Biomedical subjects

G Creatsas

Publications and source records attributed to G Creatsas.

At least 55 records · Page 3Linked to original sources

PubMed2002

Effects of estrogen-progestin and raloxifene therapy on nitric oxide, prostacyclin and endothelin-1 synthesis.

This randomized double-blind study was conducted to investigate the effects of 17 beta-estradiol plus norethisterone acetate, and raloxifene, on nitric oxide (NO), prostacyclin (PGI2) and endothelin-1 (ET-1) serum levels in postmenopausal women. Treatment was initiated after a 28-50 day placebo period. Fourteen women were treated daily with 17 beta-estradiol 2 mg plus norethisterone acetate 1 mg (E2 + NETA), and 14 with raloxifene HCl 60 mg for a period of 6 months. Serum NO, PGI2 and ET-1 levels were estimated at baseline, after placebo, and at months 3 and 6. E2 + NETA decreased NO levels significantly, while raloxifene did not cause any appreciable change. Both regimens decreased PGI2 levels and ET-1 levels significantly. Finally, E2 + NETA and raloxifene increased the NO/ET-1 ratio by 61.4% and 81.1%, respectively. In conclusion, both regimens may exert a cardio-protective effect by decreasing ET-1 levels and increasing the NO/ET-1 ratio. In contrast, both regimens had a negative influence on PGI2 levels.

Cardiovascular Diseases↗

PubMed2002

Abnormal fetal heart rate patterns during the active phase of labor: the value of fetal oxygen saturation.

OBJECTIVE: To determine the predictive value of intrapartum fetal oxygen saturation (SO2) for prediction of an umbilical artery pH less than 7.15 at birth in labors complicated by abnormal fetal heart rate traces. STUDY DESIGN: Eighty-five primigravidas in spontaneous labor complicated by abnormal fetal heart rate traces underwent fetal SO2 monitoring using the fetal pulse oximetry technique. Cases with an SO2 of < 30% were delivered by Cesarean section. Umbilical artery pH was measured at birth in all women. RESULTS: With the value set of 30% as the cut-off point of fetal oxygen saturation, the positive predictive value for umbilical artery pH of < 7.15 was 61.5% and the negative predictive value was 95.8%, with a sensitivity of 72% and a specificity of 93%. CONCLUSIONS: Fetal pulse oximetry is a promising technique for assessment of fetal well-being during labor and may decrease the number of unnecessary Cesarean sections.

Female↗

PubMed2002

Q-tip test and tension-free vaginal tape in the management of female patients with genuine stress incontinence.

INTRODUCTION: To compare the Q-tip test before and after performance of the tension-free vaginal tape (TVT) procedure in women with genuine stress incontinence, and to determine the value of the Q-tip test in order to predict the outcome of TVT. METHODS: Thirty-one patients with a diagnosis of stress incontinence but without previous anti-incontinence surgery (group I) and 10 patients with stress incontinence and a history of previous anti-incontinence surgery (group II) participated in the study. None of these patients had an anterior vaginal wall prolapse of greater than stage I according to the International Continence Society Classification and, therefore, the TVT procedure was the only operation performed on these patients. Urethral mobility using the Q-tip test was assessed by the same examiner at the initial physical examination and at the 6-month follow-up examination. Cure was defined as no leakage of urine postoperatively either subjectively or objectively, while failure was defined the objective loss of urine during the stress test. RESULTS: The mean preoperative and postoperative Q-tip measurement in patients without previous operation (group I) was 43.5 +/- 5.84 and 33.38 +/- 4.77 degrees, respectively (mean difference 10.12 degrees), while the cure rate was 87.1%. The mean preoperative and postoperative Q-tip measurement in patients with previous operation (group II) was 17.5 +/- 4.44, and 11.1 +/- 6.88 degrees, respectively (mean difference 6.4 degrees), while the cure rate was 40%. CONCLUSIONS: Adequate mobility of the proximal urethra is associated with a high success rate of the TVT procedure.

Female↗

PubMed2002

[von Recklinghausen's disease and pregnancy].

Neurofibrosis or the Von Recklinghausen disease constitutes a genetically transmitted disease that appears in many parts of the body as well as many symptoms. It is inherited from the autosomatic dominant type (gene NFI on chromosome 17) and is characterized by brownish blemishes of the skin (cafe au lait), multiple neurofibromas (small dermal or subcutaneous lumps), symptoms of the peripheral and central nervous systems as well as disorders of the eyes, skeletal system, gastric system and vascular system (aneurysms of the aorta, carotid and renal arteries). We describe the case study of a 25 year old female, second pregnancy with known history of the above mentioned disease. She delivered on the 39th week of pregnancy (male neonate weighing 3000 gr.), with no problems. On the 22nd week of her pregnancy she presented with a large distension of the anterior surface of the neck in the area of the thyroid that gradually increased in size. Differential Diagnosis includes nodular goiter and neurofibroma. One month postpartum the morphoma was surgically. Neurofibrosis during pregnancy can cause many complications such as IUGR, hypertensive disease, spontaneous abortions, oligohydraminios and neurofibroma development. This case study is being discussed in international bibliography.

Adult↗

PubMed2002

[Adamantiades-Behcet's syndrome and pregnancy: a case report].

Is introducing a case study on a 20 year old female first time pregnant who presents with rare case of Adamantiadis-Bechet syndrome. These symptoms first appeared at the age of 9. The patient refers that from this age she has suffered from recurrent relapses of ulcerations of the mouth and genital organs, vescicular exanthema of the upper and lower extremities and severe headaches that would not subside with analgetic therapy. The patient upon the first trimester presented with a relapse of the disease and significant improvement during the remainder of the pregnancy. She delivered on the 39th week of her pregnancy a neonate male, alive and weighing 3640 gr. The Apgar--score 9 and 10 the 1st and 5th minute. Mother and neonate were discharged from the clinic on the 3rd postpartum day in good health. This case is also being discussed in international bibliography. Adamantiadis-Behcet syndrome constitutes systemic angiitis of unknown etiology that is characterized mainly by recurrent ulcers of the mouth and genital organs, serum negative arthritis, central nervous system disorders as well as ulcerations of the epidermis, nodular erythema, thrombophlebitis and vision disorders. It usually affects people in early adulthood, more often those in their 30s. Geographically it is seen more often in Japan, Korea, Turkey, Israel and other Mediterranean countries. Familial prevalence is also common.

Adult↗

PubMed2002

Safety and tolerability of the new contraceptive sponge Protectaid.

OBJECTIVE: This study was undertaken to assess the efficacy, safety and acceptability of two different-dose regimens of the Protectaid contraceptive sponge. METHODS: The toxic effects of two forms of the new vaginal contraceptive sponge, Protectaid, in the cervical and vaginal tissues were studied. Both types were impregnated with F-5 gel containing different doses of nonoxynol-9 (NX9; 0.5% and 0.125%). The sponge was used by 35 women aged 20-35 years (mean 28.7 years) randomly allocated into two groups (Group A: 0.5% NX9, n = 20; Group B: 0.125% NX9, n = 15). RESULTS: During a 12-month period both regimens demonstrated a 91.4% overall contraceptive efficacy. Colposcopic examinations showed no significant cervical or vaginal lesions in either group, except for two cases at the 2-week and 3-month examinations in Group A women. In the former, inflammatory changes of little clinical significance were seen and the colposcopic appearance of the vagina was non-specific. In this case, the focal lesions were accompanied by dilated capillaries (hyperemia). In the second case, degenerative inflammatory changes, with the inflammatory foci varying in shape and distribution, were observed. Cervical cultures taken 6 months after the start of treatment showed the presence of Mycoplasma hominis and Candida albicans in one and two cases, respectively, in Group A. In Group B, cervical cultures taken at 3 months showed Gardnerella vaginalis and beta-hemolytic streptococci group B in one and two cases, respectively. CONCLUSION: The potent spermicidal and protective properties of this new contraceptive sponge may be of benefit to the sexually active female. Since the sponge was very well accepted by both the study participants and their sexual partners, it can be considered as a valuable barrier method.

Administration, Intravaginal↗

PubMed2002

Adolescent pregnancy and its consequences.

OBJECTIVES: This study was designed to evaluate the incidence, complications and follow-up of adolescent pregnancies. METHODS: The medical records of two university departments of obstetrics and gynecology, were evaluated for the period 1985-1998. RESULTS: From a total of 71,680 births, 5,398 (7.53%) occurred in adolescent mothers, aged 14-19 years old. Among the teenage pregnancies, 34% resulted in birth, 57% in abortions and 9% in miscarriage. The mean gestational age at delivery was 38 weeks and 3 days and the mean birth weight was 2,880 g. The mode of delivery was normal in 84% of cases, while 9.6% were delivered by Cesarean section and 6.4% by forceps delivery (mainly vacuum extraction). Seventy-eight per cent of cases were primagravidas. Toxemia and anemia were seen in 1.2% and 0.23% of the cases, respectively. Premature separation of the placenta and placenta previa were seen in 1.08% and 1.29% of cases, respectively. Ectopic pregnancies were not seen. CONCLUSION: Although the teenage birth rate has decreased from 9.0% in 1985 to 5.6% in 1998, adolescent pregnancy still remains a medical and social problem. Most cases are unwanted pregnancies. The cases that have decided to proceed with the pregnancy have presented an insignificant number ofeomplications as assessed by adequate medical follow-up. It appears that formal sex education programs may increase knowledge about reproductive health and improve the use of methods to protect against pregnancy and sexually transmitted diseases.

Abortion, Habitual↗

PubMed2001

Which contraceptive methods are recommended for young women with type 1 diabetes mellitus? A survey among gynaecologists in Greece.

BACKGROUND: Type 1 diabetes mellitus is common in Europeans. Optimal glucometabolic control at conception and during early pregnancy is necessary to reduce the risk of early miscarriage and congenital malformations. Safe and effective contraceptive methods are essential for these women in order to have a "planned pregnancy" under optimal conditions. AIM: To find out which recommendations Greek gynaecologists give to young patients with type 1 diabetes mellitus with respect to contraception. To regard the experience of Greek gynaecologists in counselling with women. To compare the Greek gynaecologists with German gynaecologists in a previously published similar survey. SUBJECTS AND METHODS: A structured questionnaire containing questions about attitude, health care and contraception in young women with type 1 diabetes was given to 400 Greek gynaecologists working in Athens. RESULTS: Only 70 (17.5%) of the Greek gynaecologists returned the questionnaire. Condoms were the preferred recommendation as contraceptive method for young women with diabetes mellitus type 1 in 64%. About 57% of the gynaecologists recommended this type of contraception as first line contraceptives for young women with diabetes type 1 who smoke. The two most important criteria for selection of a contraceptive method for Greek gynaecologists were the safety and the diabetes specific problems. The Greek gynaecologists had only limited experience in regard to counselling and treating young and adolescent women with type 1 diabetes. CONCLUSION: There was no consensus with respect to contraception among Greek gynaecologists. This is similar to our previous findings in a survey involving German gynaecologists. Practical experience in counselling and treating adolescent and young women with type 1 diabetes was limited among the gynaecologists who participated in this study. Working out proper recommendations for contraception crucial for optimal medical care for type 1 diabetic women in Europe.

Adolescent↗

PubMed2001

Long term effects of Tibolone on postmenopausal women with uterine myomas.

OBJECTIVES: The aim of the present study is to evaluate the long term effects of Tibolone (Livial) on uterine myomas volume as well as on uterine arteries pulsatility index (PI) in postmenopausal women. METHODS: This study included 66 naturally menopausal women. Twenty of them (group A) had no uterine myomas; 23 of them (group B) had a single, asymptomatic, intramural or subserous myoma of a maximum diameter less or equal than 2 cm; 23 of them (group C) had a single, asymptomatic, intramural or subserous myoma of a maximum diameter between 2 and 5 cm. The volume of the myomas as well as the pulsatility index of the uterine arteries was assessed by transvaginal ultrasonography every 6 months after administration of Tibolone (2.5 mg daily). RESULTS: No statistically significant difference on myomas volume was found after a 3-year period of Tibolone administration. The uterine artery basal PI was significantly higher in group A compared to that of groups B and C. After 6 months of Tibolone administration the PI in group A was significantly lower compared to the basal one whereas in groups B and C was significantly higher compared to the basal value. CONCLUSIONS: Our results suggest that treating postmenopausal woman with Tibolone on a long-term basis: (a) does not increase the volume of uterine myomas and (b) has an early effect on uterine haemodynamics (decrease of PI in women without myomas and increase of PI in women with myomas).

Antineoplastic Agents, Hormonal↗

PubMed2001

Homocysteine and folate levels in postmenopausal women.

OBJECTIVES: To assess total homocysteine (tHcy) and folate levels in postmenopausal women and investigate whether age, menopause duration, kind of menopause and tobacco use had an effect on these levels. METHODS: Total homocysteine and folate levels were measured in fasting blood samples of 200 postmenopausal women with normal thyroid and renal function tests. Patients were not receiving vitamins or hormone replacement therapy. RESULTS: Total homocysteine levels increased significantly after 60 years while folate levels showed a decrease trend after 65 years. Menopause duration had no effect on folate levels and increased significantly tHcy levels after >180 months duration. The kind of menopause did not influence tHcy and folate levels. Tobacco use reduced significantly folate levels. CONCLUSIONS: Age seems to be the principal factor influencing tHcy levels. We believe that decreased folate levels also reflect an age-associated inadequate dietary intake. Tobacco use did not alter tHcy levels; however, we found smoking to lower folate levels.

Adult↗

PubMed2001

Ureteral injuries during gynecological surgery.

The purpose of this study was to review the cases of ureteric injuries during major pelvic surgery that occurred in our department over the last 15 years, in relation to possible predisposing factors and patient management according to the type of injury. From 5,122 major gynecologic operations we found 18 cases of ureteric injury, including 4 cases of urinoma. Parameters that were examined included the indication for surgery and the type of operation, coexisting pathological conditions, the position of and the delay in recognition of the ureteric damage. The incidence of ureteric injury was 0.35%. The time of recognition of injury in 9 cases was during primary surgery and end-to-end anastomosis was performed, whereas in the other 9 cases the injury was recognized after surgery and repair of the ureter was performed, with reimplantation into the bladder in 4 cases and end-to-end anastomosis in 5. Action to prevent the development of iatrogenic ureteral injury must be taken in advance, and the management of ureteric injuries could be improved with prompt recognition and repair by a skilled surgeon.

Adult↗

PubMed2001

The renin-aldosterone system during normal and hypertensive pregnancy.

Gestational hypertension complicates approximately 5%-7% of pregnancies and it may be deleterious to both maternal and fetal health. Gestational hypertension is a multisystem disorder which always resolves itself after delivery; its primary pathology still remains incompletely clarified. The renin-aldosterone system is a major determinant of sodium balance in pregnancy. To evaluate the changes in renin and aldosterone levels during normal and hypertensive pregnancy we undertook this study. Plasma renin activity and aldosterone levels were measured in 71 pregnant (43 normotensive, 28 hypertensive) and 24 non-pregnant (12 normotensive, 12 hypertensive) women, aged 19-43 years (mean +/- SD 28 +/- 2.8). Women were allocated into the following five groups: Groups 1 and 2 consisted of 12 normotensive and 12 hypertensive non-pregnant women, respectively; group 3 consisted of 20 women (14 normotensive and 6 hypertensive) at 11-19 weeks of gestation; group 4 consisted of 24 women (14 normotensive and 10 hypertensive) at 20-29 weeks of gestation, and group 5 consisted of 27 women (15 normotensive and 12 hypertensive) at 30-37 weeks of gestation. Both plasma renin activity and aldosterone levels progressively increased during normotensive pregnancy and were higher compared to normotensive non-pregnant women. Among hypertensive pregnant women, plasma renin activity levels remained unchanged during the three trimesters of pregnancy and were higher compared to hypertensive non-pregnant women. Only during the third trimester did aldosterone levels significantly increase in hypertensive pregnant women, compared to hypertensive non-pregnant women. Despite stable renin levels, aldosterone levels increased significantly during the third trimester of hypertensive pregnancy. Thus, we conclude that aldosterone biology seems to be directly or indirectly involved in the etiology of gestational hypertension independently of renin levels.

Adult↗

PubMed2001

Concentrations of angiogenic factors in follicular fluid and oocyte-cumulus complex culture medium from women undergoing in vitro fertilization: association with oocyte maturity and fertilization.

OBJECTIVE: To determine the concentration of angiogenic factors (vascular endothelial growth factor [VEGF], basic fibroblast growth factor [bFGF], and angiogenin) in the follicular fluid (FF) and oocyte-cumulus complex culture medium (CM) of women undergoing IVF and to investigate the association of the concentrations with the maturity and fertilization of the oocyte. DESIGN: Prospective study. SETTING: Academic tertiary-care institution. PATIENT(S): IVF patients with unexplained or tubal factor infertility. INTERVENTION(S): Analysis of VEGF, bFGF, and angiogenin FF and CM concentrations. MAIN OUTCOME MEASURE(S): Oocyte maturity and fertilization and FF and CM angiogenic factor concentrations. RESULT(S): VEGF, bFGF, and angiogenin were determined in FF and CM. FF angiogenin concentrations were significantly higher when the oocyte was mature versus immature. CM VEGF concentrations were significantly higher when the oocyte was nonfertilized versus fertilized. Positive correlations were observed between angiogenic factors in CM. CONCLUSION(S): VEGF, bFGF, and angiogenin (determined for the first time) are secreted in the FF and CM. Elevated CM VEGF concentrations, probably implying oocyte-cumulus complex hypoxia, are negatively associated with oocyte fertilization. Elevated FF angiogenin concentrations are positively associated with oocyte maturity, possibly indicating angiogenin's biological role beyond neovascularization.

Adult↗

PubMed2001

Creation of a neovagina following Williams vaginoplasty and the Creatsas modification in 111 patients with Mayer-Rokitansky-Küster-Hauser syndrome.

OBJECTIVE: Evaluation of the Creatsas modification of Williams vaginoplasty for the creation of neovagina in patients with Mayer-Rokitansky-Küster-Hauser syndrome (MRKH syndrome). DESIGN: Record of perioperative and postoperative results and complications. Follow-up evaluations of patients yearly after the operation. SETTING: Division of Pediatric-Adolescent Gynecology and Gynecologic Corrective Surgery, University of Athens (tertiary referral center). PATIENT(S): One hundred eleven patients with MRKH syndrome. INTERVENTION(S): Surgical creation of neovagina using the Williams vaginoplasty technique (group A: 10 patients) or the Creatsas modification of the previous method (group B: 101 patients). MAIN OUTCOME MEASURE(S): Length and width of the neovagina, and the quality of sexual life postoperatively. RESULT(S): A functioning vagina of 10 to 12 cm depth and 5 cm width was created in eight of the patients in group A (80%) and in 98 of those in group B (97.02%). A vagina of 7 to 9 cm depth and 2 to 3 cm width was created in the rest of the patients in both groups. In group A, two wound openings were reported (20%); in two of the patients hemorrhage occurred during the first intercourse, compared to none in group B. A satisfactory sexual life was reported from 94.4% of the patients and an adequate one from 4.16% of them. CONCLUSION(S): The Creatsas modification of Williams vaginoplasty is a simple and effective technique for the creation of a functioning neovagina in young women with vaginal aplasia.

Adolescent↗

PubMed2001

Gene analysis of the N-terminal region of the estrogen receptor alpha in preeclampsia.

Alterations in the NH(2)-terminal region of the estrogen receptor alpha (ERalpha) gene expressed in placental bed tissue may be implicated in the development of preeclampsia, the pathogenesis of which involves the spiral arteries. Therefore, mutations and polymorphisms on exons 1 and 2 of the gene encoding ERalpha were studied. Placental bed biopsies were taken from 20 healthy, normotensive pregnant women and 16 preeclamptic patients. DNA was extracted from the tissue and exon 1 and exon 2 were amplified by PCR prior to denaturing gradient gel electrophoresis analysis or to single stranded conformational polymorphism analysis. In exon 1, a codon 10 polymorphism, either homozygous for the wild type gene, homozygous for the mutant type gene, or heterozygous, was revealed in both patients and healthy individuals. A codon 87 polymorphism, homozygous for the wild type gene, was detected in both groups. No mutations or polymorphisms were found in exon 2. The allele distribution for either codon 10 or 87 between patients and healthy individuals showed no significant differences. In conclusion, genetic alterations in the NH(2)-terminal region of the ERalpha molecule are not correlated with preeclampsia.

Codon↗

PubMed2001

The efficacy of bladder distention therapy in the treatment of frequency and urgency.

BACKGROUND: The aim of this retrospective study was to evaluate whether bladder distention therapy is effective in relieving the symptoms of patients experiencing urinary frequency and urgency. MATERIALS AND METHODS: Twenty-six female patients with a history of frequency and urgency who underwent multi-channel urodynamic assessment, were treated with bladder distention therapy for symptomatic relief of their symptoms. Their mean age was 51 years of age (range from 28 to 75 years old). No patient had detrusor-urethral sphincter dyssynergia. Bladder distention therapy was performed in the operating theatre under epidural anesthesia. Statistical analysis was performed with the Student's t-test. RESULTS: The treatment was successful in 9 out of 26 patients after the first attempt (34.6%) and in 10 out of 26 patients after the second attempt (38%) at 1 month follow-up (FLU) and in 4 out of 28 patients at 9 months FLU (15%). Only one out of four patients who had this treatment twice showed improvement of her symptoms. CONCLUSION: Bladder distention therapy in patients with symptoms of overactive bladder dysfunction has a very small success rate (15%) and therefore, has no place in the modern treatment of bladder dysfunction.

Adult↗

PubMed2001

Alterations of maternal and fetal leptin concentrations in hypertensive disorders of pregnancy.

OBJECTIVES: To investigate whether hypertensive disorders of pregnancy alter the maternal and fetal leptin levels. METHODS: Fifty primigravidas between 28 and 34 weeks of gestation were divided into three groups: group A consisted of 17 normal pregnant women with a mean gestational age of 31 weeks, group B consisted of 15 women with gestational hypertension without proteinuria with a mean gestational age of 30 weeks and group C consisted of 18 pre-eclamptic women with a mean gestational age of 31 weeks. RESULTS: The pre-eclamptics had significantly higher serum leptin levels than those in normal pregnancies (p<0.001) but no difference was noted between normal and gestational hypertensive pregnancies. Pre-eclamptic women had significantly higher umbilical vein leptin levels (4.68+/-1.66ng/ml) compared to normal pregnancies (1.92+/-0.71ng/ml) and those with gestational hypertension (2.47+/-0.81ng/ml). CONCLUSIONS: Pre-eclampsia is associated with an increase in maternal plasma leptin levels and fetal of leptin production increases in gestational hypertension and even more in pre-eclampsia.

Adult↗

PubMed2001

Changes of collagen type III in female patients with genuine stress incontinence and pelvic floor prolapse.

PURPOSE: Objective of this study was to determine possible changes in the quantity of type III collagen in women with genuine stress incontinence (GSI) and with pelvic relaxation or not. MATERIAL AND METHODS: Ninety-four women participated in the study and they were divided in to three groups as follow: 34 patients with GSI and pelvic relaxation (group 1), 32 patients with pelvic relaxation but without GSI (group 2) and 28 patients with neither pelvic relaxation nor GSI (group 3). All the women underwent a complete pre-operative urodynamic evaluation. The presence of collagen type III was determined by immunohistochemical technique. The X-test was used for statistical analysis. A P<0.05 was considered statistically significant. RESULTS: Collagen type III was significantly reduced (p<0.05) in patients with GSI and pelvic relaxation in both sites of biopsy (group 1), compared to patients in groups 2 and 3. Specimens from women without GSI (group 2 and group 3) had a similar density of collagen type III in both sites of biopsy. CONCLUSION: In this study, we found that women with GSI had less collagen type III around the urethra regardless of the degree of pelvic relaxation. It appears that collagen has a significant role in the maintenance of urinary continence but the mechanism by which collagen metabolism is altered remains unknown.

Biopsy↗