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https://www.readbyqxmd.com/read/28346347/biosynthesis-of-%C3%AE-glucosidase-inhibitors-by-a-newly-isolated-bacterium-paenibacillus-sp-tku042-and-its-effect-on-reducing-plasma-glucose-in-a-mouse-model
#1
Van Bon Nguyen, Anh Dzung Nguyen, Yao-Haur Kuo, San-Lang Wang
Paenibacillus sp. TKU042, a bacterium isolated from Taiwanese soil, produced α-glucosidase inhibitors (aGIs) in the culture supernatant when commercial nutrient broth (NB) was used as the medium for fermentation. The supernatant of fermented NB (FNB) showed stronger inhibitory activities than acarbose, a commercial anti-diabetic drug. The IC50 and maximum α-glucosidase inhibitory activities (aGIA) of FNB and acarbose against α-glucosidase were 81 μg/mL, 92% and 1395 μg/mL, 63%, respectively. FNB was found to be strongly thermostable, retaining 95% of its relative activity, even after heating at 100 °C for 30 min...
March 25, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28341606/safety-and-efficacy-of-sequential-intracorneal-ring-segment-implantation-and-crosslinking-in-pediatric-keratoconus
#2
Youssef Abdelmassih, Sylvain El-Khoury, Ali Dirani, Rafic Antonios, Ali Fadlallah, Carole G Cherfan, Elias Chelala, Elias F Jarade
PURPOSE: To evaluate the safety and visual outcome of intracorneal ring segment (ICRS) implantation followed by crosslinking in pediatric keratoconus patients. DESIGN: Retrospective interventional case series METHODS: This retrospective study included pediatric patients (≤14 years) with keratoconus and poor corrected distance visual acuity (CDVA) that underwent ICRS implantation and crosslinking (CXL). ICRS were inserted under topical anesthesia after creating a corneal tunnel with an Intralase femtosecond laser...
March 21, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28341395/gonocytes-to-spermatogonia-transition-initiates-prior-to-birth-in-murine-testes-and-it-requires-fgf-signaling
#3
Han Pin Pui, Yumiko Saga
Spermatogenesis is a continuous and highly coordinated process of spermatozoa production. In mice, this process is believed to initiate shortly after birth with the emergence of nascent spermatogonia in the testes. However, because the nascent spermatogonia originated from the gonocytes are morphologically indistinguishable from their predecessors and there is no clear definition for the gonocytes-to-spermatogonia transition (GST), it remains unclear when and how spermatogenesis is initiated in the mouse testes...
March 21, 2017: Mechanisms of Development
https://www.readbyqxmd.com/read/28340157/cervical-lateral-glide-neural-mobilization-is-effective-in-treating-cervicobrachial-pain-a-randomized-waiting-list-controlled-clinical-trial
#4
David Rodríguez-Sanz, César Calvo-Lobo, Francisco Unda-Solano, Irene Sanz-Corbalán, Carlos Romero-Morales, Daniel López-López
Background.:  Cervicobrachial pain (CP) is a high-incidence and prevalent condition. Cervical lateral glide (CLG) is a firstline treatment of CP. There is a current lack of enough high-quality randomized controlled double-blind clinical trials that measure the effectiveness of neural tissue mobilization techniques such as the CLG and its specific effect over CP. Objectives.:  The aim of the present study was to assess the effect of CLG neural mobilization in treating subjects who suffer from CP, compared with the complete absence of treatment...
March 13, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28339132/formation-of-endohedral-metallofullerene-emf-ions-of-mnc2m-m%C3%A2-%C3%A2-la-y-n%C3%A2-%C3%A2-%C3%A2-6-50%C3%A2-%C3%A2-%C3%A2-2%C3%A2-m%C3%A2-%C3%A2-%C3%A2-194-in-the-laser-ablation-process-with-graphene-as-precursor
#5
Xianglei Kong, Xiaodi Bao
RATIONALE: Graphene has been found to be a versatile precursor for the generation of mono-endohedral metallofullerenes (EMFs) of alkali and alkali earth metal atoms. Thus, it is important to investigate whether graphene is also a good precursor for the generation of EMFs including multi-metal atoms or some transition metal atoms. METHODS: Experiments were performed on a 7.0 T Fourier transform ion cyclotron resonance (FT ICR) mass spectrometer. Laser ablation mass spectra were obtained by laser irradiation on mixtures of graphene and LaCl3 , YCl3 or HAuCl4 on a stainless steel plate...
March 24, 2017: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28338038/school-based-dental-sealant-programmes-may-be-effective-in-caries-prevention
#6
Tarek Himida, Ucheka Promise
DesignSplit-mouth randomised controlled clinical trial.InterventionSchool-based dental sealant (SBDS) programme. The study population that was selected from 67-year-old pupils of 16 elementary schools in areas of low socioeconomic status within Nice, France. Children with first permanent molar pairs sufficiently erupted for sealing with no caries (ICDAS [International Caries Detection and Assessment System] 0) or initial enamel lesions (ICDAS 1-2) were included. Children were randomised to either the intervention group (light polymerised resin-based sealant with fluoride) or the control group (no treatment)...
March 2017: Evidence-based Dentistry
https://www.readbyqxmd.com/read/28337658/erratum-to-analysis-of-monoclonal-antibodies-in-human-serum-as-a-model-for-clinical-monoclonal-gammopathy-by-use-of-21-tesla-ft-icr-top-down-and-middle-down-ms-ms
#7
Lidong He, Lissa C Anderson, David R Barnidge, David L Murray, Christopher L Hendrickson, Alan G Marshall
No abstract text is available yet for this article.
March 23, 2017: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/28336998/characteristics-and-treatment-of-invasive-cervical-resorption-in-vital-teeth-a-narrative-review-and-a-report-of-two-cases
#8
P Tsaousoglou, E Markou, N Efthimiades, I Vouros
Invasive cervical resorption (ICR) is a significant defect of the root surface where the hard dental tissues are undermined and become translucent due to the resorptive granulomatous tissue. It is mainly detected on radiographs. The radiographic appearance of ICR is asymmetrical radiolucency with irregular margins and an unchanged root canal. The purpose of this study is to present a comprehensive review together with the characteristics and the treatment of ICR through two cases which were followed-up for 36 months...
March 24, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28335513/bioactive-potential-of-marine-macroalgae-from-the-central-red-sea-saudi-arabia-assessed-by-high-throughput-imaging-based-phenotypic-profiling
#9
Stephan Kremb, Constanze Müller, Philippe Schmitt-Kopplin, Christian R Voolstra
Marine algae represent an important source of novel natural products. While their bioactive potential has been studied to some extent, limited information is available on marine algae from the Red Sea. This study aimed at the broad discovery of new bioactivities from a collection of twelve macroalgal species from the Central Red Sea. We used imaging-based High-Content Screening (HCS) with a diverse spectrum of cellular markers for detailed cytological profiling of fractionated algal extracts. The cytological profiles for 3 out of 60 algal fractions clustered closely to reference inhibitors and showed strong inhibitory activities on the HIV-1 reverse transcriptase in a single-enzyme biochemical assay, validating the suggested biological target...
March 20, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28333539/age-is-not-a-contraindication-for-cartilage-surgery-a-critical-analysis-of-standardized-outcomes-at-long-term-follow-up
#10
Giuseppe Filardo, Luca Andriolo, Andrea Sessa, Francesca Vannini, Alberto Ferruzzi, Maurilio Marcacci, Elizaveta Kon
BACKGROUND: Age is commonly accepted as a negative prognostic factor in cartilage surgery, and cutoff values of 30 to 40 years have been previously suggested as treatment indication. However, the lower outcome scores documented in older patients do not take in consideration the decreasing requirements of an aging joint. PURPOSE: To analyze the real effect of age in terms of recovery with respect to the functional level expected for different age categories of patients treated for cartilage lesions...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28333435/laser-desorption-ionization-coupled-to-ft-icr-mass-spectrometry-for-studies-of-natural-organic-matter
#11
John W T Blackburn, Will Kew, Margaret C Graham, Dusan Uhrin
Laser desorption/ionization (LDI) was investigated as an ionization method for Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) studies of natural organic matter (NOM). Using International Humic Substances Society standards, Suwannee River fulvic acid (SRFA) and Suwannee River natural organic matter (SRNOM), LDI was found to ionize very similar set of compounds (> 90 % of molecular formulae identity) to the matrix assisted laser desorption/ionization (MALDI), while producing higher quality spectra...
March 23, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28332841/effects-of-diet-quality-and-psychosocial-stress-on-the-metabolic-profiles-of-mice
#12
Tatsuhiko Goto, Shozo Tomonaga, Atsushi Toyoda
There has been an increasing interest in relationship between stress and diet. To address this relationship, we evaluated an animal model of depression: male C57BL/6J mice subjected to subchronic mild social defeat stress (sCSDS) for 10 consecutive days using male ICR mice under two different calorie-adjusted diets conditions-non-purified (MF) and semi-purified (AIN) diets made from natural and chemical ingredients mainly, respectively. Our previous study indicates diet quality and purity affect stress susceptibility in sCSDS mice...
March 23, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28329001/experimental-demonstration-of-the-possible-role-of-acanthamoeba-polyphaga-in-the-infection-and-disease-progression-in-buruli-ulcer-bu-using-icr-mice
#13
Bright K Azumah, Phyllis G Addo, Alfred Dodoo, Gordon Awandare, Lydia Mosi, Daniel A Boakye, Michael D Wilson
The transmission of Buruli ulcer (BU), caused by Mycobacterium ulcerans (MU), remains puzzling although a number of hypothesis including through bites of infected aquatic insects have been proposed. We report the results of experiments using ICR mice that give credence to our hypothesis that Acanthamoeba species may play a role in BU transmission. We cocultured MU N2 and MU 1615 which expresses red fluorescent protein (RFP) and Acanthamoeba polyphaga (AP), and confirmed infected AP by Ziehl-Neelsen (ZN) staining...
2017: PloS One
https://www.readbyqxmd.com/read/28326764/on-the-utility-of-higher-harmonics-in-electrospray-ionization-fourier-transform-electrostatic-linear-ion-trap-mass-spectrometry
#14
Eric T Dziekonski, Joshua T Johnson, Scott A McLuckey
The mass resolution (M/ΔM FWHM) is observed to linearly increase with harmonic order in a Fourier transform electrostatic linear ion trap mass spectrometer (FT-ELIT-MS). This behavior was predicted by Grosshans and Marshall for frequency-multiple detection in a Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR-MS) only for situations when the prominent mechanism for signal decay is ion ejection from the trap. As the analyzer pressure in our ELIT chamber is relatively high, such that collisional scattering and collision-induced dissociation are expected to underlie much of the ion loss, we sought to explore the relationship between harmonic order and mass resolution...
March 22, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28321051/chronotoxicity-of-bromobenzene-induced-hepatic-injury-in-mice
#15
Hiroki Yoshioka, Tsunemasa Nonogaki, Nobuyuki Fukuishi, Yasuro Shinohara, Gi-Wook Hwang, Katsumi Ohtani, Nobuhiko Miura
The aim of the present study is to investigate whether or not bromobenzene (BB) toxicity varies with circadian periodicity. Seven-week-old male ICR mice were injected with 900 mg/kg (5.73 mmol/kg) BB intraperitoneally at 4 different time points of a day (zeitgeber time [ZT]: ZT0, ZT6, ZT12, and ZT18). Mortality was then monitored for 7 days after injection. Interestingly, mice were sensitive to BB acute toxicity at ZT6 while tolerant at ZT18. Moreover, in mice that were given a non-lethal dose of BB (540 mg (3...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/28319418/autologous-cartilage-chip-transplantation-improves-repair-tissue-composition-compared-with-marrow-stimulation
#16
Bjørn Borsøe Christensen, Morten Lykke Olesen, Martin Lind, Casper Bindzus Foldager
BACKGROUND: Repair of chondral injuries by use of cartilage chips has recently demonstrated clinical feasibility. PURPOSE: To investigate in vivo cartilage repair outcome of autologous cartilage chips compared with marrow stimulation in full-thickness cartilage defects in a minipig model. STUDY DESIGN: Controlled laboratory study. METHODS: Six Göttingen minipigs received two 6-mm chondral defects in the medial and lateral trochlea of each knee...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28317895/upregulation-of-skeletal-muscle-pgc-1%C3%AE-through-the-elevation-of-cyclic-amp-levels-by-cyanidin-3-glucoside-enhances-exercise-performance
#17
Toshiya Matsukawa, Hideko Motojima, Yuki Sato, Shinya Takahashi, Myra O Villareal, Hiroko Isoda
Regular exercise and physical training enhance physiological capacity and improve metabolic diseases. Skeletal muscles require peroxisome proliferator-activated receptor-gamma coactivator-1α (PGC-1α) in the process of their adaptation to exercise owing to PGC-1α's ability to regulate mitochondrial biogenesis, angiogenesis, and oxidative metabolism. Cyanidin-3-glucoside (Cy3G) is a natural polyphenol and a nutraceutical factor, which has several beneficial effects on human health. Here, the effect of Cy3G on exercise performance and the underlying mechanisms involved were investigated...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28317866/cyclooxygenase-2-facilitates-dengue-virus-replication-and-serves-as-a-potential-target-for-developing-antiviral-agents
#18
Chun-Kuang Lin, Chin-Kai Tseng, Yu-Hsuan Wu, Chih-Chuang Liaw, Chun-Yu Lin, Chung-Hao Huang, Yen-Hsu Chen, Jin-Ching Lee
Cyclooxygenase-2 (COX-2) is one of the important mediators of inflammation in response to viral infection, and it contributes to viral replication, for example, cytomegalovirus or hepatitis C virus replication. The role of COX-2 in dengue virus (DENV) replication remains unclear. In the present study, we observed an increased level of COX-2 in patients with dengue fever compared with healthy donors. Consistent with the clinical data, an elevated level of COX-2 expression was also observed in DENV-infected ICR suckling mice...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28315023/external-noise-and-external-signal-induced-transition-of-gene-switch-and-coherence-resonance-in-the-genetic-regulatory-system
#19
Jian-Cheng Shi, Min Luo, Tao Dong, Chu-Sheng Huang
The transition of gene switch induced by external noises (multiplicative external noise and additive external noise) and external signals is investigated in the genetic regulatory system. Results show that the state-to-state transition of gene switch as well as resonant behaviors, such as the explicit coherence resonance (ECR), implicit coherence resonance (ICR) and control parameter coherence biresonance (CPCBR), can appear when noises are injected into the genetic regulatory system. The ECR is increased with the increase of the control parameter value when starting from the supercritical Hopf bifurcation parameter point, and there exists a critical control parameter value for the occurrence of ECR...
March 17, 2017: Acta Biotheoretica
https://www.readbyqxmd.com/read/28302318/regional-differences-of-tibial-and-femoral-cartilage-in-the-chondrocyte-gene-expression-immunhistochemistry-and-composite-in-different-stages-of-osteoarthritis
#20
A Lahm, D Dabravolski, H Spank, H Merk, J Esser, R Kasch
The function of articular cartilage as an avascular tissue is mainly served by collagen type II and proteoglycan molecules. Within this matrix homeostasis between production and breakdown of the matrix is exceptionally sensitive. The current study was conducted to identify regional differences in specific alterations in cartilage composition during the osteoarthritic process of the human knee joint. Therefor the changes in the expression of the key molecules of the extracellular matrix were measured in dependence of the anatomical side (femoral vs tibial) and associated with immunohistochemistry and quantitative measurement...
February 24, 2017: Tissue & Cell
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