The functional and molecular studies on involvement of hydrogen sulphide in myometrial activity of non-pregnant buffaloes (Bubalus bubalis).
BMC Vet Res
; 13(1): 379, 2017 Dec 06.
Article
en En
| MEDLINE
| ID: mdl-29207994
BACKGROUND: Hydrogen sulphide (H2S), a member of the gasotransmitters family, is known to play patho-physiological role in different body systems including during pregnancy. But its involvement in myometrial spontaneity and associated signalling pathways in uterus in non-pregnant animals is yet to be studied. Present study describes the effect of L-cysteine, an endogenous H2S donor, on isolated myometrial strips of non-pregnant buffaloes and the underlying signaling mechanism(s). RESULTS: L-cysteine (10 nM-30 mM) produced concentration-dependent contractile effect on buffalo myometrium which was extracellular Ca2+ and L-type calcium channels-dependent. Significant rightward shift of dose-response curve of L-cysteine was observed with significant decrease in maxima in the presence of amino-oxyacetic acid (AOAA; 100 µM) and d, l-propargylglycine (PAG; 100 µM), the specific blockers of cystathionine ß-synthase (CBS) and cystathionine γ-lyase (CSE), respectively. Existence of CBS enzyme of 63 kDa and CSE of 45 kDa molecular weights was confirmed by western blot using specific antibodies and also by immunohistochemistry. CONCLUSIONS: Endogenous H2S along with its biosynthetic enzymes (CBS and CSE) is evidently present in uteri of non-pregnant buffaloes and it regulates spontaneity in uteri of non-pregnant buffaloes and this effect is dependent on extracellular Ca2+ influx through nifedipine-sensitive L-type calcium channels. Thus H2S-signalling pathway may be a potential target to alter the uterine activities in physiology and patho-physiolgical states.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Búfalos
/
Sulfuro de Hidrógeno
/
Miometrio
Límite:
Animals
Idioma:
En
Revista:
BMC Vet Res
Asunto de la revista:
MEDICINA VETERINARIA
Año:
2017
Tipo del documento:
Article
País de afiliación:
India
Pais de publicación:
Reino Unido