Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 7 de 7
Filtrar
1.
J Infect Dis ; 227(4): 488-497, 2023 02 14.
Artigo em Inglês | MEDLINE | ID: mdl-35325151

RESUMO

BACKGROUND: Age-specific data on anal, and corresponding cervical, human papillomavirus (HPV) infection are needed to inform female anal cancer prevention. METHODS: We centrally reanalyzed individual-level data from 26 studies reporting HPV prevalence in paired anal and cervical samples by human immunodeficiency virus (HIV) status and age. For women with HIV (WWH) with anal high-grade squamous intraepithelial lesions or worse (HSIL+), we also investigated concurrent cervical cytopathology. RESULTS: In HIV-negative women, HPV16 prevalence decreased significantly with age, both at anus (4.3% at 15-24 years to 1.0% at ≥55 years; ptrend = 0.0026) and cervix (7.4% to 1.7%; ptrend < 0.0001). In WWH, HPV16 prevalence decreased with age at cervix (18.3% to 7.2%; ptrend = 0.0035) but not anus (11.5% to 13.9%; ptrend = 0.5412). Given anal HPV16 positivity, concurrent cervical HPV16 positivity also decreased with age, both in HIV-negative women (ptrend = 0.0005) and WWH (ptrend = 0.0166). Among 48 WWH with HPV16-positive anal HSIL+, 27 (56%) were cervical high-risk HPV-positive, including 8 with cervical HPV16, and 5 were cervical HSIL+. CONCLUSIONS: Age-specific shifts in HPV16 prevalence from cervix to anus suggest that HPV infections in the anus persist longer, or occur later in life, than in the cervix, particularly in WWH. This is an important consideration when assessing the utility of cervical screening results to stratify anal cancer risk.


Assuntos
Neoplasias do Ânus , Infecções por HIV , Infecções por Papillomavirus , Lesões Intraepiteliais Escamosas , Neoplasias do Colo do Útero , Humanos , Feminino , Adolescente , Adulto Jovem , Adulto , Colo do Útero/patologia , Papillomavirus Humano , Prevalência , Detecção Precoce de Câncer , Neoplasias do Colo do Útero/epidemiologia , Canal Anal , Neoplasias do Ânus/diagnóstico , Papillomavirus Humano 16 , Papillomaviridae/genética , Infecções por HIV/complicações , Infecções por HIV/epidemiologia , HIV , Fatores Etários
2.
Lancet Infect Dis ; 19(8): 880-891, 2019 08.
Artigo em Inglês | MEDLINE | ID: mdl-31204304

RESUMO

BACKGROUND: Cervical cancer screening might contribute to the prevention of anal cancer in women. We aimed to investigate if routine cervical cancer screening results-namely high-risk human papillomavirus (HPV) infection and cytohistopathology-predict anal HPV16 infection, anal high-grade squamous intraepithelial lesions (HSIL) and, hence, anal cancer. METHODS: We did a systematic review of MEDLINE, Embase, and the Cochrane library for studies of cervical determinants of anal HPV and HSIL published up to Aug 31, 2018. We centrally reanalysed individual-level data from 13 427 women with paired cervical and anal samples from 36 studies. We compared anal high-risk HPV prevalence by HIV status, cervical high-risk HPV, cervical cytohistopathology, age, and their combinations, using prevalence ratios (PR) and 95% CIs. Among 3255 women with anal cytohistopathology results, PRs were similarly calculated for all anal HSIL and HPV16-positive anal HSIL. FINDINGS: Cervical and anal HPV infections were highly correlated. In HIV-negative women, anal HPV16 prevalence was 41% (447/1097) in cervical HPV16-positive versus 2% (214/8663) in cervical HPV16-negative women (PR 16·5, 95% CI 14·2-19·2, p<0·0001); these values were 46% (125/273) versus 11% (272/2588) in HIV-positive women (4·4, 3·7-5·3, p<0·0001). Anal HPV16 was also associated with cervical cytohistopathology, with a prevalence of 44% [101/228] for cervical cancer in HIV-negative women (PR vs normal cytology 14·1, 11·1-17·9, p<0·0001). Anal HSIL was associated with cervical high-risk HPV, both in HIV-negative women (from 2% [11/527] in cervical high-risk HPV-negative women up to 24% [33/138] in cervical HPV16-positive women; PR 12·9, 95% CI 6·7-24·8, p<0·0001) and HIV-positive women (from 8% [84/1094] to 17% [31/186]; 2·3, 1·6-3·4, p<0·0001). Anal HSIL was also associated with cervical cytohistopathology, both in HIV-negative women (from 1% [5/498] in normal cytology up to 22% [59/273] in cervical HSIL; PR 23·1, 9·4-57·0, p<0·0001) and HIV-positive women (from 7% [105/1421] to 25% [25/101]; 3·6, 2·5-5·3, p<0·0001). Prevalence of HPV16-positive anal HSIL was 23-25% in cervical HPV16-positive women older than 45 years (5/20 in HIV-negative women, 12/52 in HIV-positive women). INTERPRETATION: HPV-based cervical cancer screening programmes might help to stratify anal cancer risk, irrespective of HIV status. For targeted secondary anal cancer prevention in high-risk groups, HIV-negative women with cervical HPV16, especially those older than 45 years, have a similar anal cancer risk profile to that of HIV-positive women. FUNDING: International Agency for Research on Cancer.


Assuntos
Neoplasias do Ânus/diagnóstico , Detecção Precoce de Câncer , Infecções por Papillomavirus/diagnóstico , Infecções por Papillomavirus/epidemiologia , Neoplasias do Colo do Útero/diagnóstico , Neoplasias do Ânus/virologia , Feminino , Saúde Global , Soropositividade para HIV , Papillomavirus Humano 16/isolamento & purificação , Humanos , Infecções por Papillomavirus/virologia , Prevalência , Neoplasias do Colo do Útero/virologia
3.
Spine J ; 16(5): e347-51, 2016 05.
Artigo em Inglês | MEDLINE | ID: mdl-26721733

RESUMO

BACKGROUND CONTEXT: Propionibacterium acnes is a gram-positive and facultative anaerobe bacillus that is found within sebaceous follicles of the human skin and recognized as a cause of infections after spinal surgery. To our knowledge, there has been no previously reported case of symptomatic compressive chronic inflammatory epidural mass caused by P. acnes in a patient with no prior spinal procedures. PURPOSE: This study aimed to describe a case of primary spinal infection by P. acnes. STUDY DESIGN: This study is a case report of a condition not previously described in the literature. METHODS: We present the history, physical examination, laboratory, radiographic, and histopathologic findings of a chronic inflammatory epidural mass caused by P. acnes in an immunocompetent adult male with no history of spinal surgery. RESULTS: A 51-year-old man presented to our clinic with sudden onset bilateral lower extremity weakness, inability to ambulate, and urinary retention. His past clinical history was remarkable only for hernia and left knee surgery but no spinal surgery. A year earlier, he had an infected draining abscess of the right axilla that was successfully managed medically. At presentation, his serum erythrocyte sedimentation rate and C-reactive protein were moderately elevated. Pan-spine magnetic resonance imaging was notable for a circumferential epidural mass from C5 to T6. He underwent emergent decompression; the mass was removed and sent for culture and pathologic evaluation. Cultures from all three specimens collected during surgery grew P. acnes, and the patient was successfully managed on intravenous ceftriaxone, while pathology revealed a chronic inflammatory reactive process. CONCLUSIONS: This is the first reported case of a primary spinal mass with chronic inflammatory features caused by P. acnes. In cases of epidural mass of unknown origin, both pathologic specimens and cultures should be obtained as slow-growing organisms may mimic oncologic processes.


Assuntos
Infecções Bacterianas/patologia , Espaço Epidural/microbiologia , Propionibacterium acnes/patogenicidade , Compressão da Medula Espinal/patologia , Infecções Bacterianas/diagnóstico por imagem , Infecções Bacterianas/microbiologia , Espaço Epidural/patologia , Humanos , Masculino , Pessoa de Meia-Idade , Compressão da Medula Espinal/diagnóstico por imagem , Compressão da Medula Espinal/microbiologia
4.
J Acquir Immune Defic Syndr ; 70(4): 400-5, 2015 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-26181818

RESUMO

BACKGROUND: Persons living with HIV are at increased risk for cardiovascular disease in part because of persistent inflammation and coagulation activation. METHODS: We examined whether smoking and heavy episodic alcohol use (defined as 5 or more drinks on one occasion) were associated with greater monocyte activation (soluble CD14) and coagulation (D-dimer) in participants in the Study to Understand the Natural History of HIV and AIDS in the Era of Effective Therapy (the "SUN" Study), a prospective observational cohort. RESULTS: Using regression analysis (n = 689), current smoking compared with nonsmoking was associated with significantly elevated soluble CD14 (B = 135.57, 95% confidence interval: 84.95 to 186.19, P < 0.001), whereas heavy alcohol use compared with nonheavy use was associated with significantly lower D-dimer levels (B = -0.059, 95% confidence interval: -0.102 to -0.016, P = 0.007). CONCLUSIONS: Smoking cessation should be encouraged by HIV care providers to improve mortality outcomes from all causes of death, particularly cardiovascular disease.


Assuntos
Consumo de Bebidas Alcoólicas/efeitos adversos , Produtos de Degradação da Fibrina e do Fibrinogênio/análise , Infecções por HIV/patologia , Receptores de Lipopolissacarídeos/sangue , Fumar/efeitos adversos , Adolescente , Adulto , Idoso , Estudos de Coortes , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Adulto Jovem
5.
Virol J ; 7: 194, 2010 Aug 19.
Artigo em Inglês | MEDLINE | ID: mdl-20723234

RESUMO

BACKGROUND: Human papillomaviruses (HPVs) remain a serious world health problem due to their association with anogenital/oral cancers and warts. While over 100 HPV types have been identified, a subset is associated with malignancy. HPV16 and 18 are the most prevalent oncogenic types, while HPV6 and 11 are most commonly responsible for anogenital warts. While other quantitative PCR (qPCR) assays detect oncogenic HPV, there is no single tube assay distinguishing the most frequent oncogenic types and the most common types found in warts. RESULTS: A Sybr Green-based qPCR assay was developed utilizing degenerate primers to the highly conserved HPV E1 theoretically detecting any HPV type. A single tube multiplex qPCR assay was also developed using type-specific primer pairs and TaqMan probes that allowed for detection and quantitation of HPV6,11,16,18. Each HPV type was detected over a range from 2 x 10(1) to 2 x 10(6)copies/reaction providing a reliable method of quantitating type-specific HPV in 140 anogenital/cutaneous/oral benign and malignant specimens. 35 oncogenic and low risk alpha genus HPV types were detected. Concordance was detected in previously typed specimens. Comparisons to the gold standard detected an overall sensitivity of 89% (95% CI: 77% - 96%) and specificity of 90% (95%CI: 52% - 98%). CONCLUSION: There was good agreement between the ability of the qPCR assays described here to identify HPV types in malignancies previously typed using standard methods. These novel qPCR assays will allow rapid detection and quantitation of HPVs to assess their role in viral pathogenesis.


Assuntos
Líquidos Corporais/virologia , Genitália/virologia , Boca/virologia , Papillomaviridae/isolamento & purificação , Infecções por Papillomavirus/diagnóstico , Reação em Cadeia da Polimerase/métodos , Virologia/métodos , Benzotiazóis , Primers do DNA/genética , Diaminas , Feminino , Humanos , Masculino , Compostos Orgânicos/metabolismo , Papillomaviridae/classificação , Papillomaviridae/genética , Infecções por Papillomavirus/virologia , Quinolinas , Sensibilidade e Especificidade , Coloração e Rotulagem/métodos , Proteínas Virais/genética
6.
Clin Microbiol Rev ; 17(2): 255-67, 2004 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-15084500

RESUMO

The number of indwelling medical devices is escalating, and an increasing proportion of device-related infections are being caused by Candida spp. Candida spp. produce biofilms on synthetic materials, which facilitates adhesion of the organisms to devices and renders them relatively refractory to medical therapy. Management of device-related Candida infections can be challenging. Removal of the infected device is generally needed to establish cure of Candida infections of medical devices. However, since the pathogenesis of Candida bloodstream infection is complicated, more studies are necessary to determine the role of catheter exchange in patients with both gastrointestinal tract mucositis and indwelling catheters. The medical and economic impact of these infections is enormous.


Assuntos
Biofilmes/crescimento & desenvolvimento , Candida/crescimento & desenvolvimento , Candidíase/microbiologia , Equipamentos e Provisões/microbiologia , Humanos
7.
Clin Infect Dis ; 36(1): e7-9, 2003 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-12491223

RESUMO

The enzyme-linked immunoelectrotransfer blot (EITB) has been considered diagnostic of cysticercosis when the results are positive. We describe a patient with a single band at 50 kDa on EITB and neuroimaging abnormalities suggestive of neurocysticercosis but no evidence of exposure to Taenium solium. Autopsy findings excluded neurocysticercosis. We suggest that a single band at 50 kDa on an EITB be considered an equivocal finding rather than diagnostic of cysticercosis.


Assuntos
Cisticercose/diagnóstico , Immunoblotting/métodos , Adulto , Animais , Biomarcadores/análise , Cisticercose/parasitologia , Feminino , Humanos , Técnicas Imunoenzimáticas , Peso Molecular , Taenia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA