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High-resolution Compton spectroscopy using x-ray microcalorimeters. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2022; 93:113105. [PMID: 36461526 DOI: 10.1063/5.0092693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 10/23/2022] [Indexed: 06/17/2023]
Abstract
X-ray Compton spectroscopy is one of the few direct probes of the electron momentum distribution of bulk materials in ambient and operando environments. We report high-resolution inelastic x-ray scattering experiments with high momentum and energy transfer performed at a storage-ring-based high-energy x-ray light source facility using an x-ray transition-edge sensor (TES) microcalorimeter detector. The performance was compared with a silicon drift detector (SDD), an energy-resolving semiconductor detector, and Compton profiles were measured for lithium and cobalt oxide powders relevant to lithium-ion battery research. Spectroscopic analysis of the measured Compton profiles demonstrates the high-sensitivity to the low-Z elements and oxidation states. The line shape analysis of the measured Compton profiles in comparison with computed Hartree-Fock profiles is usually limited by the resolution of the semiconductor detector. We have characterized an x-ray TES microcalorimeter detector for high-resolution Compton scattering experiments using a bending magnet source at the Advanced Photon Source with a double crystal monochromator, providing monochromatic photon energies near 27.5 keV. The momentum resolution below 0.16 atomic units (a.u.) was measured, yielding an improvement of more than a factor of 7 over a state-of-the-art SDD for the same scattering geometry. Furthermore, the lineshapes of narrow valence and broad core electron profiles of sealed lithium metal were clearly resolved using an x-ray TES compared to smeared and broadened lineshapes observed when using the SDD. High-resolution Compton scattering using the energy-resolving area detector shown here presents new opportunities for spatial imaging of electron momentum distributions for a wide class of materials with applications ranging from electrochemistry to condensed matter physics.
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P-098 Male age does not affect sperm motility rate after thawing and laboratory outcomes of transnational oocyte donation programs. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Study question
Can outcomes of transnational egg donation treatments, which involves the shipping of cryopreserved partner semen, be affected by advanced paternal age?
Summary answer
Male age does not affect percentage of motile spermatozoa after thawing. Advanced paternal age does not affect IVF laboratory outcomes of transnational egg donation treatments
What is known already
Studies on advanced paternal age are limited and a clear definition of advanced paternal age is still missing. The separation between advanced paternal and maternal age effects is hampered by the collinearity of maternal age with paternal age, since older males are often associated with older women. Many studies have focused on egg donation treatments, to overcome this problem. However, these studies reported conflicting results, such as a putative effect of advanced paternal age on ICSI outcomes, while some others not. This study analyzes paternal age in transnational egg donation program, which involves the shipping of cryopreserved partner semen
Study design, size, duration
A multicentric retrospective cohort study involving 101 couples and 327 blastocysts was performed from June 2018 up to December 2021. Two Italian IVF centers involved a Spanish center to perform a transnational fresh oocyte donation program. The aim of the study was to analyze the putative effect of male age on (i) semen parameters, (ii) fertilization rate and (iii) blastocyst rate.
Participants/materials, setting, methods
Donations of both male and female gametes were excluded. We performed sperm cryopreservation of the male partner of the recruited couples. Frozen samples were shipped with a authorized courier, which certified the safety of the whole procedure. The day of donor’s egg retrieval, semen samples were thawed and ICSI was performed on fresh donated oocytes. Resulted blastocysts were vitrified and shipped to the centers where the frozen embryo transfers in the recipient patients were performed.
Main results and the role of chance
The mean of male partners age was 42.6 ± 6.5 (min 26- max 63). Overall fertilization rate was 81.6% (686/840), and blastocyst rate was 47.6% (327/686). Male age was analyzed as a continuous variable and divided into five groups calculated for 5-year intervals. No differences in terms of fertilization rates nor blastocysts rates were found (85.3% and 43.7% for <35-years; 84.7% and 54.0% for 36-39-years; 79.7% and 44.2% for 40-44-years; 89.6 and 48.1% for 45-49-years; 74.5% and 56.5 for >50-years). Although advanced paternal age has been correlated to the decrease of most of sperm parameters, in the present study we found that only progressive rapid motility was significantly affected by advanced paternal age (coefficient -0.261 , P = 0.009). To evaluate the predictive value of advanced paternal age and sperm parameters on fertilization and blastocysts formation, we performed a multiple linear regression analysis. We found that sperm parameters and male age in our sample are not predictive of the number of fertilized oocytes nor the number of obtained blastocysts. Importantly for the setting of the study, the percentage of progressive motile sperm at the thawing was not influenced by paternal age.
Limitations, reasons for caution
The main limitation of the study is the small sample size, which might mask the paternal age effect on the sperm parameters, as the volume, which tend to decrease in the classes of age, but did not reached the statistical significance. The multicentric nature of the study represent a strength
Wider implications of the findings
The discomfort for couples that need oocyte donation in countries where there is a low availability of egg donors is often underestimated. This study demonstrate that, independently of male age, the shipping of frozen sperm and the ICSI of freshly donated oocytes represent a valid option for these couples.
Trial registration number
not applicable
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The basal to total insulin ratio in outpatients with diabetes on basal-bolus regimen. J Diabetes Metab Disord 2019; 17:393-399. [PMID: 30918874 PMCID: PMC6405380 DOI: 10.1007/s40200-018-0358-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 09/24/2018] [Indexed: 12/28/2022]
Abstract
Objective To evaluate the basal/total ratio of daily insulin dose (b/T) in outpatients with diabetes type 1 (DM1) and type 2 (DM2) on basal-bolus regimen, by investigating whether there is a relationship with HbA1c and episodes of hypoglycemia. Methods Multicentric, observational, cross-sectional study in Italy. Adult DM1 (n = 476) and DM2 (n = 541) outpatients, with eGFR >30 mL/min/1.73 m2, on a basal-bolus regimen for at least six months, were recruited from 31 Italian Diabetes services between March and September 2016. Clinicaltrials.govID: NCT03489031. Results Total daily insulin dose was significantly higher in DM2 patients (52.3 ± 22.5 vs. 46 ± 20.9 U/day), but this difference disappeared when insulin doses were normalized for body weight. The b/T ratio was lower than 0.50 in both groups: 0.46 ± 0.14 in DM1 and 0.43 ± 0.15 in DM2 patients (p = 0.0011). The b/T was significantly higher in the patients taking metformin in both groups, and significantly different according to the type of basal insulin (Degludec, 0.48 in DM1 and 0.44 in DM2; Glargine, 0.44 in DM1 and 0.43 in DM2; Detemir, 0.45 in DM1 and 0.39 in DM2). The b/T ratio was not correlated in either group to HbA1c or incidence of hypoglycemia (<40 mg/dL, or requiring caregiver intervention, in the last three months). In the multivariate analysis, metformin use and age were independent predictors of the b/T ratio in both DM1 and DM2 patients, while the type of basal insulin was an independent predictor only in DM1. Conclusion The b/T ratio was independent of glycemic control and incidence of hypoglycemia.
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Correction to: The basal to total insulin ratio in outpatients with diabetes on basal-bolus regimen. J Diabetes Metab Disord 2018; 17:401-402. [PMID: 30919831 PMCID: PMC6405401 DOI: 10.1007/s40200-018-0370-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
[This corrects the article DOI: 10.1007/s40200-018-0358-2.].
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Corioangioma placentario gigante, polihidramnios y parto pretérmino. A propósito de un caso. CLINICA E INVESTIGACION EN GINECOLOGIA Y OBSTETRICIA 2018. [DOI: 10.1016/j.gine.2016.07.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ascitis fetal aislada idiopática. CLINICA E INVESTIGACION EN GINECOLOGIA Y OBSTETRICIA 2017. [DOI: 10.1016/j.gine.2016.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Grafting response to excess boron and expression analysis of genes coding boron transporters in tomato. PLANT BIOLOGY (STUTTGART, GERMANY) 2017; 19:728-735. [PMID: 28603945 DOI: 10.1111/plb.12589] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 06/06/2017] [Indexed: 06/07/2023]
Abstract
Boron (B) is essential for plant growth, however its excess in soil and/or in irrigation water can severely compromise plant growth and yield. The goal of this work was to determine whether grafting onto 'Arnold', a commercial interspecific hybrid (Solanum lycopersicum × S. habrochaites) rootstock, which in a previous study was found to be tolerant to salt stress, could improve tomato (S. lycopersicum L. 'Ikram') tolerance to excess B, and whether this effect is associated with an exclusion mechanism. Non-grafted, self-grafted and grafted plants were hydroponically grown in a greenhouse with B concentration in the nutrient solution of 0.27 (control), 5, 10 and 15 mg·l-1 . A transcription analysis was carried out on SlNIP5 and SlBOR1 genes, which encode putative B transporters. Grafting 'Ikram' onto 'Arnold' rootstock reduced B concentration in leaf tissue of plants exposed to B concentrations of 10-15 mg·l-1 . At high B levels, SlNIP5 was down-regulated in all grafting combinations, while SlBOR1 was down-regulated only in the roots of plants grafted onto 'Arnold'. We conclude that grafting the susceptible tomato cultivar 'Ikram' onto the commercial rootstock 'Arnold' improved tolerance to excess B by reducing expression of genes encoding for B transporters at the root level, thus partially reducing the root uptake of B and its accumulation in the shoot.
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Effect of Vibration on the Quality of Strawberry Fruits Caused by Simulated Transport. J FOOD PROCESS ENG 2015. [DOI: 10.1111/jfpe.12207] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Sutureless Aortic Valve Replacement in Complex Procedures: What Is the Benefit? Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1544288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Chemical composition and antioxidant activity ofPistacia lentiscusessential oil from Southern Italy (Apulia). JOURNAL OF ESSENTIAL OIL RESEARCH 2014. [DOI: 10.1080/10412905.2014.973614] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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258 * PREDICTORS OF PROLONGED INTENSIVE CARE UNIT STAY IN PATIENTS UNDERGOING MINIMALLY INVASIVE RIGHT THORACOTOMY VALVE SURGERY: A SINGLE INSTITUTION ANALYSIS WITH 2272 PATIENTS. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu276.258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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014 * RIGHT ANTERIOR MINI-THORACOTOMY FOR ISOLATED AORTIC VALVE REPLACEMENT: TEN-YEAR EXPERIENCE IN 484 PATIENTS. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu276.14] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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127 * ITALIAN MULTICENTRE STUDY FOR TYPE A ACUTE AORTIC DISSECTION: THIRTY-THREE-YEAR FOLLOW-UP. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu276.127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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302 * FULL STERNOTOMY VERSUS RIGHT ANTERIOR MINI-THORACOTOMY FOR ISOLATED AORTIC VALVE REPLACEMENT IN OCTOGENARIANS: A PROPENSITY MATCHED STUDY. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu276.302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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216 * UNTREATED MILD TO MODERATE TRICUSPID REGURGITATION IN DILATED CARDIOMYOPATHY PATIENTS SUBMITTED TO MITRAL REPAIR: WHAT HAPPENS AT LONG-TERM? Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu276.216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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092 * EARLY AND LONG-TERM OUTCOMES OF MINIMALLY INVASIVE MITRAL VALVE SURGERY THROUGH RIGHT MINI-THORACOTOMY: A TEN-YEAR EXPERIENCE IN 1604 PATIENTS. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu276.92] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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072-I * SUTURELESS AORTIC VALVE REPLACEMENT WITH A PERCEVAL S PROSTHESIS: THREE-YEAR SINGLE-CENTRE EXPERIENCE IN 390 PATIENTS. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu276.72] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Therapy side-effects and predictive factors for preterm delivery in patients undergoing tocolysis with atosiban or ritodrine for threatened preterm labour. J OBSTET GYNAECOL 2014; 34:684-9. [DOI: 10.3109/01443615.2014.930094] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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High ghrelin levels in post-treatment euthyroid patients with Hashimoto's thyroiditis: a case-control preliminary study. Exp Clin Endocrinol Diabetes 2014; 122:540-3. [PMID: 24918532 DOI: 10.1055/s-0034-1376965] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
RATIONALE Hashimoto's thyroiditis is a chronic inflammatory condition often associated with changes in appetite and body composition. Ghrelin is an orexigenic peptide involved in the regulation of appetite and food intake. A possible role of ghrelin in mediating inflammation has been suggested. A few contrasting published data are available on the relationship between thyroid status and circulating ghrelin in patients affected by Hashimoto's thyroiditis. The aim of the present case-control study was to provide additional evidence on the relationship between thyroid status and plasma ghrelin levels in post-treatment euthyroid female patients with Hashimoto's thyroiditis, compared to healthy controls. METHODS 25 women [age 46.6±10.6 years; Body Mass Index 26.3±3.8 kg/m²] affected by overt hypothyroidism due to Hashimoto's thyroiditis were studied after thyroid hormones and body weight were already normalized for at least 2 months following L-thyroxine replacement. 25 healthy women (age 40.2±6.4 years; Body Mass Index 26.2±4.0 kg/m²) served as the control group. Blood levels of thyroid hormones, thyroid peroxidase antibodies, thyroglobulin antibodies and ghrelin were determined. Fat mass, fat-free mass and high-density lipoprotein cholesterol were also assessed. RESULTS Circulating ghrelin levels were significantly higher in patients vs. control subjects (p<0.001). No differences were found in metabolic parameters (body mass index, fat mass, fat-free mass, high-density lipoprotein cholesterol) between groups. CONCLUSION The present study provides additional evidence of hyperghrelinemia status in post-treatment euthyroid patients affected by Hashimoto's thyroiditis.
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OP-265 Hybrid Treatment for Aortic Stenosis and CAD: Minimally Invasive Sutureless Aortic Valve Replacement and Delayed PCI. Am J Cardiol 2014. [DOI: 10.1016/j.amjcard.2014.01.167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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319 * MONITORING THE LEARNING CURVE AND QUALITY OF CARE DURING RE-ENGINEERING TOWARDS RIGHT MINITHORACOTOMY PERCEVAL S SUTURELESS BIOPROSTHESIS IMPLANTATION: A SINGLE-INSTITUTION EXPERIENCE WITH 135 PATIENTS. Interact Cardiovasc Thorac Surg 2013. [DOI: 10.1093/icvts/ivt372.319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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269 * PARAVALVULAR REGURGITATION AFTER TRANSCATHETER AORTIC VALVE IMPLANTATION IS A NON-PREDICTABLE COMPLICATION: A CUSUM ANALYSIS STUDY. Interact Cardiovasc Thorac Surg 2013. [DOI: 10.1093/icvts/ivt372.269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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012 * MITRAL VALVE ANNULOPLASTY VERSUS MITRAL VALVE REPLACEMENT FOR ISCHAEMIC MITRAL REGURGITATION: HAEMODYNAMIC AND FUNCTIONAL CAPACITY COMPARISON. Interact Cardiovasc Thorac Surg 2013. [DOI: 10.1093/icvts/ivt372.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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073 * ENHANCING QUALITY CONTROL AND PERFORMANCE MONITORING IN THORACIC AORTIC SURGERY: A TEN-YEAR SINGLE-INSTITUTION EXPERIENCE WITH 753 PROCEDURES. Interact Cardiovasc Thorac Surg 2013. [DOI: 10.1093/icvts/ivt372.73] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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318 * MINIMALLY INVASIVE AORTIC VALVE REPLACEMENT WITH THE PERCEVAL S SUTURELESS VALVE: EARLY OUTCOMES AND MID-TERM SURVIVAL FROM TWO EUROPEAN CENTRES. Interact Cardiovasc Thorac Surg 2013. [DOI: 10.1093/icvts/ivt372.318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Antegrade and retrograde arterial perfusion strategy in minimally invasive mitral-valve surgery: a propensity score analysis on 1280 patients. Eur J Cardiothorac Surg 2013; 43:e167-72. [DOI: 10.1093/ejcts/ezt043] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Design of a cluster randomized trial assessing integrated infectious diseases training and on-site support for midlevel practitioners in Uganda. ACTA ACUST UNITED AC 2012. [DOI: 10.1177/2040402613479342] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Biochemical, antioxidant and anti-inflammatory properties of pomegranate fruits growing in Southern Italy (Salento, Apulia). ACTA ALIMENTARIA 2012. [DOI: 10.1556/aalim.41.2012.2.6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Intraspecific variability of the essential oil of Calamintha nepeta subsp. nepeta from Southern Italy (Apulia). Nat Prod Res 2012; 27:331-9. [PMID: 22646908 DOI: 10.1080/14786419.2012.691495] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
The essential oil of 46 spontaneous plants of Calamintha nepeta (L.) Savi subsp. nepeta growing wild in Sud, Italy (Salento, Apulia), were investigated by GC/MS. Fifty-seven components were identified in the oil representing over the 98% of the total oil composition. Four chemotypes were identified: piperitone oxide, piperitenone oxide, piperitone-menthone and pulegone.
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Sutureless aortic valve implantation in minimally invasive aortic valve replacement: an innovative approach in high-risk patients. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Delayed dislocation of a sutureless aortic bioprosthesis: The first case. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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SU-E-I-177: Electric Field and Ionization Signal Simulation in Liquid Xenon Detectors for PET. Med Phys 2011. [DOI: 10.1118/1.3611751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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SU-C-211-06: High Resolution Pre-Clinical PET System Based on Liquid Xenon Gamma Ray Detectors. Med Phys 2011. [DOI: 10.1118/1.3611496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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SU-E-I-114: Simulations of Scintillation Events in a High-Resolution Liquid Xenon Micro-PET System. Med Phys 2011. [DOI: 10.1118/1.3611689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Biochemical characterization of a lipase from olive fruit (Olea europaea L.). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2010; 48:741-745. [PMID: 20708515 DOI: 10.1016/j.plaphy.2010.05.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2009] [Revised: 05/10/2010] [Accepted: 05/16/2010] [Indexed: 05/29/2023]
Abstract
Lipase (triacylglycerol acylhydrolase; EC 3.1.1.3) is the first enzyme of the degradation path of stored triacylglycerols (TAGs). In olive fruits, lipase may determine the increase of free fatty acids (FFAs) which level is an important index of virgin olive oil quality. However, despite the importance of virgin olive oil for nutrition and human health, few studies have been realized on lipase activity in Olea europaea fruits. In order to characterize olive lipase, fruits of the cv. Ogliarola, widely diffused in Salento area (Puglia, Italy), were harvested at four stages of ripening according to their skin colour (green, spotted I, spotted II, purple). Lipase activity was detected in the fatty layer obtained after centrifugation of the olive mesocarp homogenate. The enzyme exhibited a maximum activity at pH 5.0. The addition of calcium in the lipase assay medium leads to an increment of activity, whereas in the presence of copper the activity was reduced by 75%. Furthermore, mesocarp lipase activity increases during olive development but declined at maturity (purple stage). The data represent the first contribution to the biochemical characterization of an olive fruit lipase associated to oil bodies.
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Picosecond time-resolved laser pump/X-ray probe experiments using a gated single-photon-counting area detector. JOURNAL OF SYNCHROTRON RADIATION 2009; 16:387-390. [PMID: 19395803 DOI: 10.1107/s0909049509004658] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2008] [Accepted: 02/09/2009] [Indexed: 05/25/2023]
Abstract
The recent developments in X-ray detectors have opened new possibilities in the area of time-resolved pump/probe X-ray experiments; this article presents the novel use of a PILATUS detector to achieve X-ray pulse duration limited time-resolution at the Advanced Photon Source (APS), USA. The capability of the gated PILATUS detector to selectively detect the signal from a given X-ray pulse in 24 bunch mode at the APS storage ring is demonstrated. A test experiment performed on polycrystalline organic thin films of alpha-perylene illustrates the possibility of reaching an X-ray pulse duration limited time-resolution of 60 ps using the gated PILATUS detector. This is the first demonstration of X-ray pulse duration limited data recorded using an area detector without the use of a mechanical chopper array at the beamline.
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Prophylactic intra-aortic balloon pump in high-risk patients undergoing coronary artery bypass grafting: a propensity score analysis. Interact Cardiovasc Thorac Surg 2009; 9:291-4. [DOI: 10.1510/icvts.2008.196105] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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EFFECTS OF DIFFERENT ELECTRICAL CONDUCTIVITY LEVELS ON STRAWBERRY GROWN IN SOILLESS CULTURE. ACTA ACUST UNITED AC 2003. [DOI: 10.17660/actahortic.2003.609.53] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Abstract
The aims of this work were to determine the amounts of the different classes of phenolic compounds in an ethanolic extract from red grape marc and its components, peels and seeds, and to evaluate their antioxidant activities by the beta-carotene bleaching test for their utilization as natural antioxidants. The results showed that red grape marc was rich in polyphenol compounds with a clear antioxidant activity. The extracts, in fact, at very low concentration (20 ppm) in total phenols showed an antioxidant activity (AA) higher than 43% on average, while at higher concentration (80-160 ppm) all the fractions had an AA comparable to that of butlylated-hydroxytoluene. Grape seeds seemed to give the highest contribution to such AA, as they contained high quantities of proanthocyanidines, a type of flavonoid known for its high antioxidant properties.
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Detection of ICAM-1, ICAM-2, ICAM-3, PECAM-1 and VCAM-1, evaluation of hypercoagulable state and platelet aggregation in hemoglobinopathy patients with erythroblasts. Haematologica 2001; 86:778-9. [PMID: 11454542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023] Open
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Preincubation in peritoneal fluid decreases the follicular fluid-induced acrosomal reactivity of human spermatozoa. Andrologia 1997; 29:43-8. [PMID: 9049011 DOI: 10.1111/j.1439-0272.1997.tb03147.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
The aim of this study was to determine the effects of preincubation in peritoneal fluid on the follicular fluid-induced acrosomal reactivity of human spermatozoa in vitro. Thirty women participating in our IVF-ET program were given a GnRH-analogue, highly purified FSH and hCG in order to induce superovulation. Peritoneal and follicular fluids were aspirated during pick-up laparoscopy, centrifuged, filtered and frozen until use. An aliquot of swim-up suspension from normospermic semen specimens (n = 30) was incubated with peritoneal fluid or HAM-F10 for 30-180 min, and follicular fluid (in volumetric proportion approximately 50/50 with peritoneal fluid) was subsequently added. The percentage of acrosomally-reacted spermatozoa was assessed using the FITC-conjugated Pisum sativum lectin before and after incubation in peritoneal fluid or control medium, as well as after follicular fluid addition. Peritoneal fluid was not able to stimulate acrosomal reactivity; further, preincubation in peritoneal fluid decreased, but not abolished, the follicular fluid-induced acrosomal reactivity. A longer pre-incubation in peritoneal fluid was associated with a lower percentage of reacted spermatozoa in response to the addition of follicular fluid. In conclusion, our data suggest that peritoneal fluid acts maintaining spermatozoa in an unreacted status in the upper female genital tract. After mixing with follicular fluid, a phenomenon that is likely to occur at ovulation, peritoneal fluid reduces, but does not abolish, the stimulating effect of follicular fluid on acrosomal reactivity.
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Pigment production from in vitro cultures of Alkanna tinctoria Tausch. PLANT CELL REPORTS 1994; 13:406-410. [PMID: 24193912 DOI: 10.1007/bf00234148] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/1993] [Revised: 01/24/1994] [Indexed: 06/02/2023]
Abstract
An in vitro culture of Alkanna tinctoria Tausch cells was set up in order to investigate the possibility of producing alkannin, a red naphthoquinone naturally present in the root bark of this plant. Furthermore, an in vitro culture of callusderived roots was established and the production of alkannin evaluated. In the different experimental conditions investigated, differences in the production of alkannin derivatives as well as in the type of pigments produced, were observed. The potential use of this technology is discussed.
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Abstract
The role of tumor necrosis factor-alpha was investigated in an anaesthetized rat model of coronary artery ligation (60 min) and reperfusion (MI/R). Sham-occluded rats (sham MI/R) were used as controls. Survival rate, myocardial necrosis, myocardial myeloperoxidase activity, serum creatinine kinase activity and serum and macrophage tumor necrosis factor-alpha were studied. Ischaemia-reperfusion injury significantly reduced survival rate (45%), produced marked myocardial injury, increased serum creatinine kinase activity and increased myocardial myeloperoxidase activity in the area-at-risk and in the necrotic area. Serum tumor necrosis factor-alpha was undetectable during the occlusion period, but increased significantly upon release of the coronary artery. At the end of reperfusion, macrophage tumor necrosis factor-alpha was also increased. Passive immunization with a hyperimmune serum containing antibodies against murine tumor necrosis factor-alpha significantly increased survival rate (80%), lowered myocardial necrosis, reduced the increase in serum creatinine kinase activity and decreased myeloperoxidase activity in the area-at-risk and in the necrotic area. These data are consistent with an involvement of tumor necrosis factor-alpha in myocardial ischaemia-reperfusion injury.
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The effect of cloricromene, a coumarine derivative, on leukocyte accumulation, myocardial necrosis and TNF-alpha production in myocardial ischaemia-reperfusion injury. Life Sci 1993; 53:341-55. [PMID: 8392130 DOI: 10.1016/0024-3205(93)90753-p] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The effects of cloricromene, a coumarine derivative, were studied in an anaesthetized rat model of coronary artery ligation (60 min) followed by reperfusion (60 min; MI/R). Sham operated rats were used as controls (Sham MI/R). Myocardial ischaemia-reperfusion injury produced a marked myocardial injury (necrotic area/area-at-risk = 68 +/- 4%; necrotic area/total area = 48 +/- 3%) high serum creatinphosphokinase activity (Sham MI/R = 29 +/- 8 U/ml; MI/R = 205 +/- 11 U/ml) and elevated myocardial myeloperoxidase activity (investigated as an index of leukocyte adhesion and accumulation), in the area-at-risk (6.3 +/- 0.2 U x 10(-3)/g tissue) and in necrotic area (6.5 +/- 0.5 U x 10(-3)/g tissue). Furthermore, serum TNF-alpha was undetectable during the occlusion period, but upon the release of the coronary artery significantly increased. At the end of reperfusion, macrophage TNF-alpha was also enhanced. The administration of cloricromene (2 mg/kg, 5 minutes after the onset of reperfusion) significantly reduced myocardial injury (necrotic area/area-at-risk 30 +/- 1.3%; necrotic area/total area = 25 +/- 1.5) blunted the increase in serum creatinphosphokinase activity (92 +/- 5 U/ml) and lowered myeloperoxidase activity in area-at-risk (2.5 +/- 0.2 U x 10(-3)/g tissue) and in necrotic area (2.2 +/- 0.3 U x 10(-3)/g tissue) and decreased the serum and macrophage levels of TNF-alpha. These data indicate that cloricromene exerts beneficial effects on myocardial ischaemia/reperfusion injury. Finally, since we measured increased serum levels of TNF-alpha that were blunted by the cloricromene treatment, our data are consistent with an involvement of TNF-alpha in the reperfusion injury induced by myocardial ischaemia.
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[Augmentation of the biodisposition of simple sugars from sorghum biomass mediated with biotechnologic processes]. BOLLETTINO DELLA SOCIETA ITALIANA DI BIOLOGIA SPERIMENTALE 1990; 66:59-66. [PMID: 2322444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The results of the enzymatic hydrolysis of pectin, hemicellulose and cellulose in the biomass of sweet sorghum (Sorghum vulgare var. saccharatum, L.) are reported. Some commercial enzymatic preparations were used: Maxazym CL 2000 (with prevailing cellulase activity), Rapidase C 80 (with prevailing pectinase activity) Rohament PC (mainly with pectinase and cellulase activities) and Rohament O (mainly with pectinase and hemicellulase activities). The treatment with Rohament PC, Rohament O and Rapidase C 80 gives an increase of the glucose content higher than the effect induced by Maxazym CL 2000. On the other hand, the cellulase and pectinase combined treatment (Maxazym CL 2000 + Rapidase C 80 or Maxazym CL 2000 + Rohament O) shows a good synergistic effect in the degradation of the plant cell wall cellulosic material.
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Properties of European eel (Anguilla anguilla) liver cell sap acetyl-CoA carboxylase. BOLLETTINO DELLA SOCIETA ITALIANA DI BIOLOGIA SPERIMENTALE 1988; 64:707-14. [PMID: 2905607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Regulation of eel (Anguilla anguilla) liver acetyl-CoA carboxylase by changes in the polymeric state of the enzyme. BOLLETTINO DELLA SOCIETA ITALIANA DI BIOLOGIA SPERIMENTALE 1988; 64:715-22. [PMID: 2905608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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