Synthesis, characterization, electrospinning and antibacterial studies on triphenylphosphine-dithiphosphonates Copper(I) and Silver(I) complexes

Background: The novel amido and O-ferrocenyldithiophosphonates [FcP(S)(SH)(NHR1)] (Fc = Fe(η5-C5H5)(η5-C5H4), R1 = 1-(4-fluorophenylethyl and benzyloxycyclopentyl) and [FcP(S)(OR2)S-][H3N+C(CH3)3] (R2 = myrtanyl) were synthesized by the reaction of [(FcPS2)]2 (Fc = Fe(η5-C5H5)(η5-C5H4)) and chiral amines, such as (S)-(-)-1-(4-fluorophenylethyl) amine and (1S,2S)-(+)-benzyloxycyclopentyl amine, and of (1S), (2S), (5S)-myrtanol in toluene. The reaction of ferrocenyldithiophosphonates and [Cu(PPh3)2]NO3 or AgNO3 and PPh3 gave rise to copper(I) and silver(I) complexes in THF. [Ag2{FcP(OMe)S2}2(PPh3)2] and [Cu(PPh3)2]NO3 were embedded into nanofibers and their antimicrobial activities on fibers were also investigated.Results: The compounds have been characterized by elemental analyses, IR, NMR (1H-, 31P-) spectroscopy as well as MS measurements. Nanofibers were obtained by electrospinning method which is the simplest and most effective method to produce nanoscale fibers under strong electrical field. Antimicrobial activity of the compound 5, [Ag2{FcP(OMe)S2}2(PPh3)2], and [Cu(PPh3)2]NO3 on fibers were studied.Conclusions: In this study, the new dithiophosphonate ligands were synthesized and utilized in the preparation of copper(I) and silver(I) complexes with ferrocenyldithiophosphonate and triphenylphosphine. Then, the compounds [Ag2{FcP(OMe)S2}2(PPh3)2] and [Cu(PPh3)2]NO3 were added into the PAN solutions (Co-PAN dissolved in dimethylacetamide) and the solutions were electrospun onto microscope slides and PP meltblown surfaces. Antimicrobial activity of the compounds [Ag2{FcP(OMe)S2}2(PPh3)2] and [Cu(PPh3)2]NO3 on fibers were determined in vitro against two indicator strains; M. luteus NCIB and E. coli ATCC25922. The obtained results indicated that these metals showed moderate level antimicrobial activities. © 2014 Karakus et al.; licensee Chemistry Central Ltd

Nomogram for second trimester corpus callosum measurements: are nomograms reliable?

Objective: To define normal values of second trimester fetal corpus callosum (CC) length and width in a low-risk population and to compare the presented nomograms to those in the literature. Methods: The prenatal records of singleton fetuses who underwent second trimester anomaly screening at 18.0–22.0 weeks of pregnancy were retrospectively analyzed for CC width and length. A total of 710 fetuses, whose anomaly scans were completely normal, were included in the study. The correlations between CC and biparietal diameter (BPD), head circumference (HC) and gestational age (GA) were evaluated. Results: At 18.0–22.0 weeks of pregnancy, the mean CC length was 19.7±2.8 mm, while the mean CC thickness was 1.98±0.4 mm. In assessment of the correlations between the CC length and thickness values and the HC, BPD and GA values by Pearson’s correlation coefficient, there was a stronger correlation between the CC length measurements and the BPD, HC and GA values (r=0.233 vs r=0.505, p<0.001). Conclusion: Assessment of the presence of corpus callosum as well as its length and thickness during routine fetal anomaly evaluation may be important owing to the relationship between corpus callosum measurements and certain neurological disorders. Studies indicate that populations should create their own nomograms due to different values reported in the literature

Does maternal serum progesterone level in early pregnancy predict placental dysfunction in third trimester?

Objective Progesterone, which is necessary for maintenance of pregnancy, is secreted by corpus luteum until 10 weeks of gestation, and is produced from the placenta afterwards. Aim of this study is to investigate the relationship of serum progesterone concentrations measured in 6–8 weeks and 12 weeks of gestation with the parameters that may demonstrate placental dysfunction in the third trimester. Methods Relationship of the progesterone values measured at 6–8 weeks and 12 weeks of gestation with indicators of placental dysfunction, including hypertensive disorders of pregnancy, intrauterine growth restriction, preterm delivery and low birth weight, were evaluated. Furthermore, based on a previous study, two groups with progesterone levels below and above 11 ng/mL in early pregnancy were formed, and the difference between these groups regarding gestational outcomes were investigated. Results Progesterone concentrations at 6–8 and 12 weeks of gestation were not significantly different between the subgroups with and without gestational complications indicating placental dysfunction (p>0.05 for all parameters). As for the two groups, significant difference was not found in terms of third trimester complications due to progesterone cut-off of 11 ng/mL at 6-8 weeks of gestation. Conclusion In this study, we did not find progesterone values measured at early and late first trimester periods to be associated with placental dysfunction in the third trimester. Also, we did not validate a previously suggested threshold value to predict gestational outcome. Therefore, routine first trimester progesterone screening in guiding pregnancy follow-up may not be appropriate

Turner syndrome and associated problems in turkish children: A multicenter study

Objective: Turner syndrome (TS) is a chromosomal disorder caused by complete or partial X chromosome monosomy that manifests various clinical features depending on the karyotype and on the genetic background of affected girls. This study aimed to systematically investigate the key clinical features of TS in relationship to karyotype in a large pediatric Turkish patient population. Methods: Our retrospective study included 842 karyotype-proven TS patients aged 0-18 years who were evaluated in 35 different centers in Turkey in the years 2013-2014. Results: The most common karyotype was 45,X (50.7%), followed by 45,X/46,XX (10.8%), 46,X,i(Xq) (10.1%) and 45,X/46,X,i(Xq) (9.5%). Mean age at diagnosis was 10.2±4.4 years. The most common presenting complaints were short stature and delayed puberty. Among patients diagnosed before age one year, the ratio of karyotype 45,X was significantly higher than that of other karyotype groups. Cardiac defects (bicuspid aortic valve, coarctation of the aorta and aortic stenosi) were the most common congenital anomalies, occurring in 25% of the TS cases. This was followed by urinary system anomalies (horseshoe kidney, double collector duct system and renal rotation) detected in 16.3%. Hashimoto’s thyroiditis was found in 11.1% of patients, gastrointestinal abnormalities in 8.9%, ear nose and throat problems in 22.6%, dermatologic problems in 21.8% and osteoporosis in 15.3%. Learning difficulties and/or psychosocial problems were encountered in 39.1%. Insulin resistance and impaired fasting glucose were detected in 3.4% and 2.2%, respectively. Dyslipidemia prevalence was 11.4%. Conclusion: This comprehensive study systematically evaluated the largest group of karyotype-proven TS girls to date. The karyotype distribution, congenital anomaly and comorbidity profile closely parallel that from other countries and support the need for close medical surveillance of these complex patients throughout their lifespan. © Journal of Clinical Research in Pediatric Endocrinology

Hepatitis B And Hepatitis C Seropositivity Rates In Pregnants Who Live In Kırıkkale Region.

ÖZET Amaç: Bu çalışmada Kırıkkale bölgesinde yaşayan gebelerde HBsAg, Anti-HBs, Anti-HCV pozitiflik oranlarını belirlemeyi amaçladık. Gereç ve Yöntemler: Çalışmaya Haziran 2012-Haziran 2014 tarihleri arasında Kırıkkale Üniversitesi Tıp Fakül- tesi Kadın Hastalıkları ve Doğum polikliniğine gebelik takibi nedeniyle başvuran gebelerden HBsAg, Anti-HBs, Anti-HCV sonuçlarına ulaşılabilen hastalar dahil edildi. HBsAg serolojisi yönünden 8442, Anti HBS serolojisi yönünden 3094, Anti-HCV serolojisi yönünden 8120 gebe değerlendirilmiştir. Hastalar 18-30 yaş ve 30 yaş üstü olarak iki gruba ayrılmış olup her iki grubun seropozitiflik oranları karşılaştırılmıştır. Hastalarda HBsAg, Anti-HBs Anti-HCV düzeyleri ELİSA yöntemi ile Kırıkkale Üniversitesi Tıp Fakültesi Enfeksiyon Hastalıkları ve Klinik Mikro- biyoloji laboratuarında çalışılmıştır. Bulgular: Seropozitiflik oranları 18-30 yaş arasında HBsAg için %2,34, 30 yaş üzerinde %4,79, Anti HBs için 18- 30 yaş arası %58,51, 30 yaş üzerinde %29,6, Anti-HCV için 18-30 yaş arası %0,31, 30 yaş üzerinde %0,59 olarak hesaplanmıştır. HBs Ag pozitiflik oranı 30 yaş üstü grupta, 18-30 yaş arası gruba oranla anlamlı olarak daha yüksek (p0,001) bulundu. Anti HBs pozitiflik oranı 30 yaş üstü grupta anlamlı olarak daha düşüktü (p0,001). Anti-HCV pozitiflik oranı da 30 yaş üstü grupta daha yüksek olmakla birlikte bu değer istatistiksel olarak anlamlı değildi (p:0,061). Sonuç: Gebelerde yaptığımız bu çalışmada seropozitiflik oranları sonuçları ülkemizin diğer bölgelerine benzer bulunmuştur. HBsAg seropozitiflik oranında yıllar içinde düşme görülmesi etkin aşılama programlarına atfedi- lebilir. İstatistiksel olarak anlamlı olmasa da düşme eğiliminde olan Anti-HCV pozitifliği ise muhtemelen etkin sterilizasyon ve dezenfeksiyon stratejilerinin sonucudur.Aim: The aim of our study was determine the seroprevalence of HBsAg, Anti-HBs, Anti-HCV in pregnant women living in Kırıkkale city. Material and Methods: HBsAg, Anti-HBs and Anti-HCV results of the pregnant women that admitted to the obstetrics and gynecology clinics between June 2012 and June 2014 were retrospectively investigated. 8442 pregnant women for HBsAg serology , 3094 pregnant women for Anti HBS serology, 8120 pregnant women for Anti-HCV were examined. Patients aged 18-30 years and 30 were divided into two groups and seropositivity rates of the two groups were compared. HBsAg, Anti-HBs and Anti-HCV levels by ELISA method has been studied in Kirikkale University School of Medicine, Infectious Diseases and Clinical Microbiology laboratory. Results: HBsAg positivity were 2.34% in the 18-30 age group and were 4,79% in the above 30 years group; Anti HBs positivity were 58,51% in the 18-30 age group and were 29,6% in the above 30 years group; Anti-HCV positivity were 0,31% in the 18-30 age group and were 0,59% in the above 30 years group. HBs Ag positivity rates were higher in patients over the age of 30 (p<0,001). Anti-HBs positive rate was lower in the group above 30 years of age (p<0,001). Anti-HCV positivity rate was higher in the group above 30 years of age but values were not statistically significant (p:0,061). Conclusion: Results of the study were similar to other regions of our country. HBsAg seropositivity rate decrease may be attributed to the effective vaccination program. Anti-HCV positivity is probably the result of effective sterilization and disinfection strategies