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1.
Tumour Biol ; 35(12): 12765-73, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25213701

RESUMO

Prostate cancer is the most common neoplasm found in males and the second most frequent cause of cancer-related mortality in males in Greece. Among other pathogens, the detection frequency of human papillomavirus (HPV) has been found to be significantly increased in tumor tissues among patients with sexually transmitted diseases (STDs), depending on the geographical distribution of each population studied. The present study focused on the detection of HPV and the distribution of Arg72Pro p53 polymorphism in a cohort of healthy individuals, as well as prostate cancer patients. We investigated the presence of HPV in 50 paraffin-embedded prostate cancer tissues, as well as in 30 physiological tissue samples from healthy individuals by real-time PCR. Furthermore, the same group of patients was also screened for the presence of the Arg72Pro polymorphism of the p53 gene, a p53 polymorphism related to HPV. Out of the 30 control samples, only 1 was found positive for HPV (3.33 %). On the contrary, HPV DNA was detected in 8 out of the total 50 samples (16 %) in the prostate cancer samples. The distribution of the three genotypes, Arg/Arg, Arg/Pro, and Pro/Pro, was 69.6, 21.7, and 8.7 % in the cancer patients and 75.0, 17.86, and 7.14 % in healthy controls, respectively. No statistically significant association was observed between the HPV presence and the age, stage, p53 polymorphism status at codon 72, or PSA. The increased prevalence of HPV detected in the prostate cancer tissues is in agreement with that reported in previous studies, further supporting the association of HPV infection and prostate cancer.


Assuntos
Alphapapillomavirus/genética , Códon , Infecções por Papillomavirus/complicações , Polimorfismo Genético , Neoplasias da Próstata/genética , Neoplasias da Próstata/virologia , Proteína Supressora de Tumor p53/genética , Idoso , Substituição de Aminoácidos , Estudos de Casos e Controles , Grécia , Humanos , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Neoplasias da Próstata/patologia
2.
Arch Esp Urol ; 72(9): 948-954, 2019 Nov.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-31697256

RESUMO

OBJECTIVE: To examine the predictive value of osteocalcin (OC) and C-terminal telopeptide (CTX) levels for jaw osteonecrosis in high-risk prostate cancer (PCa) patients taking bisphosphonates (BPs). METHODS: Twenty-four patients were prospectively recruited in this study and followed from 2011 to 2015. All patients were diagnosed with metastatic PCa with secondary bone deposits and were on androgen deprivation therapy (ADT). All participants were started on 4mg of zoledronic acid intravenously every 4 weeks for two years. The patients were reviewed every three months with full blood count, blood biochemistry, PSA and measurement of OC and CTX. Patients also underwent dental/oral examination. OC and CTX levels in serum were calculated using the ELISA method. RESULTS: A significant decrease in PSA levels was found (ß=-0.06, SE=0.02, p=0.006). The levels of OC (ß=-0.46, SE=0.14, p=0.001) and CTX (ß=-0.01, SE=0.004, p=0.007) also decreased significantly during the two years of follow up. Osteonecrosis of the jaw was identified in three patients at two years. Patients with osteonecrosis also showed a decrease in OC and CTX levels. The mean OC reduction was 77.3% for patients with osteonecrosis and 12.6% for patients without osteonecrosis. The mean CTX reduction was 44.1% for patients with osteonecrosis and 9.62% for patients without osteonecrosis. CONCLUSION: Our study demonstrated no clear association between the levels of serum OC and CTX and bisphosphonate-related osteonecrosis of the jaw (BRONJ). To date, there is no clinically useful biomarker for the prediction of jaw osteonecrosis. More studies are needed using different bone turnover markers in order to identify patients at risk for BRONJ.


OBJETIVO: Examinar el valor predictivo de los niveles de osteocalcina (OC) y telopéptido C terminal (TCT) para la osteonecrosis mandibular en pacientes con cáncer de próstata de alto riesgo en tratamiento con bifosfonatos.MÉTODOS: Veintidós pacientes fueron reclutados prospectivamente en este estudio y seguidos desde 2011 a 2015. Todos los pacientes tenían el diagnóstico de CaP de próstata de alto riesgo con depósitos óseos secundarios y seguían tratamiento de deprivación androgénica (TDA). Todos los pacientes comenzaron con 4 mg de ácido zolendrónico IV cada 4 semanas durante 2 años. Los pacientes siguieron revisiones cada tres meses con hemograma, bioquímica sanguínea, PSA y mediciones de OC y TCT. Los pacientes fueron sometidos a evaluación dental/oral. Los niveles de OC y TCT en suero fueron medidos utilizando un método de ELISA. RESULTADOS: Se encontró un descenso significativo de los niveles de PSA (ß=-0,06, SE=0,02, p=0,006). Los niveles de OC (ß=-0,46, SE=0,14, p=0,001) y TCT ß=-0,01, SE=0,004, p=0,007) también disminuyeron significativamente durante los dos años de seguimiento. Se identificó osteonecrosis en tres pacientes en dos años. Los pacientes con osteonecrosis de mandíbula en tres pacientes a los dos años. Los pacientes con osteonecrosis también mostraron un descenso de los niveles de OC y TCT. La reducción media de OC fue del 77,3% en los pacientes con osteonecrosis y 12,6% en los pacientes sin osteonecrosis. La reducción media de TCT fue del 44,1% en los pacientes con osteonecrosis y 9,62% en los pacientes sin osteonecrosis. CONCLUSIONES: Nuestro estudio no demuestra una clara asociación entre los niveles séricos de OC y TCT y la osteonecrosis mandibular relacionada con bifosfonatos. Hasta la fecha, no hay un marcador clínico útil para la predicción de la osteonecrosis mandibular. Son necesarios más estudios utilizando diferentes marcadores de renovación ósea para identificar los pacientes en riesgo de osteonecrosis mandibular relacionada con bifosfonatos.


Assuntos
Osteonecrose da Arcada Osseodentária Associada a Difosfonatos , Conservadores da Densidade Óssea , Osteocalcina , Peptídeos , Neoplasias da Próstata , Antagonistas de Androgênios , Osteonecrose da Arcada Osseodentária Associada a Difosfonatos/diagnóstico , Conservadores da Densidade Óssea/uso terapêutico , Colágeno Tipo I , Difosfonatos , Humanos , Masculino , Osteocalcina/sangue , Peptídeos/sangue , Valor Preditivo dos Testes , Estudos Prospectivos , Neoplasias da Próstata/tratamento farmacológico
3.
Arch. esp. urol. (Ed. impr.) ; 72(9): 948-954, nov. 2019. tab, graf
Artigo em Inglês | IBECS (Espanha) | ID: ibc-188474

RESUMO

OBJECTIVE: To examine the predictive value of osteocalcin (OC) and C-terminal telopeptide (CTX) levels for jaw osteonecrosis in high-risk prostate cancer (PCa) patients taking bisphosphonates (BPs). METHODS: Twenty-four patients were prospectively recruited in this study and followed from 2011 to 2015. All patients were diagnosed with metastatic PCa with secondary bone deposits and were on androgen deprivation therapy (ADT). All participants were started on 4 mg of zoledronic acid intravenously every 4 weeks for two years. The patients were reviewed every three months with full blood count, blood biochemistry, PSA and measurement of OC and CTX. Patients also underwent dental/oral examination. OC and CTX levels in serum were calculated using the ELISA method. RESULTS: A significant decrease in PSA levels was found (β= - 0.06, SE = 0.02, p = 0.006). The levels of OC (β = -0.46, SE = 0.14, p = 0.001) and CTX (β = -0.01, SE = 0.004, p = 0.007) also decreased significantly during the two years of follow up. Osteonecrosis of the jaw was identified in three patients at two years. Patients with osteonecrosis also showed a decrease in OC and CTX levels. The mean OC reduction was 77.3% for patients with osteonecrosis and 12.6% for patients without osteonecrosis. The mean CTX reduction was 44.1% for patients with osteonecrosis and 9.62% for patients without osteonecrosis. CONCLUSION: Our study demonstrated no clear association between the levels of serum OC and CTX and bisphosphonate-related osteonecrosis of the jaw (BRONJ). To date, there is no clinically useful biomarker for the prediction of jaw osteonecrosis. More studies are needed using different bone turnover markers in order to identify patients at risk for BRONJ


Objetivo: Examinar el valor predictivo de los niveles de osteocalcina (OC) y telopéptido C terminal (TCT) para la osteonecrosis mandibular en pacientes con cáncer de próstata de alto riesgo en tratamiento con bifosfonatos. Métodos: Veintidós pacientes fueron reclutados prospectivamente en este estudio y seguidos desde 2011 a 2015. Todos los pacientes tenían el diagnóstico de CaP de próstata de alto riesgo con depósitos óseos secundarios y seguían tratamiento de deprivación androgénica (TDA). Todos los pacientes comenzaron con 4 mg de ácido zolendrónico IV cada 4 semanas durante 2 años. Los pacientes siguieron revisiones cada tres meses con hemograma, bioquímica sanguínea, PSA y mediciones de OC y TCT. Los pacientes fueron sometidos a evaluación dental/oral. Los niveles de OC y TCT en suero fueron medidos utilizando un método de ELISA. Resultados: Se encontró un descenso significativo de los niveles de PSA (β = -0,06, SE = 0,02, p = 0,006). Los niveles de OC (β = -0,46, SE = 0,14, p = 0,001) y TCT β = -0,01, SE = 0,004, p = 0,007) también disminuyeron significativamente durante los dos años de seguimiento. Se identificó osteonecrosis en tres pacientes en dos años. Los pacientes con osteonecrosis de mandíbula en tres pacientes a los dos años. Los pacientes con osteonecrosis también mostraron un descenso de los niveles de OC y TCT. La reducción media de OC fue del 77,3% en los pacientes con osteonecrosis y 12,6% en los pacientes sin osteonecrosis. La reducción media de TCT fue del 44,1% en los pacientes con osteonecrosis y 9,62% en los pacientes sin osteonecrosis. Conclusiones: Nuestro estudio no demuestra una clara asociación entre los niveles séricos de OC y TCT y la osteonecrosis mandibular relacionada con bifosfonatos. Hasta la fecha, no hay un marcador clínico útil para la predicción de la osteonecrosis mandibular. Son necesarios más estudios utilizando diferentes marcadores de renovación ósea para identificar los pacientes en riesgo de osteonecrosis mandibular relacionada con bifosfonatos


Assuntos
Humanos , Masculino , Osteonecrose da Arcada Osseodentária Associada a Difosfonatos/diagnóstico , Conservadores da Densidade Óssea/uso terapêutico , Osteocalcina/sangue , Peptídeos/sangue , Neoplasias da Próstata/tratamento farmacológico , Antagonistas de Androgênios , Colágeno Tipo I , Difosfonatos , Valor Preditivo dos Testes , Estudos Prospectivos
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