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| 1 | Clinical significance of'anti-HBc alone'in human immunodeficiency virus-positive patients显示文摘AIM:To determine the prevalence and clinical relevance of isolated antibodies to hepatitis B core antigen as the only marker of infection('anti-HBc alone')among human immunodeficiency virus(HIV) type-1 infected patients.Occult hepatitis B infection frequency was also evaluated. METHODS:Three hundred and forty eight histories from 2388 HIV-positive patients were randomly reviewed.Patients with serological markers of hepatitis B virus(HBV)infection were classified into three groups:past hepatitis,'anti-HBc alone'and chronic hepatitis.Determination of DNA from HBV,and RNA and genotype from hepatitis C virus(HCV)were performed on'anti-HBc alone'patients. RESULTS:One hundred and eighty seven(53.7%) HIV-positive patients had markers of HBV infection: 118 past infection(63.1%),14 chronic hepatitis (7.5%)and 55'anti-HBc alone'(29.4%).Younger age[2.3-fold higher per every 10 years younger;95% confidence intervals(CI)1.33-4.00]and antibodies to HCV infection[odds ratio(OR)2.87;95%CI 1.10-7.48]were factors independently associated with the'anti-HBc alone'pattern.No differences in liver disease frequency were detected between both groups. Serum levels of anti-HBs were not associated with HCV infection(nor viral replication or HCV genotype),or with HIV replication or CD4 level.No'anti-HBc alone' patient tested positive for HBV DNA. CONCLUSION:'Anti-HBc alone'prevalence in HIVpositive patients was similar to previously reported data and was associated with a younger age and with antibodies to HCV infection.In clinical practice,HBV DNA determination should be performed only in those patients with clinical or analytical signs of liver injury. | M~aTeresa Pérez-Rodríguez Bernardo Sopea Manuel Crespo Alberto Rivera Teresa González del Blanco Antonio Ocampo César Martínez-Vázquez | 2009 | World Journal of Gastroenterology2009，15，10： | 2 |
| 2 | Incidence of childhood cancer among Mexican children registered under a public medical insurance program显示文摘 | Roberto Rivera‐Luna Cecilia Correa‐González Eduardo Altamirano‐Alvarez Fernando Sánchez‐Zubieta Rocio Cárdenas‐Cardós Gabriela Escamilla‐Asian Alberto Olaya‐Vargas Aurora Bautista‐Marquez Manuel Aguilar‐Romo | 2012 | Int. J. Cancer2012，，： | 1 |
| 3 | Influence of left ventricular mass, uremia and hypertension on vagal tachycardic reserve显示文摘 | Luca Mircoli Rodolfo Rivera Giuseppe Bonforte Luigi Fedele Simonetta Genovesi Maurizio Surian Alberto U Ferrari | 2003 | Journal of Hypertension2003，，8： | 1 |
| 4 | Vitiligo: complex segregation and linkage disequilibrium analyses with respect to microsatellite loci spanning the HLA显示文摘 | Mauricio Arcos-Burgos Elba Parodi Marta Salgar Elina Bedoya Juan Builes Diego Jaramillo Gabriel Ceballos Alberto Uribe Natalia Rivera Dora Rivera Idalyd Fonseca Mauricio Camargo Luis Palacio | 2002 | Human Genetics2002，，4： | 1 |
| 5 | Characterization of oral yeasts isolated from healthy individuals attended in different Colombian dental clinics显示文摘The aim of this study was to identify the most frequent yeasts in the oral cavity of adult individuals without immune disorders and to associate the presence of these oral yeasts with different characteristics of each individual. Oral rinse samples were obtained from 96 healthy adults and cultured in Sabouraud dextrose agar media and CHROMagar. Yeasts were identified by sequencing the D1/D2 region of the 28 S rRNA gene. Probable association among the socio-demographic characteristics, body mass index, family and personal medical history,oral hygiene, tobacco and/or alcohol consumption habits and presence of oral fungi was analyzed. Contingency tables and logistic regression were employed to evaluate possible relationships between the presence of oral fungi and mixed colonization with these variables. 57.3% of the healthy individuals had oral yeasts and 21.8% had mixed colonization. The most prevalent yeasts were Candida albicans(52%), C. parapsilosis(17.9%), and C.dubliniensis(7.57%). Yeasts with most frequently mixed colonization were C. albicans and C. parapsilosis. No relationships were found among the variables analyzed. However, the presence of mixed colonization was related to the presence of dental prostheses(P<0.006), dental apparatuses(P=0.016) and O’Leary index(P=0.012). This is the first study that characterized oral yeasts in Colombian healthy individuals, determined the most prevalent oral yeasts C. albicans, C. parapsilosis and C. dublinensis and an association of mixed colonization with the use of dental prostheses and aparatology and poor hygiene. | Raul Eduardo Rivera Alejandra Zuluaga Karen Arango Itzjak Kadar Paola Andrea Pinillos Luis Fernando Montes Eugenia Catalina Cepeda Ernesto Gonzalez Pedro Antonio Alfonso Andrea Alejandra Villalba Luis Fernando Casanova Adolfo Perez Armando Roa Martha Jhoana Arias Jorge Orlando Francisco Cuellar Lorena Pedraza Adiel Alberto Vasquez Blanca Lynne Suarez Beatriz LGomez Catalina De Bedout Luz Elena Cano | 2019 | The Journal of Biomedical Research2019，33，5： | 0 |
| 6 | Foliar Analysis as an Estimate on the Nutritional State of Conilon Coffee Plantations on Cambisoils显示文摘 | Alberto Perez Diaz Emesto Castaneda Hidalgo Salvador Lozano Trejo Carlos Alberto Bustamante Gonzailez Ramon Antonio Rivera Espinosa Geraldo Rodriguez Ortiz Gloria Martha Martin Alonso Cerelino RoblesPerez Guillermo Acosta Coutin Alberto Fernandez Turro | 2014 | Journal of Life Sciences2014，8，2： | 0 |
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