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https://www.readbyqxmd.com/read/28212347/molecularly-imprinted-sol-gel-based-qcm-sensor-arrays-for-the-detection-and-recognition-of-volatile-aldehydes
#1
Chuanjun Liu, Bartosz Wyszynski, Rui Yatabe, Kenshi Hayashi, Kiyoshi Toko
The detection and recognition of metabolically derived aldehydes, which have been identified as important products of oxidative stress and biomarkers of cancers; are considered as an effective approach for early cancer detection as well as health status monitoring. Quartz crystal microbalance (QCM) sensor arrays based on molecularly imprinted sol-gel (MISG) materials were developed in this work for highly sensitive detection and highly selective recognition of typical aldehyde vapors including hexanal (HAL); nonanal (NAL) and bezaldehyde (BAL)...
February 16, 2017: Sensors
https://www.readbyqxmd.com/read/28207856/biodiesel-production-potential-from-fat-fraction-of-municipal-waste-in-makkah
#2
K Shahzad, A S Nizami, M Sagir, M Rehan, S Maier, M Z Khan, O K M Ouda, I M I Ismail, A O BaFail
In the Kingdom of Saudi Arabia (KSA), millions of Muslims come to perform Pilgrimage every year. Around one million ton of municipal solid waste (MSW) is generated in Makkah city annually. The collected MSW is disposed of in the landfills without any treatment or energy recovery. As a result, greenhouse gas (GHG) emissions and contamination of the soil and water bodies along with leachate and odors are occurring in waste disposal vicinities. The composition of MSW shows that food waste is the largest waste stream (up to 51%) of the total generated MSW...
2017: PloS One
https://www.readbyqxmd.com/read/28199564/do-masculine-men-smell-better-an-association-between-skin-color-masculinity-and-female-preferences-for-body-odor
#3
Mariana L Carrito, Isabel M Santos, Laura Alho, Jacqueline Ferreira, Sandra C Soares, Pedro Bem-Haja, Carlos F Silva, David I Perrett
No abstract text is available yet for this article.
February 11, 2017: Chemical Senses
https://www.readbyqxmd.com/read/28187311/candidate-chemosensory-genes-identified-in-the-endoparasitoid-meteorus-pulchricornis-hymenoptera-braconidae-by-antennal-transcriptome-analysis
#4
Sheng Sheng, Cheng-Wu Liao, Yu Zheng, Yu Zhou, Yan Xu, Wen-Miao Song, Peng He, Jian Zhang, Fu-An Wu
Meteorus pulchricornis is an endoparasitoid wasp which attacks the larvae of various lepidopteran pests. We present the first antennal transcriptome dataset for M. pulchricornis. A total of 48,845,072 clean reads were obtained and 34,967 unigenes were assembled. Of these, 15,458 unigenes showed a significant similarity (E-value <10(-5)) to known proteins in the NCBI non-redundant protein database. Gene ontology (GO) and cluster of orthologous groups (COG) analyses were used to classify the functions of M...
January 31, 2017: Comparative Biochemistry and Physiology. Part D, Genomics & Proteomics
https://www.readbyqxmd.com/read/28158237/an-increase-in-visceral-fat-is-associated-with-a-decrease-in-the-taste-and-olfactory-capacity
#5
Jose Carlos Fernandez-Garcia, Juan Alcaide, Concepcion Santiago-Fernandez, M M Roca-Rodriguez, Zaida Aguera, Rosa Baños, Cristina Botella, Rafael de la Torre, Jose M Fernandez-Real, Gema Fruhbeck, Javier Gomez-Ambrosi, Susana Jimenez-Murcia, Jose M Menchon, Felipe F Casanueva, Fernando Fernandez-Aranda, Francisco J Tinahones, Lourdes Garrido-Sanchez
INTRODUCTION: Sensory factors may play an important role in the determination of appetite and food choices. Also, some adipokines may alter or predict the perception and pleasantness of specific odors. We aimed to analyze differences in smell-taste capacity between females with different weights and relate them with fat and fat-free mass, visceral fat, and several adipokines. MATERIALS AND METHODS: 179 females with different weights (from low weight to morbid obesity) were studied...
2017: PloS One
https://www.readbyqxmd.com/read/28152094/beetle-pollination-and-flowering-rhythm-of-annona-coriacea-mart-annonaceae-in-brazilian-cerrado-behavioral-features-of-its-principal-pollinators
#6
Marilza Silva Costa, Ricardo José Silva, Hipólito Ferreira Paulino-Neto, Mônica Josene Barbosa Pereira
The conservation and sustainable management of Annona coriacea requires knowledge of its floral and reproductive biology, and of its main pollinators and their life cycles. In this work, we analyzed these aspects in detail. Floral biology was assessed by observing flowers from the beginning of anthesis to senescence. The visiting hours and behavior of floral visitors in the floral chamber were recorded, as were the sites of oviposition. Excavations were undertaken around specimens of A. coriacea to determine the location of immature pollinators...
2017: PloS One
https://www.readbyqxmd.com/read/28056656/age-and-pubertal-status-related-changes-in-reports-of-perception-of-personal-odors
#7
Lenka Martinec Nováková, Dagmar Plotěná, Jan Havlíček
As previously suggested, preferences for kin body odor might undergo an adaptive change over the course of puberty in order to avoid potential inbreeding, resulting in aversion to body odor of the opposite-gender kin as individuals mature sexually. However, studies based on mutual body odor aversion are rather inconclusive. We therefore investigated whether children's reports of individuals smelling good or bad differed as a function of age and pubertal status. We asked 219 children (94 male) aged 10 to 15 years to assess their pubertal development using a standardized measure and to name individuals they thought smelled good or bad...
January 1, 2017: Perception
https://www.readbyqxmd.com/read/28053896/effects-of-4-week-continuous-ingestion-of-champignon-extract-on-halitosis-and-body-and-fecal-odor
#8
Jun Nishihira, Mie Nishimura, Aiko Tanaka, Akihiro Yamaguchi, Toshio Taira
This was placebo-controlled double-blind parallel-group comparative clinical trial targeting 80 men and women aged 50-79 years with halitosis and body and fecal odor. We investigated whether daily champignon extract ingestion for 4 weeks improved these conditions. Subjects were divided into four groups: a placebo group and 50, 500, and 1000 mg/day ingestion groups. No severe adverse events or side effects were noted during the study period. Compared with the placebo group, all champignon extract ingestion groups showed improvement or tendency toward improvement in halitosis and body and fecal odor...
January 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/28045639/a-retrospective-cohort-study-of-glossopharyngeal-nerve-taste-in-children-with-recurrent-acute-tonsillitis
#9
Courtney A Hill, Suveera Dang, Michael Beach, Eunice Y Chen
Objective To compare glossopharyngeal taste between healthy children and those with recurrent acute tonsillitis. Study Design Retrospective cohort study. Setting Pediatric clinics in a tertiary care medical center and satellite location. Subjects and Methods Smell and taste testing was administered to 80 well children and 64 children with recurrent acute tonsillitis (age range, 6-17 years). Smell testing was performed with the NIH Toolbox Odor Identification Test, with scores based on national averages for age and sex...
January 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28039314/olfaction-and-risk-of-dementia-in-a-biracial-cohort-of-older-adults
#10
Kristine Yaffe, Daniel Freimer, Honglei Chen, Keiko Asao, Andrea Rosso, Susan Rubin, Greg Tranah, Steve Cummings, Eleanor Simonsick
OBJECTIVE: Prior studies indicate that olfactory function may be an early marker for cognitive impairment, but the body of evidence has been largely restricted to white populations. METHODS: We studied 2,428 community-dwelling black and white older adults (baseline age 70-79 years) without dementia enrolled in the Health, Aging, and Body Composition (Health ABC) study. Olfaction was measured as odor identification (OI) with the 12-item Cross Cultural Smell Identification Test in year 3...
January 31, 2017: Neurology
https://www.readbyqxmd.com/read/28028122/evolution-of-chemosensory-gene-families-in-arthropods-insight-from-the-first-inclusive-comparative-transcriptome-analysis-across-spider-appendages
#11
Joel Vizueta, Cristina Frías-López, Nuria Macías-Hernández, Miquel A Arnedo, Alejandro Sánchez-Gracia, Julio Rozas
Unlike hexapods and vertebrates, in chelicerates, knowledge of the specific molecules involved in chemoreception comes exclusively from the comparative analysis of genome sequences. Indeed, the genomes of mites, ticks and spiders contain several genes encoding homologs of some insect membrane receptors and small soluble chemosensory proteins. Here, we conducted for the first time a comprehensive comparative RNA-Seq analysis across different body structures of a chelicerate: the nocturnal wandering hunter spider Dysdera silvatica Schmidt 1981...
December 27, 2016: Genome Biology and Evolution
https://www.readbyqxmd.com/read/28017607/a-simple-computational-model-of-the-bee-mushroom-body-can-explain-seemingly-complex-forms-of-olfactory-learning-and-memory
#12
Fei Peng, Lars Chittka
Honeybees are models for studying how animals with relatively small brains accomplish complex cognition, displaying seemingly advanced (or "non-elemental") learning phenomena involving multiple conditioned stimuli. These include "peak shift" [1-4]-where animals not only respond to entrained stimuli, but respond even more strongly to similar ones that are farther away from non-rewarding stimuli. Bees also display negative and positive patterning discrimination [5], responding in opposite ways to mixtures of two odors than to individual odors...
January 23, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28005625/a-prospective-study-of-axillary-hair-reduction-in-patients-treated-with-microwave-technology
#13
Jeremy A Brauer, Julia P Neckman, Brian Zelickson, David B Vasily, Roy G Geronemus
BACKGROUND: Removing unwanted body hair is a growing trend in society today, and there are many laser-based devices for hair reduction. There are some limitations to those methods, including the lack of efficacy for lighter color hair. OBJECTIVE: The objective was to quantify hair reduction in the axillae after treatment with a noninvasive microwave energy device. MATERIALS AND METHODS: A prospective, multicenter study was performed at 3 private dermatology clinics...
December 21, 2016: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/27989835/a-broadly-tuned-odorant-receptor-in-neurons-of-trichoid-sensilla-in-locust-locusta-migratoria
#14
Yinwei You, Dean P Smith, Mingyue Lv, Long Zhang
Insects have evolved sophisticated olfactory reception systems to sense exogenous chemical signals. Odorant receptors (ORs) on the membrane of chemosensory neurons are believed to be key molecules in sensing exogenous chemical cues. ORs in different species of insects are diverse and should tune a species to its own specific semiochemicals relevant to their survival. The orthopteran insect, locust (Locusta migratoria), is a model hemimetabolous insect. There is very limited knowledge on the functions of locust ORs although many locust OR genes have been identified in genomic sequencing experiments...
October 27, 2016: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/27981180/enhancement-of-striatum-dependent-memory-by-conditioned-fear-is-mediated-by-beta-adrenergic-receptors-in-the-basolateral-amygdala
#15
Travis D Goode, Kah-Chung Leong, Jarid Goodman, Stephen Maren, Mark G Packard
Emotional arousal can have a profound impact on various learning and memory processes. For example, unconditioned emotional stimuli (e.g., predator odor or anxiogenic drugs) enhance dorsolateral striatum (DLS)-dependent habit memory. These effects critically depend on a modulatory role of the basolateral complex of the amygdala (BLA). Recent work indicates that, like unconditioned emotional stimuli, exposure to an aversive conditioned stimulus (CS) (i.e., a tone previously paired with shock) can also enhance consolidation of DLS-dependent habit memory...
June 2016: Neurobiology of Stress
https://www.readbyqxmd.com/read/27916960/detection-of-volatile-metabolites-derived-from-garlic-allium-sativum-in-human-urine
#16
Laura Scheffler, Yvonne Sauermann, Anja Heinlein, Constanze Sharapa, Andrea Buettner
The metabolism and excretion of flavor constituents of garlic, a common plant used in flavoring foods and attributed with several health benefits, in humans is not fully understood. Likewise, the physiologically active principles of garlic have not been fully clarified to date. It is possible that not only the parent compounds present in garlic but also its metabolites are responsible for the specific physiological properties of garlic, including its influence on the characteristic body odor signature of humans after garlic consumption...
December 1, 2016: Metabolites
https://www.readbyqxmd.com/read/27905515/neonicotinoid-induced-impairment-of-odour-coding-in-the-honeybee
#17
Mara Andrione, Giorgio Vallortigara, Renzo Antolini, Albrecht Haase
Exposure to neonicotinoid pesticides is considered one of the possible causes of honeybee (Apis mellifera) population decline. At sublethal doses, these chemicals have been shown to negatively affect a number of behaviours, including performance of olfactory learning and memory, due to their interference with acetylcholine signalling in the mushroom bodies. Here we provide evidence that neonicotinoids can affect odour coding upstream of the mushroom bodies, in the first odour processing centres of the honeybee brain, i...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27884756/repeated-unpredictable-threats-without-harm-impair-spatial-working-memory-in-the-barnes-maze
#18
Diane J Kim, Nathan St Louis, Ralph A Molaro, Glenn T Hudson, Robert C Chorley, Brenda J Anderson
Psychological stressors elicit the anticipation of homeostatic challenge, whereas physical stressors are direct threats to homeostasis. Many rodent models of stress include both types of stressors, yet deficits, like those reported for working memory, are often attributed to psychological stress. To empirically test whether intermittent psychological stressors, such as repeated threats, are solely sufficient to impair spatial working memory, we developed a novel rodent model of stress that is restricted to the anticipation of threat, and free of direct physical challenge...
January 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/27871975/the-role-of-the-drosophila-lateral-horn-in-olfactory-information-processing-and-behavioral-response
#19
REVIEW
Janna N Schultzhaus, Sehresh Saleem, Hina Iftikhar, Ginger E Carney
Animals must rapidly and accurately process environmental information to produce the correct behavioral responses. Reactions to previously encountered as well as to novel but biologically important stimuli are equally important, and one understudied region in the insect brain plays a role in processing both types of stimuli. The lateral horn is a higher order processing center that mainly processes olfactory information and is linked via olfactory projection neurons to another higher order learning center, the mushroom body...
November 19, 2016: Journal of Insect Physiology
https://www.readbyqxmd.com/read/27859193/the-importance-of-motivation-weapons-and-foul-odors-in-driving-encounter-competition-in-carnivores
#20
Maximilian L Allen, Christopher C Wilmers, L Mark Elbroch, Julie M Golla, Heiko U Wittmer
Encounter competition is interference competition in which animals directly contend for resources. Ecological theory predicts the trait that determines the resource holding potential (RHP), and hence the winner of encounter competition, is most often body size or mass. The difficulties of observing encounter competition in complex organisms in natural environments, however, has limited opportunities to test this theory across diverse species. We studied the outcome of encounter competition contests among mesocarnivores at deer carcasses in California to determine the most important variables for winning these contests...
August 2016: Ecology
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