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Biomedical subjects

F Carrasco

Publications and source records attributed to F Carrasco.

24 records · Page 2Linked to original sources
PubMedDate not supplied

Effect of IR laser radiation on germ cell DNA content after one cycle of the seminiferous epithelium.

The effect of IR laser radiation on rat germ cells was investigated by cytophotometric quantification of the nuclear DNA content after a 15-day resting period. Two different doses of radiation energy were applied: 28.05 J/cm2 and 46.80 J/cm2. Both doses were found to increase the percentages of both spermatogonia with a 4c DNA content and primary spermatocytes with a > 4c DNA content. The elongating and elongated spermatids had a c DNA nuclear content, except for a small proportion (5%) of elongating cells that displayed a 2c DNA content at 28.05 J/cm2. Results revealed an increase in the germ cell DNA content after one cycle of the seminiferous epithelium after in vivo exposure to IR laser light. The laser sensitivity of the germ cells appeared to be related to their stage of differentiation and to the radiation energy applied, and the spermatogonia were the most sensitive. In all cases the lowest dosage induced the highest alteration.

Animals↗
PubMedDate not supplied

[The factors associated with noncompliance with antimalarial treatment in Ecuadorian patients].

A total of 249 persons living in the northwest part of Ecuador with a clinical diagnosis of malaria confirmed by thick blood films were treated with chloroquine and primaquine according to the therapeutical system in force in the National Service for Eradication of Malaria. New clinical assessment and thick blood film were applied after 4 days in P. falciparum (n = 120) cases and after 8 days in P. vivax (n = 129) cases; patients were questioned about the compliance or non-compliance with the treatment, and the reasons for their acting in either way were studied. EPI-INFO 6.04 and SPSS PC 7.0 packages served to process the information: "kind adjustment test" (bondad de ajuste) abd factorial analysis of correspondences were used. The patient who daily took his/her pills for the number of days indicated, at the established intervals and at the right time was defined as a patient complying with the drug therapy. For every 3 patients complying with treatment, there were 2 who did not; non-compliance was not significantly related to age, sex, educational level, ethnic group, urban or rural setting or level of income, but learning about seriousness of the infection did help to compliance with the therapy. The reasons for non-compliance were mainly associated with drugs (side effects/reluctancy to take drugs), with the fact of forgetting to take them and of "getting cured quickly". The profile of the patient who did not comply with treatment corresponded to male, teenager, mixed race, poor and rural setting.

Adolescent↗
PubMedDate not supplied

[Study of pregnancies in women with intrauterine devices of copper].

The authors analyze the intrauterine pregnancies observed in women with four different models of copper IUD. The study was made in a period of 54 months on 3216 insertions. The pregnancy index oscillated between 1.22 of the ML Cu-250 and 4.13 of the 7 Cu-200 (balanced percentage). The permanence of the IUD "in situ" in pregnant women increased the incidence of spontaneous abortions. The authors do not observe infections in pregnant women with the IUD, nor do they register malformations in the newborn.

Adolescent↗
PubMedDate not supplied

[Planning of pregnancy and birth control in the capital of Valladolid (author's transl)].

This work presents the results which the authors obtained by means of an inquiry carried out on 920 women with children, or women bearing their first child, in order to find out how many pregnancies are conceived deliberately in the capital of Valladolid and what kind of birth control was adopted by the couples in this capital in order to delay, postpone or prevent pregnancy. The authors come to the conclusion that, first, during the seventies a little less than 50% of the gestations in Valladolid were not planned or wanted. The first pregnancy is not planned in one out of four cases, of which nearly 50% are women under twenty years of age. The couples seek to control their reproduction once they have their first two children. From 30 years onward, seven out of ten pregnancies are neither planned nor wanted. Three quarters of the women investigated, or their husbands, use some method of birth control, normally of little efficacy, and this because of the method itself, or because of the deficient way they use it. "Coitus interruptus", alone or combined with other methods, is practised by two of three couples who seek to control their reproduction.

Adolescent↗
PubMedDate not supplied

[The relation between the viscosity of enteral nutrition products and delays or interruptions in the infusion rate selected].

Enteral nutrition infusion systems block or suffer alterations to the infusion rate selected at the pump, creating significant problems in the clinic. The manufacturers insist on the important of not using fine-bore catheters when products are viscous, but they provide no specific data correlating bore with maximum advisable viscosity. Experimental work was carried out in order to relate these variable and fix a pattern for selection of nutrients according to their physical properties and a particular catheter bore. The results of our study indicate that none of the products currently of the market for enteral nutrition creates problems with the selected infusion rate, nor blocking of a probe of minimum bore (6 CH). Thus the complications attributed to catheter bore or the physical characteristics of a product are attributable to the poor preparation of the product or improper handling or care of catheters and infusion systems.

Catheterization, Peripheral↗