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Ashley B McKillop, Linda J Carroll, Bruce D Dick, Michele C Battié
BACKGROUND CONTEXT: Of the three broad outcome domains of body functions and structures, activities, and participation (e.g., engaging in valued social roles) outlined in the World Health Organization's (WHO) International Classification of Functioning, Disability and Health (ICF), it has been argued that participation is the most important to individuals, particularly those with chronic health problems. Yet, participation is not commonly measured in back pain research. PURPOSE: The aim of this study was to investigate the construct validity of a modified 5-Item Pain Disability Index (PDI) score as a measure of participation in people with chronic back pain...
July 20, 2017: Spine Journal: Official Journal of the North American Spine Society
Jin Song, Yongchao Zeng, Le Wang, Xindi Duan, Maura Puerto, Walter G Chapman, Sibani L Biswal, George J Hirasaki
This study presents experiment and surface complexation modeling (SCM) of synthetic calcite zeta potential in brine with mixed potential determining ions (PDI) under various CO2 partial pressures. Such SCM, based on systematic zeta potential measurement in mixed brines (Mg(2+), SO4(2-), Ca(2+) and CO3(2-)), is currently not available in the literature and is expected to facilitate understanding of the role of electrostatic forces in calcite wettability alteration. We first use a double layer SCM to model experimental zeta potential measurements and then systematically analyze the contribution of charged surface species...
July 11, 2017: Journal of Colloid and Interface Science
Yan Li, Ran Andy Mei, Zhongqiang Yang
This study demonstrates a new process for preparation of oil-in-water (O/W) emulsion using the high gravity technique. This involves a mixture of oil and water that are passed through a rotating packed bed, under a high shear force, from which oil is emulsified into tiny droplets and subsequently dispersed in water. The process is cycled in order to break the droplets repeatedly and achieve an emulsion with small size and low polydispersity index (PDI). The advantage of the high gravity technique is that the emulsions with a desired size and polydispersity can be rapidly obtained by tuning experimental parameters, such as relative centrifugal force (RCF), cycle times (CT), liquid flow rate (VL) and surfactant concentration (Csurfactant)...
June 13, 2017: Journal of Colloid and Interface Science
Liang Zhao, Hua Sun, Xiaoyuan Liu, Changmei Liu, Haiquan Shan, Jiuxu Xia, Zongxiang Xu, Fei Chen, Zhi-Kuan Chen, Wei Huang
The incorporation of fluorine atoms in organic semiconducting materials has attracted much attention recently due to its unique function to manipulate the molecular packing, film morphology and molecular energy levels. In this work, two perylenediimide (PDI) derivatives FPDI-CDTph and FPDI-CDTph2F were designed and synthesized to investigate the impact of fluorination on non-fullerene acceptors. Both FPDI-CDTph and FPDI-CDTph2F exhibited strong and broad absorption profiles, suitable lowest unoccupied molecular orbital (LUMO) and highest occupied molecular orbital (HOMO) energy levels, and good electron transport ability...
June 14, 2017: Chemistry, An Asian Journal
Yasuyuki Honjo, Takashi Ayaki, Takami Tomiyama, Tomohisa Horibe, Hidefumi Ito, Hiroshi Mori, Ryosuke Takahashi, Koji Kawakami
Protein disulfide isomerase (PDI) is a chaperone protein located in the endoplasmic reticulum (ER). Nitric oxide-induced S-nitrosylation of PDI inhibits its enzymatic activity, leading to protein accumulation and activation of the unfolded protein response. Protein disulfide isomerase P5 (P5) is a member of the PDI family that mostly localizes to the ER lumen. Both S-nitrosylated PDI and S-nitrosylated P5 are found in Alzheimer's disease (AD) brain. Previously, we showed that expression of the ER stress marker, growth arrest, and DNA damage protein (GADD34) was significantly increased in neurons and oligodendrocytes in AD brain...
July 21, 2017: Neuropathology: Official Journal of the Japanese Society of Neuropathology
Ambika Satija, Shilpa N Bhupathiraju, Donna Spiegelman, Stephanie E Chiuve, JoAnn E Manson, Walter Willett, Kathryn M Rexrode, Eric B Rimm, Frank B Hu
BACKGROUND: Plant-based diets are recommended for coronary heart disease (CHD) prevention. However, not all plant foods are necessarily beneficial for health. OBJECTIVES: This study sought to examine associations between plant-based diet indices and CHD incidence. METHODS: We included 73,710 women in NHS (Nurses' Health Study) (1984 to 2012), 92,329 women in NHS2 (1991 to 2013), and 43,259 men in Health Professionals Follow-up Study (1986 to 2012), free of chronic diseases at baseline...
July 25, 2017: Journal of the American College of Cardiology
Bao Ngoc Tran, Hanh Thuy Nguyen, Jong Oh Kim, Chul Soon Yong, Chien Ngoc Nguyen
OBJECTIVES: Paclitaxel (PTX) has been indicated for treatment of a variety of solid tumors, while artesunate (ART) has been reported to have the potential for use in combination chemotherapy. In this study, the combination of ART and PTX was prepared in nanoparticle to induce the synergic effect and improve therapeutic efficiency in treatment of breast cancer Methods: Dual anti-cancer agents (PTX and ART) were loaded into Poly-D,L-lactic-co-glycolic acid (PLGA) nanoparticle (NP) by solvent evaporation technique from oil in water emulsion, stabilized with Tween 80...
July 20, 2017: Drug Development and Industrial Pharmacy
Aubryanna Hettinghouse, Ronghan Liu, Chuan-Ju Liu
The protein disulfide isomerase (PDI) gene family is a protein family classically characterized by endoplasmic reticulum (ER) localization and isomerase and redox activity. ERp57, a prominent multifunctional member of the PDI family, is detected at various levels in multiple cellular localizations outside of the ER. ERp57 has been functionally linked to a host of physiological processes and numerous studies have demonstrated altered expression and aberrant functionality of ERp57 in association with diverse pathological states...
July 16, 2017: Pharmacology & Therapeutics
Geeta Arya, R Mankamna Kumari, Nidhi Gupta, Ajeet Kumar, Ramesh Chandra, Surendra Nimesh
In the present study, silver nanoparticles (PJB-AgNPs) have been biosynthesized employing Prosopis juliflora bark extract. The biosynthesis of silver nanoparticles was monitored on UV-vis spectrophotometer. The size, charge and polydispersity index (PDI) of PJB-AgNPs were determined using dynamic light scattering (DLS). Different parameters dictating the size of PJB-AgNPs were explored. Nanoparticles biosynthesis optimization studies suggested efficient synthesis of highly dispersed PJB-AgNPs at 25 °C when 9...
July 18, 2017: Artificial Cells, Nanomedicine, and Biotechnology
Anita Nath, Gudlavalleti Venkata Satyanarayana Murthy, Giridhara R Babu, Gian Carlo Di Renzo
BACKGROUND: The mental health status of a pregnant woman and its consequent impact on foetal well being is not given much importance compared to the risk imposed by obstetric complications and medical conditions. Maternal psychological distress is a major public health problem and needs timely detection and intervention to prevent any adverse pregnancy outcome. There is ample evidence from literature that justifies the association of prenatal maternal mental stress and elevated cortisol with delayed infant motor and cognitive development; evidence from India being rather limited...
July 17, 2017: BMC Psychiatry
Taiga Fujii, Arun K Thazhathveetil, Ilyas Yildirim, Ryan M Young, Michael R Wasielewski, George C Schatz, Frederick D Lewis
The dynamics of electron injection have been investigated in intramolecular i-motif conjugates possessing stilbenediether (Sd) and perylenediimide (PDI) chromophores separated by either four or six hemi-protonated cytosine C-C base pairs assembled with synthetic loops. Circular dichroism spectra are consistent with the formation of i-motif structures in the absence or presence of Sd and PDI chromophores. The fluorescence of the Sd chromophore is essentially completely quenched by neighboring C-C base pairs, consistent with their function as an electron donor and electron acceptor, respectively...
July 17, 2017: Journal of Physical Chemistry. B
Efi Parpa, Sotiria Kostopoulou, Eleni Tsilika, Antonis Galanos, Stylianos Katsaragakis, Kyriaki Mystakidou
CONTEXT: The Patient Dignity Inventory (PDI) is an instrument to measure dignity distressing aspects at the end of life. OBJECTIVES: The aims of the current study was the translation of the PDI in Greek language as well as to measure its psychometric aspects in a palliative care unit. METHODS: A back-translation method was obtained at the Greek version. 120 advanced cancer patients completed the Greek version of the PDI, the Greek Hospital Anxiety and Depression Scale (Gr-HADS), The Greek Schedule of attitudes towards hastened death (SAHD-Gr) and the Greek SF-12 (Short Form Health Survey: SF-12)...
July 12, 2017: Journal of Pain and Symptom Management
Na Li, Huanhuan Wang, Xiaosai Qu, Yu Chen
ROMP is an effective method for preparing functional polymers due to its having characteristics of "living" polymerization and rapid development of catalysts. In the present work, poly(norbornene-methylamine), a mimic of chitosan, was synthesized via ROMP reaction. The amino-protected product, 5-norbornene-2-(N-methyl)-phthalimide, was prepared by a reaction of 5-norbornene-2-methylamine with phthalic anhydride, which was then subjected to the ROMP reaction in the presence of Hoveyda-Grubbs 2nd catalyst to afford poly(norbornene-(N-methyl)-phthalimide)...
July 14, 2017: Marine Drugs
Pimchanok Witayaudom, Utai Klinkesorn
Nanostructured lipid carrier (NLC) was fabricated from rambutan (Nephelium lappaceum L.) kernel fat stabilized with Tween 80 in this present work. The influence of the Tween 80 concentration (0.025, 0.05, 0.1, 0.2, 0.5 and 1.0wt%) and solidification temperature (5 and 25°C) on the characteristics and stability of the NLC were investigated. The results showed that an increase in the Tween 80 concentration caused decreased zeta-potential (ζ-potential) and particle size (Z-average) with no significant effect on the polydispersity index (PDI)...
July 4, 2017: Journal of Colloid and Interface Science
Greta Avm Geerts
PURPOSE: The objective of this trial was to compare short-term patient preference for two mandibular complete denture (CD) fabrication techniques: neutral zone (NZ) and conventional (CV). MATERIALS AND METHODS: A prospective, within-subject, randomized crossover trial was performed on a sample of 37 edentulous patients with complete denture experience. Two new sets of CDs were made for each patient, one set with a CV and one with a NZ mandibular denture. After consecutively wearing each set for at least 2 months after the last adjustment visit, patients indicated their preference (CV, NZ, or none)...
July 2017: International Journal of Prosthodontics
Nelida Y Martinez, Patricia F Andrade, Nelson Durán, Sebastian Cavalitto
In the present work, a double emulsion was developed for the encapsulation of Bovine Serum Albumin (BSA) as a model protein for the future encapsulation of viral proteins. The first emulsion polydispersity index (PDI) was studied with increasing concentrations of poly (ε-caprolactone) (PCL) as stabilizer (from 16% w/v to 5% w/v) and polyvinyl alcohol (PVA) as the surfactant in the second emulsion at 1.5% w/v. Results suggest that at decreasing concentrations of PCL the PDI of the emulsion also decrease, indicating that viscosity of the emulsion is crucial in the homogeneity of the resultant size distribution of the nanoparticles...
June 29, 2017: Colloids and Surfaces. B, Biointerfaces
Qiang Zhao, Hanlin Wang, Zhenjie Ni, Jie Liu, Yonggang Zhen, Xiaotao Zhang, Lang Jiang, Rongjin Li, Huanli Dong, Wenping Hu
Organic electronics based on poly(vinylidenefluoride/trifluoroethylene) (P(VDF-TrFE)) dielectric is facing great challenges in flexible circuits. As one indispensable part of integrated circuits, there is an urgent demand for low-cost and easy-fabrication nonvolatile memory devices. A breakthrough is made on a novel ferroelectric random access memory cell (1T1T FeRAM cell) consisting of one selection transistor and one ferroelectric memory transistor in order to overcome the half-selection problem. Unlike complicated manufacturing using multiple dielectrics, this system simplifies 1T1T FeRAM cell fabrication using one common dielectric...
July 10, 2017: Advanced Materials
Ping Shao, Qiang Qiu, Hangjun Chen, Jieyu Zhu, Peilong Sun
The aim of this research was to investigate the effect of metallic ions (Na(+), Ca(2+), K(+) and Mg(2+)) on the physicochemical stability of curcumin emulsions stabilized by Ulva fasciata polysaccharide (UFP). Mean droplet diameter, PdI, zeta-potential, microscopic morphology, and rheological properties of curcumin emulsion stabilized by UFP were investigated. The results showed that different metal ions had significantly different effects on the stability of emulsion. When the effect of Mg(2+) was compared with others, it was found that Mg(2+) had a pronounced effect on emulsion stability...
July 4, 2017: International Journal of Biological Macromolecules
Yasaman Soltani, Navid Goodarzi, Reza Mahjub
OBJECTIVE: The aim of this study was the preparation of a self nano-emulsifying drug delivery system (SNEDDS) for oral delivery of heparin. SIGNIFICANCE: Preparation of hydrophobic complexes between heparin as the hydrophilic macromolecule and cationic polymer of β-cyclodextrin (CPβCD) was considered for preparation of orally administered SNEDDS in which the drug incorporated in internal oil phase of O/W nano-droplets. METHOD: Hydrophobic complexes of heparin-CPβCD were prepared by electrostatic interaction...
July 7, 2017: Drug Development and Industrial Pharmacy
Karla B Romio, Kevin F Dos Santos, Romário J da Silva, Maria F C Pedro, Alessandro S Kalck, Marcos da Silva Sousa, Leandro M Possamai, Paula C S Souto, Josmary R Silva, Nara C de Souza
Candida albicans is responsible for many of the infections affecting immunocompromised individuals. Although most C. albicans are susceptible to antifungal drugs, uncontrolled use of these drugs has promoted the development of resistance to current antifungals. The clinical implication of resistant strains has led to the search for safer and more effective drugs as well as alternative approaches, such as controlled drug release using liposomes and photodynamic inactivation (PDI), to eliminate pathogens by combining light and photosensitizers...
June 24, 2017: Journal of Photochemistry and Photobiology. B, Biology
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