Abstract:
:The concentration of nitric oxide (NO) in exhaled air is increased in patients with asthma, suggesting that measuring fractional exhaled NO concentration (FE(NO)) may be used to monitor asthmatic airway inflammation. However, increased FE(NO) is not specific for asthma, as other inflammatory lung diseases may also increase FE(NO). To augment the specificity of FE(NO) measurement, we tested a novel theoretical modelling of pulmonary NO dynamics that allows the approximation of alveolar NO concentration and bronchial NO flux separately by measuring FE(NO) at several exhalation flow rates. We measured FE(NO) at four exhalation flow rates in 10 steroid-naive asthmatics, 5 patients with extrinsic allergic alveolitis, and in 10 healthy controls. Both the asthmatics and the patients with alveolitis had significantly higher FE(NO) than the healthy controls. The increased NO concentration originated from the bronchial level in the asthmatics and from the alveolar level in the patients with alveolitis. In the second part of the study we assessed the repeatability of FE(NO) test, within-day and day-to-day (during two weeks) variation in FE(NO), and the effects of mouth pressure and cigarette smoking on FE(NO) in healthy volunteers. Repeatability of 10 subsequent measurements was high (coefficient of variation (CV) 4.6% +/- 0.4%), and no diurnal variation was found. The day-to-day variation during a 2-week period gave a CV of 10.6% +/- 1.0%. The magnitude of mouth pressure (5-20 cmH2O in adults, 5-40 cmH2O in children) during measurement had no effect on FE(NO). Smoking a cigarette caused a small and transient but statistically significant increase in FE(NO) at 1 and 5 min after smoking. In conclusion, FE(NO) measurement is highly repeatable with low day-to-day variation among healthy subjects. Our results also suggest that the present novel method of measuring FE(NO) at several exhalation flow rates can be used to approximate alveolar and bronchial contributions to FE(NO) separately and thus increase the clinical value of this test.
journal_name
Ann Medjournal_title
Annals of medicineauthors
Lehtimäki L,Turjanmaa V,Kankaanranta H,Saarelainen S,Hahtola P,Moilanen Edoi
10.3109/07853890008995949subject
Has Abstractpub_date
2000-09-01 00:00:00pages
417-23issue
6eissn
0785-3890issn
1365-2060journal_volume
32pub_type
杂志文章abstract::Several lines of evidence suggest that abnormal brain serotonin metabolism may occur in early onset, type 2 alcoholism in men. Low cerebrospinal fluid 5-hydroxy-indoleacetic acid concentration has been found to be associated with a history of paternal alcoholism, and abnormal oral glucose tolerance tests (tendency to ...
journal_title:Annals of medicine
pub_type: 杂志文章,评审
doi:10.3109/07853899009147915
更新日期:1990-01-01 00:00:00
abstract:BACKGROUND AIMS:A mild increase in liver enzyme levels is sometimes observed in patients with diabetic ketosis or ketoacidosis. The aim of the present study was to assess the cause and prevalence of the elevation of liver transaminase levels in fulminant and acute-onset type 1 diabetic patients experiencing diabetic ke...
journal_title:Annals of medicine
pub_type: 杂志文章
doi:10.1080/07853890802032711
更新日期:2008-01-01 00:00:00
abstract::Antisense oligonucleotides represent a novel class of potential drugs for highly selective blocking of genes. The basic concept of antisense strategy is simple: an antisense molecule recognizes a complementary mRNA (or DNA) by sequence-specific base pairing, and hence prevents translation (or transcription), resulting...
journal_title:Annals of medicine
pub_type: 杂志文章,评审
doi:10.3109/07853899608999115
更新日期:1996-12-01 00:00:00
abstract::Depression, among other mood disorders, represents one of the most common health problems worldwide, with steadily increasing incidence and major socio-economic consequences. However, since the knowledge about the underlying pathophysiological principles is still very scanty, depression and other mood disorders are cu...
journal_title:Annals of medicine
pub_type: 杂志文章,评审
doi:10.3109/07853891003769957
更新日期:2010-05-06 00:00:00
abstract::The circadian clock generates oscillations in physiology and behavior, known as circadian rhythms. Links between the circadian clock genes Periods, Bmal1, and Cryptochromes and aging and cancer are emerging. Circadian clock gene expression is changed in human pathologies, and transgenic mice with mutations in clock ge...
journal_title:Annals of medicine
pub_type: 杂志文章,评审
doi:10.3109/07853890.2010.499134
更新日期:2010-09-01 00:00:00
abstract::More than 50 different pharmacological and mechanical interventions have been tested to date for prevention of vascular restenosis without success. Intracoronary radiotherapy is the first one showing promise of significantly attenuating neointimal proliferation, causing positive vascular remodelling and thus inhibitin...
journal_title:Annals of medicine
pub_type: 杂志文章,评审
doi:10.3109/07853890009002033
更新日期:2000-12-01 00:00:00
abstract::Circadian rhythms are a cardinal feature of living organisms. The stereotypical organization of homeostatic, endocrine and behavioural variables around the 24-hour cycle constitutes one of the most conserved attributes among species. It is now well established that circadian rhythmicity is not a learned behaviour, but...
journal_title:Annals of medicine
pub_type: 杂志文章,评审
doi:10.3109/07853899709002457
更新日期:1995-08-01 00:00:00
abstract::This is a brief overview of the cytokine network within juvenile chronic arthritis, introducing the concept of the production of T-helper 1 (TH-1) or TH2-cell differentiation as a result of cytokine production, as well as the concept of the balance between pro- and anti-inflammatory cytokines. The balance of TH1 and T...
journal_title:Annals of medicine
pub_type: 杂志文章,评审
doi:10.3109/07853899709113701
更新日期:1997-04-01 00:00:00
abstract::Steroids diffuse through polysiloxone at a constant rate, and steroids placed in the vagina rapidly pass through the vaginal epithelium into the circulation. Combining these principles led to the development of contraceptive vaginal rings (CVR) consisting of various progestins, with and without oestrogen, placed in fl...
journal_title:Annals of medicine
pub_type: 杂志文章,评审
doi:10.3109/07853899309164167
更新日期:1993-04-01 00:00:00
abstract::The purpose of this study was to test the applicability of exercise echocardiography in the diagnosis of coronary artery disease. The results were compared to findings of coronary angiography. 118 patients, 100 males and 18 females, who were all referred to coronary angiography for suspected ischaemic heart disease, u...
journal_title:Annals of medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.3109/07853899608999078
更新日期:1996-02-01 00:00:00
abstract:INTRODUCTION:We studied prevalence of hypovitaminosis D, its determinants, and whether achievement of recommended dietary vitamin D intake (10 μg/d) is associated with absence of hypovitaminosis D in adults. METHODS:The study is part of the Cardiovascular Risk in Young Finns Study. We collected serum samples of 25-hyd...
journal_title:Annals of medicine
pub_type: 杂志文章
doi:10.3109/07853890.2015.1020860
更新日期:2015-05-01 00:00:00
abstract::The risk of cardiovascular disease is markedly increased in patients with type 2 diabetes with a prevalence twice as high compared to the background population. With the recognition of multiple concomitant risk factors for both microvascular as well as cardiovascular disease in type 2 diabetic patients, treatment stra...
journal_title:Annals of medicine
pub_type: 杂志文章,评审
doi:10.1080/07853890410033612
更新日期:2004-01-01 00:00:00
abstract::Atrial fibrillation (AF) is the most prevalent arrhythmia and is associated with an increased risk of ischemic stroke (IS) and systemic embolism (SE). Stroke prevention is a key element for the overall management of AF patients. The non-vitamin K antagonist oral anticoagulants (NOACs), such as dabigatran, rivaroxaban,...
journal_title:Annals of medicine
pub_type: 杂志文章,评审
doi:10.1080/07853890.2018.1460489
更新日期:2018-06-01 00:00:00
abstract::Research in developing countries is essential for the evaluation of the safety, efficacy and acceptability of both new and already available contraceptives. Research conducted by scientists in developing countries has also played an essential role in the development of new contraceptives. The continuous delivery of pr...
journal_title:Annals of medicine
pub_type: 杂志文章
doi:10.3109/07853899309147858
更新日期:1993-02-01 00:00:00
abstract::Hypertrophic cardiomyopathy (HCM) is an autosomal dominant disease caused by mutations in sarcomeric proteins. It is characterized by left ventricular hypertrophy in the absence of an increased external load, and myofibrillar disarray. While hypertrophy is a common cardiac response to injury, disarray is the pathologi...
journal_title:Annals of medicine
pub_type: 杂志文章,评审
doi:
更新日期:1998-08-01 00:00:00
abstract:PURPOSE:Evidence on the association between depression, antidepressant use and venous thromboembolism (VTE) risk is conflicting. We conducted a systematic review and meta-analysis of published observational studies evaluating the associations of depression and antidepressant use with VTE risk. DESIGN:Eligible studies ...
journal_title:Annals of medicine
pub_type: 杂志文章,meta分析
doi:10.1080/07853890.2018.1500703
更新日期:2018-09-01 00:00:00
abstract::The recent identification of mutations in the RET proto-oncogene that are associated with multiple endocrine neoplasia type 2 (MEN 2) syndromes has allowed therapeutic intervention in affected individuals on the basis of direct genetic testing. The principal endocrine neoplasm that occurs in patients with the MEN 2 sy...
journal_title:Annals of medicine
pub_type: 杂志文章,评审
doi:10.3109/07853899608999099
更新日期:1996-10-01 00:00:00
abstract::Atrial fibrillation is a common cardiac arrhythmia with rapid and irregular atrial activity. Instead of uniformly contracting as one chamber, the atrial compartment fibrillates. Several studies have demonstrated that this arrhythmia contributes substantially to cardiac morbidity and mortality. The purpose of this revi...
journal_title:Annals of medicine
pub_type: 杂志文章,评审
doi:10.3109/07853890.2011.554426
更新日期:2011-01-01 00:00:00
abstract::In the aetiological diagnosis of pulmonary infections in patients affected by haematological malignancies we evaluated the utility of bronchoalveolar lavage (BAL). One hundred and twenty-seven BAL were performed in 119 patients. In our series, we identified the agent of pneumonia in 53.5% of episodes with the best res...
journal_title:Annals of medicine
pub_type: 杂志文章
doi:10.3109/07853899709007478
更新日期:1997-12-01 00:00:00
abstract:BACKGROUND:Adipose tissue (AT) is an important source of interleukin-1 receptor antagonist (IL-1Ra). Its expression is markedly increased in obesity. AIMS AND METHODS:To quantify the associations of IL-1Ra with body fat distribution as well as to examine the respective contributions of IL-1Ra and visceral adiposity to...
journal_title:Annals of medicine
pub_type: 杂志文章
doi:10.1080/07853890903022801
更新日期:2009-01-01 00:00:00
abstract::Cells with stem cell-like attributes, such as self-renewal and pluripotency, have been isolated from hematological malignancies and from several solid tumor types. Tumor-initiating cells, also referred to as cancer stem cells, are thought to be responsible for the initiation and growth of tumors. Like their normal cou...
journal_title:Annals of medicine
pub_type: 杂志文章,评审
doi:10.1080/07853890802021342
更新日期:2008-01-01 00:00:00
abstract::Among the approximately 7,000 cytogenetically abnormal childhood and adult B- and T-lineage acute lymphoblastic leukemias (ALL) published to date, numerous recurring chromosomal aberrations and abnormality patterns have been identified, and it has been clearly shown that the cytogenetic features often correlate closel...
journal_title:Annals of medicine
pub_type: 杂志文章,评审
doi:10.1080/07853890410018808
更新日期:2004-01-01 00:00:00
abstract::Abstract The limits of traditional anticoagulants, such as heparin and warfarin, have prompted the search for new agents for prophylaxis and treatment of arterial and venous thromboembolism, including factor Xa and thrombin inhibitors. These agents can be given orally, and their most significant advantage is that no l...
journal_title:Annals of medicine
pub_type: 杂志文章,评审
doi:10.3109/07853890.2010.539250
更新日期:2011-03-01 00:00:00
abstract:BACKGROUND:H+/K+-ATPase is the target autoantigen in autoimmune gastritis (AIG), an organ-specific autoimmune disease with a strong hereditary component. AIM:To detect possible polymorphisms in H+/K+-ATPase alpha- and beta-subunits in AIG patients. METHODS:Blood samples from 12 Finnish AIG patients were sequenced for...
journal_title:Annals of medicine
pub_type: 杂志文章
doi:10.1080/07853890600673260
更新日期:2006-01-01 00:00:00
abstract::Pulmonary arterial hypertension is a rapidly progressing disease characterized by an over- expression of endothelin. In addition to its potent pulmonary vasoconstrictor effects, endothelin has been shown to produce many of the aberrant changes, such as hypertrophy, fibrosis, inflammation, and neurohormonal activation ...
journal_title:Annals of medicine
pub_type: 杂志文章,评审
doi:10.1080/07853890310017477
更新日期:2003-01-01 00:00:00
abstract::There is increasing evidence that fasting hypertriglyceridaemia identifies individuals who are at increased risk for coronary artery disease. It is probable that this reflects the effects of the smaller triglyceride-bearing lipoproteins. It may also reflect increased levels of postprandial lipoproteins. There is consi...
journal_title:Annals of medicine
pub_type: 杂志文章,评审
doi:10.3109/07853899309147307
更新日期:1993-10-01 00:00:00
abstract::BACKGROUND. Non-steroidal anti-inflammatory drugs are associated with poor upper gastrointestinal (UGI) tolerability and increased ulcer risk, but patient adherence to gastroprotective co-therapy is frequently inadequate. A fixed-dose combination of enteric-coated naproxen 500 mg and immediate-release esomeprazole mag...
journal_title:Annals of medicine
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.3109/07853890.2011.625971
更新日期:2011-12-01 00:00:00
abstract::We investigated the association of systolic and diastolic blood pressure and hypertension with two different manifestations of carotid atherosclerosis in a random population sample of 1165 Eastern Finnish men aged 42, 48, 54 or 60 years, examined in the Kuopio Ischaemic Heart Disease Risk Factor Study. Carotid atheros...
journal_title:Annals of medicine
pub_type: 杂志文章
doi:10.3109/07853899109147926
更新日期:1991-02-01 00:00:00
abstract::Regenerative medicine is a multidisciplinary field utilizing the potential of stem cells and the regenerative capability of the body to restore, maintain, or enhance tissue and organ functions. Stem cells are unspecialized cells that can self-renew but also differentiate into several somatic cells when subjected the a...
journal_title:Annals of medicine
pub_type: 杂志文章,评审
doi:10.3109/07853890.2011.573805
更新日期:2012-11-01 00:00:00
abstract::Scleroderma or systemic sclerosis (SSc) is a complex disease in which the vasculopathy and the activation of the immune system with production of inflammatory mediators lead to dysregulated fibroblast activation. The resulting excessive deposition of collagens and other extracellular matrix proteins ends in fibrosis a...
journal_title:Annals of medicine
pub_type: 杂志文章,评审
doi:10.1080/07853890601098152
更新日期:2007-01-01 00:00:00