Read by QxMD icon Read


Adam Kasparek, Bogdan Smyk
The fluorescence technique is very popular and has been used in many fields of research. It is simple in its assumptions but not very easy to use. One of the main problems is the inner filter effect (IF) I and II which takes place in the cuvette. IF type I is permanently present, but IF type II occurs only when absorption and fluorescence spectra overlap. To avoid IF type I, absorbencies in the cuvette should be smaller than 0.05, which is however very difficult to obtain in many experiments. In this work we propose a new method to solve these problems in the case of a Cary Eclipse fluorimeter, having horizontally-oriented slits, based on old equations developed in the middle of the last century...
March 13, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Alejandra M Wiedeman, Kyly C Whitfield, Kaitlin M March, Nancy N Chen, Hou Kroeun, Ly Sokhoing, Prak Sophonneary, Roger A Dyer, Zhaoming Xu, David D Kitts, Timothy J Green, Sheila M Innis, Susan I Barr
Choline has critical roles during periods of rapid growth and development, such as infancy. In human milk, choline is mostly present in water-soluble forms (free choline, phosphocholine, and glycerophosphocholine). It is thought that milk choline concentration is influenced by maternal choline intake, and the richest food sources for choline are of animal origin. Scarce information exists on milk choline from countries differing in animal-source food availability. In this secondary analysis of samples from previous trials, the concentrations of the water-soluble forms of choline were quantified by liquid chromatography-tandem mass spectrometry in mature milk samples collected from lactating women in Canada ( n = 301) and in Cambodia ( n = 67)...
March 20, 2018: Nutrients
Honglin Jin, Chao Wan, Zhenwei Zou, Guifang Zhao, Lingling Zhang, Yuanyuan Geng, Tong Chen, Ai Huang, Fagang Jiang, Jue-Ping Feng, Jonathan F Lovell, Jing Chen, Gang Wu, Kunyu Yang
Immunosuppressive tumor microenvironments (TMEs) create tremendous obstacles for an effective cancer therapy. Herein, we developed a melittin-RADA32 hybrid peptide hydrogel loaded with doxorubicin (DOX) for a potent chemoimmunotherapy against melanoma through the active regulation of TMEs. The formed melittin-RADA32-DOX (MRD) hydrogel has an interweaving nanofiber structure and exhibits excellent biocompatibility, controlled drug release properties both in vitro and in vivo, and an enhanced killing effect to melanoma cells...
March 20, 2018: ACS Nano
Myrte Neijenhuis, Tom J G Gevers, Thomas D Atwell, Tim J Gunneson, Amanda C Schimek, Wietske Kievit, Joost P H Drenth, Patrick S Kamath
OBJECTIVES: As current treatments of cirrhotic ascites are not associated with survival benefit, symptom relief is the major therapeutic end point. We developed a questionnaire (Ascites-Q; modified polycystic liver disease questionnaire) and assessed validity and responsiveness for symptom assessment in cirrhotic ascites. METHODS: Ascites-Q was compared with Functional Assessment of Chronic Illness Therapy-Ascites Index (FACIT-AI; developed for malignant ascites) and Japanese Ascites Symptom Inventory-7 (ASI-7) in cirrhotics undergoing large-volume paracentesis...
March 20, 2018: American Journal of Gastroenterology
Wei Cong, Lan-Bi Nie, Si-Yuan Qin, Wei-Li Wang, Ai-Dong Qian, Qing-Feng Meng
This study was conducted to detect specific anti-Neospora antibodies using a commercial competitive-inhibition ELISA kit, and to evaluate the risk factors for Neospora spp. infection. Out of a total of 2,228 donkey sera collected in three provinces in China, 211 (9.5%) were found to be positive for anti-Neospora antibodies. Statistical analysis revealed that age (p = 0.019, OR = 1.62, 95%CI: 1.08-2.44), feeding status (p < 0.001, OR = 3.79, 95%CI: 2.65-5.43), miscarriage history (p = 0...
2018: Parasite: Journal de la Société Française de Parasitologie
Ai-Jiao Xiao, Lin He, Xin Ouyang, Jie-Min Liu, Ming-Ren Chen
Heat-sensitive suspended moxibustion has a neuroprotective effect against focal cerebral ischemia/reperfusion injury, but the underlying mechanisms remain unclear. The duration of heat-sensitive suspended moxibustion (usually from 30 minutes to 1 hour) is longer than traditional suspended moxibustion (usually 15 minutes). However, the effects of 15- and 35-minute suspended moxibustion in rats with cerebral ischemia/reperfusion injury are poorly understood. In this study, we performed 15- or 35-minute suspended moxibustion at acupoint Dazhui (GV14) in an adult rat model of focal cerebral ischemia/reperfusion injury...
February 2018: Neural Regeneration Research
Forouzan Mohamadi, Somayeh Ebrahimi-Barough, Mohammad Reza Nourani, Akbar Ahmadi, Jafar Ai
Regeneration of peripheral nerve defects remained a remarkable clinical challenge. Engineered nerve conduits represent a promising strategy to improve functional recovery in peripheral nerve injury repair. However, nerve conduits require additional factors such as neurotrophic factors to create a more conducive microenvironment for nerve regeneration. Neurotrophic factors have well-demonstrated abilities to improve neurite outgrowth, making them great candidates for repairing of defected nerves. To this end, we examined the beneficial effects of repairing the transected rat sciatic nerve by loading of nerve growth factor (NGF) in nerve conduits...
March 20, 2018: Artificial Cells, Nanomedicine, and Biotechnology
Jie Dong, Zhi-Jiang Yao, Lin Zhang, Feijun Luo, Qinlu Lin, Ai-Ping Lu, Alex F Chen, Dong-Sheng Cao
BACKGROUND: With the increasing development of biotechnology and informatics technology, publicly available data in chemistry and biology are undergoing explosive growth. Such wealthy information in these data needs to be extracted and transformed to useful knowledge by various data mining methods. Considering the amazing rate at which data are accumulated in chemistry and biology fields, new tools that process and interpret large and complex interaction data are increasingly important...
March 20, 2018: Journal of Cheminformatics
Hai-Ming Li, Feng Feng, Jin-Wei Qiang, Guo-Fu Zhang, Shu-Hui Zhao, Feng-Hua Ma, Yong-Ai Li, Wei-Yong Gu
PURPOSE: This study aimed to investigate the diagnostic performance of quantitative DCE-MRI for characterizing ovarian tumors. METHODS: We prospectively assessed the differences of quantitative DCE-MRI parameters (Ktrans , kep , and ve ) among 15 benign, 28 borderline, and 66 malignant ovarian tumors; and between type I (n = 28) and type II (n = 29) of epithelial ovarian carcinomas (EOCs). DCE-MRI data were analyzed using whole solid tumor volume region of interest (ROI) method, and quantitative parameters were calculated based on a modified Tofts model...
March 20, 2018: Abdominal Radiology
Shearwood McClelland, Jennifer Leberknight, B Ashleigh Guadagnolo, C Norman Coleman, Daniel G Petereit
Introduction: American Indian/Alaska Native (AI/AN) patients with cancer disproportionally present with more advanced stages of disease and have the worst cancer-specific survival rates of any racial/ethnic group in the United States. The presence of disparities in radiation therapy (RT) access for AI/AN patients has rarely been examined. Methods and materials: National Cancer Institute (NCI) initiatives toward addressing AI/AN disparities were examined. Additionally, an extensive PubMed literature search for studies investigating RT access disparities in AI/AN patients was performed...
January 2018: Advances in Radiation Oncology
Hongyun Zhao, Meng Wu, Leilei Zhu, Yi Tian, Mingxing Wu, Yizhen Li, Liming Deng, Wei Jiang, Wei Shen, Zhigang Wang, Zhechuan Mei, Pan Li, Haitao Ran, Zhiyi Zhou, Jianli Ren
Objective: Prepare a multifunctional ultrasound molecular probe, hyaluronic acid-mediated cell-penetrating peptide-modified 10-hydroxycamptothecin-loaded phase-transformation lipid nanoparticles (HA/CPPs-10-HCPT-NPs), and to combine HA/CPPs-10-HCPT-NPs with low-intensity focused ultrasound (LIFU) for precision theranostics against hepatocellular carcinoma (HCC). Methods: HA/CPPs-10-HCPT-NPs were prepared using thin-film dispersion, ultrasound emulsification, and electrostatic effects. HA/CPPs-10-HCPT-NPs were characterized for particle size, zeta potential, encapsulation efficiency and drug-loading efficiency...
2018: Theranostics
Daoliang Lan, Wenhui Ji, Baoshan Lin, Yabing Chen, Cai Huang, Xianrong Xiong, Mei Fu, Tserang Donko Mipam, Yi Ai, Bo Zeng, Ying Li, Zhixin Cai, Jiangjiang Zhu, Dawei Zhang, Jian Li
A correction to this article has been published and is linked from the HTML version of this paper. The error has been fixed in the paper.
March 19, 2018: Scientific Reports
Meiting Yang, Hanhan Zhao, Huihan Ai, Hongbin Zhu, Shuyue Wang, Yongli Bao, Yuxin Li
A high level of APOC3 expression is an independent risk factor for some lipid metabolism-related diseases, such as cardiovascular disease (CVD), nonalcoholic fatty liver disease (NAFLD) and atherosclerosis (AS). This suggests that down-regulating APOC3 expression is a potential way of regulating lipid levels. In this study, we used luciferase reporter screening to identify a natural compound, alantolactone (ALA), that can inhibit the promoter activity of APOC3. ALA decreased APOC3 expression at both mRNA and protein levels...
March 16, 2018: European Journal of Pharmacology
L Lecová, F Weisz, P Tůmová, V Tolarová, E Nohýnková
To date, genotyping data on giardiasis have not been available in the Czech Republic. In this study, we characterized 47 human isolates of Giardia intestinalis from symptomatic as well as asymptomatic giardiasis cases. Genomic DNA from trophozoites was tested by PCR-sequence analysis at three loci (β-giardin, glutamate dehydrogenase and triose phosphate isomerase). Sequence analysis showed assemblages A and B in 41 (87.2%) and six (12.8%) isolates, respectively. Two of the 41 assemblage A samples were genotyped as sub-assemblage AI, and 39 were genotyped as sub-assemblage AII...
March 20, 2018: Parasitology
P S Baruselli, R M Ferreira, M F Sá Filho, G A Bó
The aim of this review is to compare the performance of different reproductive programs using natural service, estrus synchronization treatment before natural service (timed natural breeding (TNB)), artificial insemination (AI) following estrus detection and timed artificial insemination (TAI) in beef herds. It is well known that after parturition the beef cow undergoes a period of anestrous, when they do not exhibit estrus, eliminating the opportunity to become pregnant in the early postpartum by natural mating or by AI after detection of estrus...
March 20, 2018: Animal: An International Journal of Animal Bioscience
Elaine Li Yen Tan, Meaw Charm Kuek, Hung Chew Wong, Serene Ai Kiang Ong, Mimi Yow
OBJECTIVE: Children with cleft lip and palate are reported to be commonly associated with higher prevalence of dental anomalies such as hypodontia, supernumeraries, and abnormalities in tooth size, shape, and position. This study investigated the prevalence of dental anomalies in a longitudinal cohort of children with unilateral cleft lip and palate (UCLP). DESIGN: The study was a retrospective analysis of radiographs, study models, and treatment notes. PATIENTS: Sixty patients with repaired UCLP aged 13 years old with complete dental records dating from 5 years of age were included...
April 2018: Cleft Palate-craniofacial Journal
M Koruyucu, J Kang, Y J Kim, F Seymen, Y Kasimoglu, Z H Lee, T J Shin, H K Hyun, Y J Kim, S H Lee, J C C Hu, J P Simmer, J W Kim
Tooth enamel, the hardest tissue in the human body, is formed after a complex series of interactions between dental epithelial tissue and the underlying ectomesenchyme. Nonsyndromic amelogenesis imperfecta (AI) is a rare genetic disorder affecting tooth enamel without other nonoral symptoms. In this study, we identified 2 novel ENAM mutations in 2 families with hypoplastic AI by whole exome sequencing. Family 1 had a heterozygous splicing donor site mutation in intron 4, NM_031889; c.123+2T>G. Affected individuals had hypoplastic enamel with or without the characteristic horizontal hypoplastic grooves in some teeth...
March 1, 2018: Journal of Dental Research
Ai Kubo, Julianna Deardorff, Cecile A Laurent, Assiamira Ferrara, Louise C Greenspan, Charles P Quesenberry, Lawrence H Kushi
Early puberty is associated with adverse health outcomes. We investigated whether in utero exposure to maternal obesity is associated with daughters' pubertal timing using 15,267 racially/ethnically diverse Kaiser Permanente Northern California members age 6-11 years with pediatrician-assessed Tanner staging (2003-2017). We extracted maternal body mass index (BMI) during pregnancy from the electronic health record. Using a proportional hazards model with interval censoring we examined the associations between maternal obesity and girl's pubertal timing, and effect modification by race/ethnicity and mediation by pre-pubertal BMI...
March 15, 2018: American Journal of Epidemiology
Hugo Legge, Amira Shaheen, Ghassan Shakhshir, Ai Milojevic
BACKGROUND: Water insecurity is an important risk factor for disease. In recent years, Palestinians have seen access to drinking water increasingly restricted. The aim of this study was to describe such changes over time and examine the association between drinking water sources and the health of children younger than 5 years in the occupied Palestinian territory in 2000-14. METHODS: For this repeated cross-sectional study we used data from five Demographic and Health Surveys conducted between 2000 and 2014...
February 21, 2018: Lancet
Sarah E Ali-Khan, Antoine Jean, Emily MacDonald, E Richard Gold
Mounting evidence indicates that worldwide, innovation systems are increasing unsustainable. Equally, concerns about inequities in the science and innovation process, and in access to its benefits, continue. Against a backdrop of growing health, economic and scientific challenges global stakeholders are urgently seeking to spur innovation and maximize the just distribution of benefits for all. Open Science collaboration (OS) - comprising a variety of approaches to increase open, public, and rapid mobilization of scientific knowledge - is seen to be one of the most promising ways forward...
2018: MNI Open Res
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"