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https://www.readbyqxmd.com/read/29692093/-effects-of-enhanced-uv-b-radiation-on-photosynthetic-physiology-and-chloroplast-ultrastructure-of-phragmites-australis
#1
Run Chu, Nian Lai Chen
The effects of different intensities of UV-B radiation on photosynthetic characteristics, photosynthetic pigment content and chloroplast ultrastructure of Phragmites australis were studied in this paper. The results showed that enhanced UV-B radiation significantly reduced the net photosynthetic rate, stomatal conductance and transpiration rate, and the degree of degradation increased with the increasing irradiation intensity. The intercellular CO2 content increased and the photosynthetic efficiency decreased significantly compared with the control...
November 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29691903/relation-between-respiratory-activity-and-sperm-parameters-in-boar-spermatozoa-cryopreserved-with-alpha-tocopherol-and-selected-by-sephadex
#2
M M Satorre, E Breininger, P D Cetica, M Córdoba
Our aim was to evaluate the effect of Sephadex filtration on respiratory activity of porcine spermatozoa and its relation with quality and functional sperm parameters. Samples were evaluated regarding oxygen uptake and sperm parameters: motility, plasma and acrosome membrane integrity, capacitation and acrosome reaction induction in vitro, plasma membrane functionality, determined by the hypo-osmotic swelling test (HOST), and lipid peroxidation assessed by thiobarbituric acid assay. Sephadex filtration improved all routine quality parameters (motility, plasma and acrosome membrane integrity) and functional parameters (HOST, in vitro capacitation and true acrosome reaction levels) and produced a significant decrease in cryocapacitation and lipid peroxidation...
April 24, 2018: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/29691783/optimization-of-fixative-solution-for-retinal-morphology-a-comparison-with-davidson-s-fixative-and-other-fixation-solutions
#3
Kazuhiro Tokuda, Byron Baron, Yasuhiro Kuramitsu, Takao Kitagawa, Nobuko Tokuda, Naoyuki Morishige, Masaaki Kobayashi, Kazuhiro Kimura, Kazuyuki Nakamura, Koh-Hei Sonoda
PURPOSE: Numerous fixative solutions are available but many are not amenable to the histomorphological preservation of retinae. The investigators specifically focused on retinal histological studies, which rather than 4% formaldehyde (FA), often use Davidson's fixative. However the latter has its limitations. The purpose of this study was to produce a new fixative which maintains retinae closer to the in vivo conditions. STUDY DESIGN: Experimental design. METHODS: Four fixative formulations (4% paraformaldehyde, Davidson's fixative, modified Davidson's fixative and an in-house fixative - TB-Fix) were tested on retinae and the outcomes on histomorphology and immunohistochemical staining for selected antigenic markers was compared...
April 24, 2018: Japanese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29691725/preparation-and-application-of-melamine-cross-linked-poly-ammonium-as-shale-inhibitor
#4
Li Zhang, Tiehu Li, Lei Huang, Zhengqin Ye, Zhongbin Ye, Xin Yan, Lili Li, Qiang Deng, Gang Chen, Jie Zhang, Zhifang Zhang
In this paper, a series of poly ammonium shale inhibitors were prepared from diethylamine, epichlorohydrin, and melamine (DEM) and their inhibition to shale were evaluated by bentonite linear expansion test, anti-swelling experiments, and mud ball experiments. Additionally, other properties of drilling fluid treated by poly ammonium were evaluated. Anti-swelling results showed that anti-swelling rate of DEM-8 reaches up to 97.8% when its concentration reaches to 0.8%. Mud ball experiment and drilling fluid evaluation showed DEM-8 has strong inhibitive capability to bentonite hydration swelling and controlling the particle size of bentonite in a large scale...
April 25, 2018: Chemistry Central Journal
https://www.readbyqxmd.com/read/29691361/salvianolic-acid-b-suppresses-inflammatory-mediator-levels-by-downregulating-nf-%C3%AE%C2%BAb-in-a-rat-model-of-rheumatoid-arthritis
#5
Zeng-Bing Xia, Yong-Jian Yuan, Qiang-Hua Zhang, Heng Li, Ji-Lin Dai, Ji-Kang Min
BACKGROUND Salvianolic acid B (SB) is a major active phyto-component of the plant Radix Salvia miltiorrhiza, which is traditionally used to treat joint pain and arthritis. The present study examined the anti-rheumatoid arthritis efficacy of SB on collagen-induced rheumatoid arthritis (CIA) in a rat model. MATERIAL AND METHODS Forty-eight rats were divided into 4 groups: Control rats treated with saline (Group I), rats subjected to CIA induction by intradermal injection of bovine collagen II type at the tail (Group II), and rats subjected to CIA and supplemented with either 20 or 40 mg/kg of SB for 28 days (group III or IV)...
April 25, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29691010/characterization-and-microbiological-evaluation-of-chitosan-alginate-microspheres-for-cefixime-vaginal-administration
#6
F Maestrelli, M Jug, M Cirri, I Kosalec, P Mura
Chitosan-alginate microspheres (MS) were developed for cefixime vaginal administration, to overcome problems associated with its oral administration. The effect of increasing drug-loading amount, by keeping the chitosan-alginate content constant, was investigated. Mucoadhesion studies indicated that all formulations assured in situ permanence longer than 2 h. Entrapment efficiency increased with drug loading concentration in the starting solution, reaching a plateau at 30 mg/mL indicative of the achievement of an optimal drug-to-polymer ratio...
July 15, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29691000/thermosensitive-and-photocrosslinkable-hydroxypropyl-chitin-based-hydrogels-for-biomedical-applications
#7
Meng Yuan, Bo Bi, Jiachang Huang, Renxi Zhuo, Xulin Jiang
In situ forming injectable hydrogels based on thermosensitive polymers are being investigated for tissue engineering applications. However, the major limitations of this kind of hydrogels are low gel stability and weak mechanical properties under physiological conditions. Here, thermosensitive hydroxypropyl chitin (HPCH) was synthesized homogenously and subsequently functionalized with photocrosslinkable methacrylate groups via glycidyl methacrylate to generate glycidyl methacrylate-modified HPCH (GM-HPCH)...
July 15, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29690707/-investigation-on-the-prevalence-of-hyperuricemia-among-young-students
#8
L F Xie, W Zhao, Y C Zhong, D L Wang, X W Zhang
Objective: To investigate the prevalence of hyperuricemia and the distribution of serum uric acid in young students. Methods: Determination of 14 214 cases of freshmen, 3 072 cases of the graduate and 6 804 cases of school staff in 2015-2016 from one University of Beijing with uric acid (UA) enzymatic method, hyperuricemia criteria for male UA >420 μmol/L, female UA >357 μmol/L, were grouped according to age. From freshmen in 2016 randomly selected 1 782 cases men and 1 175 cases women through the questionnaire to investigate the prevalence of gout...
April 3, 2018: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29690540/mesenchylmal-stem-cell-culture-on-poly-n-isopropylacrylamide-hydrogel-with-repeated-thermo-stimulation
#9
Aya Mizutani Akimoto, Erika Hasuike Niitsu, Kenichi Nagase, Teruo Okano, Hideko Kanazawa, Ryo Yoshida
We prepared thermoresponsive hydrogels by mixing poly( N -isopropylacrylamide) (PNIPAAm) derivatives as the main chain components, octa-arm polyethylene glycol (PEG) as a crosslinker, and the Arg-Gly-Asp-Ser (RGDS) peptides as cell adhesion units. Human bone marrow-derived mesenchymal stem cells (hbmMSCs) were cultured on the hydrogels. The PNIPAAm gel prepared by the post-crosslinking gelation method was revealed to be cytocompatible and showed temperature-dependent changes in mechanical properties. Repeated changes in the swelling ratio of the PNIPAAm gel affected the shape of the hbmMSCs...
April 21, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29690327/nematodes-from-galls-on-myrtaceae-xi-descriptions-of-five-new-species-of-fergusobia-from-australia
#10
Kerrie A Davies, Weimin Ye, Gary S Taylor, Sonja Scheffer, F Bartholomaeus, Robin M Giblin-Davis
Five new species of Fergusobia are described. Fergusobia janetae Davies n. sp. is characterized by the combination of an arcuate to straight, spindle-shaped parthenogenetic female with a relatively small oesophageal gland, an extensile uterus and a conoid tail, an arcuate infective female with a bluntly rounded tail tip, and a C-shaped male with an arcuate to angular spicule and bursa arising at more than 90% of body length. Fergusobia robustae Davies n. sp. is characterized by the combination of a small, C-shaped parthenogenetic female with a short cylindroid tail with a broadly rounded tip; an arcuate to C-shaped, relatively broad, infective female with a tail tip that is almost hemispherical; and an arcuate male with a strong angular spicule and a bursa arising at 30-40% of body length...
March 20, 2018: Zootaxa
https://www.readbyqxmd.com/read/29689958/the-advertisement-call-of-proceratophrys-branti-brand%C3%A3-o-caramaschi-vaz-silva-campos-2013-amphibia-anura-odontophrynidae
#11
Sheila Pereira De Andrade, Cezar Filho Rocha, Wilian Vaz-Silva
Proceratophrys Miranda-Ribeiro, 1920 currently comprises 40 species (Frost 2017) of which 15 are allocated into the Proceratophrys cristiceps species group (sensu Brandão et al. 2013). The species in this group are characterized by the absence of postocular swellings and, except for P. concavitympanum, are found in seasonally open habitats in Brazilian Cerrado and Caatinga morphoclimatic domains (Giaretta et al. 2000; Ávila et al. 2012; Teixeira Jr. et al. 2012; Brandão et al. 2013). Information on advertisement calls is available for 11 species of the group (Eterovick Sazima 1998; Nunes Juncá 2006; Brasileiro et al...
February 15, 2018: Zootaxa
https://www.readbyqxmd.com/read/29689163/heparin-functionalized-injectable-cryogel-with-rapid-shape-recovery-property-for-neovascularization
#12
Inseon Kim, Seunghun S Lee, Sunghoon Bae, Hoyon Lee, Nathaniel S Hwang
Cryogel based scaffolds have high porosity with interconnected macropores that may provide cell compatible microenvironment. In addition, cryogel based scaffolds can be utilized in minimally invasive surgery due to its sponge-like properties, including rapid shape recovery and injectability. Herein, we developed an injectable cryogel by conjugating heparin to gelatin as a carrier for vascular endothelial growth factor (VEGF) and fibroblasts in hindlimb ischemic disease. Our gelatin/heparin cryogel showed gelatin concentration-dependent mechanical properties, swelling ratios, interconnected porosities, and elasticities...
April 24, 2018: Biomacromolecules
https://www.readbyqxmd.com/read/29688953/newly-diagnosed-primary-gum-lymphoma-on-fdg-pet-ct
#13
Jianhua Zhang, Yan Fan, Meng Liu, Qian Li, Rongfu Wang
An 81-year-old woman presented a 2-month history of left upper gum swelling. Biopsy of the lesion revealed the diffuse large B-cell lymphoma. F-FDG PET/CT scan showed the abnormal high uptake at the left upper gum.
April 23, 2018: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29688952/incidental-detection-of-an-unusual-case-of-b-cell-lymphoma-of-the-urachal-remnant-on-18f-fdg-pet-ct
#14
Shelvin Kumar Vadi, Rajender Kumar, Bhagwant Rai Mittal, Harmandeep Singh, Amanjit Bal, Gaurav Prakash, Anish Bhattacharya
Neoplasms arising from the urachus are extremely rare. We present a case of a young woman with mild abdominal pain and a palpable swelling in the mid abdomen with incidental detection of a subumbilical mass. Repeated fine-needle aspiration cytology failed to reveal the true nature of the lesion. F-FDG PET/CT showed tracer uptake in the cranial end of urachal remnant lesion. Core biopsy from the site with maximal FDG uptake turned out to be lymphomatous involvement in urachus, which is extremely rare and previously unreported...
April 23, 2018: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29688508/effects-of-physicochemical-characteristics-of-feed-ingredients-on-the-apparent-total-tract-digestibility-of-energy-dry-matter-and-nutrients-by-growing-pigs
#15
D M D L Navarro, E M A M Bruininx, L de Jong, H H Stein
Effects of physicochemical characteristics of feed ingredients on DE and ME and apparent total tract digestibility (ATTD) of GE, DM, and nutrients were determined in growing pigs using ingredients with different ratios between insoluble dietary fiber (IDF) and soluble dietary fiber (SDF). Eighty growing barrows (BW: 48.41 ± 1.50 kg) were allotted to a randomized complete block design with 10 diets and 8 replicate pigs per diet. Dietary treatments included a corn-based diet, a wheat-based diet, a corn-soybean meal (SBM) diet, and 7 diets based on a mixture of the corn-SBM diet and canola meal, distillers dried grains with solubles (DDGS), corn germ meal (CGM), copra expellers, sugar beet pulp (SBP), synthetic cellulose, or pectin...
April 24, 2018: Journal of Animal Science
https://www.readbyqxmd.com/read/29688492/adverse-events-in-vaccinations-for-travelers-a-1-year-prospective-survey-in-a-travel-clinic-in-germany
#16
Günther Slesak, Ralf Fleck, Helmut Scherbaum, Gunnar Blumenstock, Johannes Schäfer
Background: The study goal was to assess and compare adverse events (AE) of current vaccinations for travelers under 'real-life conditions'. Methods: A prospective observational online questionnaire study was performed from May 2015 till April 2016 in a travel clinic in Germany. Online questionnaire links were sent 1 week after the first vaccination date. Severity was rated on a scale from 1 to 5 (minor to very severe AE). Results: Of 1357 vaccinees 781 (57...
January 1, 2018: Journal of Travel Medicine
https://www.readbyqxmd.com/read/29688202/-multicentre-observational-study-of-phlebodia-600-in-treatment-of-patients-with-ceap-class-c0-c3-chronic-venous-diseases
#17
Iu M Stoĭko, O B Talibov, M N Iashkin, M N Kudykin, S M Belentsov, O V Katel'nitskaia, I A Suchkov, V Iu Tolstikhin, A É Kletskin, K S Sevost'ianova
The purpose of the study was to evaluate efficacy of Diosmin (Phlebodia 600, Innothera, France) in treatment of patients presenting with class C0s-C3 chronic venous diseases (CVD) according to the CEAP classification. Presented herein are the results of a prospective observational study aimed at assessing the outcomes of two-month administration of Phlebodia 600 (600 mg diosmin) in patients suffering from class C0s-C3 CVD according to the CEAP classification. The study comprised a total of 868 patients, including 175 (20...
2018: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
https://www.readbyqxmd.com/read/29688067/unusual-presentation-of-thoracic-disc-herniation
#18
Thomas Zambelis, Andreas Polydorou, Evangelos Anagnostou, Pavlos Angourakis, Sofia Vassilopoulou
We report a 57 year- old man with lateral abdominal wall bulging. MRI showed thoracic disk herniation at the T11-T12 level. Needle electomyogram disclosed acute denervation in paraspinal and abdominal muscles innervated from T11 root. Eight months later the swelling was reduced significantly. Thoracic disc herniations are rare and three similar cases have been described previously.
April 24, 2018: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/29687569/physical-properties-of-a-novel-small-particle-hyaluronic-acid-filler-in-vitro-in-vivo-and-clinical-studies
#19
Sung Yeon Cho, June Whan Park, Hyoseok An, Hyun Ju Ko, Hyuk Kim, Jin Kyu Choi, Sun Young Choi, Sung Min Kim, Eun Jung Ko, Beom Joon Kim
BACKGROUND: Infraorbital region is one of the most important regions that show the signs of aging. In recent years, hyaluronic acid (HA) fillers have been used to correct this region for esthetic treatments. Although HA fillers with various physical properties are used, limited research has been performed to compare their efficacy. OBJECTIVE: We aimed to compare three HA fillers to determine which is the most appropriate filler for the correction of the infraorbital region and evaluate the correction of such by performing a clinical test using CLEVIEL Fine...
April 23, 2018: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/29687337/monodisperse-magnetic-poly-glycidyl-methacrylate-microspheres-for-isolation-of-autoantibodies-with-affinity-for-the-46-kda-form-of-unconventional-myo1c-present-in-autoimmune-patients
#20
Beata A Zasońska, Helena Hlídková, Eduard Petrovský, Severyn Myronovskij, Tetyana Nehrych, Nazar Negrych, Mariya Shorobura, Volodymyr Antonyuk, Rostyslav Stoika, Yuriy Kit, Daniel Horák
Monodisperse nonmagnetic macroporous poly(glycidyl methacrylate) (PGMA) microspheres were synthesized by multistep swelling polymerization of glycidyl methacrylate, ethylene dimethacrylate and 2-[(methoxycarbonyl)methoxy]ethyl methacrylate (MCMEMA). This was followed (a) by ammonolysis to modify the microspheres with amino groups, and (b) by incorporation of iron oxide (γ-Fe2 O3 ) into the pores to render the particles magnetic. The resulting porous and magnetic microspheres were characterized by scanning and transmission electron microscopy (SEM and TEM), atomic absorption and Fourier transform infrared spectroscopy (AAS and FTIR), elemental analysis, vibrating magnetometry, mercury porosimetry and Brunauer-Emmett-Teller adsorption/desorption isotherms...
April 23, 2018: Mikrochimica Acta
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