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https://www.readbyqxmd.com/read/28938082/pseudacteon-phorid-flies-host-specificity-and-impacts-on-solenopsis-fire-ants
#1
Li Chen, Henry Y Fadamiro
Human commerce has resulted in the spread of the imported fire ants, Solenopsis species, worldwide. Six species of parasitic Pseudacteon phorid flies that are highly host specific to the Solenopsis saevissima complex of Solenopsis fire ants have been successfully released in the southern United States. The presence of Pseudacteon phorid flies, in addition to having direct mortality effects on their host ants, modifies foraging behavior and disrupts interspecific competition between host species and other ant species in the community...
September 22, 2017: Annual Review of Entomology
https://www.readbyqxmd.com/read/28936424/acid-stress-response-mechanisms-of-group-b-streptococci
#2
REVIEW
Sarah Shabayek, Barbara Spellerberg
Group B streptococcus (GBS) is a leading cause of neonatal mortality and morbidity in the United States and Europe. It is part of the vaginal microbiota in up to 30% of pregnant women and can be passed on to the newborn through perinatal transmission. GBS has the ability to survive in multiple different host niches. The pathophysiology of this bacterium reveals an outstanding ability to withstand varying pH fluctuations of the surrounding environments inside the human host. GBS host pathogen interations include colonization of the acidic vaginal mucosa, invasion of the neutral human blood or amniotic fluid, breaching of the blood brain barrier as well as survival within the acidic phagolysosomal compartment of macrophages...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28931747/the-cell-on-the-edge-of-life-and-death-crosstalk-between-autophagy-and-apoptosis
#3
Daniela Kasprowska-Liśkiewicz
Recently, the crosstalk between autophagy and apoptosis has attracted broader attention. Basal autophagy serves to maintain cell homeostasis, while the upregulation of this process is an element of stress response that enables the cell to survive under adverse conditions. Autophagy may also determine the fate of the cell through its interactions with cell death pathways. The protein networks that control the initiation and the execution phase of these two processes are highly interconnected. Several scenarios for the crosstalk between autophagy and apoptosis exist...
September 21, 2017: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/28931545/regulation-of-genes-related-to-cholesterol-metabolism-in-rainbow-trout-oncorhynchus-mykiss-fed-plant-based-diet
#4
Tengfei Zhu, Genevieve Corraze, Elisabeth Plagnes-Juan, Edwige Quillet, Mathilde Dupont-Nivet, Sandrine Skiba-Cassy
Compared to fishmeal and fish oil, plant ingredients differ not only in the protein content, amino acid and fatty acid profiles but are also devoid of cholesterol, the major component of cell membrane and precursor of several bioactive compounds. Based on these nutritional characteristics, plant-based diets can affect fish physiology and cholesterol metabolism. In order to investigate the mechanisms underlying cholesterol homeostasis, rainbow trout were fed from 1g body weight during six months with a totally plant-based diet (V), a marine diet (M) and a marine restricted diet (MR) with feed intake adjusted to that of the V group...
September 20, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28931304/racial-discrimination-binge-drinking-and-negative-drinking-consequences-among-black-college-students-serial-mediation-by-depressive-symptoms-and-coping-motives
#5
Jessica M Desalu, Jueun Kim, Michelle J Zaso, Sydnee R Corriders, Jacoby A Loury, Monique L Minter, Aesoon Park
OBJECTIVES: Experiences of racial discrimination have been associated with diverse negative health outcomes among racial minorities. However, extant findings of the association between racial discrimination and alcohol behaviors among Black college students are mixed. The current study examined mediating roles of depressive symptoms and coping drinking motives in the association of perceived racial discrimination with binge drinking and negative drinking consequences. DESIGN: Data were obtained from a cross-sectional study of Black college students attending a predominantly White institution in the northeastern US (N = 251, 66% female, mean age = 20 years)...
September 21, 2017: Ethnicity & Health
https://www.readbyqxmd.com/read/28930972/study-of-protein-protein-interactions-in-autophagy-research
#6
Secil Erbil-Bilir, Nur M Kocaturk, Melih Yayli, Devrim Gozuacik
Protein-protein interactions are important for understanding cellular signaling cascades and identifying novel pathway components and protein dynamics. The majority of cellular activities require physical interactions between proteins. To analyze and map these interactions, various experimental techniques as well as bioinformatics tools were developed. Autophagy is a cellular recycling mechanism that allows the cells to cope with different stressors, including nutrient deprivation, chemicals, and hypoxia. In order to better understand autophagy-related signaling events and to discover novel factors that regulate protein complexes in autophagy, we performed protein-protein interaction screens...
September 9, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28930235/current-usage-of-traditional-chinese-medicine-for-breast-cancer-a-narrative-approach-to-the-experiences-of-women-with-breast-cancer-in-australia-a-pilot-study
#7
Dianna Porter, Suzanne Cochrane, Xiaoshu Zhu
Background: The use of Traditional Chinese Medicine (TCM) by breast cancer patients is growing. Few studies have examined the complexity of breast cancer survivors' attitudes, lived experiences, barriers, and perceptions in using TCM as part of their treatment journey. This article examines breast cancer survivors' experiences, perceptions of, and benefits (or not) in using TCM. Methods: Qualitative research, using semi-structured interviews, was the chosen methodology. Results: Participants used TCM as a form of self-help and as a complement, not an alternative, to standard care...
April 21, 2017: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/28930060/understanding-mechanisms-of-change-for-brief-alcohol-interventions-among-youth-examination-of-within-session-interactions
#8
Maureen A Walton, Quyen M Ngo, Stephen T Chermack, Frederic C Blow, Peter F Ehrlich, Erin E Bonar, Rebecca M Cunningham
OBJECTIVE: Alcohol brief interventions (BIs) for youth are efficacious, but effect sizes found have been modest. This article presents secondary data analyses from a randomized controlled trial of motivational interviewing-based (MI) alcohol BIs among youth in an emergency department, examining within-session predictors of alcohol outcomes at 3 months among those receiving BIs. METHOD: Risky drinkers (ages 14-20) received either a computer BI (n = 277) or therapist BI (n = 278)...
September 2017: Journal of Studies on Alcohol and Drugs
https://www.readbyqxmd.com/read/28928205/bola-is-required-for-the-accurate-regulation-of-c-di-gmp-a-central-player-in-biofilm-formation
#9
Ricardo N Moreira, Clémentine Dressaire, Susana Barahona, Lisete Galego, Volkhard Kaever, Urs Jenal, Cecília M Arraiano
The bacterial second messenger cyclic dimeric GMP (c-di-GMP) is a nearly ubiquitous intracellular signaling molecule involved in the transition from the motile to the sessile/biofilm state in bacteria. C-di-GMP regulates various cellular processes, including biofilm formation, motility, and virulence. BolA is a transcription factor that promotes survival in different stresses and is also involved in biofilm formation. Both BolA and c-di-GMP participate in the regulation of motility mechanisms leading to similar phenotypes...
September 19, 2017: MBio
https://www.readbyqxmd.com/read/28927649/coping-with-pain-in-intimate-situations-applying-the-avoidance-endurance-model-to-women-with-vulvovaginal-pain
#10
I K Flink, L Engman, M M Ter Kuile, J Thomtén, S J Linton
BACKGROUND AND AIMS: Chronic vulvovaginal pain is strikingly common and has a serious impact on women's lives. Nevertheless, there are few longitudinal studies focusing on mechanisms involved in the pain development. One area of interest is how women cope with sexual activities and how this affects their pain. In this study, avoidance and endurance coping behaviors were explored as possible mediators of the relation between catastrophizing and pain, cross-sectionally and longitudinally...
September 15, 2017: Scandinavian Journal of Pain
https://www.readbyqxmd.com/read/28927509/health-care-workers-experiences-of-aggression
#11
Katelyn Kerr, Joanne Oram, Helen Tinson, David Shum
PRIMARY OBJECTIVE: To identify the prevalence of patient aggression against health care workers, the consequences and coping mechanisms. DESIGN: Retrospective cross-sectional design. SUBJECTS: 50 participants comprised 37 nurses, 1 ward staff, 12 allied health staff employed in two brain injury wards with experience ranging from 3months to 34years. SETTING: Neurosciences and Brain Injury Rehabilitation wards of a metropolitan tertiary hospital in Brisbane...
October 2017: Archives of Psychiatric Nursing
https://www.readbyqxmd.com/read/28926952/medium-access-control-protocols-for-cognitive-radio-ad-hoc-networks-a-survey
#12
REVIEW
Mahdi Zareei, A K M Muzahidul Islam, Sabariah Baharun, Cesar Vargas-Rosales, Leyre Azpilicueta, Nafees Mansoor
New wireless network paradigms will demand higher spectrum use and availability to cope with emerging data-hungry devices. Traditional static spectrum allocation policies cause spectrum scarcity, and new paradigms such as Cognitive Radio (CR) and new protocols and techniques need to be developed in order to have efficient spectrum usage. Medium Access Control (MAC) protocols are accountable for recognizing free spectrum, scheduling available resources and coordinating the coexistence of heterogeneous systems and users...
September 16, 2017: Sensors
https://www.readbyqxmd.com/read/28926633/effects-of-salinity-on-the-cellular-physiological-responses-of-natrinema-sp-j7-2
#13
Yunjun Mei, Huan Liu, Shunxi Zhang, Ming Yang, Chun Hu, Jian Zhang, Ping Shen, Xiangdong Chen
The halophilic archaea (haloarchaea) live in hyersaline environments such as salt lakes, salt ponds and marine salterns. To cope with the salt stress conditions, haloarchaea have developed two fundamentally different strategies: the "salt-in" strategy and the "compatible-solute" strategy. Although investigation of the molecular mechanisms underlying the tolerance to high salt concentrations has made outstanding achievements, experimental study from the aspect of transcription is rare. In the present study, we monitored cellular physiology of Natrinema sp...
2017: PloS One
https://www.readbyqxmd.com/read/28925881/coping-with-stress-during-aging-the-importance-of-a-resilient-brain
#14
P Sampedro-Piquero, P Álvarez-Suárez, A Begega
BACKGROUND: Resilience is the ability to achieve a positive outcome when we are in the face of adversity. It supposes an active resistance to adversity by coping mechanisms in which genetic, molecular, neural and environmental factors are involved. Resilience has been usually studied in early ages and few is known about it during aging. METHODS: In this review, we will address the age-related changes in the brain mechanisms involved in regulating the stress response...
September 15, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28923704/cloning-characterisation-docking-and-expression-analysis-of-3-beta-hydroxysteroid-dehydrogenase-during-ontogenetic-development-and-annual-reproductive-cycles-in-catfish-clarias-batrachus
#15
Irfan Ahmad Bhat, Mohd Ashraf Rather, Mir Ishfaq Nazir, Gireesh-Babu Pathakota, Mukunda Goswami, J K Sundaray, Rupam Sharma
Fish like higher animals, have a well-defined mechanism to produce sex steroids that play a critical role in gonadal development and maturation. In this study, we aimed to analyse the expression pattern of 3β-HSD in different tissues, during ontogenetic development and gonadal recrudescence of Clarias batrachus. A full-length cDNA of 1617 bp including an open reading frame (ORF) of 1125 bp encoding 374 amino acids was isolated from testes of C. batrachus. The docking analysis between C. batrachus 3β-HSD protein and eurycomanone exhibited high binding affinity toward each other with total energy of -108...
September 11, 2017: Theriogenology
https://www.readbyqxmd.com/read/28923312/autophagy-its-mechanisms-and-regulation-implications-in-neurodegenerative-diseases
#16
REVIEW
Milad Moloudizargari, Mohammad Hossein Asghari, Emad Ghobadi, Marjan Fallah, Shima Rasouli, Mohammad Abdollahi
Autophagy is a major regulatory cellular mechanism which gives the cell an ability to cope with some of the destructive events that normally occur within a metabolically living cell. This is done by maintaining the cellular homeostasis, clearance of damaged organelles and proteins and recycling necessary molecules like amino acids and fatty acids. There is a wide array of factors that influence autophagy in the state of health and disease. Disruption of these mechanisms may not only give rise to several autophagy-related disease, but also it can occur as the result of intracellular changes induced during disease pathogenesis causing exacerbation of the disease...
September 15, 2017: Ageing Research Reviews
https://www.readbyqxmd.com/read/28922767/photosynthetic-and-metabolic-acclimation-to-repeated-drought-events-play-key-roles-in-drought-tolerance-in-coffee
#17
Paulo E Menezes-Silva, Lilian M V P Sanglard, Rodrigo T Ávila, Leandro E Morais, Samuel C V Martins, Priscilla Nobres, Camila M Patreze, Marcio A Ferreira, Wagner L Araújo, Alisdair R Fernie, Fábio M DaMatta
Over the last decades, most information on the mechanisms underlying tolerance to drought has been gained by considering this stress as a single event that happens just once in the life of a plant, in contrast to what occurs under natural conditions where recurrent drought episodes are the rule. Here we explored mechanisms of drought tolerance in coffee (Coffea canephora) plants from a broader perspective, integrating key aspects of plant physiology and biochemistry. We show that plants exposed to multiple drought events displayed higher photosynthetic rates, which were largely accounted for by biochemical rather than diffusive or hydraulic factors, than those submitted to drought for the first time...
July 10, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28921675/altered-cav1-2-function-in-the-timothy-syndrome-mouse-model-produces-ascending-serotonergic-abnormalities
#18
Daniel G Ehlinger, Kathryn G Commons
Polymorphism in the gene CACNA1C, encoding the pore-forming subunit of Cav1.2 L-type calcium channels, has one of the strongest genetic linkages to schizophrenia, bipolar disorder, and major depressive disorder: psychopathologies in which serotonin signaling has been implicated. Additionally, a gain-of-function mutation in CACNA1C is responsible for the neurodevelopmental disorder Timothy Syndrome that presents with prominent behavioral features on the autism spectrum. Given an emerging role for serotonin in the etiology of autism spectrum disorders, we investigate the relationship between Cav1...
September 16, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28921474/origins-of-phantom-limb-pain
#19
Damien P Kuffler
Phantom limb pain (PLP) is a chronic neuropathic pain occurring in 45-85% of patients who undergo major amputations of the upper and lower extremities. Chronic pain is physically and mentally debilitating, affecting an individual's potential for self-care and the performance of daily living activities essential for personal and economic independence. In addition, chronic pain may lead to depression and feelings of hopelessness. A National Center for Biotechnology Information study found that in the USA alone, the annual cost of dealing with neuropathic pain is more than $600 billion, with an estimated 20 million people in the USA suffering this condition...
September 18, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28921418/coping-with-phantom-limb-pain
#20
Damien P Kuffler
Phantom limb pain is a chronic neuropathic pain that develops in 45-85% of patients who undergo major amputations of the upper and lower extremities and appears predominantly during two time frames following an amputation: the first month and later about 1 year. Although in most patients the frequency and intensity of pain diminish over time, severe pain persists in about 5-10%. It has been proposed that factors in both the peripheral and central nervous systems play major roles in triggering the development and maintenance of pain associated with extremity amputations...
September 18, 2017: Molecular Neurobiology
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