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Biomedical subjects

K Niemi

Publications and source records attributed to K Niemi.

10 recordsLinked to original sources
PubMed2002

Personal health care services through digital television.

Personal health care has obtained increasing importance in the field of health care as the populations' age in the industrialised countries and resources available for health care remain limited. Personal health care through digital television is an exiting possibility in the realisation of new types of services answering to this demand for increased personal action and responsibility in health care. The possibilities of digital television in health care are studied in the Health Care Television (HCTV) research project of the Digital Media Institute at Tampere University of Technology. In this paper personal health care services are studied mainly from the perspective of the interactive service infrastructure of digital television. Firstly we present the general infrastructure of digital television and the different interactive service types of digital television. The usage of these service types in personal health care applications is also discussed. Finally, a web-based application based on chronic atrial fibrillation and its test use is presented. The application is used as a research platform for personal health care applications in digital television.

Anticoagulants↗
PubMed2002

Ectomycorrhizal fungi and exogenous auxins influence root and mycorrhiza formation of Scots pine hypocotyl cuttings in vitro.

We studied the ability of the ectomycorrhizal (ECM) fungi, Pisolithus tinctorius (Pers.) Coker and Couch and Paxillus involutus (Batsch) Fr. (Strain H), to produce indole-3-acetic acid (IAA) and to affect the formation and growth of roots on Scots pine (Pinus sylvestris L.) hypocotyl cuttings in vitro. Effects of indole-3-butyric acid (IBA) and the auxin transport inhibitor, 2,3,5-triiodobenzoic acid (TIBA), on rooting and the cutting-fungus interaction were also studied. Both fungi produced IAA in the absence of exogenous tryptophan, but the mycelium and culture filtrate of Pisolithus tinctorius contained higher concentrations of free and conjugated IAA than the mycelium and culture filtrate of Paxillus involutus. Inoculation with either fungus or short-term application of culture filtrate of either fungus to the base of hypocotyl cuttings enhanced root formation. Inoculation with either fungus was even more effective in enhancing root formation than treatment of the hypocotyl bases with IBA. Fungal IAA production was not directly correlated with root formation, because rooting was enhanced more by Paxillus involutus than by Pisolithus tinctorius. This suggests that, in addition to IAA, other fungal components play an important role in root formation. Treatment with 5 microM TIBA increased the rooting percentage of non-inoculated cuttings, as well as of cuttings inoculated with Pisolithus tinctorius, perhaps as a result of accumulation of IAA at the cutting base. However, the marked reduction in growth of Pisolithus tinctorius in the presence of TIBA suggests that the effects of TIBA on rooting are complicated and not solely related to IAA metabolism. The high IAA-producer, Pisolithus tinctorius, formed mycorrhizas, and the IBA treatment increased mycorrhizal frequency in this species, whereas TIBA decreased it. Paxillus involutus did not form mycorrhizas, indicating that a low concentration of IAA together with other fungal components were sufficient to stimulate formation and growth of the roots, but not the formation of ECM symbiosis.

Basidiomycota↗
PubMed2002

Effects of exogenous diamines on the interaction between ectomycorrhizal fungi and adventitious root formation in Scots pine in vitro.

Production of free and conjugated polyamines by two ectomycorrhizal fungi, Pisolithus tinctorius (Pers.) Coker and Couch and Paxillus involutus (Batsch) Fr., was studied in vitro. Spermidine was the main polyamine in the mycelium of both fungi. Paxillus involutus also produced large amounts of the diamine putrescine, whereas Pisolithus tinctorius contained traces of the diamine cadaverine and released into the culture medium an unknown compound probably related to cadaverine or N-methylputrescine. Both fungi accelerated adventitious root formation and increased subsequent root growth of Scots pine (Pinus sylvestris L.) hypocotyl cuttings in vitro. Exogenous cadaverine enhanced rooting caused by Pisolithus tinctorius and also promoted mycorrhiza formation by the fungus. Putrescine and Paxillus involutus had a synergistic effect on root initiation, but not on subsequent root growth. We conclude that specific diamines may be involved in the interaction between ectomycorrhizal fungi and adventitious root formation in Scots pine, and that the effects of specific exogenous polyamines are dependent on the fungal strain and its ability to produce these compounds. The finding that Paxillus involutus enhanced rooting and root growth without mycorrhiza formation indicates that fungal-induced rooting is not necessarily related to visible mycorrhiza formation.

Basidiomycota↗
PubMed1999

Tracking patients, tracking costs.

Some 18.5% of hospitals employ a nurse case manager in the emergency department (ED) to decrease unnecessary hospital admissions, and address insurance company concerns about excessive ED visits. Consultants expect this management trend to increase.

Case Management↗
PubMed1997

Integrating clinical and support process design for effective health services.

With increased capitation and managed care competition, health care systems must demonstrate effective health services with predictable costs, timing, transitions, and health outcomes. By involving patients, payers, and multiple providers, a health care system can design integrated clinical and support processes across the continuum for defined populations. The goals are lower costs, increased payer and patient satisfaction, and improved health status. This article shares examples and experiences from four health care systems that teamed with Premier, Inc., to design an integrated services sequence for defined populations.

Adult↗
PubMed1979

Anterior chamber haemorrhage in the newborn after spontaneous delivery. A case report.

A case report is presented of anterior chamber haemorrhage occurring in one eye in a newborn after spontaneous delivery. At the age of two weeks the anterior chamber was clear but the vitreous cloudy. At the age of five weeks the vitreous had also cleared. The infant's later development was normal and there were no disorders in the function of the eye.

Birth Injuries↗