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https://www.readbyqxmd.com/read/28926529/first-line-folfiri-and-bevacizumab-in-patients-with-advanced-colorectal-cancer-prospectively-stratified-according-to-serum-ldh-final-results-of-the-giscad-italian-group-for-the-study-of-digestive-tract-cancers-central-colorectalavastintrialldh-trial
#1
Riccardo Giampieri, Marco Puzzoni, Bruno Daniele, Daris Ferrari, Sara Lonardi, Alberto Zaniboni, Luigi Cavanna, Gerardo Rosati, Nicoletta Pella, Maria Giulia Zampino, Pietro Sozzi, Domenico Germano, Vittorina Zagonel, Carla Codecà, Michela Libertini, Roberto Labianca, Stefano Cascinu, Mario Scartozzi
BACKGROUND: Previous findings suggested that bevacizumab might be able to improve response rate (RR) in colorectal cancer patients with high lactic dehydrogenase (LDH) basal levels. METHODS: We conducted a phase II trial to prospectively ascertain whether bevacizumab in combination with FOLFIRI could have an improved clinical activity in patients with high LDH serum levels. Primary end point of the study was RR; secondary end points were median overall survival and median progression-free survival (mPFS)...
September 19, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28922453/disruption-of-human-stratum-corneum-lipid-structure-by-sodium-dodecyl-sulfate
#2
Kaori Yanase, Ichiro Hatta
OBJECTIVE: Surfactants are major ingredients of body soaps and cleansers. Among them, harsh ones have been demonstrated to damage the skin. Stratum corneum (SC), the outermost barrier of skin layer, is rich in intercellular lipids. This lipid structure can be disrupted by surfactants, impairing the barrier function of the skin. Thus, we investigated the surfactant-induced disruption of the intercellular lipid structure of human SC at the molecular level using synchrotron X-ray diffraction...
September 18, 2017: International Journal of Cosmetic Science
https://www.readbyqxmd.com/read/28921856/disruption-of-perineuronal-nets-increases-the-frequency-of-sharp-wave-ripple-events
#3
ZhiYong Sun, P Lorenzo Bozzelli, Adam Caccavano, Megan Allen, Jason Balmuth, Stefano Vicini, Jian-Young Wu, Katherine Conant
Hippocampal sharp wave ripples (SWRs) represent irregularly occurring synchronous neuronal population events that are observed during phases of rest and slow wave sleep. SWR activity that follows learning involves sequential replay of training-associated neuronal assemblies and is critical for systems level memory consolidation. SWRs are initiated by CA2 or CA3 pyramidal cells and require initial excitation of CA1 pyramidal cells as well as participation of parvalbumin (PV) expressing fast spiking (FS) inhibitory interneurons...
September 16, 2017: Hippocampus
https://www.readbyqxmd.com/read/28921696/exome-sequencing-identifies-a-tcf4-mutation-in-a-chinese-pedigree-with-symmetrical-acral-keratoderma
#4
Pingjiao Chen, Silong Sun, Kang Zeng, Changxing Li, Ju Wen, Jingyao Liang, Xin Tian, Yiqi Jiang, Jing Zhang, Sanquan Zhang, Kai Han, Chunlei Han, Xibao Zhang
BACKGROUND: Symmetrical acral keratoderma (SAK) is a rare skin disorder and its pathogenesis and inheritability are unknown. OBJECTIVES: To investigate the inheritance and pathogenesis of SAK. METHODS: Four SAK cases occurred in a four-generation Chinese family. Exome sequencing identified SNPs with potential SAK related mutations, and a potentially responsible gene (Transcription factor 4, TCF4) was identified. TCF4 was then sequenced in all 11 family members and pedigree analysis was performed...
September 18, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28921532/the-morphological-characterization-of-orientation-biased-displaced-large-field-ganglion-cells-in-the-central-part-of-goldfish-retina
#5
Hideo Hoshi, Fumi Sato
The vertebrate retina has about 30 subtypes of ganglion cells. Each ganglion cell receives synaptic inputs from specific types of bipolar and amacrine cells ramifying at the same depth of the inner plexiform layer (IPL), each of which is thought to process a specific aspect of visual information. Here, we identified one type of displaced ganglion cell in the goldfish retina which had a large and elongated dendritic field. As a population, all of these ganglion cells were oriented in the horizontal axis and perpendicular to the dorsal-ventral axis of the goldfish eye in the central part of retina...
September 18, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28920186/investigation-of-cis-trans-isomer-dependent-dermatotoxicokinetics-of-uv-filter-ethylhexyl-methoxycinnamate-through-stratum-corneum-in-vivo
#6
Anežka Sharma, Katarína Bányiová, Branislav Vrana, Ivan Justan, Pavel Čupr
2-Ethylhexyl methoxycinnamate (EHMC) is one of the most used ultraviolet filters in personal care products. It undergoes cis/trans isomerization in sunlight, and there is limited toxicological understanding of the effects of the cis-isomer. It is known that two geometric isomers of one compound can have different physico-chemical properties and effects. However, there are no studies focusing on toxicokinetics of EHMC isomerization products to compare their potential difference in dermal exposure to cis-EHMC and trans-EHMC due to the difference in their dermatotoxicokinetics...
September 17, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28915283/clinical-evaluation-of-a-multi-modal-facial-serum-that-addresses-hyaluronic-acid-levels-in-skin
#7
Susana Raab, Margarita Yatskayer, Stephen Lynch, Megan Manco, Christian Oresajo
BACKGROUND: Hyaluronic acid (HA), the major glycosaminoglycan present in the human skin, is a key contributor to water retention and mechanical support in skin. The level, size, and functionality of cutaneous HA are known to diminish with age. Topical treatments designed to increase the HA content of skin have been met with limited success. The purpose of this study was to evaluate the tolerance and efficacy of a multi-modal facial serum containing HA, Proxylane (C-Xyloside), purple rice extract, and dipotassium glycyrrhizate in addressing HA levels in skin...
September 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28914377/the-permeability-enhancing-mechanism-of-menthol-on-skin-lipids-a-molecular-dynamics-simulation-study
#8
Huanjie Wang, Fancui Meng
The stratum corneum (SC), the outermost layer of skin, represents the primary barrier to molecules penetrating the skin. Menthol is widely used in clinical medicine as a penetration enhancer due to its high efficiency and relative safety. In this study, molecular dynamics simulations have been performed to investigate the effect of menthol molecules on the structural and permeability of both single component and ternary mixed bilayers. The lipid matrix is modeled as pure ceramide (CER2) or as a 2:2:1 mixture of CER2, cholesterol (CHOL), and free fatty acid (FFA)...
September 15, 2017: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/28913392/data-on-scaling-up-and-in-vivo-human-study-of-progesterone-lipid-nanoparticles
#9
Elisabetta Esposito, Maddalena Sguizzato, Markus Drechsler, Paolo Mariani, Federica Carducci, Claudio Nastruzzi, Rita Cortesi
Progesterone containing nanoparticles constituted of tristearin or tristearin in association with caprylic-capric triglyceride were produced in a lab scale by ultrasound homogenization and in a pilot scale by high pressure homogenization. A study was conducted to select the pressure to be used in order to obtain homogenously sized nanoparticles. The Dialysis method was performed to mimic subcutaneous administration of lipid nanoparticles. Mathematical analyses of the results were conducted to understand and compare the drug release mechanisms...
October 2017: Data in Brief
https://www.readbyqxmd.com/read/28911866/molecular-dynamics-simulations-of-stratum-corneum-lipid-mixtures-a-multiscale-perspective
#10
Timothy C Moore, Christopher R Iacovella, Anne Leonhard, Annette L Bunge, Clare McCabe
The lipid matrix of the stratum corneum (SC) layer of skin is essential for human survival; it acts as a barrier to prevent rapid dehydration while keeping potentially hazardous material outside the body. While the composition of the SC lipid matrix is known, the molecular-level details of its organization are difficult to infer experimentally, hindering the discovery of structure-property relationships. To this end, molecular dynamics simulations, which give molecular-level resolution, have begun to play an increasingly important role in understanding these relationships...
September 11, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28911799/effects-of-glucocorticoids-on-stratum-corneum-lipids-and-function-in-human-skin-a-detailed-lipidomic-analysis
#11
Mads A Røpke, Cristina Alonso, Sora Jung, Hanne Norsgaard, Claudia Richter, Maxim E Darvin, Thomas Litman, Annika Vogt, Jürgen Lademann, Ulrike Blume-Peytavi, Jan Kottner
BACKGROUND: Topical glucocorticoids (GCs) are known to induce atrophy of human skin including thinning of epidermal and dermal compartments by influencing keratinocyte proliferation and synthesis of extracellular matrix proteins. GCs are also known to reduce skin barrier integrity but little is known about the changes in lipid composition in human skin following topical administration of GCs. OBJECTIVE: This study investigated the effects of GCs on stratum corneum (SC) function and lipid profile of human skin in vivo...
August 26, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28906043/diluted-sodium-hypochlorite-bleach-in-dogs-antiseptic-efficacy-local-tolerability-and-in-vitro-effect-on-skin-barrier-function-and-inflammation
#12
Frane Banovic, Thierry Olivry, Wolfgang Bäumer, Judy Paps, Jessica Stahl, Ana Rogers, Megan Jacob
BACKGROUND: Diluted sodium hypochlorite represents an inexpensive and widely available topical antiseptic, but there are no tolerability and efficacy data in veterinary dermatology. OBJECTIVES: To determine the in vivo antibacterial effect and tolerability of topical diluted bleach application and to assess its in vitro effect on skin barrier lipids and anti-inflammatory properties on keratinocytes. METHODS: Topical hypochlorite at 0.05% and tap water were applied to both sides of the thorax of four healthy dogs...
September 14, 2017: Veterinary Dermatology
https://www.readbyqxmd.com/read/28905642/socioeconomic-moderators-of-the-relationship-between-different-quitting-motives-and-smoking-cessation-in-hong-kong-men
#13
Francisco T T Lai, Wikki W K Wong, Joyce L Y Kwan
To facilitate effective tobacco control, it is important to identify the socioeconomic strata in which different quitting motives are more strongly associated with cessation. This study aims to examine such a moderating role of socioeconomic background. A total of 2022 past or current daily smoking men from the Hong Kong Thematic Household Survey 2010 who had attempted for cessation were analyzed. Binary socioeconomic indicators, quitting motives, and 1-year abstinence were entered in an exploratory backward-stepwise log-linear model, followed by a binary logistic regression to estimate the probability of one-year abstinence in each socioeconomic stratum...
September 1, 2017: Asia-Pacific Journal of Public Health
https://www.readbyqxmd.com/read/28900691/quantification-of-n-phenyl-2-naphthylamine-by-gas-chromatography-and-isotope-dilution-mass-spectrometry-and-its-percutaneous-absorption-ex-vivo-under-workplace-conditions
#14
Eike Maximilian Marek, Stephan Koslitz, Tobias Weiss, Manigé Fartasch, Gerhard Schlüter, Heiko Udo Käfferlein, Thomas Brüning
N-Phenyl-2-naphthylamine (P2NA) is an antioxidant used to protect rubbers from flex-cracking. P2NA can be converted in vivo to 2NA, one of the most potent bladder carcinogens. Here, we report the specific and ultra-sensitive quantification of P2NA in the receptor fluid of Franz diffusion cells by gas chromatography and isotope-dilution tandem-mass spectroscopy (GC-MS/MS). The experimental conditions were optimized to minimize losses of P2NA due to surface absorption on glass, plastic, and rubber material, and subsequently validated...
September 12, 2017: Archives of Toxicology
https://www.readbyqxmd.com/read/28899209/microneedle-mediated-transdermal-delivery-of-nanostructured-lipid-carriers-for-alkaloids-from-aconitum-sinomontanum
#15
Teng Guo, Yongtai Zhang, Zhe Li, Jihui Zhao, Nianping Feng
A combination method using microneedle (MN) pretreatment and nanostructured lipid carriers (NLCs) was developed to improve the transdermal delivery of therapeutics. The MN treatment of the skin and co-administration of NLCs loaded with total alkaloids isolated from Aconitum sinomontanum (AAS-NLCs) significantly increased the skin permeation of the drugs. Fluorescence imaging confirmed that MNs could provide microchannels penetrating the stratum corneum, and delivery of NLCs through the channels led to their deeper permeation...
September 12, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28892649/expression-of-phosphate-transporters-during-dental-mineralization
#16
L Merametdjian, S Beck-Cormier, N Bon, G Couasnay, S Sourice, J Guicheux, C Gaucher, L Beck
The importance of phosphate (Pi) as an essential component of hydroxyapatite crystals suggests a key role for membrane proteins controlling Pi uptake during mineralization in the tooth. To clarify the involvement of the currently known Pi transporters (Slc17a1, Slc34a1, Slc34a2, Slc34a3, Slc20a1, Slc20a2, and Xpr1) during tooth development and mineralization, we determined their spatiotemporal expression in murine tooth germs from embryonic day 14.5 to postnatal day 15 and in human dental samples from Nolla stages 6 to 9...
September 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28889318/human-axillary-skin-condition-is-improved-following-incorporation-of-glycerol-into-the-stratum-corneum-from-an-antiperspirant-formulation
#17
Richard L Evans, Graham A Turner, Susan Bates, Teresa Robinson, David Arnold, Robert E Marriott, Paul D A Pudney, Eleanor Y M Bonnist, Darren Green
The study objectives were to demonstrate that glycerol, when topically applied from a roll-on antiperspirant formulation, can be delivered directly to human skin ex vivo and the axillary stratum corneum (SC) in vivo, and to assess whether it improves the quality of the axillary skin barrier. Ex vivo human skin absorption of glycerol was measured following application of a roll-on antiperspirant formulation containing 4% (13)C3-glycerol. Skin distribution of (13)C3-glycerol over 24 h was assessed using gas chromatography-mass spectrometry...
September 9, 2017: Archives of Dermatological Research
https://www.readbyqxmd.com/read/28881348/accelerating-topical-anaesthesia-using-microneedles
#18
Lleucu B Davies, Christopher Gateley, Phillip Holland, Siôn A Coulman, James C Birchall
BACKGROUND/AIMS: Topical anaesthetics reduce pain during venous access procedures in children. However, clinical use is hindered by a significant anaesthetic onset time. Restricted diffusion of the topical anaesthetic through the stratum corneum barrier is the principal reason for the delayed onset. Microneedles can painlessly pierce the skin. This study evaluated microneedle pre-treatment of ex vivo human skin as a means to increase the rate of tetracaine permeation, in order to accelerate the onset of anaesthesia...
September 8, 2017: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/28879870/a-study-of-the-histopathology-of-palmo-plantar-psoriasis-and-hyperkeratotic-palmo-plantar-dermatitis
#19
Ashwin Rao, Sujay Khandpur, M Kalaivani
Background and Objectives: Palmo-plantar psoriasis and dermatitis show several overlapping clinical features. We undertook this retrospective study to elucidate and compare the histological findings in these two dermatoses. Materials and Methods: Biopsies of 31 clinically diagnosed cases of palmo-plantar psoriasis and 24 cases of hyperkeratotic palmo-plantar dermatitis, with concomitant presence of representative lesions at other body sites, were retrieved and analysed...
September 7, 2017: Indian Journal of Dermatology, Venereology and Leprology
https://www.readbyqxmd.com/read/28877115/quantitation-of-24-hour-moisturization-by-electrical-measurements-of-skin-hydration
#20
R Randall Wickett, Bronson Damjanovic
PURPOSE: The purpose of this study was to quantify the effects of several moisturizers on hydration of the stratum corneum by measuring their effect on electrical conductance over a 24-hour period. DESIGN: Double-blind, randomized controlled trial. SUBJECTS AND SETTING: Twenty-five healthy female volunteers aged 18 to 65 years with dry skin on the lower legs and no other known dermatologic pathology participated in the study. Additional exclusion criteria were pregnant or taking anti-inflammatory steroids...
September 2017: Journal of Wound, Ostomy, and Continence Nursing
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