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Sterile barrier

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https://www.readbyqxmd.com/read/28098850/a-rare-exception-to-haldane-s-rule-are-x-chromosomes-key-to-hybrid-incompatibilities
#1
P A Moran, M G Ritchie, N W Bailey
The prevalence of Haldane's rule suggests that sex chromosomes commonly have a key role in reproductive barriers and speciation. However, the majority of research on Haldane's rule has been conducted in species with conventional sex determination systems (XY and ZW) and exceptions to the rule have been understudied. Here we test the role of X-linked incompatibilities in a rare exception to Haldane's rule for female sterility in field cricket sister species (Teleogryllus oceanicus and T. commodus). Both have an XO sex determination system...
January 18, 2017: Heredity
https://www.readbyqxmd.com/read/28092310/new-insights-into-the-gut-as-the-driver-of-critical-illness-and-organ-failure
#2
Mei Meng, Nathan J Klingensmith, Craig M Coopersmith
PURPOSE OF REVIEW: The gut has long been hypothesized to be the 'motor' of multiple organ dysfunction syndrome. This review serves as an update on new data elucidating the role of the gut as the propagator of organ failure in critical illness. RECENT FINDINGS: Under basal conditions, the gut absorbs nutrients and serves as a barrier that prevents approximately 40 trillion intraluminal microbes and their products from causing host injury. However, in critical illness, gut integrity is disrupted with hyperpermeability and increased epithelial apoptosis, allowing contamination of extraluminal sites that are ordinarily sterile...
January 13, 2017: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/28088497/offering-the-full-range-of-contraceptive-options-a-survey-of-interest-in-vasectomy-training-in-the-us-family-planning-community
#3
Brian T Nguyen, Andrea L Jochim, Grace H Shih
OBJECTIVE: To assess current practices regarding female and male sterilization counseling and provision, as well as determine interest in providing vasectomy among family planning specialists. METHODS: Members of the US-based network of family planning fellowship physicians (current fellows, graduates and faculty) received a Web-based survey from November 2015 through January 2016 regarding current sterilization preferences and practices, as well as interest in obtaining training in vasectomy counseling and procedure...
January 11, 2017: Contraception
https://www.readbyqxmd.com/read/28087052/contraceptive-practices-of-women-with-complex-congenital-heart-disease
#4
Pamela D Miner, Mary M Canobbio, Dorothy D Pearson, Mary Schlater, Yvonne Balon, Kathryn J Junge, Ami Bhatt, Deena Barber, Michelle J Nickolaus, Adrienne H Kovacs, Philip Moons, Kate Shaw, Susan M Fernandes
Understanding the contraceptive practices of women with complex congenital heart disease (CHD) and providing them individualized contraception counseling may prevent adverse events and unplanned high-risk pregnancies. Given this, we sought to examine the contraceptive practices in women with CHD, describe adverse events associated with contraceptive use, and describe the provision of contraception counseling. Women >18 years were recruited from 2011 to 2014 from 9 adult CHD (ACHD) centers throughout North America...
December 18, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/28078801/abnormal-pollen-vacuolation1-apv1-is-required-for-male-fertility-by-contributing-to-anther-cuticle-and-pollen-exine-formation-in-maize
#5
Yamuna Somaratne, Youhui Tian, Hua Zhang, Mingming Wang, Yanqing Huo, Fengge Cao, Li Zhao, Huabang Chen
Anther cuticle and pollen exine are the major protective barriers against various stresses. The proper functioning of genes expressed in the tapetum is vital for the development of pollen exine and anther cuticle. In this study, we report a tapetum-specific gene, Abnormal Pollen Vacuolation1 (APV1), in maize that affects anther cuticle and pollen exine formation. The apv1 mutant was completely male sterile. Its microspores were swollen, less vacuolated, with a flat and empty anther locule. In the mutant, the anther epidermal surface was smooth, shiny, and plate-shaped compared with the three-dimensional crowded ridges and randomly formed wax crystals on the epidermal surface of the wild type...
January 12, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28064190/cytoplasmic-nuclear-incompatibility-between-wild-isolates-of-caenorhabditis-nouraguensis
#6
Piero Lamelza, Michael Ailion
How species arise is a fundamental question in biology. Species can be defined as populations of interbreeding individuals that are reproductively isolated from other such populations. Therefore, understanding how reproductive barriers evolve between populations is essential for understanding the process of speciation. Hybrid incompatibility (for example, hybrid sterility or lethality) is a common and strong reproductive barrier in nature. Here we report a lethal incompatibility between two wild isolates of the nematode Caenorhabditis nouraguensis Hybrid inviability results from the incompatibility between a maternally inherited cytoplasmic factor from each strain and a recessive nuclear locus from the other...
January 6, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/28049856/irregular-pollen-exine1-is-a-novel-factor-in-anther-cuticle-and-pollen-exine-formation
#7
Xiaoyang Chen, Hua Zhang, Huayue Sun, Hongbing Luo, Li Zhao, Zhaobin Dong, Shuangshuang Yan, Cheng Zhao, Renyi Liu, Chunyan Xu, Song Li, Huabang Chen, Weiwei Jin
Anther cuticle and pollen exine are protective barriers for pollen development and fertilization. Despite that several regulators have been identified for anther cuticle and pollen exine development in rice (Oryza sativa) and Arabidopsis (Arabidopsis thaliana), few genes have been characterized in maize (Zea mays) and the underlying regulatory mechanism remains elusive. Here, we report a novel male-sterile mutant in maize, irregular pollen exine1 (ipe1), which exhibited a glossy outer anther surface, abnormal Ubisch bodies, and defective pollen exine...
January 2017: Plant Physiology
https://www.readbyqxmd.com/read/28045704/neonatal-peripherally-inserted-central-catheter-practices-and-providers-results-from-the-neonatal-picc1-survey
#8
Elizabeth Sharpe, Latoya Kuhn, David Ratz, Sarah L Krein, Vineet Chopra
BACKGROUND: Neonatal intensive care units (NICUs) commonly utilize peripherally inserted central catheters (PICCs) to provide nutrition and long-term medications to premature and full-term infants. However, little is known about PICC practices in these settings. PURPOSE: To assess PICC practices, policies, and providers in NICUs. METHODS: The Neonatal PICC1 Survey was conducted through the use of the electronic mailing list of a national neonatal professional organization's electronic membership community...
December 29, 2016: Advances in Neonatal Care: Official Journal of the National Association of Neonatal Nurses
https://www.readbyqxmd.com/read/28035110/bioassay-evaluation-of-residual-activity-of-attractive-toxic-sugar-treated-barrier-fence-in-the-control-of-phlebotomus-papatasi-diptera-psychodidae
#9
Abedin Saghafipour, Hassan Vatandoost, Ali Reza Zahraei-Ramazani, Mohammad Reza Yaghoobi-Ershadi, Yavar Rassi, Mohammad Reza Shirzadi, Amir Ahmad Akhavan
BACKGROUND & OBJECTIVES: Phlebotomus papatasi is the main vector of the zoonotic cutaneous leishmaniasis (ZCL) in Qom Province and many other provinces of Iran. Attractive toxic sugar baits (ATSB) treated barrier fence is one of the new methods for controlling the vectors such as sandflies. The present study was designed to evaluate the residual activity of ATSB-treated barrier fence that was used in control of P. papatasi. METHODS: Following the selection of villages in Markazi district of Qom Province, central Iran during 2015 for ATSB and ASB (bait containing no active ingredient) methods; barrier fences on the ground in front of the rodent's colony were installed...
October 2016: Journal of Vector Borne Diseases
https://www.readbyqxmd.com/read/27996305/infection-control-and-patient-discomfort-with-an-alternative-plastic-barrier-in-intraoral-digital-radiography
#10
Arnon Charuakkra, Sangsom Prapayasatok, Apirum Janhom, Karune Verochana, Phattaranant Mahasantipiya
OBJECTIVE: 1) to compare the efficacy of a commercially-available hygienic sheath and an alternative plastic bag in preventing contamination of the imaging plate during intraoral radiography, and 2) to compare patient discomfort when using the hygienic sheath and the plastic bag. METHODS: Sixty sterilized size 2 imaging plates covered with either the hygienic sheath (n = 30) or the plastic bag (n = 30) were used to simulate digital periapical radiographic examination in 30 volunteer patients...
December 20, 2016: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/27996080/digest-on-the-temporal-evolution-of-reproductive-isolation1
#11
Spencer Ingley
Speciation research has long focused on understanding how reproductive barriers-sometimes referred to as the "currency" of speciation-contribute to genetic isolation between divergent lineages (Coyne and Orr 2004). These reproductive barriers include those that occur before mating takes place (e.g., sexual, habitat, and temporal isolation) and after (e.g., gametic incompatibility, hybrid sterility, and sexual/ecological selection against hybrids). Given that the speciation process is typically too long to observe in its entirety, researchers often approach the problem of understanding how barriers evolve by studying barriers between taxa at different stages of divergence...
December 20, 2016: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/27994152/disrupting-the-blood-brain-barrier-by-focused-ultrasound-induces-sterile-inflammation
#12
Zsofia I Kovacs, Saejeong Kim, Neekita Jikaria, Farhan Qureshi, Blerta Milo, Bobbi K Lewis, Michele Bresler, Scott R Burks, Joseph A Frank
MRI-guided pulsed focused ultrasound (pFUS) combined with systemic infusion of ultrasound contrast agent microbubbles (MB) causes localized blood-brain barrier (BBB) disruption that is currently being advocated for increasing drug or gene delivery in neurological diseases. The mechanical acoustic cavitation effects of opening the BBB by low-intensity pFUS+MB, as evidenced by contrast-enhanced MRI, resulted in an immediate damage-associated molecular pattern (DAMP) response including elevations in heat-shock protein 70, IL-1, IL-18, and TNFα indicative of a sterile inflammatory response (SIR) in the parenchyma...
January 3, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27990188/application-of-laser-irradiation-for-restorative-treatments
#13
Amin Davoudi, Maryam Sanei, Hamid Badrian
Nowadays, lasers are widely used in many fields of medicine. Also, they can be applied at many branches of dental practice such as diagnosis, preventive procedures, restorative treatments, and endodontic therapies. Procedures like caries removal, re-mineralization, and vital pulp therapy are the most noticeable effects of laser irradiation which has gained much attention among clinicians. With controlled and appropriate wavelength, they can help stimulating dentinogenesis, controlling pulpal hemorrhage, sterilization, healing of collagenic proteins, formation of a fibrous matrix, and inducing hard tissue barrier...
2016: Open Dentistry Journal
https://www.readbyqxmd.com/read/27990145/oxidative-burst-dependent-netosis-is-implicated-in-the-resolution-of-necrosis-associated-sterile-inflammation
#14
Mona H C Biermann, Malgorzata J Podolska, Jasmin Knopf, Christiane Reinwald, Daniela Weidner, Christian Maueröder, Jonas Hahn, Deborah Kienhöfer, Alexandre Barras, Rabah Boukherroub, Sabine Szunerits, Rostyslav Bilyy, Markus Hoffmann, Yi Zhao, Georg Schett, Martin Herrmann, Luis E Munoz
Necrosis is associated with a profound inflammatory response. The regulation of necrosis-associated inflammation, particularly the mechanisms responsible for resolution of inflammation is incompletely characterized. Nanoparticles are known to induce plasma membrane damage and necrosis followed by sterile inflammation. We observed that injection of metabolically inert nanodiamonds resulted in paw edema in WT and Ncf1** mice. However, while inflammation quickly resolved in WT mice, it persisted over several weeks in Ncf1** mice indicating failure of resolution of inflammation...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27924201/central-line-associated-bloodstream-infections-in-the-intensive-care-unit-importance-of-the-care-bundle
#15
Aynur Atilla, Zahide Doğanay, Hale Kefeli Çelik, Leman Tomak, Özgür Günal, S Sırrı Kılıç
BACKGROUND: The importance and efficacy of a care bundle for preventing central line-associated bloodstream infections (CLABSIs) and infectious complications related to placing a central venous catheter (CVC) in patients in the intensive care unit (ICU). METHODS: A care bundle was implemented from July 2013 to June 2014 in a medical ICU and surgical ICU. Data were divided into three periods: the prior period (July 2012-June 2013), the intervention period (July 2013-June 2014; first and second periods), and the post-intervention period (July 2014-December 2014; third period)...
December 2016: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/27923272/elimination-of-diazinon-insecticide-from-cucumber-surface-by-atmospheric-pressure-air-dielectric-barrier-discharge-plasma
#16
Naghme Dorraki, Vahideh Mahdavi, Hamid Ghomi, Alireza Ghasempour
The food industry is in a constant search for new technologies to improve the commercial sterilization process of agricultural commodities. Plasma treatment may offer a novel and efficient method for pesticide removal from agricultural product surfaces. To study the proposed technique of plasma food treatment, the degradation behavior of diazinon insecticide by air-dielectric barrier discharge (DBD) plasma was investigated. The authors studied the effect of different plasma powers and treatment times on pesticide concentration in liquid form and coated on the surface of cucumbers, where the diazinon residue was analyzed with mass spectroscopy gas chromatography...
December 6, 2016: Biointerphases
https://www.readbyqxmd.com/read/27907138/barriers-to-modern-contraceptive-use-in-kinshasa-drc
#17
Mbadu Muanda, Parfait Gahungu Ndongo, Leah D Taub, Jane T Bertrand
Recent research from Kinshasa, DRC, has shown that only one in five married women uses modern contraception; over one quarter have an unmet need for family planning; and almost 400 health facilities across Kinshasa report that they provide modern contraception. This study addresses the question: with reasonable physical access and relatively high unmet need, why is modern contraceptive prevalence so low? To this end, the research team conducted 6 focus groups of women (non-users of any method, users of traditional methods, and users of modern methods) and 4 of husbands (of users of traditional methods and in non-user unions) in health zones with relatively strong physical access to FP services...
2016: PloS One
https://www.readbyqxmd.com/read/27902340/viral-bacterial-interactions-in-the-respiratory-tract
#18
Carla Bellinghausen, Gernot G U Rohde, Paul H M Savelkoul, Emiel F M Wouters, Frank R M Stassen
In the respiratory tract, viruses and bacteria can interact on multiple levels. It is well known that respiratory viruses, particularly influenza viruses, increase the susceptibility to secondary bacterial infections. Numerous mechanisms, including compromised physical and immunological barriers, and changes in the microenvironment have hereby been shown to contribute to the development of secondary bacterial infections. In contrast, our understanding of how bacteria shape a response to subsequent viral infection is still limited...
December 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27832813/the-need-for-maximal-sterile-barrier-precaution-in-routine-interventional-coronary-procedures-microbiology-analysis
#19
Avi Peretz, Fabio Kuzniec, Diab Ganem, Nabeeh Salman, Dahud Qarawani, Offer Amir
BACKGROUND: Maximal sterile barrier precautions (MSBP) including head coverings and face masks are advocated for use in invasive procedures, including coronary interventions. The rationale for MSBP assumes it is an obligatory measure for infection prevention. However, in many coronary catheterization laboratories, head coverings/face masks are not used in daily practice. This study prospectively evaluated the potential hazards of not routinely using head coverings/face masks in routine coronary interventions...
November 10, 2016: European Journal of Medical Research
https://www.readbyqxmd.com/read/27823943/patient-provider-conversations-about-sterilization-a-qualitative-analysis
#20
Katrina Kimport, Christine Dehlendorf, Sonya Borrero
OBJECTIVES: Although female sterilization is the second most commonly used contraceptive method in the US, research suggests that providers may serve as barriers to desired sterilization. STUDY DESIGN: We conducted a modified grounded theory analysis of audio-recorded contraceptive counseling visits with 52 women who specified on a previsit survey that they wanted no future children and a supplemental analysis of visits with 14 women who wanted or were unsure about future children in which sterilization was mentioned...
November 4, 2016: Contraception
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