| 1. |
|
|
| 2. |
- Aleksic, J., et al.
(författare)
-
Discovery of VHE gamma-rays from the blazar 1ES 1215+303 with the MAGIC telescopes and simultaneous multi-wavelength observations
- 2012
-
Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 544, s. A142-
-
Tidskriftsartikel (refereegranskat)abstract
- Context. We present the discovery of very high energy (VHE, E > 100 GeV) gamma-ray emission from the BL Lac object 1ES 1215+303 by the MAGIC telescopes and simultaneous multi-wavelength data in a broad energy range from radio to gamma-rays. Aims. We study the VHE gamma-ray emission from 1ES 1215+303 and its relation to the emissions in other wavelengths. Methods. Triggered by an optical outburst, MAGIC observed the source in 2011 January-February for 20.3 h. The target was monitored in the optical R-band by the KVA telescope that also performed optical polarization measurements. We triggered target of opportunity observations with the Swift satellite and obtained simultaneous and quasi-simultaneous data from the Fermi Large Area Telescope and from the Metsahovi radio telescope. We also present the analysis of older MAGIC data taken in 2010. Results. The MAGIC observations of 1ES 1215+303 carried out in 2011 January-February resulted in the first detection of the source at VHE with a statistical significance of 9.4 sigma. Simultaneously, the source was observed in a high optical and X-ray state. In 2010 the source was observed in a lower state in optical, X-ray, and VHE, while the GeV gamma-ray flux and the radio flux were comparable in 2010 and 2011. The spectral energy distribution obtained with the 2011 data can be modeled with a simple one zone SSC model, but it requires extreme values for the Doppler factor or the electron energy distribution.
|
|
| 3. |
- Jarvela, IY, et al.
(författare)
-
Characterization of normal and polycystic ovaries using three-dimensional power Doppler ultrasonography
- 2002
-
Ingår i: Journal of Assisted Reproduction and Genetics. - 1058-0468. ; 19:12, s. 582-590
-
Tidskriftsartikel (refereegranskat)abstract
- Purpose: To evaluate the characteristics of polycystic compared to normal ovaries using three-dimensional (3-D) power Doppler ultrasonography. Methods: We recruited 42 volunteers, all of whom were commencing IVF treatment. Each patient was examined in the cycle preceeding the start of drug therapy during the late follicular phase. IF eight or more subcapsular follicles of 2-8 mm in diameter in one two-dimensional (2-D) plane were detected in either of the ovaries, the patient was categorized as having polycystic ovaries (PCO); otherwise the ovaries were considered normal. The parameters examined were volume of the ovary, vascularization index (VI), flow index (FI), vascularization flow index (VFI), and mean greyness (MG). IN addition, the ovary was arbitrarily divided into cortex and stroma, and thereafter volume, VI, FI, VFI, and MG were calculated for these two regions. Results: Twenty-eight women had normal ovaries and 14 had PCO. The comparison between normal and PCO showed that as a group the PCO were larger, without any differences in VI, FI, VFI, or MG. In patients with PCO, the right ovary was larger than the left one. In patients with normal ovaries, FI was higher on the left side. Division into cortex and stroma revealed that there were no differences in cortical or stroma VI, FI, VFI, or MG between normal and PCO on either side. Conclusions: The ovaries defined as polycystic were larger than normal ovaries, but there was no difference in the echogenicity of the stroma between polycystic and normal ovaries. We were also unable to demonstrate that the polycystic ovarian stroma was more vascularized than the stroma in the normal ovaries.
|
|
| 4. |
- Jarvela, IY, et al.
(författare)
-
Evaluation of endometrial receptivity during in-vitro fertilization using three-dimensional power Doppler ultrasound
- 2005
-
Ingår i: Ultrasound in Obstetrics & Gynecology. - : Wiley. - 1469-0705 .- 0960-7692. ; 26:7, s. 765-769
-
Tidskriftsartikel (refereegranskat)abstract
- Objective To compare sonographic endometrial characteristics in in-vitro fertilization (IVF) cycles between women who conceive and those who do not. Methods Thirty-five women undergoing IVF treatment participated in the study. Using three-dimensional (3D) power Doppler ultrasound, we assessed endometrial patterns, volume and vascularization, after follicle stimulating hormone (FSH) stimulation but before human chorionic gonadotropin (bCG) administration (referred to hereafter as 'after FSH stimulation) and again on the day of oocyte retrieval. Results The pregnancy rate was 37% (13/35). After FSH stimulation, 29 of the 35 women bad a triple-line endometrial pattern, compared with five out of 35 on the day of oocyte retrieval. in those who bad a triple-line pattern after FSH stimulation the pregnancy rate was 44.8% (13/29) and it was 0% (016) in those with a homogeneous pattern (chi-square test, P = 0.039). If a triple-line pattern was present on the day of oocyte retrieval the pregnancy rate was 80.0% (415), whereas if the pattern was homogeneous the pregnancy rate was 30.0% (9/30) (P = 0.032). There were no differences between those who conceived and those who did not in endometrial thickness, volume or vascularization on either day examined. Endometrial volume decreased significantly after bCG injection in women who conceived, but not in those who did not conceive. In both groups endometrial and subendometrial vascularization decreased after bCG injection, while the endometrial thickness remained unchanged. Conclusions The existence of a homogeneous endometrial pattern after FSH stimulation seems to be a prognostic sign of an adverse outcome in IVF, while a triple-line pattern after FSH stimulation and a decrease in endometrial volume appear to be associated with conception.
|
|
| 5. |
- Jarvela, IY, et al.
(författare)
-
Quantification of ovarian power Doppler signal with three-dimensional ultrasonography to predict response during in vitro fertilization
- 2003
-
Ingår i: Obstetrics and Gynecology. - 1873-233X. ; 102:4, s. 816-822
-
Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: To evaluate whether power Doppler predicts ovarian response to gonadotrophin stimulation during in vitro fertilization (IVF). METHODS: Forty-five women were divided into low-reserve (n = 12) and normal-reserve (n = 33) ovarian groups, according to antral follicle count. Transvaginal three-dimensional power Doppler ultrasonographic examinations were performed after pituitary downregulation and after gonadotrophin stimulation. The antral follicle count, ovarian volume, vascularization index, flow index, vascularization flow index, and mean gray value were measured and related to the number of oocytes retrieved and the pregnancy rate. RESULTS: The number of oocytes retrieved correlated with the antral follicle count (R = .4581, P = .004) and ovarian volume (R = .389, P < .016) but not with vascularization index, flow index, vascularization flow index, or mean gray value after pituitary suppression. There was an increase in vascularization index (P < .017), flow index (P < .001), and vascularization flow index (P < .007) during gonadotrophin stimulation in the normal-ovary group but not in the low-ovarian-reserve group. CONCLUSION: According to our results, quantification of power Doppler signal in the ovaries after pituitary suppression does not provide any additional information to predict the subsequent response to gonadotrophin stimulation during IVY The increase in ovarian power Doppler signal during gonadotrophin stimulation is related to the antral follicle count observed after pituitary suppression.
|
|
| 6. |
- Kuokkanen, M, et al.
(författare)
-
Lactase persistence and ovarian carcinoma risk in Finland, Poland and Sweden
- 2005
-
Ingår i: International Journal of Cancer. - : Wiley. - 0020-7136 .- 1097-0215. ; 117:1, s. 90-94
-
Tidskriftsartikel (refereegranskat)abstract
- Ovarian carcinoma is the fourth most common cause of cancer death in women. The cause and pathogenesis of this disease has remained obscure. Galactose, the hydrolyzing product of the milk sugar lactose, has been hypothesized to be toxic to ovarian epithelial cells and consumption of dairy products and lactase persistence has been suggested to be a risk factor for ovarian carcinoma. In adults, downregulation of lactase depends on a variant C/T-13910 at the 5' end of the lactase gene. To explore whether lactase persistence is related to the risk of ovarian carcinoma we determined the C/T-13910 genotype in a cohort of 782 women with ovarian carcinoma. The C/T-13910 genotype was defined by solid phase minisequencing from 327 Finnish, 303 Polish, 152 Swedish patients and 938 Finnish, 296 Polish and 97 Swedish healthy individuals served as controls. Lactase persistence did not associate significantly with increased risk for ovarian carcinoma in the Finnish odds ratio (OR = 0.77, 95% confidence interval [CI] = 0.57-1.05, p = 0.097), in the Polish (OR = 0.95, 95% Cl = 0.68-1.33, p = 0.75), or in the Swedish populations (OR = 1.63, 95% Cl = 0.65-4.08, p = 0.29). Our results do not support the hypothesis that lactase persistence increases the ovarian carcinoma risk. On the contrary, lactase persistence may decrease the ovarian carcinoma risk at least in the Finnish population.
|
|
| 7. |
|
|
| 8. |
- Mennander, A., et al.
(författare)
-
The significance of bicuspid aortic valve after surgery for acute type A aortic dissection
- 2020
-
Ingår i: Journal of Thoracic and Cardiovascular Surgery. - : Elsevier BV. - 0022-5223 .- 1097-685X. ; 159:3
-
Tidskriftsartikel (refereegranskat)abstract
- Objective: Decision-making concerning the extent of the repair of acute type A aortic dissection (ATAAD) includes functional and anatomical assessment of the aortic valve. We hypothesized that bicuspid aortic valve (BAV) does not impact outcome after surgery for ATAAD. We therefore evaluated the outcome after ATAAD surgery in relation to the presence of BAV, acute aortic regurgitation (AR), and surgical approach, using the Nordic Consortium for Acute Type A Aortic Dissection database. Methods: Eight participating Nordic centers collected data from 1122 patients undergoing ATAAD surgery during the years 2005 to 2014. Early complications, reoperations and survival were compared between patients with BAV and tricuspid aortic valves (TAV) before and after propensity score matching for sex, age, AR, organ malperfusion, hemodynamic instability, and site of the tear. Mean follow-up (range) for patients with TAV and BAV was 3.1 years (0-10.4 years) and 3.2 years (0-9.0 years), respectively. Results: Altogether, 65 (5.8%) of the patients had BAV. Root replacement was more frequently performed in the BAV as compared with the TAV group (60% vs 23%, P <.001). Survival, however, did not differ significantly between patients with BAV or TAV, either before (P =.230) or after propensity score-matching (P =.812). Even so, in cohort as a whole, patients presenting with AR had less favorable survival. Conclusions: Early and mid-term survival did not differ significantly between patients with BAV and TAV. © 2019 The American Association for Thoracic Surgery
|
|
| 9. |
- Pan, E., et al.
(författare)
-
Low rate of reoperations after acute type A aortic dissection repair from The Nordic Consortium Registry
- 2018
-
Ingår i: Journal of Thoracic and Cardiovascular Surgery. - : Elsevier BV. - 0022-5223 .- 1097-685X. ; 156:3, s. 939-948
-
Tidskriftsartikel (refereegranskat)abstract
- Objectives: To describe the relationship between the extent of primary aortic repair and the incidence of reoperations after surgery for type A aortic dissection. Methods: A retrospective cohort of 1159 patients treated for type A aortic dissection at eight Nordic low-to medium-sized cardiothoracic centers from 2005 to 2014. Data were gathered from patient records and national registries. Patients were separately divided into 3 groups according to the distal anastomoses technique (ascending aorta [n = 791], hemiarch [n = 247], and total arch [n = 66]), and into 2 groups for proximal repair (aortic root replacement [n = 285] and supracoronary repair [n = 832]). Freedom from reoperation was estimated with cumulative incidence survival and Fine-Gray competing risk regression model was used to identify independent risk factors for reoperation. Results: The median follow-up was 2.7 years (range, 0-10 years). Altogether 51 out of 911 patients underwent reoperation. Freedom from distal reoperation at 5 years was 96.9%, with no significant difference between the groups (P = .22). Freedom from proximal reoperation at 5 years was 97.8%, with no difference between the groups (P = .84). Neither DeBakey classification nor the extent of proximal or distal repair predicted freedom from a later reoperation. The only independent risk factor associated with a later proximal reoperation was a history of connective tissue disease. Conclusions: Type A aortic dissection repair in low-to medium-volume centers was associated with a low reoperation rate and satisfactory midterm survival. The extent of the primary repair had no significant influence on reoperation rate or midterm survival.
|
|
| 10. |
|
|
