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https://www.readbyqxmd.com/read/28335271/distribution-of-iron-oxide-core-titanium-dioxide-shell-nanoparticles-in-vx2-tumor-bearing-rabbits-introduced-by-two-different-delivery-modalities
#1
Tamer Refaat, Derek West, Samar El Achy, Vamsi Parimi, Jasmine May, Lun Xin, Kathleen R Harris, William Liu, Michael Beau Wanzer, Lydia Finney, Evan Maxey, Stefan Vogt, Reed A Omary, Daniele Procissi, Andrew C Larson, Tatjana Paunesku, Gayle E Woloschak
This work compares intravenous (IV) versus fluoroscopy-guided transarterial intra-catheter (IC) delivery of iron oxide core-titanium dioxide shell nanoparticles (NPs) in vivo in VX2 model of liver cancer in rabbits. NPs coated with glucose and decorated with a peptide sequence from cortactin were administered to animals with developed VX2 liver cancer. Two hours after NPs delivery tumors, normal liver, kidney, lung and spleen tissues were harvested and used for a series on histological and elemental analysis tests...
August 3, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28333854/presumed-retinal-pigment-epithelium-tumor-originating-from-unilateral-retinal-pigment-epithelium-dysgenesis
#2
Orly Gal-Or, Paul T Finger, Yale L Fisher, Lawrence A Yannuzzi, K Bailey Freund
PURPOSE: To describe a patient with a presumed retinal pigment epithelium (RPE) tumor originating from unilateral RPE dysgenesis. METHODS: Case report. RESULTS: A 30-year-old woman with an unremarkable medical and ocular history was referred for an evaluation of progressive central metamorphopsia in her left eye. Visual acuity was 20/20 in her right eye and 20/25 in her left eye. Funduscopic examination of the left eye revealed an elevated mass within an area of unilateral RPE dysgenesis showing hyperpigmentation and hypopigmentation with scalloped margins...
March 22, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28333553/cyclooxygenase-2-induction-by-amino-acid-deprivation-requires-p38-mitogen-activated-protein-kinase-in-human-glioma-cells
#3
Zhiwen Li, Chi-Ming Chang, Lanfang Wang, Ping Zhang, Hui-Kuo G Shu
Glioblastomas (GBMs) are malignant brain tumors that can outstrip nutrient supplies due to rapid growth. Cyclooxygenase-2 (COX-2) has been linked to GBMs and may contribute to their aggressive phenotypes. Amino acid starvation results in COX-2 mRNA and protein induction in multiple human glioma cell lines in a process requiring p38 mitogen-activated protein kinase (p38-MAPK) and the Sp1 transcription factor. Increased vascular endothelial growth factor expression results from starvation-dependent COX-2 induction...
March 23, 2017: Cancer Investigation
https://www.readbyqxmd.com/read/28332314/the-mitochondrial-hinge-protein-uqcrh-is-a-novel-prognostic-factor-for-hepatocellular-carcinoma
#4
Eun-Ran Park, Sang-Bum Kim, Jee-San Lee, Yang-Hyun Kim, Dong-Hyoung Lee, Eung-Ho Cho, Sun-Hoo Park, Chul Ju Han, Bu-Yeo Kim, Dong Wook Choi, Young Do Yoo, Ami Yu, Jae Won Lee, Ja June Jang, Young Nyun Park, Kyung-Suk Suh, Kee-Ho Lee
Alterations in mitochondrial respiration contribute to the development and progression of cancer via abnormal biogenesis, including generation of reactive oxygen species. Ubiquinol-cytochrome c reductase hinge protein (UQCRH) consists of the cytochrome bc1 complex serving respiration in mitochondria. In the present study, we analyzed UQCRH abnormalities in hepatocellular carcinoma (HCC) and its association with clinical outcomes of patients. UQCRH expression in HCC was determined via semiquantitative and quantitative real-time reverse transcriptase polymerase chain reaction of 96 surgically resected HCC tissues positive for hepatitis B virus surface antigen...
March 23, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28332062/diagnosis-and-treatment-of-metastases-to-the-thyroid-gland-a-meta-analysis
#5
REVIEW
Patrizia Straccia, Claudia Mosseri, Chiara Brunelli, Esther Diana Rossi, Celestino Pio Lombardi, Alfredo Pontecorvi, Guido Fadda
The thyroid is a rare site of clinically detectable tumor metastases; even though the gland is a highly vascularized structure, the frequency of metastases in the routine practice is less than 0.2% of all thyroid malignancies. The purpose of our meta-analysis is to evaluate the frequency of metastatic diffusion from other primary tumors to the thyroid gland and to suggest the best possible treatment through an evidence-based study. Relevant studies were identified by searching the following databases: PubMed, Scopus, and Web of Science...
March 22, 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28332049/molecular-and-pharmacological-mechanisms-of-drug-resistance-an-evolving-paradigm
#6
Benedetta Colmegna, Lavinia Morosi, Maurizio D'Incalci
The high heterogeneity and genomic instability of malignant tumors explains why even responsive tumors contain cell clones that are resistant for many possible mechanisms involving intracellular drug inactivation, low uptake or high efflux of anticancer drugs from cancer cells, qualitative or quantitative changes in the drug target. Many tumors, however, are resistant because of insufficient exposure to anticancer drugs, due to pharmacokinetic reasons and inefficient and heterogeneous tumor drug distribution, related to a deficient vascularization and high interstitial pressure...
March 23, 2017: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/28331872/induction-of-erythropoiesis-by-hypoxia-inducible-factor-prolyl-hydroxylase-inhibitors-without-promotion-of-tumor-initiation-progression-or-metastasis-in-a-vegf-sensitive-model-of-spontaneous-breast-cancer
#7
Todd W Seeley, Mark D Sternlicht, Stephen J Klaus, Thomas B Neff, David Y Liu
The effects of pharmacological hypoxia-inducible factor (HIF) stabilization were investigated in the MMTV-Neu(ndl)-YD5 (NeuYD) mouse model of breast cancer. This study first confirmed the sensitivity of this model to increased vascular endothelial growth factor (VEGF), using bigenic NeuYD;MMTV-VEGF-25 mice. Tumor initiation was dramatically accelerated in bigenic animals. Bigenic tumors were also more aggressive, with shortened doubling times and increased lung metastasis as compared to NeuYD controls. In separate studies, NeuYD mice were treated three times weekly from 7 weeks of age until study end with two different HIF prolyl hydroxylase inhibitors (HIF-PHIs), FG-4497 or roxadustat (FG-4592)...
2017: Hypoxia
https://www.readbyqxmd.com/read/28331768/external-jugular-vein-thrombosis-as-a-sign-of-metastatic-breast-cancer
#8
Metin Yalaza, Mehmet Tolga Kafadar, Esra Yurduseven Çıvgın, Arife Polat Düzgün
External jugular vein thrombosis is a rare vascular event which may lead fatal complication such as sepsis and pulmonary embolism. Its relation to the visceral solid tumor as an etiologic factor has been established well. Although external jugular vein thrombosis may be seen in malignancy, it is unusual to see as a sign of breast cancer. Most of the external jugular vein thrombosis occurs secondary to compression of the vein. Vascular thrombosis due to hypercoagulability is known as Trousseau syndrome. Herein, we present a case of metastatic breast cancer which presented with external jugular vein thrombosis; Trousseau syndrome...
January 2017: J Breast Health (2013)
https://www.readbyqxmd.com/read/28331761/association-of-icam-1-vcam-1-cyclin-d1-and-cathepsin-d-with-clinicopathological-parameters-in-breast-carcinoma-an-immunohistochemical-study
#9
Özgür Külahcı, H Hasan Esen, Elife Asut, Salim Güngör
OBJECTIVE: Breast carcinoma is the most common malignant tumor detected in women. The hypothesis that increased levels of adhesion molecules and Cathepsin D affect cancerous cells moving away the primary tumor and contributes to migration of the cancerous cell and may cause remote organ metastases is defended. The aim of the present study was to search the association of intracellular adhesion molecule-1 (ICAM-1), vascular adhesion molecule-1 (VCAM-1), Cyclin D1, cathepsin D immunohistochemically with clinicopathological parameters in the patients diagnosed with invasive ductal breast carcinoma...
January 2017: J Breast Health (2013)
https://www.readbyqxmd.com/read/28331739/a-rare-tumor-that-mimicked-metastasis-in-a-patient-with-breast-cancer-epithelioid-hemangioendothelioma
#10
Fatmagül Kuşku Çabuk, Fatma Aktepe, Ahmet Serkan İlgün, Dauren Sarsenov, Filiz Elbüken, Vahit Özmen
A woman aged 50 years was diagnosed as having an invasive ductal carcinoma in the right breast and ductal carcinoma in situ in the left breast and underwent bilateral mastectomy eight years ago. A mass was identified during follow-up in positron-emission tomography (PET) image in the left infraclavicular region, indicating metastasis. Histopathologic examination showed a mass of 1.9 × 1 × 0.7 cm in dimensions characterized by spindle or round nuclei cells that formed island or cords in hyaline and myxoid ground and intracytoplasmic vacuoles containing erythrocytes...
April 2016: J Breast Health (2013)
https://www.readbyqxmd.com/read/28331317/cyclic-rgd-peptide-modified-liposomal-drug-delivery-system-for-targeted-oral-apatinib-administration-enhanced-cellular-uptake-and-improved-therapeutic-effects
#11
Zhiwang Song, Yun Lin, Xia Zhang, Chan Feng, Yonglin Lu, Yong Gao, Chunyan Dong
Apatinib is an oral tyrosine kinase inhibitor, which selectively targets vascular endothelial growth factor receptor 2 and has the potential to treat many tumors therapeutically. Cyclic arginylglycylaspartic acid (cRGD)- and polyethylene glycol (PEG)-modified liposomes (cRGD-Lipo-PEG) were constructed to act as a targeted delivery system for the delivery of apatinib to the human colonic cancer cell line, HCT116. These cRGD-modified liposomes specifically recognized integrin αvβ3 and exhibited greater uptake efficiency with respect to delivering liposomes into HCT116 cells when compared to nontargeted liposomes (Lipo-PEG), as well as greater death of tumor cells and apoptosis...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28330942/primary-angiitis-of-the-central-nervous-system-magnetic-resonance-imaging-spectrum-of-parenchymal-meningeal-and-vascular-lesions-at-baseline
#12
Grégoire Boulouis, Hubert de Boysson, Mathieu Zuber, Loïc Guillevin, Eric Meary, Vincent Costalat, Christian Pagnoux, Olivier Naggara
BACKGROUND AND PURPOSE: Primary angiitis of the central nervous system remains challenging. To report an overview and pictorial review of brain magnetic resonance imaging findings in adult primary angiitis of the central nervous system and to determine the distribution of parenchymal, meningeal, and vascular lesions in a large multicentric cohort. METHODS: Adult patients from the French COVAC cohort (Cohort of Patients With Primary Vasculitis of the Central Nervous System), with biopsy or angiographically proven primary angiitis of the central nervous system and brain magnetic resonance imaging available at the time of diagnosis were included...
March 22, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28330784/vascular-endothelial-growth-factor-vegf-and-vegf-receptor-inhibitors-in-the-treatment-of-renal-cell-carcinomas
#13
REVIEW
Robert Roskoski
One Von Hippel-Lindau (VHL) tumor suppressor gene is lost in most renal cell carcinomas while the nondeleted allele exhibits hypermethylation-induced inactivation or inactivating somatic mutations. As a result of these genetic modifications, there is an increased production of VEGF-A and pro-angiogenic growth factors in this disorder. The important role of angiogenesis in the pathogenesis of renal cell carcinomas and other tumors has focused the attention of investigators on the biology of VEGFs and VEGFR1-3 and to the development of inhibitors of the intricate and multifaceted angiogenic pathways...
March 18, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28330603/dhx32-promotes-angiogenesis-in-colorectal-cancer-through-augmenting-%C3%AE-catenin-signaling-to-induce-expression-of-vegfa
#14
Huayue Lin, Zanxi Fang, Yuanhui Su, Peihua Li, Jingkun Wang, Hongfeng Liao, Qing Hu, Chunlei Ye, Yizhen Fang, Qing Luo, Zhiyuan Lin, Chao Pan, Fen Wang, Zhong-Ying Zhang
We previously reported that overexpression of DHX32 contributes to the growth and metastasis of colorectal cancer (CRC). However, the underlying mechanism is not largely characterized. Herein, we reported that DHX32 in CRC cells upregulated expression of vascular endothelial growth factor A (VEGFA) at the transcription level through interacting with and stabilizing β-catenin. This promoted the recruitment of host endothelial cells to the tumor, and therefore, formation of microvessel in the tumor. Xenograft model revealed that depletion of DHX32 in CRC cells significantly reduced the microvessel density in the grafts and suppressed the growth of grafts...
March 9, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28329979/imaging-of-neck-masses-in-the-neonate
#15
Amina Ben Salem, Abir Khalfalli, Saida Jerbi, Wissem Harzallah, Fatma-Zohra Chioukh, Chiraz Hafsa, Ines Mezhoud
INTRODUCTION: Neck masses occurring in the neonatal period and early infancy consist of vascular tumors, vascular malformations, benign and malignant soft tissue tumors and other developmental lesions. Although some lesions can be diagnosed on clinical grounds, others can only be diagnosed by imaging. Beyond diagnosis, imaging plays a significant role in evaluating the location and extent of a lesion for possible intervention. METHODS AND MATERIALS: Clinical series descriptive study with a retrospective examination of neonates with masses of the neck...
March 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28329735/anti-inflammatory-mechanism-of-ulinastatin-inhibiting-the-hyperpermeability-of-vascular-endothelial-cells-induced-by-tnf-%C3%AE-via-the-rhoa-rock-signal-pathway
#16
Fu Wei, Siyi Liu, Li Luo, Nina Gu, Yan Zeng, Xiaoying Chen, Shan Xu, Dan Zhang
OBJECTIVE: Ulinastatin reduces the high permeability of vascular endothelial cells induced by tumor necrosis factor alpha (TNF-α). This study investigated the molecular mechanism behind this effect, with the aim of understanding the action of ulinastatin in sepsis therapy and exploring novel therapeutic strategies for sepsis patients. METHODS: A TNF-α treated human umbilical vein endothelial cell line (EA.hy926) was employed as an inflammation model. Horseradish peroxidase permeability assays and an epithelial voltmeter method were used to measure the permeability of EA...
March 19, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28329597/melanoma-occurrence-under-long-term-etanercept-treatment-for-psoriasis-a-case-report
#17
Laura Atzori, Luca Pilloni, Severino Murgia, Cristina Mugheddu, Monica Pau, Franco Rongioletti
Melanoma occurrence during treatment with anti-tumor necrosis factor is considered an incidental event, although very recent studies suggest a risk. Etanercept is a fusion protein that binds the tumor necrosis factor receptor and is included among TNF inhibitors, approved for the treatment of several autoimmune diseases, such as psoriasis.We described a 79-year-old man with psoriasis, being treated with etanercept, who presented with a new brown to black macule on his right shoulder; this was immediately surgically excised...
October 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329592/giant-subungual-glomus-tumor-clinical-dermoscopy-imagiologic-and-surgery-details
#18
Ana Filipa Duarte, Osvaldo Correia, Hugo Barreiros, Eckart Haneke
Glomus tumor is a rare benign vascular hamartoma derived from the modified smooth muscle cells of the glomus body. Paroxysmal pain is the leading symptom. A 78-year-old woman presented at our clinic with a 50-year history of a slow growing painful purple blue tender nodule under the right fourth finger nail. Dermoscopy and magnetic ressonance confirmed the presence of a large subungual tumor and total surgical excision was performed after partial nail plate avulsion. Histologic examination confirmed a glomus tumor...
October 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329529/concurrent-pyogenic-granuloma-and-bullous-impetigo-of-a-pregnant-woman-s-finger
#19
Rosie Qin, Philip R Cohen
BACKGROUND: Bullous impetigo is a superficial skininfection caused by Staphylococcus aureus (S.aureus). Pyogenic granuloma is a common benigntumor frequently associated with prior trauma.Bullous impetigo and pyogenic granuloma may occurin pregnant women. PURPOSE: The features of a pregnant womanwith pyogenic granuloma and bullous impetigoconcurrently present in a lesion on her finger aredescribed. METHODS: PubMed was used to search the followingterms: bullous impetigo, pregnancy, and pyogenicgranuloma...
March 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/28328845/the-prognostic-role-of-boris-and-socs3-in-human-hepatocellular-carcinoma
#20
Rongce Zhao, Kefei Chen, Jing Zhou, Jingyang He, Jun Liu, Peng Guan, Bo Li, Yang Qin
Brother of regulator of imprinted sites (BORIS) is a DNA-binding protein that is normally expressed in the testes. However, aberrant expression of BORIS is observed in various carcinomas, indicating a malignant role for this protein. Furthermore, abolishment or reduction of suppressor of cytokine signaling 3 (SOCS3) expression directed by promoter methylation is considered significant in hepatocellular carcinoma (HCC) carcinogenesis. This study aims to investigate BORIS and SOCS3 expression in HCC specimens and assess the prognostic significance of these proteins...
March 2017: Medicine (Baltimore)
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