Evaluation of the effect of retrograde intrarenal surgery with myo-inositol oxygenase

Objective: To investigate the effect of retrograde intra-renal surgery [RIRS] on kidneys using the myoinositol oxygenase [MIOX] enzyme. MIOX is a renal tubular-specific novel marker for the early diagnosis of acute kidney injury

Methods: A total of twenty seven individuals that had undergone RIRS to treat kidney stones were included in the study. Biochemical tests were performed on serum samples collected immediately before RIRS [hour 0] and at the 6th and 24th hours after the surgery

Results: The creatinine value at hour 6 was lower than the baseline [hour 0] value [p = 0.0305]. Cystatin C at hour 6 was lower than the value measured at hour 24 [p = 0.0142]. Similarly, MIOX was lower at hour 6 compared to hour 24 [p = 0.0214]. MIOX/creatinine at hour 6 was lower than the value calculated at hour 24 [p = 0.0348]. The basal values of MIOX and creatinine were found to have a positive correlation [correlation coefficient r = 0.5946, p = 0.0035]

Conclusions: Similar to the serum creatinine, the serum MIOX level provides information about kidney functions. RIRS was confirmed to be a safe procedure for the treatment of acute kidney injury with no negative effects on the kidneys

Importancia de alteracoes do ciclo intracelular do fosfoinositol na fisiopatologia do disturbio bipolar: estudos preliminares em modelos plaquetarios / Importance of intracellular cycle alterations of phosphatidylinositols in bipolar disorder physiopathology: blood platelet models: preliminary studies

O ciclo intracelular do fosfoinositol (PI) e uma via de segundos mensageiros que pode estar desregulada em pacientes com disturbio bipolar. Essa hipotese tem sido investigada em alguns laboratorios com o uso de modelos plaquetarios, celulas sanguineas ou tecidos cerebrais de autopsia. Recentemente novos dados tem sido publicados sugerindo um aumento dos niveis ou da atividade de alguns intermediarios desta via em pacientes com disturbio bipolar; relatos de aumento da atividade da proteina quinase C (PKC) em pacientes nao medicados na fase maniaca e aumento da liberacao de Ca++ intracelular, em conjunto com achados de aumento do conteudo de fosfoinositois na membrana, sao condizentes com a hipotese de uma hiperfuncao do ciclo intracelular do PI nesse disturbio...