21 results on '"Ahlin K"'
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2. The Demonstration of a Tool for Self-Estimating Digital Competence.
- Author
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Ahlin K
- Subjects
- Humans, Surveys and Questionnaires, Motivation, Clinical Competence
- Abstract
This study presents the results from a demonstration of a tool for self-estimation of digital competence for nurses and assistant nurses. The data was gathered from twelve participants working as leaders of older care homes. The results show that digital competence is of importance in health and social care, that the dimension of motivation is of utmost importance and that the presentation of the survey results should be flexible.
- Published
- 2023
- Full Text
- View/download PDF
3. Improving Well-Being in Schools - Lessons Learned from IoT Experts.
- Author
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Kitkowska A and Ahlin K
- Subjects
- Child, Adolescent, Humans, Knowledge, Qualitative Research, Schools, Internet of Things
- Abstract
The Internet of Things (IoT) is a source of knowledge about the surrounding environment and people in such an environment. The insights collected by IoT can provide the knowledge needed to improve people's health and overall well-being. Schools are one environment where IoT is scarcely applied, yet, it is expected that this is where children and teenagers spend most of their time. Drawing on previous findings, this paper presents preliminary results from qualitative inquiry investigating how and what IoT-based solutions could support health and well-being in elementary educational settings.
- Published
- 2023
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4. IoT in Elementary School for Everyone - A Research Plan.
- Author
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Ahlin K, Wästlund E, Ahmad A, Nöjd S, Mozelius P, and Sodhro AH
- Subjects
- Child, Humans, Students, Technology, Internet of Things, Mental Health standards, Research Design trends, Schools trends
- Abstract
We propose a tentative research plan to increase students' mental health in elementary schools by implementing Internet of Things (IoT) technology. The research plan should answer how to support students' mental health using IoT solutions and the critical factors influencing testbeds for IoT solutions with the previously mentioned purpose. Our intended research method is Design Science, which we plan to use stepwise.
- Published
- 2022
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5. The Robotic Workbench and poultry processing 2.0.
- Author
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Ahlin K
- Published
- 2022
- Full Text
- View/download PDF
6. Antecedents and neuroimaging patterns in cerebral palsy with epilepsy and cognitive impairment: a population-based study in children born at term.
- Author
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Ahlin K, Jacobsson B, Nilsson S, and Himmelmann K
- Subjects
- Cerebral Palsy complications, Child, Preschool, Cognition Disorders complications, Cohort Studies, Epilepsy complications, Female, Humans, Infant, Newborn, Magnetic Resonance Imaging, Male, Obstetric Labor Complications epidemiology, Pregnancy, Pregnancy Complications epidemiology, Registries, Sweden epidemiology, Term Birth, Cerebral Palsy diagnostic imaging, Cognition Disorders diagnostic imaging, Epilepsy diagnostic imaging
- Abstract
Introduction: Antecedents of accompanying impairments in cerebral palsy and their relation to neuroimaging patterns need to be explored., Material and Methods: A population-based study of 309 children with cerebral palsy born at term between 1983 and 1994. Prepartum, intrapartum, and postpartum variables previously studied as antecedents of cerebral palsy type and motor severity were analyzed in children with cerebral palsy and cognitive impairment and/or epilepsy, and in children with cerebral palsy without these accompanying impairments. Neuroimaging patterns and their relation to identified antecedents were analyzed. Data were retrieved from the cerebral palsy register of western Sweden, and from obstetric and neonatal records., Results: Children with cerebral palsy and accompanying impairments more often had low birthweight (kg) (odds ratio 0.5, 95% confidence interval 0.3-0.8), brain maldevelopment known at birth (p = 0.007, odds ratio ∞) and neonatal infection (odds ratio 5.4, 95% confidence interval 1.04-28.4). Moreover, neuroimaging patterns of maldevelopment (odds ratio 7.2, 95% confidence interval 2.9-17.2), cortical/subcortical lesions (odds ratio 5.3, 95% confidence interval 2.3-12.2) and basal ganglia lesions (odds ratio 7.6, 95% confidence interval 1.4-41.3) were more common, wheras white matter injury was found significantly less often (odds ratio 0.2, 95% confidence interval 0.1-0.5). In most children with maldevelopment, the intrapartum and postpartum periods were uneventful (p < 0.05). Cerebral maldevelopment was associated with prepartum antecedents, whereas subcortical/cortical and basal ganglia lesions were associated with intrapartum and postpartum antecedents., Conclusion: No additional factor other than those related to motor impairment was associated with epilepsy and cognitive impairment in cerebral palsy. Timing of antecedents deemed important for the development of cerebral palsy with accompanying impairments were supported by neuroimaging patterns., (© 2017 Nordic Federation of Societies of Obstetrics and Gynecology.)
- Published
- 2017
- Full Text
- View/download PDF
7. Antecedents of cerebral palsy according to severity of motor impairment.
- Author
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Ahlin K, Himmelmann K, Nilsson S, Sengpiel V, and Jacobsson B
- Subjects
- Brain Diseases, Cesarean Section, Fetal Diseases, Humans, Apgar Score, Cerebral Palsy
- Abstract
Introduction: The purpose of this study was to determine whether antecedents and neuroimaging patterns vary according to the severity of motor impairment in children with cerebral palsy., Material and Methods: A population-based study in which all 309 term-born children with spastic and dyskinetic cerebral palsy born between 1983 and 1994 and 618 matched controls were studied. Antecedents were retrieved from obstetric records. Information on neuroimaging was retrieved from the cerebral palsy Register of Western Sweden. Cases were grouped by severity of motor impairment: mild (walks without aids), moderate (walks with aids) or severe (dependent on wheelchair). Binary logistic regression, the Cochran-Armitage test for trends, interaction analyses and interrelationship analyses were performed., Results: Antecedents associated with mild motor impairment were antepartum (placental weight, maternal weight and antibiotic therapy) or intrapartum and postpartum adverse events (meconium-stained amniotic fluid, low Apgar score, admission to neonatal intensive care unit and neonatal encephalopathy). Antecedents associated with severe motor impairment were antepartum (congenital infection, small head circumference and brain maldevelopment) or intrapartum and postpartum (emergency cesarean section and maternal antibiotic therapy). Comparisons between mild and severe motor impairment revealed congenital infection, maldevelopment, neonatal encephalopathy and meconium aspiration syndrome significantly more often in the group with severe motor impairment (p < 0.05). White matter injury was the most common neuroimaging pattern in mild motor impairment, whereas maldevelopment and cortical/subcortical lesions were most common in the severe motor impairment group., Conclusions: Our results suggest a variation in antecedents associated with cerebral palsy, related to severity of motor impairment. Timing of antecedents corresponded to neuroimaging patterns., (© 2016 Nordic Federation of Societies of Obstetrics and Gynecology.)
- Published
- 2016
- Full Text
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8. Cerebral palsy and perinatal infection in children born at term.
- Author
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Ahlin K, Himmelmann K, Hagberg G, Kacerovsky M, Cobo T, Wennerholm UB, and Jacobsson B
- Subjects
- Case-Control Studies, Cerebral Palsy microbiology, Female, Fetal Diseases microbiology, Humans, Infant, Newborn, Infections complications, Infections microbiology, Pregnancy, Risk Assessment, Risk Factors, Sweden epidemiology, Cerebral Palsy epidemiology, Fetal Diseases epidemiology, Infections epidemiology
- Abstract
Objective: To investigate the link between infection-related risk factors for cerebral palsy subtypes in children born at term., Methods: A case-control study was performed in a population-based series of children with cerebral palsy born at term (n=309) matched with a control group (n=618). The cases were divided into cerebral palsy subtypes: spastic hemiplegia, spastic diplegia, spastic tetraplegia, and dyskinetic cerebral palsy. All forms of spastic cerebral palsy were also analyzed together. All records were examined for maternal and neonatal signs of infection. Univariate and adjusted analyses were performed., Results: Infection-related risk factors were shown to be independent risk factors for spastic cerebral palsy in the adjusted analyses. This was especially pronounced in the subgroup with spastic hemiplegia in which bacterial growth in urine during pregnancy (n=11 [7.5%], odds ratio [OR] 4.7, 95% confidence interval [CI] 1.5-15.2), any infectious disease during pregnancy (n=57 [39.0%], OR 2.9, 95% CI 1.7-4.8), severe infection during pregnancy (n=12 [8.2%], OR 15.4, 95% CI 3.0-78.1), antibiotic therapy once during pregnancy (n=33 [22.6%], OR 6.3, 95% CI 3.0-15.2) as well as several times during pregnancy (n=9 [6.2%], OR 15.6, 95% CI 1.8-134.2) constituted strong independent risk factors. However, only neonatal infection (n=11 [9.1%], OR 14.7, 95% CI 1.7-126.5) was independently significantly associated with an increased risk of spastic diplegia and tetraplegia., Conclusions: Infection-related factors are strong independent risk factors for the subgroup with spastic hemiplegia in children with cerebral palsy born at term. The finding is less pronounced in the subgroups with spastic diplegia or tetraplegia., Level of Evidence: II.
- Published
- 2013
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9. Non-infectious risk factors for different types of cerebral palsy in term-born babies: a population-based, case-control study.
- Author
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Ahlin K, Himmelmann K, Hagberg G, Kacerovsky M, Cobo T, Wennerholm UB, and Jacobsson B
- Subjects
- Case-Control Studies, Female, Humans, Infant, Newborn, Pregnancy, Risk Factors, Sweden epidemiology, Cerebral Palsy epidemiology, Cerebral Palsy etiology
- Abstract
Objective: To identify non-infectious antenatal and perinatal risk factors for cerebral palsy (CP) and its subtypes in children born at term., Design: A population-based, case-control study., Setting: The western healthcare region of Sweden., Population: A population-based series of children with CP born at term during 1983-94 (n=309) was matched with a control group (n=618)., Methods: A total of 62 variables, maternal characteristics, and prepartal, intrapartal and postpartal variables were retrieved from obstetric records. Both univariate and multivariate analyses were performed for spastic and dyskinetic CP, and for the total CP group., Main Outcome Measures: Cerebral palsy (CP) and subtypes., Results: Univariate analysis resulted in 26 significant risk factors for CP. Birthweight (OR 0.54, 95% CI 0.39-0.74), not living with the baby's father (OR 2.58, 95% CI 1.11-5.97), admittance to a neonatal intensive care unit (NICU) (OR 4.43, 95% CI 3.03-6.47), maternal weight at 34 weeks of gestation (OR 1.02, 95% CI 1.00-1.03) and neonatal encephalopathy (OR 69.2, 95% CI 9.36-511.89) were found to be risk factors for CP in the total CP group in our multivariate analysis. Factors during the periods before, during and after delivery were all shown to increase the risk of spastic diplegia and tetraplegia, whereas mostly factors during the period before delivery increased the risk of spastic hemiplegia, and only factors during delivery increased the risk of dyskinetic CP. Admittance to an NICU was a risk factor for all CP subtypes., Conclusions: The risk factor pattern differed by CP subtype. The presented risk factors may be useful indicators for identifying children at risk of developing CP, and helpful for targeting individuals for early intervention programmes., (© 2013 The Authors BJOG An International Journal of Obstetrics and Gynaecology © 2013 RCOG.)
- Published
- 2013
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10. 3-Oxoisoindoline-1-carboxamides: potent, state-dependent blockers of voltage-gated sodium channel Na(V)1.7 with efficacy in rat pain models.
- Author
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Macsari I, Besidski Y, Csjernyik G, Nilsson LI, Sandberg L, Yngve U, Ahlin K, Bueters T, Eriksson AB, Lund PE, Venyike E, Oerther S, Hygge Blakeman K, Luo L, and Arvidsson PI
- Subjects
- Amides pharmacokinetics, Amides pharmacology, Analgesics pharmacokinetics, Analgesics pharmacology, Animals, Arthritis, Experimental drug therapy, Arthritis, Experimental etiology, CHO Cells, Carrageenan, Chronic Pain drug therapy, Chronic Pain etiology, Cricetinae, Cricetulus, HEK293 Cells, Humans, Isoindoles pharmacokinetics, Isoindoles pharmacology, Male, Microsomes, Liver metabolism, NAV1.7 Voltage-Gated Sodium Channel, Pain etiology, Patch-Clamp Techniques, Rats, Rats, Sprague-Dawley, Sodium Channel Blockers pharmacokinetics, Sodium Channel Blockers pharmacology, Solubility, Spinal Nerves injuries, Structure-Activity Relationship, Amides chemical synthesis, Analgesics chemical synthesis, Isoindoles chemical synthesis, Pain drug therapy, Sodium Channel Blockers chemical synthesis, Sodium Channels physiology
- Abstract
The voltage-gated sodium channel Na(V)1.7 is believed to be a critical mediator of pain sensation based on clinical genetic studies and pharmacological results. Clinical utility of nonselective sodium channel blockers is limited due to serious adverse drug effects. Here, we present the optimization, structure-activity relationships, and in vitro and in vivo characterization of a novel series of Na(V)1.7 inhibitors based on the oxoisoindoline core. Extensive studies with focus on optimization of Na(V)1.7 potency, selectivity over Na(V)1.5, and metabolic stability properties produced several interesting oxoisoindoline carboxamides (16A, 26B, 28, 51, 60, and 62) that were further characterized. The oxoisoindoline carboxamides interacted with the local anesthetics binding site. In spite of this, several compounds showed functional selectivity versus Na(V)1.5 of more than 100-fold. This appeared to be a combination of subtype and state-dependent selectivity. Compound 28 showed concentration-dependent inhibition of nerve injury-induced ectopic in an ex vivo DRG preparation from SNL rats. Compounds 16A and 26B demonstrated concentration-dependent efficacy in preclinical behavioral pain models. The oxoisoindoline carboxamides series described here may be valuable for further investigations for pain therapeutics.
- Published
- 2012
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11. Lifestyle changes - a continuous, inner struggle for women with type 2 diabetes: a qualitative study.
- Author
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Ahlin K and Billhult A
- Subjects
- Adult, Aged, Aged, 80 and over, Female, Humans, Middle Aged, Qualitative Research, Sweden, Adaptation, Psychological, Conflict, Psychological, Diabetes Mellitus, Type 2 psychology, Life Style
- Abstract
Objective: The objective of this study was to describe how women handle necessary lifestyle changes due to a chronic disease using diabetes as a model., Design: Interview study., Setting: Ten women living in western Sweden were interviewed., Method: In-depth interviews and analysis were performed using the phenomenological ideas of Giorgi., Subjects: Ten women diagnosed with type 2 diabetes, mean age 65. All were either on disability pension or retired with varying complications ranging from none to stroke., Results: The findings revealed five themes: the ambiguous feeling of others' involvement, becoming a victim of pressurizing demands, experiencing knowledge deficits, experiencing an urge, and finding reasons to justify not changing. The invariant meaning of a continuous inner struggle illuminates the experience of making lifestyle changes for women with type 2 diabetes., Conclusion: The findings of the present study show that it is vital for health care professionals to treat women diagnosed with type 2 diabetes with great respect and understanding regarding the struggle that they are going through. By being aware of the everyday burden for these women, acknowledging the fact that they want their lives to go on as before, may serve as a "key" to assist women in changing attitudes towards living in accordance with the disease and appreciating the lifestyle changes as a challenge as they become healthier and improve their quality of life.
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- 2012
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12. Risk factors for cerebral palsy in children born at term.
- Author
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Himmelmann K, Ahlin K, Jacobsson B, Cans C, and Thorsen P
- Subjects
- Cerebral Palsy epidemiology, Cerebral Palsy physiopathology, Delivery, Obstetric adverse effects, Female, Humans, Incidence, Infant, Newborn, Male, Maternal Welfare, Obstetric Labor Complications diagnosis, Parity, Pregnancy, Risk Factors, Socioeconomic Factors, Survival Rate, Sweden epidemiology, Cerebral Palsy etiology, Fetal Growth Retardation epidemiology, Obstetric Labor Complications epidemiology, Pregnancy Complications, Infectious epidemiology, Term Birth
- Abstract
Objective: To provide an overview of current research on risk factors for cerebral palsy (CP) in children born at term and hypothesize how new findings can affect the content of the CP registers worldwide., Design: A systematic search in PubMed for original articles, published from 2000 to 2010, regarding risk factors for CP in children born at term was conducted., Methods: Full text review was made of 266 articles., Main Outcome Measures: Factors from the prenatal, perinatal and neonatal period considered as possible contributors to the causal pathway to CP in children born at term were regarded as risk factors., Results: Sixty-two articles met the criteria for an original report on risk factors for CP in children born at term. Perinatal adverse events, including stroke, were the focus of most publications, followed by genetic studies. Malformations, infections, perinatal adverse events and multiple gestation were risk factors associated with CP. The evidence regarding, for example, thrombophilic factors and non-CNS abnormalities was inconsistent., Conclusions: Information on maternal and neonatal infections, umbilical cord blood gases at birth, mode of delivery and placental status should be collected in a standardized way in CP registers. Information on social factors, such as education level, family income and area of residence, is also of importance. More research is needed to understand the risk factors of CP and specifically how they relate to causal pathways of cerebral palsy., (© 2011 The Authors Acta Obstetricia et Gynecologica Scandinavica© 2011 Nordic Federation of Societies of Obstetrics and Gynecology.)
- Published
- 2011
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13. Cerebral palsy and restricted growth status at birth: population-based case-control study.
- Author
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Jacobsson B, Ahlin K, Francis A, Hagberg G, Hagberg H, and Gardosi J
- Subjects
- Case-Control Studies, Cerebral Palsy physiopathology, Cohort Studies, Female, Fetal Growth Retardation physiopathology, Humans, Infant, Newborn, Male, Pregnancy, Prenatal Exposure Delayed Effects physiopathology, Risk Factors, Cerebral Palsy embryology, Infant, Premature physiology, Infant, Small for Gestational Age physiology
- Abstract
Objective: To evaluate the association between growth status at birth and subsequent development of cerebral palsy in preterm and term infants., Design: Population-based case-controlled study., Setting: Cerebral palsy register in Western Sweden. Subjects Cohort of 334 singletons born between 1983 and 1990, with cerebral palsy diagnosed from age 4, and 668 singletons matched for gestation, gender and delivery unit., Method: Growth status at birth was determined using small for gestational age (SGA) categories, with customised birthweight percentiles (SGAcust) based on the Swedish population., Main Outcome Measures: Proportion of babies that were SGAcust, comparing cases and controls in three gestational age categories: early preterm (24-33 weeks), late preterm (34-36 weeks) and term (37+ weeks)., Results: Of the 334 children with cerebral palsy, 87 (26.6%) were born early preterm, 27 (8.1%) late preterm and 218 (66%) at term. Children who had been born at term were more likely to have been SGA <1st customised percentile (SGAcust1) than their matched controls (OR 6.6, 95% CI 2.3-18.6). In contrast, children with cerebral palsy born preterm were not more likely to have been SGAcust1 (OR 0.9, 95% CI 0.4-1.9), and this applied to early preterm as well as late preterm births. For less severely small babies (SGA between 1st and 5th customised percentiles), the association with cerebral palsy remained significant for term births (OR 5.2, 95% CI 2.7-10.1) but was again not significant for preterm births., Conclusions: Term singletons with severely SGA birthweights had a five- to seven-fold risk of developing cerebral palsy compared with gestational age-matched infants with birthweights within normal limits. For children born preterm, SGA was not more likely to be present in cases than in controls. These findings support the concept of cerebral palsy as a multifactorial condition and highlight the importance of antenatal surveillance of fetal growth.
- Published
- 2008
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14. Design and parallel solid-phase synthesis of ring-fused 2-pyridinones that target pilus biogenesis in pathogenic bacteria.
- Author
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Emtenäs H, Ahlin K, Pinkner JS, Hultgren SJ, and Almqvist F
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- Escherichia coli drug effects, Escherichia coli metabolism, Escherichia coli Proteins antagonists & inhibitors, Escherichia coli Proteins metabolism, Molecular Chaperones antagonists & inhibitors, Molecular Chaperones metabolism, Periplasmic Proteins antagonists & inhibitors, Periplasmic Proteins metabolism, Pyridones pharmacology, Surface Plasmon Resonance, Combinatorial Chemistry Techniques methods, Fimbriae, Bacterial drug effects, Pyridones chemical synthesis
- Abstract
A new method for the solid-phase synthesis of enantiomerically enriched highly substituted ring-fused 2-pyridinones 13 has been developed. The synthesis mediates introduction of substituents at two positions in the 2-pyridinone ring in a diverse manner and is suitable for parallel synthesis. (19)F NMR spectroscopy was used as a tool to monitor each of the five steps in the reaction sequence. The optimized conditions thus obtained were then used to prepare a library of 20 2-pyridinones with high yields. The library members were chosen from a statistical multivariate design to ensure diversity and reliable data for structure-activity relationships. Screening of the library against the bacterial periplasmic chaperone PapD was performed using surface plasmon resonance. Three new 2-pyridinones with a higher affinity for the chaperone PapD than the previous best 13[10,1] were found, and important structural features could be deduced.
- Published
- 2002
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15. Blockade of nitric oxide synthesis reduces myocardial oxygen consumption in vivo.
- Author
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Sherman AJ, Davis CA 3rd, Klocke FJ, Harris KR, Srinivasan G, Yaacoub AS, Quinn DA, Ahlin KA, and Jang JJ
- Subjects
- Animals, Blood Pressure drug effects, Carbon Dioxide blood, Coronary Circulation drug effects, Dogs, Heart physiology, Heart Rate drug effects, Myocardial Contraction drug effects, Nitric Oxide physiology, Oxygen blood, Ventricular Function, Left drug effects, Enzyme Inhibitors pharmacology, Heart drug effects, Hemodynamics drug effects, Myocardium metabolism, NG-Nitroarginine Methyl Ester pharmacology, Nitric Oxide Synthase antagonists & inhibitors, Nitroarginine pharmacology, Oxygen Consumption drug effects
- Abstract
Background: Although cardiac myocytes and coronary vascular endothelium are known to express a constitutive form of NO synthase, the in vivo effects of tonic endogenous production of NO on myocardial O2 consumption and contractile performance remain unclear., Methods and Results: The effects of blockade of NO synthase were determined in intact dogs. Myocardial O2 consumption decreased systematically over a wide range of hemodynamic demand after the systemic administration of N omega-nitro-L-arginine methyl ester (L-NAME) or N omega-nitro-L-arginine. Decreases after doses of 1 and 10 mg/kg L-NAME averaged 23 +/- 3.8% and 34 +/- 7.2% at a heart rate of 90 bpm in open-chest animals. Similar reductions occurred after the administration of L-NAME and N omega-nitro-L-arginine in chronically instrumented animals and were unaffected by beta-adrenergic blockade. Intracoronary infusion of L-NAME in chronically instrumented animals reduced both myocardial O2 consumption and regional segment shortening, even at a dose that did not increase systemic arterial pressure., Conclusions: The blockade of NO synthesis reduces myocardial O2 consumption in vivo. The decrease in O2 consumption is accompanied by a decrease in segment shortening. It involves a direct myocardial action of NO, is unaffected by beta-blockade, and is consistent with in vitro studies indicating that low levels of NO augment contractile performance by inhibition of a cGMP-dependent phosphodiesterase.
- Published
- 1997
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16. Endothelium-derived relaxing factor (nitric oxide) has a tonic vasodilating action on coronary collateral vessels.
- Author
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Frank MW, Harris KR, Ahlin KA, and Klocke FJ
- Subjects
- Animals, Arginine analogs & derivatives, Arginine pharmacology, Dilatation, Pathologic, Disease Models, Animal, Dogs, Female, Hemodynamics drug effects, Humans, Male, NG-Nitroarginine Methyl Ester, Nitric Oxide Synthase antagonists & inhibitors, Collateral Circulation drug effects, Coronary Vessels drug effects, Myocardial Ischemia pathology, Nitric Oxide physiology
- Abstract
Objectives: We sought to determine whether endothelium-derived relaxing factor (nitric oxide) exerts a tonic vasodilating effect on coronary collateral channels developed in response to myocardial ischemia., Background: Although the coronary collateral circulation is known to react to several vasoactive agents, the role of endogenously produced nitric oxide is unclear., Methods: Coronary collateral channels were induced in the left circumflex artery bed of 12 chronically instrumented dogs by either ameroid implantation or repeated occlusion of the left circumflex coronary artery. With the native circumflex artery occluded, aortic and circumflex pressures and microsphere flows were measured before and after systemic administration of NG-nitro-L-arginine methyl ester, an arginine analogue known to block the synthesis of nitric oxide., Results: NG-nitro-L-arginine methyl ester increased mean aortic pressure from a mean +/- SEM of 92 +/- 4 to 114 +/- 4 mm Hg, whereas pressure in the occluded circumflex artery decreased from 61 +/- 4 to 55 +/- 4 mm Hg. The increase in aortic-circumflex pressure gradient (from 31 +/- 4 to 59 +/- 5 mm Hg) was accompanied by a decrease in flow in the circumflex bed (from 1.31 to +/- 0.14 to 1.09 +/- 0.15 ml/min per g), resulting in an increase in coronary collateral resistance averaging 173 +/- 37% (from 26 +/- 4 to 64 +/- 9 mm Hg/ml per min per g, p < 0.01). The increase in collateral resistance could be partially reversed by administration of L-arginine., Conclusions: We conclude that nitric oxide normally exerts a substantial tonic dilating effect in coronary collateral vessels. Disease-induced alterations in endothelial function may limit collateral perfusion importantly.
- Published
- 1996
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17. Rapeseed products from double-low cultivars as feed for dairy cows: effects of long-term feeding on thyroid function, fertility and animal health.
- Author
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Ahlin KA, Emanuelson M, and Wiktorsson H
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- Animal Welfare, Animals, Female, Glucosinolates metabolism, Lactation, Thyrotropin blood, Urea blood, Animal Feed, Brassica, Cattle physiology, Dietary Proteins pharmacology, Fertility physiology, Thyroid Gland physiology
- Abstract
Eighty-five dairy cows of the Swedish Red and White Breed (SRB) were included in a long-term experiment during 3 consecutive lactations. The cows were divided into 3 different dietary groups that received no rapeseed (NR), up to 1.2 kg dry matter (DM) 00-rapeseed meal plus 0.2 kg DM full-fat 00-rapeseed (MR), and up to 2.5 kg DM 00-rapeseed meal plus 0.9 kg DM full-fat 00-rapeseed (HR) per day. No significant differences in culling rates or disease rates were found between the feeding groups at any time during the experiment. The interval from calving to conception among the primiparous cows was longer for the HR-group (125 days) than for the NR-group (100 days). The response to a thyrotroph releasing hormone around 90 days postpartum during the first lactation was significantly higher for the HR-group (86.7 mu/L/h) than for the NR-group (55.2 micrograms/L/h). This indicates that at the highest level of rapeseed feeding, glucosinolates had a very mild, suppressive influence on thyroid hormone release, apparently compensated for by an increased activity along the hypothalamic-pituitary-thyroid axis. No significant differences in fertility or thyroid function were found among the pluriparous cows. During 2nd lactation the concentration of serum urea was higher in the NR-group (7.31 mmol/L) than in the HR-group (6.83 mol/L). The effects of independent environmental factors influenced fertility and thyroid function to a much greater extent than the rapeseed feeding. It was concluded that the feeding of rapeseed products from certified double low varieties of B. napus to adult dairy cows in amounts up to 3 kg rapeseed meal per cow and day would not have any negative effects on animal health or fertility.
- Published
- 1994
18. The male genital tract and the nipples of male and female offspring of rats given the non-steroidal antiandrogens DIMP and Sch 13521, during pregnancy.
- Author
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Ahlin K, Forsberg JG, Jacobsohn D, and Thore-Berger B
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- Animals, Animals, Newborn, Ejaculatory Ducts drug effects, Female, Genitalia, Male drug effects, Male, Mammary Glands, Animal drug effects, Morphogenesis drug effects, Nipples drug effects, Pregnancy, Prostate drug effects, Rats, Testosterone physiology, Vagina abnormalities, Abnormalities, Drug-Induced, Androgen Antagonists, Anilides toxicity, Breast abnormalities, Flutamide toxicity, Genitalia, Male abnormalities, Nipples abnormalities, Oxazoles toxicity, Phthalimides toxicity
- Abstract
Male and female offspring of rats given antiandrogens, the steroidal BOMT or the non steroids DIMP or Sch 13521, daily during the last third of pregnancy were studied. Detailed examinations were made of the genital tract of male, and of the nipples of male and female offspring. A) Male offspring. 1) Genital tract of newborn and 31-91 day old males : Modifications of the development of accessory sexual tissues were found in all treatment groups. As indicated by the severity of deviations from normal (morphology and weight of sex accessories), the antiandrogenic effect of the preparations, in the doses given to the mother rats, increased from BOMT (50 or 75 mg/day) via Sch 13521 (30 mg/day) and DIMP (50 or 60 mg/day) to Sch 13521 (60 mg/day). 2) Nipples of 10-60 day old males : Whole mount preparations were made unilaterally of the row of 6 mammary glands with nipples. The number of intact and abnormal nipples, respectively, was recorded. The relation between intact and abnormal nipples served as indicator of the efficiency of the antiandrogenic substances studied. The result showed that the antiandrogenic effect increased from BOMT to Sch 13521, 60 mg, in the same order as that arrived at from studies of the genital tract. The combined results obtained from the male offspring indicated that the tissues of the genital region, the growth and differentiation of which was most readily impaired by antiandrogens, were the same as those known from other work to be stimulated most easily in female rat fetuses by testosterone. B) Female offspring. Nipples of 31-60 day old females were judged from whole mount preparations and recorded as in the males. The nipples of adult virginal females were examined macroscopically. The same procedure was applied to lactating females, but the results were controlled in consecutive lactational periods and at autopsy. The 3 groups of females showed uniformly that 1) offspring of rats given BOMT during pregnancy had many (about 50 per cent) malformed nipples and 2) the treatment of mother rats with DIMP or Sch 13521 did not influence the development of nipples in female offspring. The result was assumed to be due to an androgenic effect of the steroidal antiandrogen, BOMT, on the nipple anlage.
- Published
- 1975
19. The effect of mastitis on milk progesterone concentration in dairy cows.
- Author
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Kassa T, Ahlin KA, Larsson K, and Kindahl H
- Subjects
- Animals, Cattle, Female, Mammary Glands, Animal metabolism, Mastitis, Bovine etiology, Radioimmunoassay, Streptococcal Infections, Streptococcus agalactiae, Mastitis, Bovine metabolism, Milk metabolism, Progesterone analysis
- Abstract
A within cow comparison was made between milk progesterone levels in healthy and mastitic quarters. Material was collected from cows with mastitis induced by bacterial inoculation, or by inoculation with bacterial endotoxin. Furthermore material from cows with spontaneous subclinical mastitis was used. Milk progesterone levels were lowered due to mastitis. However, the decrease was not large enough to cause misinterpretation of where in the oestrous cycle (luteal phase or non-luteal phase) the samples were taken.
- Published
- 1986
20. Profiles of progesterone in milk and clinical ovarian findings in postpartum cows with ovarian dysfunctions.
- Author
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Kassa T, Ahlin KA, and Larsson K
- Subjects
- Animals, Cattle, Female, Ovarian Diseases metabolism, Pregnancy, Puerperal Disorders metabolism, Cattle Diseases metabolism, Milk metabolism, Ovarian Diseases veterinary, Progesterone analysis, Puerperal Disorders veterinary
- Abstract
Milk progesterone profiles, based on twice or once weekly sampling, were constructed for postpartum dairy cows. The cows were simultaneously examined by rectal palpation and clinical ovarian findings were related to the progesterone profiles. The combination of progesterone analysis and clinical examination may be used to optimize diagnostic accuracy and a number of practical recommendations are given on the basis of the results from this study.
- Published
- 1986
21. Analogue simulator of e.e.g. signals based on spectral components.
- Author
-
Zetterberg LH and Ahlin K
- Subjects
- Electronics, Medical, Humans, Oscillometry, Computers, Analog, Electroencephalography
- Published
- 1975
- Full Text
- View/download PDF
Catalog
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