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https://www.readbyqxmd.com/read/29352174/mechanical-phenotyping-of-k562-cells-by-the-micropipette-aspiration-technique-allows-identifying-mechanical-changes-induced-by-drugs
#1
Alessandro Di Cerbo, Valentina Rubino, Francesca Morelli, Giuseppina Ruggiero, Rosaria Landi, Gianandrea Guidetti, Sergio Canello, Giuseppe Terrazzano, Andrea Alessandrini
Mechanical properties of living cells can be used as reliable markers of their state, such as the presence of a pathological state or their differentiation phase. The mechanical behavior of cells depends on the organization of their cytoskeletal network and the main contribution typically comes from the actomyosin contractile system, in both suspended and adherent cells. In the present study, we investigated the effect of a pharmaceutical formulation (OTC - Ossitetraciclina liquida 20%) used as antibiotic, on the mechanical properties of K562 cells by using the Micropipette Aspiration Technique (MAT)...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29350119/-medication-overuse-headache
#2
J A Pijpers, N J Wiendels, H Koppen, M D Ferrari, J Haan, G M Terwindt
- Medication-overuse headache is a highly prevalent disorder with a major impact on the quality of life.- Medication-overuse headache is defined as headache on ≥ 15 days per month with overuse of acute headache medication for ≥ 3 months. We talk about overuse in case of intake of simple analgesics on ≥ 15 days per month or triptans or combinations of analgesics on ≥ 10 days per month.- The underlying type of headache is usually migraine or tension-type headache.- One of the possible underlying mechanisms of medication-overuse headache is changed sensitivity as a consequence of central sensitisation...
2018: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/29349847/increased-pain-sensitivity-in-migraine-and-tension-type-headache-coexistent-with-low-back-pain-a-cross-sectional-population-study
#3
S Ashina, R B Lipton, L Bendtsen, N Hajiyeva, D C Buse, A C Lyngberg, R Jensen
BACKGROUND: Low back pain is common in the general population and in individuals with primary headaches. We assessed the relative frequency of self-reported back pain in persons with and without primary headaches and examined pain sensitivity. METHOD: A population of 796 individuals completed a headache interview based on ICHD criteria and provided data of interest in a self-administered questionnaire. Headache cases were classified into chronic (≥15) (CH) or episodic (<15 headache days/month) (EH)...
January 19, 2018: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/29349766/constant-existence-of-the-sensory-branch-of-the-nerve-to-the-pyramidalis-distributing-to-the-upper-margin-of-the-pubic-ramus
#4
Daijiro Haba, Kenji Emura, Yuko Watanabe, Ikuo Kageyama, Satoshi Kikkawa, Mamoru Uemura, Takamitsu Arakawa
Twenty-one sides of 11 adult Japanese cadavers were investigated, and 2 of 21 sides exhibited absence of the pyramidalis. We observed that all of the nerves to the pyramidalis included the sensory nerve branch, which distributed to the aponeurotic tissue in the upper area of the pubic ramus. To investigate the clinical relevance and developmental process of the pyramidalis, detailed innervation patterns of the pyramidalis and the lumber plexus were examined and compared with the case of absent pyramidalis. The nerves to the pyramidalis could be classified into five types by the derivative nerves and two subtypes by their courses associated with the funiculus spermaticus...
January 18, 2018: Anatomical Science International
https://www.readbyqxmd.com/read/29347181/relationship-between-the-size-of-a-camphor-driven-rotor-and-its-angular-velocity
#5
Yuki Koyano, Marian Gryciuk, Paulina Skrobanska, Maciej Malecki, Yutaka Sumino, Hiroyuki Kitahata, Jerzy Gorecki
We consider a rotor made of two camphor disks glued below the ends of a plastic stripe. The disks are floating on a water surface and the plastic stripe does not touch the surface. The system can rotate around a vertical axis located at the center of the stripe. The disks dissipate camphor molecules. The driving momentum comes from the nonuniformity of surface tension resulting from inhomogeneous surface concentration of camphor molecules around the disks. We investigate the stationary angular velocity as a function of rotor radius ℓ...
July 2017: Physical Review. E
https://www.readbyqxmd.com/read/29347141/columnar-disorder-phase-boundary-in-a-mixture-of-hard-squares-and-dimers
#6
Dipanjan Mandal, R Rajesh
A mixture of hard squares, dimers, and vacancies on a square lattice is known to undergo a transition from a low-density disordered phase to a high-density columnar ordered phase. Along the fully packed square-dimer line, the system undergoes a Kosterliz-Thouless-type transition to a phase with power law correlations. We estimate the phase boundary separating the ordered and disordered phases by calculating the interfacial tension between two differently ordered phases within two different approximation schemes...
July 2017: Physical Review. E
https://www.readbyqxmd.com/read/29346900/smoothed-particle-hydrodynamics-study-of-the-roughness-effect-on-contact-angle-and-droplet-flow
#7
Elena Shigorina, Jannes Kordilla, Alexandre M Tartakovsky
We employ a pairwise force smoothed particle hydrodynamics (PF-SPH) model to simulate sessile and transient droplets on rough hydrophobic and hydrophilic surfaces. PF-SPH allows modeling of free-surface flows without discretizing the air phase, which is achieved by imposing the surface tension and dynamic contact angles with pairwise interaction forces. We use the PF-SPH model to study the effect of surface roughness and microscopic contact angle on the effective contact angle and droplet dynamics. In the first part of this work, we investigate static contact angles of sessile droplets on different types of rough surfaces...
September 2017: Physical Review. E
https://www.readbyqxmd.com/read/29344659/degree-of-endplate-chondrocyte-degeneration-in-different-tension-regions-during-mechanical-stimulation
#8
Yongming Xu, Shujuan Xu, Zhi Gao, Liang Xiao, Fei Xiao, Hongguang Xu, Xiaoling Zhang
The aim of this study was to explore the degree of degeneration of endplate chondrocytes in different tension regions induced by intermittent cyclic mechanical tension (ICMT) in vitro. Rat endplate chondrocytes were harvested and treated with 10% ICMT for 8 h/day with a frequency of 0.5 Hz. A cartilage degeneration model was induced using an FX‑5000T cell strain‑loading system. The experiment was divided into the central region and the peripheral region, according to the contact area between the loading post and the six‑well flexible silicone rubber BioFlex plates...
January 16, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29342023/physiatry-reviews-for-evidence-in-practice-second-order-peer-review-does-massage-therapy-have-value-in-the-treatment-for-tension-type-headache
#9
Lynn N Gerber, Dinesh Kumbhare
No abstract text is available yet for this article.
February 2018: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/29340791/treatment-of-disabling-headache-with-greater-occipital-nerve-injections-in-a-large-population-of-childhood-and-adolescent-patients-a-service-evaluation
#10
Francesca Puledda, Peter J Goadsby, Prab Prabhakar
BACKGROUND: Pediatric headache disorders can be extremely disabling, with marked reduction in the quality of life of children and their carers. Evidenced-based options for the treatment of primary headache disorders with preventive medication is limited and clinical outcomes are often unsatisfactory. Greater occipital nerve injections represent a rapid and well-tolerated therapeutic option, which is widely used in clinical practice in adults, and has previously shown a good outcome in a pediatric population...
January 16, 2018: Journal of Headache and Pain
https://www.readbyqxmd.com/read/29340775/global-versus-local-mechanisms-of-temperature-sensing-in-ion-channels
#11
REVIEW
Cristina Arrigoni, Daniel L Minor
Ion channels turn diverse types of inputs, ranging from neurotransmitters to physical forces, into electrical signals. Channel responses to ligands generally rely on binding to discrete sensor domains that are coupled to the portion of the channel responsible for ion permeation. By contrast, sensing physical cues such as voltage, pressure, and temperature arises from more varied mechanisms. Voltage is commonly sensed by a local, domain-based strategy, whereas the predominant paradigm for pressure sensing employs a global response in channel structure to membrane tension changes...
January 17, 2018: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/29335889/comparison-of-gray-matter-volume-between-migraine-and-strict-criteria-tension-type-headache
#12
Wei-Ta Chen, Kun-Hsien Chou, Pei-Lin Lee, Fu-Jung Hsiao, David M Niddam, Kuan-Lin Lai, Jong-Ling Fuh, Ching-Po Lin, Shuu-Jiun Wang
BACKGROUND: Despite evidently distinct symptoms, tension-type headache (TTH) and migraine are highly comorbid and exhibit many similarities in clinical practice. The purpose of this study was to investigate whether both types of headaches are similar in brain morphology. METHODS: Consecutive patients with TTH and age- and sex-matched patients with migraine and healthy controls were enrolled for brain magnetic resonance imaging examination. Patients with TTH were excluded if they reported any headache features or associated symptoms of migraine...
January 15, 2018: Journal of Headache and Pain
https://www.readbyqxmd.com/read/29333870/the-effects-of-aerobic-exercise-for-persons-with-migraine-and-co-existing-tension-type-headache-and-neck-pain-a-randomized-controlled-clinical-trial
#13
Lotte Skytte Krøll, Catharina Sjödahl Hammarlund, Mattias Linde, Gunvor Gard, Rigmor Højland Jensen
Aim To evaluate aerobic exercise in migraine and co-existing tension-type headache and neck pain. Methods Consecutively recruited persons with migraine and co-existing tension-type headache and neck pain were randomized into an exercise group or control group. Aerobic exercise consisted of bike/cross-trainer/brisk walking for 45 minutes, three times/week. Controls continued usual daily activities. Pain frequency, intensity, and duration; physical fitness, level of physical activity, well-being and ability to engage in daily activities were assessed at baseline, after treatment and at follow-up...
January 1, 2018: Cephalalgia: An International Journal of Headache
https://www.readbyqxmd.com/read/29330811/a-nationwide-survey-of-factors-influencing-adherence-to-ocular-hypotensive-eyedrops-in-japan
#14
Toyoaki Tsumura, Kenji Kashiwagi, Yasuyuki Suzuki, Keiji Yoshikawa, Hirotaka Suzumura, Toshine Maeda, Ryuji Takeda, Hitomi Saito, Makoto Araie
INTRODUCTION: Few reports have investigated the status of adherence in Japan on a large scale. We aimed to investigate the status of adherence to topical glaucoma treatment and its associated factors. METHODS: A nationwide survey was conducted as a prospective fashion. Participants in this survey were subjects with primary open-angle glaucoma, normal-tension glaucoma, or ocular hypertension or pseudoexfoliation glaucoma who had been prescribed anti-glaucoma ophthalmic eyedrops and whose ophthalmologist considered prescribing any fixed combination of ocular hypotensive eyedrops for the first time between 2011 and 2012...
January 12, 2018: International Ophthalmology
https://www.readbyqxmd.com/read/29329031/development-of-a-new-ex-vivo-model-for-evaluation-of-endoscopic-submucosal-injection-materials-performance
#15
Ryohei Hirose, Takaaki Nakaya, Yuji Naito, Tomo Daidoji, Hiroaki Yasuda, Hideyuki Konishi, Yoshito Itoh
BACKGROUND AND AIMS: Development of high-performance submucosal injection materials (SIMs) contribute to the advancement of endoscopic therapy for early-stage gastrointestinal neoplasms. This study aimed to develop a new ex vivo model that mimics the human gastrointestinal tract to evaluate the performance (the height and duration of the submucosal elevation) of various SIMs in detail. METHODS: A new ex vivo model that applies a constant tension to the tested specimen (the porcine gastric specimen) was developed...
January 5, 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29328383/oxymatrine-protects-against-the-effects-of-cardiopulmonary-resuscitation-via-modulation-of-the-tgf-%C3%AE-1-smad3-signaling-pathway
#16
Dawei Wang, Xiao Qian Lou, Xiao-Ming Jiang, Chenxi Yang, Xiao-Liang Liu, Nan Zhang
Previous studies have demonstrated that oxymatrine may inhibit ventricular remodeling and serves an important role in the treatment of cardiovascular disease. The present study investigated whether oxymatrine treatment protects against the effects of cardiopulmonary resuscitation (CPR) via regulation of the transforming growth factor‑β1 (TGF‑β1)/mothers against decapentaplegic (Smad) signaling pathway. A CPR model was established in Sprague‑Dawley (SD) rats by asphyxiation, and rats were subsequently anaesthetized by intraperitoneal injection of chloral hydrate...
January 4, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29327224/prevalence-and-clinical-characteristics-of-headache-in-juvenile-myoclonic-epilepsy-experience-from-a-tertiary-epilepsy-center
#17
Metin Dedei Daryan, Betül Tekin Güveli, Sezin Alpaydın Baslo, Kasım Mulhan, Hüseyin Sarı, Zeynep Ezgi Balçık, Dilek Ataklı
The comorbidity of headache and epilepsy is often seen in neurological practice. The objective of this study was to assess the prevalence, types of, and risk factors for headache in juvenile myoclonic epilepsy (JME). We assessed a total of 200 patients and 100 healthy controls in our study. Headache was classified in participants using a self-administered questionnaire. Demographical, clinical features and headache characteristics were recorded. Seizure and headache temporal profiles were noted. Headache was present in 111 (56%) patients and 50 (50%) healthy participants...
January 11, 2018: Neurological Sciences
https://www.readbyqxmd.com/read/29323498/scaling-laws-in-directional-spreading-of-droplets-on-wettability-confined-diverging-tracks
#18
Uddalok Sen, Souvick Chatterjee, Ranjan Ganguly, Richard Dodge, Lisha Yu, Constantine M Megaridis
Spontaneous pumpless transport of droplets on wettability-confined tracks is important for various applications, such as rapid transport and mixing of fluid droplets, enhanced dropwise condensation, biomedical devices, etc. Recent studies have shown that on an open surface, a superhydrophilic track of diverging width, laid on a superhydrophobic background, facilitates the transport of water from the narrower end to the wider end at unprecedented rates (up to 40 cm/s), without external actuation. Keeping in mind that such designs play a key role for a diverse range of applications handling organic liquids and in point-of-care devices, the importance of characterizing the spreading behavior of viscous liquids on such surfaces cannot be over-emphasized...
January 11, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29322494/common-primary-and-secondary-causes-of-headache-in-the-elderly
#19
Tara L Sharma
OBJECTIVE/BACKGROUND: Headache in the elderly, defined as individuals aged 65 and older, although less prevalent than younger individuals, can present as a diagnostic challenge, given the increase in potentially fatal diseases within this population. METHODS: These individuals require a complete history, neurological examination, and assessment of potential secondary causes of headaches. RESULTS: Secondary causes include temporal or giant cell arteritis, subdural hematomas, central nervous system (CNS) tumors, strokes, and CNS infections...
January 11, 2018: Headache
https://www.readbyqxmd.com/read/29319611/comparison-of-somatosensory-cortex-excitability-between-migraine-and-strict-criteria-tension-type-headache-a-magnetoencephalographic-study
#20
Wei-Ta Chen, Fu-Jung Hsiao, Yu-Chieh Ko, Hung-Yu Liu, Pei-Ning Wang, Jong-Ling Fuh, Yung-Yang Lin, Shuu-Jiun Wang
Tension-type headache (TTH) and migraine are both common types of headaches. Despite distinct symptoms, TTH and migraine are highly comorbid and exhibit many clinical similarities. This study enrolled consecutive patients with TTH and age- and sex-matched patients with migraine and healthy controls to investigate whether TTH and migraine are similar in brain excitability change assessed by magnetoencephalography. Patients with TTH were excluded if they reported any headache features or associated symptoms of migraine...
January 9, 2018: Pain
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