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1.
  • Lundin, Anna-Carin (författare)
  • Tendinosis in Trigger Finger
  • 2017
  • Doktorsavhandling (övrigt vetenskapligt)abstract
    • <p>Trigger finger is one of the most common hand conditions, with a prevalence of almost 3%. The aetiology remains unclear even though many causes have been suggested. The prevailing paradigm is that the pathogenesis of trigger finger is ascribed to primary changes in the first fibrous condensation of the tendon sheath (A1-pulley). Several studies have investigated pathology in the pulley, but few have investigated the tendon. The general aim of this thesis was to find out if there is pathology in the trigger finger tendon and to define it.</p><p>We first looked at trigger finger tendon biopsies in a light microscope, and found that they were histologically different from healthy tendons. They showed signs of micro-ruptures, collagen degradation, increased amounts of ground substance, both hyper- and hypo-cellular areas, round active cell nuclei and absence of inflammatory cells, all similar to tendinosis. The histological picture was further assessed by using a scoring system for Achilles tendinosis. The trigger finger tendons scored high, suggesting a similar histopathology.</p><p>Next, we performed a quantitative real-time polymerase chain reaction (qPCR) on trigger finger tendons. We assessed the mRNA expression of 10 genes, which have been described to be differently expressed in Achilles tendinosis (collagen 1 and 3, versican, decorin, biglycan, aggrecan, MMP-2, MMP-3, ADAMTS-5, and TIMP-3). The overall expression pattern agreed with previous studies on Achilles tendinosis, suggesting that the cellular function in trigger finger tendons is disturbed in a similar way as in Achilles tendinosis.</p><p>Recent experimental and observational research has suggested potential side effects of statin treatment on tendons, but firm evidence was lacking. We performed an epidemiological study on two large population-based cohorts. Statin use was found to increase the risk of both trigger finger and tendinosis in the shoulder and Achilles tendons, especially among men. This suggests a similar pathology in trigger finger and tendinosis.</p><p>We have also studied the time to treatment effect after a single injection of glucocorticoid in trigger finger. Our results suggest that 60-80% of patients can expect resolution of the triggering within 14 days, and half of them within seven days. This result allows correct information to be given to the patient and proper planning of follow-ups.</p><p>In conclusion, the pathology in trigger finger tendons is similar to tendinosis in other tendons.</p>
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2.
  • Slind Olsen, Renate (författare)
  • Circulating and genetic factors in colorectal cancer Potential factors for establishing prognosis?
  • 2017
  • Doktorsavhandling (övrigt vetenskapligt)abstract
    • <p>Kolorektal cancer är en tumör i kolon eller rektum. I Sverige diagnosticerades år 2014 ca6300 individer med denna cancertyp och ca 2550 personer dör årligen till följd av kolorektalcancer. Operation är det huvudsakliga behandlingsalternativet för kolorektal cancer och vidfjärrmetastaser är överlevnaden &lt; 10 %. Det är därför viktigt att hitta markörer somtillsammans med TNM-stadium kan ge tidig information om sjukdomens prognos och lämpliguppföljning av patienter.</p><p>Utveckling av kolorektal cancer sker genom ackumulering av genetiska mutationer ochepigenetisk nedreglering av tumörsuppressorgener. Därutöver spelar interaktionen mellantumören och dess närmaste omgivning, innehållande tillväxt- och inflammatoriska faktorer,en viktig roll i tumörens utveckling och metastasering.</p><p>Syftet med avhandlingen var att studera associationen mellan CD93, PLA2G4C, PDGF-D samtinflammatoriska cytokiner och kolorektal cancer progression.</p><p>En prospektiv studie visade att CD93 och PLA2G4C SNP var potentiellt viktiga förbedömningav kolorektal cancer prognos. T/T genotypen av SNP rs2749817 i CD93 var associerad medhögre uttryck av CD93 i kolorektal cancer vävnad, främst bland patienter i stadium IV.Därutöver observerades fler återfall efter operation hos patienter med T/T genotypen. Aallelen hos PLA2G4C SNP rs1549637 är en möjligtvis bättre markör för cancerspecifiköverlevnad vid stadium II än faktorer som idag används för att selektera patienter tilladjuvant behandling. Sammantaget antyder detta att T/T genotypen av CD93 och A allelenav PLA2G4C kan vara genetiska markörer relaterade till allvarlig tumörsjukdom ochspridning. Därutöver kan de eventuellt selektera patienter som kräver tätare uppföljning ochadjuvant behandling.</p><p>För att studera den förmodade inblandningen av PDGF-D i kolorektal cancer undersöktesdess effekt på PDGF-D signalering in vitro. PDGF-D signaleringen förändradegenexpressionen av gener involverade i tumörutveckling och spridning, vilken kundeblockeras av tyrosinkinashämmaren imatinib. Det antyder att PDGF-D signalering kan vara enviktig faktor vid kolorektal cancer progression och ett potentiellt mål för behandling. Analysen av ett flertal inflammatoriska cytokiner visade en korrelation mellan högacytokinnivåer och ökad cancerspecifik och total dödlighet två år efter operation. Höga CCL1och CCL24 nivåer var de enda faktorerna som förblev signifikant associerade medcancerspecifik mortalitet vid fördjupad statistisk analys och bör studeras vidare.</p><p>Sammanfattningsvis presenterar denna avhandling cirkulerande och genetiska faktorersåsom CD93, PLA2G4C, PDGF-D, CCL1 and CCL24 som eventuellt är viktiga vid bedömning avkolorektal cancer progression tillsammans med TNM stadium.</p>
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3.
  • Berntorp, Erik, et al. (författare)
  • Centraliserad vård grundläggande i vårdprogram för blödarsjuka
  • 1999
  • Ingår i: Läkartidningen. - Swedish Medical Association. - 0023-7205. ; 96:15, s. 1849-1852
  • Tidskriftsartikel (refereegranskat)abstract
    • Haemophilia is a rare and potentially life-threatening disease. In Sweden, with a population of approximately 8.5 million, about 350 people suffer from the more severe forms of haemophilia or von Willebrand disease. Meticulous management is important if the patients are to be spared chronic disability and serious treatment complications. The disease is lifelong and affects psychosocial aspects of life among patients and their families. With the help of a grant from the Swedish Board of Halth and Welfare, a care programme has been designed to guarantee Swedish haemophiliacs comparable and optimal care. The programme has been drawn up by representatives of the three haemophilia centres in Sweden (at University Hospital, Malmo, Sahlgrenska University Hospital, Gothenburg, and Karolinska Hospital, Stockholm) in co-operation with the World Federation of National Haemophilia Organisations. To ensure optimal individual application of the programme, individualised management strategies and patient information leaflets have been prepared.
4.
  • Gulati, Sasha, et al. (författare)
  • Risk of intracranial hemorrhage in users of oral antithrombotic drugs: Study protocol for a nationwide study
  • 2015
  • Ingår i: F1000 Research. - 2046-1402. ; 4
  • Tidskriftsartikel (refereegranskat)abstract
    • Background A wide range of antithrombotic medications can be used in the prevention and treatment of thrombosis. Among hemorrhagic complications of antithrombotic drugs, intracranial hemorrhage may have particularly devastating consequences with high morbidity, disability and mortality rates. The incidence and risks of intracranial hemorrhage in patients on antithrombotic treatments from regular clinical practice outside clinical trials remain largely unknown. It is not known if results from clinical trials can be extrapolated to everyday clinical practice. We will conduct a nationwide study to investigate the risks and incidence rates of intracranial hemorrhage in users oral antithrombotic drugs in Norway from 2008 through 2014. Methods and design The aim of this nationwide study is to investigate the incidence rates of intracranial hemorrhage requiring hospitalization in users of oral antithrombotic drugs. The study will be conducted within the approximately 4.7 million inhabitants of Norway from January 1st, 2008, to December 31st, 2014. Treatment and outcome data are obtained from the Norwegian patient registry and the Norwegian prescription database.
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5.
  • Lewerin, Catharina, 1961-, et al. (författare)
  • Low holotranscobalamin and cobalamins predict incident fractures in elderly men: the MrOS Sweden Study
  • 2014
  • Ingår i: Osteoporosis International. - 0937-941X .- 1433-2965. ; 25:1, s. 131-40
  • Tidskriftsartikel (refereegranskat)abstract
    • In a population-based study on cobalamin status and incident fractures in elderly men (n = 790) with an average follow-up of 5.9 years, we found that low levels of metabolically active and total cobalamins predict incident fractures, independently of body mass index (BMI), bone mineral density (BMD), plasma total homocysteine (tHcy), and cystatin C. INTRODUCTION: Cobalamin deficiency in elderlies may affect bone metabolism. This study aims to determine whether serum cobalamins or holotranscobalamin (holoTC; the metabolic active cobalamin) predict incident fractures in old men. METHODS: Men participating in the Gothenburg part of the population-based Osteoporotic Fractures in Men (MrOS) Sweden cohort and without ongoing vitamin B medication were included in the present study (n = 790; age range, 70-81 years). RESULTS: During an average follow-up of 5.9 years, 110 men sustained X-ray-verified fractures including 45 men with clinical vertebral fractures. The risk of fracture (adjusted for age, smoking, BMI, BMD, falls, prevalent fracture, tHcy, cystatin C, 25-OH-vitamin D, intake of calcium, and physical activity (fully adjusted)), increased per each standard deviation decrease in cobalamins (hazard ratio (HR), 1.38; 95% confidence intervals (CI), 1.11-1.72) and holoTC (HR, 1.26; 95% CI, 1.03-1.54), respectively. Men in the lowest quartile of cobalamins and holoTC (fully adjusted) had an increased risk of all fracture (cobalamins, HR = 1.67 (95% CI, 1.06-2.62); holoTC, HR = 1.74 (95% CI, 1.12-2.69)) compared with quartiles 2-4. No associations between folate or tHcy and incident fractures were seen. CONCLUSIONS: We present novel data showing that low levels of holoTC and cobalamins predicting incident fracture in elderly men. This association remained after adjustment for BMI, BMD, tHcy, and cystatin C. However, any causal relationship between low cobalamin status and fractures should be explored in a prospective treatment study.
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6.
  • Wennergren, Göran, 1947- (författare)
  • Medicinarminnen som fängslar
  • 2019
  • Ingår i: Läkartidningen. - 0023-7205.
  • Recension (övrigt vetenskapligt)
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7.
  • Hedbrant, Johan, 1959-, et al. (författare)
  • Ny mätmetod för käkmuskulaturen kan finna orsaken till tinnitus Slutrapport Nutek 92-11904
  • 1997
  • Ingår i: Nutek 92-11904. - Stockholm : Nutek - Närings- och teknikutvecklingsverket.
  • Rapport (övrigt vetenskapligt)abstract
    • <p>Tinnitus är en åkomma som i lindrigare eller allvarligare former drabbar 17% av västvärldens befolkning. Ca 85 000 svenskar har tinnitus på invalidiserande nivå. Förutom mänskligt lidande orsakar tinnitus samhällskostnader på ca 1.5 miljard kr årligen. Orsaken är till största delen okänd.</p><p>Vissa tecken tyder på ett samband mellan tinnitus och funktionsstörning i en käkmuskel. Några olika icke–invasiva metoder för mätning av muskelstörning i M Pterygoideus Lateralis har utvärderas. Två av dessa är intressanta för fortsatta studier.</p><p>Termografi användes för att diagnosticera muskelstörningar på ytligt liggande muskler. Vi såg åtskilliga varma områden på ytliga käk– och nackmuskler på de patienter som hade käkledsstörningar, samt möjligen tecken på onormal värme från M Pterygoideus Lateralis. Mätförhållandena var dock ej ideala.</p><p>En metod att mäta EMG med adaptiv noise cancelling provades. EMG från en ryggmuskel, stört av en “EKG–signal” från hjärtat användes. Metoden fungerade bra. Fortsatt metodutveckling på t.ex. ryggmuskler borde göras.</p>
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8.
  • Li, X. Y., et al. (författare)
  • Classification of clear cell renal cell carcinoma based on PKM alternative splicing
  • 2020
  • Ingår i: Heliyon. - 2405-8440. ; 6:2
  • Tidskriftsartikel (refereegranskat)abstract
    • Clear cell renal cell carcinoma (ccRCC) accounts for 70–80% of kidney cancer diagnoses and displays high molecular and histologic heterogeneity. Hence, it is necessary to reveal the underlying molecular mechanisms involved in progression of ccRCC to better stratify the patients and design effective treatment strategies. Here, we analyzed the survival outcome of ccRCC patients as a consequence of the differential expression of four transcript isoforms of the pyruvate kinase muscle type (PKM). We first extracted a classification biomarker consisting of eight gene pairs whose within-sample relative expression orderings (REOs) could be used to robustly classify the patients into two groups with distinct molecular characteristics and survival outcomes. Next, we validated our findings in a validation cohort and an independent Japanese ccRCC cohort. We finally performed drug repositioning analysis based on transcriptomic expression profiles of drug-perturbed cancer cell lines and proposed that paracetamol, nizatidine, dimethadione and conessine can be repurposed to treat the patients in one of the subtype of ccRCC whereas chenodeoxycholic acid, fenoterol and hexylcaine can be repurposed to treat the patients in the other subtype.
9.
  • Sandström, Göran, et al. (författare)
  • Increased Level of Serum Hepcidin in Female Adolescent Athletes.
  • 2018
  • Ingår i: Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine. - 1536-3724. ; 28:2, s. 180-183
  • Tidskriftsartikel (refereegranskat)abstract
    • To determine the serum hepcidin concentration and standard hematological parameters in a group of female adolescent athletes, compared with a group of nonathlete females.A case-control study.A senior high school for athletes in Gothenburg, Sweden.All female athletes (70), at the school were offered to take part. Fifty-six athletes accepted. From a random sample of age-matched nonathletes, 71 students were recruited to the control group.Iron deficiency (ID) was determined by levels of serum iron, total iron-binding capacity, transferrin saturation (TS), and ferritin. Serum hepcidin was determined by a mass spectrometry method. All samples were taken at least 12 hours after training.The main result was the finding of a significantly elevated serum hepcidin level in the athlete group, 4.7 nmol/L compared with 3.3 nmol/L (P < 0.001) in the nonathlete group. In the athlete group, the serum iron concentration was significantly lower, 14.0 μmol/L compared with 17.6 μmol/L (P = 0.003) in the nonathlete group. No difference was found regarding TS, total iron binding capacity, and ferritin. There was no difference in the occurrence of ID or iron deficiency anaemia (IDA).These findings show an increase in serum hepcidin in a large group of female athletes. The elevated hepcidin levels may affect the iron balance of the athletes, adding to the traditional explanation of dietary intake/iron loss balance.
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10.
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