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In this paper, closed forms of the sum formulas ∑nk=0kxkWk and ∑nk=1kxkW-k for generalized Hexanacci numbers are presented. As special cases, we give summation formulas of Hexanacci, Hexanacci-Lucas, and other sixth-order recurrence sequences. [ABSTRACT FROM AUTHOR]

In this paper, closed forms of the sum formulas ∑k=1n GWk², ∑k=1n GWk+2GWk and ∑k=1n GWk+1GWk for the squares of Gaussian generalized Tribonacci numbers are presented. As special cases, we give sum formulas of Gaussian Tribonacci, Gaussian Tribonacci-Lucas, Gaussian Padovan, Gaussian Perrin, Gaussian Narayana and some other third order linear recurrence sequences. All the summing formulas of well known recurrence sequences are linear except the cases Gaussian Pell-Padovan and Gaussian Padovan-Perrin. [ABSTRACT FROM AUTHOR]

Objective: We investigated the effect of prenatal exposure to smart phone radiation and the protective effect of omega-3 on ovarian reserve of offspring. Methods: 24 pregnant Wistar albino rats were divided into four groups. Group-I received neither radiofrequency (RF) radiation nor omega-3, group-II received RF, group-III received RF radiation and 300 mg omega-3 and group-IV received RF radiation and 600 mg Omega-3 till birth. At 42 days, bilateral oophorectomy was performed on all female offspring for follicle count and immunohistochemical staining (GDF9, FOXO1 and TUNEL). Results: Group-II had significantly lower mean number of primordial (p = 0.006), secondary follicles(p = 0.003) and a higher atresia score. Group-III variables were comparable with group-I variables. Group-IV had statistically higher median number of atretic follicles than group-I (p = 0.023). Conclusions: Ovarian reserve of offspring diminished with RF exposure during pregnancy. Omega-3 supplementation during pregnancy may reduce the potential premature ovarian failure.

Objectives: Acute appendicitis during pregnancy may be associated with severe maternal and fetal complications. The clinical, laboratory and radiological parameters used in diagnosis and the effects of the surgical method and timing on the results are controversial. The present study aims to reveal the relationship between clinical approach, surgical treatment methods and complications in pregnant women with suspected acute appendicitis., Methods: Between December 2007 and August 2019, 21 pregnant women who underwent appendectomy were included in this study. Age, gestational age, complaints at admission, leukocyte count, radiological examination results, type of surgery (conventional or laparoscopic), histopathology results, time from admission to operation, maternal and fetal complications were retrospectively evaluated., Results: The number of patients who developed complications was six (28.6%). Three (14.3%) of these patients had preterm birth and three (14.3%) had an abortion. There was no statistically significant relationship between trimester and complication (p=0.747). Fourteen patients (66.7%) underwent laparoscopic surgery and seven patients (33.3%) underwent conventional surgery. Although the complication rate was higher in the laparoscopic group, there was no statistically significant difference (p=0.306). The fetal loss rate in the series was 14.3% and all were in the laparoscopic group. However, there was no statistically significant difference between the groups (p=0.158)., Conclusion: Pregnancy-related limiting factors may complicate the diagnosis of acute appendicitis. These patients definitely need a more skeptical assessment and additional diagnostic tools beyond the standard clinical approach. Although laparoscopic appendectomy appears to be a safe option in treatment, its relationship with a higher risk of fetal loss should be kept in mind., Competing Interests: Conflict of Interest: None declared., (Copyright: © 2020 by The Medical Bulletin of Sisli Etfal Hospital.)