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https://www.readbyqxmd.com/read/28214625/curcumin-functionalized-silk-biomaterials-for-anti-aging-utility
#1
Lei Yang, Zhaozhu Zheng, Cheng Qian, Jianbing Wu, Yawen Liu, Shaozhe Guo, Gang Li, Meng Liu, Xiaoqin Wang, David L Kaplan
Curcumin is a natural antioxidant that is isolated from turmeric (Curcuma longa) and exhibits strong free radical scavenging activity, thus functional for anti-aging. However, poor stability and low solubility of curcumin in aqueous conditions limit its biomedical applications. Previous studies have shown that the anti-oxidation activity of curcumin embedded in silk fibroin films could be well preserved, resulting in the promoted adipogenesis from human mesenchymal stem cells (hMSCs) cultured on the surface of the films...
February 2, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28192143/lrrc8a-dependent-volume-regulated-anion-channel-activity-is-dispensable-for-t-cell-development-and-function
#2
Craig D Platt, Janet Chou, Patrick Houlihan, Yousef R Badran, Lalit Kumar, Wayne Bainter, P Luigi Poliani, Carlos J Perez, Sharon Y R Dent, David E Clapham, Fernando Benavides, Raif S Geha
BACKGROUND: Leucine-rich repeat containing 8A (LRRC8A) is a ubiquitously expressed transmembrane protein with 17 LRRs at its C-terminal end, and is an essential component of the volume regulated anion channel (VRAC) which controls cellular volume. A heterozygous mutation in LRRC8A that truncates the two terminal LRRs was reported in a patient with agammaglobulinemia and absent B cells, and was demonstrated to exert a dominant negative effect on T and B cell development in mice. Lrrc8a(-/-) mice have severely defective T cell development and function...
February 9, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28191673/acquired-hair-curling-after-diphenylcyclopropenone-immunotherapy-in-alopecia-areata-patient
#3
S J Choe, B J Kim, J Choi, W S Lee
Contact immunotherapy using diphenylcyclopropenone (DPCP) is commonly used treatment modality for moderate to severe alopecia areata (AA)(1) . The most common side effects associated with topical immunotherapy using DPCP include eczema, hyperpigmentation, hypopigmentation, vitiligo, and cicatricial alopecia. However, we identified an interesting case of a patient whose entire scalp of straight hair (Figure 1A) became curly after DPCP immunotherapy, which has not been reported previously. A 24-year-old male patient with no specific medical or dermatological history reported to our dermatology outpatient clinic because of sudden hair loss and started treatment after being diagnosed with AA...
February 13, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28183640/preparation-characterization-and-drug-delivery-study-of-a-novel-nanobiopolymeric-multidrug-delivery-system
#4
Abbas Dadkhah Tehrani, Masoumeh Parsamanesh
New nanocarrier for codelivery of curcumin and doxorubicin as the anticancer drugs was synthesized using biocompatible and biodegradable materials. Firstly, an inclusion complex of amylose (Am) and curcumin (CUR) was formed through entrapment of curcumin into the amylose helices. Then the surface of amylose-curcumin (Am-CUR) complex was modified by polycaprolactone (PCL) via esterification reaction between hydroxyl functional groups of amylose and carbonyl groups of PCL. Finally, poly citric acid (PCA) reacted with terminal hydroxyl groups of PCL by esterification reaction...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28182160/curcumin-coordinated-nanoparticles-with-improved-stability-for-reactive-oxygen-species-responsive-drug-delivery-in-lung-cancer-therapy
#5
Cheng-Qiong Luo, Lei Xing, Peng-Fei Cui, Jian-Bin Qiao, Yu-Jing He, Bao-An Chen, Liang Jin, Hu-Lin Jiang
BACKGROUND: The natural compound curcumin (Cur) can regulate growth inhibition and apoptosis in various cancer cell lines, although its clinical applications are restricted by extreme water insolubility and instability. To overcome these hurdles, we fabricated a Cur-coordinated reactive oxygen species (ROS)-responsive nanoparticle using the interaction between boronic acid and Cur. MATERIALS AND METHODS: We synthesized a highly biocompatible 4-(hydroxymethyl) phenylboronic acid (HPBA)-modified poly(ethylene glycol) (PEG)-grafted poly(acrylic acid) polymer (PPH) and fabricated a Cur-coordinated ROS-responsive nanoparticle (denoted by PPHC) based on the interaction between boronic acid and Cur...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28169510/differences-in-internalization-and-growth-of-escherichia-coli-o157-h7-within-the-apoplast-of-edible-plants-spinach-and-lettuce-compared-with-the-model-species-nicotiana-benthamiana
#6
Kathryn M Wright, Louise Crozier, Jacqueline Marshall, Bernhard Merget, Ashleigh Holmes, Nicola J Holden
Internalization of food-borne bacteria into edible parts of fresh produce plants represents a serious health risk. Therefore, internalization of verocytotoxigenic E. coli O157:H7 isolate Sakai was assessed in two species associated with outbreaks, spinach (Spinacia oleracea) and lettuce (Lactuca sativa) and compared to the model species Nicotiana benthamiana. Internalization occurred in the leaves and roots of spinach and lettuce throughout a 10 day time-course. The plant species, tissue type and inoculum dose all impacted the outcome...
February 7, 2017: Microbial Biotechnology
https://www.readbyqxmd.com/read/28167265/curcumin-complexation-with-cyclodextrins-by-the-autoclave-process-method-development-and-characterization-of-complex-formation
#7
Turki Al Hagbani, Sami Nazzal
One approach to enhance curcumin (CUR) aqueous solubility is to use cyclodextrins (CDs) to form inclusion complexes where CUR is encapsulated as a guest molecule within the internal cavity of the water-soluble CD. Several methods have been reported for the complexation of CUR with CDs. Limited information, however, is available on the use of the autoclave process (AU) in complex formation. The aims of this work were therefore to (1) investigate and evaluate the AU cycle as a complex formation method to enhance CUR solubility; (2) compare the efficacy of the AU process with the freeze-drying (FD) and evaporation (EV) processes in complex formation; and (3) confirm CUR stability by characterizing CUR:CD complexes by NMR, Raman spectroscopy, DSC, and XRD...
February 5, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28161536/enhancement-of-curcumin-wound-healing-ability-by-complexation-with-2-hydroxypropyl-%C3%AE-cyclodextrin-in-sacran-hydrogel-film
#8
Nasrul Wathoni, Keiichi Motoyama, Taishi Higashi, Maiko Okajima, Tatsuo Kaneko, Hidetoshi Arima
Curcumin is one of promising agents to accelerate the wound-healing process. However, the efficacy of curcumin is limited due to its poor water solubility and stability. To enhance the properties of curcumin, 2-hydroxypropyl-γ-cyclodextrin (HP-γ-CyD) can be used through complexation. Recently, we revealed that sacran has the potential to form a hydrogel film (HGF) as a wound dressing material. Therefore, in the present study, we investigated the wound healing ability of curcumin/HP-γ-CyD (Cur/HP-γ-CyD) complex in sacran-based HGF (Sac-HGF)...
February 2, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28159921/curcumin-blocks-autophagy-and-activates-apoptosis-of-malignant-mesothelioma-cell-lines-and-increases-the-survival-of-mice-intraperitoneally-transplanted-with-a-malignant-mesothelioma-cell-line
#9
Laura Masuelli, Monica Benvenuto, Enrica Di Stefano, Rosanna Mattera, Massimo Fantini, Giuseppina De Feudis, Enrico De Smaele, Ilaria Tresoldi, Maria Gabriella Giganti, Andrea Modesti, Roberto Bei
Malignant mesothelioma (MM) is a primary tumor arising from the serous membranes. The resistance of MM patients to conventional therapies, and the poor patients' survival, encouraged the identification of molecular targets for MM treatment. Curcumin (CUR) is a "multifunctional drug". We explored the in vitro effects of CUR on cell proliferation, cell cycle regulation, pro-survival signaling pathways, apoptosis, autophagy of human (MM-B1, H-Meso-1, MM-F1), and mouse (#40a) MM cells. In addition, we evaluated the in vivo anti-tumor activities of CUR in C57BL/6 mice intraperitoneally transplanted with #40a cells forming ascites...
30, 2017: Oncotarget
https://www.readbyqxmd.com/read/28156175/docosahexaenoic-acid-mediated-targeted-and-sustained-brain-delivery-of-curcumin-microemulsion
#10
Rajshree L Shinde, Padma V Devarajan
We disclose microemulsions (ME) of curcumin (CUR) with docosahexaenoic acid (DHA)-rich oil (CUR DHA ME) for targeted delivery to the brain. MEs of CUR (5 mg/mL) with and without DHA-rich oil (CUR Capmul ME) suitable for intravenous and intranasal administration exhibited negative zeta potential, globule size  <20 nm and good stability. Following intravenous delivery MEs exhibited high brain concentration with CUR DHA ME exhibiting a 2.8-fold higher Cmax than CUR solution. Furthermore, high and sustained concentration was demonstrated even at 24 h, which was 8- and 2-fold higher than CUR solution and CUR Capmul ME, respectively...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28156166/formulation-in-vitro-characterization-and-clinical-evaluation-of-curcumin-in-situ-gel-for-treatment-of-periodontitis
#11
Maha M A Nasra, Heba M Khiri, Heba A Hazzah, Ossama Y Abdallah
This study aimed to develop syringeable in-situ curcumin (cur) gel for the treatment of periodontal pockets as well as to evaluate the clinical efficacy of Cur in-situ gel formulation. Different in-situ gel formulations of Cur were prepared using 30% of pluronic F127, and 1% of carbopol P934. The formulations were evaluated regarding gelation temperature, pH, viscosity, syringeability study, in-vitro release and chemical stability of cur. The effect of aging of gel formulations for 3months in refrigerator was investigated...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28156164/cholesterol-conjugated-poly-d-l-lactide-based-micelles-as-a-nanocarrier-system-for-effective-delivery-of-curcumin-in-cancer-therapy
#12
Preeti Kumari, Omkara Swami Muddineti, Sri Vishnu Kiran Rompicharla, Pratyusha Ghanta, Adithya Karthik B B N, Balaram Ghosh, Swati Biswas
Polymeric micelles have been widely explored preclinically as suitable delivery systems for poorly soluble chemotherapeutic drugs in cancer therapy. The present study reported the development of cholesterol (Ch)-conjugated poly(D,L-Lactide) (PLA)-based polymeric micelles (mPEG-PLA-Ch) for effective encapsulation and delivery of curcumin (CUR) at the tumor site. Cholesterol conjugation dramatically affected the particle size and improved drug loading (DL) and encapsulation efficiency (EE). mPEG-PLA-Ch-CUR showed bigger hydrodynamic diameter (104...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28156160/orally-delivered-polycurcumin-responsive-to-bacterial-reduction-for-targeted-therapy-of-inflammatory-bowel-disease
#13
Hongzhi Qiao, Dong Fang, Jing Chen, Yuan Sun, Chen Kang, Liuqing Di, Junsong Li, Zhipeng Chen, Jun Chen, Yahan Gao
Inflammatory bowel disease (IBD) such as Crohn's disease and ulcerative colitis is a chronic autoimmune disease affecting nearly five million people worldwide. Among all drug delivery system, oral administration is the most preferable route for colon-specific targeting and the treatment of IBD. Herein, an amphiphilic curcumin polymer (PCur) composed of hydrophilic poly(ethylene glycol) (PEG) and hydrophobic curcumin (Cur) linked by disulfide bond was synthesized and characterized. The sufficient solubility, nano-scaled size and close to the neutral surface potential of PCur lead to preferential accumulation of the active drug in the inflamed regions of the gut...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28155567/high-drug-payload-curcumin-nanosuspensions-stabilized-by-mpeg-dspe-and-spc-in-vitro-and-in-vivo-evaluation
#14
Jingyi Hong, Yingying Liu, Yao Xiao, Xiaofeng Yang, Wenjing Su, Mingzhu Zhang, Yonghong Liao, Haixue Kuang, Xiangtao Wang
CONTEXT: Curcumin (CUR) is a promising drug candidate based on its broad bioactivities and good antitumor effect, but the application of CUR is potentially restricted because of its poor solubility and bioavailability. OBJECTIVE: This study aims at developing a simple and effective drug delivery system for CUR to enhance its solubility and bioavailability thus to improve its antitumor efficacy. MATERIALS AND METHODS: Curcumin nanosuspensions (CUR-NSps) were prepared by precipitation-ultrasonication method using mPEG2000-DSPE and soybean lecithin as a combined stabilizer...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28155248/mutants-in-the-imprinted-pickle-related-2-gene-suppress-seed-abortion-of-fertilization-independent-seed-class-mutants-and-paternal-excess-interploidy-crosses-in-arabidopsis
#15
Fang Huang, Qian-Hao Zhu, Anyu Zhu, Xiaoba Wu, Liqiong Xie, Xianjun Wu, Chris Helliwell, Abed Chaudhury, E Jean Finnegan, Ming Luo
Endosperm cellularization is essential for embryo development and viable seed formation. Loss of function of the FERTILIZATION INDEPENDENT SEED (FIS) class Polycomb genes, which mediate histone H3 lysine27 trimethylation (H3K27me3), as well as imbalanced contributions of parental genomes interrupt this process. What causes the failure of cellularization is poorly understood. In this study, we identified PICKLE RELATED 2 (PKR2), mutations which suppress seed abortion in fis1/mea by restoring endosperm cellularization...
February 3, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28152473/combination-of-arabinogalactan-and-curcumin-induces-apoptosis-in-breast-cancer-cells-in-vitro-and-inhibits-tumor-growth-via-overexpression-of-p53-level-in-vivo
#16
Hassan Moghtaderi, Houri Sepehri, Farnoosh Attari
PURPOSE: Increased mortality associated with breast cancer in women has spurred the studies to develop new drugs. Arabinogalactan (AG) and curcumin (Cur) are two natural products broadly explored in cancer therapy. Our major goal in the current study was to assess anticancer properties of combination these reagents in vitro on human breast cancer cells and in vivo utilizing animal model of breast cancer. EXPERIMENTAL DESIGN: We evaluated cell proliferation, apoptosis, cell cycle, and protein expression in vitro on MDA-MB-231 human breast cancer cells...
January 29, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28145827/thermoresponsive-curcumin-dsirna-nanoparticle-gels-for-the-treatment-of-diabetic-wounds-synthesis-and-drug-release
#17
Haliza Katas, Chai Yi Wen, Muhammad Irfan Siddique, Zahid Hussain, Fatin Hanini Mohd Fadhil
AIM: Chitosan (CS) has been extensively studied as drug delivery systems for wound healing. Results/methodology: CS nanoparticles were loaded with curcumin (Cur) and DsiRNA against prostaglandin transporter gene and they were incorporated into 20 and 25% w/v Pluronic F-127. The gels were later analyzed for their rheology, gelation temperature (Tgel), morphology, drug incorporation and in vitro drug release. The particle size was in the range of 231 ± 17-320 ± 20 nm, depending on CS concentration...
January 2017: Therapeutic Delivery
https://www.readbyqxmd.com/read/28138535/ultra-smooth-glassy-graphene-thin-films-for-flexible-transparent-circuits
#18
Xiao Dai, Jiang Wu, Zhicheng Qian, Haiyan Wang, Jie Jian, Yingjie Cao, Mark H Rummeli, Qinghua Yi, Huiyun Liu, Guifu Zou
Large-area graphene thin films are prized in flexible and transparent devices. We report on a type of glassy graphene that is in an intermediate state between glassy carbon and graphene and that has high crystallinity but curly lattice planes. A polymer-assisted approach is introduced to grow an ultra-smooth (roughness, <0.7 nm) glassy graphene thin film at the inch scale. Owing to the advantages inherited by the glassy graphene thin film from graphene and glassy carbon, the glassy graphene thin film exhibits conductivity, transparency, and flexibility comparable to those of graphene, as well as glassy carbon-like mechanical and chemical stability...
November 2016: Science Advances
https://www.readbyqxmd.com/read/28138525/adhesion-mechanisms-of-curli-subunit-csga-to-abiotic-surfaces
#19
Elizabeth P DeBenedictis, Jenny Liu, Sinan Keten
Curli fibers are functional amyloids that play a key role in biofilm structure and adhesion to various surfaces. Strong bioinspired adhesives comprising curli fibers have recently been created; however, the mechanisms curli uses to attach onto abiotic surfaces are still uncharacterized. Toward a materials-by-design approach for curli-based adhesives and multifunctional materials, we examine curli subunit adsorption onto graphene and silica surfaces through atomistic simulation. We find that both structural features and sequence influence adhesive strength, enabling the CsgA subunit to adhere strongly to both polar and nonpolar surfaces...
November 2016: Science Advances
https://www.readbyqxmd.com/read/28133046/-preoperative-prognostic-nutritional-index-in-elderly-patients-over-80-years-old-who-underwent-curative-resection-for-colorectal-cancer
#20
Kazuhiko Yoshimatsu, Hajime Yokomizo, Yuki Yano, Sachiyo Okayama, Akiko Sakuma, Masaya Satake, Masano Sagawa, Atsuo Matsumoto, Takashi Fjimoto, Shinichi Asaka, Takebumi Usui, Kentaro Yamaguchi, Shunichi Shiozawa, Takeshi Shimakawa, Takao Katsube, Hiroyuki Kato, Yoshihiko Naritaka
PATIENTS AND METHODS: From 2001, cases of 76 patients who underwent Cur A resection for colorectal cancer and preoperative prognostic nutritional index (PNI) assessment were analyzed in terms of clinicopathological factors, surgical outcomes, and prognosis. RESULTS: Median age of the 36 men and 40 women included in the study was 83 years. Median PNI was 42.1. Twenty-four patients had a PNI below 40. There were 36 patients with pulmonary dysfunction, and 60 patients with D2 or wider LN dissection...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
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