7 research outputs found
ΠΠΠΠ’ΠΠΠΠΠΠΠΠΠ― Π Π‘ΠΠΠ ΠΠΠΠΠΠ«Π₯ ΠΠΠΠΠΠ-ΠΠΠΠΠΠΠΠ§ΠΠ‘ΠΠΠ₯ ΠΠ‘Π‘ΠΠΠΠΠΠΠΠΠ―Π₯
An overview of the present status and prospects of gnotobiology along with a role of normal microflora studied using laboratory animals with controlled microflora (gnotobiotes) is presented. The principal elements of gnotobiotechnology as well as possibilities of its using in both experimental and clinical investigations are analyzed. A multifaceted role of normal microflora in the host physiology and pathology prejudge the increasing importance of gnotiological models in various fields of biology and medicine, such as the development of new generations probiotics. An assessment and characteristics of selected microbial strains, host-microbe interactions etc. An organization of further complex gnotobiotic research is of prospective value.Β Π ΠΎΠ±Π·ΠΎΡΠ΅ ΠΎΡΠ²Π΅ΡΠ΅Π½ΠΎ ΡΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΠ΅ ΡΠΎΡΡΠΎΡΠ½ΠΈΠ΅ ΠΈ ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Ρ Π³Π½ΠΎΡΠΎΠ±ΠΈΠΎΠ»ΠΎΠ³ΠΈΠΈ ΠΈ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ ΡΠΎΠ»ΠΈ Π½ΠΎΡΠΌΠ°Π»ΡΠ½ΠΎΠΉ ΠΌΠΈΠΊΡΠΎΡΠ»ΠΎΡΡ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠΎΠ² Ρ Π»Π°Π±ΠΎΡΠ°ΡΠΎΡΠ½ΡΠΌΠΈ ΠΆΠΈΠ²ΠΎΡΠ½ΡΠΌΠΈ Ρ ΠΊΠΎΠ½ΡΡΠΎΠ»ΠΈΡΡΠ΅ΠΌΠΎΠΉ ΠΌΠΈΠΊΡΠΎΡΠ»ΠΎΡΠΎΠΉ (Π³Π½ΠΎΡΠΎΠ±ΠΈΠΎΡΠ°ΠΌΠΈ). Π Π°ΡΡΠΌΠΎΡΡΠ΅Π½Ρ ΠΎΡΠ½ΠΎΠ²Π½ΡΠ΅ ΡΠ»Π΅ΠΌΠ΅Π½ΡΡ Π³Π½ΠΎΡΠΎΠ±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ ΠΈ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΠΈ Π΅Π΅ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ Π² ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΡΡ
ΠΈ ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡΡ
. ΠΠΎΠΊΠ°Π·Π°Π½Π° ΠΌΠ½ΠΎΠ³ΠΎΠ³ΡΠ°Π½Π½Π°Ρ ΡΠΎΠ»Ρ Π½ΠΎΡΠΌΠ°Π»ΡΠ½ΠΎΠΉ ΠΌΠΈΠΊΡΠΎΡΠ»ΠΎΡΡ Π² ΡΠΈΠ·ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ΅Π°ΠΊΡΠΈΡΡ
ΠΈ ΠΏΡΠΈ ΠΏΠ°ΡΠΎΠ»ΠΎΠ³ΠΈΠΈ ΠΌΠ°ΠΊΡΠΎΠΎΡΠ³Π°Π½ΠΈΠ·ΠΌΠ°, ΠΏΡΠ΅Π΄ΠΎΠΏΡΠ΅Π΄Π΅Π»ΡΡΡΠ°Ρ Π·Π½Π°ΡΠ΅Π½ΠΈΠ΅ Π³Π½ΠΎΡΠΎΠ±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΌΠΎΠ΄Π΅Π»Π΅ΠΉ Π² ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
ΠΎΠ±Π»Π°ΡΡΡΡ
ΠΌΠ΅Π΄ΠΈΡΠΈΠ½Ρ ΠΈ Π±ΠΈΠΎΠ»ΠΎΠ³ΠΈΠΈ, Π² ΡΠ°ΡΡΠ½ΠΎΡΡΠΈ, ΠΏΡΠΈ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠ΅ ΠΈ ΠΈΠ·ΡΡΠ΅Π½ΠΈΠΈ ΠΏΡΠΎΠ±ΠΈΠΎΡΠΈΠΊΠΎΠ² Π½ΠΎΠ²ΠΎΠ³ΠΎ ΠΏΠΎΠΊΠΎΠ»Π΅Π½ΠΈΡ, ΠΏΡΠΈ ΠΎΡΠ΅Π½ΠΊΠ΅ ΠΈ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠ΅ Π²ΡΠ΄Π΅Π»Π΅Π½Π½ΡΡ
ΡΡΠ°ΠΌΠΌΠΎΠ² ΠΈ ΠΏΡΠΈ ΠΈΠ·ΡΡΠ΅Π½ΠΈΠΈ ΠΈΡ
Π²Π·Π°ΠΈΠΌΠΎΠ΄Π΅ΠΉΡΡΠ²ΠΈΡ Ρ Π΄ΡΡΠ³ΠΈΠΌΠΈ ΠΏΡΠ΅Π΄ΡΡΠ°Π²ΠΈΡΠ΅Π»ΡΠΌΠΈ ΠΌΠΈΠΊΡΠΎΠ±ΠΈΠΎΡΡ. ΠΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½Π° ΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΡΠΈΡ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ½ΡΡ
Π³Π½ΠΎΡΠΎΠ±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ.
ΠΠ°ΠΊΡΠ΅ΡΠΈΠ°Π»ΡΠ½Π°Ρ ΡΡΠ°Π½ΡΠ»ΠΎΠΊΠ°ΡΠΈΡ ΠΈΠ· ΠΊΠΈΡΠ΅ΡΠ½ΠΈΠΊΠ°: ΠΌΠΈΠΊΡΠΎΠ±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠ΅, ΠΈΠΌΠΌΡΠ½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΈ ΠΏΠ°ΡΠΎΡΠΈΠ·ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠ΅ Π°ΡΠΏΠ΅ΠΊΡΡ
Bacterial translocation (BT) is both pathology and physiology phenomenon. In healthy newborns it accompanies the process of establishing the autochthonous intestinal microbiota and the host microbiome. In immunodeficiency it can be an aethio-pathogenetic link and a manifestation of infection or septic complications. The host colonization resistance to exogenous microbic colonizers is provided by gastrointestinal microbiota in concert with complex constitutional and adaptive defense mechanisms. BT may be result of barrier dysfunction and self-purification mechanisms involving the host myeloid cell phagocytic system and opsonins. Dynamic cell humoral response to microbial molecular patterns that occurs on the mucous membranes initiates receptor signaling pathways and cascade of reactions. Their vector and results are largely determined by cross-reactivity between microbiome and the host genome. Enterocyte barriers interacting with microbiota play leading role in providing adaptive, homeostatic and stress host reactivity. Microcirculatory ischemic tissue alterations and inflammatory reactions increase the intestinal barrier permeability and BT. These processes a well as mechanisms for apoptotic cells and bacteria clearance are justified to be of prospective research interest. The inflammatory and related diseases caused by alteration and dysfunction of the intestinal barrier are reasonably considered as diseases of single origin. Maternal microbiota affects the formation of the innate immune system and the microbiota of the newborn, including intestinal commensal translocation during lactation. Deeper understanding of intestinal barrier mechanisms needs complex microbiological, immunological, pathophysiological, etc. investigations using adequate biomodels, including gnotobiotic animals.ΠΠ°ΠΊΡΠ΅ΡΠΈΠ°Π»ΡΠ½Π°Ρ ΡΡΠ°Π½ΡΠ»ΠΎΠΊΠ°ΡΠΈΡ (ΠΠ’) ΠΈΠ· ΠΊΠΈΡΠ΅ΡΠ½ΠΈΠΊΠ° ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»ΡΠ΅Ρ ΠΏΠ°ΡΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΠΈ ΡΠΈΠ·ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΡΠ²Π»Π΅Π½ΠΈΠ΅. ΠΠ’ Π½Π°Π±Π»ΡΠ΄Π°Π΅ΡΡΡ Π² ΠΏΡΠΎΡΠ΅ΡΡΠ΅ ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΈΡ Π°ΡΡΠΎΡ
ΡΠΎΠ½Π½ΠΎΠΉ ΠΊΠΈΡΠ΅ΡΠ½ΠΎΠΉ ΠΌΠΈΠΊΡΠΎΠ±ΠΈΠΎΡΡ ΠΈ ΠΌΠΈΠΊΡΠΎΠ±ΠΈΠΎΠΌΠ° Ρ
ΠΎΠ·ΡΠΈΠ½Π° ΠΏΡΠΈ Π²Π·Π°ΠΈΠΌΠΎΠ΄Π΅ΠΉΡΡΠ²ΠΈΠΈ Ρ ΠΊΠΎΠΌΠΌΠ΅Π½ΡΠ°Π»Π°ΠΌΠΈ, ΡΠΎΠΏΡΠΎΠ²ΠΎΠΆΠ΄Π°Ρ Π΅ΡΡΠ΅ΡΡΠ²Π΅Π½Π½ΡΠΉ ΠΈΠΌΠΌΡΠ½ΠΎΠ³Π΅Π½Π΅Π·, ΠΈ ΠΏΡΠΈ ΠΏΠ°ΡΠΎΠ»ΠΎΠ³ΠΈΠΈ (Π½Π°ΠΏΡΠΈΠΌΠ΅Ρ, ΠΈΠΌΠΌΡΠ½ΠΎΠ΄Π΅ΡΠΈΡΠΈΡΠ°Ρ
), ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»ΡΡ ΡΡΠΈΠΎΠΏΠ°ΡΠΎΠ³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΎΠ΅ Π·Π²Π΅Π½ΠΎ ΠΈΠ½ΡΠ΅ΠΊΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΏΡΠΎΡΠ΅ΡΡΠ° ΠΈ ΡΠ΅ΠΏΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΎΡΠ»ΠΎΠΆΠ½Π΅Π½ΠΈΠΉ. ΠΠ²ΠΎΠ»ΡΡΠΈΠΎΠ½Π½ΠΎ Π²ΡΡΠ°Π±ΠΎΡΠ°Π½Π½ΡΠ΅ ΠΌΠ΅Ρ
Π°Π½ΠΈΠ·ΠΌΡ Π²Π·Π°ΠΈΠΌΠΎΠ΄Π΅ΠΉΡΡΠ²ΠΈΡ Ρ
ΠΎΠ·ΡΠΈΠ½Π° ΠΈ ΠΌΠΈΠΊΡΠΎΠ±ΠΈΠΎΡΡ, Π²Π·Π°ΠΈΠΌΠ½ΠΎ ΠΏΡΠΎΡΠΈΠ²ΠΎΠΏΠΎΠ»ΠΎΠΆΠ½ΠΎΠΉ Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½Π½ΠΎΡΡΠΈ, ΠΎΠ±ΡΡΠ»ΠΎΠ²Π»Π΅Π½Ρ ΠΈΠ½Π²Π°Π·ΠΈΠΎΠ½Π½ΡΠΌΠΈ ΡΠ²ΠΎΠΉΡΡΠ²Π°ΠΌΠΈ ΠΌΠΈΠΊΡΠΎΠΎΡΠ³Π°Π½ΠΈΠ·ΠΌΠΎΠ² ΠΈ ΠΏΡΠΎΡΠΈΠ²ΠΎΡΡΠΎΡΡΠΈΠΌΠΈ ΠΈΠΌ Π·Π°ΡΠΈΡΠ½ΠΎ-Π±Π°ΡΡΠ΅ΡΠ½ΡΠΌΠΈ ΠΌΠ΅Ρ
Π°Π½ΠΈΠ·ΠΌΠ°ΠΌΠΈ Ρ
ΠΎΠ·ΡΠΈΠ½Π°. ΠΠΎΠ»ΠΎΠ½ΠΈΠ·Π°ΡΠΈΠΎΠ½Π½Π°Ρ ΡΠ΅Π·ΠΈΡΡΠ΅Π½ΡΠ½ΠΎΡΡΡ Ρ
ΠΎΠ·ΡΠΈΠ½Π°, ΠΊΠΎΠ½ΡΠ°ΠΊΡΠΈΡΡΡΡΠ΅Π³ΠΎ Ρ ΡΠΊΠ·ΠΎΠ³Π΅Π½Π½ΠΎΠΉ ΠΌΠΈΠΊΡΠΎΠ±ΠΈΠΎΡΠΎΠΉ, ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠΈΠ²Π°Π΅ΡΡΡ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠΎΠΌ ΠΊΠΎΠ½ΡΡΠΈΡΡΡΠΈΠΎΠ½Π°Π»ΡΠ½ΡΡ
ΠΈ Π°Π΄Π°ΠΏΡΠΈΠ²Π½ΡΡ
ΠΌΠ΅Ρ
Π°Π½ΠΈΠ·ΠΌΠΎΠ² Ρ Π²Π΅Π΄ΡΡΠΈΠΌ ΡΡΠ°ΡΡΠΈΠ΅ΠΌ ΠΊΠΎΠΌΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΠΎΠΉ ΠΌΠΈΠΊΡΠΎΠ±ΠΈΠΎΡΡ. ΠT Π² ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠ΅ Π΄ΠΈΡΡΡΠ½ΡΠΈΠΈ Π±Π°ΡΡΠ΅ΡΠΎΠ² ΠΊΠΎΠ½ΡΡΠΎΠ»ΠΈΡΡΠ΅ΡΡΡ ΠΌΠ΅Ρ
Π°Π½ΠΈΠ·ΠΌΠ°ΠΌΠΈ ΡΠ°ΠΌΠΎΠΎΡΠΈΡΠ΅Π½ΠΈΡ Ρ Π²ΠΎΠ²Π»Π΅ΡΠ΅Π½ΠΈΠ΅ΠΌ ΠΌΠΈΠ΅Π»ΠΎΠΈΠ΄Π½ΠΎΠΉ ΠΊΠ»Π΅ΡΠΎΡΠ½ΠΎΠΉ ΡΠ°Π³ΠΎΡΠΈΡΠ°ΡΠ½ΠΎΠΉ ΡΠΈΡΡΠ΅ΠΌΡ ΠΈ ΠΎΠΏΡΠΎΠ½ΠΈΠ½ΠΎΠ². ΠΠΎΠ·Π½ΠΈΠΊΠ°ΡΡΠ°Ρ Π½Π° ΡΠ»ΠΈΠ·ΠΈΡΡΡΡ
ΠΎΠ±ΠΎΠ»ΠΎΡΠΊΠ°Ρ
Π΄ΠΈΠ½Π°ΠΌΠΈΡΠ½ΠΎ ΡΠ°Π·Π²ΠΈΠ²Π°ΡΡΠ°ΡΡΡ ΠΊΠ»Π΅ΡΠΎΡΠ½ΠΎ-Π³ΡΠΌΠΎΡΠ°Π»ΡΠ½Π°Ρ ΡΠ΅Π°ΠΊΡΠΈΡ Π½Π° ΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½ΡΠ΅ ΠΌΠΈΠΊΡΠΎΠ±Π½ΡΠ΅ ΠΏΠ°ΡΡΠ΅ΡΠ½Ρ ΠΈΠ½ΠΈΡΠΈΠΈΡΡΠ΅Ρ ΡΠ΅ΡΠ΅ΠΏΡΠΎΡΠ½ΠΎ-ΡΠΈΠ³Π½Π°Π»ΡΠ½ΡΠ΅ ΠΈ ΠΊΠ°ΡΠΊΠ°Π΄Π½ΡΠ΅ ΡΠ΅Π°ΠΊΡΠΈΠΈ, Π²Π΅ΠΊΡΠΎΡ ΠΈ ΡΠ΅Π·ΡΠ»ΡΡΠ°Ρ ΠΊΠΎΡΠΎΡΡΡ
ΠΎΠΏΡΠ΅Π΄Π΅Π»ΡΡΡΡΡ ΠΏΠ΅ΡΠ΅ΠΊΡΠ΅ΡΡΠ½ΡΠΌ Π²Π·Π°ΠΈΠΌΠΎΠ΄Π΅ΠΉΡΡΠ²ΠΈΠ΅ΠΌ Π³Π΅Π½ΠΎΠΌΠ° ΠΈ ΠΌΠΈΠΊΡΠΎΠ±ΠΈΠΎΠΌΠ° Ρ
ΠΎΠ·ΡΠΈΠ½Π°. Π Π°ΡΡΠΌΠΎΡΡΠ΅Π½Π° ΡΠ»ΡΡΡΠ°ΡΡΡΡΠΊΡΡΡΠ° ΡΠ½ΡΠ΅ΡΠΎΡΠΈΡΠ°ΡΠ½ΡΡ
Π±Π°ΡΡΠ΅ΡΠΎΠ², Π²Π·Π°ΠΈΠΌΠΎΠ΄Π΅ΠΉΡΡΠ²ΡΡΡΠΈΡ
Ρ ΠΌΠΈΠΊΡΠΎΠ±ΠΈΠΎΡΠΎΠΉ (ΡΠΈΠΌΠ±ΠΈΠΎΠ½ΡΡ ΠΈ ΠΏΠ°ΡΠΎΠ±ΠΈΠΎΠ½ΡΡ), Π² ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠ΅Π½ΠΈΠΈ Π°Π΄Π°ΠΏΡΠ°ΡΠΈΠΎΠ½Π½ΠΎ-Π³ΠΎΠΌΠ΅ΠΎΡΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠ΅Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ Ρ
ΠΎΠ·ΡΠΈΠ½Π°. ΠΠ±ΠΎΡΠ½ΠΎΠ²Π°Π½Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΌΠΈΠΊΡΠΎΡΠΈΡΠΊΡΠ»ΡΡΠΎΡΠ½ΠΎΠ³ΠΎ Π·Π²Π΅Π½Π° Π² ΠΏΠ°ΡΠΎΠ³Π΅Π½Π΅Π·Π΅ ΠΈΡΠ΅ΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠΊΠ°Π½Π΅Π²ΡΡ
ΠΏΠΎΠ²ΡΠ΅ΠΆΠ΄Π΅Π½ΠΈΠΉ ΠΈ Π²ΠΎΡΠΏΠ°Π»Π΅Π½ΠΈΡ, ΠΏΠΎΠ²ΡΡΠ°ΡΡΠΈΡ
ΠΏΡΠΎΠ½ΠΈΡΠ°Π΅ΠΌΠΎΡΡΡ ΠΊΠΈΡΠ΅ΡΠ½ΠΎΠ³ΠΎ Π±Π°ΡΡΠ΅ΡΠ° ΠΈ ΠΠ’, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΌΠ΅Ρ
Π°Π½ΠΈΠ·ΠΌΠΎΠ² ΠΎΡΠΈΡΠ΅Π½ΠΈΡ ΠΎΡ Π±Π°ΠΊΡΠ΅ΡΠΈΠΉ ΠΈ Π°ΠΏΠΎΠΏΡΠΎΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΊΠ»Π΅ΡΠΎΠΊ. ΠΠΎΡΠΏΠ°Π»ΠΈΡΠ΅Π»ΡΠ½ΡΠ΅ ΠΈ Π΄ΡΡΠ³ΠΈΠ΅ Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΡ, Π½Π°ΠΏΡΡΠΌΡΡ ΡΠ²ΡΠ·Π°Π½Π½ΡΠ΅ Ρ Π±Π°ΡΡΠ΅ΡΠ½ΡΠΌΠΈ Π½Π°ΡΡΡΠ΅Π½ΠΈΡΠΌΠΈ ΠΊΠΈΡΠ΅ΡΠ½ΠΈΠΊΠ°, ΠΎΠ±ΠΎΡΠ½ΠΎΠ²Π°Π½Π½ΠΎ ΡΡΠΈΡΠ°ΡΡΡΡ Π±ΠΎΠ»Π΅Π·Π½ΡΠΌΠΈ ΠΊΠΈΡΠ΅ΡΠ½ΠΎΠ³ΠΎ Π±Π°ΡΡΠ΅ΡΠ°. ΠΠ°ΡΠ΅ΡΠΈΠ½ΡΠΊΠ°Ρ ΠΌΠΈΠΊΡΠΎΠ±ΠΈΠΎΡΠ° Π²Π»ΠΈΡΠ΅Ρ Π½Π° ΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ Π²ΡΠΎΠΆΠ΄Π΅Π½Π½ΠΎΠ³ΠΎ ΠΈΠΌΠΌΡΠ½ΠΈΡΠ΅ΡΠ° ΠΈ ΠΌΠΈΠΊΡΠΎΠ±ΠΈΠΎΡΡ Π½ΠΎΠ²ΠΎΡΠΎΠΆΠ΄Π΅Π½Π½ΠΎΠ³ΠΎ, Π² ΡΠΎΠΌ ΡΠΈΡΠ»Π΅ ΠΏΡΡΠ΅ΠΌ ΠΠ’ ΠΊΠΈΡΠ΅ΡΠ½ΡΡ
ΠΊΠΎΠΌΠΌΠ΅Π½ΡΠ°Π»ΠΎΠ² Ρ Π³ΡΡΠ΄Π½ΡΠΌ ΠΌΠΎΠ»ΠΎΠΊΠΎΠΌ. ΠΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½Ρ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ½ΡΠ΅ ΠΌΠΈΠΊΡΠΎΠ±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠ΅, ΠΈΠΌΠΌΡΠ½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠ΅, ΠΏΠ°ΡΠΎΡΠΈΠ·ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΈ Π΄ΡΡΠ³ΠΈΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ Π°Π΄Π΅ΠΊΠ²Π°ΡΠ½ΡΡ
Π±ΠΈΠΎΠΌΠΎΠ΄Π΅Π»Π΅ΠΉ, Π²ΠΊΠ»ΡΡΠ°Ρ Π³Π½ΠΎΡΠΎΠ±ΠΈΠΎΡΠΎΠ²
New Trichoderma harzianum Rifai F-180 - L-lysine-Ξ±-oxidase antitumor enzyme producer - culture liquid-based substance biotechnology
The biosynthesis of L-lysine-Ξ±-oxidase from Trichoderma harzianum Rifai F-180, an antitumor enzyme producer, was carried out on a wheat bran medium. Hydrophilic bases of lightly crosslinked acrylic polymers and methylcellulose derivatives were selected, and model samples were prepared with a 1% concentration of the culture liquid of the fungus. The wound healing activity of the obtained gel samples was investigated on an experimental model of guinea pig wounds. The results of experimental studies showed a high wound healing activity of the gel with a 1% concentration of the culture liquid of the fungus and can serve as a basis for further preclinical trials of this dosage form of wound healing action. Β© 2020 EManuscript Technologies. All rights reserved
Monoassociation with Lactobacillus acidophilus UFV-H2b20 stimulates the immune defense mechanisms of germfree mice
Probiotics are formulations containing live microorganisms or microbial stimulants that have some beneficial influence on the maintenance of a balanced intestinal microbiota and on the resistance to infections. The search for probiotics to be used in prevention or treatment of enteric infections, as an alternative to antibiotic therapy, has gained significant impulse in the last few years. Several studies have demonstrated the beneficial effects of lactic acid bacteria in controlling infection by intestinal pathogens and in boosting the host's nonspecific immune response. Here, we studied the use of Lactobacillus acidophilus UFV-H2b20, a lactic acid bacterium isolated from a human newborn from Viçosa, Minas Gerais, Brazil, as a probiotic. A suspension containing 108 cells of Lactobacillus acidophilus UFV-H2b20 was inoculated into groups of at least five conventional and germfree Swiss mice to determine its capacity to stimulate the host mononuclear phagocytic activity. We demonstrate that this strain can survive the stressing conditions of the intestinal tract in vivo. Moreover, the monoassociation of germfree mice with this strain for seven days improved the host's macrophage phagocytic capacity, as demonstrated by the clearance of a Gram-negative bacterium inoculated intravenously. Monoassociated mice showed an undetectable number of circulating E. coli, while 0.1% of the original inoculum was still present in germfree animals. Mice treated with viable or heat-killed Lactobacillus acidophilus UFV-H2b20 presented similarly improved clearance capacity when compared with germfree controls. In addition, monoassociated mice had twice the amount of Kupffer cells, which are responsible for the clearance of circulating bacteria, compared to germfree controls. These results suggest that the L. acidophilus strain used here stimulates a nonspecific immune response and is a strong candidate to be used as a probiotic