Human papillomavirus prevalence and type in liquid-based cervical samples from Turkish women in a selected risk group

Abstract

A series of solid-liquid phase change materials, thiourea derivatives, were prepared via condensation of thiourea with the respective carboxyl chlorides (lauroyl chloride, myristoyl chloride, and palmitoyl chloride) and were then characterized by using FT-IR, 1 H-NMR, differential scanning calorimetry (DSC), and thermogravimetric (TG) analysis. The thiourea derivatives (1,3-didodecanoyl thiourea, 1,3-ditetradecanoyl thiourea, and 1,3-dihexadecanoyl thiourea) were structurally symmetric and had long alkyl groups to crystallize. Thermal analysis by DSC and spectroscopic investigation by FT-IR spectroscopy were performed on the samples before and after thermal cycling tests to determine thermal reliability. The maximum latent heats of melting and freezing of the thiourea derivatives were found to be 114.6 and -110.0 J/g for 1,3didodecanoyl thiourea, 119.5 and -122.4 J/g for 1,3-ditetradecanoyl thiourea, and 148.8 and -142.7 J/g for 1,3-dihexadecanoyl thiourea after accelerated thermal cycling. A TG instrument was used to determine the starting point of degradation in the thiourea derivatives; it was found that the thiourea derivatives degraded at sufficiently higher temperatures than the expected utility temperatures.

High-risk HPV prevalence, HPV types and HPV concordance with concurrently applied liquid-based cervical cytology in HPV-analyzed patients by using real time PCR method.

“…The incidence rate of HPV types differs by geographic region. [5,6,14] In our study, HPV 16 was the most frequently seen type of HPV, with a prevalence of 12.2%, followed by HPV 31 (6.2%), HPV 51 (5.3%), and HPV 18 (4.3%). Our results were similar to those of other studies performed in our country and in other areas of the world.…”

“…[10] In studies on the prevalence of HPV-infection in women and the distribution of HPV types performed worldwide, differences in the rate of HPV infection have been reported to range between 6.1% and 45.6%, depending on factors such as geographic region and age. [5,6,11] In Turkey, the largest relevant multicenter series was performed by Dursun et al [1] In their study, the authors detected an HPV prevalence of 25%. In other studies, HPV prevalence rates have ranged between 17.9% and 67.7%.…”

“…[4] Globally, the prevalence of HPV infection in various communities varies between 2% and 44 %. [5] In our country, among low-risk women, the prevalence of HPV ranges between 1.5% and 32.1%. [2] A bimodal age distribution pattern for HPV infection has been reported in some studies.…”

Concordance of the frequency, typing, and results of high risk human papilloma virus in cervical cytology materials with biopsy: Retrospective analysis of 5604 patients

“…The prevalence of HPV varies significantly from country to country, with a frequency ranging from 2 to 44% (8).…”

The Frequency and Typing of Human Papilloma Virus Among Women with Normal and Abnormal Cytology in Southern Khorasan, Eastern Iran

“…Despite the screening programs that have been introduced to reduce the mortality and morbidity of the disease, it is estimated that 500,000 cases occur annually and that 50% cases lead to death worldwide (2). Today, it has been proved that the etiologic cause of cervical cancer is the human papilloma virus (HPV) (3); a double stranded DNA virus belonging to the Papillomaviridae family with more than 100 types (4).…”