Viruses and Human Cancer

نویسنده

  • John B Liao
چکیده

The cause of human cancer is probably multifactorial and the role of viruses is unclear. The study of retroviruses has led to the identification of oncogenes responsible for transformation and tumor induction. Human viruses associated with malignancies include the JC virus (associated with progressive multifocal leukoencephalopathy) and some adenoviruses. No human malignancies have been associated with the latter group. A number of herpes viruses of lower animals have been associated with malignancies and herpes simplex virus type 2 has been associated with carcinoma of the cervix and vulva. The Epstein-Barr virus has been associated with Burkitt's lymphoma and nasopharyngeal carcinoma. Some circumstantial evidence suggests that cytomegalovirus may be associated with Kaposi's sarcoma among homosexuals. The hepatitis B virus (HBV) has been associated with hepatocellular carcinoma. The fullfillment of Koch's postulates presents ethical problems regarding man and proving the viral etiology of human malignancy. Social experiments may elucidate some of these questions. An increase in venereal herpes should be associated with an increase in carcinoma of the cervix and use of the HBV vaccine in populations with high incidences of HBV carrier states should decrease the incidence of hepatocellular carcinoma. The investigation of the retroviruses though not establishing viruses as causing human malignancies at least will improve our understanding of the malignant process.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Detection of human papilloma viruses type 16 and 18 by PCR and RFLP in paraffin-embedded cervical cancer tissue specimens

  Human papillomaviruses (HPVs) infect mucosal and cutaneous epithelia and cause malignant and benign neoplastic lesions. Human papillomaviruses cause 250000 deaths per year from cervical cancer most often in developing countries. This major public health problem make them important targets in the search for Human papillomaviruses detection methods that may play a role in cervical cancer screen...

متن کامل

Human Reoviruses Serotype 3 Effectively Target Huh-7 Cells

Abstract: Background  and  Aims:  Huh-7  is  a  cell  line  that  was  derived  from  a  liver  tumor  of  a  Japanese  man.  Hepatocellular  carcinoma  (HCC)  is  considered  as  a  primary  liver  cancer.  Highly  resistant  tumor  to  treatment  which  causes  the  death  of  many  patients  annually.  Thus,  targeting  the  cancer  cells  by  using  a  new  method  could  be  effective  in...

متن کامل

Cancer virotherapy: Targeting cancer cells by microRNA mechanism for selective replication of oncolytic viruses in these cells

Cancer, as one of the most serious public health problems, is the second-leading cause of death in the world after cardiovascular disease. The number of patients and the resulting mortality are increasing worldwide; therefore, early diagnosis, prevention, and effective treatment of cancer are very important. Current treatments such as chemotherapy and radiation therapy are often non-selective a...

متن کامل

The relationship between Human Papillomavirus and Epstein-Barr virus infections with breast cancer of Iranian patients

Background: Breast cancer is the malignancy in humans and other mammals. Several risk factors are involved in their appearance such as higher hormone levels and obesity. Identification of a mouse mammary tumor virus supports a viral etiology for breast tumors in animals. Viruses have been implicated in the development of various cancers, but viral induction for formation breast cancer is contro...

متن کامل

Casual role of infectious agents in cancer: An overview

Cancer is a complex group of diseases with multiple eventual causes. The underlying causes are not fully known. Thus, learning more about the known causes of cancer is an important issue. Moreover, among these factors, infection and its association to cancers is controversial. Although, it seems that the genome instability of the cells can initiate cancer development. The purpose of this review...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • The Yale Journal of Biology and Medicine

دوره 79  شماره 

صفحات  -

تاریخ انتشار 1983