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https://www.readbyqxmd.com/read/28821650/feedback-signal-from-motoneurons-influences-a-rhythmic-pattern-generator
#1
Horacio G Rotstein, Elisa Schneider, Lidia Szczupak
Motoneurons are not mere output units of neuronal circuits that control motor behavior, but participate in pattern generation. Research on the circuit that controls the crawling motor behavior in leeches indicated that motoneurons participate as modulators of this rhythmic motor pattern. Crawling results from successive bouts of elongation and contraction of the whole leech body. In the isolated segmental ganglia dopamine can induce a rhythmic antiphasic activity of the motoneurons that control contraction (DE-3 motoneurons) and elongation (CV motoneurons)...
August 16, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28814392/temporal-eating-patterns-associations-with-nutrient-intakes-diet-quality-and-measures-of-adiposity
#2
Rebecca M Leech, Anna Timperio, Katherine M Livingstone, Anthony Worsley, Sarah A McNaughton
Background: Some evidence suggests that higher energy intake (EI) later in the day is associated with poor diet quality and obesity. However, EI at one eating occasion (EO) is also dependent on EI at surrounding EOs. Studies that examine the distribution of EOs across the day are rare.Objective: The aim of this study was to examine associations between temporal eating patterns, nutrient intakes, diet quality, and measures of adiposity in a representative sample of Australian adults.Design: Dietary data from two 24-h recalls collected during the cross-sectional 2011-2012 Australian National Nutrition and Physical Activity Survey were analyzed (n = 4544 adults, aged ≥19 y)...
August 16, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28794283/metabolic-and-immune-effects-of-immunotherapy-with-proinsulin-peptide-in-human-new-onset-type-1-diabetes
#3
Mohammad Alhadj Ali, Yuk-Fun Liu, Sefina Arif, Danijela Tatovic, Hina Shariff, Vivienne B Gibson, Norkhairin Yusuf, Roman Baptista, Martin Eichmann, Nedyalko Petrov, Susanne Heck, Jennie H M Yang, Timothy I M Tree, Irma Pujol-Autonell, Lorraine Yeo, Lucas R Baumard, Rachel Stenson, Alex Howell, Alison Clark, Zoe Boult, Jake Powrie, Laura Adams, Florence S Wong, Stephen Luzio, Gareth Dunseath, Kate Green, Alison O'Keefe, Graham Bayly, Natasha Thorogood, Robert Andrews, Nicola Leech, Frank Joseph, Sunil Nair, Susan Seal, HoYee Cheung, Craig Beam, Robert Hills, Mark Peakman, Colin M Dayan
Immunotherapy using short immunogenic peptides of disease-related autoantigens restores immune tolerance in preclinical disease models. We studied safety and mechanistic effects of injecting human leukocyte antigen-DR4(DRB1*0401)-restricted immunodominant proinsulin peptide intradermally every 2 or 4 weeks for 6 months in newly diagnosed type 1 diabetes patients. Treatment was well tolerated with no systemic or local hypersensitivity. Placebo subjects showed a significant decline in stimulated C-peptide (measuring insulin reserve) at 3, 6, 9, and 12 months versus baseline, whereas no significant change was seen in the 4-weekly peptide group at these time points or the 2-weekly group at 3, 6, and 9 months...
August 9, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28769634/a-new-species-of-leech-of-the-genus-placobdella-hirudinida-glossiphoniidae-from-the-american-alligator-alligator-mississippiensis-in-mississippi-usa
#4
Dennis J Richardson, William E Moser, Charlotte I Hammond, Eric A Lazo-Wasem, Chris T McAllister, Eric E Pulis
To date, the only species of leech reported from the American Alligator, Alligator mississippiensis is Placobdella multilineata. Seven specimens of a previously undescribed species of Placobdella were collected from the feet and lower jaw of a single female alligator from the Pascagoula River Wildlife Management Area, George County, Mississippi. The new species was named Placobdella siddalli Richardson & Moser, sp. n., in honor of the contributions of Dr. Mark Siddall to our understanding of the biology of leeches...
2017: ZooKeys
https://www.readbyqxmd.com/read/28769606/helobdella-blinni-sp-n-hirudinida-glossiphoniidae-a-new-species-inhabiting-montezuma-well-arizona-usa
#5
Rebecca K Beresic-Perrins, Fredric R Govedich, Kelsey Banister, Bonnie A Bain, Devin Rose, Stephen M Shuster
A new leech species Helobdella blinnisp. n., is described from Montezuma Well, an isolated travertine spring mound located in central Arizona, USA. In its native habitat, Helobdella blinni had been previously identified as Helobdella stagnalis (Linnaeus, 1758), which was later reclassified to Helobdella modesta (Verrill, 1872). Similar to the European Helobdella stagnalis and North American Helobdella modesta, Helobdella blinni has six pairs of testisacs, five pairs of smooth crop caecae, one lobed pair of posteriorly-directed crop caecae, one pair of eyes, a nuchal scute, and diffuse salivary glands...
2017: ZooKeys
https://www.readbyqxmd.com/read/28761369/capsaicin-8-patch-treatment-for-amputation-stump-and-phantom-limb-pain-a-clinical-and-functional-mri-study
#6
Rosario Privitera, Rolfe Birch, Marco Sinisi, Iordan R Mihaylov, Robert Leech, Praveen Anand
PURPOSE: The aim of this study was to measure the efficacy of a single 60 min application of capsaicin 8% patch in reducing chronic amputation stump and phantom limb pain, associated hypersensitivity with quantitative sensory testing, and changes in brain cortical maps using functional MRI (fMRI) scans. METHODS: A capsaicin 8% patch (Qutenza) treatment study was conducted on 14 patients with single limb amputation, who reported pain intensity on the Numerical Pain Rating Scale ≥4/10 for chronic stump or phantom limb pain...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28739158/assessment-and-management-of-radiotherapy-induced-toxicity-in-older-patients
#7
Anita O'Donovan, Michelle Leech, Charles Gillham
Radiotherapy is an attractive treatment option for older adults, especially where surgery and chemotherapy pose too great a risk. Radiotherapy toxicity may be divided into acute/early and late effects of treatment. The latter may have limited relevance to an older patient with competing causes of mortality due to significant comorbidity. Altered fractionation regimes have been employed in numerous sites, with no significant toxicity impact. These offer greater convenience in the elderly, especially those with limited social support or in active caregiving roles...
July 21, 2017: Journal of Geriatric Oncology
https://www.readbyqxmd.com/read/28737547/quality-improvement-initiative-for-family-centered-care-in-the-neonatal-intensive-care-unit-of-a-tertiary-hospital-in-south-africa
#8
Carin Maree, Poppy Kekana, Christa van der Walt, Mariatha Yazbek, Ronell Leech
The introduction of family-centered care in the neonatal intensive care unit was identified as a high priority to facilitate bonding and attachment with potential positive outcomes for the parents and infants. The aim of the study was, therefore, to develop and implement a quality improvement initiative to foster family-centered care in a tertiary neonatal intensive care unit from birth onward. A pretest posttest intervention design was used using mixed methods over 3 phases to determine the perceived level of family-centered care according to healthcare professionals and parents using self-administered questionnaires; to develop and implement a quality improvement initiative to enhance family-centered care in a neonatal intensive care unit using a nominal group technique, followed by the quality improvement process; and to evaluate the outcomes of the initiative by repeating the self-administered questionnaires to parents and staff...
July 2017: Journal of Perinatal & Neonatal Nursing
https://www.readbyqxmd.com/read/28725633/exploiting-leech-saliva-to-treat-osteoarthritis-a-provocative-perspective
#9
Edwin L Cooper, Natalie Mologne
Plant and animal-derived products are crucial components in complementary and alternative medicine. Although modern medicine has provided numerous innovations and advancements, these often fail to reveal new and dependable, inexpensive treatments nor real cures that are relatively free of adverse side effects. We present evidence that hirudotherapy, which utilizes leeches, improves certain diseases, including osteoarthritis. Osteoarthritis, a disease in joints, could benefit from use of medicinal peptides found in leech saliva, components of its immune system...
July 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/28724917/endocannabinoids-have-opposing-effects-on-behavioral-responses-to-nociceptive-and-non-nociceptive-stimuli
#10
Torrie Summers, Brandon Hanten, Warren Peterson, Brian Burrell
The endocannabinoid system is thought to modulate nociceptive signaling making it a potential therapeutic target for treating pain. However, there is evidence that endocannabinoids have both pro- and anti-nociceptive effects. In previous studies using Hirudo verbana (the medicinal leech), endocannabinoids were found to depress nociceptive synapses, but enhance non-nociceptive synapses. Here we examined whether endocannabinoids have similar bidirectional effects on behavioral responses to nociceptive vs. non-nociceptive stimuli in vivo...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28719229/experiences-using-pre-exposure-prophylaxis-for-safer-conception-among-hiv-serodiscordant-heterosexual-couples-in-the-united-states
#11
Angela R Bazzi, Ashley A Leech, Dea L Biancarelli, Meg Sullivan, Mari-Lynn Drainoni
Antiretroviral pre-exposure prophylaxis (PrEP) is a promising HIV prevention strategy for HIV serodiscordant couples (HIV-infected male, uninfected female) seeking safer conception. However, most research on PrEP for safer conception has focused on couples in sub-Saharan Africa; little is known about the perspectives or experiences of heterosexual couples in the United States. We conducted qualitative interviews with six couples (six women and five of their male partners) receiving PrEP for conception services at an urban safety net hospital in the US Northeast...
August 2017: AIDS Patient Care and STDs
https://www.readbyqxmd.com/read/28711029/an-oxygen-independent-and-membrane-less-glucose-biobattery-supercapacitor-hybrid-device
#12
Xinxin Xiao, Peter Ó Conghaile, Dónal Leech, Roland Ludwig, Edmond Magner
Enzymatic biofuel cells can generate electricity directly from the chemical energy of biofuels in physiological fluids, but their power density is significantly limited by the performance of the cathode which is based on oxygen reduction for in vivo applications. An oxygen-independent and membrane-less glucose biobattery was prepared that consists of a dealloyed nanoporous gold (NPG) supported glucose dehydrogenase (GDH) bioanode, immobilised with the assistance of conductive polymer/Os redox polymer composites, and a solid-state NPG/MnO2 cathode...
July 11, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28699036/spatiotemporal-expression-of-a-twist-homolog-in-the-leech-helobdella-austinensis
#13
Jin-Se Kim, Brenda Irene Medina Jiménez, Hee-Jin Kwak, Soon Cheol Park, Ping Xiao, David A Weisblat, Sung-Jin Cho
Genes of the twist family encode bHLH transcription factors known to be involved in the regulation and differentiation of early mesoderm. Here, we report our characterization of Hau-twist, a twist homolog from the leech Helobdella austinensis, a tractable lophotrochozoan representative. Hau-twist was expressed in segmental founder cells of the mesodermal lineage, in subsets of cells within the mesodermal lineage of the germinal plate, in circumferential muscle fibers of a provisional integument during segmentation and organogenesis stages and on the ventral side of the developing proboscis...
July 2017: Development Genes and Evolution
https://www.readbyqxmd.com/read/28695833/investigation-on-the-collection-and-economy-of-medicinal-leeches-from-wetlands-around-lake-e%C3%A4-irdir-turkey
#14
Mustafa Ceylan, Osman Çetinkaya
OBJECTIVE: This study aimed to investigate the collection and economy of medicinal leeches from wetlands around Lake Eğirdir, Turkey. METHODS: Data used in this study were based on findings, observations, and face-to-face interviews obtained from a research performed between January 2013 - February 2016 on medicinal leech populations. RESULTS: The leech collecting is carried out without any permission, by both local peoples and others especially who are from Afyonkarahisar...
June 2017: Türkiye Parazitolojii Dergisi
https://www.readbyqxmd.com/read/28692290/top-down-atmospheric-ionization-mass-spectrometry-microscopy-combined-with-proteogenomics
#15
Cheng-Chih Hsu, Michael W Baker, Terry Gaasterland, Michael J Meehan, Eduardo R Macagno, Pieter C Dorrestein
Mass spectrometry-based protein analysis has become an important methodology for proteogenomic mapping by providing evidence for the existence of proteins predicted at the genomic level. However, screening and identification of proteins directly on tissue samples, where histological information is preserved, remain challenging. Here we demonstrate that the ambient ionization source, nanospray desorption electrospray ionization (nanoDESI), interfaced with light microscopy allows for protein profiling directly on animal tissues at the microscopic scale...
July 24, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28684464/ammonia-independent-sodium-uptake-mediated-by-na-channels-and-nhes-in-the-freshwater-ribbon-leech-nephelopsis-obscura
#16
Alex R Quijada-Rodriguez, Aaron G Schultz, Jonathan M Wilson, Yuhe He, Garett J P Allen, Greg G Goss, Dirk Weihrauch
Freshwater organisms actively take up ions from their environment to counter diffusive ion losses due to inhabiting hypo-osmotic environments. The mechanisms behind active Na(+) uptake are quite well understood in freshwater teleosts, however, the mechanisms employed by invertebrates are not. Pharmacological and molecular approaches were used to investigate Na(+) uptake mechanisms and their link to ammonia excretion in the ribbon leech Nephelopsis obscura At the molecular level, we identified a Na(+) channel and a Na(+)/H(+)-exchanger (NHE) in the skin of N...
July 6, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28676576/stimulating-multiple-demand-cortex-enhances-vocabulary-learning
#17
Magdalena W Sliwinska, Inês R Violante, Richard J S Wise, Robert Leech, Joseph T Devlin, Fatemeh Geranmayeh, Adam Hampshire
It is well established that networks within multiple-demand cortex (MDC) become active when diverse skills and behaviors are being learnt. However, their causal role in learning remains to be established. In the present study, we first performed functional magnetic resonance imaging on healthy female and male human participants to confirm that MDC was most active in the initial stages of learning a novel vocabulary, consisting of pronounceable nonwords (pseudowords), each associated with a picture of a real object...
August 9, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28675913/institutional-outcomes-of-leech-therapy-for-venous-congestion-in-87-patients
#18
Agustin Cornejo, Ronnie L Shammas, Luke P Poveromo, Hui-Jie Lee, Scott T Hollenbeck
No abstract text is available yet for this article.
July 4, 2017: Journal of Reconstructive Microsurgery
https://www.readbyqxmd.com/read/28666786/phylogenetic-analysis-of-placobdella-hirudinea-rhynchobdellida-glossiphoniidae-with-consideration-of-coi-variation
#19
Danielle de Carle, Alejandro Oceguera-Figueroa, Michael Tessler, Mark E Siddall, Sebastian Kvist
Placobdella is a genus of blood-feeding leeches in the family Glossiphoniidae. Historically, species of Placobdella have posed difficulty for systematists owing to a lack of informative morphological characters and the preponderance of inadequate or incomplete species descriptions. Here, we conduct a phylogenetic analysis of 55 individuals representing 20 of the 24 currently recognized nominal taxa using COI, ND1, 12S rDNA and ITS sequences under parsimony, maximum likelihood and Bayesian inference. We also examine the isolated COI phylogeny for the genus using an expanded dataset encompassing three additional species not included in the concatenated dataset...
June 27, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28633661/prevalence-of-arthritis-according-to-age-sex-and-socioeconomic-status-in-six-low-and-middle-income-countries-analysis-of-data-from-the-world-health-organization-study-on-global-ageing-and-adult-health-sage-wave-1
#20
Sharon L Brennan-Olsen, S Cook, M T Leech, S J Bowe, P Kowal, N Naidoo, I N Ackerman, R S Page, S M Hosking, J A Pasco, M Mohebbi
BACKGROUND: In higher income countries, social disadvantage is associated with higher arthritis prevalence; however, less is known about arthritis prevalence or determinants in low to middle income countries (LMICs). We assessed arthritis prevalence by age and sex, and marital status and occupation, as two key parameters of socioeconomic position (SEP), using data from the World Health Organization Study on global AGEing and adult health (SAGE). METHODS: SAGE Wave 1 (2007-10) includes nationally-representative samples of older adults (≥50 yrs), plus smaller samples of adults aged 18-49 yrs...
June 21, 2017: BMC Musculoskeletal Disorders
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