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https://www.readbyqxmd.com/read/28330281/evaluation-of-bioactive-secondary-metabolites-from-endophytic-fungus-pestalotiopsis-neglecta-bab-5510-isolated-from-leaves-of-cupressus-torulosa-d-don
#1
Deeksha Sharma, Avijit Pramanik, Pavan Kumar Agrawal
Six endophytic fungi were isolated from Cupressus torulosa D.Don and identified phenotypically and genotypically. The fungal cultures were further grown and the culture was extracted by two organic solvents methanol and ethyl acetate. The screening was carried out using the agar well diffusion method against human pathogen such as Escherichia coli, Salmonella typhimurium, Bacillus subtilis and Staphylococcus aureus. Isolated strain of Pestalotiopsis sp. was showing prominent antibacterial activity. The crude methanol and ethyl acetate extract of Pestalotiopsis sp...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330099/thermomyces-lanuginosus-lipase-catalyzed-synthesis-of-natural-flavor-esters-in-a-continuous-flow-microreactor
#2
Ahmad Mohammed Gumel, M S M Annuar
Enzymatic catalysis is considered to be among the most environmental friendly processes for the synthesis of fine chemicals. In this study, lipase from Thermomyces lanuginosus (Lecitase Ultra™) was used to catalyze the synthesis of flavor esters, i.e., methyl butanoate and methyl benzoate by esterification of the acids with methanol in a microfluidic system. Maximum reaction rates of 195 and 115 mM min(-1) corresponding to catalytic efficiencies (k cat/K M) of 0.30 and 0.24 min(-1) mM(-1) as well as yield conversion of 54 and 41 % were observed in methyl butanoate and methyl benzoate synthesis, respectively...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330041/retinal-tractography-influence-of-diffusion-acquisition-ocular-laterality-and-ocular-dominance-in-healthy-subjects
#3
Clément Jean, Arnaud Attyé, Sylvie Grand, Augustin Lecler, Christophe Chiquet, Florent Aptel, Laurent Lamalle, Alexandre Krainik
PURPOSE: Exploration of the human retina has never been described with MRI tractography, supposedly because of ocular movement-related artifacts and imaging distortions with EPI diffusion acquisition. In this work, we used track-weighting imaging to assess retinal fascicles. Diffusion acquisition parameters influence was studied and the relationship between variability and ocular laterality and ocular dominance was explored. MATERIALS AND METHODS: Twenty healthy subjects underwent MRI, with retinal tractography calculated with the constrained spherical deconvolution model...
March 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28330019/facial-nerve-tractography-a-new-tool-to-detect-perineural-invasion-in-parotid-cancers
#4
René-Charles Rouchy, Arnaud Attyé, Irène Troprès, Maud Medici, Adrian Kastler, Christian Righini, Alexandre Krainik
PURPOSE: To determine whether magnetic resonance (MR) tractography of facial nerve (VIIn) is useful to detect perineural invasion in case of parotid cancers. MATERIALS AND METHODS: Thirty patients, aged 18 or over, were enrolled in this prospective study between December 2013 and March 2016 (IRB 5891), with a diagnosis of parotid tumors (15 malignant, 15 benign). They have undergone preoperative MR scans (3.0-T) before surgical management. The parameters of the diffusion-weighted (DW) sequence were b-value of 1000s/mm(2); 32 directions; voxel size: 2mm isotropic; scan time: 9' The post-processing generates whole-neck constrained spherical deconvolution (CSD)-based tractography data and super-resolution track-weighted imaging (TWI) technique...
March 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28329953/imaging-feature-in-pres-syndrome-report-of-6-cases
#5
H El Mhabrech, S Karma, F Jbeli, M Dakkem, A Kraiem, C Hafsa
OBJECTIVES: Posterior reversible encephalopathy syndrome (PRES) is a rare syndrome. The pathophysiology is poorly understood. Computed tomography (CT) and magnetic resonance imaging (MRI) findings are characteristic of the diagnosis and diffusion weighted image has been also suggested having a prognostic value. We report this unusual neurologic complication of peripartumin except any pre-existent pathology of the pregnancy. MATERIEL AND METHODS: CT, MR findings and relevant clinical data of the patients were retrospectively reviewed on 5 cases between 2011 and 2012 in our radiologic department...
March 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28329842/magnetic-resonance-imaging-reveals-progressive-brain-injury-in-rats-acutely-intoxicated-with-diisopropylfluorophosphate
#6
Brad A Hobson, Sílvia Sisó, Douglas J Rowland, Danielle J Harvey, Donald A Bruun, Joel R Garbow, Pamela J Lein
Acute intoxication with organophosphates (OPs) can trigger seizures that progress to status epilepticus, and survivors often exhibit chronic neuropathology, cognitive impairment, affective disorders and/or electroencephalographic abnormalities. Understanding how acute injury transitions to persistent neurological sequelae is critical to developing medical countermeasures for mitigating damage following OP-induced seizures. Here, we used in vivo magnetic resonance imaging (MRI) to monitor the spatiotemporal patterns of neuropathology for one month after acute intoxication with diisopropylfluorophosphate (DFP)...
March 7, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28329722/antibacterial-properties-of-amino-acid-functionalized-silver-nanoparticles-decorated-on-graphene-oxide-sheets
#7
Kumudini Chandraker, Rekha Nagwanshi, S K Jadhav, Kallol K Ghosh, Manmohan L Satnami
Graphene oxide (GO) sheets decorated with amino acid L-cysteine (L-cys) functionalized silver nanoparticles (GO-L-cys-Ag) was synthesized by AgNO3, trisodium citrate, and NaBH4. GO-L-cys-Ag nanocomposite was characterized by transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectra, ultraviolet-visible (UV-vis) absorption spectra, which demonstrated that a diameter of L-cys-AgNPs compactly deposited on GO. Antibacterial activity tests of GO-L-cys-Ag nanocomposite were carried out using Escherichia coli MTCC 1687 and Staphylococcus aureus MTCC 3160 as model strains of Gram-negative and Gram-positive bacteria, respectively...
March 16, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28329678/human-rad52-captures-and-holds-dna-strands-increases-dna-flexibility-and-prevents-melting-of-duplex-dna-implications-for-dna-recombination
#8
Ineke Brouwer, Hongshan Zhang, Andrea Candelli, Davide Normanno, Erwin J G Peterman, Gijs J L Wuite, Mauro Modesti
Human RAD52 promotes annealing of complementary single-stranded DNA (ssDNA). In-depth knowledge of RAD52-DNA interaction is required to understand how its activity is integrated in DNA repair processes. Here, we visualize individual fluorescent RAD52 complexes interacting with single DNA molecules. The interaction with ssDNA is rapid, static, and tight, where ssDNA appears to wrap around RAD52 complexes that promote intra-molecular bridging. With double-stranded DNA (dsDNA), interaction is slower, weaker, and often diffusive...
March 21, 2017: Cell Reports
https://www.readbyqxmd.com/read/28329585/report-of-rare-case-of-dermatofibrosarcoma-protuberans-in-the-buccal-mucosa-review-of-diagnostic-histopathological-and-immunohistochemical-criteria
#9
Amanda Katarinny Goes Gonzaga, Angélica Lopes Cordeiro Mandú, Alexandre Oliveira Sales, Ana Miryam Costa Medeiros, Rodrigo Rodrigues Rodrigues, Patrícia Teixeira Oliveira, Adriano Rocha Germano, Éricka Janine Dantas Silveira
Dermatofibrosarcoma protuberans (DFSP) is an uncommon intermediate-grade soft tissue sarcoma. The tumor is found preferentially on the trunk, whereas the head and neck region are affected in only 10% to 15% of cases. We report the case of a 44-year-old woman with a 5-month history of an asymptomatic, firm, yellow nodule in the mucosa of the right cheek measuring 2.5 cm. The clinical diagnosis was lipoma and an excisional biopsy was obtained. Histopathological analysis revealed a proliferation of spindle-shaped mesenchymal cells arranged in interlacing fascicles amidst fibrous stroma...
October 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329566/breast-nodularity-and-ulceration-diffuse-dermal-angiomatosis-a-corticosteroid-responsive-disease
#10
J D Ho, D Wolpowitz, T J Phillips
Diffuse dermal angiomatosis of the breast (DDAB) is an uncommon ulcerative angiomatosis, which occurs in middle aged women with large pendulous breasts, a history of cigarette smoking, and risk factors for atherosclerosis. Based on its rarity, no well-defined therapeutic regimen has been elucidated. We report a case of DDAB in a woman with no history of smoking or radiographic evidence of occluded vasculature who presented with ulceration and pain-associated breast nodularity. She had a complete reproducible response to oral corticosteroids...
November 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329553/primary-cutaneous-marginal-zone-lymphoma
#11
Joshua Farhadian, Vtaly Terushkin, Shane A Meehan, Jo-Ann Latkowski
Primary cutaneous B cell lymphomas (PCBCL) are thesecond most common type of primary cutaneouslymphoma. The three main types of PCBCL areprimary cutaneous marginal-zone lymphoma(PCMZL), primary cutaneous follicle-centerlymphoma, and primary cutaneous diffuse largeB-cell lymphoma, leg type. PCMZL has an indolentcourse with a five-year survival rate approaching99%. Lesions most often present on the trunk or armas erythematous-to-violaceous papules, plaques, ornodules. Approximately one-half of patients havesolitary skin lesions...
December 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329552/diffuse-sebaceous-gland-hyperplasia
#12
Julia Gittler, Lauren Penn, Vitaly Terushkin, Nooshin Brinster
Diffuse sebaceous-gland hyperplasia is a rarevariant of sebaceous-gland hyperplasia that isdistinct from the well-known circumscribed type.The term presenile sebaceous hyperplasia has beenutilized to describe this entity that is distinguishedby specific features, which include confluence oflesions that results in the formation of large plaqueson the face, the sparing of periorificial regions, andhighly functional glandular hyperplasia that resultsin excessive sebaceous secretion. We present a43-year-old woman with monomorphous, skincoloredand yellow, smooth 1- to-3-mm papules,some with central umbilication, that spare theperiorificial zones...
December 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329544/white-fibrous-papulosis-of-the-neck
#13
Carmen Castilla, Randie H Kim, Shane A Meehan, Rhonda Pomerantz
White fibrous papulosis of the neck is a rare diagnosisthat typically presents with white, 2-to-3-mmpapules on the posterior aspect of the neck. Wepresent an elderly woman with diffuse involvementon her abdomen and back.
December 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329514/disseminated-punctate-keratoderma-a-rare-case-report-and-review-of-the-literature
#14
Eseosa Asemota, Alina Markova, Jonathan Ho, Michael K Lichtman
We report a rare case of a 53-year-old womanpresenting with diffuse, late-onset disseminatedhyperkeratotic papules. Biopsy showed massivehyperkeratosis overlying a crateriform epidermaldepression and hypergranulosis with mild epidermalhyperplasia. There was no parakeratosis, cornoidlamella, or dyskeratosis. Based on the clinical findingsand histopathological features, a diagnosis ofdisseminated punctate keratoderma was made. Thisis a rare subtype of palmoplantar keratoderma, whichhas a putative increased risk of malignancy...
March 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329471/first-report-of-mesalamine-5-aminosalicylic-acid-as-the-causative-agent-in-a-case-of-acute-generalized-exanthamous-pustulosis
#15
Erin Rocci, Kelly Park, Kelli Hutchens, Laura Winterfield
Acute generalized exanthamous pustulosis (AGEP)is a rare eruption of non-follicular sterile pustuleson a diffuse background of erythema and edema,commonly associated with fever and leukocytosis.Antibiotics are implicated in most cases; however,other drugs have been reported to cause AGEP. Wereport a case of a 73-year-old man with a historyof ulcerative colitis who presented with a diffusepustular rash, renal failure, elevated liver functiontests, and leukocytosis with neutrophilia. A week priorto admission, the patient was started on mesalamineto treat colitis...
January 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329462/preoperative-use-of-ct-angiography-in-infants-with-coarctation-of-the-aorta
#16
Kirsten Rose-Felker, Joshua D Robinson, Carl L Backer, Cynthia K Rigsby, Osama M Eltayeb, Michael C Mongé, Karen Rychlik, Christina L Sammet, Jeffrey G Gossett
BACKGROUND: Computed tomographic angiography (CTA) and echocardiography (echo) are used preoperatively in coarctation of the aorta to define arch hypoplasia and great vessel branching. We sought to determine differences in quantitative measurements, as well as surgical utility, between modalities. METHODS: Infants (less than six months) with both CTA and echo prior to coarctation repair from 2004 to 2013 were included. Measurements were compared and correlated with surgical approach...
March 2017: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/28329104/vascular-cerebral-damage-in-frail-older-adults-the-amimage-study
#17
José Alberto Avila-Funes, Amandine Pelletier, Céline Meillon, Gwénaëlle Catheline, Olivier Periot, Irene Trevin O-Frenk, Magali Gonzalez-Colaço, Jean-François Dartigues, Karine Pérès, Michèle Allard, Bixente Dilharreguy, Hélène Amieva
Background: Frailty has been associated with increased risk of adverse-health related outcomes including cognitive impairment. However, little is know about the pathogenesis relating frailty to cognitive decline. Therefore, the main objective of this study was to investigate the association between vascular cerebral damage and frailty. Methods: Cross-sectional study involving 176 community-dwelling participants aged 67-86 years, participating in the AMImage Study, an ancillary neuro-imaging project of the AMI cohort, a French prospective cohort including older farmers living in rural areas...
January 21, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28329096/diffuse-white-matter-signal-abnormalities-on-magnetic-resonance-imaging-are-associated-with-human-immunodeficiency-virus-type-1-viral-escape-in-the-central-nervous-system-among-patients-with-neurological-symptoms
#18
Ruthiran Kugathasan, Dami A Collier, Lewis J Haddow, Kate El Bouzidi, Simon G Edwards, Jonathan D Cartledge, Robert F Miller, Ravindra K Gupta
Background.: Human immunodeficiency virus type 1 (HIV-1) can replicate independently in extravascular compartments such as the central nervous system, resulting in either cerebrospinal fluid (CSF) discordance (viral load [VL] in CSF 0.5 log10 copies HIV-1 RNA greater than plasma VL) or escape (detection of HIV VL >50 copies/mL in CSF in patients with suppressed plasma VL <50 copies/mL). Both discordance and escape may be associated with neurological symptoms. We explored risk factors for CSF discordance and escape in patients presenting with diverse neurological problems...
March 13, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28329054/whole-heart-detailed-and-quantitative-anatomy-myofibre-structure-and-vasculature-from-x-ray-phase-contrast-synchrotron-radiation-based-micro-computed-tomography
#19
Anna Gonzalez-Tendero, Chong Zhang, Vedrana Balicevic, Rubén Cárdenes, Sven Loncaric, Constantine Butakoff, Bruno Paun, Anne Bonnin, Patricia Garcia-Cañadilla, Emma Muñoz-Moreno, Eduard Gratacós, Fatima Crispi, Bart Bijnens
Background: While individual cardiac myocytes only have a limited ability to shorten, the heart efficiently pumps a large volume-fraction thanks to a cell organization in a complex 3D fibre structure. Subclinical subtle cardiac structural remodelling is often present before symptoms arise. Understanding and early detection of these subtle changes is crucial for diagnosis and prevention. Additionally, personalized computational modelling requires knowledge on the multi-scale structure of the whole heart and vessels...
March 15, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28329007/highly-efficient-photocatalytic-degradation-of-methylene-blue-by-popd-tio2-nanocomposite
#20
Chuanxi Yang, Ming Zhang, Wenping Dong, Guanwei Cui, Zongming Ren, Weiliang Wang
The poly-o-phenylenediamine (PoPD)/TiO2 nanocomposite was successfully synthesized via 'in situ' oxidative polymerization method. The modified photocatalysts were characterized by BET, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier-transform infrarad spectra (FT-IR), thermogravimrtic analysis (TGA), X-ray photoelectron spectroscopy (XPS), Ultraviolet-visible diffuse reflectance spectrum (UV-Vis DRS) and Photocurrent Test. The results showed that the PoPD exists on the surface of TiO2, the presence of PoPD does not impact on the lattice structure and grain size of TiO2, and the presence of PoPD enhances the visible response and photoelectric property...
2017: PloS One
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