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https://www.readbyqxmd.com/read/28930263/salicylate-poisoning-potential-of-topical-pain-relief-agents-from-age-old-remedies-to-engineered-smart-patches
#1
REVIEW
Ashleigh Anderson, Aaron McConville, Laura Fanthorpe, James Davis
The pain relief capabilities of methyl salicylate are well established and a multitude of over-the-counter products populate pharmacy shelves. Over-application of the topical preparation containing the drug, or its accidental ingestion, invariably result in salicylate poisoning and in severe cases can be fatal. The drug has been a regular feature of the US National Poison Database Survey over the past decade and continues to pose a risk to children and adults alike. The aim of the review has been to cast a spotlight on the drug and assess why its use remains problematic, how technology could offer more efficacious delivery regimes, and minimise the possibility of accidental or intentional misuse...
June 30, 2017: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/28930108/terra-firma-forme-dermatosis-misdiagnosed-as-nevoid-acanthosis-nigricans
#2
Gulsen Tukenmez Demirci, Ayse Tulin Mansur, Ebru Demiralay
Terra firma-forme dermatosis (TFFD) is a clinical condition characterized by brown-gray, velvety, pigmented patches or plaques, resembling dirt on the skin. Nevoid acanthosis nigricans (NAN) is a rare and recently described form of acanthosis nigricans occurring during childhood or early adulthood. Herein we describe a patient with TFFD, initially misdiagnosed as NAN. The patient had developed hyperkeratotic and hyperpigmented plaques on and around the umbilicus during pregnancy. Though regular in bathing practices, she could not clear away the lesions and concerned marks for inesthetic appearance...
October 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28928839/analysis-of-resistance-associated-gene-expression-in-docetaxel-resistant-prostate-cancer-cells
#3
Sangchul Lee, Kwangtaek Kim, Jin-Nyoung Ho, Hyunjin Jin, Seok-Soo Byun, Eunsik Lee
Docetaxel-based chemotherapy is the standard treatment for metastatic castration-resistant prostate cancer (CRPC). However, a number of patients with metastatic CRPC are refractory to docetaxel or develop docetaxel resistance. The underlying molecular mechanisms of docetaxel resistance remain unclear, which is a significant burden to the management of metastatic prostate cancer. In the present study, the differential gene expression between docetaxel-sensitive (PC3) and docetaxel-resistant (PC3DR2) prostate cancer cells was identified using DNA microarrays, western blot analysis and reverse transcription-quantitative polymerase chain reaction...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28928636/smn-deficiency-increases-the-intrinsic-excitability-of-motoneurons
#4
Saravanan Arumugam, Ana Garcera, Rosa M Soler, Lucía Tabares
During development, motoneurons experience significant changes in their size and in the number and strength of connections that they receive, which requires adaptive changes in their passive and active electrical properties. Even after reaching maturity, motoneurons continue to adjust their intrinsic excitability and synaptic activity for proper functioning of the sensorimotor circuit in accordance with physiological demands. Likewise, if some elements of the circuit become dysfunctional, the system tries to compensate for the alterations to maintain appropriate function...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28928255/anisocoria-secondary-to-inadvertent-contact-with-scopolamine-patch
#5
Janki Shah, Alice Jiang, Zoltan Fekete
A unilaterally fixed mydriasis, also known as a 'blown pupil,' is considered an ominous sign concerning for intracranial pathology. Causes of anisocoria can range from benign to immediately life-threatening. When a patient presents with anisocoria, the concern for a fatal diagnosis leads the clinician to obtain numerous tests, many of which may be unnecessary. The authors present a case of a healthy woman in her 30s who presented with an acute unilateral mydriasis likely secondary to inadvertent contact with a scopolamine patch...
September 19, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28928046/new-directions-for-ambulatory-monitoring-following-2017-hrs-ishne-expert-consensus
#6
Emanuela T Locati
The main role of ambulatory electrocardiography (AECG) in clinical practice is to detect and characterize the behavior of cardiac electrical activity during ordinary daily life activities. Because certain rhythm abnormalities may be infrequent and paroxysmal, and may occur only during sleep or in association with mental, emotional, or exercise-induced perturbation in cardiac function, AECG needs to be recorded over a long period of time, originally lasting 24h and now expanding up to several weeks and even to months...
August 12, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28927958/defective-gabaergic-neurotransmission-in-the-nucleus-tractus-solitarius-in-mecp2-null-mice-a-model-of-rett-syndrome
#7
Chao-Yin Chen, Jacopo Di Lucente, Yen-Chu Lin, Cheng-Chang Lien, Michael A Rogawski, Izumi Maezawa, Lee-Way Jin
Rett syndrome (RTT) is a devastating neurodevelopmental disorder caused by loss-of-function mutations in the X-linked methyl-CpG binding protein 2 (Mecp2) gene. GABAergic dysfunction has been implicated contributing to the respiratory dysfunction, one major clinical feature of RTT. The nucleus tractus solitarius (NTS) is the first central site integrating respiratory sensory information that can change the nature of the reflex output. We hypothesized that deficiency in Mecp2 gene reduces GABAergic neurotransmission in the NTS...
September 16, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28927449/beyond-classic-dermoscopic-patterns-of-dermatofibromas-a-prospective-research-study
#8
Awatef Kelati, Nima Aqil, Hanane Baybay, Salim Gallouj, Fatima Zahra Mernissi
BACKGROUND: The usual stereotypical dermoscopic pattern associated with dermatofibromas is a pigment network and central white patch. However, this pattern may be difficult to diagnose in some variant cases. We aimed to describe dermoscopic patterns of dermatofibroma according to its histopathological subtypes, with special emphasis on new and rare dermoscopic features. METHODS: This prospective study, which was conducted between September 2015 and May 2016 in the Department of Dermatology, University Hospital Hassan II, Fez, Morocco, included 100 cases of dermatofibroma confirmed on clinical and histological grounds...
September 20, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28926642/a-late-holocene-pollen-record-from-proglacial-oblong-tarn-mount-kenya
#9
Colin J Courtney Mustaphi, Konrad Gajewski, Rob Marchant, Gunhild Rosqvist
High-elevation ecosystems, such as those on Mount Kenya are undergoing significant changes, with accelerated glacial ice losses over the twentieth century creating new space for alpine plants to establish. These ecosystems respond rapidly to climatic variability and within decades of glacial retreat, Afroalpine pioneering taxa stabilize barren land and facilitate soil development, promoting complex patches of alpine vegetation. Periglacial lake sediment records can be used to examine centennial and millennial scale variations in alpine and montane vegetation compositions...
2017: PloS One
https://www.readbyqxmd.com/read/28926472/differential-sensitivity-of-presynaptic-and-postsynaptic-gabab-receptors-in-rat-ventrolateral-periaqueductal-gray
#10
Qian Chen, Caifeng Shao, Hui Zhou, Rui Ma, Ping Jiang, Kun Yang
The ventrolateral periaqueductal gray (PAG) in the midbrain plays a key role in the descending pain modulatory system. γ-Aminobutyric acid type B (GABAB) receptors belong to a metabotropic receptor subfamily and mediate both presynaptic and postsynaptic effects in PAG. It has been well documented that activation of GABAB receptors yields analgesia in some PAG subdivisions. In the present study, employing whole-cell patch-clamp recordings on acute rat PAG slices, we simultaneously monitored the responses of presynaptic and postsynaptic GABAB receptors...
September 18, 2017: Neuroreport
https://www.readbyqxmd.com/read/28925637/hair-loss-common-causes-and-treatment
#11
T Grant Phillips, W Paul Slomiany, Robert Allison
Hair loss is often distressing and can have a significant effect on the patient's quality of life. Patients may present to their family physician first with diffuse or patchy hair loss. Scarring alopecia is best evaluated by a dermatologist. Nonscarring alopecias can be readily diagnosed and treated in the family physician's office. Androgenetic alopecia can be diagnosed clinically and treated with minoxidil. Alopecia areata is diagnosed by typical patches of hair loss and is self-limited. Tinea capitis causes patches of alopecia that may be erythematous and scaly and must be treated systemically...
September 15, 2017: American Family Physician
https://www.readbyqxmd.com/read/28925012/a-new-negative-allosteric-modulator-ap14145-for-the-study-of-small-conductance-calcium-activated-potassium-channels
#12
Rafel Simó-Vicens, Jeppe E Kirchhoff, Bernardo Dolce, Lea Abildgaard Jensen, Tobias Speerschneider, Ulrik S Sørensen, Morten Grunnet, Jonas G Diness, Bo H Bentzen
BACKGROUND AND PURPOSE: Small conductance Ca(2+) -activated K(+) (KCa 2) channels represent a promising atrial-selective target for treatment of atrial fibrillation (AF). Here, we establish the mechanism of KCa 2 inhibition by the new compound AP14145. EXPERIMENTAL APPROACH: Using site directed mutagenesis binding determinants for AP14145 inhibition were explored. AP14145 selectivity and mechanism of action were investigated by patch clamp recordings of heterologously expressed KCa 2 channels...
September 19, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28924498/habitat-suitability-density-relationship-in-an-endangered-woodland-species-the-case-of-the-blue-chaffinch-fringilla-polatzeki
#13
Luis M Carrascal, Ángel C Moreno, Alejandro Delgado, Víctor Suárez, Domingo Trujillo
BACKGROUND: Understanding constraints to the distribution of threatened species may help to ascertain whether there are other suitable sectors for reducing the risks associated with species that are recorded in only one protected locality, and to inform about the suitability of other areas for reintroduction or translocation programs. METHODS: We studied the Gran Canaria blue chaffinch (Fringilla polatzeki), a habitat specialist endemic of the Canary Islands restricted to the pine forest of Inagua, the only area where the species has been naturally present as a regular breeder in the last 25 years...
2017: PeerJ
https://www.readbyqxmd.com/read/28924467/how-to-avoid-injury-to-the-renal-artery-due-to-inclusion-of-superior-mesenteric-artery-patch-during-organ-procurement
#14
B V Dasari, S Asthana, N Ahmad
No abstract text is available yet for this article.
2017: International Journal of Organ Transplantation Medicine
https://www.readbyqxmd.com/read/28924439/corneal-neovascularization-with-associated-lipid-keratopathy-in-a-patient-with-obstructive-sleep-apnea-hypopnea-syndrome-using-a-continuous-positive-airway-pressure-machine
#15
Konstantinos Oikonomakis, Myrsini Petrelli, Konstantinos Andreanos, Andreas Mouchtouris, Petros Petrou, Ilias Georgalas, Dimitrios Papaconstantinou, George Kymionis
OBJECTIVE: To report a case of corneal neovascularization with secondary lipid keratopathy in a patient treated with continuous positive airway pressure (CPAP) for obstructive sleep apnea-hypopnea syndrome (OSAHS). CASE REPORT: A 49-year-old male had been diagnosed with obstructive sleep apnea syndrome 10 years ago and has been treated with the application of a CPAP machine during night sleep ever since. For the past year, the patient had been complaining for ocular irritation and excessive tearing of the left eye on awakening...
May 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28924206/ephrin-a2-regulates-excitatory-neuron-differentiation-and-interneuron-migration-in-the-developing-neocortex
#16
Jihane Homman-Ludiye, William C Kwan, Mitchell J de Souza, Jennifer Rodger, James A Bourne
The development of the neocortex requires co-ordination between proliferation and differentiation, as well as the precise orchestration of neuronal migration. Eph/ephrin signaling is crucial in guiding neurons and their projections during embryonic development. In adult ephrin-A2 knockout mice we consistently observed focal patches of disorganized neocortical laminar architecture, ranging in severity from reduced neuronal density to a complete lack of neurons. Loss of ephrin-A2 in the pre-optic area of the diencephalon reduced the migration of neocortex-bound interneurons from this region...
September 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28924048/a-mutant-of-the-bmk-antitumor-analgesic-peptide-exhibits-reduced-inhibition-to-hnav1-4-and-hnav1-5-channels-while-retaining-analgesic-activity
#17
Yijia Xu, Xiangxue Meng, Xue Hou, Jianfang Sun, Xiaohua Kong, Yuqi Sun, Zeyu Liu, Yuanyuan Ma, Ye Niu, Yongbo Song, Yong Cui, Mingyi Zhao, Jinghai Zhang
Scorpion toxins can kill other animals by inducing paralysis and arrhythmia, which limits the potential applications of these agents in the clinical management of diseases. Antitumor-analgesic peptide (AGAP), purified from Buthus martensii Karsch (BmK), has been proved to possess analgesic and antitumor activities. Trp38, a conserved aromatic residue of AGAP, might play an important role in mediating AGAP activities according to the sequence and homology modeling analyses. Therefore, an AGAP mutant W38G was generated, and effects of both AGAP and the mutant W38G were examine by whole-cell patch clamp techniques on the sodium channels hNav1...
September 18, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28923947/tpc2-polymorphisms-associated-with-a-hair-pigmentation-phenotype-in-humans-result-in-gain-of-channel-function-by-independent-mechanisms
#18
Yu-Kai Chao, Verena Schludi, Cheng-Chang Chen, Elisabeth Butz, O N Phuong Nguyen, Martin Müller, Jens Krüger, Claudia Kammerbauer, Manu Ben-Johny, Angelika M Vollmar, Carola Berking, Martin Biel, Christian A Wahl-Schott, Christian Grimm
Two-pore channels (TPCs) are endolysosomal cation channels. Two members exist in humans, TPC1 and TPC2. Functional roles associated with the ubiquitously expressed TPCs include VEGF-induced neoangiogenesis, LDL-cholesterol trafficking and degradation, physical endurance under fasting conditions, autophagy regulation, the acrosome reaction in sperm, cancer cell migration, and intracellular trafficking of pathogens such as Ebola virus or bacterial toxins (e.g., cholera toxin). In a genome-wide association study for variants associated with human pigmentation characteristics two coding variants of TPC2, rs35264875 (encoding M484L) and rs3829241 (encoding G734E), have been found to be associated with a shift from brown to blond hair color...
September 18, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28923635/living-donor-liver-transplantation-for-budd-chiari-syndrome-case%C3%A2-series
#19
C Karaca, C Yilmaz, R Ferecov, Z Iakobadze, K Kilic, L Caglayan, S Aydogdu, M Kilic
BACKGROUND: Venous reconstruction in living-donor liver transplantation for Budd-Chiari syndrome (BCS) has challenges because the grafts from living donors lack vena cava, and hepatic venous anastomosis must be performed on an already-thrombosed and/or stenosed inferior vena cava. Several techniques are described to overcome this problem, and we represent our experience with 22 patients. METHODS: Medical recordings of 22 patients were retrospectively collected, and disease-specific data as well as recordings about surgical technique were analyzed...
October 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28922933/a-case-of-a-paediatric-patient-with-allergic-contact-dermatitis-to-benzoyl-peroxide
#20
Matthew Sandre, Sandra Skotnicki-Grant
Allergic contact dermatitis to benzoyl peroxide can occur in up to 6.5% of those with a history of exposure to this potential allergen. Conversely, irritant contact dermatitis is very common with benzoyl peroxide and can be differentiated from allergic contact dermatitis based on the patient's history and clinical signs and symptoms. We present a case of a paediatric patient with patch test-confirmed severe allergic contact dermatitis to benzoyl peroxide requiring hospitalisation and systemic treatment.
September 1, 2017: Journal of Cutaneous Medicine and Surgery
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