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Abstract: Modern biotechnology raises different types of issues which should be addressed at the appropriate time and level in accordance with the subsidiary principle. Strengthening and/or developing adequate mechanisms and authorities concerns should base on sound scientific data and clear correct facts. Such biosafety framework has also to be capable of safeguarding the environment, biodiversity, the multifuctionality of our agriculture, and allowing consumer to choose if they wish between the products of genetically modified organisms (GMOs), conventional or organic agriculture. It should enables our industry to seize the opportunity that these technology offers, for the ultimate benefit as society at large. Potential risk assessment of GMOs involves technical and regulatory procedures to work best with public involvement and dissemination of information, and with respect to the legislation of GMOs and their products. Consequently, the establishment of a national biosafety system is a common need. It is important that each element of it presents unique management challenges and resources requirements, which should be review during the national case studies, and working group exercises. We should not transfer biosafety schemes from others without being critical. From a global perspective, the implementation of such system can also be mutually supportive and should provide a sound international framework in order to promote the safe development of modern biotechnology, its acceptability and its use in Slovenia. The Government has defined modern biotechnology as one of the priority area of research and technological development, where Slovenia has comparative advantage and critical mass of knowledge and strengthening is given to the importance of the investment in national research, in order to create conditions for scientists to work effectively and transfer skills to industry where necessary. In view of the above, the support in form of the UNEP/GEF project ìDevelopment of National Biosafety Framework for Sloveniaî was extremely valuable to ensure effective and efficient system with respect to the adopted legislation. This document serves as a basic guide to the implementation of the biosafety system. The involvement of different ministries and several stakeholders in the preparation of this document ensures that different views were taken into account when developing effective and efficient system to enable safe use of GMOs in Slovenia.
Published in DiRROS: 04.09.2024; Views: 84; Downloads: 46
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Keywords: podnebne spremembe, upravljenje gozdov
Published in DiRROS: 05.08.2024; Views: 185; Downloads: 43
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Abstract: Cultivation-based microbiological methods are a gold standard for monitoring of airborne micro-organisms to determine the occupational exposure levels or transmission paths of a particular infectious agent. Some highly contagious microorganisms are not easily culturable but it is becoming evident that cultivation and molecular methods are complementary and in these cases highly relevant. We report a simple and efficient method for sampling and analyzing airborne bacteria with an impactor-type high-flow-rate portable air sampler, currently used for monitoring culturable bacteria or fungi. A method is reported for extraction of nucleic acids from impacted cells without prior cultivation and using agarose as a sampling matrix. The DNA extraction efficiency was determined in spiked samples and, samples taken from a wastewater treatment plant and an alpine area. The abundance, diversity and quantity of total bacteria were analysed by a quantitative polymerase chain reaction, and by construction and analysis of clone libraries. The method does not interfere with downstream PCR analysis and can cover the gap between traditional culture and molecular techniques of bioaerosol monitoring.
Published in DiRROS: 02.08.2024; Views: 249; Downloads: 119
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Abstract: Background. Liver transplantation offers curative treatment to patients with acute and chronic end-stage liver disease. The impact of nutritional status on postoperative outcomes after liver transplantation remains poorly under-stood. The present study investigated the predictive value of radiologically assessed skeletal muscle index (SMI) and myosteatosis (MI) on postoperative outcomes.Patients and methods. Data of 138 adult patients who underwent their first orthotopic liver transplantation were retrospectively analysed. SMI and MI in computer tomography (CT) scan at the third lumbar vertebra level were cal-culated. Results were analyzed for the length of hospitalisation and postoperative outcomes.Results. In 63% of male and 28.9% of female recipients, low SMI was found. High MI was found in 45(32.6%) patients. Male patients with high SMI had longer intensive care unit (ICU) stay (P < 0.025). Low SMI had no influence on ICU stay in female patients (P = 0.544), length of hospitalisation (male, P > 0.05; female, P = 0.843), postoperative complication rates (males, P = 0.883; females, P = 0.113), infection rate (males, P = 0.293, females, P = 0.285) and graft rejection (males, P = 0.875; females, P = 0.135). The presence of MI did not influence ICU stay (P = 0.161), hospitalization (P = 0.771), postoperative complication rates (P = 0.467), infection rate (P = 0.173) or graft rejection rate (P = 0.173).Conclusions. In our study, changes in body composition of liver transplant recipients observed with SMI and MI had no impact on postoperative course after liver transplantation. CT body composition analysis of recipients and uni-formly accepted cut-off points are crucial to producing reliable data in the future.
Keywords: muscle mass, liver transplantation, myosteatosis, skeletal muscle index, GLIM score
Published in DiRROS: 25.07.2024; Views: 199; Downloads: 220
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Abstract: Ethylene has impact on several physiological plant processes, including abscission, during which plants shed both their vegetative and reproductive organs. Cell separation and programmed cell death are involved in abscission, and these have also been correlated with ethylene action. However, the detailed spatiotemporal pattern of the molecular events during abscission remains unknown. We examined the expression of two tomato ACO genes, LeACO1, and LeACO4 that encode the last enzyme in ethylene biosynthesis, 1-aminocyclopropane-1-carboxylate oxidase (ACO), together with the expression of other abscission-associated genes involved in cell separation and programmed cell death, during a period of 0–12 h after abscission induction in the tomato flower pedicel abscission zone and nearby tissues. In addition, we determined their localization in specific cell layers of the flower pedicel abscission zone and nearby tissues obtained by laser microdissection before and 8 h after abscission induction. The expression of both ACO genes was localized to the vascular tissues in the pedicel. While LeACO4 was more uniformly expressed in all examined cell layers, the main expression site of LeACO1 was in cell layers just outside the abscission zone in its proximal and distal part. We showed that after abscission induction, ACO1 protein was synthesized in phloem companion cells, in which it was localized mainly in the cytoplasm. Samples were additionally treated with 1-methylcyclopropene (1-MCP), a competitive inhibitor of ethylene actions, and analyzed 8 h after abscission induction. Cell-layer-specific changes in gene expression were observed together with the specific localization and ethylene sensitivity of the hallmarks of cell separation and programmed cell death. While treatment with 1-MCP prevented separation of cells through inhibition of the expression of polygalacturonases, which are the key enzymes involved in degradation of the middle lamella, this had less impact on the occurrence of different kinds of membrane vesicles and abscission-related programmed cell death. In the flower pedicel abscission zone, the physical progressions of cell separation and programmed cell death are perpendicular to each other and start in the vascular tissues.
Keywords: abscission, ACO, cell separation, ethylene, laser microdissection, programmed cell death, tomato, ultrastructure
Published in DiRROS: 24.07.2024; Views: 192; Downloads: 249
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