Abstract The study was carried out to find the relation between subclinical endometritis (SCE) and postpartum (pp.) ovarian resumption as well as to evaluate serum and endometrial TNF-α, IL-8 and serum CRP in buffaloes with and without SCE. Thirty-nine pluriparous buffaloes at the 3rd (W3), 5th (W5) and 7th (W7) week pp. were involved in this experiment. The parity of the buffaloes ranged from 4 to 8 with an average 5.8±0.2. Subclinical endometritis was diagnosed by the percentage of polymorphonuclear cells (PMNs) in uterine cytology obtained from endometrial cytobrush at W5 and W7. The cut-off point of PMNs% in buffaloes for SCE was ≥ 6% at W5 or ≥ 4% at W7. According to PMNs%, buffaloes were divided into SCE group (n=27) and non-SCE group (n=12). Ovarian cyclicity was monitored by rectal palpation, ultrasonography and progesterone assay at W3, W5 and W7. Serum and endometrial TNF-α, IL-8 and serum CRP were estimated at W5 and W7. Buffaloes with SCE (55.6%) showed delayed ovarian activity as compared to non-SCE (16.7%) animals (P=0.036). Significant increase in serum cytokines and CRP levels were detected at W5 (P ˂0.05) and W7 (P <0.01) in SCE buffaloes as compared to non-SCE. Endometrial levels of cytokines were significantly (P ˂0.05) elevated in SCE buffaloes. Serum and endometrial cytokines showed significant positive correlation. Furthermore, levels of TNF-α, IL-8 and CRP exhibited significant positive correlation with PMNs%. In conclusion, SCE delayed postpartum ovarian cyclicity in buffaloes. Moreover, TNF-α, IL-8 and CRP assessments could be efficient tools in prediction of SCE in buffaloes.

Reaction of (Z)-4-((dmethylamino)methylene)-1-phenylpyrazolidine-3,5-dione (1) with different nucleophiles is described. Treatment of enaminone 1 with phenylhydrazine led to 3-oxo-W,2-diphenyl-2,3-dihydro-1H-pyrazole-4-carbohydrazide 7. New enaminone derivatives 2-6 and 12-14 were conveniently obtained in high yields via nucleophilic substitution of the dimethylamino group in enaminone 1 when reacted with o-aminophenol, o-aminothiophenol, ethanolamine, cysteamine hydrochloride, piperidine, morpholine, 2-aminopyridine and glycine. Reaction of enaminone 1 with diaza-nucleophiles, such as hydrazine hydrate, ethylenediamine and o-phenylenediamine, afforded the corresponding bis-enaminones 9-11. Anti-inflammatory and antimicrobial activities of some new products were evaluated. Compounds 1, 2, 4, 7, 12a, and 12b showed high anti-inflammatory activity compared with indomethacin as the reference, while the highest antimicrobial effect was observed in the case of compound 3.

Se describe la reacción de (Z)- 1-fenil-4-((dimetilamino) metilen)pirazolidin-3,5-diona (1) con diferentes nucleófilos. El tratamiento de la enaminona 1 con fenilhidrazina condujo a la N', 2-difenil-2,3-dihidro-3-oxo-1H-pirazol-4-carbohidrazida 7. Los nuevos derivados enaminónicos 2-6 y 12-14 se obtuvieron convenientemente en elevados rendimientos vía sustitución nucleofílica del grupo dimetilamino en la enaminona 1 cuando reaccionó con o-aminofenol, o-aminotiofenol, etanolamina, clorhidrato de cisteamina, piperidina, morfolina, 2-aminopiridina y glicina. La reacción de 1 con diaza-nucleófilos, tales como hidrato de hidrazina, etilendiamina y o-fenildiamina, proporcionó las bis-enaminonas correspondientes 9-11. Se evaluó la actividad anti-inflamatoria y antimicrobiana de algunos productos nuevos. Los compuestos 1, 2, 4, 7, 12a y 12b mostraron elevada actividad anti-inflamatoria en comparación a la indometacina como compuesto de referencia, mientras que se observó la más elevada actividad antimicrobiana para el compuesto 3.