D 2007

AhR-ZPROSTŘEDKOVANÁ AKTIVITA HUMINOVÝCH LÁTEK A JEJICH FOTODEGRADAČNÍCH PRODUKTŮ

BITTNER, Michal, Klára HILSCHEROVÁ and John, P. GIESY

Basic information

Original name

AhR-ZPROSTŘEDKOVANÁ AKTIVITA HUMINOVÝCH LÁTEK A JEJICH FOTODEGRADAČNÍCH PRODUKTŮ

Name (in English)

AhR-MEDIATED ACTIVITY OF HUMIC SUBSTANCES AND THEIR PHOTO-DEGRADATION PRODUCTS

Authors

BITTNER, Michal (203 Czech Republic, guarantor), Klára HILSCHEROVÁ (203 Czech Republic) and John, P. GIESY (840 United States of America)

Edition

Vodňany, Bulletin VÚRH Vodňany, p. 17-22, 6 pp. 2007

Publisher

Jihočeská univerzita v Českých Budějovicích, Výzkumný ústav rybářský a hydrobiologický ve Vodňanech

Other information

Language

Czech

Type of outcome

Stať ve sborníku

Field of Study

10511 Environmental sciences

Country of publisher

Czech Republic

Confidentiality degree

není předmětem státního či obchodního tajemství

RIV identification code

RIV/00216224:14310/07:00029090

Organization unit

Faculty of Science

ISSN

Keywords in English

Humic Substances; Irradiation; AhR-mediated activity
Změněno: 27/8/2008 16:05, RNDr. Mgr. Michal Bittner, Ph.D.

Abstract

V originále

Humic substances (HS) are ubiquitous in the environment - they constitute the major components of dissolved organic matter in waters and the major part of materials that comprise soil organic matter. However, some studies indicate that HS can induce a direct adverse effect on human health and hormone-like effects on fish, amphibians and invertebrates. HS molecules contain number of aromatic rings and conjugated double bonds - the so called chromophores. That implies irradiation of dissolved HS can lead to a series of photochemical reactions which can act on the HS itself, or on other substances present in aquatic environment along with HS such as e.g. xenobiotics. In this contribution, we summarize our new findings on alteration of AhR-mediated activity of irradiated HS under the lab conditions. Additionally, supposed mechanisms of observed irradiation-induced decrease in AhR-mediated activity of dissolved HS are discussed.

In English

Humic substances (HS) are ubiquitous in the environment - they constitute the major components of dissolved organic matter in waters and the major part of materials that comprise soil organic matter. However, some studies indicate that HS can induce a direct adverse effect on human health and hormone-like effects on fish, amphibians and invertebrates. HS molecules contain number of aromatic rings and conjugated double bonds - the so called chromophores. That implies irradiation of dissolved HS can lead to a series of photochemical reactions which can act on the HS itself, or on other substances present in aquatic environment along with HS such as e.g. xenobiotics. In this contribution, we summarize our new findings on alteration of AhR-mediated activity of irradiated HS under the lab conditions. Additionally, supposed mechanisms of observed irradiation-induced decrease in AhR-mediated activity of dissolved HS are discussed.

Links

GP525/05/P160, research and development project
Name: In vitro modely pro studium endokrinní disrupce - účinky tradičních a nových typů persistentních organických polutantů
Investor: Czech Science Foundation, In vitro models for study of endocrine disruption - effects of traditional and new types of persistent organic pollutants
MSM0021622412, plan (intention)
Name: Interakce mezi chemickými látkami, prostředím a biologickými systémy a jejich důsledky na globální, regionální a lokální úrovni (INCHEMBIOL) (Acronym: INCHEMBIOL)
Investor: Ministry of Education, Youth and Sports of the CR, Interactions among the chemicals, environment and biological systems and their consequences on the global, regional and local scales (INCHEMBIOL)