The effects of radiotherapy on arterial diameters in patients with high-grade glial tumors who have undergone adjuvant radiotherapy.

Background and Aims: Our purpose was to evaluate the M2 branch of the middle cerebral artery (MCA) in high-grade glial tumor patients who undergo adjuvant radiotherapy (RT). For this purpose, the diameter of the M2 branch was measured and evaluated by means of contrast-enhanced magnetic resonance imaging (CE-MRI) before and after RT. Post-radiotherapeutical measurements were made 1, 3, 5, and 7 months after the procedure; and vascular diameter alterations were evaluated. Materials and Methods: CE-MRI examinations were performed on the 32 patients enrolled in the study, who had undergone radiotherapy of the temporoparietal region. MRI examinations were performed prior to RT (RT0) and 1 (RT1), 3 (RT2), 5 (RT3), and 7 (RT4) months after RT. The M2 branch of the MCA was evaluated on MRI images, and the vessel diameter was measured in millimeters (mm), and then comparisons were made. Results: Statistically significant results were obtained during RT0-RT1, RT0-RT2, RT0-RT3, RT0-RT4, RT1-RT2, RT2-RT4, and RT3-RT4, and comparisons of the diameters of the M2 branch of the right MCA were performed (P < 0.05). When the same measurements and comparisons were made for the M2 branch of the left MCA, statistically significant results were found for the RT1-RT2, RT1-RT3, and RT1-RT4 comparisons (P < 0.05). Conclusion: Our study showed that the MCA M2 branch diminished in size following RT. This was demonstrated by means of CE-MRI controls performed up to 7 months after the completion of the RT procedures.

The impact of genital warts on sexual function and sexuality-related distress in late adolescence.

Adolescence is a transition period during which sexual experiences gain importance. Genital warts are sexually transmitted lesions that have been shown to negatively affect sexual perception. This study aimed to evaluate the impact of genital warts on female sexual function and sexuality-related distress in adolescence. A total of 90 female adolescents between the ages of 17 and 21 who had regular sexual intercourse with heterosexual partners were included in this prospective case-control study. Female Sexual Function Index, Arizona Sexual Experiences Scale, and Female Sexual Distress Scale-Revised scores of adolescents with genital warts (n = 45) were compared to healthy subjects (n = 45). Total Female Sexual Function Index and Arizona Sexual Experiences Scale scores revealed significant dysfunction in adolescents with genital warts (20.7 ± 4.13 (20.9) vs. 28.2 ± 3.51 (28.7), p < 0.0001; 17.1 ± 3.61 (17) vs. 13.02 ± 3.01 (13), p < 0.0001, respectively). Total Female Sexual Distress Scale-Revised score was significantly decreased in the presence of genital warts (23.82 ± 9.73 (23) vs. 8.8 ± 7.38 (6), p < 0.0001). Significant correlations were found between the total Female Sexual Distress Scale-Revised score and the total Female Sexual Function Index score, and the Arizona Sexual Experiences Scale score (r = -0.78, p < 0.0001; r = 0.68, p < 0.0001, respectively). This study revealed that genital warts have significantly unfavorable effects on sexuality in adolescence leading to sexual dysfunction as well as sexuality-related distress. Regarding to the present findings, promoting sexual health in addition to physical well-being may increase success in clinical management of genital warts.

The effect of oxytocin and Kisspeptin-10 in ovary and uterus of ischemia-reperfusion injured rats.

OBJECTIVE: Ischemia/reperfusion (I/R) injuries result in damage to endothelial and parenchymal cells. Oxytocin (OXY) stimulates uterine contraction during parturition and myoepithelial cells during suckling. OXY has been used as a protective antioxidant. Kisspeptin plays a key role in the central control of reproductive functions and onset of puberty. Recent studies show that these reproductive hormones have protective potential as antioxidant. The aim of this study is to investigate the potential protective effects of Kisspeptin and OXY as antioxidants on I/R injured ovary and uterus of female rats. MATERIALS AND METHODS: Rats were separated into five groups. Group 1, is control group; Group 2, rats were subjected to ischemia followed by reperfusion. Group 3, OXY administration 30 min prior to I/R applied rats; Group 4, Kisspeptin administration 30 min prior to I/R applied rats; Group 5, OXY and Kisspeptin administration 30 min prior to I/R. Ovary and uterus were removed for histopathological and biochemical observations. Malondialdehyde, glutathione levels, and superoxide dismutase activities were analyzed in order to observe antioxidant potential of OXY and Kisspeptin. Hematoxylin and Eosin staining was applied for histopathologic scoring. RESULTS: Stromal and granulosa cells in ovary, endometrial cells in uterus were damaged in I/R group. The cellular damage of ovary and uterus were reduced in OXY and Kisspeptin administered I/R group when compared to only Kisspeptin injected I/R group and I/R group. There is no significant difference between OXY and OXY + Kisspeptin injected I/R groups. MDA levels were decreased in Kisspeptin and/or Oxytocin applied I/R group compared to I/R group. SOD activity and GSH levels were increased in Kisspeptin and/or OXY applied I/R group compared to I/R group. CONCLUSIONS: The present results suggest that exogenous application of oxytocin and kisspeptin can have antioxidant effects on the uterus and ovary.

Anticonvulsant activity of resveratrol-loaded liposomes in vivo.

Resveratrol (3,5,4'-stilbenetriol), a natural polyphenol produced by various plants, has attracted attention over the past decade because of its multiple beneficial properties, including anti-inflammatory, anti-oxidant and chemopreventive, yet, there is limited information about its antiepileptic effects. Moreover, its poor solubility in water and low bioavailability are the challenging issues. In the present study, we aimed to investigate effects of free resveratrol and resveratrol delivered in amphipathic liposomal delivery system, which has a high blood-brain barrier crossing potential, on penicillin-induced epileptic seizure model. For this purpose, adult male Sprague-Dawley rats were divided into four groups as saline (Control), liposome (LIP), free resveratrol (RES) and resveratrol+liposome (RES+LIP). Penicillin-induced epileptic activity was recorded for 120 min by electrocorticography. Glutathione S-transferase (GST), Glutathione (GSH), Superoxide dismutase (SOD) and Malondialdehyde (MDA) assays were performed in brain tissues collected. Our results showed that RES+LIP was the most effective anticonvulsant treatment on penicillin-induced epileptic seizures when compared to control, as RES+LIP immediately decreased the number of spikes per minute. GST and SOD activity, as well as the GSH levels, were significantly increased in the RES+LIP group as compared with the control group. Also, the MDA levels were significantly higher in the RES+LIP compared to RES and control groups. In conclusion, RES+LIP treatment was more effective on the decrease in spike frequency and spike amplitudes than other treatments. Our results suggest that the RES+LIP is more effective than RES on penicillin-induced epileptiform activity.

The effects of melatonin on endometriotic lesions induced by implanting human endometriotic cells in the first SCID-mouse endometriosis-model developed in Turkey.

OBJECTIVE: To evaluate the effects of melatonin on endometriotic lesions induced by implanting human endometriotic cells in SCID mice. MATERIALS AND METHODS: Prospective, randomized, controlled, experimental study. Experimental Research Center of Yeditepe University (YUDETAM). Thirty female, non-pregnant, nulligravid severe combined immunodeficient (SCID) mice. Endometriotic cells collected from patients with endometriosis were implanted subcutaneously in 30 SCID mice. These mice were randomized into two study groups: in the first group, mice were administered melatonin (20 mg/kg/day) following induction of endometriosis for four weeks; in the second group, nothing was administered. All the mice were given a high dose of exogenous estradiol (50 µg/kg/d, twice weekly). Four weeks after inoculation, necropsies were performed and endometriotic lesions were collected. All the lesions were evaluated histopathologically and the levels of SOD and MDA were assessed in the lesions. RESULTS: Successful implantation was observed in the 28 mice that survived. Mean MDA level was 5.0 ± 1.7 and 8.8 ± 2.6 in the melatonin and control groups, respectively (p = 0.01); mean SOD level was 1.1 ± 0.1 and 1.0 ± 0.1 in the melatonin and control groups, respectively (p = 0.49). Mean histopathological score was lower in the melatonin group (p = 0.04). CONCLUSIONS: Melatonin was effective in the treatment of experimental endometriosis induced in SCID mice.