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prostate cancer, breast cancer

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https://www.readbyqxmd.com/read/29675653/medical-student-exposure-to-cancer-patients-whilst-on-clinical-placement-a-retrospective-analyses-of-clinical-log-books
#1
Darren L Starmer
In Australia, one in two men and one in three women will be diagnosed with cancer by the age of 85. Several studies have demonstrated a decline in the number of medical graduates having examined cancer patients during their training. The aim of this study was to evaluate the exposure of medical students to cancer patients during clinical placements. Eighty-eight logbooks (response rate = 24.75%) containing 9430 patients were analysed. A total of 829 patients (8.79%) had a diagnosis of cancer. Most cancer patients were seen on surgical placements, whilst general practice placements returned the lowest numbers...
April 19, 2018: Journal of Cancer Education: the Official Journal of the American Association for Cancer Education
https://www.readbyqxmd.com/read/29674390/consumption-of-sugars-sugary-foods-and-sugary-beverages-in-relation-to-adiposity-related-cancer-risk-in-the-framingham-offspring-cohort-1991-2013
#2
Nour Makarem, Elisa V Bandera, Yong Lin, Paul Jacques, Richard B Hayes, Niyati Parekh
BACKGROUND: Higher sugar consumption may increase cancer risk by promoting insulin-glucose dysregulation, oxidative stress, hormonal imbalances, and excess adiposity. This prospective study investigates the association between dietary sugars(fructose and sucrose) and sugary foods and beverages in relation to combined and site-specific (breast, prostate, colorectal) adiposity-associated cancers. METHODS: The analytic sample consisted of 3,184 adults, aged 26-84y, from the Framingham Offspring cohort...
April 19, 2018: Cancer Prevention Research
https://www.readbyqxmd.com/read/29673760/tumor-suppressive-functions-of-4-mu-on-breast-cancer-cells-of-different-er-status-regulation-of-hyaluronan-has2-cd44-and-specific-matrix-effectors
#3
Theodoros T Karalis, Paraskevi Heldin, Demitrios H Vynios, Thomas Neill, Simone Buraschi, Renato V Iozzo, Nikos K Karamanos, Spyros S Skandalis
The malignant phenotype of various cancers is linked to enhanced expression of hyaluronan, a pro-angiogenic glycosaminoglycan whose expression is suppressed by 4-methylumbelliferone (4-MU), a non-toxic oral agent used as a dietary supplement to improve health and combat prostate cancer. However, little is known about the effects of hyaluronan inhibition by 4-MU on breast cancer cells. In this study, we investigated the role of 4-MU in mammary carcinoma cells with distinct malignant phenotypes and estrogen receptor (ER) status, a major prognostic factor in the clinical management of breast cancers...
April 16, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29672549/tumor-development-in-japanese-patients-with-lynch-syndrome
#4
Chiaki Saita, Tatsuro Yamaguchi, Shin-Ichiro Horiguchi, Rin Yamada, Misato Takao, Takeru Iijima, Rika Wakaume, Tomoyuki Aruga, Taku Tabata, Koichi Koizumi
BACKGROUND: Lynch syndrome (LS) patients have a high risk of developing various tumors. This study aimed to clarify the characteristics of tumors developing in LS patients. METHODS: This is a retrospective review of 55 LS patients treated at Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital. RESULTS: The median age at the diagnosis of the first malignant tumor and first LS-related tumor was 44 (range, 19-65) and 44 (range, 24-66) years, respectively...
2018: PloS One
https://www.readbyqxmd.com/read/29671617/oxazole-and-thiazole-analogs-of-sulindac-for-cancer-prevention
#5
Bini Mathew, Judith V Hobrath, Michele C Connelly, R Kiplin Guy, Robert C Reynolds
AIM: Experimental and epidemiological studies and clinical trials suggest that nonsteroidal anti-inflammatory drugs possess antitumor potential. Sulindac, a widely used nonsteroidal anti-inflammatory drug, can prevent adenomatous colorectal polyps and colon cancer, especially in patients with familial adenomatous polyposis. Sulindac sulfide amide (SSA) is an amide-linked sulindac sulfide analog that showed in vivo antitumor activity in a human colon tumor xenograft model. Results/methodology: A new analog series with heterocyclic rings such as oxazole or thiazole at the C-2 position of sulindac was prepared and screened against prostate, colon and breast cancer cell lines to probe the effect of these novel substitutions on the activity of sulindac analogs...
April 19, 2018: Future Medicinal Chemistry
https://www.readbyqxmd.com/read/29669200/a-novel-as1411-aptamer-based-three-way-junction-pocket-dna-nanostructure-loaded-with-doxorubicin-for-targeting-cancer-cells-in-vitro-and-in-vivo
#6
Seyed Mohammad Taghdisi, Noor Mohammad Danesh, Mohammad Ramezani, Rezvan Yazdian-Robati, Khalil Abnous
Active targeting of nanostructures containing chemotherapeutic agents can improve cancer treatment. Here, a three-way junction pocket DNA nanostructure was developed for efficient doxorubicin (Dox) delivery into cancer cells. Three-way junction pocket DNA nanostructure is composed of three strands of AS1411 aptamer as both therapeutic aptamer and nucleolin targeting, the potential biomarker of prostate (PC-3 cells) and breast (4T1 cells) cancers. The properties of the Dox-loaded three-way junction pocket DNA nanostructure was characterized and verified to have several advantages, including high serum stability and pH-responsive property...
April 18, 2018: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29669169/genetic-testing-for-hereditary-prostate-cancer-current-status-and-limitations
#7
REVIEW
Jun Tu Zhen, Jamil Syed, Kevin Anh Nguyen, Michael S Leapman, Neeraj Agarwal, Karina Brierley, Xavier Llor, Erin Hofstatter, Brian Shuch
A significant proportion of prostate cancer diagnoses may be associated with a strong hereditary component. Men who have multiple single-gene polymorphisms and a family history of prostate cancer have a significantly greater risk of developing prostate cancer. Numerous single-gene alterations have been confirmed to increase the risk of prostate cancer. These include breast cancer genes 1 and 2 (BRCA1 and BRCA2, respectively), mutL homolog 1 (MLH1), mutS homologs 2 and 6 (MSH2 and MSH6, respectively), postmeiotic segregation increased 2 (PMS2), homeobox B13 (HOXB13), checkpoint kinase 2 (CHEK2), nibrin (NBN), BRCA1-interacting protein C-terminal helicase 1 (BRIP1), and ataxia telangiectasia mutated (ATM)...
April 18, 2018: Cancer
https://www.readbyqxmd.com/read/29668486/the-role-of-provider-characteristics-in-the-selection-of-surgery-or-radiation-for-localized-prostate-cancer-and-association-with-quality-of-care-indicators
#8
Raj Satkunasivam, Mary Lo, Mariana Stern, Inderbir S Gill, Steven Fleming, Xiao-Cheng Wu, Roger T Anderson, Trevor D Thompson, Ann S Hamilton
INTRODUCTION: We sought to identify the role of provider and facility characteristics in receipt of radical prostatectomy (RP) or external beam radiation therapy (EBRT) and adherence to quality of care measures in men with localized prostate cancer (PCa). MATERIALS AND METHODS: Subjects included 2861 and 1630 men treated with RP or EBRT, respectively, for localized PCa whose records were reabstracted as part of the Centers for Disease Control and Prevention Breast and Prostate Patterns of Care Study...
April 17, 2018: American Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29667174/impact-of-prior-cancer-history-on-the-overall-survival-of-patients-newly-diagnosed-with-cancer-a-pan-cancer-analysis-of-the-seer-database
#9
Huaqiang Zhou, Yan Huang, Zeting Qiu, Hongyun Zhao, Wenfeng Fang, Yunpeng Yang, Yuanyuan Zhao, Xue Hou, Yuxiang Ma, Shaodong Hong, Ting Zhou, Yaxiong Zhang, Li Zhang
The population of cancer survivors with prior cancer is rapidly growing. Whether a prior cancer diagnosis interferes with outcome is unknown. We conducted a pan-cancer analysis to determine the impact of prior cancer history for patients newly diagnosed with cancer. We identified 20 types of primary solid tumors between 2004 to 2008 in the Surveillance, Epidemiology, and End Results (SEER) database. Demographic and clinicopathologic variables were compared by chi-squared test and t-test as appropriate. The propensity score-adjusted Kaplan-Meier method and Cox proportional hazards models were used to evaluate the impact of prior cancer on overall survival (OS)...
April 18, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29665393/comparative-experimental-theoretical-studies-on-the-egfr-dimerization-under-the-effect-of-egf-egf-analogues-binding-highlighting-the-importance-of-egf-egfr-interactions-at-site-iii-interface
#10
Masomeh Mehrabi, Hamid Mahdiuni, Hassan Rasouli, Kamran Mansouri, Mohsen Shahlaie, Reza Khodarahmi
Epidermal growth factor receptors (EGFRs) and their cytoplasmic tyrosine kinases play significant roles in cell proliferation and signaling. All the members of the EGFR/ErbB family are primary goals for cancer therapy, particularly for tumors of breast, cervix, ovaries, kidney, esophagus, prostate and non-small-cell lung carcinoma and head and neck tumors. However, the therapeutic ability of accessible anti-ErbB agents is limited. Therefore, recognizing EGF analogues or small organic molecules with high affinity for the extracellular domain of the EGFR is a critical target on cancer research...
April 14, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29664916/is-periodontitis-a-risk-indicator-for-cancer-a-meta-analysis
#11
Stefano Corbella, Paolo Veronesi, Viviana Galimberti, Roberto Weinstein, Massimo Del Fabbro, Luca Francetti
BACKGROUND: The aim of the present systematic review was to evaluate the hypothesis of an association between periodontitis and the development of cancer. METHODS: Two reviewers independently screened electronic and manual sources for pertinent articles. Primary outcome measures were the occurrence of neoplasm diagnosis in exposed and non-exposed groups, reported to evaluate association between cancer and periodontitis. RESULTS: Of the 490 initially retrieved papers 10 were included in the qualitative synthesis and eight in the quantitative synthesis; the eight papers covered six studies...
2018: PloS One
https://www.readbyqxmd.com/read/29664606/radiometal-dependent-biological-profile-of-the-radiolabeled-grpr-antagonist-sb3-in-cancer-theranostics-metabolic-and-biodistribution-patterns-defined-by-neprilysin
#12
Emmanouil Lymperis, Aikaterini Kaloudi, Werner Sallegger, Ingrid L Bakker, Eric P Krenning, Marion DeJong, Theodosia Maina, Berthold Artur Nock
Recent advances in oncology involve the use of diagnostic/therapeutic radionuclide-carrier pairs that target cancer cells, offering exciting opportunities for personalized patient treatment. Theranostic gastrin-releasing peptide receptor (GRPR)-directed radiopeptides have been proposed for the management of GRPR-expressing prostate and breast cancers. We have recently introduced the PET tracer 68Ga-SB3 (SB3, DOTA-p-aminomethylaniline-diglycolic acid-DPhe-Gln-Trp-Ala-Val-Gly-His-Leu-NHEt), a receptor-radioantagonist that enables the visualization of GRPR-positive lesions in human...
April 17, 2018: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29664016/the-evolving-landscape-of-predictive-biomarkers-of-response-to-parp-inhibitors
#13
Anish Thomas, Junko Murai, Yves Pommier
Poly(ADP-ribose) polymerase inhibitors (PARPis) are DNA-damaging agents that trap PARP-DNA complexes and interfere with DNA replication. Three PARPis - olaparib, niraparib, and rucaparib - were recently approved by the FDA for the treatment of breast and ovarian cancers. These PARPis, along with 2 others (talazoparib and veliparib), are being evaluated for their potential to treat additional malignancies, including prostate cancers. While lack of PARP-1 confers high resistance to PARPis, it has not been established whether or not the levels of PARP-1 directly correlate with tumor response...
April 16, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29663879/anti-cancer-effects-of-metformin-recent-evidences-for-its-role-in-prevention-and-treatment-of-cancer
#14
Masoumeh Kheirandish, Hamidreza Mahboobi, Maryam Yazdanparast, Warda Kamal, Mohammad A Kamal
Metformin is widely used for the management of type 2 diabetes mellitus (T2DM). Recently growing evidence has shown its anti-cancer effects. The results are mainly obtained from observational studies and thus, little information is available concerning the mechanisms of action. Adenosine monophosphate (AMP)-activated protein kinase (AMPK) plays an important role in the mechanism of action of metformin. The anti-cancer mechanisms of metformin include direct and indirect effects. The direct effects of metformin include AMPK-independent and AMPK-dependent effects, whereas the decrease in glucose level, hyperinsulinemia, and Insulin-like growth factor 1 (IGF-1) level was considered its indirect effects...
April 16, 2018: Current Drug Metabolism
https://www.readbyqxmd.com/read/29662238/structural-underpinnings-of-oestrogen-receptor-mutations-in-endocrine-therapy-resistance
#15
REVIEW
John A Katzenellenbogen, Christopher G Mayne, Benita S Katzenellenbogen, Geoffrey L Greene, Sarat Chandarlapaty
Oestrogen receptor-α (ERα), a key driver of breast cancer, normally requires oestrogen for activation. Mutations that constitutively activate ERα without the need for hormone binding are frequently found in endocrine-therapy-resistant breast cancer metastases and are associated with poor patient outcomes. The location of these mutations in the ER ligand-binding domain and their impact on receptor conformation suggest that they subvert distinct mechanisms that normally maintain the low basal state of wild-type ERα in the absence of hormone...
April 16, 2018: Nature Reviews. Cancer
https://www.readbyqxmd.com/read/29662164/transcription-factors-operate-across-disease-loci-with-ebna2-implicated-in-autoimmunity
#16
John B Harley, Xiaoting Chen, Mario Pujato, Daniel Miller, Avery Maddox, Carmy Forney, Albert F Magnusen, Arthur Lynch, Kashish Chetal, Masashi Yukawa, Artem Barski, Nathan Salomonis, Kenneth M Kaufman, Leah C Kottyan, Matthew T Weirauch
Explaining the genetics of many diseases is challenging because most associations localize to incompletely characterized regulatory regions. Using new computational methods, we show that transcription factors (TFs) occupy multiple loci associated with individual complex genetic disorders. Application to 213 phenotypes and 1,544 TF binding datasets identified 2,264 relationships between hundreds of TFs and 94 phenotypes, including androgen receptor in prostate cancer and GATA3 in breast cancer. Strikingly, nearly half of systemic lupus erythematosus risk loci are occupied by the Epstein-Barr virus EBNA2 protein and many coclustering human TFs, showing gene-environment interaction...
April 16, 2018: Nature Genetics
https://www.readbyqxmd.com/read/29660689/quinonoid-compounds-via-reactions-of-lawsone-and-2-aminonaphthoquinone-with-%C3%AE-bromonitroalkenes-and-nitroallylic-acetates-structural-diversity-by-c-ring-modification-and-cytotoxic-evaluation-against-cancer-cells
#17
Thekke V Baiju, Renata G Almeida, Sudheesh T Sivanandan, Carlos A de Simone, Lucas M Brito, Bruno C Cavalcanti, Claudia Pessoa, Irishi N N Namboothiri, Eufrânio N da Silva Júnior
Morita-Baylis-Hillman acetates and α-bromonitroalkenes have been employed in cascade reactions with lawsone and 2-aminonaphthoquinone for the one-pot synthesis of heterocycle fused quinonoid compounds. The reactions reported here utilized the 1,3-binucleophilic potential of hydroxy- and aminonaphthoquinones and the 1,2/1,3-bielectrophilic potential of bromonitroalkenes and Morita-Baylis-Hillman acetates for the synthesis of pyrrole and furan fused naphthoquinones. The synthesized compounds were evaluated against HCT-116 (human colon carcinoma cells), PC3 (human prostate cancer cells), HL-60 (human promyelocytic leukemia cells), SF295 (human glioblastoma cells) and NCI-H460 (human lung cancer cells) and exhibited antitumor activity with IC50 values as low as < 2 μM...
April 5, 2018: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29659569/targeted-next-generation-sequencing-identifies-functionally-deleterious-germline-mutations-in-novel-genes-in-early-onset-familial-prostate-cancer
#18
Paula Paulo, Sofia Maia, Carla Pinto, Pedro Pinto, Augusta Monteiro, Ana Peixoto, Manuel R Teixeira
Considering that mutations in known prostate cancer (PrCa) predisposition genes, including those responsible for hereditary breast/ovarian cancer and Lynch syndromes, explain less than 5% of early-onset/familial PrCa, we have sequenced 94 genes associated with cancer predisposition using next generation sequencing (NGS) in a series of 121 PrCa patients. We found monoallelic truncating/functionally deleterious mutations in seven genes, including ATM and CHEK2, which have previously been associated with PrCa predisposition, and five new candidate PrCa associated genes involved in cancer predisposing recessive disorders, namely RAD51C, FANCD2, FANCI, CEP57 and RECQL4...
April 16, 2018: PLoS Genetics
https://www.readbyqxmd.com/read/29657610/detection-of-hepatocellular-carcinoma-by-tissue-resonance-interaction-method-trim
#19
Grzegorz Boryczka, Marek Hartleb, Małgorzata Janik
Introduction: Diagnosis of hepatocellular carcinoma (HCC) is considerably delayed, being frequently done in the non-curative stage of disease. The reason for delayed diagnosis is indolent course in early stages and/or unspecific symptoms indistinguishable from underlying cirrhosis. Hitherto methods used for screening of HCC have important limitations. TRIMprob is a non-invasive method, which showed utility in detection of cancers located in prostate, breast, or urinary bladder. Aim: To determine the diagnostic accuracy of TRIMprob in detecting HCC in cirrhotic liver...
2018: Przegla̜d Gastroenterologiczny
https://www.readbyqxmd.com/read/29657100/synthesis-of-1-2-4-triazole-linked-urea-thiourea-conjugates-as-cytotoxic-and-apoptosis-inducing-agents
#20
Ramya Tokala, Swarna Bale, Ingle Pavan Janrao, Aluri Vennela, Niggula Praveen Kumar, Kishna Ram Senwar, Chandraiah Godugu, Nagula Shankaraiah
A new series of 1,2,4-triazole-linked urea and thiourea conjugates have been synthesized and evaluated for their in vitro cytotoxicity against selected human cancer cell lines namely, breast (MCF-7, MDA-MB-231), lung (A549) prostate (DU145) and one mouse melanoma (B16-F10) cell line and compared with reference drug. The compound 5t showed significant cytotoxicity on MCF-7 breast cancer cell line with a IC50 value of 7.22 ± 0.47 µM among all the tested compounds. Notably, induction of apoptosis by compound 5t on MCF-7 cells was evaluated using different staining techniques such as acridine orange/ethidium bromide (AO/EB), annexin V-FITC/PI, and DAPI...
March 28, 2018: Bioorganic & Medicinal Chemistry Letters
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