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Environmental hypoxia exposure causes fertility problems in human and animals. Compelling evidence suggests that chronic hypoxia impairs spermatogenesis and reduces sperm motility. However, it is unclear whether paternal hypoxic exposure affects fertilization and early embryo development. In the present study, we exposed male mice to high altitude (3200 m above sea level) for 7 or 60 days to evaluate the effects of hypoxia on sperm quality, zygotic DNA methylation and blastocyst formation. Compared with age-matched controls, hypoxia-treated males exhibited reduced fertility after mating with normoxic females as a result of defects in sperm motility and function. Results of in vitro fertilization (IVF) experiments revealed that 60 days' exposure significantly reduced cleavage and blastocyst rates by 30% and 70%, respectively. Immunohistochemical staining of pronuclear formation indicated that the pronuclear formation process was disturbed and expression of imprinted genes was reduced in early embryos after paternal hypoxia. Overall, the findings of this study suggested that exposing male mice to hypoxia impaired sperm function and affected key events during early embryo development in mammals.Current generation electron monochromators employed as attachments to scanning transmission electron microscopes (STEM) offer the ability to obtain vibrational information from materials using electron energy-loss spectroscopy (EELS). We show here that in crystals, long- and short-wavelength phonon modes can be probed simultaneously with on-axis vibrational STEM EELS. The long-wavelength phonons are probed via dipole scattering, while the short-wavelength modes are probed via impact scattering of the incident electrons. The localized character of the short-wavelength modes is demonstrated by scanning the electron beam across the edge of a hexagonal boron nitride nanoparticle. It is found that employing convergence angles that encompass multiple Brillouin zone boundaries enhances the short-wavelength phonon contribution to the vibrational energy-loss spectrum much more than that achieved by employing collection angles that encompass multiple Brillouin zone boundaries. Probing short-wavelength phonons at high spatial resolution with on-axis vibrational STEM EELS will help develop a fundamental connection between vibrational excitations and bonding arrangements at atomic-scale heterogeneities in materials.
Dignity therapy (DT) is a brief, individualized intervention, which provides terminally ill patients with an opportunity to convey memories, essential disclosures, and prepare a final generativity document. DT addresses psychosocial and existential issues, enhancing a sense of meaning and purpose. Several studies have considered the legacy topics most frequently discussed by patients near the end of life. To date, no Portuguese study has done that analysis.
We conducted a qualitative analysis of 17 generativity documents derived from a randomized controlled trial (RCT). Inductive content analysis was used to identify emerging themes.
From the 39 RCT participants receiving DT, 17 gave consent for their generativity document to undergo qualitative analysis. Nine patients were female; mean age of 65 years, with a range from 46 to 79 years. Seven themes emerged "Significant people and things"; "Remarkable moments"; "Acknowledgments"; "Reflection on the course of life"; "Personal values"; "Messages left to others"; and "Requests and last wishes".
Generativity document analysis provides useful information for patients nearing death, including their remarkable life moments and memories, core values, concerns, and wishes for their loved ones. Being conscious of these dominant themes may allow health providers to support humanized and personalized care to vulnerable patients and their families, enhancing how professionals perceive and respond to personhood within the clinical setting.
Generativity document analysis provides useful information for patients nearing death, including their remarkable life moments and memories, core values, concerns, and wishes for their loved ones. Being conscious of these dominant themes may allow health providers to support humanized and personalized care to vulnerable patients and their families, enhancing how professionals perceive and respond to personhood within the clinical setting.
Prevalence of self-harm in the UK was reported as 6.4% in 2014. Despite sparse evidence for effectiveness, guidelines recommend harm minimisation; a strategy in which people who self-harm are supported to do so safely.
To determine the prevalence, sociodemographic and clinical characteristics of those who self-harm and practise harm minimisation within a London mental health trust.
We included electronic health records for patients treated by South London and Maudsley NHS Trust. Using an iterative search strategy, we identified patients who practise harm minimisation, then classified the approaches using a content analysis. We compared the sociodemographic characteristics with that of a control group of patients who self-harm and do not use harm minimisation.
In total 22 736 patients reported self-harm, of these 693 (3%) had records reporting the use of harm-minimisation techniques. We coded the approaches into categories (a) 'substitution' (>50% of those using harm minimisation), such as using rubbility and effectiveness of harm-minimisation techniques and update national clinical guidelines.
This study aimed to determine whether unrestricted weight-bearing as tolerated (WBAT) following lateral locking plate (LLP) fixation of periprosthetic distal femoral fractures (PDFFs) is associated with increased failure and reoperation, compared with restricted weight-bearing (RWB).
In a retrospective cohort study of consecutive patients with unilateral PDFFs undergoing LLP fixation, patients prescribed WBAT were compared with those prescribed 6weeks of RWB. click here The primary outcome measure was reoperation. Kaplan-Meier and Cox multivariable analyses were performed.
There were 43 patients (mean age 80.9 ± 11.7 years, body mass index 26.8 ± 5.7 kg/m
and 86.0% female) 28 WBAT and 15 RWB. There were more interprosthetic fractures in the RWB group (p = 0.040). Mean follow-up was 3.8years (range 1.0-10.4). Eight patients (18.6%) underwent reoperation. Kaplan-Meier analysis demonstrated no difference in 2-year survival between WBAT (80.6%, 95% CI 65.3-95.9) and RWB (83.3%, 95% CI 62.1-100.0; p = 0.54). Cox analysis showed increased reoperation risk with medial comminution (hazard ratio 10.
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