\u3cem\u3eAnolis\u3c/em\u3e Sex Chromosomes Are Derived from A Single Ancestral Pair

To explain the frequency and distribution of heteromorphic sex chromosomes in the lizard genus Anolis, we compared the relative roles of sex chromosome conservation versus turnover of sex‐determining mechanisms. We used model‐based comparative methods to reconstruct karyotype evolution and the presence of heteromorphic sex chromosomes onto a newly generated Anolis phylogeny. We found that heteromorphic sex chromosomes evolved multiple times in the genus. Fluorescent in situ hybridization (FISH) of repetitive DNA showed variable rates of Y chromosome degeneration among Anolis species and identified previously undetected, homomorphic sex chromosomes in two species. We confirmed homology of sex chromosomes in the genus by performing FISH of an X‐linked bacterial artificial chromosome (BAC) and quantitative PCR of X‐linked genes in multiple Anolis species sampled across the phylogeny. Taken together, these results are consistent with long‐term conservation of sex chromosomes in the group. Our results pave the way to address additional questions related to Anolis sex chromosome evolution and describe a conceptual framework that can be used to evaluate the origins and evolution of heteromorphic sex chromosomes in other clades

Spermiogenesis of \u3ci\u3eHeliothis virescens\u3c/i\u3e (Lepidoptera: Noctuidae): An Ultrastructure Study of Eupyrene Sperm in Sterile Backcross Males

Sterile backcross (Be) males originate from the hybridization of Heliothis subflexa (Guennee) females to H. virescens (F.) males followed by recurrent backcrossing of the fertile female progeny to H. virescens males. Ultrastructural transmission electron microscope (TEM) studies of the postmeiotic maturation of eupyrene sperm cells in Be males, and comparisons with the cells in normal H. virescens males, show that the early stages in cell differentiation and maturation are similar in Be and normal H. virescens males. In 3- or 5-d-old pupae, some of the Be spermatids contain large vacuoles in the cytoplasm or in the mitochondrial derivatives (MDs). Also, the MDs are greatly enlarged at certain levels in the sperm tail and appear normal in other sections. Other structures in the maturing sperm cell, such as the axial filament, cell membranes, manchette system, satellite bodies, and cristae, maintain normal morphology. In more mature eupyrene sperm bundles, it appears that cell membranes often rupture and some of the cells fuse to form abnormal structures with multiple axial filaments and malformed MDs. In any given section we commonly observe some cells with gross abnormalities of the MDs and neighboring cells in the section that are normal. As maturation of the eupyrene sperm bundle continues, the abnormalities become much more severe. In adult Be males, some cells appear normal in some sections. However, in other sections it is difficult to recognize any normal eupyrene sperm cells, and there is generalized breakdown of many cells in the sperm bundle

ELEVATED ARTERIAL BLOOD PRESSURE AND PHYSICAL ACTIVITY IN ADOLESCENCE

Physical activity (PhA) in adolescence and its influence on the arterial blood pressure (ABP) is investigated in 964 adolescents, aged 15 to 17 years. Screening of ABP is carried out and interview with the students for determining the PhA in their free time, the frequency of the physical activities and the time for active physical exercises. The results show that every second girl and third boy is not going for sport in its free time and the level of PhA in adolescents with elevated ABP is significantly lower. It is found that the level of PhA in girls with normal or elevated ABP is 2 times lower compared to that of boys. Models of PhA with high cardioprotective effect are created for the adolescent age

Come Back To Me Sweet Dream

https://digitalcommons.library.umaine.edu/mmb-vp/5260/thumbnail.jp

Facilitating respite, communication, and care for children with intellectual and developmental disabilities: Preliminary evaluation of the Caregiver Pain Information Guide.

Background: Pain is common in children with intellectual and developmental disabilities (I/DD) and yet is an understudied issue. Respite workers commonly care for children with I/DD but are lacking in resources to assist in pain assessment and management for this population. Without adequate knowledge in this domain, children with I/DD are at risk of their pain being underrecognized and undermanaged. A resource for caregivers was developed to address this issue, facilitating communication between parents and respite workers and better addressing the complex pain-related needs of children with I/DD. The objective of this study was to solicit initial feedback on the content, feasibility, and usability of the resource. Method/Procedure: Semistructured individual interviews and questionnaires were completed with 7 parents of children with I/DD and 6 respite workers. Results: All participants viewed the resource as important and potentially useful. Content analyses indicated that participants appreciated the comprehensiveness and format of the resource, whereas the modifiability was identified as an area for improvement. Participants believed that the resource would be useful across settings with a variety of caregivers. Three categories of considerations were identified as potential facilitators and barriers for implementation: consideration of how the resource is being completed, who is completing it, and organization-based procedures. Discussion/Conclusions: Results from this study suggest that the Caregiver Pain Information Guide is a promising resource for helping respite workers better understand pain in children with I/DD. Future work is needed on implementation and impact of this resource in community settings. (PsycInfo Database Record (c) 2020 APA, all rights reserved)Implications for Impact Statement—Children with intellectual and developmental disabilities experience pain frequently and are at risk of having their pain missed by caregivers. Parents would like to share pain-related knowledge and skills specific to their children with intellectual and developmental disabilities with those who support their child in other settings. The Caregiver Pain Information Guide was created to facilitate communication between parents and caregivers of these children. The current article discusses initial feedback from parents and respite workers regarding this new tool. (PsycInfo Database Record (c) 2020 APA, all rights reserved

Anolis sex chromosomes are derived from a single ancestral pair

This is the peer reviewed version of the following article: Gamble, T., Geneva, A. J., Glor, R. E., & Zarkower, D. (2014). Anolis sex chromosomes are derived from a single ancestral pair. Evolution; International Journal of Organic Evolution, 68(4), 1027–1041. http://doi.org/10.1111/evo.12328, which has been published in final form at http://doi.org/10.1111/evo.12328. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.To explain the frequency and distribution of heteromorphic sex chromosomes in the lizard genus Anolis we compared the relative roles of sex chromosome conservation vs. turnover of sex determining mechanisms. We used model based comparative methods to reconstruct karyotype evolution and the presence of heteromorphic sex chromosomes onto a newly generated Anolis phylogeny. We found that heteromorphic sex chromosomes evolved multiple times in the genus. Fluorescent in situ hybridization (FISH) of repetitive DNA showed variable rates of Y chromosome degeneration among Anolis species and identified previously undetected, homomorphic sex chromosomes in two species. We confirmed homology of sex chromosomes in the genus by performing FISH of an X-linked BAC and qPCR of X-linked genes in multiple Anolis species sampled across the phylogeny. Taken together, these results are consistent with long-term conservation of sex chromosomes in the group. Our results pave the way to address additional questions related to Anolis sex chromosome evolution and describe a conceptual framework that can be used to evaluate the origins and evolution of heteromorphic sex chromosomes in other clades

Implementation research for the prevention of antimicrobial resistance and healthcare-associated infections; 2017 Geneva infection prevention and control (IPC)-think tank (part 1)

Background Around 5–15% of all hospital patients worldwide suffer from healthcare-associated infections (HAIs), and years of excessive antimicrobial use in human and animal medicine have created emerging antimicrobial resistance (AMR). A considerable amount of evidence-based measures have been published to address these challenges, but the largest challenge seems to be their implementation. Methods In June 2017, a total of 42 experts convened at the Geneva IPC-Think Tank to discuss four domains in implementation science: 1) teaching implementation skills; 2) fostering implementation of IPC and antimicrobial stewardship (AMS) by policy making; 3) national/international actions to foster implementation skills; and 4) translational research bridging social sciences and clinical research in infection prevention and control (IPC) and AMR. Results Although neglected in the past, implementation skills have become a priority in IPC and AMS. They should now be part of any curriculum in health care, and IPC career paths should be created. Guidelines and policies should be aligned with each other and evidence-based, each document providing a section on implementing elements of IPC and AMS in patient care. International organisations should be advocates for IPC and AMS, framing them as patient safety issues and emphasizing the importance of implementation skills. Healthcare authorities at the national level should adopt a similar approach and provide legal frameworks, guidelines, and resources to allow better implementation of patient safety measures in IPC and AMS. Rather than repeating effectiveness studies in every setting, we should invest in methods to improve the implementation of evidence-based measures in different healthcare contexts. For this, we need to encourage and financially support collaborations between social sciences and clinical IPC research. Conclusions Experts of the 2017 Geneva Think Tank on IPC and AMS, CDC, and WHO agreed that sustained efforts on implementation of IPC and AMS strategies are required at international, country, and hospital management levels, to provide an adequate multimodal framework that addresses (not exclusively) leadership, resources, education and training for implementing IPC and AMS. Future strategies can build on this agreement to make strategies on IPC and AMS more effective