60 research outputs found
Survival and growth patterns among new technology-based firms: Empirical study of cohort 2006 in Sweden
This is the author accepted manuscript. The final version is available from the publisher via the DOI in this recordThis study investigates the survival and growth trends in a cohort of new technologyâbased firms (NTBFs) established in Sweden in 2006. This cohort has faced both an economic upswing and a severe downturn, which started in 2008, and by 2014 provides 8 years of historical records. Our study makes several contributions to the current understanding of NTBF survival and growth. First, our empirical observations show that many NTBFs (72 percent) from the 2006 cohort were still operating at the end of 2014, indicating a much higher survival rate than those found in previous studies. Second, surviving firms from the 2006 cohort positively affected employment, as their annual job creation was higher than the reduction in employment caused by exiting firms. Third, very few companies experienced highâgrowth during their first 7 years, and employment growth and sales growth were highly correlated among highâgrowth firms
Detecting disease associated biomarkers by luminescence modulating phages
Assessment of risk for a given disease and the diagnosis of diseases is often based on assays detecting biomarkers. Antibody-based biomarker-assays for diseases such as prostate cancer are often ambiguous and biomarker proteins are frequently also elevated for reasons that are unspecific. We have opted to use luminescence modulating phages for the analysis of known acute inflammatory response biomarker CRP (C-reactive protein) and biomarkers of prostate cancer in urine samples. Firstly, CRP was used to simulate the detection process in a controlled chemical environment. Secondly, we tried to classify more challenging lethal prostate cancer samples from control samples. Our unique method utilizes a special biopanning process in order to create special phages capable of capturing a dye necessary for detection and potential biomarkers. As the biomarker-molecules interfere with the phages, dye is repelled from the phage network resulting in an altered reporter luminescence. These changes can be observed with an absorbance reader and even with the naked eye. The simple method could present an alternative for screening of disease biomarkers. For prostate cancer urine samples, we achieved a sensitivity of 80% and specificity of 75% to detect Grade Group (GG) 4 and 5 prostate cancer.Peer reviewe
Detecting disease associated biomarkers by luminescence modulating phages
Assessment of risk for a given disease and the diagnosis of diseases is often based on assays detecting biomarkers. Antibody-based biomarker-assays for diseases such as prostate cancer are often ambiguous and biomarker proteins are frequently also elevated for reasons that are unspecific. We have opted to use luminescence modulating phages for the analysis of known acute inflammatory response biomarker CRP (C-reactive protein) and biomarkers of prostate cancer in urine samples. Firstly, CRP was used to simulate the detection process in a controlled chemical environment. Secondly, we tried to classify more challenging lethal prostate cancer samples from control samples. Our unique method utilizes a special biopanning process in order to create special phages capable of capturing a dye necessary for detection and potential biomarkers. As the biomarker-molecules interfere with the phages, dye is repelled from the phage network resulting in an altered reporter luminescence. These changes can be observed with an absorbance reader and even with the naked eye. The simple method could present an alternative for screening of disease biomarkers. For prostate cancer urine samples, we achieved a sensitivity of 80% and specificity of 75% to detect Grade Group (GG) 4 and 5 prostate cancer
Predictors of long-term change in adult cognitive performance: systematic review and data from the Northern Finland Birth Cohort 1966
Objective: Several social life events and challenges have an impact on cognitive development. Our goal was to analyze the predictors of change in cognitive performance in early midlife in a general population sample. Additionally, systematic literature review was performed. Method: The study sample was drawn from the Northern Finland Birth Cohort 1966 at the ages of 34 and 43 years. Primary school performance, sociodemographic factors and body mass index (BMI) were used to predict change in cognitive performance measured by the California Verbal Learning Test, Visual Object Learning Test, and Abstraction Inhibition and Working Memory task. Analyses were weighted by gender and education, and p-values were corrected for multiple comparisons using BenjaminiâHochberg procedure (BâH). Results: Male gender predicted decrease in episodic memory. Poor school marks of practical subjects, having no children, and increase in BMI were associated with decrease in episodic memory, though non-significantly after BâH. Better school marks, and higher occupational class were associated with preserved performance in visual object learning. Higher vocational education predicted preserved performance in visual object learning test, though non-significantly after B-H. Likewise, having children predicted decreased performance in executive functioning but non-significantly after B-H. Conclusions: Adolescent cognitive ability, change in BMI and several sociodemographic factors appear to predict cognitive changes in early midlife. The key advantage of present study is the exploration of possible predictors of change in cognitive performance among general population in the early midlife, a developmental period that has been earlier overlooked
Combined Surgical Treatment for Chronic Upper Extremity Lymphedema Patients Simultaneous Lymph Node Transfer and Liposuction
Background Upper limb lymphedema is a common problem after axillary lymph node dissection. Lymphatic drainage can be improved by microvascular lymph node transfer, whereas liposuction can be used to reduce arm volume and excess of adipose tissue. We present the results of chronic lymphedema patients who have undergone lymph node transfer and liposuction simultaneously in 1 operation and compare the results with patients who have undergone lymph node transfer without liposuction. Methods During May 2007 to February 2015, 20 postmastectomy patients and 1 Hodgkin's lymphoma patient presenting with chronic nonpitting lymphedema (age between 37 and 74 years, average 56.7 years) were operated using the combined technique and 27 postmastectomy patients presenting with early-stage lymphedema (age between 31 and 68 years, average age 50.2 years) were operated using only the lymph node transfer. Compression therapy was started immediately after the operation and the patients used compression 24 h/d at least 6 months postoperatively. Changes in clinical parameters (number of erysipelas infections, pain), arm volume, transport indexes calculated form lymphoscintigraphy images, and daily usage of compression garments were compared preoperatively and postoperatively and between groups (combined technique vs lymph node transfer). The study was a retrospective observational study. Results In the combined technique group, the average arm volume excess decreased postoperatively 87.7%, and in 7 of 10 patients, the edema volume did not increase even without compression. Seventeen of 21 patients were able to reduce the use of compression garment. Lymphoscintigraphy results were improved in 12 of 15 patients and the improvement was significantly greater in the combined technique group than in the lymph node transfer group (P = 0.01). The number of erysipelas infections was decreased in 7 of 10 patients and the decrease was significantly greater in the combined technique group than in the lymph node transfer group (P = 0.02). In the lymph node transfer group, the average excess volume decreased postoperatively 27.5%. Fourteen of 27 patients were able to reduce the use of compression garments. Lymphoscintigraphy results were improved in 8 of 19 patients, and the number of erysipelas infections was decreased in 1 of 3 patients. Conclusions Liposuction can safely be performed with lymph node transfer in 1 operation to achieve optimal results in patients with chronic lymphedema. The combined technique provides immediate volume reduction and further regenerative effects on the lymphatic circulation. The significantly greater reduction in lymphoscintigraphy values and erysipelas infections suggests that the combined technique might be better for late-stage lymphedema patients than lymph node transfer alone
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Active surveillance for prostate cancer: a narrative review of clinical guidelines
In the past decade active surveillance (AS) of men with localized prostate cancer has become an increasingly popular management option, and a range of clinical guidelines have been published on this topic. Existing guidelines regarding AS for prostate cancer vary widely, but predominantly state that the most suitable patients for AS are those with pretreatment clinical stage T1c or T2 tumours, serum PSA levels <10 ng/ml, biopsy Gleason scores of 6 or less, a maximum of one or two tumour-positive biopsy core samples and/or a maximum of 50% of cancer per core sample. Following initiation of an AS programme, most guidelines recommend serial serum PSA measurements, digital rectal examinations and surveillance biopsies to check for and identify pathological indications of tumour progression. Definitions of disease reclassification and progression differ among guidelines and multiple criteria for initiation of definitive treatment are proposed. The variety of descriptions of criteria for clinically insignificant prostate cancer indicates a lack of consensus on optimal AS and intervention thresholds. A single set of guidelines are needed in order to reduce variations in clinical practice and to optimize clinical decision-making. To enable truly evidence-based guidelines, further research that combines existing evidence, while also gathering information from more long-term studies is needed.This study is linked to a larger project, the Movember Foundation's Global Action Plan on active surveillance for low-risk prostate cancer (GAP3), which is collaboration between institutions, hospitals and research centres in Australia, Canada, France, Finland, Italy, Japan, Netherlands, UK and the USA. The Movember Foundation has invested âŹ1,664,950 in the GAP3 project in order to create the largest centralized database on AS in men with prostate cancer to date, comprising around 40% of all global patient data on AS. The funder did not play any role in the study design, collection, analysis or interpretation of data, or in the drafting of this paper
The Movember Foundation's GAP3 cohort : a profile of the largest global prostate cancer active surveillance database to date
Objectives: The Movember Foundation launched the Global Action Plan Prostate Cancer Active Surveillance (GAP3) initiative to create a global consensus on the selection and monitoring of men with low-risk prostate cancer (PCa) on active surveillance (AS). The aim of this study is to present data on inclusion and follow-up for AS in this unique global AS database. Patients and Methods: Between 2014 and 2016, the database was created by combining patient data from 25 established AS cohorts worldwide (USA, Canada, Australasia, UK and Europe). Data on a total of 15 101 patients were included. Descriptive statistics were used to report patients' clinical and demographic characteristics at the time of PCa diagnosis, clinical follow-up, discontinuation of AS and subsequent treatment. Cumulative incidence curves were used to report discontinuation rates over time. Results: At diagnosis, the median (interquartile range [IQR]) patient age was 65 (60\u201370) years and the median prostate-specific antigen level was 5.4 (4.0\u20137.3) ng/mL. Most patients had clinical stage T1 disease (71.8%), a biopsy Gleason score of 6 (88.8%) and one tumour-positive biopsy core (60.3%). Patients on AS had a median follow-up time of 2.2 (1.0\u20135.0) years. After 5, 10 and 15 years of follow-up, respectively, 58%, 39% and 23% of patients were still on AS. The current version of GAP3 has limited data on magnetic resonance imaging (MRI), quality of life and genomic testing. Conclusions: GAP3 is the largest worldwide collaboration integrating patient data from men with PCa on AS. The results will allow individual patients and clinicians to have greater confidence in the personalized decision to either delay or proceed with active treatment. Longer follow-up and the evaluation of MRI, new genomic markers and patient-related outcomes will result in even more valuable data and eventually in better patient outcomes
The Movember Foundation's GAP3 cohort: a profile of the largest global prostate cancer active surveillance database to date
OBJECTIVES:
The Movember Foundation launched the Global Action Plan Prostate Cancer Active Surveillance (GAP3) initiative to create a global consensus on the selection and monitoring of men with lowârisk prostate cancer (PCa) on active surveillance (AS). The aim of this study is to present data on inclusion and followâup for AS in this unique global AS database.
PATIENTS AND METHODS:
Between 2014 and 2016, the database was created by combining patient data from 25 established AS cohorts worldwide (USA, Canada, Australasia, UK and Europe). Data on a total of 15 101 patients were included. Descriptive statistics were used to report patients' clinical and demographic characteristics at the time of PCa diagnosis, clinical followâup, discontinuation of AS and subsequent treatment. Cumulative incidence curves were used to report discontinuation rates over time.
RESULTS:
At diagnosis, the median (interquartile range [IQR]) patient age was 65 (60â70) years and the median prostateâspecific antigen level was 5.4 (4.0â7.3) ng/mL. Most patients had clinical stage T1 disease (71.8%), a biopsy Gleason score of 6 (88.8%) and one tumourâpositive biopsy core (60.3%). Patients on AS had a median followâup time of 2.2 (1.0â5.0) years. After 5, 10 and 15 years of followâup, respectively, 58%, 39% and 23% of patients were still on AS. The current version of GAP3 has limited data on magnetic resonance imaging (MRI), quality of life and genomic testing.
CONCLUSIONS:
GAP3 is the largest worldwide collaboration integrating patient data from men with PCa on AS. The results will allow individual patients and clinicians to have greater confidence in the personalized decision to either delay or proceed with active treatment. Longer followâup and the evaluation of MRI, new genomic markers and patientârelated outcomes will result in even more valuable data and eventually in better patient outcomes
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