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https://www.readbyqxmd.com/read/27917369/management-of-multiple-myeloma-and-usage-of-bortezomib-perspective-from-india-and-ukraine
#1
Amit Garg, Mykhaylo Morgunskyy, Yogesh Belagali, Namita Gupta, Shyam Prasad Akku
Novel treatment strategies have remarkably improved the multiple myeloma (MM) patients' survival, with associated increased costs. A joint panel meet of international experts from India and Ukraine was held in New Delhi on May 19, 2016 focusing on MM management, bortezomib role, unmet medical needs, and current challenges. The health-care system for oncology in India is majorly private vs. government-based in Ukraine. In India, electrophoresis, serum-free light chain assays, bone marrow tests, and X-rays are available modes of diagnosis...
2016: Frontiers in Oncology
https://www.readbyqxmd.com/read/27916903/combined-use-of-zoledronic-acid-augments-ursolic-acid-induced-apoptosis-in-human-osteosarcoma-cells-through-enhanced-oxidative-stress-and-autophagy
#2
Chia-Chieh Wu, Yi-Fu Huang, Chen-Pu Hsieh, Pin-Ju Chueh, Yao-Li Chen
Ursolic acid (UA), a naturally occurring pentacyclic triterpene acid found in many medicinal herbs and edible plants, triggers apoptosis in several tumor cell lines but not in human bone cancer cells. Most recently, we have demonstrated that UA exposure reduces the viability of human osteosarcoma MG-63 cells through enhanced oxidative stress and apoptosis. Interestingly, an inhibitor of osteoclast-mediated bone resorption, zoledronic acid (ZOL), also a third-generation nitrogen-containing bisphosphonate, is effective in the treatment of bone metastases in patients with various solid tumors...
November 30, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27911858/the-antidepressant-fluoxetine-induces-necrosis-by-energy-depletion-and-mitochondrial-calcium-overload
#3
Emilie Charles, Mehdi Hammadi, Philippe Kischel, Vanessa Delcroix, Nicolas Demaurex, Cyril Castelbout, Anne-Marie Vacher, Anne Devin, Thomas Ducret, Paula Nunes, Pierre Vacher
Selective Serotonin Reuptake Inhibitor antidepressants, such as fluoxetine (Prozac), have been shown to induce cell death in cancer cells, paving the way for their potential use as cancer therapy. These compounds are able to increase cytosolic calcium concentration ([Ca2+]cyt), but the involved mechanisms and their physiological consequences are still not well understood. Here, we show that fluoxetine induces an increase in [Ca2+]cyt by emptying the endoplasmic reticulum (ER) through the translocon, an ER Ca2+ leakage structure...
November 29, 2016: Oncotarget
https://www.readbyqxmd.com/read/27906510/thermohydrogel-containing-melanin-for-photothermal-cancer-therapy
#4
Miri Kim, Hyun Soo Kim, Min Ah Kim, Hyanghwa Ryu, Hwan-Jeong Jeong, Chang-Moon Lee
Melanin is an effective absorber of light and can extend to near infrared (NIR) regions. In this study, a natural melanin is presented as a photothermal therapeutic agent (PTA) because it provides a good photothermal conversion efficiency, shows biodegradability, and does not induce long-term toxicity during retention in vivo. Poloxamer solution containing melanin (Pol-Mel) does not show any precipitation and shows sol-gel transition at body temperature. After irradiation from 808 nm NIR laser at 1.5 W cm(-2) for 3 min, the photothermal conversion efficiency of Pol-Mel is enough to kill cancer cells in vitro and in vivo...
December 1, 2016: Macromolecular Bioscience
https://www.readbyqxmd.com/read/27903435/lack-of-effect-of-selected-sunscreens-applied-on-ex-vivo-human-skin-for-5-methyl-aminolevulinic-acid-penetration-and-protoporphyrin-ix-photoactivation
#5
Hanan Osman-Ponchet, Karine Sevin, Alexandre Gaborit, Magali Kouidhi, Johanna Hanaizi, Pierre Comby, Bernard Ruty, Guy Bouvier
BACKGROUND: Photodynamic therapy (PDT) is a successful treatment for non-melanoma skin cancers. Methyl-aminolevulinate (MAL) is metabolized to protoporphyrin IX (PpIX) which accumulates in the skin lesion and which generates a painful photochemical toxic reaction upon red light exposure. PDT using daylight (DL) exposure is now used to reduce pain and subjects are advised to protect the areas with sunscreen. This work investigated the effect of sunscreen on MAL penetration and PpIX photoactivation in ex vivo human skin...
November 26, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/27895792/microrna-199a-5p-inhibits-cisplatin-induced-drug-resistance-via-inhibition-of-autophagy-in-osteosarcoma-cells
#6
Yusheng Li, Wei Jiang, Yuling Hu, Zixun Da, Chao Zeng, Min Tu, Zhenhan Deng, Wenfeng Xiao
Osteosarcoma (OS) is the most common cancer of the bone. Chemotherapy is commonly used for the clinical treatment of OS. However, chemoresistance to cisplatin [also known as diamminedichloridoplatinum (II) (DDP)] is a major obstacle for OS therapy, the underlying mechanism of which is not fully understood. The present study aimed to investigate the role of microRNA (miR)-199a-5p in the regulation of chemoresistance to DDP in OS cells. Reverse transcription-quantitative polymerase chain reaction demonstrated that the expression level of miR-199a-5p was significantly reduced in human OS MG63 cells...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27895377/frequency-and-predictors-of-recurrence-of-bladder-tumour-on-first-check-cystoscopy-a-tertiary-care-hospital-experience
#7
Muhammad Farhan, Syed Muhammad Nazim, Jibran Ahmed, Muhammad Hammad Ather
OBJECTIVE: To determine the frequency and predictors of non-muscle invasive bladder tumour recurrence on first-check cystoscopy after transurethral resection of bladder tumour. METHODS: This cross-sectional study was conducted at the Aga Khan University Hospital, Karachi, from April to November 2014, and comprised patients with a suspected newly-diagnosed urothelial cancer. Patients with non-muscle invasive disease with complete resection of all visible lesions along with deep biopsy from the tumour base were included...
October 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/27888616/ccl2-egf-positive-feedback-loop-between-cancer-cells-and-macrophages-promotes-cell-migration-and-invasion-in-head-and-neck-squamous-cell-carcinoma
#8
Lu Gao, Feng-Qin Wang, Hui-Min Li, Jie-Gang Yang, Jian-Gang Ren, Ke-Fei He, Bing Liu, Wei Zhang, Yi-Fang Zhao
Head and neck squamous cell carcinoma (HNSCC) represents the most frequent malignancy in the head and neck region, and the survival rate has not been improved significantly over the past three decades. It has been reported the infiltrated macrophages contribute to the malignant progression of HNSCC. However, the crosstalk between macrophages and cancer cells remains poorly understood. In the present study, we explored interactions between monocytes/macrophages and HNSCC cells by establishing the direct co-culture system, and found that the crosstalk promoted the migration and invasion of cancer cells by enhancing the invadopodia formation through a CCL2/EGF positive feedback loop...
November 23, 2016: Oncotarget
https://www.readbyqxmd.com/read/27886411/dog-ownership-and-physical-activity-among-breast-prostate-and-colorectal-cancer-survivors
#9
Cynthia C Forbes, Chris M Blanchard, W Kerry Mummery, Kerry S Courneya
BACKGROUND: Dog ownership has been associated with higher rates of physical activity (PA) in several populations but no study to date has focused on cancer survivors. The purpose of this study was to examine the associations between dog ownership and PA among cancer survivors; and to examine correlates of dog ownership. METHODS: A stratified random sample of 2062 breast (BCS), prostate (PCS), and colorectal cancer survivors (CRCS) was mailed a questionnaire assessing PA, social-cognitive, dog ownership, demographic, and medical variables...
November 25, 2016: Psycho-oncology
https://www.readbyqxmd.com/read/27882308/prognostic-impact-of-autophagy-biomarkers-for-cutaneous-melanoma
#10
REVIEW
Diana Y L Tang, Robert A Ellis, Penny E Lovat
Prognosis and survival for malignant melanoma is highly dependent on early diagnosis and treatment. While the American Joint Committee on Cancer (AJCC) criterion provides a means of staging melanomas and guiding treatment approaches, it is unable to identify the risk of disease progression of early stage tumors or provide reliable stratification for novel adjuvant therapies. The demand for credible prognostic/companion biomarkers able to identify high-risk melanoma subgroups as well as guide more effective personalized/precision-based therapy is therefore of paramount importance...
2016: Frontiers in Oncology
https://www.readbyqxmd.com/read/27877881/crosslinked-duplex-dna-nanogels-that-target-specified-proteins
#11
Yasuhiko Iwasaki, Jun-Ichi Kondo, Akinori Kuzuya, Rui Moriyama
Specific detection of protein biomarkers plays an important role in diagnostics and therapeutics. We have fabricated polymeric nanogels, which can specifically interact with the cancer biomarker thrombin to serve as a model. Two types of 2-methacryloyloxyethyl phosphorylcholine (MPC) copolymers bearing a thrombin-binding oligonucleotide aptamer and its complementary chain were independently synthesized by redox-initiated radical polymerization. These MPC polymers associate in a complimentary fashion due to double strand formation of the oligonucleotides in aqueous media, leading to the spontaneous formation of spherical nanogels...
2016: Science and Technology of Advanced Materials
https://www.readbyqxmd.com/read/27877235/x-ray-induced-photodynamic-therapy-a-combination-of-radiotherapy-and-photodynamic-therapy
#12
Geoffrey D Wang, Ha T Nguyen, Hongmin Chen, Phillip B Cox, Lianchun Wang, Koichi Nagata, Zhonglin Hao, Andrew Wang, Zibo Li, Jin Xie
Conventional photodynamic therapy (PDT)'s clinical application is limited by depth of penetration by light. To address the issue, we have recently developed X-ray induced photodynamic therapy (X-PDT) which utilizes X-ray as an energy source to activate a PDT process. In addition to breaking the shallow tissue penetration dogma, our studies found more efficient tumor cell killing with X-PDT than with radiotherapy (RT) alone. The mechanisms behind the cytotoxicity, however, have not been elucidated. In the present study, we investigate the mechanisms of action of X-PDT on cancer cells...
2016: Theranostics
https://www.readbyqxmd.com/read/27874144/a-novel-photosensitizer-an-l-glutamide-lipid-conjugate-with-improved-properties-for-photodynamic-therapy
#13
Erica Nathan, K Vijayashree, A Harikrishna, Makoto Takafuji, Hirokuni Jintoku, Hirotaka Ihara, N M Rao
Photosensitizers (PS) are used in photodynamic therapy to treat several cancers. The efficacy of photodynamic therapy (PDT) could be further improved by overcoming aggregation-dependent quenching of PS and by improving the biodistribution of the PS. In this work we attempted to overcome these issues by conjugating a PS with a lipid molecule and tested the liposomes prepared with this PS conjugated lipid for PDT. A novel lipid-porphyrin conjugate (1 : 1) was synthesized by attaching a PS, 5-(4-methoxycarbonylphenyl)-10,15,20-triphenyl-(21)H,(23)H-porphine, to the head group of a glutamide lipid...
November 30, 2016: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/27858548/cancer-cachexia-beyond-weight-loss
#14
Andrew R Bruggeman, Arif H Kamal, Thomas W LeBlanc, Joseph D Ma, Vickie E Baracos, Eric J Roeland
Cancer cachexia is a multifactorial syndrome characterized by skeletal muscle loss leading to progressive functional impairment. Despite the ubiquity of cachexia in clinical practice, prevention, early identification, and intervention remain challenging. The impact of cancer cachexia on quality of life, treatment-related toxicity, physical function, and mortality are well established; however, establishing a clinically meaningful definition has proven challenging because of the focus on weight loss alone. Attempts to more comprehensively define cachexia through body composition, physical functioning, and molecular biomarkers, while promising, are yet to be routinely incorporated into clinical practice...
November 2016: Journal of Oncology Practice
https://www.readbyqxmd.com/read/27853305/tropomyosin-receptor-kinase-c-targeted-delivery-of-a-peptidomimetic-ligand-photosensitizer-conjugate-induces-antitumor-immune-responses-following-photodynamic-therapy
#15
Chin Siang Kue, Anyanee Kamkaew, Siew Hui Voon, Lik Voon Kiew, Lip Yong Chung, Kevin Burgess, Hong Boon Lee
Tropomyosin receptor kinase C (TrkC) targeted ligand-photosensitizer construct, IYIY-diiodo-boron-dipyrromethene (IYIY-I2-BODIPY) and its scrambled counterpart YIYI-I2-BODIPY have been prepared. IYIY-I2-BODIPY binds TrkC similar to neurotrophin-3 (NT-3), and NT-3 has been reported to modulate immune responses. Moreover, it could be shown that photodynamic therapy (PDT) elevates antitumor immune responses. This prompted us to investigate the immunological impacts mediated by IYIY-I2-BODIPY in pre- and post-PDT conditions...
November 17, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27827890/in-vitro-photodynamic-effect-of-phycocyanin-against-breast-cancer-cells
#16
Subramaniyan Bharathiraja, Hansu Seo, Panchanathan Manivasagan, Madhappan Santha Moorthy, Suhyun Park, Jungwan Oh
C-phycocyanin, a natural blue-colored pigment-protein complex was explored as a novel photosensitizer for use in low-level laser therapy under 625-nm laser illumination. C-phycocyanin produced singlet oxygen radicals and the level of reactive oxygen species (ROS) were raised in extended time of treatment. It did not exhibit any visible toxic effect in the absence of light. Under 625-nm laser irradiation, c-phycocyanin generated cytotoxic stress through ROS induction, which killed MDA-MB-231 breast cancer cells depending on concentrations...
November 3, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27811353/the-influence-of-patient-related-constutional-and-environmental-factors-on-early-results-of-a-combined-modality-therapy-of-esophageal-cancer
#17
Kamil Pudło, Alan Błotniak, Tomasz Skoczylas, Andrzej Dąbrowski, Andrzej Szawłowski, Mirosław Kozłowski, Paweł Lampe, Grzegorz Wallner
: Among many various factors affecting the outcome of cancer treatment one can distinguish patient, tumor- and treatment-related factors. The association of patient-related factors and results of a combined modality therapy of esophageal cancer has not been extensively explored. The aim of the study was to analyze the impact of patient-related constitutional and environmental factors on early results of combined modality therapy of esophageal squamous cell carcinoma. MATERIAL AND METHODS: We retrospectively analyzed prospectively collected data of 84 patients with esophageal cancer randomly assigned to a combined modality treatment...
October 1, 2016: Polski Przeglad Chirurgiczny
https://www.readbyqxmd.com/read/27809520/simultaneous-time-dependent-surface-enhanced-raman-spectroscopy-metabolomics-and-proteomics-reveal-cancer-cell-death-mechanisms-associated-with-au-nanorod-photo-thermal-therapy
#18
Moustafa R K Ali, Yue Wu, Tiegang Han, Xiaoling Zang, Haopeng Xiao, Yan Tang, Ronghu Wu, Facundo M Fernandez, Mostafa A El-Sayed
In cancer plasmonic photothermal therapy (PPTT), plasmonic nanoparticles are used to convert light into localized heat leading to cancer cell death. Among plasmonic nanoparticles, gold nanorods (AuNRs) with specific dimensions so as to absorb the near-infrared (NIR) laser light have been widely used. The detailed mechanism of PPTT therapy, however, still remains poorly understood. Typically, surface enhanced Raman spectroscopy (SERS) has been used to detect time-dependent changes in the intensity of the vibration frequencies of molecules that appear or disappear during different cellular processes...
November 3, 2016: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/27809305/chronic-activation-of-the-d156a-point-mutant-of-channelrhodopsin-2-signals-apoptotic-cell-death-the-good-and-the-bad
#19
Michael Perny, Lukas Muri, Heather Dawson, Sonja Kleinlogel
Channelrhodopsin-2 (ChR2) has become a celebrated research tool and is considered a promising potential therapeutic for neurological disorders. While making its way into the clinic, concerns about the safety of chronic ChR2 activation have emerged; in particular as the high-intensity blue light illumination needed for ChR2 activation may be phototoxic. Here we set out to quantify for the first time the cytotoxic effects of chronic ChR2 activation. We studied the safety of prolonged illumination on ChR2(D156A)-expressing human melanoma cells as cancer cells are notorious for their resistance to killing...
November 3, 2016: Cell Death & Disease
https://www.readbyqxmd.com/read/27796397/luminescent-ruthenium-polypyridyl-complexes-with-extended-dppz-like-ligands-as-dna-targeting-binders-and-cellular-agents
#20
Bjørn C Poulsen, Sandra Estalayo-Adrián, Salvador Blasco, Sandra A Bright, John M Kelly, D Clive Williams, Thorfinnur Gunnlaugsson
Four new Ru(ii) polypyridyl complexes that contain an extended aromatic moiety derived from pyrazino[2,3-h]dipyrido[3,2-a:2',3'-c]phenazine and either 1,10-phenanthroline (phen) or 1,4,5,8-tetraazaphenanthrene (TAP) have been synthesized, their solid state X-ray crystal structure determined and their photophysical and biological properties evaluated. Their interactions with DNA have been studied, and they have been tested for their potential as photodynamic therapeutic (PDT) agents in the treatment of cancer...
October 31, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
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