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301
22431001_9
This article is a US Government work and is in the public domain in the USA .
[ "none" ]
302
12665307_0
Neutrophils have become recognised as important contributors to the effectiveness of tumour eradication by photodynamic therapy ( PDT ) .
[ "none" ]
303
12665307_1
In this study , we have used the mouse SCCVII squamous cell carcinoma model to investigate the activity of neutrophils in tumours treated by PDT .
[ "none" ]
304
12665307_2
Tumour levels of neutrophilic myeloperoxidase ( MPO ) demonstrated not only a massive and sustained sequestration of these cells in PDT-treated tumours but also revealed their activated state evidenced by the presence of released MPO .
[ "none" ]
305
12665307_3
Among the adhesion molecules expressed on tumour vascular endothelium , ICAM-1 appears to be of primary importance in the invasion of neutrophils into PDT-treated tumours , because its functional blocking with monoclonal antibodies reduced the tumour cure rate .
[ "none" ]
306
12665307_4
A marked upregulation of its ligands CD11b/CD18 and CD11c/CD18 found on neutrophils associated with PDT-treated tumours supports this assumption .
[ "none" ]
307
12665307_5
To evaluate the role of inflammatory cytokines regulating neutrophil activity , neutralising antibodies were given to mice before PDT treatment .
[ "none" ]
308
12665307_6
The results suggest that IL-1beta activity is critical for the therapeutic outcome , since its neutralisation diminished the cure rates of PDT-treated tumours .
[ "none" ]
309
12665307_7
No significant effect was observed with anti-IL-6 and anti-TNF-alpha treatment .
[ "none" ]
310
12665307_8
Further flow cytometry-based examination of neutrophils round in PDT-treated tumours revealed that these cells express MHC class II molecules , which suggests their engagement as antigen-presenting cells and involvement in the development of antitumour immune response .
[ "tumor promoting inflammation" ]
311
12831059_0
There is increasing evidence for the implication of tumor-derived angiogenic and anti-angiogenic factors in controlling tumor growth in vivo .
[ "none" ]
312
12831059_1
In this study , we documented the production of inhibitors of angiogenesis by pancreatic cancer cells and examined how changes in the balance between pro- and anti-angiogenic factors regulate tumor growth in vivo .
[ "none" ]
313
12831059_2
The human pancreatic cancer cell line Hs-776T ( HS-W ) produces slow-growing tumors in SCID mice .
[ "none" ]
314
12831059_3
Cells of a variant form ( HS-R ) of Hs-776T produced faster-growing tumors compared to HS-W .
[ "none" ]
315
12831059_4
Characterization of HS-W and HS-R cells in vitro showed similar proliferation rates and production of the angiogenic factors vascular endothelial growth factor ( VEGF ) and basic fibroblast growth factor ( bFGF ) .
[ "inducing angiogenesis" ]
316
12831059_5
Analyzes of anti-angiogenic factors showed comparable levels of angiostatin and thrombospondin 1 and 2 , but endostatin was only detected in conditioned media of HS-W cells and was absent in HS-R .
[ "inducing angiogenesis" ]
317
12831059_6
Cell proliferation was similar in both tumor types in vivo , whereas HS-W tumors demonstrated increased apoptosis with a high percentage of apoptotic endothelial cells ( EC ) .
[ "resisting cell death", "sustaining proliferative signaling" ]
318
12831059_7
Subsequently , VEGF was over-expressed in Hs-776T cells ( HS-VF ) , resulting in rapidly growing tumors and lowering tumor and EC apoptosis .
[ "none" ]
319
12831059_8
Collectively , our study confirms that tumor growth is dependent on its ability to increase the angiogenic stimulus or to reduce the amounts of endogenous anti-angiogenic factors .
[ "inducing angiogenesis" ]
320
20679748_0
AIM To compare the value of intravenous contrast-enhanced ultrasonography ( US ) , intravenous contrast-enhanced computed tomography ( CT ) , and magnetic resonance imaging ( MRI ) in the diagnosis of hepatic hemangiomas .
[ "none" ]
321
20679748_1
MATERIAL AND METHODS The study enrolled 48 patients , aged between 20 and 79 years ( 35 [ 72.9% ] women , 13 [ 27.1% ] men ; mean age , 53.5+/-12.855 years ) , who were examined and treated in the Departments of Gastroenterology , Surgery , and Oncology , Hospital of Kaunas University of Medicine , in the year 2007 .
[ "none" ]
322
20679748_2
All patients underwent intravenous contrast-enhanced US , intravenous contrast-enhanced CT , and MRI and were diagnosed with hepatic hemangioma according to the findings of these examinations .
[ "none" ]
323
20679748_3
RESULTS The size of hemangiomas was < or =2.0 cm in 20 cases ( 41.7% ) and >2.0 cm in 28 ( 58.3% ) .
[ "none" ]
324
20679748_4
No association between hepatic hemangioma and patient's age was found ( chi(2)=0.547 , df=2 , P=0.761 ) .
[ "none" ]
325
20679748_5
Nearly one-third of hemangiomas were located in the segment IV of the left hepatic lobe .
[ "none" ]
326
20679748_6
There were a few complicated hemangiomas in the study sample : 2 with calcification and 1 with necrosis .
[ "resisting cell death" ]
327
20679748_7
The sensitivity of CT in the diagnosis of hepatic hemangioma was 76.92% ; specificity , 33.3% ; positive prognostic value , 83.3% ; and negative prognostic value , 25.0% .
[ "none" ]
328
20679748_8
The sensitivity of intravenous contrast-enhanced US in the diagnosis of hepatic hemangioma was 77.8% ; specificity , 100% ; positive prognostic value , 100% ; and negative prognostic value , 23.1% .
[ "none" ]
329
20679748_9
CONCLUSIONS Intravenous contrast-enhanced US is more specific than intravenous contrast-enhanced CT in the diagnosis of hepatic hemangioma ( P=0.0005 ) and has a higher positive prognostic value ( P=0.001 ) .
[ "none" ]
330
23024612_0
BACKGROUND Angiogenic factors following oncological surgery is important in tumor recurrence .
[ "none" ]
331
23024612_1
Vascular endothelial growth factor ( VEGF ) , angiopoietin 1 ( Ang-1 ) , Ang-2 , soluble VEGF-receptor 1 ( sVEGFR1 ) and sVEGFR2 may influence angiogenesis .
[ "none" ]
332
23024612_2
This prospective study examined the influence of open and video-assisted thoracic surgery ( VATS ) lung resections for early stage non-small cell lung cancer ( NSCLC ) on postoperative circulating angiogenic factors .
[ "none" ]
333
23024612_3
METHODS Forty-three consecutive patients underwent major lung resection through either VATS ( n = 23 ) or Open thoracotomy ( n = 20 ) over an 8-month period .
[ "none" ]
334
23024612_4
Blood samples were collected preoperatively and postoperatively on days ( POD ) 1 and 3 for enzyme linked immunosorbent assay determination of angiogenic factors .
[ "none" ]
335
23024612_5
RESULTS Patient demographics were comparable .
[ "none" ]
336
23024612_6
For all patients undergoing major lung resection , postoperative Ang-1 and sVEGFR2 levels were significantly decreased , while Ang-2 and sVEGFR1 levels markedly increased .
[ "inducing angiogenesis" ]
337
23024612_7
No significant peri-operative changes in VEGF levels were observed .
[ "inducing angiogenesis" ]
338
23024612_8
Compared with open group , VATS had significantly lower plasma levels of VEGF ( VATS 170 ± 93 pg/mL ; Open 486 ± 641 pg/mL ; P = 0.04 ) and Ang-2 ( VATS 2484 ± 1119 pg/mL ; Open 3379 ± 1287 pg/mL ; P = 0.026 ) on POD3 .
[ "inducing angiogenesis" ]
339
23024612_9
CONCLUSIONS Major lung resection for early stage NSCLC leads to a pro-angiogenic status , with increased Ang-2 and decreased Ang-1 productions .
[ "inducing angiogenesis" ]
340
23024612_10
VATS is associated with an attenuated angiogenic response with lower circulating VEGF and Ang-2 levels compared with open .
[ "inducing angiogenesis" ]
341
23024612_11
Such differences in angiogenic factors may be important in lung cancer biology and recurrence following surgery .
[ "inducing angiogenesis" ]
342
21541970_0
BACKGROUND Prostate cancer ( PCa ) progression is often associated with transactivation of the androgen receptor ( AR ) by endogenous hormones/growth factors .
[ "none" ]
343
21541970_1
One such factor affecting growth , proliferation , and apoptostis ( pro-/anti- ) in various cancers is the adipokine leptin .
[ "none" ]
344
21541970_2
This research studied leptin-induced signaling and apoptosis in androgen sensitive ( LNCaP , PC3/AR ) and insensitive ( PC3 , DU145 ) PCa cell lines .
[ "none" ]
345
21541970_3
METHODS Signaling was studied by immunoblotting in cells overexpressing leptin receptors ( LRb ) , Janus kinase 2 ( JAK2 ) , and kinase negative-HER2-YFP cDNAs .
[ "none" ]
346
21541970_4
Apoptosis was measured by immunoblotting of apoptotic proteins and by Hoechst staining of condensed DNA .
[ "none" ]
347
21541970_5
RESULTS Leptin rapidly induced activation of JAK2 , STAT3 , and MAPK ( ERK1/2 ) signaling cascades ; it may also induce HER2 transactivation via leptin-induced phospho-JAK2 .
[ "sustaining proliferative signaling" ]
348
21541970_6
Leptin was then shown to exert clear pro-apoptotic effects , increasing levels of caspase 3 , cleavage of its substrate , poly ( ADP-ribose ) polymerase ( PARP ) to cleaved PARP(89) , levels of CK 18 , a cytoskeletal protein formed during apoptosis , and DNA condensation .
[ "resisting cell death" ]
349
21541970_7
Kinase inhibitors indicated that leptin-induced apoptosis is probably mediated by balanced activation of JAK2/STAT3 , p38 MAPK , and PKC pathways in PCa cells .
[ "sustaining proliferative signaling" ]
350
21541970_8
A human leptin mutein LRb antagonist , L39A/D40A/F41A , fully inhibited leptin-induced phosphorylation of JAK2 , ERK1/2 , and Akt/PKB , and partially abrogated effects on apoptotic proteins .
[ "resisting cell death", "sustaining proliferative signaling" ]
351
21541970_9
In LNCaP and PC3/AR cells , leptin increased AR protein levels in correlation with raised apoptotic markers .
[ "resisting cell death" ]
352
21541970_10
Thus , AR may mediate , at least partly , the leptin-induced apoptotic response .
[ "resisting cell death" ]
353
21541970_11
CONCLUSIONS Leptin can clearly induce apoptosis in human PCa cell lines .
[ "resisting cell death" ]
354
21541970_12
These findings could lead to development of new leptin agonists with enhanced pro-apoptotic effects and targeted for use in human PCa .
[ "none" ]
355
23300887_0
Novel strategies are necessary to improve chemotherapy response in advanced and recurrent endometrial cancer .
[ "none" ]
356
23300887_1
Here , we demonstrate that terpenoids present in the Steam Distilled Extract of Ginger ( SDGE ) are potent inhibitors of proliferation of endometrial cancer cells .
[ "none" ]
357
23300887_2
SDGE , isolated from six different batches of ginger rhizomes , consistently inhibited proliferation of the endometrial cancer cell lines Ishikawa and ECC-1 at IC(50) of 1.25 �g/ml .
[ "none" ]
358
23300887_3
SDGE also enhanced the anti-proliferative effect of radiation and cisplatin .
[ "none" ]
359
23300887_4
Decreased proliferation of Ishikawa and ECC-1 cells was a direct result of SDGE-induced apoptosis as demonstrated by FITC-Annexin V staining and expression of cleaved caspase 3 .
[ "resisting cell death" ]
360
23300887_5
GC/MS analysis identified a total of 22 different terpenoid compounds in SDGE , with the isomers neral and geranial constituting 30-40% .
[ "none" ]
361
23300887_6
Citral , a mixture of neral and geranial inhibited the proliferation of Ishikawa and ECC-1 cells at an IC(50) 10 �M ( 2.3 �g/ml ) .
[ "none" ]
362
23300887_7
Phenolic compounds such as gingerol and shogaol were not detected in SDGE and 6-gingerol was a weaker inhibitor of the proliferation of the endometrial cancer cells .
[ "none" ]
363
23300887_8
SDGE was more effective in inducing cancer cell death than citral , suggesting that other terpenes present in SDGE were also contributing to endometrial cancer cell death .
[ "resisting cell death" ]
364
23300887_9
SDGE treatment resulted in a rapid and strong increase in intracellular calcium and a 20-40% decrease in the mitochondrial membrane potential .
[ "none" ]
365
23300887_10
Ser-15 of p53 was phosphorylated after 15 min treatment of the cancer cells with SDGE .
[ "none" ]
366
23300887_11
This increase in p53 was associated with 90% decrease in Bcl2 whereas no effect was observed on Bax .
[ "resisting cell death" ]
367
23300887_12
Inhibitor of p53 , pifithrin-α , attenuated the anti-cancer effects of SDGE and apoptosis was also not observed in the p53(neg) SKOV-3 cells .
[ "resisting cell death" ]
368
23300887_13
Our studies demonstrate that terpenoids from SDGE mediate apoptosis by activating p53 and should be therefore be investigated as agents for the treatment of endometrial cancer .
[ "resisting cell death" ]
369
22019117_0
Inflammatory responses and associated products have been implicated in cancer metastasis .
[ "none" ]
370
22019117_1
However , the relationship between these two processes is uncertain due to the lack of a suitable model .
[ "none" ]
371
22019117_2
Taking advantage of localized and controllable inflammatory responses induced by biomaterial implantation and the capability of tissue scaffolds to release a wide variety of chemokines , we report a novel system for studying the molecular mechanisms of inflammation-mediated cancer metastasis .
[ "none" ]
372
22019117_3
The animal model is comprised of an initial subcutaneous implantation of biomaterial microspheres which prompt localized inflammatory responses , followed by the transplantation of metastatic cancer cells into the peritoneal cavity or blood circulation .
[ "none" ]
373
22019117_4
Histological results demonstrated that substantial numbers of B16F10 cells were recruited to the site nearby biomaterial implants .
[ "none" ]
374
22019117_5
There was a strong correlation between the degree of biomaterial-mediated inflammatory responses and number of recruited cancer cells .
[ "none" ]
375
22019117_6
Inflammation-mediated cancer cell migration was inhibited by small molecule inhibitors of CXCR4 but not by neutralizing antibody against CCL21 .
[ "none" ]
376
22019117_7
Using chemokine-releasing scaffolds , further studies were carried out to explore the possibility of enhancing cancer cell recruitment .
[ "none" ]
377
22019117_8
Interestingly , erythropoietin ( EPO ) releasing scaffolds , but not stromal cell-derived factor-1α-releasing scaffolds , were found to accumulate substantially more melanoma cells than controls .
[ "none" ]
378
22019117_9
Rather unexpectedly , perhaps by indirectly reducing circulating cancer cells , mice implanted with EPO-releasing scaffolds had longer life span than other groups .
[ "none" ]
379
22019117_10
These results suggest that chemokine-releasing scaffolds may potentially function as implantable cancer traps and serve as powerful tools for studying cancer distraction and even selective annihilation of circulating metastatic cancer cells .
[ "none" ]
380
11901535_0
It is well known that cell-mediated immunity is suppressed in patients with neoplastic diseases .
[ "none" ]
381
11901535_1
We have reported that soluble receptors for interleukin-2 ( sIL-2R ) and tumor necrosis factor ( sTNF-R1 ) are elevated in the serum of patients with advanced colorectal cancer .
[ "none" ]
382
11901535_2
The presence of these soluble receptors and immunosuppressive cytokines , including interleukin-10 ( IL-10 ) , might be important in the mechanisms of immunosuppression. cis-Diaminedichloroplatinum ( cisplatin ) has been reported to immunomodulate , especially when used in low dose in combination with 5-Fluorouracil ( 5-FU ) .
[ "none" ]
383
11901535_3
In this study , cisplatin and UFT , a form of uracil and tegafur which is a prodrug of 5-FU , were administered with immunomodulator Polysaccharide K ( PSK ) to ten patients with colorectal cancer , who showed distant metastasis in the liver or lung , and the serum levels of sIL-2R and sTNF-R1 and the production of gamma-interferon ( gamma-INF ) and interleukin-10 by peripheral blood mononuclear cells were measured .
[ "activating invasion and metastasis" ]
384
11901535_4
The serum concentrations of sIL-2R and the production of IL-10 were reduced ( p < 0.05 ) after 2 months of treatment .
[ "none" ]
385
11901535_5
Thus , this combination appeared to have immunomodulative potential in patients with advanced colorectal cancer .
[ "avoiding immune destruction" ]
386
22408395_0
MicroRNAs ( miRNAs ) are small non-coding RNAs of nucleotides that function as negative regulators of gene expression by either inhibiting translation or inducing deadenylation-dependent degradation of target transcripts .
[ "none" ]
387
22408395_1
Notably , deregulation of miRNAs expression is associated with the initiation and progression of human cancers where they act as oncogenes or tumor suppressors contributing to tumorigenesis .
[ "none" ]
388
22408395_2
Abnormal miRNA expression may provide potential diagnostic and prognostic tumor biomarkers and new therapeutic targets in cancer .
[ "none" ]
389
22408395_3
Recently , several miRNAs have been shown to initiate invasion and metastasis by targeting multiple proteins that are major players in these cellular events , thus they have been denominated as metastamiRs .
[ "none" ]
390
22408395_4
Here , we present a review of the current knowledge of miRNAs in cancer with a special focus on metastamiRs .
[ "none" ]
391
22408395_5
In addition we discuss their potential use as novel specific markers for cancer progression .
[ "none" ]
392
22366308_0
An acquired mutation ( T790M ) in the epidermal growth factor receptor ( EGFR ) accounts for half of all relapses in non-small cell lung cancer ( NSCLC ) patients who initially respond to EGFR kinase inhibitors .
[ "none" ]
393
22366308_1
In this study , we demonstrated for the first time that EGFR-T790M interacts with the cytoskeletal components , myosin heavy chain 9 ( MYH9 ) and β-actin , in the nucleus of H1975 cells carrying the T790M-mutant EGFR .
[ "sustaining proliferative signaling" ]
394
22366308_2
The interactions of EGFR with MYH9 and β-actin were reduced in the presence of blebbistatin , a specific inhibitor for the MYH9-β-actin interaction , suggesting that the EGFR interaction with MYH9 and β-actin is affected by the integrity of the cytoskeleton .
[ "sustaining proliferative signaling" ]
395
22366308_3
These physical interactions among MYH9 , β-actin , and EGFR were also impaired by CL-387,785 , a kinase inhibitor for EGFR-T790M .
[ "none" ]
396
22366308_4
Furthermore , CL-387,785 and blebbistatin interacted in a synergistic fashion to suppress cell proliferation and induce apoptosis in H1975 cells .
[ "resisting cell death", "sustaining proliferative signaling" ]
397
22366308_5
The combination of CL-387,785 and blebbistatin enhanced the down-regulation of cyclooxygenase-2 ( COX-2 ) , a transcriptional target of nuclear EGFR .
[ "none" ]
398
22366308_6
Overall , our findings demonstrate that disrupting EGFR interactions with the cytoskeletal components enhanced the anti-cancer effects of CL-387,785 against H1975 cells , suggesting a novel therapeutic approach for NSCLC cells that express the drug-resistant EGFR-T790M .
[ "none" ]
399
22668016_0
The results of experimental studies have indicated the pleiotropic effects of statins in organism , e.g. the influence on cell cycle , apoptosis or angiogenesis .
[ "none" ]
400
22668016_1
In this study , the effects of simvastatin on selected parameters of apoptosis and proliferation in chemocarcinogen-induced mammary tumorigenesis in female rats were determined .
[ "none" ]