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https://www.readbyqxmd.com/read/28448311/surgical-techniques-for-closure-of-a-scalp-defect-after-resection-of-skin-malignancy
#1
Maciej Rysz, Dariusz Grzelecki, Maciej Mazurek, Stanisław Starościak, Romuald Krajewski
BACKGROUND: Surgery for scalp malignancies is aimed at the complete resection and a good aesthetic outcome. The goal was to develop an algorithm for scalp reconstruction based on the authors' surgical experience. METHODS: This is a retrospective analysis of 123 procedures of scalp malignancies in 105 patients. Twenty eight procedures were for resection of squamous cell carcinoma, 54 for basal cell carcinoma, and 41 for suspected melanomas. RESULTS: Primary closure (27 procedures), local flap (LF; 19), split-thickness skin graft (SG; 64), rotated LF and SG (9), and free vascularized flaps (4) were used...
April 12, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28447784/dft-based-comparative-study-about-the-influence-of-fluorine-and-hydroxyl-anions-on-opto-electric-properties-of-borate-crystals-choice-for-better-anion
#2
Beenish Bashir, Bingbing Zhang, Ming-Hsien Lee, Shilie Pan, Zhihua Yang
Replacing hydroxyl anions OH¯ by fluorine anions F¯ in borates can cause the blue shift of the UV cutoff edge and also exhibits apparent differences in nonlinear optical (NLO) properties. To clarify the intrinsic difference between OH¯ anions and F¯ anions, several typical borates with different types of cations (p-cations with lone-pair electrons, trivalent rare-earth, and alkaline earth metals) have been studied. The theoretical studies reveal that the blue shift in the band gap of borates with fluorine as compared to those with hydroxyl can be assumed to be the result of weaker interaction of the cation-fluoride (La/Bi/B-F) bonds compared to that of the cation-oxygen and hydroxyl bonds...
April 27, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28447325/interferon-free-therapy-with-sofosbuvir-plus-ribavirin-for-successful-treatment-of-genotype-2-hepatitis-c-virus-with-lichen-planus-a-case-report
#3
Ayumu Yoshikawa, Katsumi Terashita, Kenichi Morikawa, Soichiro Matsuda, Takahiro Yamamura, Koichiro Sarashina, Shintaro Nakano, Yoshimitsu Kobayashi, Susumu Sogabe, Kazuhiro Takahashi, Shin Haba, Hisashi Oda, Tatsuro Takahashi, Takuto Miyagishima, Naoya Sakamoto
Hepatitis C virus (HCV) infection remains the main cause of liver disease and can lead to chronic hepatitis, cirrhosis, and hepatocellular carcinoma. HCV may also develop extrahepatic manifestations in the skin, eyes, joints, kidneys, nervous system, and immune system. In fact, several studies reported that up to 70% of HCV patients experienced extrahepatic manifestations. Lichen planus (LP), which is an immune system disorder that is triggered by viral infections, allergens, and stress, can affect the skin, mouth, nails, and scalp...
April 26, 2017: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/28447188/chemometric-evaluation-of-elemental-imbalances-in-the-scalp-hair-of-valvular-heart-disease-patients-in-comparison-with-healthy-donors
#4
Asim Ilyas, Munir H Shah
The present study deals with the plausible association between the trace elemental imbalances and the emergence of valvular heart disease (VHD). A total of 14 elements including Ca, Cd, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Na, Pb, Sr and Zn in the scalp hair of VHD patients and healthy donors were analysed by flame atomic absorption spectrophometry employing wet acid digestion methodology. Median levels of Cu, Fe, Mg, Mn and Sr in the scalp hair of patients were significantly higher compared to those of the healthy donors, while the median concentrations of K and Na were found to be considerably higher in the scalp hair of the healthy donors...
April 26, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28446580/entrainment-of-visual-steady-state-responses-is-modulated-by-global-spatial-statistics
#5
Thomas Nguyen, Karl Kuntzelman, Vladimir Miskovic
The rhythmic delivery of visual stimuli evokes large-scale neuronal entrainment in the form of steady-state oscillatory field responses. The spatio-temporal properties of stimulus drive appear to constrain the relative degrees of neuronal entrainment. Specific frequency ranges, for example, are uniquely suited for enhancing the strength of stimulus-driven brain oscillations. When it comes to the nature of the visual stimulus itself, studies have used a plethora of inputs ranging from spatially unstructured empty fields to simple contrast patterns (checkerboards, gratings, stripes) and complex arrays (human faces, houses, natural scenes)...
April 26, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28446119/neurobionics-and-the-brain-computer-interface-current-applications-and-future-horizons
#6
Jeffrey V Rosenfeld, Yan Tat Wong
The brain-computer interface (BCI) is an exciting advance in neuroscience and engineering. In a motor BCI, electrical recordings from the motor cortex of paralysed humans are decoded by a computer and used to drive robotic arms or to restore movement in a paralysed hand by stimulating the muscles in the forearm. Simultaneously integrating a BCI with the sensory cortex will further enhance dexterity and fine control. BCIs are also being developed to: provide ambulation for paraplegic patients through controlling robotic exoskeletons; restore vision in people with acquired blindness; detect and control epileptic seizures; and improve control of movement disorders and memory enhancement...
May 1, 2017: Medical Journal of Australia
https://www.readbyqxmd.com/read/28445839/temporal-lobe-spikes-eeg-fmri-contributions-to-the-mesial-vs-lateral-debate
#7
Satsuki Watanabe, François Dubeau, Natalja Zazubovits, Jean Gotman
OBJECTIVE: It has been reported that interictal epileptic discharges (IEDs) recorded in temporal regions on scalp EEG are unlikely to originate from mesial temporal structures. However, EEG-fMRI sometimes show mesial temporal activation. We hypothesized that BOLD activation in the temporal neocortex is weaker than in the mesial structures, reflecting the fact that propagated activity has less metabolic demand than the original discharge. METHODS: Twelve patients with epilepsy who have BOLD response in mesial temporal structures were selected from our EEG-fMRI database...
April 9, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28445551/pattern-classification-of-eeg-signals-reveals-perceptual-and-attentional-states
#8
Alexandra List, Monica D Rosenberg, Aleksandra Sherman, Michael Esterman
Pattern classification techniques have been widely used to differentiate neural activity associated with different perceptual, attentional, or other cognitive states, often using fMRI, but more recently with EEG as well. Although these methods have identified EEG patterns (i.e., scalp topographies of EEG signals occurring at certain latencies) that decode perceptual and attentional states on a trial-by-trial basis, they have yet to be applied to the spatial scope of attention toward global or local features of the display...
2017: PloS One
https://www.readbyqxmd.com/read/28444975/dissociation-between-the-neural-correlates-of-conscious-face-perception-and-visual-attention
#9
Joaquin Navajas, Aleksander W Nitka, Rodrigo Quian Quiroga
Given the higher chance to recognize attended compared to unattended stimuli, the specific neural correlates of these two processes, attention and awareness, tend to be intermingled in experimental designs. In this study, we dissociated the neural correlates of conscious face perception from the effects of visual attention. To do this, we presented faces at the threshold of awareness and manipulated attention through the use of exogenous prestimulus cues. We show that the N170 component, a scalp EEG marker of face perception, was modulated independently by attention and by awareness...
April 26, 2017: Psychophysiology
https://www.readbyqxmd.com/read/28444499/hair-trace-element-and-electrolyte-content-in-women-with-natural-and-in-vitro-fertilization-induced-pregnancy
#10
Anatoly V Skalny, Alexey A Tinkov, Irina Voronina, Olga Terekhina, Margarita G Skalnaya, Yulia Kovas
The objective of the present study was to perform comparative analysis of hair trace element content in women with natural and in vitro fertilization (IVF)-induced pregnancy. Hair trace element content in 33 women with IVF-induced pregnancy and 99 age- and body mass index-matched control pregnant women (natural pregnancy) was assessed using inductively coupled plasma mass spectrometry. The results demonstrated that IVF-pregnant women are characterized by significantly lower hair levels of Cu, Fe, Si, Zn, Ca, Mg, and Ba at p < 0...
April 25, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28442882/comparative-analysis-of-immunopathological-features-of-lichen-planopilaris-and-female-patients-with-frontal-fibrosing-alopecia
#11
Emanuella Rd Cerqueira, Neusa Valente, Mírian Nacagami Sotto, Ricardo Romiti
BACKGROUND: Frontal fibrosing alopecia (FFA) is a disorder characterized by progressive cicatricial alopecia (CA). Its classification as a clinical variant of lichen planopilaris (LPP) or as a unique disorder is controversial. The presence of Langerhans cells within the bulge area and the sebaceous epithelium and the presence of lymphocytic infiltrate in this area in CA have led to a series of hypotheses, although limited, about their development. To our knowledge, scarce is the literature demonstrating immunoanalytical studies comparing both disorders...
October 2016: International Journal of Trichology
https://www.readbyqxmd.com/read/28442880/trichoscopic-patterns-in-squamous-cell-carcinoma-a-case-report
#12
Balachandra S Ankad, Mahajabeen Madarkar, Gourishetty Saipriya, Punit S Sakhare, Vijay D Dombale
Squamous cell carcinoma (SCC) is the second most cutaneous malignancy after basal cell carcinoma (BCC) with increasing incidence. In the view its nodular manifestation; it can appear similar to nodular BCC, atypical fibroxanthoma, sclerosing liposarcoma and desmoplastic melanoma. Prognostic and therapeutic implications are different in all these conditions and thus their distinction becomes important. Trichoscopy is a simple and non-invasive technique to visualize certain morphological features of skin lesions and it improves the diagnostic accuracy for melanocytic and nonmelanocytic pigmented lesions...
October 2016: International Journal of Trichology
https://www.readbyqxmd.com/read/28442877/aplasia-cutis-congenita-trichoscopy-findings
#13
Ana Maria Costa Pinheiro, Eduardo Botelho Silva Mauad, Luís Fernando Amarante Fernandes, Raffaela Bruno Drumond
Aplasia cutis congenita (ACC) is a rare disorder characterized by localized absence of skin that most commonly affects the scalp. We present a case of ACC in a 45-day-old girl and the dermoscopic findings. Dermoscopy has shown to be an easy, fast and useful method for the diagnosis of this condition.
October 2016: International Journal of Trichology
https://www.readbyqxmd.com/read/28442874/graham-little-piccardi-syndrome-a-lens-through-beyond-what-is-known
#14
Abhijit Saha, Joly Seth, Anupam Das, Sandipan Dhar
Graham-Little-Piccardi syndrome (GLPS) is a rare form of follicular lichen planus and comprises cicatricial alopecia of the scalp, noncicatricial alopecia of the axillae, and/or pubis and spinous follicular papules involving the trunk and extremities. We herein report a classic case of GLPS in a 49-year-old female. Uniqueness of our case is due to its additional features of frontal fibrosing alopecia (FFA). Although overlap between GLPS and FFA has been mentioned in literature, such numbers are scanty. Therapeutic response with oral steroid and retinoid is also far better in contrast to what is described in the existing literature...
October 2016: International Journal of Trichology
https://www.readbyqxmd.com/read/28442872/olmsted-syndrome-in-a-family
#15
Rajyalaxmi Konathan, Sainath Kumar Alur
Olmsted syndrome (OS) is a rare disorder characterized by the combination of periorificial, keratotic plaques, and bilateral palmoplantar keratoderma. Synonyms are mutilating palmoplantar keratoderma with periorificial keratotic plaques (ORPHA659, MIM #614594 and #300918). A number sign (#) is used with this entry because of evidence that mutilating palmoplantar keratoderma with periorificial keratotic plaques (OS) is caused by heterozygous mutation in the TRPV3 gene on chromosome 17p13.2. We report three cases of OS, two females and one male in the same family, who presented with palmoplantar keratoderma, sparse scalp hair, cheilitis, and periorificial fissures...
October 2016: International Journal of Trichology
https://www.readbyqxmd.com/read/28442871/epithelioma-adenoides-cysticum-a-report-of-two-cases-in-a-family
#16
Najeeba Riyaz, Bindurani Sudhamani, Arakkal Riyaz
Epithelioma adenoides cysticum or multiple trichoepitheliomas are rare benign hamartomas arising from the hair germ. A 35-year-old female presented with multiple skin-colored firm papules and nodules mainly affecting the central face, scalp, and external ear canal since the age of 9 years. The lesions gradually increased with age. Her 13-year-old son also had similar but smaller lesions on the central face. Histopathology was consistent with trichoepithelioma.
October 2016: International Journal of Trichology
https://www.readbyqxmd.com/read/28441303/surgical-techniques-for-closure-of-a-scalp-defect-after-resection-of-skin-malignancy
#17
Maciej Rysz, Dariusz Grzelecki, Maciej Mazurek, Stanisław Starościak, Romuald Krajewski
BACKGROUND: Surgery for scalp malignancies is aimed at the complete resection and a good aesthetic outcome. The goal was to develop an algorithm for scalp reconstruction based on the authors' surgical experience. METHODS: This is a retrospective analysis of 123 procedures of scalp malignancies in 105 patients. Twenty eight procedures were for resection of squamous cell carcinoma, 54 for basal cell carcinoma, and 41 for suspected melanomas. RESULTS: Primary closure (27 procedures), local flap (LF; 19), split-thickness skin graft (SG; 64), rotated LF and SG (9), and free vascularized flaps (4) were used...
May 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28439519/structured-illumination-diffuse-optical-tomography-for-noninvasive-functional-neuroimaging-in-mice
#18
Matthew D Reisman, Zachary E Markow, Adam Q Bauer, Joseph P Culver
Optical intrinsic signal (OIS) imaging has been a powerful tool for capturing functional brain hemodynamics in rodents. Recent wide field-of-view implementations of OIS have provided efficient maps of functional connectivity from spontaneous brain activity in mice. However, OIS requires scalp retraction and is limited to superficial cortical tissues. Diffuse optical tomography (DOT) techniques provide noninvasive imaging, but previous DOT systems for rodent neuroimaging have been limited either by sparse spatial sampling or by slow speed...
April 2017: Neurophotonics
https://www.readbyqxmd.com/read/28439342/secukinumab-in-the-treatment-of-palmoplantar-nail-scalp-and-pustular-psoriasis
#19
REVIEW
April W Armstrong, Ron Vender, Leon Kircik
No abstract text is available yet for this article.
June 2016: Journal of Clinical and Aesthetic Dermatology
https://www.readbyqxmd.com/read/28439233/concealed-unobtrusive-ear-centered-eeg-acquisition-ceegrids-for-transparent-eeg
#20
Martin G Bleichner, Stefan Debener
Electroencephalography (EEG) is an important clinical tool and frequently used to study the brain-behavior relationship in humans noninvasively. Traditionally, EEG signals are recorded by positioning electrodes on the scalp and keeping them in place with glue, rubber bands, or elastic caps. This setup provides good coverage of the head, but is impractical for EEG acquisition in natural daily-life situations. Here, we propose the transparent EEG concept. Transparent EEG aims for motion tolerant, highly portable, unobtrusive, and near invisible data acquisition with minimum disturbance of a user's daily activities...
2017: Frontiers in Human Neuroscience
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