[The intracellular increase of ionized calcium depends on factors present in the blood of patient with preeclampsia].
In previous works our group has demonstrated that intracellular concentration of calcium ionized is greater in patients with pre-eclampsia than in normotense pregnant patients, and that these figures correlate with arterial pressure. Both indicators become normal six weeks after delivery. With the idea of searching the possible participation of soluble factors in the plasma, in increasing free, intracellular calcium, eight pre-eclamptic patients, were studied; the patients were diagnosed by the criteria of the American College of Gynecologists and Obstetricians. As a control group, eight normotense pregnant patients, were included; they were paired by age, chronological and gestational. To measure transmembrane calcium flow, platelets from healthy males, were used. The platelets were incubated during 0, 15, 30 and 60 minutes in sera of pre-eclamptic patients, or of normotensive pregnant patients, marked with Ca. The differences in calcium transportation, were evaluated with variance analysis of Kruskall Wallis. Calcium transportation was greater when the platelets were incubated in pre-eclamptic patients sera, Md = 1.475 +/- 0.311 nanomoles than when were incubated in normotensive women sera, Md = 0.9725 +/- 0.58 nanomoles, p < 0.02. This finding suggests that in pre-eclamptic patients serum, exists some factor that facilitates the entrance of calcium to the cell, that provokes an increase in free calcium concentration, and it participates in the gestational hypertension.
Pereyra
A
A
Instituto Mexicano del seguro Social.
Amato
D
D
Ramos
C
C
Karchmer
S
S
D000328:Adult; D001792:Blood Platelets / Q000378:metabolism; D001794:Blood Pressure; D002118:Calcium / Q000378:metabolism*; D015220:Calcium Channels / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D011225:Pre-Eclampsia / Q000097:blood*; D011247:Pregnancy; D011263:Pregnancy Trimester, Third
D015220:Calcium Channels; D002118:Calcium