and indriids.

An anti-apoptotic viral protein that recruits Bax to mitochondria.

The viral mitochondria-localized inhibitor of apoptosis (vMIA), encoded by the UL37 gene of human cytomegalovirus, inhibits apoptosis-associated mitochondrial membrane permeabilization by a mechanism different from that of Bcl-2. Here we show that vMIA induces several changes in Bax that resemble those found in apoptotic cells yet take place in unstimulated, non-apoptotic vMIA-expressing cells. These changes include the constitutive localization of Bax at mitochondria, where it associates tightly with the mitochondrial membrane, forming high molecular weight aggregates that contain vMIA. vMIA recruits Bax to mitochondria but delays relocation of caspase-8-activated truncated Bid-green fluorescent protein (GFP) (t-Bid-GFP) to mitochondria. The ability of vMIA and its deletion mutants to associate with Bax and to induce relocation of Bax to mitochondria correlates with their anti-apoptotic activity and with their ability to suppress mitochondrial membrane permeabilization. Taken together, our data indicate that vMIA blocks apoptosis via its interaction with Bax. vMIA neutralizes Bax by recruiting it to mitochondria and "freezing" its pro-apoptotic activity. These data unravel a novel strategy of subverting an intrinsic pathway of apoptotic signaling.