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https://www.readbyqxmd.com/read/29150398/glycyrrhiza-glabra-extract-and-quercetin-reverses-cisplatin-resistance-in-triple-negative-mda-mb-468-breast-cancer-cells-via-inhibition-of-cytochrome-p450-1b1-enzyme
#1
Rajni Sharma, Linda Gatchie, Ibidapo S Williams, Shreyans K Jain, Ram A Vishwakarma, Bhabatosh Chaudhuri, Sandip B Bharate
The development of multi-drug resistance to existing anticancer drugs is one of the major challenges in cancer treatment. The over-expression of cytochrome P450 1B1 enzyme has been reported to cause resistance to cisplatin. With an objective to discover cisplatin-resistance reversal agents, herein, we report the evaluation of Glycyrrhiza glabra (licorice) extracts and its twelve chemical constituents for inhibition of CYP1B1 (and CYP1A1) enzyme in Sacchrosomes and live human cells. The hydroalcoholic extract showed potent inhibition of CYP1B1 in both Sacchrosomes as well as in live cells with IC50 values of 21 and 16 µg/mL, respectively...
November 7, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/29149504/mybl1-rearrangements-and-myb-amplification-in-breast-adenoid-cystic-carcinomas-lacking-the-myb-nfib-fusion-gene
#2
Jisun Kim, Felipe C Geyer, Luciano G Martelotto, Charlotte K Y Ng, Raymond S Lim, Pier Selenica, Anqi Li, Fresia Pareja, Nicola Fusco, Marcia Edelweiss, Rahul Kumar, Rodrigo Gularte-Merida, Andre N Forbes, Ekta Khurana, Odette Mariani, Sunil Badve, Anne Vincent-Salomon, Larry Norton, Jorge S Reis-Filho, Britta Weigelt
Breast adenoid cystic carcinoma (AdCC), a rare type of triple-negative breast cancer (TNBC), has been shown to be driven by MYB pathway activation, most often underpinned by the MYB-NFIB fusion gene. Alternative genetic mechanisms, such as MYBL1 rearrangements, have been reported in MYB-NFIB-negative salivary gland AdCCs. Here we report on the molecular characterization by massively parallel sequencing of four breast AdCCs lacking the MYB-NFIB fusion gene. In two cases, we identified MYBL1 rearrangements (MYBL1-ACTN1 and MYBL1-NFIB), which were associated with MYBL1 overexpression...
November 17, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/29149379/efficacy-of-systemic-and-intratympanic-corticosteroid-combination-therapy-versus-intratympanic-or-systemic-therapy-in-patients-with-idiopathic-sudden-sensorineural-hearing-loss-a-randomized-controlled-trial
#3
Mohammadtaghi Khorsandi Ashtiani, Farzad Firouzi, Shahin Bastaninejad, Sasan Dabiri, Sevil Nasirmohtaram, Niloufar Saeedi, Hossein Ghazavi, Leyla Sahebi
OBJECTIVE: The present study was conducted to compare the rates of recovery from idiopathic sudden deafness after the treatment with oral and intratympanic corticosteroids in both mono and combination therapies. STUDY DESIGN: Triple-blind randomized clinical trial. SETTINGS: Tertiary referral hospital. SUBJECTS AND METHODS: A total of 112 patients who were admitted to the ENT emergency department randomly divided into three groups: an oral corticosteroid plus intratympanic placebo (systemic corticosteroid monotherapy group); an intratympanic corticosteroid plus oral placebo group (IT monotherapy group); and a combination therapy group (IT plus systemic combination group)...
November 17, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/29149068/a-new-uplc-ms-ms-method-for-the-characterization-and-discrimination-of-polysaccharides-from-genus-ephedra-based-on-enzymatic-digestions
#4
Yong-Gang Xia, Tian-Long Wang, Li-Ming Sun, Jun Liang, Bing-You Yang, Hai-Xue Kuang
Ephedra sinica polysaccharides have been reported to possess important activities, so quality evaluation of polysaccharides from the genus Ephedra is urgent. In this study, enzymatic digestions were performed to establish multiple saccharide fingerprints by ultra-performance liquid chromatography with electrospray ionization triple quadrupole linear ion trap mass spectrometry (UPLC-ESI-TQ-MS/MS) based on a multiple-reaction monitoring in negative mode. Under optimum UPLC-ESI⁻-TQ-MS/MS conditions, excellent separation and quantification of 21 constituents were achieved within 20 min on a solid core column with a 1...
November 17, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29148091/intrinsic-subtypes-of-breast-cancers-initially-assessed-as-probably-benign-or-of-low-suspicion-on-ultrasonography-differ-according-to-tumor-size
#5
Jieun Koh, Min Jung Kim, Hee Jung Moon, Jung Hyun Yoon, Vivian Youngjean Park, Eun-Kyung Kim
OBJECTIVES: To investigate whether the intrinsic subtypes of breast cancers initially assessed as American College of Radiology Breast Imaging and Reporting System (BI-RADS) category 3 or 4a differ according to tumor size. METHODS: A total of 444 breast cancers in 439 patients initially assessed as BI-RADS 3 or 4a through ultrasound-guided core needle biopsy were included. Tumors were classified by the size criterion of 10 mm or smaller or larger than 10 mm and categorized as the luminal type (estrogen receptor [ER] positive and/or progesterone receptor [PR] positive and human epidermal growth factor receptor 2 [HER2] negative), HER2 type (HER2 positive regardless of ER or PR status), or triple-negative type (ER negative, PR negative, and HER2 negative)...
November 17, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29147445/role-of-taxanes-in-triple-negative-breast-cancer-a-study-from-tertiary-cancer-center-in-south-india
#6
K C Lakshmaiah, Abhishek Anand, K Govind Babu, Lokanatha Dasappa, Linu Abraham Jacob, Suresh Babu M C, K N Lokesh, A H Rudresha, L K Rajeev, Smitha C Saldanha, G V Giri, Deepak Koppaka
Background: Breast cancer is the most common female cancer seen globally. Triple-negative breast cancer (TNBC) is a special subtype without any obvious target and optimum treatment remains challenging. The aim was to study the clinical, pathological profile and treatment outcome of TNBC patients. Methods: This was a retrospective observational study of TNBC patients diagnosed from January 2010 to June 2012 at a tertiary cancer center in South India. Patient's clinical and pathological characteristics were studied...
August 2017: World Journal of Oncology
https://www.readbyqxmd.com/read/29147072/paradoxical-association-of-postoperative-plasma-sphingosine-1-phosphate-with-breast-cancer-aggressiveness-and-chemotherapy
#7
Rajesh Ramanathan, Ali Raza, Jamie Sturgill, Debra Lyon, Jessica Young, Nitai C Hait, Kazuaki Takabe
Sphingosine-1-phosphate (S1P) is a bioactive lipid mediator that has been shown to serve an important regulatory function in breast cancer progression. This study analyzes plasma S1P levels in breast cancer patients undergoing adjuvant therapy as compared to healthy control volunteers. 452 plasma S1P samples among 158 breast cancer patients, along with 20 healthy control volunteers, were analyzed. Mean S1P levels did not significantly differ between cancer patients and controls. Smoking was associated with higher S1P levels in cancer patients...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/29146734/humanized-mice-in-studying-efficacy-and-mechanisms-of-pd-1-targeted-cancer-immunotherapy
#8
Minan Wang, Li-Chin Yao, Mingshan Cheng, Danying Cai, Jan Martinek, Chong-Xian Pan, Wei Shi, Ai-Hong Ma, Ralph W De Vere White, Susan Airhart, Edison T Liu, Jacques Banchereau, Michael A Brehm, Dale L Greiner, Leonard D Shultz, Karolina Palucka, James G Keck
Establishment of an in vivo small animal model of human tumor and human immune system interaction would enable preclinical investigations into the mechanisms underlying cancer immunotherapy. To this end, non-obese diabetic (NOD).Cg-Prkdc(scid)IL2rg(tm1Wjl) /Sz (null; NSG) mice were transplanted with human (h)CD34(+) hematopoietic progenitor and stem cells, which leads to the development of human hematopoietic and immune systems [humanized NSG (HuNSG)]. HuNSG mice received human leukocyte antigen partially matched tumor implants from patient-derived xenografts [PDX; nonsmall cell lung cancer (NSCLC), sarcoma, bladder cancer, and triple-negative breast cancer (TNBC)] or from a TNBC cell line-derived xenograft (CDX)...
November 16, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29146102/outcomes-by-molecular-subtype-after-accelerated-partial-breast-irradiation-using-single-entry-catheters
#9
Aman Saini, Robert Kuske, Coral Quiet, Cheri Pantoja, Daniel Reed, Victor Zannis
PURPOSE: Tumor biology is being recognized as an important indicator of prognosis and risk of locoregional recurrence. Here, we determine actuarial recurrence rates by approximated molecular subtype for women treated with single-entry catheter accelerated partial breast irradiation (sAPBI). METHODS AND MATERIALS: One thousand four hundred eighty-six women with invasive cancer having known ER, PR, and Her2 status and at least 1-year of followup were treated using MammoSite, Contura, or SAVI sAPBI from 2002 to 2014 at our institution...
November 13, 2017: Brachytherapy
https://www.readbyqxmd.com/read/29145974/immunotherapy-for-triple-negative-breast-cancer-existing-challenges-and-exciting-prospects
#10
Hongyan Jia, Cristina I Truica, Bin Wang, Yanhong Wang, Xingcong Ren, Harold A Harvey, Jianxun Song, Jin-Ming Yang
Patients with breast tumors that do not express the estrogen receptor, the progesterone receptor, nor Her-2/neu are hence termed "triple negatives", and generally have a poor prognosis, with high rates of systemic recurrence and refractoriness to conventional therapy regardless of the choice of adjuvant treatment. Thus, more effective therapeutic options are sorely needed for triple-negative breast cancer (TNBC), which occurs in approximately 20% of diagnosed breast cancers. In recent years, exploiting intrinsic mechanisms of the host immune system to eradicate cancer cells has achieved impressive success, and the advances in immunotherapy have yielded potential new therapeutic strategies for the treatment of this devastating subtype of breast cancer...
May 2017: Drug Resistance Updates: Reviews and Commentaries in Antimicrobial and Anticancer Chemotherapy
https://www.readbyqxmd.com/read/29145561/clinical-significance-of-cd73-in-triple-negative-breast-cancer-multiplex-analysis-of-a-phase-iii-clinical-trial
#11
L Buisseret, S Pommey, B Allard, S Garaud, M Bergeron, I Cousineau, L Ameye, Y Bareche, M Paesmans, J P A Crown, A Di Leo, S Loi, M Piccart-Gebhart, K Willard-Gallo, C Sotiriou, J Stagg
Background: CD73 is an ecto-enzyme that promotes tumor immune escape through the production of immunosuppressive extracellular adenosine in the tumor microenvironment. Several CD73 inhibitors and adenosine receptor antagonists are being evaluated in phase I clinical trials. Patients and methods: Full-face sections from formalin-fixed paraffin-embedded primary breast tumors from 122 samples of triple-negative breast cancer from the BIG 02-98 adjuvant phase III clinical trial were included in our analysis...
November 14, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29145336/expression-of-hormone-receptors-in-low-grade-adenosquamous-carcinoma-of-the-breast-a-case-report
#12
Hai-Bo Wu, An-Li Zhang, Wei Wang, Heng Li
RATIONALE: Low-grade adenosquamous carcinoma (LGASC) is a rare subtype of metaplastic breast carcinoma which is generally recognized as a characteristic subgroup of triple-negative breast cancers previously. However, in this study, we reported for the first time a case of LGASC with hormone receptors expression. PATIENT CONCERNS: Pathological analysis of breast tumor specimen obtained by a 42-year-old female patient was performed. Morphologically, it composed of glandular structures with scattered squamous differentiation accompanied by haphazard arrangement of spindle cell stroma...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29144746/oxyprenylated-phenylpropanoids-bind-to-mt1-melatonin-receptors-and-inhibit-breast-cancer-cell-proliferation-and-migration
#13
Mahmud Hasan, Salvatore Genovese, Serena Fiorito, Francesco Epifano, Paula A Witt-Enderby
Oxyprenylated compounds (i.e., ferulic acid and coumarin derivatives) demonstrate neuroprotection and anticancer properties as reported in previous studies. We have tested the affinity of oxyprenylated ferulic acid (1-4) and umbelliferone derivatives (5-11) to melatonin receptors as well as their antiproliferation and antimigratory properties against breast cancer (BC) cell lines. All the compounds except for ferulic acid, boropinic acid, and umbelliferone had binding affinities to melatonin receptors in the nM to μM range, and both auraptene and umbellinprenin reduced BC cell proliferation and migration in phenotypically diverse BC including triple negative...
November 16, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/29144137/design-of-novel-3-pyrimidinylazaindole-based-cdk2-9-inhibitors-with-potent-in-vitro-and-in-vivo-antitumor-efficacy-in-a-triple-negative-breast-cancer-model
#14
Umed Singh, Gousia Chashoo, Sameer U Khan, Priya Mahajan, Amit Nargotra, Girish Mahajan, Amarinder Singh, Anjna Sharma, Mubashir Javeed Mintoo, Santosh Kumar Guru, Hariprasad Aruri, Thanusha Thatikonda, Promod Sahu, Pankaj Chibber, Vikas Kumar, Sameer A Mir, Sonali S Bharate, Sreedhar Madishetti, Utpal Nandi, Gurdarshan Singh, Dilip Manikrao Mondhe, Shashi Bhushan, Fayaz Malik, Serge Mignani, Ram A Vishwakarma, Parvinder Pal Singh
In the present study, novel series of 3-pyrimidinylazaindoles were designed and synthesized using bioinformatics strategy as cyclin-dependent kinases CDK2 and CDK9 inhibitors, which play critical roles in cell-cycle control and regulation of cell transcription. The present approach has given new dimensions to existing SAR and opens the new opportunity for lead optimization from comparatively inexpensive starting materials. The study led to the identification of alternative lead candidate 4ab with nanomolar potency against CDK2 and CDK9 and potent anti-proliferative activities against a panel of tested tumor cell lines along better safety ratio of ~30 in comparison to reported leads...
November 16, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29142600/co-activation-of-hedgehog-and-wnt-signaling-pathways-is-associated-with-poor-outcomes-in-triple-negative-breast-cancer
#15
Kimberly M Arnold, Ryan T Pohlig, Jennifer Sims-Mourtada
Hedgehog (HH) and Wnt pathway activation have been implicated in poor prognosis of breast cancer. Crosstalk between these two pathways has been demonstrated to be important in breast cancer progression, however the association between these two pathways and breast cancer survival rate is unknown. The present study comprised a cohort of 36 patients with triple negative breast cancer (TNBC) to investigate co-activation of HH and canonical Wnt pathway in association to patient outcome. All patients had varying degrees of cytoplasmic sonic HH and glioma-associated oncogene homolog (Gli)-1 staining, which positively correlated with tumor stage...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29142588/characterization-of-hormonal-receptors-and-human-epidermal-growth-factor-receptor-2-in-tissues-of-women-with-breast-cancer-at-muhimbili-national-hospital-dar-es-salaam-tanzania
#16
Amos Rodger Mwakigonja, Nyanda Elias Lushina, Ally Mwanga
Background: Breast cancer is a leading cause of morbidity and deaths among women worldwide. In Tanzania there is no published data on human epidermal growth receptor-2 (HER2/neu) expression in breast carcinoma. Hormonal receptors and HER2/neu status reportedly influence post-mastectomy adjuvant therapy and predict treatment outcome and prognosis. Here we evaluate hormonal receptors and HER-2 status in biopsies of women with breast cancer at Muhimbili National Hospital (MNH). Methods: A cross-sectional study of female breast post-modified radical mastectomy (MRM)/incisional biopsies confirmed to be carcinoma at the Histopathology Unit (January-December 2013)...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29142367/case-of-carcinoma-breast-with-unusually-large-tumor-thrombus-in-superior-vena-cava-detected-on-18-f-fluorodeoxyglucose-positron-emission-tomography-computed-tomography-scan
#17
Arun Sasikumar, Anto Baby, Mathews Jose, Retcy Mary Paul
A 60-year-old female with triple negative breast cancer, postsurgery, neoadjuvant chemotherapy and radiotherapy, on follow-up had facial puffiness and giddiness. (18)F-fluorodeoxyglucose positron emission tomography/computed tomography ((18)F-FDG PET/CT) done for suspected recurrence evaluation revealed a large tumor thrombus (TT) in superior vena cava (SVC) with radiological evidence of SVC obstruction. (18)F-FDG PET/CT also showed evidence of FDG avid brain metastases, lymph nodal metastases, and metastatic soft tissue deposits...
October 2017: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/29142206/egfr-conjunct-fscn1-as-a-novel-therapeutic-strategy-in-triple-negative-breast-cancer
#18
Chao-Qun Wang, Yang Li, Bi-Fei Huang, Yong-Ming Zhao, Hui Yuan, Dongfang Guo, Chen-Ming Su, Gui-Nv Hu, Qian Wang, Tengyun Long, Yan Wang, Chih-Hsin Tang, Xiaoni Li
Emerging evidence indicates that Fascin-1 (FSCN1) may possess a causal role in the development of several types of cancers and serves as a novel biomarker of aggressiveness in certain carcinomas. However, the regulatory mechanism of FSCN1 in triple-negative breast cancer (TNBC) cell invasion and migration is still largely unknown. In our study, we observed that the FSCN1 expression rates were significantly higher in invasive ductal carcinoma, compared with both usual ductal hyperplasia and ductal carcinoma in situ...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29141888/lung-cancer-associated-pulmonary-hypertension-role-of-microenvironmental-inflammation-based-on-tumor-cell-immune-cell-cross-talk
#19
Soni Savai Pullamsetti, Baktybek Kojonazarov, Samantha Storn, Henning Gall, Ylia Salazar, Janine Wolf, Andreas Weigert, Nefertiti El-Nikhely, Hossein Ardeschir Ghofrani, Gabriele A Krombach, Ludger Fink, Stefan Gattenlöhner, Ulf R Rapp, Ralph Theo Schermuly, Friedrich Grimminger, Werner Seeger, Rajkumar Savai
Dyspnea is a frequent, devastating, and poorly understood symptom of advanced lung cancer. In our cohort, among 519 patients who underwent a computed tomography scan for the diagnosis of lung cancer, 250 had a mean pulmonary artery diameter of >28 mm, indicating pulmonary hypertension (PH). In human lung cancer tissue, we consistently observed increased vascular remodeling and perivascular inflammatory cell accumulation (macrophages/lymphocytes). Vascular remodeling, PH, and perivascular inflammatory cell accumulation were mimicked in three mouse models of lung cancer (LLC1, KRas(LA2) , and cRaf-BxB)...
November 15, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/29140689/tissue-inhibitor-of-metalloprotease-2-timp-2-bioprocess-development-physicochemical-biochemical-and-biological-characterization-of-highly-expressed-recombinant-protein
#20
Ananda Chowdhury, Robert G Brinson, Beiyang Wei, William G Stetler-Stevenson
Tissue Inhibitor of Metalloprotease -2 (TIMP-2) is a secreted 21 kDa multifunctional protein first described as an endogenous inhibitor of matrix metalloproteinases (MMPs) that prevents breakdown of the extracellular matrix often observed in chronic diseases. TIMP-2 diminishes growth factor-mediated cell proliferation in vitro, as well as neoangiogenesis and tumor growth in vivo independent of its MMP-inhibitory activity, . These physiological properties make TIMP-2 an excellent candidate for further pre-clinical development as a biologic therapy of cancer...
November 15, 2017: Biochemistry
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