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Dive into the research topics where Mayda Martínez Rodríguez is active.

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Infection | 1992

Hepatitis C virus infection in patients with acute hepatitis B

Mayda Martínez Rodríguez; C.A. Navascués; A. Suárez; N. G. Sotorrio; Antonio Linares; Ruben Perez; Luis Rodrigo; Ana Alonso Martinez; R. Cimadevilla

The prevalence of antibodies to hepatitis C virus (anti-HCV) was studied using a second-generation ELISA test in 121 patients with self-limiting acute hepatitis B, including 63 intravenous drug addicts (IVDA). Within the first month after the onset of illness, 47.1% of the patients were anti-HCV positive, this figure reaching 52.1% six months later. The prevalence in the sixth month was significantly higher in the IVDA (93.6%) than in the non-IVDA (6.9%) (p<0.00001). Among the IVDA, anti-HCV was more frequent in those with (100%) than in those without hepatitis delta virus (HDV) coinfection (84.6%) (p=0.004). Of the 63 anti-HCV positive patients, 36 (57.1%) continued to exhibit abnormal transmainase levels for more than six months, while this was not observed in anti-HCV negative patients. These results show a high prevalence of infection by hepatitis C virus (HCV) in IVDA with acute B hepatitis. As a rule, infection by HCV occurred prior to the hepatitis B infection, although occasionally simultaneous infections were observed. HCV appears to be the agent responsible for chronic liver disease in patients with acute B hepatitis who become HBsAg negative. Bei 121 Patienten mit akuter, spontan heilender Hepatitis B, unter denen auch 63 intravenös Drogenabhängige waren, wurden mit einem ELISA-Test der zweiten Generation auf Hepatitis C-Virus-Antikörper untersucht. Im ersten Monat nach Krankheitsbeginn waren 47,1% der Patienten anti-HCV-positiv, sechs Monate später 52,1%. Bei den intravenös Drogenabhängigen war die Antikörperprävalenz nach sechs Monaten mit 93,6% signifikant höher als bei den nicht Drogenabhängigen (6,9%; p=0,00001). Drogenabhängige mit Koinfektion durch Hepatitis Delta-Virus waren zu 100% anti-HCV-positiv, ohne Delta Virus-Infektion zu 84,6% (p=0,004). Bei 36 der 63 anti-HCV-positiven Patienten (57,1%) waren länger als sechs Monate pathologisch erhöhte Transaminasenspiegel festzustellen. Bei anti-HCV- negativen Patienten war dies nicht der Fall. Diese Ergebnisse belegen, daß bei intravenös Drogenabhängigen mit akuter Hepatitis B häufig eine HCV- Infektion vorliegt. Bei den meisten war die HCV-Infektion vor der B-Hepatitis aufgetreten, in einigen Fällen war eine simultane Infektion festzustellen. HCV scheint für die chronische Lebererkrankung bei Patienten mit akuter B- Hepatitis, die HBsAg-negativ werden, verantwortlich zu sein.SummaryThe prevalence of antibodies to hepatitis C virus (anti-HCV) was studied using a second-generation ELISA test in 121 patients with self-limiting acute hepatitis B, including 63 intravenous drug addicts (IVDA). Within the first month after the onset of illness, 47.1% of the patients were anti-HCV positive, this figure reaching 52.1% six months later. The prevalence in the sixth month was significantly higher in the IVDA (93.6%) than in the non-IVDA (6.9%) (p<0.00001). Among the IVDA, anti-HCV was more frequent in those with (100%) than in those without hepatitis delta virus (HDV) coinfection (84.6%) (p=0.004). Of the 63 anti-HCV positive patients, 36 (57.1%) continued to exhibit abnormal transmainase levels for more than six months, while this was not observed in anti-HCV negative patients. These results show a high prevalence of infection by hepatitis C virus (HCV) in IVDA with acute B hepatitis. As a rule, infection by HCV occurred prior to the hepatitis B infection, although occasionally simultaneous infections were observed. HCV appears to be the agent responsible for chronic liver disease in patients with acute B hepatitis who become HBsAg negative.ZusammenfassungBei 121 Patienten mit akuter, spontan heilender Hepatitis B, unter denen auch 63 intravenös Drogenabhängige waren, wurden mit einem ELISA-Test der zweiten Generation auf Hepatitis C-Virus-Antikörper untersucht. Im ersten Monat nach Krankheitsbeginn waren 47,1% der Patienten anti-HCV-positiv, sechs Monate später 52,1%. Bei den intravenös Drogenabhängigen war die Antikörperprävalenz nach sechs Monaten mit 93,6% signifikant höher als bei den nicht Drogenabhängigen (6,9%; p=0,00001). Drogenabhängige mit Koinfektion durch Hepatitis Delta-Virus waren zu 100% anti-HCV-positiv, ohne Delta Virus-Infektion zu 84,6% (p=0,004). Bei 36 der 63 anti-HCV-positiven Patienten (57,1%) waren länger als sechs Monate pathologisch erhöhte Transaminasenspiegel festzustellen. Bei anti-HCV- negativen Patienten war dies nicht der Fall. Diese Ergebnisse belegen, daß bei intravenös Drogenabhängigen mit akuter Hepatitis B häufig eine HCV- Infektion vorliegt. Bei den meisten war die HCV-Infektion vor der B-Hepatitis aufgetreten, in einigen Fällen war eine simultane Infektion festzustellen. HCV scheint für die chronische Lebererkrankung bei Patienten mit akuter B- Hepatitis, die HBsAg-negativ werden, verantwortlich zu sein.


Revista Española de Patología | 2008

Invaginación del Sigmoide. Presentación de un caso. Breve revisión de la literatura

Walter Marcial Martínez Rodríguez; María de los Ángeles Miló Anillo; Olga Forteza Trujillo; Ana Gloria Pérez Reyes; Mayda Martínez Rodríguez; Raúl Rúa Martínez

Resumen Caso clinico Presentamos, dada su rareza, un caso de invaginacion del sigmoide cronica sin aparente causa organica subyacente de intususcepcion, de mas de 10 anos de evolucion, que fue interpretado como una neoplasia maligna de colon izquierdo, termina como un cuadro de oclusion intestinal y muere finalmente en un fallo multiple de organos. Discusion Se revisa brevemente la literatura.


Revista Española de Patología | 2008

Branquioma maligno. Presentación de un caso y revisión de la literatura

Walter Marcial Martínez Rodríguez; Aurora Velásquez Martínez; Magali Rodríguez Concepción; Olga Forteza Trujillo; Mayda Martínez Rodríguez; Raúl Rúa Martínez; Ana Gloria Pérez Reyes

SUMMARY Introduction: The hypothesis that some malignant lesions from the lateral region of the neck could de velop from branchial clefts was proposed in 1882 by Von Volk- man. Martin H. et al. defined malignant tumours originating from vestigial remmanants of this structures. Many of them are epithelial as branchiogenic carcinoma However, they precise that these tumors must be called malignant bran- chiomas because they can also originate from the conective tissue of the cystic wall. Method: A case of malignant bran- chioma in a 52 years old, white male is reported. The patient presented a latero-cervical c yst. Fine Needle Aspiration Cytology (FNAC) and an excisional biopsy were perfor- med. Samples were stained with hematoxylin and eosin and Massons Trichrome. Results: A dignosis of consistent with malignant branchioma based on Martin H s criteria modi- fied by Khafif RA w as made. An other possible primary tumor was not found at any location. In this way, the diag- nosis of malignant branchioma was confirmed. At the pre- sent time, the patient is free of disease and without eviden- ce of other primary tumor of nasopharynx or elsewhere. An analytic review of the literature was made.


Archive | 2016

Branquioma maligno. Presentación de un caso y revisión de la literatura Malignant branchioma. A case report and a review of the literature

Walter Marcial Martínez Rodríguez; Aurora Velásquez Martínez; Magali Rodríguez Concepción; Olga Forteza Trujillo; Mayda Martínez Rodríguez; Raúl Rúa Martínez; Ana Gloria; Pérez Reyes


Journal of Hepatology | 2016

Analysis of the Frequency and Risk Factors Associated with Failure in Early Detection of Hepatocellular Carcinoma in a Surveillance Program in Patients with Cirrhosis

A. Mancebo; M.L. González-Diéguez; Valle Cadahía; C.A. Navascués; A. Castaño; Manuel Varela; Mayda Martínez Rodríguez


Journal of Hepatology | 2015

P0379 : Cancer related symptoms (performance status 0 vs 1) determine prognosis of hepatocellular carcinoma patients treated with sorafenib. Analysis of a prospective data collection in 207 patients

M. Varela; M. Reig; C. Álvarez Navascués; Alejandro Forner; Valle Cadahía; Alba Díaz; M.L. González-Diéguez; N. Llarch; Mayda Martínez Rodríguez; Jordi Bruix


Archive | 2008

Branquioma maligno. Presentacin de un caso y revisin de la literatura

Walter Marcial Martínez Rodríguez; Aurora Velásquez Martínez; Magali Rodríguez Concepción; Olga Forteza Trujillo; Mayda Martínez Rodríguez; Raúl Rúa Martínez; Ana Gloria Pérez Reyes


Archive | 2008

Invaginacin del Sigmoide. Presentacin de un caso. Breve revisin de la literatura

Walter Marcial Martínez Rodríguez; María de los Ángeles Miló Anillo; Olga Forteza Trujillo; Ana Gloria Pérez Reyes; Mayda Martínez Rodríguez; Raúl Rúa Martínez


Archive | 2008

Invaginación del Sigmoide. Presentación de un caso. Breve revisión de la literatura Sigmoid invagination. Case report. Brief literature review

Walter Marcial; Martínez Rodríguez; Olga Forteza Trujillo; Ana Gloria; Pérez Reyes; Mayda Martínez Rodríguez; Raúl Rúa Martínez


Revista Mexicana De Fisica | 2006

Simulación de la estenosis pulmonar y la regurgitación tricúspide mediante un modelo eléctrico del sistema cardiovascular humano

K. Gomez; A. D'alessandro Martinez; Mayda Martínez Rodríguez

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K. Gomez

Simón Bolívar University

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Alba Díaz

University of Barcelona

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Jordi Bruix

University of Barcelona

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