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https://www.readbyqxmd.com/read/29332110/association-of-psychological-stress-with-skin-symptoms-among-medical-students
#1
Ghada A Bin Saif, Hala M Alotaibi, Abdullateef A Alzolibani, Noor A Almodihesh, Hamad F Albraidi, Najed M Alotaibi, Gil Yosipovitch
To evaluate the association between psychological stress and skin symptoms among medical students.  Methods: A cross-sectional study was carried out between January and June 2015. Electronic survey consists of Perceived Stress Questionnaire (PSQ) and Self-Reported Skin Complaints Questionnaire were distributed to all 1435 undergraduate students at College of Medicine, King Saud University (KSU), Riyadh, Saudi Arabia. Results: Final analysis was performed on data from 529 (36.9%) students. Students were divided into three groups: least stressed students, n=135, PSQ index less than 0...
January 2018: Saudi Medical Journal
https://www.readbyqxmd.com/read/29280335/amyloidosis-diagnosed-in-cytology-specimen-of-pleural-effusion-a-case-report
#2
Rashmi Manur, Ihab Lamzabi
Amyloidosis is a rare condition resulting from extracellular deposition of amyloid, a fibrillary material derived from various precursor proteins. Involvement of the pleura by amyloidosis is a rare but serious complication. Pleural amyloidosis is primarily diagnosed by identifying amyloid deposition by histology on pleural biopsy specimens. Hereby, we report a case of systemic amyloidosis where we were able to identify amyloid in a pleural effusion specimen sent for cytopathology evaluation. A 59-year-old male with newly diagnosed multiple myeloma and systemic amyloidosis underwent therapeutic thoracentesis...
December 27, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/29274426/anti-digestion-properties-of-amylosucrase-modified-waxy-corn-starch
#3
Hao Zhang, Zhengxing Chen, Xing Zhou, Jian He, Tao Wang, Xiaohu Luo, Li Wang, Ren Wang
Amylosucrase is a valuable enzymatic tool for the preparation of resistant starch (RS). This study investigated the morphology, thermal properties and molecular structure of the RS components resulting from the digestion of amylosucrase modified starches (MSs). Morphology of starch samples suggests that the surface of MSs is partially attacked by the digestion enzymes. Besides, the peak melting temperature of RSs shows a considerable increase compared with that of the corresponding MSs. Branch chain length distributions data reveals that the long branch chains of MSs are prone to being hydrolyzed, and the branch chains with degree polymerization of 22-32 are the largest populations among the RS components...
December 20, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29245583/review-of-the-genus-i-trichiotes-i-casey-coleoptera-tenebrionidae-pimeliinae-edrotini-with-the-description-of-a-new-species-and-a-preliminary-checklist-of-the-tenebrionidae-from-cuatroci%C3%A3-negas-mexico
#4
Christopher C Wirth, Aaron D Smith
The rarely collected, previously monotypic, darkling beetle genus Trichiotes is reviewed, including new state and country records for T. seriatus Casey, 1907 and a new species, Trichiotes lightfooti Wirth & Smith, n. sp., is described from the Cuatrociénegas Protected Area in Coahuila, Mexico. Differences in stridulatory structures between the species are discussed and the occurrence of a waxy, extracuticular pruinescence is reported for Trichiotes. A species key to the genus is provided and a checklist of the known Tenebrionidae from the Cuatrociénegas region is presented...
November 14, 2017: Zootaxa
https://www.readbyqxmd.com/read/29222451/alternate-partial-root-zone-drip-irrigation-improves-water-and-nitrogen-use-efficiencies-of-sweet-waxy-maize-with-nitrogen-fertigation
#5
Fengbei Fu, Fusheng Li, Shaozhong Kang
Alternate partial root-zone drip irrigation (ADI) or fertigation has favorable effect on crop water- and nitrogen- use efficiencies (WUE and NUE). However, the advantage of combined application of ADI and nitrogen fertigation on crop WUE and NUE remains unclear. A pot experiment was conducted to investigate the impact of three irrigation methods (CDI conventional drip irrigation (both halves of pot irrigated), ADI (both halves of pot alternatively irrigated) and FDI fixed partial root-zone drip irrigation (fixed half of pot irrigated)) and five nitrogen treatments (F0 no N supplied, F1-F4 0...
December 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29200772/sclerema-neonatorum-in-a-full-term-infant-showing-favorable-prognosis
#6
Seh Hyun Park, Soo-Chan Kim
Sclerema neonatorum (SN) is a rare disease characterized by firm, indurated, waxy skin lesions extending throughout the body, sparing the fat-free soles, palms, and genitalia. The prognosis of SN is generally very poor, with a high fatality rate. We report the case of a full-term infant with delayed onset of SN showing good prognosis. A 4-month-old Korean male infant presented with diffuse waxy, sclerotic skin lesions on the whole body, sparing the face, nipples, and genital area, which began developing at 2 months of age...
December 2017: Annals of Dermatology
https://www.readbyqxmd.com/read/29146361/rheological-characterization-of-gum-and-starch-nanoparticle-blends
#7
Mariana Perez Herrera, Thava Vasanthan
Commercial interest on the application of starch nanoparticles (SNP) in food is rapidly growing. Since gums are commonly used in food processing for their texturizing functionality, it is important to understand the influence of SNP on gum rheology. λ-Carrageenan and xanthan gum were selected in this study due to their wide range of applications in food systems. SNP isolated from waxy (0% amylose) and high amylose maize (71% amylose) were used. Binary blends consisting of 0.5% (w/v) gum and different concentrations of SNP were prepared and their flow behaviors evaluated using a rheometer...
March 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29146345/effect-of-high-pressure-processing-on-colour-phytochemical-contents-and-antioxidant-activities-of-purple-waxy-corn-zea-mays-l-var-ceratina-kernels
#8
Kawinchaya Saikaew, Kamol Lertrat, Mutita Meenune, Ratchada Tangwongchai
High-pressure processing (HPP) at 250-700 MPa for 30-45 min affects the colour parameters, phytochemical contents and antioxidant activities of purple waxy corn kernels (p < 0.05). The higher pressure-level, the lower L(∗), a(∗), b(∗), C(∗) and h(o) (p < 0.05). However, pressure-treated kernels at 700 MPa showed a similar colour profile to steam-treated kernels. HPP caused a loss in the total phenolic, flavonoid, and anthocyanin contents and antioxidant activities. The pressure-treated kernels had a higher phytochemical content than the steam-treated kernels...
March 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29137759/ultrasonic-assisted-production-of-starch-nanoparticles-structural-characterization-and-mechanism-of-disintegration
#9
Sami Boufi, Sihem Bel Haaj, Albert Magnin, Frédéric Pignon, Marianne Impéror-Clerc, Gérard Mortha
In this paper, the disintegration of starch (waxy and standard starch) granules into nanosized particles under the sole effect of high power ultrasonication treatment in water/isopropanol is investigated, by using wide methods of analysis. The present work aims at a fully characterization of the starch nanoparticles produced by ultrasonication, in terms of size, morphology and structural properties, and the proposition of a possible mechanism explaining the top-down generation of starch nanoparticles (SNPs) via high intensity ultrasonication...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29133086/role-of-entanglement-concentration-in-dynamic-viscoelasticity-and-film-forming-property-of-cereal-starches
#10
Li Guo
Entanglement concentration (ce, w/v) means the onset of overlap and interpenetration of random-coil chains in a macromolecule solution. The effects of ce on the dynamic viscoelasticity and film-forming property of cereal starches were investigated. The results showed that ce affected significantly the ratio of crystalline to amorphous regions of normal rice starch, waxy rice starch, normal maize starch and wheat starch because the absorbance ratio (1047cm(-1)/1022cm(-1)) increased more obviously at concentrations increasing from 0...
November 10, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29119028/erosive-pustular-dermatosis-of-the-scalp-with-urate-like-crystals
#11
Patrick O Emanuel, Sharad P Paul
Follicular urate-like crystals were first described in Necrotizing Infundibular Crystalline Folliculitis (NICF), a rare cutaneous disorder with multiple waxy folliculocentric papules. Similar crystal accumulation may be seen within follicular infundibulae as an incidental finding. We describe a case showing identical crystals occurring within the horn-like crusts of a patient with erosive pustular dermatosis of the scalp (EPDS), a condition which due to its presentation can often be mistaken for nonmelanoma skin cancer...
2017: Case Reports in Dermatological Medicine
https://www.readbyqxmd.com/read/29108936/phylogenetic-relationships-of-deprea-new-insights-into-the-evolutionary-history-of-physaloid-groups
#12
Rocío Deanna, Gloria E Barboza, Carolina Carrizo García
Deprea is the genus with the second highest species richness in tribe Physalideae (Solanaceae) and comprises 50 species that are mainly distributed in the Andes of South America. The taxonomy of Deprea has been unstable after controversial hypotheses about its position and circumscription. Additionally, biogeographical inferences are only based on observations of the restricted area of distribution of some species and no ancestral area estimation have been performed. Here, we present a phylogenetic analysis and an ancestral area reconstruction of Deprea in order to establish its circumscription, resolve its position within Physalideae, and reconstruct its biogeographical history...
November 10, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/29103487/preparation-and-characterization-of-starch-nanocrystals-combining-ball-milling-with-acid-hydrolysis
#13
Limin Dai, Changwei Li, Jun Zhang, Fang Cheng
Waxy maize starch was mechanically treated with a planetary ball mill. X-ray diffraction analysis was employed to determine the optimal ball milling time. After ball milling, the pretreated starch was hydrolyzed with H2SO4. The hydrolysates were obtained and their relative crystallinity, morphology, and particle size were estimated by X-ray diffraction analysis, atomic force microscopy, and nanoparticle size analyzer, respectively. The results revealed that it is possible to obtain starch nanocrystals (SNCs) after a combination of ball milling and 3days of H2SO4 hydrolysis with a yield of 19...
January 15, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29103349/determination-of-surface-energies-of-hot-melt-extruded-sugar-starch-pellets
#14
Chi-Wah Yeung, Hubert Rein
Hot-melt extruded sugar-starch pellets are an alternative for commercial sugar spheres, but their coating properties remain to be studied. Both the European Pharmcopoeia 8.6 and the United States Pharmacopoeia 40 specify the composition of sugar-starch pellets without giving requirements for the manufacturing process. Due to various fabrication techniques, the physicochemical properties of pellets may differ. Therefore, the adhesion energies of three coating dispersions (sustained, enteric and immediate release) on different types of pellets were investigated...
November 6, 2017: Pharmaceutical Development and Technology
https://www.readbyqxmd.com/read/29093331/germinated-waxy-black-rice-ameliorates-hyperglycemia-and-dyslipidemia-in-streptozotocin-induced-diabetic-rats
#15
Hye Won Kang, Won-Chul Lim, Jin-Kyu Lee, Jin-Nyoung Ho, Eun-Jeong Lim, Hong-Yon Cho
This study aimed to examine the anti-diabetic effect of germinated waxy black rice (GWBR) using streptozotocin (STZ)-induced diabetic rats. In the diabetic rats, GWBR supplementation for 8 weeks reduced plasma blood glucose concentrations, improved glucose clearance and prevented diabetes-induced weight loss. Rats with STZ-induced diabetes who received GWBR supplementation exhibited decreased expression of sodium-dependent glucose transporter 1 (SGLT1) and glucose transporter (GLUT) 2 genes and proteins in the small intestine via decreases in hepatocyte nuclear factor (HNF)-1α, HNF-1β, and HNF-4α, transcriptional factors that are involved in the regulation of SGLT1 and GLUT2, compared with the rats with STZ-induced diabetes that did not receive GWBR supplements...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29066274/self-healing-juvenile-cutaneous-mucinosis-clinical-and-histopathologic-findings-of-nine-cases-the-relevance-of-long-term-follow-up
#16
Isabelle Luchsinger, Jérôme Coulombe, Franco Rongioletti, Marc Haspeslagh, Anne Dompmartin, Isabelle Melki, Rawane Dagher, Brigitte Bader-Meunier, Sylvie Fraitag, Christine Bodemer
BACKGROUND: Self-healing juvenile cutaneous mucinosis (SHJCM) is a rare disorder and the pathogenesis and long-term prognosis are unknown. OBJECTIVES: To elucidate the clinical and histopathologic characteristics, pathogenesis and outcome in patients with SHJCM. METHODS: Retrospective study of 9 patients with SHCJM. To complement initial findings, data collection forms were sent to the referring physicians. RESULTS: All patients had an acute onset of firm nodules...
October 21, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/29037674/structure-of-pyrodextrin-in-relation-to-its-retrogradation-properties
#17
Xiaoxian Han, Ji Kang, Yanjie Bai, Meng Xue, Yong-Cheng Shi
Pyrodextrins were prepared by heating waxy maize starch at 170°C and pH 3.0 for 0.5, 1, 2, 3 and 4h. Structural changes of pyrodextrins were determined by gel permeation chromatography and (1)H NMR. Gelatinization and retrogradation of pyrodextrins were measured by differential scanning calorimetry. The water solubility of pyrodextrins increased from 48.9 to 99.4% as heating time increased from 0.5 to 4h. The molecular size, melting enthalpy of pyrodextrin, and the degree of retrogradation decreased as pyrodextrin solubility increased...
March 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29037668/measurement-and-characterization-of-external-oil-in-the-fried-waxy-maize-starch-granules-using-atr-ftir-and-xrd
#18
Long Chen, Yaoqi Tian, Binghua Sun, Canxin Cai, Rongrong Ma, Zhengyu Jin
Concerns regarding increased dietary oil uptake have prompted efforts to investigate the oil absorption and distribution in fried starchy foods. In the present study, attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy, together with a chloroform-methanol method, was used to analyze the external and internal oil contents in fried starchy samples. The micromorphology of fried starchy samples was further investigated using scanning electron microscope (SEM), polarized light microscope (PLM) and confocal laser scanning microscopy (CLSM)...
March 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29037335/-catatonia-and-delirium-syndromes-that-may-converge-in-the-neuropsychiatric-patient
#19
Andrés Felipe Pérez-González, Mariana Espinola-Nadurille, Jesús Ramírez-Bermúdez
INTRODUCTION: Catatonia and delirium are two different and independent syndromes. Catatonia is a psychomotor syndrome associated with a variety of diseases of different medical causes and is characterised by lack of activity, induction of passive postures against gravity, opposition or absence of response to external stimuli, waxy flexibility, stereotypies, mannerisms and echophenomena. Delirium is characterised by consciousness and cognitive alterations, mainly attention and orientation and usually of acute onset, which tend to fluctuate during the day and with evidence that the alteration is a direct physiological consequence of a disease, intoxication or substance withdrawal...
October 2017: Revista Colombiana de Psiquiatría
https://www.readbyqxmd.com/read/29030441/methanogenic-paraffin-biodegradation-alkylsuccinate-synthase-gene-quantification-and-dicarboxylic-acid-production
#20
Lisa K Oberding, Lisa M Gieg
Paraffinic n-alkanes (> C17) that are solid at ambient temperature comprise a large fraction of many crude oils. The comparatively low water solubility and reactivity of these long-chain alkanes can lead to their persistence in the environment following fuel spills, and pose serious problems for crude oil recovery operations by clogging oil production wells. However, the degradation of waxy paraffins under the anoxic conditions characterizing contaminated groundwater environments and deep subsurface energy reservoirs is poorly understood...
October 13, 2017: Applied and Environmental Microbiology
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