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stretch marks

Y Fu, Y M Lin, J H Winston, R Radhakrishnan, L-Y M Huang, X Z Shi
BACKGROUND: Previous studies found that visceral sensitivity is increased in bowel obstruction (BO). We hypothesized that mechanical stress-induced expression of BDNF in smooth muscle cells (SMC) of the distended bowel plays a critical role in visceral hypersensitivity in BO by altering voltage-gated K+ channel (Kv ) activity in sensory neurons. METHODS: Partial colon obstruction was maintained in rats for 7 days. Colon-projecting neurons in the dorsal root ganglia (DRG, T13 to L2) were isolated for electrophysiological and gene expression studies...
May 21, 2018: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
Friedrich-Eckart Isemer, Ulrich Dietz, Maximilian Ackermann
INTRODUCTION: Surgical approaches to flank hernias have been poorly standardised. The most demanding issues in intermuscular net insertion are the limited area in the dorsal direction and the difficulties in fixing the net to the costal arch or the iliac crest. This is why many different surgical procedures have been published. PATIENTS/MATERIAL AND METHODS: From August 2015 to October 2016, nine patients with a primary incisional lateral hernia received open retromuscular preperitoneal mesh repair...
May 18, 2018: Zentralblatt Für Chirurgie
Ejaife O Agbani, Christopher M Williams, Yong Li, Marion Tj van den Bosch, Samantha F Moore, Adele Mauroux, Lorna Hodgson, Alan S Verkman, Ingeborg Hers, Alastair W Poole
In response to collagen stimulation, platelets use a coordinated system of fluid entry to undergo membrane ballooning, procoagulant spreading, and microvesiculation. We hypothesized that water entry was mediated by the water channel aquaporin-1 (AQP1) and aimed to determine its role in the platelet procoagulant response and thrombosis. We established that human and mouse platelets express AQP1 and localize to internal tubular membrane structures. However, deletion of AQP1 had minimal effects on collagen-induced platelet granule secretion, aggregation, or membrane ballooning...
May 17, 2018: JCI Insight
Lionel London, Sebastian Khan, Edward Fauchon-Jones, Cecilio García, Mark Hannam, Sascha Husa, Xisco Jiménez-Forteza, Chinmay Kalaghatgi, Frank Ohme, Francesco Pannarale
Gravitational-wave observations of binary black holes currently rely on theoretical models that predict the dominant multipoles (ℓ=2,|m|=2) of the radiation during inspiral, merger, and ringdown. We introduce a simple method to include the subdominant multipoles to binary black hole gravitational waveforms, given a frequency-domain model for the dominant multipoles. The amplitude and phase of the original model are appropriately stretched and rescaled using post-Newtonian results (for the inspiral), perturbation theory (for the ringdown), and a smooth transition between the two...
April 20, 2018: Physical Review Letters
J Ferruzzi, D Madziva, A W Caulk, G Tellides, J D Humphrey
Aging leads to central artery stiffening and associated hemodynamic sequelae. Because healthy arteries exhibit differential geometry, composition, and mechanical behaviors along the central vasculature, we sought to determine whether wall structure and mechanical function differ across five vascular regions-the ascending and descending thoracic aorta, suprarenal and infrarenal abdominal aorta, and common carotid artery-in 20 versus 100-week-old male wild-type mice. Notwithstanding generally consistent changes across these regions, including a marked thickening of the arterial wall, diminished in vivo axial stretch, and loss of elastic energy storage capacity, the degree of changes tended to be slightly greater in abdominal than in thoracic or carotid vessels...
May 12, 2018: Biomechanics and Modeling in Mechanobiology
G N Christodoulou, M Margariti, N Christodoulou
The Delusional Misidentification Syndromes (DMSs) are characterized by defective integration of the normally The Delusional Misidentification Syndromes (DMSs) are characterized by defective integration of the normally fused functions of perception and recognition. The classical sub-types are: the syndromes of Capgras, Fregoli,Intermetamorphosis (mentioned in 3) and Subjective doubles. These syndromes occur in a clear sensorium and shouldbe differentiated from the banal transient misidentifications occurring in confusional states and in mania and from thenon-delusional misidentifications (e...
January 2018: Psychiatrikē, Psychiatriki
Lisa A Zaleski-Larsen, Isabela T Jones, Isabella Guiha, Douglas C Wu, Mitchel P Goldman
BACKGROUND: Few effective treatments exist for striae alba, which are the mature stage of stretch marks. OBJECTIVE: To evaluate the efficacy of the nonablative fractional 1,565-nm Er:glass and the picosecond fractional 1,064/532-nm Nd:YAG lasers in the treatment of striae alba. MATERIALS AND METHODS: Twenty subjects with striae alba on the bilateral abdomen were treated with either the nonablative fractional 1565-nm Er:glass or the picosecond fractional 1,064/532-nm Nd:YAG laser, with a total of 3 treatments 3 weeks apart...
May 9, 2018: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
Diego Sorbelli, Leonardo Belpassi, Francesco Tarantelli, Paola Belanzoni
We quantitatively assess the Dewar-Chatt-Duncanson (DCD) components of the Au(III)-CO bond and the charge density polarization at the CO, in a series of neutral, cationic, and dicationic bis- and monocyclometalated gold(III) complexes via charge-displacement (CD) analysis. A striking feature concerns the very small net electron charge flux from CO to the metal fragment which is unexpectedly stable toward both the charge of the complex and the oxidation state of gold (I, III). All systems exhibit a similar trend for the σ charge rearrangement in the region of the carbonyl bond, where, by contrast, the π back-donation trend variation is large, which is strictly correlated to the change in CO bond distance and the shift in CO stretching frequencies, in close analogy with the gold(I) carbonyl complexes...
May 9, 2018: Inorganic Chemistry
A L M Batista de Carvalho, S F Parker, L A E Batista de Carvalho, M P M Marques
The introduction of cisplatin to oncology, in the 1970s, marked the onset of the search for novel and improved metal-based anticancer drugs. Polynuclear PtII and PdII complexes with linear alkylamines as bridging ligands are a class of potential antineoplastic agents that have shown promising cytotoxicity against low-prognosis human cancers, such as metastatic breast adenocarcinoma and osteosarcoma. The present study reports an analysis of [μ-N,N'-bis(3-aminopropyl)butane-1,4-diamine-κ4 N,N':N'',N''']bis[dichloridoplatinum(II)], [Pt2 Cl4 (C10 H26 N4 )], denoted Pt2 Spm (Spm is spermine), by vibrational spectroscopy coupled to theoretical calculations...
May 1, 2018: Acta Crystallographica. Section C, Structural Chemistry
Rafael Lemaitre, Dwi Listyo Rahayu, Tomoyuki Komai
For 130 years the diogenid genus Paguropsis Henderson, 1888 was considered monotypic for an unusual species, P. typica Henderson, 1888, described from the Philippines and seldom reported since. Although scantly studied, this species is known to live in striking symbiosis with a colonial sea anemone that the hermit can stretch back and forth like a blanket over its cephalic shield and part of cephalothoracic appendages, and thus the common name "blanket-crab". During a study of paguroid collections obtained during recent French-sponsored biodiversity campaigns in the Indo-West Pacific, numerous specimens assignable to Paguropsis were encountered...
2018: ZooKeys
Somayeh Javidanpour, Mahin Dianat, Mohammad Badavi, Seyyed Ali Mard
The incidence of arrhythmias is the main cause of high mortality after myocardial infarction (AMI). The aim of the present study was to determine whether the rosmarinic acid (RA) could reduce the stretch-induced arrhythmias (SIAs) related to overexpression of NCX1 after AMI. Adult male Sprague-Dawley rats were randomly allocated into six groups: Sham, MI (100 mg/kg of isoproterenol (Iso), subcutaneously, on two consecutive days), RA (30 mg/kg, orally, 14 days), and RA (10, 15 and 30 mg/kg, 14 days) + I...
March 30, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Haoqi Yang, Shaohua Jiang, Hong Fang, Xiaowu Hu, Gaigai Duan, Haoqing Hou
Quantitative explanation on the improved mechanical properties of aligned electrospun polyimide (PI) nanofibers as the increased imidization temperatures is highly required. In this work, polarized FT-IR spectroscopy is applied to solve this problem. Based on the polarized FT-IR spectroscopy and the molecular model in the fibers, the length of the repeat unit of PI molecule, the angle between the fiber axis and the symmetric stretching direction of carbonyl group on the imide ring, and the angle between the PI molecular axis and fiber axis are all investigated...
April 24, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Ivan V Antonov, Evgeny Mazurov, Mark Borodovsky, Yulia A Medvedeva
The genomes of mammalian species are pervasively transcribed producing as many noncoding as protein-coding RNAs. There is a growing body of evidence supporting their functional role. Long noncoding RNA (lncRNA) can bind both nucleic acids and proteins through several mechanisms. A reliable computational prediction of the most probable mechanism of lncRNA interaction can facilitate experimental validation of its function. In this study, we benchmarked computational tools capable to discriminate lncRNA from mRNA and predict lncRNA interactions with other nucleic acids...
April 24, 2018: Briefings in Bioinformatics
Lamei Yu, Byung Mun Park, Yong Jin Ahn, Gi-Ja Lee, Suhn Hee Kim
Hydrogen sulfide (H2 S) is normally produced from L-cysteine in mammalian tissues and related to the pathogenesis of cardiovascular diseases. The aim of this study is to investigate the effects of H2 S donor on atrial natriuretic peptide (ANP) secretion and define its mechanism using normal and isoproterenol (ISP)-treated rats. Several H2 S donors were perfused into isolated beating rat atria, and atrial pressure (AP) and ANP secretion were measured. NaHS augmented high stretch-induced ANP secretion and decreased AP in a dose-dependent manner...
April 20, 2018: Peptides
Duc Nguyen, Gyeongwon Kang, Naihao Chiang, Xu Chen, Tamar Seideman, Mark C Hersam, George C Schatz, Richard P Van Duyne
Ultrahigh vacuum tip-enhanced Raman spectroscopy (UHV-TERS) is used to investigate adsorption of molecular oxygen (O2 ) on cobalt (II) phthalocyanine (CoPc) supported on Ag(111) single crystal surfaces, which is the initial step for the oxygen reduction reaction (ORR) using metal Pc catalysts. Two adsorption configurations are primarily observed, assigned as O2 /CoPc/Ag(111) and O/CoPc/Ag(111) based on scanning tunneling microscopy (STM) imaging, TERS, isotopologue substitution, and density functional theory (DFT) calculations...
April 23, 2018: Journal of the American Chemical Society
Janez Prešern, Jernej Polajnar, Maarten de Groot, Maja Zorović, Meta Virant-Doberlet
Although vibrational signalling is among the most ancient and common forms of communication, many fundamental aspects of this communication channel are still poorly understood. Here, we studied mechanisms underlying orientation towards the source of vibrational signals in the stink bug Nezara viridula (Hemiptera, Pentatomidae), where female vibrational song enables male to locate her on the bean plant. At the junction between the main stem and the leaf stalks, male placed his legs on different sides of the branching and orientation at the branching point was not random...
April 3, 2018: Scientific Reports
Mei Sun, Ryo Ishii, Kenichi Okumura, Adrienn Krauszman, Siegfried Breitling, Olga Gomez, Aleksander Hinek, Stellar Boo, Boris Hinz, Kim A Connelly, Wolfgang M Kuebler, Mark K Friedberg
BACKGROUND: Development of right ventricular (RV) hypertension eventually contributes to RV and left ventricular (LV) myocardial fibrosis and dysfunction. The molecular mechanisms are not fully elucidated. METHODS AND RESULTS: Pulmonary artery banding was used to induce RV hypertension in rats in vivo. Then, we evaluated cardiac function and regional remodeling 6 weeks after pulmonary artery banding. To further elucidate mechanisms responsible for regional cardiac remodeling, we also mimicked RV hypertensive stress by cyclic mechanical stretching applied to confluent cultures of cardiac fibroblasts, isolated from the RV free wall, septal hinge points, and LV free wall...
March 29, 2018: Journal of the American Heart Association
Lotte Poulsen, Andrea Pusic, Sam Robson, Jens Ahm Sorensen, Michael Rose, Claus Bogh Juhl, Rene Klinkby Stoving, Alin Andries, Anne F Klassen
Background: Stretch marks are common permanent dermal lesions that can cause psychosocial distress. A number of treatment modalities are available, with the majority targeted towards collagen production. Objective: To develop and field-test a new BODY-Q scale to measure appearance of stretch marks in order to provide a means to incorporate the patient perspective into future treatment studies. Methods: We previously described the development of the BODY-Q conceptual framework, which involved a literature review, 63 patient interviews, 22 cognitive interviews and input from 9 experts, and the international field-test study that involved 403 weight loss and 331 body contouring patients...
March 27, 2018: Aesthetic Surgery Journal
Jonas Gregorio de Souza, Denise Pahl Schaan, Mark Robinson, Antonia Damasceno Barbosa, Luiz E O C Aragão, Ben Hur Marimon, Beatriz Schwantes Marimon, Izaias Brasil da Silva, Salman Saeed Khan, Francisco Ruji Nakahara, José Iriarte
The discovery of large geometrical earthworks in interfluvial settings of southern Amazonia has challenged the idea that Pre-Columbian populations were concentrated along the major floodplains. However, a spatial gap in the archaeological record of the Amazon has limited the assessment of the territorial extent of earth-builders. Here, we report the discovery of Pre-Columbian ditched enclosures in the Tapajós headwaters. The results show that an 1800 km stretch of southern Amazonia was occupied by earth-building cultures living in fortified villages ~Cal AD 1250-1500...
March 27, 2018: Nature Communications
Michael Karsy, Cheryl A Palmer, Mark A Mahan
BACKGROUND: Laminins are extracellular matrix proteins that participate in endoneurial tubule formation and are important in the regeneration of nerves after injury. They act as scaffolds to guide nerves to distal targets and play a key role in neurite outgrowth. Because there is evidence that laminin architecture affects nerve regeneration, we evaluated endoneurial tubules by examining the laminin structure in clinical samples from patients with nerve injuries. METHODS: In a retrospective review of eight nerve injury cases, we evaluated nerve histology in relation to clinical history and injury type...
January 18, 2018: Curēus
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