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https://www.readbyqxmd.com/read/27262716/3-chloro-1-2-propanediol-biodegradation-by-ca-alginate-immobilized-pseudomonas-putida-dsm-437-cells-applying-different-processes-mass-transfer-effects
#1
Aikaterini Konti, Diomi Mamma, Dimitios G Hatzinikolaou, Dimitris Kekos
3-Chloro-1,2-propanediol (3-CPD) biodegradation by Ca-alginate immobilized Pseudomonas putida cells was performed in batch system, continuous stirred tank reactor (CSTR), and packed-bed reactor (PBR). Batch system exhibited higher biodegradation rates and 3-CPD uptakes compared to CSTR and PBR. The two continuous systems (CSTR and PBR) when compared at 200 mg/L 3-CPD in the inlet exhibited the same removal of 3-CPD at steady state. External mass-transfer limitations are found negligible at all systems examined, since the observable modulus for external mass transfer Ω ≪ 1 and the Biot number Bi > 1...
October 2016: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/27116710/combretastatin-a-4-derived-5-1-methyl-4-phenyl-imidazol-5-yl-indoles-with-superior-cytotoxic-and-anti-vascular-effects-on-chemoresistant-cancer-cells-and-tumors
#2
Katharina Mahal, Bernhard Biersack, Sebastian Schruefer, Marcus Resch, Ralf Ficner, Rainer Schobert, Thomas Mueller
5-(1-Methyl-4-phenyl-imidazol-5-yl)indoles 5 were prepared and tested as analogs of the natural vascular-disrupting agent combretastatin A-4 (CA-4). The 3-bromo-4,5-dimethoxyphenyl derivative 5c was far more active than CA-4 with low nanomolar IC50 concentrations against multidrug-resistant KB-V1/Vbl cervix and MCF-7/Topo mamma carcinoma cells, and also against CA-4-resistant HT-29 colon carcinoma cells. While not interfering markedly with the polymerization of tubulin in vitro, indole 5c completely disrupted the microtubule cytoskeleton of cancer cells at low concentrations...
August 8, 2016: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/26971627/oxidative-stress-and-glyoxalase-i-activity-mediate-dicarbonyl-toxicity-in-mcf-7-mamma-carcinoma-cells-and-a-tamoxifen-resistant-derivative
#3
Norbert Nass, Saadettin Sel, Atanas Ignatov, Albert Roessner, Thomas Kalinski
BACKGROUND: Acquired tamoxifen resistance is a significant problem in estrogen receptor positive breast cancer. In a cellular model, tamoxifen resistance was associated with increased sensitivity towards toxic dicarbonyls and reduced free sulfhydryl group content. We here analyzed the role of oxidative stress and glyoxalase I activity on dicarbonyl resistance and the significance of glyoxalase I expression for survival. METHODS: Reactive oxygen species were determined by 2,7-dihydrochlorofluorescein diacetate...
June 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/26823437/a-comprehensive-multistate-model-analyzing-associations-of-various-risk-factors-with-the-course-of-breast-cancer-in-a-population-based-cohort-of-breast-cancer-cases
#4
Christine Eulenburg, Jennifer Schroeder, Nadia Obi, Judith Heinz, Petra Seibold, Anja Rudolph, Jenny Chang-Claude, Dieter Flesch-Janys
We employed a semi-Markov multistate model for the simultaneous analysis of various endpoints describing the course of breast cancer. Results were compared with those from standard analyses using a Cox proportional hazards model. We included 3,012 patients with invasive breast cancer newly diagnosed between 2001 and 2005 who were recruited in Germany for a population-based study, the Mamma Carcinoma Risk Factor Investigation (MARIE Study), and prospectively followed up until the end of 2009. Locoregional recurrence and distant metastasis were included as intermediate states, and deaths from breast cancer, secondary cancer, and other causes were included as competing absorbing states...
February 15, 2016: American Journal of Epidemiology
https://www.readbyqxmd.com/read/26561204/upregulation-of-mir-181c-contributes-to-chemoresistance-in-pancreatic-cancer-by-inactivating-the-hippo-signaling-pathway
#5
Meiyuan Chen, Min Wang, Simiao Xu, Xingjun Guo, Jianxin Jiang
The Hippo signaling pathway plays a crucial role in regulating tissue homeostasis, organ size, tumorigenesis and cancer chemoresistance when deregulated. Physiologically, the Hippo core kinase cassette that consists of mamma-lian STE20-like protein kinase 1/2 (MST1/2), and large tumour suppressor 1/2 (LATS1/2), together with the adaptor proteins Salvador homologue 1 (SAV1) and MOB kinase activator 1 (MOB1), tightly restricts the activities of homologous oncoproteins Yes-associated protein (YAP) and transcriptional co-activator with PDZ-binding motif (TAZ) to low levels...
December 29, 2015: Oncotarget
https://www.readbyqxmd.com/read/26336955/fracture-of-the-lesser-trochanter-as-a-sign-of-undiagnosed-tumor-disease-in-adults
#6
Christian Herren, Christian D Weber, Miguel Pishnamaz, Thomas Dienstknecht, Philipp Kobbe, Frank Hildebrand, Hans-Christoph Pape
Isolated avulsion fractures of the pelvic ring are rare and occur predominantly in adolescent athletes. Isolated fractures of the lesser trochanter are reported to be pathognomic for tumor diseases in adults. We present a case of a female patient with an isolated avulsion of the lesser trochanter after treatment by her chiropractor. After staging examination, we determine the diagnosis of a left-sided carcinoma of the mamma. Additional imaging shows multiple metastases in liver, spine and pelvis. Palliative therapy has started over the course of time...
2015: European Journal of Medical Research
https://www.readbyqxmd.com/read/26169362/locally-ablative-treatment-of-breast-cancer-liver-metastases-identification-of-factors-influencing-survival-the-mammary-cancer-microtherapy-and-interventional-approaches-mamma-mia-study
#7
Max Seidensticker, Benjamin Garlipp, Sophia Scholz, Konrad Mohnike, Felix Popp, Ingo Steffen, Ricarda Seidensticker, Patrick Stübs, Maciej Pech, Maciej PowerskI, Peter Hass, Serban-Dan Costa, Holger Amthauer, Christiane Bruns, Jens Ricke
BACKGROUND: Liver metastases from breast cancer (LMBC) are typically considered to indicate systemic disease spread and patients are most often offered systemic palliative treatment only. However, retrospective studies suggest that some patients may have improved survival with local treatment of their liver metastases compared to systemic therapy alone. In the absence of randomized trials, it is important to identify patient characteristics indicating that benefit from local treatment can be expected...
2015: BMC Cancer
https://www.readbyqxmd.com/read/26166836/primary-therapy-of-patients-with-early-breast-cancer-evidence-controversies-consensus-opinions-of-german-specialists-to-the-14th-st-gallen-international-breast-cancer-conference-2015-vienna-2015
#8
M Untch, N Harbeck, J Huober, G von Minckwitz, B Gerber, H-H Kreipe, C Liedtke, N Marschner, V Möbus, H Scheithauer, A Schneeweiss, C Thomssen, C Jackisch, M W Beckmann, J-U Blohmer, S-D Costa, T Decker, I Diel, P A Fasching, T Fehm, W Janni, H-J Lück, N Maass, A Scharl, S Loibl
For the first time, this year's St. Gallen International Consensus Conference on the treatment of patients with primary breast cancer, which takes place every two years, was held not in St. Gallen (Switzerland) but - for logistical reasons - in Vienna (Austria) under its usual name. The 2015 St. Gallen International Consensus Conference was the 14th of its kind. As the international panel of the St. Gallen conference consists of experts from different countries, the consensus mirrors an international cross-section of opinions...
June 2015: Geburtshilfe und Frauenheilkunde
https://www.readbyqxmd.com/read/25778290/fighting-against-human-papillomavirus-the-25-year-old-contribution-of-the-university-of-crete-school-of-medicine
#9
Ioannis N Mammas, Demetrios A Spandidos
Twenty five years have passed since the first research efforts in Greece on human papillomavirus (HPV) performed by the Department of Clinical Virology at the University of Crete School of Medicine. HPV infection in the human cervix was initially evaluated in relation to the host mutational and transcriptional activation of the ras/raf genes pathway, p53 gene polymorphisms, neo-angiogenesis- related gene expression and G1/S phase transition. A series of epidemiological studies ensued, evaluating HPV infection in the ophthalmic pterygium, benign laryngeal tumors, parotid lesions, nasal polyposis, actinic keratosis, aborted material and non-genital cancers...
January 2015: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/25672584/the-frequency-of-and-risk-factors-for-the-use-of-bisphosphonates-in-the-adjuvant-setting-of-primary-breast-cancer-in-germany
#10
Eva-Maria Fick, Alexander Katalinic, Annika Waldmann
PURPOSE: The aim of this cross-sectional health care study (use of bisphosphonates in primary tumors of the mammae, EBisMa) is to determine how often bisphosphonate medication is used in patients with non-metastatic primary breast cancer treatment, but who do not suffer from osteoporosis. Furthermore, we describe patients' characteristics and the most frequently used type of bisphosphonate in adjuvant therapy. MATERIALS AND METHODS: The study population included primary breast cancer patients of four breast centers in northern Germany...
October 2015: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/25666196/merkel-cell-polyomavirus-infection-in-childhood-current-advances-and-perspectives
#11
REVIEW
George Sourvinos, Ioannis N Mammas, Demetrios A Spandidos
Merkel cell polyomavirus (MCPyV) is a newly discovered human small, non-enveloped, double-stranded DNA virus, which was classified into the Polyomaviridae family. MCPyV is acquired in early childhood through close contact involving respiratory tract secretions and causes a widespread, previously unrecognised, asymptomatic infection in both immunocompetent children and adults. To date, several researchers have established that MCPyV is the potential causative agent of Merkel cell carcinoma, a relatively rare but life-threatening skin cancer of neuroendocrine origin...
April 2015: Archives of Virology
https://www.readbyqxmd.com/read/25666016/tamoxifen-resistance-from-cell-culture-experiments-towards-novel-biomarkers
#12
REVIEW
Norbert Nass, Thomas Kalinski
Tamoxifen is still the most frequently used antiestrogen for the treatment of patients with premenopausal, estrogen receptor positive breast cancer. However, in 20-30% of these cases, tamoxifen therapy fails due to an existing or developing resistance. The prediction of tamoxifen resistance by appropriate biomarker analysis and the development of novel therapies for tamoxifen resistance in premenopausal breast cancer is, therefore, an important goal of ongoing research. Tamoxifen resistance is associated with altered estrogen receptor expression especially on the plasma membrane, including the alternative G-protein coupled receptor GPR-30 (GPER) and estrogen receptor splice products, such as ERα36...
March 2015: Pathology, Research and Practice
https://www.readbyqxmd.com/read/25293859/-screening-mammography-may-be-a-rapid-and-effective-investigation-of-mamma-cancer-in-asymptomatic-women
#13
Mette Bach Larsen, Vivian Langagergaard, Heidi Larsson, Ellen M Mikkelsen, Berit Andersen
The purpose of this article was to describe the incidence of mamma cancer and ductal carcinoma in situ (DCIS) two years after a screening mammography in women offered a screening mammography instead of a clinical mammography. The mammography was abnormal for 6.3% of the women, 0.1% had DCIS and 1.0% was diagnosed with mamma cancer. 1.0% of women with a normal mammography were diagnosed with cancer within two years of the mammography. More widespread use of screening mammography may contribute to a rapid and effective investigation of mamma cancer in asymptomatic women...
September 1, 2014: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/25056489/tuberculous-mastitis-presenting-as-a-lump-a-mimicking-disease-in-a-pregnant-woman-case-report-and-review-of-literature
#14
A Brouwer, N Degrieck, M Rasschaert, F Lockefeer, M Huizing, W Tjalma
Tuberculosis (TB) of the breast is a rare entity, and can be confused with many other breast disorders, like mamma carcinoma or inflammatory breast cancer. When finding granulomatous mastitis (GM) on histology, it is important to make a differential diagnosis and seek actively for clues on the presence of tuberculosis, sarcoidosis, Wegener's granulomatosis, or idiopathic granulomatous mastitis, since treatment strategies differ and maltreatment has major implications on morbidity and mortality. An extensive clinical evaluation, laboratory work up, and imaging will lead in most cases to the right diagnosis...
October 2014: Acta Clinica Belgica
https://www.readbyqxmd.com/read/25013461/the-paediatric-story-of-human-papillomavirus-review
#15
Ioannis N Mammas, George Sourvinos, Demetrios A Spandidos
Human papillomavirus (HPV) is composed of a particularly heterogeneous family of DNA viruses, which has gained much attention in recent years due to the discoveries of Professor Harald zur Hausen, who first identified a connection between HPV and cervical cancer. Professor Harald zur Hausen, the 'Father of HPV Virology', was the recipient of the 2008 Nobel Prize. HPV can be transmitted through physical contact via autoinoculation or fomites, sexual contact, as well as vertically from the HPV-positive mother to her newborn, causing subclinical or clinical infections...
August 2014: Oncology Letters
https://www.readbyqxmd.com/read/24983248/differential-response-to-%C3%AE-oxoaldehydes-in-tamoxifen-resistant-mcf-7-breast-cancer-cells
#16
Norbert Nass, Hans-Jürgen Brömme, Roland Hartig, Sevil Korkmaz, Saadettin Sel, Frank Hirche, Aoife Ward, Andreas Simm, Stefan Wiemann, Anne E Lykkesfeldt, Albert Roessner, Thomas Kalinski
Tamoxifen is the standard adjuvant endocrine therapy for estrogen-receptor positive premenopausal breast cancer patients. However, tamoxifen resistance is frequently observed under therapy. A tamoxifen resistant cell line has been generated from the estrogen receptor positive mamma carcinoma cell line MCF-7 and was analyzed for putative differences in the aldehyde defence system and accumulation of advanced glycation end products (AGE). In comparison to wt MCF-7 cells, these tamoxifen resistant cells were more sensitive to the dicarbonyl compounds glyoxal and methylglyoxal and displayed increased caspase activity, p38-MAPK- and IκBα-phosphorylation...
2014: PloS One
https://www.readbyqxmd.com/read/24944550/local-treatment-of-the-axilla-in-early-breast-cancer-concepts-from-the-national-surgical-adjuvant-breast-and-bowel-project-b-04-to-the-planned-intergroup-sentinel-mamma-trial
#17
REVIEW
Toralf Reimer, Steffi Hartmann, Angrit Stachs, Bernd Gerber
Local treatment of the axilla in clinically node-negative, early-stage breast cancer patients has been hotly debated after the release of the American College of Surgeons Oncology Group (ACOSOG) Z0011 findings. However, this review does not focus on the 'Z0011-eligible' patients alone, because this subgroup represents a minority of our patients undergoing breast-conserving surgery (BCS) and sentinel lymph node biopsy (SLNB). The following topics are discussed: axillary diagnostics, timing of axillary procedures in the neoadjuvant setting, long-term follow-up of SLNB trials, omission of axillary surgery in randomized trials, management of the involved axilla with low tumor volume, positive sentinel lymph nodes and BCS, involved sentinel lymph nodes and mastectomy, and axillary radiotherapy...
May 2014: Breast Care
https://www.readbyqxmd.com/read/24816597/trastuzumab-herceptin-a-retrospective-analysis-of-the-effects-of-long-term-application-in-a-series-of-patients-with-breast-cancer
#18
Simona Moga, Stephanie Juhasz-Böss, David Bardens, Nicole Kranzhöfer, Sogand Nemat, Erich-Franz Solomayer, Ingolf Juhasz-Böss
INTRODUCTION: About 20 % of all mamma carcinomas are HER2 positive. The overexpression of HER2 is considered to be a negative prognostic factor. Trastuzumab is a monoclonal anti-HER2 antibody developed to target HER2 overexpressing tumor cells. So far, there is only little data available on long-term effects of trastuzumab. This is why we analyzed the medical records of our patient collective with respect to tolerability and oncological outcomes of long-term trastuzumab treatment. MATERIALS AND METHODS: Our retrospective observational study included all patients of the Saarland University Hospital with breast cancer who received trastuzumab for more than 18 months between 2003 and 2012...
October 2014: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/24605603/-carcinogenic-aspects-of-indeterministic-effects-of-ionizing-radiation
#19
REVIEW
M M Tkachenko, T F Liubarets'
The results of clinical and epidemiological investigations on cancer diseases with different localization in irradiated persons are reviewed in the paper. The data on mechanisms of morbidity of mamma, thyroid, broncho-pulmonary, blood cancer in exposed to different doses of ionizing radiation persons are analyzed.
2013: Fiziolohichnyĭ Zhurnal
https://www.readbyqxmd.com/read/24391408/human-papilloma-virus-hpv-vaccination-in-childhood-challenges-and-perspectives
#20
REVIEW
I Mammas, F Maher, M Theodoridou, D Spandidos
Vaccination against human papilloma virus (HPV) in childhood is a significant step forward in the reduction of HPV associated morbidity and mortality and a considerable scientific achievement. However, many challenges remain to be overcome if an effective HPV vaccine programme is to be successfully introduced worldwide. The aim of this review is to identify and summarize the new issues concerning HPV vaccination that have emerged since its introduction into clinical practice in school-aged girls. According to the literature, the overall impact of HPV vaccination on cervical cancer is unlikely to be apparent for the next decade...
October 2011: Hippokratia
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