Detection of bacteria using antimicrobial polymer derived via ring-opening metathesis (romp) pathway.

There is growing interest in the detection of bacteria in consumables, for example, in the food and water sectors. In this study, the aim was to produce a polymer-based bacteria biosensor via ROMP (ring opening metathesis polymerization). In the first part of the study, block and random copolymers were synthesized, and their biocidal activities were tested on the glass surface. Interdigitated electrode arrays coated with the polymers possessing the highest activity were used to screen the affinity towards different bacterial strains by monitoring impedance variations in real-time. The polymer-coated electrode could detect gram-positive and gram-negative bacteria strains at a concentration of 107 cfu/mL. The results show that ROMP-based polymer offers bacterial detection and can be used in developing biosensor devices for efficiently detecting pathogenic bacteria.

Levonorgestrel-releasing intrauterine device use as an alternative to surgical therapy for uterine leiomyoma.

OBJECTIVE: To evaluate the efficacy of the levonorgestrel-releasing intrauterine system (LNG-IUS) in the treatment of leiomyoma related menorrhagia and to assess the effect of LNG-IUS on uterine, leiomyoma, and ovarian volume. MATERIALS AND METHODS: In this prospective before and after study, LNG-IUS was inserted in 38 women with myoma-related menorrhagia. The patients were evaluated for serum levels of hemoglobin, hematocrit and uterine, leiomyoma, and ovarian volume at the time of insertion and at six months. RESULTS: Significant reduction in the Pictorial Blood Loss Assessment Chart (PBAC) score and increases in serum hemoglobin levels and in amenorrhea was observed within three months. However, there was no statistically significant reduction in the myoma and uterine volume. Ovarian volume, also, did not changed significantly. CONCLUSION: The use of LNG-IUS is effective in reducing menorrhagia associated with leiomyomas with improvement in hemoglobin levels and may be a simple and effective alternative to surgical treatment of leiomyoma-related abnormal uterine bleeding (AUB-L) without significant influence on the volume of leiomyoma and ovarian and uterine volume.

A predictor of small-for-gestational-age infant: oral glucose challenge test.

OBJECTIVE: This study was performed to investigate the role of first-hour 50-g oral glucose challenge test (GCT) parameters in predicting the risk of delivering a small-for-gestational-age infant and to determine the accuracy of estimated fetal weight. METHODS: We screened 2,643 pregnant women >20 years of age and excluded 552 patients according to exclusion criteria. Newborns were assigned to three groups as SGA(n:100), AGA(n:100), and LGA(n:100) according to birth weight. All mothers received 50-g GCT in their 24-28th weeks of gestation. We examined the relationship between birthweight and test results. RESULTS: First-hour serum glucose level after the test significantly predicted babies with small for gestational age. Optimal cutoff value was obtained at a level of 74.5 mg/dl with 67% sensitivity and 55% specificity. The estimated fetal weight of Hadlock 5 formula was strongly correlated with the birth weight (Pearson r = 0.89). CONCLUSION: Our study revealed that 50-g oral glucose challenge test may predict small-for-gestational-age cases with 67% sensitivity, and our data revealed that there is a significant correlation between estimated fetal weight of Hadlock 5 formula and the birth weight.

Evaluation of depth of myometrial invasion by magnetic resonance imaging in patients with endometrial carcinoma.

AIMS: The aim of this study was to evaluate clinical accuracy of magnetic resonance imaging (MRI) staging of myometrial invasion in patients with endometrial carcinoma. METHODS: The study group consisted of 37 women with endometrial carcinoma who underwent preoperative workup, including MRI, and surgical staging at Goztepe Training Hospital, Istanbul, Turkey. We collected clinical, MRI, surgical and histopathological data of the study subjects from patients' charts. RESULTS: The mean patient age was 57 years (range 39-76 years). Of the subjects, 32 (86.5%) had endometrioid carcinoma. After histopathological evaluation, we found that four (10.8%) patients had no myometrial invasion, 14 (37.8%) had superficial myometrial invasion, and 19 (51.3%) had deep myometrial invasion. Overall, the accuracy of MRI staging increased in accordance with the increase of surgical stage of endometrial carcinoma. Overall, clinical success of MRI staging was higher in patients with deep myometrial invasion. CONCLUSION: The accuracy of MRI to depict the depth of myometrial invasion increases in accordance with surgical stage in patients with endometrial cancer. The combination of MRI and clinical findings may be helpful in determining the extent of surgery.

Transvaginal ultrasonography and saline infusion sonohysterography for the detection of intra-uterine lesions in pre- and post-menopausal women with abnormal uterine bleeding.

This prospective study investigated 79 pre- and 25 post-menopausal women with abnormal uterine bleeding who underwent conventional transvaginal ultrasonography (TVS) and saline infusion sonohysterography (SIS) and compared the results with histopathological findings obtained by dilatation and curettage, hysteroscopy or hysterectomy. Histological examination revealed normal endometrial histology in 28 patients, intracavitary polyps in 46 patients, submucosal fibroids in 18 patients, intramural fibroids in six patients and endometrial hyperplasia in six patients. The sensitivity and specificity of TVS in detecting endometrial polyps were 65.2% and 87.9%, respectively, compared with 91.3% and 93.1% for SIS. The sensitivity and specificity of TVS in detecting uterine fibroids were 95.8% and 95.0%, respectively, versus 91.6% and 98.7% for SIS. These results show that SIS is a satisfactory method of identifying lesions and that it is easy and cost-effective, and improves on the diagnostic utility of TVS. SIS is also a less invasive alternative to hysteroscopy, so should result in less morbidity in the evaluation of abnormal uterine bleeding in women.