• Asian Pacific Journal of Cancer Prevention
• /
• 제14권8호
• /
• pp.4603-4606
• /
• 2013

Background: Cervical cancer, the second most common cancer in women, has a high mortality rate. Cisplatin, an antitumor agent, is generally used for its treatment. However, the administration of cisplatin is associated with side effects and intrinsic resistance. Morinda citrifolia (Noni), a natural plant product, has been shown to have antioxidant activities in vitro and in vivo. Materials and Methods: Both HeLa and SiHa cervical cancer cell lines were treated with 10% Noni, 10 mg/dl cisplatin, or a combination of both 10% Noni and 10 mg/dl cisplatin for 24 hours. Post culturing, the cells were pelleted and stored at $-70^{\circ}C$ for malondialdehyde and catalase assays. Results: On treatment with Noni, CP, and their combination, the level of MDA decreased by 0.76 fold, 0.49 fold, and 0.68 fold respectively in HeLa cells; and by 0.93 fold, 0.67 fold, and 0.79 fold respectively in SiHa cells, as compared to their controls; whereas catalase activity increased by 1.61 fold, 0.54 fold, and 2.35 fold, respectively in HeLa cells; and by 0.98 fold, 0.39 fold, and 1.85 fold respectively in SiHa cells. Conclusions: A decrease in level of lipid peroxidation and an increase in catalase activity were observed with Noni by itself and the effect ameliorated changes observed with cisplatin when given in combination.

• Asian Pacific Journal of Cancer Prevention
• /
• 제17권12호
• /
• pp.5223-5227
• /
• 2016

Background: Cervical cancer is the second most common cancer among women in many populations. While the Pap smear is a well established screening test it suffers from both false-positive and false-negative results in diagnosis of cancers and precancerous states. In this study, immunocytochemistry of the P16 biomarker and HPV-PCR were compared for their diagnostic potential. Materials and methods: In the study, we obtained pairs of specimens from 45 women with cervical dysplasia. One sample was placed in a liquid-based solution, and processed for staining of sections with antibodies to P16. HPV-PCR was performed on the other and the results obtained were analyzed by T-test using SPSS v. 15. Results: Using HPV-PCR 71% of the samples were found to be infected with either HPV 16 or HPV 18, and the rate of infection did not have a statistically significant relationship with higher grades of dysplasia (p= 0.253). In contrast, with immunocytochemistry evaluation of P16, 64% of the specimens were positive, but the percentage of positive results significantly increased with higher grades of dysplasia (p= 0.0001). Conclusion: Employment of the P16 marker as an optional test might be preferable over HPV-PCR for cervical dysplasia in our geographical region.

• Journal of Microbiology
• /
• 제42권4호
• /
• pp.255-266
• /
• 2004

Papillomaviruses infect a wide variety of animals, including humans. The human papillomavirus (HPV), in particular, is one of the most common causes of sexually transmitted disease. More than 200 types of HPV have been identified by DNA sequence data, and 85 HPV genotypes have been well char­acterized to date. HPV can infect the basal epithelial cells of the skin or inner tissue linings, and are, accordingly, categorized as either cutaneous or mucosal type. HPV is associated with a panoply of clin­ical conditions, ranging from innocuous lesions to cervical cancer. In the early 1980s, studies first reported a link between cervical cancer and genital HPV infection. Genital HPV infections are now rec­ognized to be a major risk factor in at least $95\%$ of cervical cancers. 30 different HPV genotypes have been identified as causative of sexually transmitted diseases, most of which induce lesions in the cervix, vagina, vulva, penis, and anus, as the result of sexual contact. There is also direct evidence demon­strating that at least four of these genotypes are prerequisite factors in cervical cancer. The main aim of this review was to evaluate the current literature regarding the pathovirology, diagnostics, vaccines, therapy, risk groups, and further therapeutic directions for HPV infections. In addition, we reviewed the current status of HPV infections in South Korean women, as evidenced by our data.

• Asian Pacific Journal of Cancer Prevention
• /
• 제16권14호
• /
• pp.5869-5873
• /
• 2015

Background: Breast and cervical cancers are among the most frequent and most fatal cancers in women. Life span of patients may be increased and quality of life improved through early diagnosis and treatment. This investigation was performed in order to determine knowledge and practices of female health personnel working at a university hospital regarding breast and cervical cancers. Materials and Methods: This descriptive investigation was performed in Erciyes University Hospitals in 2014. A total of 524 female health personnel were included in the study. Data were collected through a questionnaire of 36 questions prepared by the researchers. The Chi square test and logistic regression were used for statistical analyses. Results: The mean age of the study group was $32.8{\pm}6.9$ years, 18.3% being doctors and 81.7% nurses. Of the study group, 60.5% stated that they performed self breast-examination, 4.4% underwent HPV testing, 26.3% thought about taking an HPV test, 34.7% of those who are 40 years and over had mammography regularly and 19.5% of those who were married had a Pap smear conducted regularly. Most important causes of not performing the methods for early diagnosis of breast and cervical cancers are "forget and neglect". Conclusions: It was concluded that female doctors and nurses do not pay sufficient attention to screening programs for breast and cervical cancers. The importance of early diagnosis and treatment should be emphasized during the undergraduate education and in-service training programs. Health condition of personnel and their utilization of preventive health care should be followed by occupational physicians.

• Asian Pacific Journal of Cancer Prevention
• /
• 제15권16호
• /
• pp.6639-6641
• /
• 2014

Background: To evaluate the clinical significance of atypical squamous cells of undetermined significance (ASCUS) in PAP test in post-menopausal women and compare with reproductive age women. Materials and Methods: A total of 367 patients who referred to our gynecologic oncology clinic were included to the study between September 2012 and August 2013. Data for 164 post-menopausal (group 1) and 203 pre-menopausal (group 2) women with ASCUS cytology were evaluated retrospectively. Immediate colposcopy and endocervical curettage was performed for both groups and conization for all women with a result suggestive of CIN2-3. Histopathological results and demographic features of patients were compared between the two groups. Results: Mean age of the patients was $54.6{\pm}6.5$ years in group 1 and $38{\pm}6.6$ years in group 2. Some 14 (8.5%) of post-menopausal women and 36 (17.7%) of pre-menopausal women were current smokers (p=011). Totals of 38 (23.2%) post-menopausal and 64 (31.5%) pre-menopausal women were assessed for HPV-DNA. High risk HPV was detected in 7 (4.3%) and 21 (10.3%), respectively (p=0.029). Final histopathological results recorded were normal cervix, low grade cervical intra-epithelial neoplasia (CIN 1), and high grade cervical intra-epithelial neoplasia (CIN2-3). In group 1 results were 84.8%, 12.2% and 1.8%, respectively, and in group 2 were 71.9%, 23.2% and 4.9%. There were no cases of micro invasive or invasive cervical carcinoma in either group. Two cases were detected as endometrial carcinoma in the menopausal group (1.2%). Conclusions: In current study we found that preinvasive lesions were statistically significantly higher in pre-menopausal women than post-menopausal women with ASCUS. Cervicitis was more common in menopausal women. Therefore, we think that in case of ASCUS in a post-menopausal woman there is no need for radical management.

• Asian Pacific Journal of Cancer Prevention
• /
• 제15권7호
• /
• pp.3201-3205
• /
• 2014

The aim of this study was to investigate the frequencies of GSTT1 and GSTM1 deletion polymorphisms in newly-diagnosed patients with uterine cervical lesions from central Serbia. Polymorphisms of GST genes were genotyped in 97 patients with cervical lesions and 50 healthy women using a multiplex polymerase chain reaction (PCR). The GSTM1 null genotype was significantly more prominent among the patients than in controls (74.2% vs 56.0%), the risk associated with lesions being almost 2.3-fold increased (OR=2.26, 95%CI=1.10-4.65, p=0.03) and 3.17-fold higher in patients above >45 years old (95%CI=1.02-9.79, p=0.04). The analysis of the two genotypes demonstrated that GSTM1 null genotype significantly increased risk only for low grade squamous intraepithelial lesion-LSIL (OR=2.81, 95%CI=1.03-7.68, p=0.04). GSTT1 null genotype or different genotype combinations were not found to be risk factors, irrespective to lesion stages, age or smoking. We found that the risk of cervical lesions might be significantly related to the GSTM1 null genotype, especially in women aged above 45 years. Furthermore, the GSTM1 polymorphism might have greater role in development of early stage lesions.

• Journal of Microbiology and Biotechnology
• /
• 제33권8호
• /
• pp.1091-1100
• /
• 2023

Human papillomavirus (HPV) types 16 and 18 are the major causes of cervical lesions and are associated with 71% of cervical cancer cases globally. However, public health infrastructures to support cervical cancer screening may be unavailable to women in low-resource areas. Therefore, sensitive, convenient, and cost-efficient diagnostic methods are required for the detection of HPV16/18. Here, we designed two novel methods, real-time ERA and ERA-LFD, based on enzymatic recombinase amplification (ERA) for quick point-of-care identification of the HPV E6/E7 genes. The entire detection process could be completed within 25 min at a constant low temperature (35-43℃), and the results of the combined methods could be present as the amplification curves or the bands presented on dipsticks and directly interpreted with the naked eye. The ERA assays evaluated using standard plasmids carrying the E6/E7 genes and clinical samples exhibited excellent specificity, as no cross-reaction with other common HPV types was observed. The detection limits of our ERA assays were 10⁰ and 10¹ copies/µl for HPV16 and 18 respectively, which were comparable to those of the real-time PCR assay. Assessment of the clinical performance of the ERA assays using 114 cervical tissue samples demonstrated that they are highly consistent with real-time PCR, the gold standard for HPV detection. This study demonstrated that ERA-based assays possess excellent sensitivity, specificity, and repeatability for HPV16 and HPV18 detection with great potential to become robust diagnostic tools in local hospitals and field studies.

• 농촌의학ㆍ지역보건
• /
• 제34권2호
• /
• pp.214-222
• /
• 2009

이 연구는 중장년층 여성의 유방암과 자궁경부암 검진을 위한 지식, 인지된 자기효능감, 의사소통 기술을 향상시키기 위하여 디자인된 암 검진네비게이터 교육의 효과를 평가하기 위해 수행되었다. 암 검진 네비게이터는 건강에 대한 조언을 해주는 이웃으로 지역사회에서 필요한 정보를 제공하고 암 검진에 관한 정서적 지지를 해준다. 연구 대상자는 12시간의 교육을 받은 40-69세의 여성 33명과 대조군 30명이며, 자료 분석은 SPSS 14.0을 이용하여 기술 분석과 paired t-test를 실시하였다. 교육내용은 암 조기검진을 통한 조기치료 성공사례, 유방암 및 자궁경부암 조기검진의 이점, 암 검진을 위한 보건의료 서비스, 암 조기검진 지도자의 역할, 의사소통 기술, 변화단계 이론 및 역할극으로 구성되었다. 본 연구에서 개발된 암 검진 네비게이터 교육 프로그램은 지역사회 자원을 활용하여 암수검률을 향상시키고자 하였고, 지역사회 주민의 암에 관한 지식과 의사소통 기술을 증진시키는데 효과가 있었다. 이는 지역사회 주민의 암 조기검진 수검률 향상을 위해 암 검진 네비게이터를 지속적으로 육성해야 함을 시사한다. 또한 유방암과 자궁경부암에 대한 조기검진 수검률이 낮은 것은 암에 대한 지식수준이 낮고 암 발생의 심각성, 암 검진의 편익에 대한 이해가 부족하므로 더 많은 홍보의 필요성을 시사하며 암 검진 네비게이터의 지속적인 활동이 이와 같은 문제를 해결하는데 일익을 담당할 것으로 사료된다. 따라서 암으로 인한 사망률 감소를 위해서는 암 검진 수검률을 향상시켜야 하며 이를 위해서는 본 연구에서 개발된 암검진 네비게이터 교육 프로그램의 지속적인 확대와 평가가 이루어져야 한다. 이상의 결과를 바탕으로 다음과 같이 제언하는 바이다. 첫째, 본 연구 결과를 타 지역사회에 적용해 보는 반복 연구와, 둘째, 지역적, 문화적 특성 및 암종별 특성을 고려한 교육으로 암 검진 네비게이터 프로그램을 수정 보완한 연구를 제언한다.

• Asian Pacific Journal of Cancer Prevention
• /
• 제17권7호
• /
• pp.3637-3641
• /
• 2016

To determine the prevalence of human papillomavirus (HPV) among women with atypical squamous cells of undetermined significance (ASC-US) referred to colposcopy and the implications for clinical management in low- and middle-income countries (LMIC), the present study was conducted. We included 200 women living in $Maring{\acute{a}}$/Brazil referred to colposcopy service between August 2012 and March 2013 due to an abnormal cytology from ASC-US until high-grade intraepithelial lesion (HSIL). HPV was detected and genotyped by polymerase chain reaction (PCR). The mean age was $36.8{\pm}10.5$ years, and women with and without ASC-US had similar mean ages ($37.4{\pm}11.5$ and $36.4{\pm}9.96$ years, respectively). The highest prevalence of ASC-US occurred at 20-24 years (40%). HPV-DNA was positive in 164 (82.0%) women.Of the 57 women with ASC-US, 30 (52.6%) were HPV-DNA-positive and 21 (70%) were high-risk HPV-positive (HR-HPV); the latter was similar to women without ASC-US (76.9%) but with other abnormal cytological findings present. Our data demonstrated that performing tests for HR-HPV can be used for management of women with ASC-US to support the decision of which women should be referred for an immediate or later colposcopy. The same conclusions can be applied to other LMICs for which HPV testing for primary screening has not been adopted.

• Asian Pacific Journal of Cancer Prevention
• /
• 제16권18호
• /
• pp.8495-8501
• /
• 2016

Purpose: This study was conducted to assess the agreement and differences between cervical self-sampling with a Kato device (KSSD) and gynecologist sampling for Pap cytology and human papillomavirus DNA (HPV DNA) detection. Materials and Methods: Women underwent self-sampling followed by gynecologist sampling during screening at two primary health clinics. Pap cytology of cervical specimens was evaluated for specimen adequacy, presence of endocervical cells or transformation zone cells and cytological interpretation for cells abnormalities. Cervical specimens were also extracted and tested for HPV DNA detection. Positive HPV smears underwent gene sequencing and HPV genotyping by referring to the online NCBI gene bank. Results were compared between samplings by Kappa agreement and McNemar test. Results: For Pap specimen adequacy, KSSD showed 100% agreement with gynecologist sampling but had only 32.3% agreement for presence of endocervical cells. Both sampling showed 100% agreement with only 1 case detected HSIL favouring CIN2 for cytology result. HPV DNA detection showed 86.2%agreement (K=0.64, 95% CI 0.524-0.756, p=0.001) between samplings. KSSD and gynaecologist sampling identified high risk HPV in 17.3% and 23.9% respectively (p=0.014). Conclusion: The self-sampling using Kato device can serve as a tool in Pap cytology and HPV DNA detection in low resource settings in Malaysia. Self-sampling devices such as KSSD can be used as an alternative technique to gynaecologist sampling for cervical cancer screening among rural populations in Malaysia.