Fourier integrals and a new representation of Maslov's canonical operator near caustics

We suggest a new representation of Maslov's canonical operator in a neighborhood of the caustics using a special class of coordinate systems (\eikonal coordinates") on Lagrangian manifolds

Elevated Circulating IL-1β and TNF-Alpha, and Unaltered IL-6 in First-Trimester Pregnancies Complicated by Threatened Abortion With an Adverse Outcome

The purpose of the present study was to examine the profile of selected proinflammatory cytokines in maternal serum of first-trimester pregnancies complicated by threatened abortion (TACP) and its relevance to obstetric outcome. Serum levels of Th1-type cytokines interleukin-1β (IL-1β), tumor necrosis factor alpha (TNF-alpha), and Th2-type cytokine interleukin 6 (IL-6) were measured, by ELISA, in 22 women with TACP and adverse outcome at admission (group A) and compared with the corresponding levels of 31 gestational age-matched women with TACP and successful outcome at admission (group B1) and discharge (group B2) and 22 gestational age-matched women with first-trimester uncomplicated pregnancy (group C) who served as controls. Mann-Whitney U or Wilcoxon test was applied as appropriate to compare differences between groups. IL-1β and TNF-alpha were detected with significantly higher levels in group A, compared to all other groups. On the contrary, IL-6 levels were detected with no significant difference among all the other groups studied. It is concluded that in first-trimester TACP with adverse outcome, a distinct immune response, as reflected by elevated maternal IL-1β, TNF-alpha, and unaltered IL-6 levels, is relevant to a negative obstetric outcome

Vascular Endothelial Growth Factor and Placenta Growth Factor in Intrauterine Growth-Restricted Fetuses and Neonates

The angiogenic factors vascular endothelial growth factor (VEGF) and placenta growth factor (PlGF) are respectively up- and downregulated by hypoxia. We aimed to study circulating levels of the above factors in intrauterine growth restriction (IUGR) and to correlate their levels with the customized centiles of the infants. The study included 25 IUGR and 25 appropriate for gestational age (AGA) full-term, singleton infants and their mothers. Maternal (MS), fetal (UC), and neonatal day 1 (N1) and 4 (N4) blood was examined. MS and N1 PlGF, as well as UC VEGF levels correlated with the customized centiles of the infants (r = 0.39, P = .007, r = 0.34, P = .01, and r = −0.41, P = .004, resp). Furthermore, UC, N1, and N4 VEGF levels were higher in girls (r = 0.36, P = .01, r = 0.33, P = .02, and r = 0.41, P = .005 resp). In conclusion, positive and negative correlations of examined factors with the customized centiles of the infant could rely on placental function and intrauterine oxygen concentrations—both being usually lower in IUGR cases—while higher VEGF levels in girls should possibly be attributed to the stimulating action of estrogens

Concurrent imperforate hymen, transverse vaginal septum, and unicornuate uterus: a case report

A 14-year-old premenarcheal adolescent girl presented with lower abdominal discomfort and urine retention. After clinical and imaging examination, an imperforate hymen and a large hematocolpos along the upper part of the vagina was diagnosed. Incision of the imperforate hymen did not lead to drainage of blood or fluid. A complete transverse vaginal septum in the middle third of the vagina was identified and when incised drained approximately 200 mL of a dense brownish fluid. Laparoscopy showed a small unicornuate uterus, confirmed by hysteroscopy. This is the first case in the literature of concurrent imperforate hymen, transverse complete vaginal septum, and unicornuate uterus, and it highlights the potential of a multifactorial embryologic genetic etiology. (C) 2007 Elsevier Inc. All rights reserved

Association between serum tumor necrosis factor-alpha and corticotropin-releasing hormone levels in women with preterm labor

Aim: To evaluate the association of serum corticotropin-releasing hormone (CRH) and tumor necrosis factor-alpha (TNF-alpha) in preterm labor. Methods: Forty-nine primigravidas with a singleton viable pregnancy between 28 and 34 weeks of gestation were studied. They were divided into two groups. Group A consisted of 30 pregnant women (mean gestational age: 30.6 week) who presented with preterm labor and group B consisted of 19 pregnant women (mean gestational age: 29.8 week) with normal pregnancies. Results: Women of group A had significantly higher serum CRH levels compared to those of group B (P < 0.01). Similarly, serum TNF-alpha levels were significantly higher in women of group A when compared to women of group B (7.8 +/- 3.72 pg/mL and 5.1 +/- 3.72 pg/mL, respectively). Furthermore, a positive correlation was found between serum CRH and TNF-alpha levels in both groups, which was stronger in women of group A. Conclusions: Our findings suggest that the increased levels of TNF-alpha and CRH found in pregnant women presenting with preterm labor may be involved in the pathophysiological mechanism of the latter. Furthermore, a positive interaction may exist between TNF-alpha and placental CRH, which may lead to enhanced production of the second and, therefore, facilitate the onset of labor

Distinct types of uterine adenomyosis based on laparoscopic and histopathologic criteria

Purpose: To analyze laparoscopically treated cases of adenomyosis based on intraoperative and histopathology findings and to correlate different types with patients' presenting symptoms and characteristics, as well as with the surgical approach. Materials and Methods: Sixty-eight women who underwent laparoscopic treatment of adenomyosis at a referral center for gynecological laparoscopy. Results: Four distinct types of adenomyosis could be identified: diffuse, sclerotic, nodular, and cystic (54.5%, 13%, 28%, and 4.5% of cases, respectively). Menorrhagia as the main presenting symptom was significantly more frequent in patients with the diffuse type (84%) compared to those with sclerotic (44%) and nodular (37%) types (p = 0.025 and p = 0.001, respectively). All cases of cystic and nodular adenomyosis were treated by laparoscopic excision of the lesion. Eighty-nine percent of patients with sclerotic adenomyosis were treated with wide laparoscopic excision of the abnormal tissue. Eighty-one percent of patients with diffuse adenomyosis were treated with laparoscopic hysterectomy. Conclusions: Adenomyosis can be classified in four distinct types with differences in the presenting symptoms, as well as in the ideal surgical approach.SCOPUS: ar.jinfo:eu-repo/semantics/publishe