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Light therapy NOT cancer

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https://www.readbyqxmd.com/read/28441605/biological-effects-and-medical-applications-of-infrared-radiation
#1
Shang-Ru Tsai, Michael R Hamblin
Infrared (IR) radiation is electromagnetic radiation with wavelengths between 760nm and 100,000nm. Low-level light therapy (LLLT) or photobiomodulation (PBM) therapy generally employs light at red and near-infrared wavelengths (600-100nm) to modulate biological activity. Many factors, conditions, and parameters influence the therapeutic effects of IR, including fluence, irradiance, treatment timing and repetition, pulsing, and wavelength. Increasing evidence suggests that IR can carry out photostimulation and photobiomodulation effects particularly benefiting neural stimulation, wound healing, and cancer treatment...
April 13, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28439752/mathematical-modeling-of-cellular-cross-talk-between-endothelial-and-tumor-cells-highlights-counterintuitive-effects-of-vegf-targeted-therapies
#2
Harsh Jain, Trachette Jackson
Tumor growth and progression are critically dependent on the establishment of a vascular support system. This is often accomplished via the expression of pro-angiogenic growth factors, including members of the vascular endothelial growth factor (VEGF) family of ligands. VEGF ligands are overexpressed in a wide variety of solid tumors and therefore have inspired optimism that inhibition of the different axes of the VEGF pathway-alone or in combination-would represent powerful anti-angiogenic therapies for most cancer types...
April 24, 2017: Bulletin of Mathematical Biology
https://www.readbyqxmd.com/read/28435257/effects-of-arginine-glycine-aspartic-acid-peptide-conjugated-quantum-dots-induced-photodynamic-therapy-on-pancreatic-carcinoma-in-vivo
#3
Ming-Ming Li, Jia Cao, Jia-Chun Yang, Yu-Jie Shen, Xiao-Lei Cai, Yuan-Wen Chen, Chun-Ying Qu, Yi Zhang, Feng Shen, Lei-Ming Xu
Quantum dots (QDs) conjugated with integrin antagonist arginine-glycine-aspartic acid (RGD) peptides (QDs-RGD) are novel nanomaterials with a unique optical property: a high molar extinction coefficient. Previously, we have shown that QDs-RGD demonstrate a photodynamic therapy (PDT) effect as new photosensitizers for the pancreatic cancer cell line SW1990 in vitro. Here, we investigate the application of QDs-RGD in mice bearing pancreatic tumors using PDT. To ensure that more photosensitizers accumulated in tumors, QDs-RGD were injected intratumorally...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28429751/preclinical-study-of-raav2-strail-pharmaceutical-efficacy-biodistribution-and-safety-in-animals
#4
Q Ru, W Li, X Wang, S Zhang, L Chen, Y Zhang, Y Ge, Y Zu, Y Liu, D Zheng
The recombinant sTRAIL has been in clinical trial for various human malignancies. However, the half-life time of sTRAIL is very short, which might be an important factor influencing its clinical efficacy for cancer therapy. We previously reported the recombinant adeno-associated virus (AAV)-encoding sTRAIL95-281-mediated sTRAIL expression in vivo up to 8 months and suppressed tumor growth markedly in mouse xenografts. In the present study, we further evaluated the clinical potency for cancer gene therapy and the safety in mouse and non-human primates...
April 21, 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/28429726/verteporfin-induced-formation-of-protein-cross-linked-oligomers-and-high-molecular-weight-complexes-is-mediated-by-light-and-leads-to-cell-toxicity
#5
Eleni K Konstantinou, Shoji Notomi, Cassandra Kosmidou, Katarzyna Brodowska, Ahmad Al-Moujahed, Fotini Nicolaou, Pavlina Tsoka, Evangelos Gragoudas, Joan W Miller, Lucy H Young, Demetrios G Vavvas
Verteporfin (VP) was first used in Photodynamic therapy, where a non-thermal laser light (689 nm) in the presence of oxygen activates the drug to produce highly reactive oxygen radicals, resulting in local cell and tissue damage. However, it has also been shown that Verteporfin can have non-photoactivated effects such as interference with the YAP-TEAD complex of the HIPPO pathway, resulting in growth inhibition of several neoplasias. More recently, it was proposed that, another non-light mediated effect of VP is the formation of cross-linked oligomers and high molecular weight protein complexes (HMWC) that are hypothesized to interfere with autophagy and cell growth...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28420213/folate-decorated-nanomicelles-loaded-with-a-potent-curcumin-analogue-for-targeting-retinoblastoma
#6
Hashem Alsaab, Rami M Alzhrani, Prashant Kesharwani, Samaresh Sau, Sai Hs Boddu, Arun K Iyer
The aim of this study was to develop a novel folate receptor-targeted drug delivery system for retinoblastoma cells using a promising anticancer agent, curcumin-difluorinated (CDF), loaded in polymeric micelles. Folic acid was used as a targeting moiety to enhance the targeting and bioavailability of CDF. For this purpose, amphiphilic poly(styrene-co-maleic acid)-conjugated-folic acid (SMA-FA) was synthesized and utilized to improve the aqueous solubility of a highly hydrophobic, but very potent anticancer compound, CDF, and its targeted delivery to folate overexpressing cancers...
April 18, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/28413468/antitumor-effect-of-sunitinib-in-human-prostate-cancer-cells-functions-via-autophagy
#7
Bangqi Wang, Dongyuan Lu, Min Xuan, Weilie Hu
The aim of the present study was to explore sunitinib-induced autophagic effects and the specific molecular mechanisms involved, in vitro, using PC-3 and LNCaP human prostate cancer cell lines. Cells were exposed to escalating doses of sunitinib treatment and subsequent cell viability and cell cycle analyses were performed to evaluate the inhibitory effect of sunitinib in vitro. Immunofluorescence staining of microtubule associated protein 1A/1B-light chain 3 (LC3) puncta was employed to assess autophagy levels after sunitinib treatment...
April 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28412401/proteasome-inhibitor-loaded-micelles-enhance-antitumor-activity-through-macrophage-reprograming-by-nf-%C3%AE%C2%BAb-inhibition
#8
Hailiang Wu, Anqi Tao, John D Martin, Sabina Quader, Xueying Liu, Kei Takahashi, Louise Hespel, Yutaka Miura, Yoshihiro Hayakawa, Tatsuro Irimura, Horacio Cabral, Kazunori Kataoka
Macrophage reprogramming towards a tumor attacking phenotype is a promising treatment strategy, yet such strategies are scarce and it is not clear how to combine them with cytotoxic therapies that are often used to treat solid tumors. Here, we evaluate whether a micelle-encapsulated proteasome inhibitor, i.e. the peptide aldehyde drug MG132, which is cytotoxic to cancer cells, can reprogram macrophages to attack the tumor. Through in vitro studies, we demonstrated that the proteasome inhibition reduces nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) signaling - a known promoter of tumor-supporting macrophages and chemoresistance - in both cancer cells and macrophages...
April 12, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28410405/real-world-treatment-patterns-for-patients-receiving-second-line-and-third-line-treatment-for-advanced-non-small-cell-lung-cancer-a-systematic-review-of-recently-published-studies
#9
Jessica Davies, Manali Patel, Cesare Gridelli, Filippo de Marinis, Daniel Waterkamp, Margaret E McCusker
Most patients with advanced non-small cell lung cancer (NSCLC) have a poor prognosis and receive limited benefit from conventional treatments, especially in later lines of therapy. In recent years, several novel therapies have been approved for second- and third-line treatment of advanced NSCLC. In light of these approvals, it is valuable to understand the uptake of these new treatments in routine clinical practice and their impact on patient care. A systematic literature search was conducted in multiple scientific databases to identify observational cohort studies published between January 2010 and March 2017 that described second- or third-line treatment patterns and clinical outcomes in patients with advanced NSCLC...
2017: PloS One
https://www.readbyqxmd.com/read/28407986/intravenous-bisphosphonate-therapy-does-not-thicken-cementum-or-change-periodontal-ligaments-of-cancer-patients
#10
Mariana de Pauli Paglioni, Wagner Gomes Silva, Juliana Pereira, César Augusto Migliorati, Marcio Ajudarte Lopes, Oslei Paes de Almeida, Mario Fernando Goes, Ana Carolina Prado Ribeiro, Thais Bianca Brandão, Alan Roger Santos-Silva
OBJECTIVE: To test the hypothesis that intravenous (IV) bisphosphonate (BP) therapy thickens or alters the micromorphology of cementum and periodontal ligament (PDL) in cancer patients. STUDY DESIGN: Thirty-two teeth extracted from 24 cancer patients and separated into test (patients who have undergone IV BP therapy, n = 16) and control (patients naive to BP therapy, n = 16) groups were studied. Cementum thickness was measured in 3 different areas of the dental root with polarized light microscopy...
May 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28407493/plasmonic-titanium-nitride-nanoparticles-for-in%C3%A2-vivo-photoacoustic-tomography-imaging-and-photothermal-cancer-therapy
#11
Wenya He, Kelong Ai, Chunhuan Jiang, Yuanyuan Li, Xiangfu Song, Lehui Lu
Titanium nitride, an alternative plasmonic material to gold with unique physiochemical properties, has been widely used in microelectronics, biomedical devices and food-contact applications. However, its potential application in the area of biomedicine has not been effectively explored. With the spectral match of their plasmon resonance band and the biological transparency window as well as good biocompatibility, titanium nitride nanoparticles (TiN NPs) are promising photoabsorbing agents for photothermal therapy (PTT) and photoacoustic imaging...
July 2017: Biomaterials
https://www.readbyqxmd.com/read/28405001/dietary-factors-in-rheumatic-autoimmune-diseases-a-recipe-for-therapy
#12
REVIEW
Shani Dahan, Yahel Segal, Yehuda Shoenfeld
Today, we are facing a new era of digitization in the health care system, and with increased access to health care information has come a growing demand for safe, cost-effective and easy to administer therapies. Dietary habits have a crucial influence on human health, affecting an individual's risk for hypertension, heart disease and stroke, as well as influencing the risk of developing of cancer. Moreover, an individual's lifestyle choices can greatly influence the progression and manifestation of chronic autoimmune rheumatic diseases...
April 13, 2017: Nature Reviews. Rheumatology
https://www.readbyqxmd.com/read/28402624/near-infrared-photochemoimmunotherapy-by-photoactivatable-bifunctional-antibody-drug-conjugates-targeting-her2-positive-cancer
#13
Kimihiro Ito, Makoto Mitsunaga, Takashi Nishimura, Masayuki Saruta, Takeo Iwamoto, Hisataka Kobayashi, Hisao Tajiri
Near-infrared photoimmunotherapy (NIR-PIT) is a new class of molecular targeted cancer therapy based on antibody-photoabsorber conjugates and NIR light irradiation. Recent studies have shown effective tumor control, including that of human epidermal growth factor receptor 2 (HER2)-positive cancer, by selective molecular targeting with NIR-PIT. However, the depth of NIR light penetration limits its use. Trastuzumab emtansine (T-DM1) is an antibody-drug conjugate consisting of the monoclonal antibody trastuzumab linked to the cytotoxic agent maytansinoid DM1...
April 12, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28398024/gonadotropin-releasing-hormone-analogues-for-the-prevention-of-chemotherapy-induced-premature-ovarian-failure-in-breast-cancer-patients
#14
Benedetta Conte, Lucia Del Mastro
Since the survival of patients with cancer has significantly improved, chemotherapy-related premature ovarian failure (POF) in young cancer survivors has become a major issue in oncology. POF is associated with several health-related negative consequences, including menopausal symptoms, increased risk of cardiovascular diseases, osteoporosis, sexual disfunction, and infertility1-5. According to the major international guidelines, embryo/oocyte cryopreservation are the standard procedures for fertility preservation in young cancer women6,7...
April 10, 2017: Minerva Ginecologica
https://www.readbyqxmd.com/read/28382036/in-vivo-imaging-sheds-light-on-immune-cell-migration-and-function-in-cancer
#15
REVIEW
Tommaso Torcellan, Jessica Stolp, Tatyana Chtanova
There is ample evidence for both beneficial and harmful involvement of the immune system in tumor development and spread. Immune cell recruitment to tumors is essential not only for the success of anticancer immune therapies but also for tumor-induced immune suppression. Now that immune-based therapies are playing an increasingly important role in treatment of solid tumors such as metastatic melanomas, precise analysis of the in vivo contributions of different leukocyte subsets in tumor immunity has become an even greater priority...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28379662/the-prostate-after-castration-and-hormone-replacement-in-a-rat-model-structural-and-ultrastructural-analysis
#16
Bruno Felix-Patrício, Alexandre F Miranda, Jorge L Medeiros, Carla B M Gallo, Bianca M Gregório, Diogo B Souza, Waldemar S Costa, Francisco J B Sampaio
PURPOSE: To evaluate if late hormonal replacement is able to recover the prostatic tissue modified by androgenic deprivation. MATERIALS AND METHODS: 24 rats were assigned into a Sham group; an androgen deficient group, submitted to bilateral orchiectomy (Orch); and a group submitted to bilateral orchiectomy followed by testosterone replacement therapy (Orch+T). After 60 days from surgery blood was collected for determination of testosterone levels and the ventral prostate was collected for quantitative and qualitative microscopic analysis...
April 6, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28365423/evaluation-of-theranostic-nanocarriers-for-near-infrared-imaging-and-photodynamic-therapy-on-human-prostate-cancer-cells
#17
Fernanda Z Leandro, Júlia Martins, Aparecida M Fontes, Antonio C Tedesco
This paper evaluates how effectively chloroaluminum phthalocyanine (ClAlPc) entrapped in colloidal nanocarriers, such as nanocapsule (NC) and nanoemulsion (NE), induces photodamage in human prostate cancer cells (LNCaP) during photodynamic therapy (PDT). The MTT cell viability assay showed that both ClAlPc-NC and ClAlPc-NE induced phototoxicity and efficiently killed LNCaP cells at low ClAlPc-NC and ClAlPc-NE concentrations (0.3μgmL(-1)) as well as under low light doses of 4Jcm(-2) and 7Jcm(-2), respectively, upon PDT with a 670-nm diode laser line...
March 21, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28365390/investigation-of-in-vitro-pdt-activities-of-zinc-phthalocyanine-immobilised-tio2-nanoparticles
#18
Fatma Yurt, Mine Ince, Suleyman Gokhan Colak, Kasim Ocakoglu, Ozge Er, Hale Melis Soylu, Cumhur Gunduz, Cigir Biray Avci, Cansu Caliskan Kurt
Phthalocyanines (Pcs) are commonly used as Photosensors (PSs) in Photodynamic Therapy (PDT) applications due to their intense absorption in the far red-near IR spectral region with a high extinction coefficient and high ability for generating singlet oxygen. Pcs targetspecifically tumors, and do not show any considerable toxic effects under the absence of light. In particular, their chemical versatility has allowed the introducion a number of substituent at the periferal or axial positions which provide modulating photophysical properties, increases the solubility of these compounds in organic solvents...
March 29, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28362496/near-infrared-triggered-photodynamic-therapy-with-multi-tasking-upconversion-nanoparticles-in-combination-with-checkpoint-blockade-for-immunotherapy-of-colorectal-cancer
#19
Jun Xu, Ligeng Xu, Chenya Wang, Rong Yang, Qi Zhuang, Xiao Han, Ziliang Dong, Wenwen Zhu, Rui Peng, Zhuang Liu
While immunotherapy has become a highly promising paradigm for cancer treatment in recent years, it has long been recognized that photodynamic therapy (PDT) has the ability to trigger antitumor immune responses. However, conventional PDT triggered by visible light has limited penetration depth, and its generated immune responses may not be robust enough to eliminate tumors. Herein, upconversion nanoparticles (UCNPs) are simultaneously loaded with chlorin e6 (Ce6), a photosensitizer, and imiquimod (R837), a Toll-like-receptor-7 agonist...
March 31, 2017: ACS Nano
https://www.readbyqxmd.com/read/28361862/circulating-tumor-cells-in-breast-cancer-functional-heterogeneity-pathogenetic-and-clinical-aspects
#20
N V Cherdyntseva, N V Litviakov, E V Denisov, P A Gervas, E S Cherdyntsev
Each patient has a unique history of cancer ecosystem development, resulting in intratumor heterogeneity. In order to effectively kill the tumor cells by chemotherapy, dynamic monitoring of driver molecular alterations is necessary to detect the markers for acquired drug resistance and find the new therapeutic targets. To perform the therapeutic monitoring, frequent tumor biopsy is needed, but it is not always possible due to small tumor size or its regression during the therapy or tumor inaccessibility in advanced cancer patients...
March 2017: Experimental Oncology
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