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Träfflista för sökning "hsv:(MEDICIN OCH HÄLSOVETENSKAP) hsv:(Klinisk medicin) hsv:(Cancer och onkologi) "

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11.
  • Belfrage, Per, et al. (författare)
  • Dispersion of viable pig liver cells with collagenase
  • 1975
  • Ingår i: Life Sciences. - Elsevier. - 1879-0631. ; 17:8, s. 1219-1225
  • Tidskriftsartikel (refereegranskat)abstract
    • Viable suspended hepatocytes were prepared from surgical biopsy specimens of pig and human liver by digestion with collagenase. Initial perfusion of the tissue through cannulated blood vessels with 0.5 mM EGTA followed by 0.2% collagenase gave the best results. 20−870 × 106 cells of which 60–95 % excluded trypan blue were obtained from 5–30 g pig liver pieces, while results with human liver specimens were usually less satisfactory. In some experiments, however, viable cells, as judged by vital stain exclusion and ability to synthesize lipids were obtained in sufficient yield. In the pig hepatocytes glycerolipid synthesis from [3H] glycerol and oxidation and esterification of [14C] oleic acid had the same characteristics as those observed earlier in rat hepatocytes.
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12.
13.
  • Bhoo-Pathy, Nirmala, et al. (författare)
  • Intake of Coffee, Decaffeinated Coffee, or Tea Does Not Affect Risk for Pancreatic Cancer : Results From the European Prospective Investigation into Nutrition and Cancer Study
  • 2013
  • Ingår i: Clinical Gastroenterology and Hepatology. - Elsevier. - 1542-3565. ; 11:11, s. 1486-1492
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND & AIMS: Few modifiable risk factors have been implicated in the etiology of pancreatic cancer. There is little evidence for the effects of caffeinated coffee, decaffeinated coffee, or tea intake on risk of pancreatic cancer. We investigated the association of total coffee, caffeinated coffee, decaffeinated coffee, and tea consumption with risk of pancreatic cancer.METHODS: This study was conducted within the European Prospective Investigation into Nutrition and Cancer cohort, comprising male and female participants from 10 European countries. Between 1992 and 2000, there were 477,312 participants without cancer who completed a dietary questionnaire, and were followed up to determine pancreatic cancer incidence. Coffee and tea intake was calibrated with a 24-hour dietary recall. Adjusted hazard ratios (HRs) were computed using multivariable Cox regression.RESULTS: During a mean follow-up period of 11.6 y, 865 first incidences of pancreatic cancers were reported. When divided into fourths, neither total intake of coffee (HR, 1.03; 95% confidence interval [CI], 0.83-1.27; high vs low intake), decaffeinated coffee (HR, 1.12; 95% CI, 0.76-1.63; high vs low intake), nor tea were associated with risk of pancreatic cancer (HR, 1.22, 95% CI, 0.95-1.56; high vs low intake). Moderately low intake of caffeinated coffee was associated with an increased risk of pancreatic cancer (HR, 1.33; 95% CI, 1.02-1.74), compared with low intake. However, no graded dose response was observed, and the association attenuated after restriction to histologically confirmed pancreatic cancers.CONCLUSIONS: Based on an analysis of data from the European Prospective Investigation into Nutrition and Cancer cohort, total coffee, decaffeinated coffee, and tea consumption are not related to the risk of pancreatic cancer.
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14.
  • Hammarfjord, Oscar, et al. (författare)
  • Surgical treatment of recurring ameloblastoma, are there options?
  • 2013
  • Ingår i: The British journal of oral & maxillofacial surgery. - 1532-1940. ; 51:8
  • Tidskriftsartikel (refereegranskat)abstract
    • Our aim was to evaluate the treatment given to patients with intraosseus ameloblastomas with special emphasis on recurrence and the outcomes of primary and secondary resection. Forty-eight patients who were treated for intraosseous ameloblastoma at 8 centres across Sweden met the inclusion criteria. They showed typical distribution of age, sex, site of lesion, and characteristic presenting features. Eleven of the 48 were initially treated with radical resection and none recurred. Twenty-two of the remaining 37 who were initially treated by conservative resection presented with recurrences. Sixteen of the 22 then had conservative secondary resections, which resulted in further recurrence in 6 patients. Initial radical resection is therefore superior to conservative management as far as recurrences are concerned. We argue, however, that a conservative surgical approach is adequate for many intraosseous ameloblastomas with limited extension, because relapse can be followed by radical resection if clinically indicated in selected cases.
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15.
  • Wennergren, Göran, 1947- (författare)
  • Medicinarminnen som fängslar
  • 2019
  • Ingår i: Läkartidningen. - 0023-7205.
  • Recension (övrigt vetenskapligt)
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16.
  • Thulin, Helena, et al. (författare)
  • Defecation disturbances after cystectomy for urinary bladder cancer
  • 2011
  • Ingår i: BJU International. - Blackwell Publishing Ltd. - 1464-4096. ; 108:2, s. 196-203
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE To describe and compare long-term defecation disturbances in patients who had undergone a cystectomy due to urinary bladder cancer with non-continent urostomies, continent reservoirs and orthotopic neobladder urinary diversions. PATIENTS AND METHODS During their follow-up we attempted to contact all men and women aged 30-80 years who had undergone cystectomy and urinary diversion at seven Swedish hospitals. During a qualitative phase we identified defecation disturbances as a distressful symptom and included this item in a study-specific questionnaire together with freehand comments. The patients completed the questionnaire at home. Outcome variables were dichotomized and the results are presented as relative risks with 95% confidence interval. RESULTS The questionnaire was returned from 452 (92%) of 491 identified patients. Up to 30% reported problems with the physiological emptying process of stool (bowel movement, sensory rectal function, awareness of need for defecation, motoric rectal and anal function, straining ability). A sense of decreased straining capacity was reported by 20% of the men and women with non-continent urostomy and 14% and 8% of those with continent reservoirs and orthotopic neobladders, respectively. CONCLUSIONS Of the cystectomized individuals 30% reported problems with the physiological emptying process of stool (bowel movement, sensory rectal function, awareness of need for defecation, motoric rectal and anal function, straining ability). Those wanting to improve the situation for bladder cancer survivors may consider communicating before surgery the possibility of stool-emptying problems, and asking about them after surgery.
17.
  • Svensson, Katrin, et al. (författare)
  • Hypoxia triggers a proangiogenic pathway involving cancer cell microvesicles and PAR-2-mediated heparin-binding EGF signaling in endothelial cells.
  • 2011
  • Ingår i: Proceedings of the National Academy of Sciences. - National Acad Sciences. - 1091-6490. ; 108:32, s. 13147-13152
  • Tidskriftsartikel (refereegranskat)abstract
    • Highly malignant tumors, such as glioblastomas, are characterized by hypoxia, endothelial cell (EC) hyperplasia, and hypercoagulation. However, how these phenomena of the tumor microenvironment may be linked at the molecular level during tumor development remains ill-defined. Here, we provide evidence that hypoxia up-regulates protease-activated receptor 2 (PAR-2), i.e., a G-protein-coupled receptor of coagulation-dependent signaling, in ECs. Hypoxic induction of PAR-2 was found to elicit an angiogenic EC phenotype and to specifically up-regulate heparin-binding EGF-like growth factor (HB-EGF). Inhibition of HB-EGF by antibody neutralization or heparin treatment efficiently counteracted PAR-2-mediated activation of hypoxic ECs. We show that PAR-2-dependent HB-EGF induction was associated with increased phosphorylation of ERK1/2, and inhibition of ERK1/2 phosphorylation attenuated PAR-2-dependent HB-EGF induction as well as EC activation. Tissue factor (TF), i.e., the major initiator of coagulation-dependent PAR signaling, was substantially induced by hypoxia in several types of cancer cells, including glioblastoma; however, TF was undetectable in ECs even at prolonged hypoxia, which precludes cell-autonomous PAR-2 activation through TF. Interestingly, hypoxic cancer cells were shown to release substantial amounts of TF that was mainly associated with secreted microvesicles with exosome-like characteristics. Vesicles derived from glioblastoma cells were found to trigger TF/VIIa-dependent activation of hypoxic ECs in a paracrine manner. We provide evidence of a hypoxia-induced signaling axis that links coagulation activation in cancer cells to PAR-2-mediated activation of ECs. The identified pathway may constitute an interesting target for the development of additional strategies to treat aggressive brain tumors.
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18.
  • Adolfsson, Jan, et al. (författare)
  • Clinical characteristics and primary treatment of prostate cancer in Sweden between 1996 and 2005 - Data from the national prostate cancer register in Sweden
  • 2007
  • Ingår i: Scandinavian Journal of Urology and Nephrology. - Taylor & Francis. - 0036-5599. ; 41:6, s. 456-477
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective. The incidence of prostate cancer is rising rapidly in Sweden and there is a need to better understand the pattern of diagnosis, tumor characteristics and treatment. Material and methods. Between 1996 and 2005, all new cases of adenocarcinoma of the prostate gland were intended to be registered in the National Prostate Cancer Register (NPCR). This register contains information on diagnosing unit, date of diagnosis, cause of diagnosis, tumor grade, tumor stage according to the TNM classification in force, serum prostate-specific antigen (PSA) levels at diagnosis and primary treatment given within the first 6 months after diagnosis. Results. In total, 72 028 patients were registered, comprising > 97% of all pertinent incident cases of prostate cancer in the Swedish Cancer Register (SCR). During the study period there was a considerable decrease in median age at the time of diagnosis, a stage migration towards smaller tumors, a decrease in median serum PSA values at diagnosis, a decrease in the age-standardized incidence rate of men diagnosed with distant metastases or with a PSA level of > 100 ng/ml at diagnosis and an increase in the proportion of tumors with Gleason score <= 6. Relatively large geographical differences in the median age at diagnosis and the age-standardized incidence of cases with category T1c tumors were observed. Treatment with curative intent increased dramatically and treatment patterns varied according to geographical region. In men with localized tumors and a PSA level of <20 ng/ml at diagnosis, expectant treatment was more commonly used in those aged >= 75 years than in those aged <75 years. Also, the pattern of endocrine treatment varied in different parts of Sweden. Conclusions. All changes in the register seen over time are consistent with increased diagnostic activity, especially PSA testing, resulting in an increased number of cases with early disease, predominantly tumors in category T1c. The patterns of diagnosis and treatment of prostate cancer vary considerably in different parts of Sweden. The NPCR continues to be an important source for research, epidemiological surveillance of the incidence, diagnosis and treatment of prostate cancer.
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19.
  • Almqvist, Erik G., et al. (författare)
  • Factors influencing insulin sensitivity in patients with mild primary hyperparathyroidism before and after parathyroidectomy
  • 2012
  • Ingår i: Scandinavian Journal of Clinical & Laboratory Investigation. - Informa Healthcare. - 1502-7686. ; 72:2, s. 92-99
  • Tidskriftsartikel (refereegranskat)abstract
    • Objectives. Primary hyperparathyroidism (PHPT) is associated with cardiovascular disease. The aims of this study were to investigate lipid and glucose metabolism in mild PHPT, and to identify whether insulin sensitivity correlates with circulating levels of adiponectin, SHBG, and osteocalcin before and after parathyroidectomy (PTX). Materials and methods. Forty-five patients with PHPT were examined before and 1 year after PTX. Circulating levels of triglycerides, total cholesterol, HDL-cholesterol, insulin, glucose, adiponectin, SHBG, osteocalcin, and erythropoietin were measured. Results. At baseline, the mean serum levels of total cholesterol, LDL-cholesterol and triglycerides were above the upper reference limit or in the upper normal range, and insulin sensitivity was reduced as assessed using the HOMA index. One year after parathyroidectomy, serum lipids as well as HOMA index and erythropoietin were unchanged while adiponectin had increased (p < 0.05), and SHBG and osteocalcin had decreased (p < 0.05 and p < 0.0001, respectively). HOMA index correlated negatively with circulating levels of adiponectin, SHBG and osteocalcin. In multiple regression analysis SHBG was the most important predictor of insulin sensitivity, both pre- and postoperatively. Conclusion. Untreated mild PHPT is associated with a moderate derangement of lipid and glucose metabolism. As previously shown in population-based cohorts, insulin sensitivity is positively associated with circulating concentrations of adiponectin, SHBG and osteocalcin. One year after PTX, the mean level of adiponectin was increased, but the levels of SHBG and osteocalcin had decreased and the levels of serum lipids and the insulin sensitivity remained unchanged as compared with baseline.
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20.
  • Burgu, Berk, et al. (författare)
  • An unusual cause of infantile gynecomastia: sertoli cell tumor.
  • 2011
  • Ingår i: Journal of pediatric hematology/oncology. - 1536-3678. ; 33:3, s. 238-40
  • Tidskriftsartikel (refereegranskat)abstract
    • Prepubertal testicular masses are relatively rare. Sertoli cell tumors account for 2% of prepubertal testicular tumors and very few have occurred in the first decade of life. Gynecomastia can be seen in approximately 5% of patients with testicular mass. We present an 8-month-old boy admitted with bilateral gynecomastia and unilateral testicular mass.
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