Superficial nuclear enlargement without koilocytosis as an expression of human papillomavirus infection of the uterine cervix: an in situ hybridization study

The impact of HPV infection on human glycogen and lipid metabolism - a review

Reinterpretation of the Wartburg effect leads to understanding aerobic glycolysis as a process that provides considerable amount of molecular precursors for the production of lipids, nucleotides and amino acids that are necessary for continuous growth and rapid proliferation characteristic for cancer cells. Human papilloma virus (HPV) is a number one cause of cervical carcinoma with 99% of the cervical cancer patients being HPV positive. This tight link between HPV and cancer raises the question if and how HPV impact cells to reprogram their metabolism? Focusing on early phase proteins E1, E2, E5, E6 and E7 we demonstrate that HPV activates plethora of metabolic pathways and directly influences enzymes of the glycolysis pathway to promote the Warburg effect by increasing glucose uptake, activating glycolysis and pentose phosphate pathway, increasing the level of lactate dehydrogenase A synthesis and inhibiting β-oxidation. Our considerations lead to conclusion that HPV is substantially involved in metabolic cell reprogramming toward neoplastic phenotype and its metabolic activity is the fundamental reason of its oncogenicity.

Papillomavirus-associated balanoposthitis

OBJECTIVE

To assess whether there might be an association between genital papillomavirus infection (GPVI) and balanoposthitis.

DESIGN

Retrospective HPV DNA examination of biopsy specimens from 23 men suffering from balanoposthitis and exhibiting acetowhite lesions that were penoscopically and histologically concurrent with HPV infection.

SETTING

The STD clinics at Karolinska Hospital and South Hospital, Stockholm, Sweden.

PARTICIPANTS

Randomly selected men attending with long-lasting and/or recurrent penile symptoms and exhibiting a clinical picture of balanoposthitis, who revealed a penoscopical and histopathological picture of epidermal lesions that were concordant with accepted criteria for typical or conspicuous GPVI. Asymptomatic controls were selected retrospectively on the basis of identical penoscopy and histology criteria.

RESULTS

A history of previous condylomata was obtained in eight (35%) of 23 men. At penoscopic evaluation tiny condylomatous lesions were observed in five (22%) patients. The in situ hybridisation (ISH) assay using specific probes for the HPV types 6/11, 16/18, 31/33 and 42 was positive in 13/23 (56%) of the patient samples, but in only 26% of the 19 control samples. In patient biopsies the oncogenic HPV types 16/18 and/or 31/33 were found in 7/13 samples, whereas HPV 6/11 and/or 42 were present in another six cases. PCR performed on the ten ISH negative patient biopsies, were negative in all cases.

CONCLUSION

Symptoms included redness, itching, burning, tenderness, dyspareunia, fissuring and in two cases penile oedema and inguinal adenopathy. All patients fulfilled penoscopical and histopathological criteria for HPV infection. We demonstrate some tentative evidence that HPV might be associated with long-lasting balanoposthitis, although our data still are circumstantial for a causative association. The results also elucidate the diversity in clinical presentation of GPVI.