Sökning: "Maternal separation"

Visar resultat 16 - 20 av 27 avhandlingar innehållade orden Maternal separation.

1. 16. Stress, Drugs and Neuroscience : Neurobiological Effects of Social Stressors and Drug Exposure in Young and Adolescent Rats

   Författare :Linnea Granholm; Ingrid Nylander; Erika Roman; Anne-Lie Svensson; Maria Ellgren; Annika Thorsell; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Adolescence; alcohol exposure; amphetamine; beta-endorphin; dopamine; dynorphin; early life; endogenous opioids; enkephalin; gene expression; high-speed chronoamperometry; nociceptin orphanin FQ; radioimmunoassay; self-administration; social stress; voluntary alcohol intake; Farmaceutisk vetenskap; Pharmaceutical Science;

   Sammanfattning : Experiences early in life or during adolescence modulate neuronal networks in the immature brain and consequently lay the foundation for future susceptibility or resilience towards psychiatric disorders. The objective in this thesis is to understand, in part, how the surrounding environment shapes the brain of a young individual. LÄS MER

3. 17. Mode of delivery, epigenetic modulation and immune cell formation at birth

   Författare :Titus Schlinzig; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : Background: Birth by Cesarean section (CS) has been associated with a greater risk for immune disorders like allergy, asthma, type 1 diabetes, celiac disease, inflammatory bowel diseases, and cancer later in life. Although elective CS continues to increase rapidly, it is unclear if and how it may contribute to future health and disease. LÄS MER

4. 18. Preterm birth : parents' experiences, affect, stress and inflammatory markers

   Författare :Emma Fransson; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : Preterm birth (PTB), before 37 completed weeks of gestation, is the principal risk factor for neonatal morbidity and mortality. In Sweden about 5.6% of pregnant women deliver preterm. The etiology of PTB is not fully understood, but it has been suggested that the underlying mechanisms could have both biological and psychosocial origins. LÄS MER

5. 19. Morphometric and molecular variation in the Nordic dogroses (Rosa Sect. Caninae, Rosaceae)

   Författare :Åsa Olsson; Biologiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Systematisk botanik; chemotaxonomy. Physiology of nonvascular plants; Genetic diversity; Geographic differentiation; Systematic botany; RAPDs; taxonomy; morphology; phytogeography; kemotaxonomi. Växters fysiologi inte kärlväxter .; taxonomi; morfologi;

   Sammanfattning : In the present thesis, I investigate the hierarchical structure of morphometric and molecular diversity within and between the Nordic dogroses (Rosa Sect. Caninae, Rosaceae). I also investigate patterns of geographic differentiation and taxonomic relationships within the group. LÄS MER

7. 20. Systematics, phylogeography and polyploid evolution in the Dactylorhiza maculata complex (Orchidaceae)

   Författare :David Ståhlberg; Biologiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ITS; morphometry; taxonomy; Systematic botany; Växtekologi; Plant ecology; vegetation analysis; recombination; polyploidy; plastid DNA; niche differentiation; chemotaxonomy. Physiology of nonvascular plants; morphology; phytogeography; hybrid zone; glacial refugia; Dactylorhiza; flow cytometry; Systematisk botanik; taxonomi; morfologi; kemotaxonomi. Växters fysiologi inte kärlväxter .;

   Sammanfattning : The aim of this thesis was to investigate and describe different aspects of variation in the Dactylorhiza maculata complex and to relate the variation patterns to underlying biological processes such as Quaternary migration history, hybridization and polyploid evolution. The variation patterns were analysed at various geographic levels using molecular markers (plastid DNA and ITS of nrDNA), cytological data, morphometry and ecological data. LÄS MER