Biomedical subjects

J C Martínez-Chéquer

Publications and source records attributed to J C Martínez-Chéquer.

6 recordsLinked to original sources

PubMed2000

[Comparative study between estradiol valerate combined with cyproterone acetate, and conjugated equine estrogens combined with medroxyprogesterone acetate as hormone replacement therapy in climacteric].

OBJECTIVE: To compare the effectiveness in the control of climacteric symptoms, the tolerability and the uterine bleeding pattern between two types of hormone replacement therapy. MATERIAL AND METHODS: 81 postmenopausal women between 40 and 60 years age with vasomotor symptoms were studied. Randomly it was administered: I. Conjugated equine estrogens (CEE)-Medroxyprogesterone acetate (MPA): 21 tablets with 0.625 mg of CEE and 10 tablets with 5 mg of MPA which were taken with the last ten tablets of CEE in each cycle (n = 3 7). II. E2V-CPA: 11 tablets with 2 mg of E2V and 10 tablets with 2 mg of E2V and 1 mg of CPA (n = 44). Each cycle comprised 28 days. The treatments were compared with squared Chi and Mann-Whitney U test. RESULTS: The hot flushes presence was significantly greater in the group with CEE-MPA (p < 0.03). Severe throbs at the end of the study had a trend to be more frequent in the group with EC-MPA (p < 0.06). At the end of the study there was a greater frequency of breast tenderness in the group with CEE-MPA (P = 0.009). CONCLUSIONS: Both treatments have good effectiveness, tolerability and same bleeding pattern. Only the frequency of hot flushes, the presence of severe throbs and breast tenderness were lower in the group with E2V-CPA, that makes this preparation an option that can have a better acceptance by the women.

Adult↗

PubMed1999

[Distribution of adipose tissue and insulin serum levels in women with gestational diabetes].

Obesity has been mentioned as a major risk factor to develop gestational diabetes mellitus (GDM). In this work the main purpose was to compare the distribution of body fat tissue and insulin serum levels in obese women suffering GDM. Twenty obese pregnant patients, ten with GDM and ten non-diabetic control subjects were selected. To define the body fat distribution the following anthropometric indexes were performed: subscapular/triceps skinfold index (STI) during pregnancy (24-28 weeks) and STI plus waist/hip ratio (WHR) in postpartum (6 weeks). The two obese groups were evaluated through an oral glucose tolerance test, taking blood at 0, 60, 120 and 180 minutes; after centrifugation glucose serum levels were measured immediately by the glucose oxidase technique and the rest of the sample was kept frozen at -20 degrees C until insulin determinations by radioimmunoassay. The ten patients with GDM presented upper body fat, segment distribution, while among those without GDM, only six had this last feature and four were found with lower body fat segment distribution (p < 0.047). Insulin serum levels in GDM group were higher than in women without GDM (p < 0.01). The STI during and after pregnancy correlated positively (r = 0.77, p < 0.00003) and also with WHR (r = 0.61, p < 0.0001). There was correlation between STI and WHR both measured in postpartum (r = 0.52, p < 0.0007).

Adipose Tissue↗

PubMed1998

Endometrial changes according to hormone replacement therapy schedule.

OBJECTIVE: The purpose of this study was to assess differences in endometrial thickness, ultrasonographic characteristics, and histological and bleeding patterns in two groups of women according to the type and length of hormone replacement therapy (HRT) administered. DESIGN: Twenty-seven women were divided into two groups. Group I received oral conjugated estrogens 0.625 mg/day for 21 days, plus chlormadinone 2 mg the last 12 days, for a median length of 6.5 months' time. Group II received oral conjugated estrogens 0.625 mg/day plus chlormadinone 1 mg/day, both continuous and uninterrupted (n = 13), for a median length of 3 months' time. Using transvaginal ultrasound, endometrial thickness, refringence, and the presence of liquid in the uterine cavity were analyzed. An endometrial biopsy was performed the same day and the histological and bleeding patterns were described. Statistical analysis was performed with Mann-Whitney U test, Fisher's exact test, and Spearman correlation coefficient. RESULTS: Results of these tests showed that liquid in the uterine cavity and secretory endometrium were frequently found in those with sequential schedule (Group I); regular uterine bleeding was also frequent in this group. Negative correlation coefficients were found in this group between duration of HRT and endometrial thickness and uterine bleeding patterns, and in the continuous schedule group, between the duration of HRT and uterine bleeding pattern. CONCLUSIONS: We conclude that endometrial and ultrasonographic changes depend on the type of HRT schedule and the duration of therapy.

Administration, Oral↗

PubMed1996

[Evaluation of ultrasonographic variables of the endometrium in relation with histopathologic findings in patients with postmenopausal uterine bleeding].

The purpose of this study was to determine the sensitivity, specificity, positive and negative predictive value of analyzed variables in the ultrasonographic endometrial study in patients with postmenopausal uterine bleeding. Nineteen women with postmenopausal uterine bleeding were studied, in all of them and in the same day a transvaginal ultrasound and endometrial biopsy were performed. It was observed that endometrial thickness median was 4 mm; most of the endometria were proliferative (n = 12), and a greater trend to obesity and upper segment fat distribution was found. Endometrial thickness, refringence and liquid on uterine cavity had a sensitivity and a negative predictive value NPV) of 100%, specificity and positive predictive value were lower. When endometrial thickness and refringence were associated also a sensitivity and NPV of a 100% was found. It can be concluded that transvaginal ultrasound is useful to define in which patient with postmenopausal uterine bleeding the endometrial biopsy is indicated.

Adult↗

PubMedDate not supplied

Sperm characteristics and hormonal profile before and after treatment with follicle-stimulating hormone in infertile patients.

Fourteen asthenoteratozoospermic (ATZS) patients were treated with 75-IU follicle-stimulating hormone (FSH) injections 3 times a week for 3 months. In the group as a whole, sperm motility, viability, and morphology were improved, but not significantly. Only 3 patients impregnated their wives following treatment. Semen characteristics of the 3 patients whose wives were pregnant showed significant improvement in sperm morphology (p = .001). Only FSH levels were statistically higher (p = .022) than controls. The administration of FSH in weekly doses can improve the fertilization potential of sperm.

Adult↗

PubMedDate not supplied

Effects of cigarette smoking on semen characteristics of a population in Mexico.

A study of semen quality was conducted in 197 smoking and 161 non-smoking men undergoing initial infertility investigation. The men were allocated into groups according the number of cigarettes smoked per day < 10 (n = 57), 11-20 (n = 115), and > 20 cigarettes (n = 25). Smokers had significantly poorer sperm density (P < .005), a lower percentage of viability (P < .007), a lower percentage of normal sperm morphology (P < .005), and the percentage of motile sperm was lower (P < .005). These parameters were worse in the heavy smoking groups. Thus the present study corroborates reports of detrimental effects of cigarette smoking on sperm characteristics. Further studies are needed to explain the mechanism by which smoking affects spermatogenesis.

Humans↗