Home Print this page Email this page Small font sizeDefault font sizeIncrease font size
Users Online: 2086

 

Home About us Editorial board Search Ahead of print Current issue Archives Submit article Instructions Subscribe Advertise Contacts Login 
     

  Table of Contents  
ORIGINAL ARTICLE
Year : 2014  |  Volume : 55  |  Issue : 6  |  Page : 495-498  

Human papilloma virus 16/18 genotypes in patients with squamous cell carcinoma of cervix in northeast Iran


1 Department of Hematology and Blood Bank, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
2 Department of Radiation Oncology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
3 Department of Internal Medicine, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
4 Department of Internal Medicine, Cancer Molecular Pathology Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran

Date of Web Publication14-Nov-2014

Correspondence Address:
Mohammad Hadi Sadeghian
Department of Hematology and Blood Bank, Cancer Molecular Pathology Research Center, Ghaem Hospital, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad
Iran
Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0300-1652.144706

Rights and Permissions
   Abstract 

Background: A relation has been established between infection with high-risk types of human papilloma virus (HPV) and development of cervical cancer. To estimate the risk of HPV infection for cervical malignancies, we conducted a case-control study in northeast Iran. Materials and Methods: This study was carried out on 123 paraffin embedded blocks with exact diagnosis of squamous cell carcinoma (SCC). A total of 100 cervical tissue specimens with normal histopathology product of hysterectomy were also used as control. Both groups were tested for the presence of HPV DNA and HPV 16/18 subtypes using PCR assay. Results: Large non-keratinising subtype of cervical carcinoma was the most frequent one (62.6%), followed by keratinising and small cell subtypes (27% and 10%, respectively). Overall prevalence of HPV infection in SCC of cervix was 34.2% (42 out of 123 cases). HPV 16 was the most common type in this group (21 cases, 17.1%), followed by HPV 18 (16 cases, 13%) and other subtypes (5 cases, 4.1%). In this study, overall prevalence of HPV infection in control group was 12% (including 3% HPV 16; 5% HPV 18 and 4% other subtypes). Conclusion: Although association of HPV 16/18 and SCC of cervix was relatively higher than control group, compared with the previous study, the association between cervical SCC and HPV infection was significantly lower in our study; and possibly, the other risk factors play a major role in carcinogenesis of cervical carcinoma in this region.

Keywords: HPV 16/18, HPV, PCR, SCC of cervix


How to cite this article:
Ayatollahi H, Homaei-Shandiz F, Kooshyar MM, Tabatabaee-Yazdi SA, Mehrjerdian M, Jafarian AH, Sadeghian MH, Keramati MR, Ghasemian-Moghadam HR, Sheikhi M. Human papilloma virus 16/18 genotypes in patients with squamous cell carcinoma of cervix in northeast Iran. Niger Med J 2014;55:495-8

How to cite this URL:
Ayatollahi H, Homaei-Shandiz F, Kooshyar MM, Tabatabaee-Yazdi SA, Mehrjerdian M, Jafarian AH, Sadeghian MH, Keramati MR, Ghasemian-Moghadam HR, Sheikhi M. Human papilloma virus 16/18 genotypes in patients with squamous cell carcinoma of cervix in northeast Iran. Niger Med J [serial online] 2014 [cited 2019 Nov 15];55:495-8. Available from: http://www.nigeriamedj.com/text.asp?2014/55/6/495/144706


   Introduction Top


Squamous cell carcinoma (SCC) of cervix is one of the most frequent malignancies in women, and causes considerable morbidity. Indeed, cervical malignancies are the second most common cancer in women worldwide and the fifth most prevalent malignancy among Iranian females. [1],[2],[3] It is predicted that 607,402 new cases of cervical cancer and 320,832 attributable deaths will occur among women during 2015 worldwide. [4] Based on World Health Organisation (WHO) annual report on 2010, Iran has a population of about 25 millions women aged above 15 years and who are at risk of developing cervical cancer. Current estimates indicate that every year 643 women are diagnosed with cervical cancer and 286 die from the disease in Iran. Unfortunately, there is no exact data about the human papilloma virus (HPV) burden in the general population of Iran. However, rough estimations about cervical HPV infection in general population, based on the incidence of infection in the countries of this region (Southern Asia), is about 7.9% at a given time. [5]

So far, multiple factors have been evaluated to define the effect and role of them in cervical carcinogenesis. Factors including smoking, use of oral contraceptives, high parity, certain human leukocyte antigen (HLA) subtypes, immunosuppression, multiple partners and sexually transmitted diseases have been introduced as predisposing or risk factor of cervical carcinoma. [6] HPV infection is the most notorious among them; as some studies have demonstrated that the persistence of HPV DNA is a necessary factor for the development of cervical SCCs. The association between certain HPVs, so-called high risk HPVs, and cervical cancer is well documented. HPV 16 and HPV 18 are the most important in cervical pathology. HPV 16 is detected in about 60% of cervical cancer cases, and HPV 18 accounts for 10% of cases. [7],[8] It seems there is no geographic variation in the distribution of HPV types. [9]

Currently, the most sensitive and reliable method for detection of HPV infection is PCR assay. Most laboratories use consensus primers, directed to a conserved L1 gene, and hence able to detect all mucosal HPV types. These primers includes GP5-GP6 set and MY09-MY11 set, which detect a region of L1 gene. [10],[11]

The objective of the present study was to evaluate the prevalence of HPV infection in cervical SCCs and to estimate the relative risk according to HPV 16/18 infection and cervical invasive SCC.


   Materials and Methods Top


This descriptive cross-sectional case-control study was performed on 123 formalin fixed paraffin embedded (FFPE) blocks of cervical tissue specimens with histopathologic diagnosis of cervical invasive SCC in molecular pathology laboratory, Ghaem Hospital, Mashhad, Iran. The FFPE blocks were retrieved from Mashhad educational hospitals (Qaem, Imam reza, and Omid's pathology department) archive from five recent years. Two histopathologists reviewed slides for confirming diagnosis and selecting the best paraffin blocks for DNA extraction and for assurance of consistency and quality of our materials. In parallel, 100 blocks of paraffin embedded cervical tissue specimens with normal histopathology and no tumoral tissue was used as the control group.

Cervical tissue specimens cut in 6 micro sections using separate disposable items such as gloves, blades and tubes to avoid any cross contamination between samples. To isolate DNA, at least 3 sections were deparaffinised by Xylene and dried tissue was incubated overnight at 56°C in a solution composed of 50 mM Tris-HCl (pH 7.5), 10 mM EDTA, 0.5% sodium dodecyl sulphate, 50 mM NaCl and 300 μg/mL of proteinase K. Proteinase K was inactivated at 95°C for 10 min. The samples were centrifuged for 3 min at 12,000 rpm and finally the supernatant was undergone extensive extraction by phenol/chloroform (1:1 ratio) to use for PCR. The reaction was performed in a 1.5 ml microtubes with re-suspended DNA, 20 mM Tris-HCl (pH 8.3), 8 mM MgCl2, 7.5 mM DTT, 200 μM of each dNTP, 20 pmol of each primer and 0.25 U of Taq DNA polymerase. DNA concentrations were measured by nanodrop.

First, the extracts were checked for DNA quality by amplification of the human β-Actin gene. In all samples, HPV detection was performed by GP5+/GP6+ primers [Table 1]; and eventually, positive cases for common HPV DNA assay were tested for identification of HPV 16 and HPV 18 subtypes using primers for HPV 16 and HPV 18 specific target sequences. [11],[12],[13] General HPV positive cases with HPV 16/18 negative results were of low risk type, as confirmed by Genpack ® .
Table 1: Characteristics of primers used in this study

Click here to view


Forty cycles of amplification were done using Applied Biosystems thermocycler. Standard PCR protocol consisted of a denaturation step at 94°C for 30 s, followed by a primer annealing step at 50°C for 1 min, and a chain elongation step at 72°C for 30 s for each cycle. Eventually, the amplification product was analysed by 2% agarose gel electrophoresis.


   Results Top


A total of 123 patients with SCC of cervix were included in this study; mean age was 49.8 years (ranging from 25 to 80 years) with a peak in the 40-50 years age group (35.8%). The most frequent SCC subtype was large non-keratinising type (77 cases, 62.6%) followed by keratinising (33 cases, 27%) and small cell type (13 cases, 10.4%). HPV DNA was found in 42 out of 123 patients (34.1%) and 12 out of 100 cases (12%) in controls [Table 2].
Table 2: Frequencies of HPV 16 and 18 in squamous cell carcinoma of cervix

Click here to view


High risk HPV infection was significantly higher in SCC cases than controls (odd ratio = 4.9; 95% CI =2.18-11.22) including 21 HPV 16 positive in cases compared with 3 in controls (odd ratio = 6.65; 95% CI = 1.92-22.03) and 16 HPV 18 positive in cases compared with 5 in controls (odd ratio = 2.84; 95% CI = 1.00-8.05).

Low risk HPV DNA was found in 5 of 123 cases of SCC compared with 4 of 100 in controls. There was no significant difference between cases and controls in low risk HPV infection (odd ratio = 1.01; 95% CI = 0.26-2.89).


   Discussion Top


It has been shown that some viruses associate with the pathogenesis of various benign lesions and some malignant neoplasms such as cervical cancer. [14],[15],[16],[17] Currently, there are increasing evidences that confirm the multi-factorial nature of carcinogenesis through different molecular biologic pathways. Many studies overemphasise on the role of high risk HPV infection in the development and progression of cervical carcinoma, considering the existence of this entity without HPV infection impossible or exceptional. [18],[19],[20]

The overall frequency of HPV infection in our study group was 34.2% (30.1% considering high-risk type HPVs). This figure is much lower than what was reported in Mazandaran province, Iran, (78.6%), [21] Brazil (76%), [22] South Korea (90.3%) [23] and other countries ranging over at least 65% of cases. [11],[24],[25],[26],[27]

This significant discrepancy may be, at least to some extent, due to formaldehyde fixation effect on PCR product result, especially for products less than 200 bp (including GP5/GP6), and eventually false negative results. [11],[22] Therefore, it is possible that if fresh specimens had been examined, HPV positive cases might have been higher. Moreover, recent studies have suggested the possibility of false negative results mainly in high grade squamous intraepithelial neoplasia and invasive SCC, and detection of HPV DNA by multiple methods or multiple primers may be conclusive and lead to a higher rate results. [7],[23]

In contrast, multiparity and especially the age at first intercourse are common risk factors of cervical carcinoma and HPV infection simultaneously. Therefore, HPV positive cases with cervical SCC would be seen more frequent in regions with this high risk sexual habit. The other possible reason is the lower frequency of HPV infection in this region, which may cause overriding of the other risk factors effect over the HPV infection effect in carcinogenesis statistically.


   Conclusions Top


Although association of HPV 16/18 and SCC of cervix was relatively higher than control group (odd ratio = 4.9; 95% CI = 2.18-11.22); compared with the previous study, the association between cervical SCC and HPV infection was significantly lower in this study; and other risk factors may play a major role in carcinogenesis of cervical carcinoma in this region.


   Acknowledgements Top


This study was the result of a residency thesis and financially supported by the research Vice Chancellor of Mashhad University of Medical Sciences. The authors would like to thank them and also Mr. Mahmoud Bagheri for performing PCR.

 
   References Top

1.
Hassumi-Fukasawa MK, Miranda-Camargo FA, Zanetti BR, Galano DF, Ribeiro-Silva A, Soares EG. Expression of BAG-1 and PARP-1 in precursor lesions and invasive cervical cancer associated with human papillomavirus (HPV). Pathol Oncol Res 2012;18:929-37.  Back to cited text no. 1
    
2.
Tavakkol-Afshari J, Brook A, Mousavi SH. Study of cytotoxic and apoptogenic properties of saffron extract in human cancer cell lines. Food Chem Toxicol 2008;46:3443-7.  Back to cited text no. 2
    
3.
Kolahdoozan S, Sadjadi A, Radmard AR, Khademi H. Five common cancers in Iran. Arch Iran Med 2010;13:143-6.  Back to cited text no. 3
    
4.
de Oliveira CM, Fregnani JH, Carvalho JP, Longatto-Filho A, Levi JE. Human papillomavirus genotypes distribution in 175 invasive cervical cancer cases from Brazil. BMC Cancer 2013;13:357.  Back to cited text no. 4
    
5.
Human Papillomavirus and Related Cancers. WHO/ICO HPV information center. Summary Report Update. 3 rd ed. 2010.  Back to cited text no. 5
    
6.
Hedrick-Ellenson L, Pirog EC. The female genital tract. In: Kumar V, Abbas AK, Fausto N, editors. Robbins and Cotran Pathologic Basis of Disease. 8 th ed. Pennsylvania: Elsevier Saunders;2010. p. 1019.  Back to cited text no. 6
    
7.
Salvia PN, Bergo SM, Bonesso-Sabadini PI, Tagliarini EB, Hackel C, De Angelo Andrade LA. Correlation between histological criteria and human papillomavirus presence based on PCR assay in cervical biopsies. Int J Gynecol Cancer 2004;14:126-32.  Back to cited text no. 7
    
8.
Rosai J. Rosai and Ackerman's Surgical Pathology. 10 th ed., Vol. 2. Edinburgh, New York: Mosby;2011. p. 1447.  Back to cited text no. 8
    
9.
Bosch FX, Manos MM, Munoz N, Sherman M, Jansen AM, Peto J, et al. Prevalence of human papillomavirus in cervical cancer: A worldwide perspective. International biological study on cervical cancer (IBSCC) Study Group. J Natl Cancer Inst 1995;87:796-802.  Back to cited text no. 9
    
10.
Garland SM, Tabrizi S. Methods for HPV detection: Polymerase chain reaction assays. In: Monsonego J, editor. Emerging Issues on HPV Infections: From Science to Practice. Basel: Karger;2006. p. 63-72.  Back to cited text no. 10
    
11.
Baay MF, Quint WG, Koudstaal J, Hollema H, Duk JM, Burger MP, et al. Comprehensive study of several general and type-specific primer pairs for detection of human papillomavirus DNA by PCR in paraffin-embedded cervical carcinomas. J Clin Microbiol 1996;34:745-7.  Back to cited text no. 11
    
12.
Griffin NR, Bevan IS, Lewis FA, Wells M, Young LS. Demonstration of multiple HPV types in normal cervix and in cervical squamous cell carcinoma using the polymerase chain reaction on paraffin wax embedded material. J Clin Pathol 1990;43:52-6.  Back to cited text no. 12
    
13.
Hong D, Lu W, Ye F, Hu Y, Xie X. Gene silencing of HPV16 E6/E7 induced by promoter-targeting siRNA in SiHa cells. Br J Cancer 2009;101:1798-804.  Back to cited text no. 13
    
14.
Pezeshkpoor F, Jafarian AH, Ghazvini K, Yazdanpanah MJ, Sadeghian A, Esmaili H, et al. An association of human papillomaviruses low risk and high risk subtypes with skin tag. Iran J Basic Med Sci 2012;15:840-4.  Back to cited text no. 14
    
15.
Sadeghian MH, Ayatollahi H, Keramati MR, Memar B, Jamedar SA, Avval MM, et al. The association of Epstein-Barr virus infection with multiple myeloma. Indian J Pathol Microbiol 2011;54:720-4.  Back to cited text no. 15
[PUBMED]  Medknow Journal  
16.
Keramati MR, Sadeghian MH, Ayatollahi H. Clinical and laboratory features in adult T-cell leukemia/lymphoma in Khorasan, Iran. Leuk Lymphoma 2010;51:727-9.  Back to cited text no. 16
    
17.
Nayereh KG, Khadem G. Preventive and therapeutic vaccines against human papillomaviruses associated cervical cancers. Iran J Basic Med Sci 2012;15:585-601.  Back to cited text no. 17
    
18.
Walboomers JM, Meijer CJ. Do HPV-negative cervical carcinomas exist? J Pathol 1997;181:253-4.  Back to cited text no. 18
    
19.
Isaakidis P, Pimple S, Varghese B, Khan S, Mansoor H, Ladomirska J, et al. HPV infection, cervical abnormalities, and cancer in HIV-infected women in Mumbai, India: 12-month follow-up. Int J Womens Health 2013;5:487-94.  Back to cited text no. 19
    
20.
Park JY, Lee KH, Dong SM, Kang S, Park SY, Seo SS. The association of pre-conization high-risk HPV load and the persistence of HPV infection and persistence/recurrence of cervical intraepithelial neoplasia after conisation. Gynecol Oncol 2008;108:549-54.  Back to cited text no. 20
    
21.
Hamkar R, Azad TM, Mahmoodi M, Seyedirashti S, Severini A, Nategh R. Prevalence of human papilloma virus in Mazandaran Province, Islamic Republic of Iran. East Mediterr Health J 2002;8:805-11.  Back to cited text no. 21
    
22.
Rabelo-Santos SH, Zeferino L, Villa LL, Sobrinho JP, Amaral RG, Magalhães AV. Human papilloma virus prevalence among women with cervical intraepithelial neoplasia III and invasive cervical cancer from Goiania, Brazil. Mem Inst Oswaldo Cruz 2003;198:181-4.  Back to cited text no. 22
    
23.
Hwang TS, Jeong JK, Park M, Han HS, Choi HK, Park TS. Detection and typing of HPV genotypes in various cervical lesions by HPV oligonucleotide microarray. Gynecol Oncol 2003;90:51-6.  Back to cited text no. 23
    
24.
Torroella-Kouri M, Morsberger S, Carrillo A, Mohar A, Meneses A, Ibarra M, et al. HPV prevalence among Mexican women with neoplastic and normal cervixes. Gynecol Oncol 1998;70:115-20.  Back to cited text no. 24
    
25.
Hindryckx P, Garcia A, Claeys P, Gonzalez C, Velasquez R, Bogers J, et al. Prevalence of high risk human papillomavirus types among Nicaraguan women with histological proved pre-neoplastic and neoplastic lesions of the cervix. Sex Transm Infect 2006;82:334-6.  Back to cited text no. 25
    
26.
Unger ER, Vernon SD, Lee DR, Miller DL, Reeves WC. Detection of human papillomavirus in archival tissues. Comparsion of in situ hybridization and polymerase chain reaction. J Histochem Cytochem 1998;46:535-40.  Back to cited text no. 26
    
27.
Noronha V, Mello W, Villa L, Brito A, Macêdo R, Bisi F, et al. Human papillomavirus associated with uterine cervix lesions. Rev Soc Bras Med Trop 1999;32:235-40.  Back to cited text no. 27
    



 
 
    Tables

  [Table 1], [Table 2]


This article has been cited by
1 Correlation of human papillomavirus 16 and 18 with cervical cancer and their diagnosis methods in Iranian women: A systematic review and meta-analysis
Mona Fani,Pegah Mahmoodi,Maryam Emadzadeh,Amir Avan,Ehsan Karimi,Gordon A. Ferns,Majid Rezayi,Iraj S Amiri
Current Problems in Cancer. 2019;
[Pubmed] | [DOI]
2 Human papillomavirus DNA, HPV L1 capsid protein and p16INK4a protein as markers to predict cervical lesion progression
Huiyan Hu,Jingjing Zhao,Wen Yu,Junwei Zhao,Zhewei Wang,Lin Jin,Yunyun Yu,Lingfei Han,Lu Wang,Huiting Zhu,Fang Li
Archives of Gynecology and Obstetrics. 2018;
[Pubmed] | [DOI]
3 A systematic review and meta-analysis on the attribution of human papillomavirus (HPV) in neuroendocrine cancers of the cervix
Philip E. Castle,Amanda Pierz,Mark H. Stoler
Gynecologic Oncology. 2017;
[Pubmed] | [DOI]
4 Cloning and Expression of L1 Protein Human Papillomavirus Type 31 Isolated from Iranian Patients inEscherichia coli
Sameh Hajmohammadi,Hossein Rassi
Monoclonal Antibodies in Immunodiagnosis and Immunotherapy. 2016;
[Pubmed] | [DOI]
5 Human Papillomavirus Genotyping and p16INK4aExpression in Cervical Lesions: A Combined Test to Avoid Cervical Cancer Progression
Yassine Zouheir,Taoufiq Fechtali,Nadia Elgnaoui
Journal of Cancer Prevention. 2016; 21(2): 121
[Pubmed] | [DOI]



 

Top
  
 
  Search
 
    Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
    Access Statistics
    Email Alert *
    Add to My List *
* Registration required (free)  

 
  In this article
    Abstract
   Introduction
    Materials and Me...
   Results
   Discussion
   Conclusions
   Acknowledgements
    References
    Article Tables

 Article Access Statistics
    Viewed1407    
    Printed20    
    Emailed0    
    PDF Downloaded112    
    Comments [Add]    
    Cited by others 5    

Recommend this journal