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Sökning: WFRF:(Mäenpää J.)

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  • Watts, Eleanor L., et al. (författare)
  • Circulating sex hormones in relation to anthropometric, sociodemographic and behavioural factors in an international dataset of 12,300 men
  • 2017
  • Ingår i: PLOS ONE. - 1932-6203. ; 12:12
  • Tidskriftsartikel (refereegranskat)abstract
    • Introduction: Sex hormones have been implicated in the etiology of a number of diseases. To better understand disease etiology and the mechanisms of disease-risk factor associations, this analysis aimed to investigate the associations of anthropometric, sociodemographic and behavioural factors with a range of circulating sex hormones and sex hormone-binding globulin.Methods: Statistical analyses of individual participant data from 12,330 male controls aged 25–85 years from 25 studies involved in the Endogenous Hormones Nutritional Biomarkers and Prostate Cancer Collaborative Group. Analysis of variance was used to estimate geometric means adjusted for study and relevant covariates.Results: Older age was associated with higher concentrations of sex hormone-binding globulin and dihydrotestosterone and lower concentrations of dehydroepiandrosterone sulfate, free testosterone, androstenedione, androstanediol glucuronide and free estradiol. Higher body mass index was associated with higher concentrations of free estradiol, androstanediol glucuronide, estradiol and estrone and lower concentrations of dihydrotestosterone, testosterone, sex hormone-binding globulin, free testosterone, androstenedione and dehydroepiandrosterone sulfate. Taller height was associated with lower concentrations of androstenedione, testosterone, free testosterone and sex hormone-binding globulin and higher concentrations of androstanediol glucuronide. Current smoking was associated with higher concentrations of androstenedione, sex hormone-binding globulin and testosterone. Alcohol consumption was associated with higher concentrations of dehydroepiandrosterone sulfate, androstenedione and androstanediol glucuronide. East Asians had lower concentrations of androstanediol glucuronide and African Americans had higher concentrations of estrogens. Education and marital status were modestly associated with a small number of hormones.Conclusion: Circulating sex hormones in men are strongly associated with age and body mass index, and to a lesser extent with smoking status and alcohol consumption.
  • Falconer, Henrik, et al. (författare)
  • Robot-assisted approach to cervical cancer (RACC) : An international multi-center, open-label randomized controlled trial
  • 2019
  • Ingår i: International Journal of Gynecological Cancer. - : Wiley-Blackwell. - 1048-891X .- 1525-1438. ; 29:6, s. 1072-1076
  • Tidskriftsartikel (refereegranskat)abstract
    • Background Radical hysterectomy with pelvic lymphadenectomy represents the standard treatment for early-stage cervical cancer. Results from a recent randomized controlled trial demonstrate that minimally invasive surgery is inferior to laparotomy with regards to disease-free and overall survival. Primary Objective To investigate the oncologic safety of robot-assisted surgery for early-stage cervical cancer as compared with standard laparotomy. Study Hypothesis Robot-assisted laparoscopic radical hysterectomy is non-inferior to laparotomy in regards to recurrence-free survival with the advantage of fewer post-operative complications and superior patient-reported outcomes. Trial Design Prospective, multi-institutional, international, open-label randomized clinical trial. Consecutive women with early-stage cervical cancer will be assessed for eligibility and subsequently randomized 1:1 to either robot-assisted laparoscopic surgery or laparotomy. Institutional review board approval will be required from all participating institutions. The trial is coordinated from Karolinska University Hospital, Sweden. Major Inclusion/Exclusion Criteria Women over 18 with cervical cancer FIGO (2018) stages IB1, IB2, and IIA1 squamous, adenocarcinoma, or adenosquamous will be included. Women are not eligible if they have evidence of metastatic disease, serious co-morbidity, or a secondary invasive neoplasm in the past 5 years. Primary Endpoint Recurrence-free survival at 5 years between women who underwent robot-assisted laparoscopic surgery versus laparotomy for early-stage cervical cancer. Sample Size The clinical non-inferiority margin in this study is defined as a 5-year recurrence-free survival not worsened by >7.5%. With an expected recurrence-free survival of 85%, the study needs to observe 127 events with a one-sided level of significance (α) of 5% and a power (1-β) of 80%. With 5 years of recruitment and 3 years of follow-up, the necessary number of events will be reached if the study can recruit a total of 768 patients. Estimated Dates for Completing Accrual and Presenting Results Trial launch is estimated to be May 2019 and the trial is estimated to close in May 2027 with presentation of data shortly thereafter. Trial Registration The trial is registered at ClinicalTrials.gov (NCT03719547).
  • Clamp, A. R., et al. (författare)
  • SCOTROC 2B : feasibility of carboplatin followed by docetaxel or docetaxel-irinotecan as first-line therapy for ovarian cancer
  • 2006
  • Ingår i: British Journal of Cancer. - 0007-0920 .- 1532-1827. ; 94:1, s. 55-61
  • Tidskriftsartikel (refereegranskat)abstract
    • The feasibility of combination irinotecan, carboplatin and docetaxel chemotherapy as first-line treatment for advanced epithelial ovarian carcinoma was assessed. One hundred patients were randomised to receive four 3-weekly cycles of carboplatin (area under the curve (AUC) 7) followed by four 3-weekly cycles of docetaxel 100 mg m(-2) (arm A, n=51) or docetaxel 60 mg m(-2) with irinotecan 200 mg m(-2) (arm B, n=49). Neither arm met the formal feasibility criterion of an eight-cycle treatment completion rate that was statistically greater than 60% (arm A 71% (90% confidence interval (CI) 58-81%; P=0.079; arm B 67% (90% CI 55-78%; P=0.184)). Median-dose intensities were >85% of planned dose for all agents. In arms A and B, 15.6 and 12.2% of patients, respectively, withdrew owing to treatment-related toxicity. Grade 3-4 sensory neurotoxicity was more common in arm A (1.9 vs 0%) and grade 3-4 diarrhoea was more common in arm B (0.6 vs 3.5%). Of patients with radiologically evaluable disease at baseline, 50 and 48% responded to therapy in arms A and B, respectively; at median 17.1 months' follow-up, median progression-free survival was 17.1 and 15.9 months, respectively. Although both arms just failed to meet the formal statistical feasibility criteria, the observed completion rates of around 70% were reasonable. The addition of irinotecan to first-line carboplatin and docetaxel chemotherapy was generally well tolerated although associated with increased gastrointestinal toxicity. Further exploratory studies of topoisomerase-I inhibitors in this setting may be warranted.
  • Aramo-Immonen, Heli, 1964-, et al. (författare)
  • Trust-related network collaboration : difficulties, potential and paradoxes
  • 2010
  • Rapport (övrigt vetenskapligt)abstract
    • Tämä tutkimus on esiselvitys suomalaisen meriteollisuuden verkostotoiminnan tilasta. Tutkimuksen tavoitteena oli selvittää, mitä aihealueita meriklusterin verkoston toiminnassa kannattaisi jatkotutkia.Tutkimuksen aikana suoritettiin kaksi kohdennettua kyselytutkimusta meriklusterin verkoston toimijoille. Kyselyt lähetettiin 392:en sähköpostiosoitteeseen vuoden 2009 lopulla ja kakkosvaiheessa vuoden 2010 alkupuolella. Vastausprosentti tutkimuskyselyyn oli 12 %. Tutkimuksen suunnitteli ja tutkimuskysymykset laati Tampereen teknillisen yliopiston tuotantotalouden sekä tiedonhallinnan ja logistiikan laitoksen yhteinen tutkimusryhmä. Yoso Oy avusti kyselyn laatimisessa ja kyselytutkimuksen tulosten analysoinnissa. Kysely toteutettiin Yoso Oy:n Internet-pohjaisella kyselytyökalulla.Tutkimuksessa löytyi useita tutkimuksen kannalta mielenkiintoisia osa-alueita koskien verkoston toimintaa. Tässä raportissa julkaistaan tutkimuksen tulokset ja raportin lopussa pohditaan johtopäätöksiä tuloksista. Yleisesti voidaan todeta, että meriklusterin verkoston toiminta on suomalaisen meriteollisuuden kilpailukyvyn näkökulmasta avainasemassa. Verkoston kilpailukykyyn vaikuttavia havaittuja potentiaalisia tutkimusalueita ovat mm. miten verkostossa synnytetään ja vaalitaan kilpailukykyä edistäviä innovaatioita (liiketoiminta- sekä teknologiainnovaatiot), miten arvontuotossa ilmeneviä ongelmia verkostossa kommunikoidaan sekä esim. kilpailukykyisen toiminnan vaatiman integraation aste verkostossa. Verkoston tehokkuuteen ja tuottavuuteen vaikuttavia tutkimuksen arvoisia tekijöitä havaittiin olevan mm. toimintojen kypsyys, horisontaalinen ja vertikaalinen dynamiikka verkostossa sekä arvonmuodostuksen mekanismit. Tulevaisuuteen tähtäävän globaalin verkottuneen toiminnan näkökulmasta tutkimisen arvoista olisi mm. luottamuksen synnyttäminen virtuaalisessa verkostossa (toimijat ovat maantieteellisesti ja kulttuurisesti etäällä toisistaan), verkostotoiminnan kypsyys pk-sektorilla sekä arvontuottokyvykkyys verkoston välityksellä.
  • Uusitalo, H., et al. (författare)
  • Improved systemic safety and risk-benefit ratio of topical 0.1% timolol hydrogel compared with 0.5% timolol aqueous solution in the treatment of glaucoma
  • 2006
  • Ingår i: Graefe's Archives for Clinical and Experimental Ophthalmology. - 0721-832X .- 1435-702X. ; 244:11, s. 1491-1496
  • Tidskriftsartikel (refereegranskat)abstract
    • The purpose of the study was to compare the systemic safety and risk-benefit ratio of 0.1% timolol hydrogel and 0.5% aqueous timolol eye drops in the treatment of glaucoma. An 8-week randomised, double-blind, cross-over, multicentre study. A total of 25 patients with primary open-angle glaucoma, exfoliation glaucoma, or ocular hypertension was enrolled. After completing a wash-out period, patients were randomly chosen to receive either 0.1% timolol hydrogel once daily or 0.5% aqueous timolol eye drops twice daily. Intraocular pressure and heart rate during rest and exercise, head-up tilt test results, spirometry readings, and plasma concentrations of timolol were recorded. The risk-benefit ratio was determined by calculating the ratio between several heart rate endpoints and the change in intraocular pressure (IOP). The mean drug-induced change in the peak heart rate during exercise was -13.5 beats/min (SD 7.6) in the 0.5% aqueous timolol group and -5.1 beats/min (SD 6.7) in the 0.1% timolol hydrogel group (P < 0.001; 95% CI 4.06-12.18). There was no significant difference in the IOP-reducing efficacy between these compounds. The risk-benefit ratio was significantly improved when 0.1% timolol hydrogel was used, compared with 0.5% aqueous timolol in the exercise test. In the head-up tilt test the risk-benefit ratio was significantly improved at rest (P < 0.05), at 1 min (P < 0.05) and at 5 min (P < 0.001) after patients had received 0.1% timolol hydrogel. There were, however, no differences in spirometry readings. After patients had been treated with 0.1% timolol hydrogel, plasma concentrations of timolol were 1/6 (at peak) and 1/50 (at trough) of those of 0.5% aqueous timolol. Drug-induced changes in the peak heart rate, and head-up tilt test results as well as plasma concentrations of timolol, were significantly more pronounced after treatment with 0.5% aqueous timolol than with 0.1% timolol hydrogel. Because of the statistically similar IOP-reducing efficacy of these formulations the risk-benefit ratio was significantly improved when patients used 0.1% timolol hydrogel instead of 0.5% aqueous timolol.
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