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https://www.readbyqxmd.com/read/28543731/neuroimaging-biomarkers-and-impaired-olfaction-in-cognitively-normal-individuals
#1
Maria Vassilaki, Teresa J Christianson, Michelle M Mielke, Yonas E Geda, Walter K Kremers, Mary M Machulda, David S Knopman, Ronald C Petersen, Val J Lowe, Clifford R Jack, Rosebud O Roberts
OBJECTIVE: There is a need for inexpensive non-invasive tests to identify older healthy persons at risk for Alzheimer's disease (AD) for enrollment in AD prevention trials. Our objective was to examine whether abnormalities in neuroimaging measures of amyloid and neurodegeneration are correlated with odor identification (OI) in the population-based Mayo Clinic Study of Aging (MCSA). METHODS: Cognitively normal (CN) participants had olfactory function assessed using the Brief Smell Identification Test (B-SIT), underwent magnetic resonance imaging (MRI; n=829) to assess a composite Alzheimer's disease (AD) signature cortical thickness and hippocampal volume (HVa), and, (11) C-Pittsburgh compound B ((11) C-PiB; n=306) and (18) fluorodeoxyglucose ((18) F-FDG; n=305) positron emission tomography (PET) scanning to assess amyloid accumulation and brain hypometabolism, respectively...
May 22, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28542788/saturated-salt-solution-a-further-step-to-a-formaldehyde-free-embalming-method-for-veterinary-gross-anatomy
#2
M Lombardero, M M Yllera, A Costa-E-Silva, M J Oliveira, P G Ferreira
In the field of veterinary anatomy, most of the specimens used in practical sessions are perfused with fixatives. Thus, they can be used for a longer time, reducing the number of animals for educational purposes. Formalin is the most commonly used fixative, consisting of a 37% formaldehyde solution. However, formaldehyde is a powerful irritant of the eyes and airways and is considered carcinogenic, causing nasopharyngeal cancer in exposed workers and professionals. In the present study, we explored an alternative method to avoid the use of formaldehyde in specimens used for gross anatomy practical sessions...
May 24, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28542639/rodents-and-humans-are-able-to-detect-the-odour-of-l-lactate
#3
Valentina Mosienko, Andy J Chang, Natalia Alenina, Anja G Teschemacher, Sergey Kasparov
L-Lactate (LL) is an essential cellular metabolite which can be used to generate energy. In addition, accumulating evidence suggests that LL is used for inter-cellular signalling. Some LL-sensitive receptors have been identified but we recently proposed that there may be yet another unknown G-protein coupled receptor (GPCR) sensitive to LL in the brain. Olfactory receptors (ORs) represent the largest family of GPCRs and some of them are expressed outside the olfactory system, including brain, making them interesting candidates for non-olfactory LL signalling...
2017: PloS One
https://www.readbyqxmd.com/read/28538877/effects-of-isotretinoin-on-the-olfactory-function-in-patients-with-acne
#4
Demet Kartal, Mehmet Yaşar, Levent Kartal, Ibrahim Özcan, Murat Borlu
Background: Isotretinoin is a synthetic analog of vitamin A. Recent studies support a role for retinoic acid in the recovery of olfactory function following injury in mice. Objective: This study aimed at determining the effect of isotretinoin on olfactory function in patients who have acne and are otherwise healthy. Methods: Forty-five patients (aged 25-40 years) with acne were included in the study. All patients underwent a rhinological examination...
March 2017: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28538741/hidradenitis-suppurativa-introduction
#5
Haley B Naik
Hidradenitis suppurativa (HS) is a prevalent and devastating inflammatory skin disease predominating in women and minorities. HS is characterized by painful recurrent abscesses, foul-smelling purulent drainage, sinus tract and fistula formation, and disfiguring scarring involving intertriginous body sites including the axillae, breasts, groin, and buttocks. Disease onset typically occurs in the second to fourth decades of life and is associated with significant impacts on physical and psychological well-being due to pain, shame, and isolation, leading to profound suffering and despair...
June 2017: Seminars in Cutaneous Medicine and Surgery
https://www.readbyqxmd.com/read/28538577/in-depth-review-of-symptoms-triggers-and-treatment-of-occipital-migraine-headaches-site-iv
#6
Mona Ascha, David E Kurlander, Abdus Sattar, James Gatherwright, Bahman Guyuron
BACKGROUND: This study reports the surgical technique and efficacy of deactivation of occipital-triggered migraine headaches. In addition, it reports the effect of surgical deactivation of occipital-triggered migraine headaches on migraine triggers and associated symptoms other than pain. METHODS: One hundred ninety-five patients undergoing surgery for occipital-triggered migraine headaches performed by a single surgeon, and followed for at least 1 year, were analyzed...
June 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28537337/relationship-between-sensory-perception-and-frailty-in-a-community-dwelling-elderly-population
#7
S Somekawa, T Mine, K Ono, N Hayashi, S Obuchi, H Yoshida, H Kawai, Y Fujiwara, H Hirano, M Kojima, K Ihara, H Kim
BACKGROUND: Aging anorexia, defined as loss of appetite and/or reduced food intake, has been postulated as a risk factor for frailty. Impairments of taste and smell perception in elderly people can lead to reduced enjoyment of food and contribute to the anorexia of aging. OBJECTIVE: To evaluate the relationship between frailty and taste and smell perception in elderly people living in urban areas. DESIGN: Data from the baseline evaluation of 768 residents aged ≥ 65 years who enrolled in a comprehensive geriatric health examination survey was analyzed...
2017: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/28536537/-gestaltomics-systems-biology-schemes-for-the-study-of-neuropsychiatric-diseases
#8
REVIEW
Nora A Gutierrez Najera, Osbaldo Resendis-Antonio, Humberto Nicolini
The integration of different sources of biological information about what defines a behavioral phenotype is difficult to unify in an entity that reflects the arithmetic sum of its individual parts. In this sense, the challenge of Systems Biology for understanding the "psychiatric phenotype" is to provide an improved vision of the shape of the phenotype as it is visualized by "Gestalt" psychology, whose fundamental axiom is that the observed phenotype (behavior or mental disorder) will be the result of the integrative composition of every part...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28534048/the-first-report-of-cadasil-in-peru-olfactory-dysfunction-on-initial-presentation
#9
Anastasia Vishnevetsky, Miguel Inca-Martinez, Karina Milla-Neyra, Danny Moises Barrientos-Iman, Ivan Cornejo-Herrera, Carlos Cosentino, Mario Cornejo-Olivas
Cerebral autosomal dominant arteriopathy with subcortical infarcts and leucoencephalopathy (CADASIL) is a rare, heritable, small vessel vascular disease caused by mutations in the Notch3 gene that is characterized by migraines, subcortical vascular events, cognitive decline, and mood disturbances. However, many CADASIL cases present with unusual symptoms such as status epilepticus, a movement disorder, or sensory dysfunction. This study describes the clinical, genetic, and radiologic characteristics of a Peruvian family with CADASIL in which multiple family members presented with severe olfactory deficits...
December 2016: ENeurologicalSci
https://www.readbyqxmd.com/read/28532653/hippocampal-ca1-local-field-potential-oscillations-induced-by-olfactory-cue-of-liked-food
#10
Nifareeda Samerphob, Dania Cheaha, Surapong Chatpun, Ekkasit Kumarnsit
Eating motivation is induced not only by negative energy balance but also food related cues. However, neural processing for acquisition of learned food preference remains to be established. This study aimed to identify hippocampal neural signaling in response to olfactory cue (chocolate scent) after completion of repetitive chocolate sessions. Male Swiss albino mice implanted with intracranial electrode into the hippocampus were used for local field potential (LFP) recording. Animals were given chocolate sessions (a piece of 2 g chocolate per each mouse to eat on day 1, 3, 5 and 7)...
May 19, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/28531300/anosmia-a-clinical-review
#11
Sanne Boesveldt, Elbrich M Postma, Duncan Boak, Antje Welge-Luessen, Veronika Schöpf, Joel D Mainland, Jeffrey Martens, John Ngai, Valerie B Duffy
Anosmia and hyposmia, the inability or decreased ability to smell, is estimated to afflict 3-20% of the population. Risk of olfactory dysfunction increases with old age and may also result from chronic sinonasal diseases, severe head trauma, and upper respiratory infections, or neurodegenerative diseases. These disorders impair the ability to sense warning odors in foods and the environment, as well as hinder the quality of life related to social interactions, eating, and feelings of well-being. This article reports and extends on a clinical update commencing at the 2016 Association for Chemoreception Sciences annual meeting...
May 22, 2017: Chemical Senses
https://www.readbyqxmd.com/read/28530322/-oro-dento-facial-manifestations-in-patients-with-familial-dysautonomia
#12
REVIEW
Eliyahu Mass
The oro-dento-facial features and dysfunctions of children with hereditary sensory and autonomic neuropathy type III (HSAN III), known as familial dysautonomia (FD) or Riley-Day syndrome, were first described in the scientific literature in 1949. They include: dental trauma, dental and soft tissue selfmutilation, normal dental age, normal sequence and timing of eruption and exfoliation of teeth, smaller tooth size, different and disproportional tooth components, normal alveolar bone height, small jaws, mild crowding and malocclusion...
August 2016: Harefuah
https://www.readbyqxmd.com/read/28525709/sensory-and-behavioral-responses-of-a-model-fish-to-oil-sands-process-affected-water-with-and-without-treatment
#13
Megan Reichert, Brian Blunt, Tia Gabruch, Tanja Zerulla, Allison Ralph, Mohamed Gamal El-Din, Bruce R Sutherland, Keith Tierney
If oil sands process-affected water (OSPW) is to be returned to the environment, a desire is that it not adversely affect aquatic life. We investigated whether a relevant model fish (rainbow trout; Oncorhynchus mykiss) could detect OSPW using its olfactory sense (smell), and whether exposure to it would result in behavioural changes. We also investigated whether ozonation of OSPW, which lowers the concentration of organic compounds attributed with toxicity (naphthenic acids), would ameliorate any observed adverse effects...
May 19, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28522171/brain-correlates-of-progressive-olfactory-loss-in-parkinson-s-disease
#14
Anna Campabadal, Carme Uribe, Barbara Segura, Hugo C Baggio, Alexandra Abos, Anna Isabel Garcia-Diaz, Maria Jose Marti, Francesc Valldeoriola, Yaroslau Compta, Nuria Bargallo, Carme Junque
BACKGROUND: Olfactory dysfunction is present in a large proportion of patients with Parkinson's disease (PD) upon diagnosis. However, its progression over time has been poorly investigated. The few available longitudinal studies lack control groups or MRI data. OBJECTIVE: To investigate the olfactory changes and their structural correlates in non-demented PD over a four-year follow-up. METHODS: We assessed olfactory function in a sample of 25 PD patients and 24 normal controls of similar age using the University of Pennsylvania Smell Identification test (UPSIT)...
May 10, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28516824/opinion-paper-smell-an-affordable-way-to-improve-livestock-welfare
#15
R Salesse
No abstract text is available yet for this article.
May 18, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28513522/comparison-between-olfactory-function-of-pregnant-women-and-non-pregnant-women-in-reproductive-age-group-in-ibadan-nigeria
#16
U Nwankwo, A J Fasunla, A Oladokun, O G Nwaorgu
BACKGROUND: Pregnant women require normal olfactory function in order to develop good appetite for healthy living and normal fetal development. This study was carried out to investigate and compare olfactory function of pregnant women with non-pregnant women. METHODS: This was a case control study of women in reproductive age group at the University College Hospital, Ibadan, Nigeria from July 2014 to February 2015. Consecutive 70 pregnant women and 70 non-pregnant women (controls) without rhinologic symptoms were studied...
May 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28512302/olfactory-threshold-and-odor-discrimination-ability-in-children-evaluation-of-a-modified-sniffin-sticks-test
#17
Janine Gellrich, Carolin Stetzler, Anna Oleszkiewicz, Thomas Hummel, Valentin A Schriever
The clinical diagnostics of olfactory dysfunction in children turns out to be challenging due to low attention span, insufficient linguistic development and lack of odor experiences. Several smell tests have been developed for adults. Most of these examinations take a relatively long time and require a high level of concentration. Therefore, the aim of the current study was to evaluate an odor discrimination and olfactory threshold test using the frequently used "Sniffin' Sticks" in children and adolescents in a simplified two-alternative-forced-choice version (2AFC) and compare it to the original three-alternative-forced-choice test (3AFC)...
May 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28511547/smell-and-taste-impairment-after-total-laryngectomy
#18
Giuseppe Riva, Matteo Sensini, Andrea Corvino, Giancarlo Pecorari, Massimiliano Garzaro
OBJECTIVE: Aim of this observational study is the evaluation of olfactory and gustatory impairments in laryngectomized long-term survivors compared to control subjects. Correlation between smell and taste alterations, age, and previous adjuvant treatments in laryngectomees was investigated. METHODS: Fifty control subjects and 50 patients who underwent total laryngectomy for advanced laryngeal carcinoma were evaluated. All subjects underwent symptoms evaluation, oropharyngeal exam, endoscopic fiberoptic nasal examination, and Taste Strips and Sniffin' Sticks tests...
May 1, 2017: Annals of Otology, Rhinology, and Laryngology
https://www.readbyqxmd.com/read/28509510/editorial-selling-a-sugar-tax-the-sweet-smell-of-success
#19
Ffion Lloyd-Williams, Simon Capewell
This editorial briefly considers the increasing epidemic of obesity and Type 2 diabetes, the underlying drivers of junk food and sugary drinks, and the recent scientific and campaigning movements culminating in the UK Chancellor's surprise announcement of a Sugary Drinks Levy.
September 2016: Community Dental Health
https://www.readbyqxmd.com/read/28508275/gross-olfaction-before-and-after-laparoscopic-gastric-bypass
#20
Carlos Zerrweck, Vannia Castañeda Gallardo, Carmen Calleja, Elisa Sepúlveda, Lizbeth Guilber
BACKGROUND: Obesity leads to olfaction alterations, and this can further impact food choices, appetite, and nutritional status. Bariatric procedures induce weight loss and change in taste and smell perception, but more information is needed, especially using objective olfaction tests. METHODS: A prospective study was conducted during 6 months, with candidates to laparoscopic gastric bypass at a single institution. A preoperative nasofibroscopy and gross smell identification test (The Pocket Smell Test ®) were performed in those meeting the inclusion criteria...
May 15, 2017: Obesity Surgery
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