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1.
Acta Virol ; 62(4): 350-359, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30472864

RESUMO

It has been previously reported that adenovirus 36 (Ad36) infection is associated with obesity in humans and other animals. However, there is no clinically available standard protocol to detect Ad36 DNA. In this study, we developed a method for quantitative and rapid detection of Ad36 DNA. Using a TaqMan probe quantitative polymerase chain reaction (qPCR), we identified that the E3 and E4orf1 regions specifically detect Ad36 DNA, because these regions did not show cross reactivity with other types of adenoviruses. The limit of detection was 379 copy/ml and 384 copy/ml for E3 and E4orf1 regions of Ad36, respectively. The %CV (coefficient of variation) for reproducibility of the assay using adenovirus reference material ranged from 1.07-13.02. After we developed the standard protocol to detect Ad36 DNA, we used mouse as a surrogate model to confirm its clinical applicability. We administered Ad36 to mice via intranasal and oral routes, with intraperitoneal administration as the positive control, to analyze the effect of infection route. Ad36 DNA could be detected in lungs, liver, pancreas, and epididymal fat tissue after intraperitoneal injection, whereas it was found only in lungs after intranasal injection. No Ad36 DNA was detectable in any tested organ after oral injection. This indicates that the main route of infection with Ad36 is intranasal, suggesting that Ad36 is a respiratory virus. The standard protocol for qPCR developed in this study is useful for clinical detection of Ad36 DNA. Keywords: adenovirus 36; real-time PCR; obesity.


Assuntos
Infecções por Adenoviridae , Adenoviridae , Obesidade , Reação em Cadeia da Polimerase , Adenoviridae/genética , Infecções por Adenoviridae/virologia , Animais , Humanos , Camundongos , Obesidade/virologia , Reprodutibilidade dos Testes
2.
Int J Obes (Lond) ; 41(10): 1601-1605, 2017 10.
Artigo em Inglês | MEDLINE | ID: mdl-28607454

RESUMO

Obesity impairs glycemic control and causes insulin resistance and type 2 diabetes. Adenovirus 36 (Ad36) infection can increase the uptake of excess glucose from blood into adipocytes by increasing GLUT4 translocation through the Ras-Akt signaling pathway, which bypasses PI3K-Akt-mediated insulin receptor signaling. E4orf1, a viral gene expressed early during Ad36 infection, is responsible for this insulin-sparing effect and may be an alternative target for improving insulin resistance. To deliver the gene to adipocytes only, we connected the adipocyte-targeting sequence (ATS) to the 5' end of E4orf1 (ATS-E4orf1). In vitro transfection of ATS-E4orf1 into preadipocytes activated factors for GLUT4 translocation and adipogenesis to the same extent as did Hemagglutinin (HA)-E4orf1 transfection as positive reference. Moreover, the Transwell migration assay also showed that ATS-E4orf1 secreted by liver cells activated Akt in preadipocytes. We used a hydrodynamic gene delivery technique to deliver ATS-E4orf1 into high-fat diet-fed and streptozotocin-injected mice (disease models of type 2 and type 1 diabetes, respectively). ATS-E4orf1 improved the ability to eliminate excess glucose from the blood and ameliorated liver function in both disease models. These findings suggest that ATS-E4orf1 has insulin-sparing and fungible effects in type 2 and 1 diabetes independent of the presence of insulin.


Assuntos
Proteínas E4 de Adenovirus/metabolismo , Adipócitos/metabolismo , Diabetes Mellitus Experimental/metabolismo , Diabetes Mellitus Tipo 1/metabolismo , Diabetes Mellitus Tipo 2/metabolismo , Insulina/metabolismo , Obesidade/metabolismo , Proteínas E4 de Adenovirus/genética , Animais , Técnicas de Cultura de Células , Diabetes Mellitus Experimental/virologia , Diabetes Mellitus Tipo 1/virologia , Diabetes Mellitus Tipo 2/virologia , Dieta Hiperlipídica , Modelos Animais de Doenças , Transportador de Glucose Tipo 4/metabolismo , Resistência à Insulina/fisiologia , Ligantes , Masculino , Camundongos , Obesidade/fisiopatologia , Fosfatidilinositol 3-Quinases/metabolismo , Transporte Proteico , Transdução de Sinais
3.
Acta Virol ; 60(3): 298-306, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27640440

RESUMO

Obesity is a metabolic disease characterized by low-level chronic inflammation. Obese individuals are susceptible to infection by viruses, and vaccination against these pathogens is less effective than in nonobese individuals. Here, we sought to explore the immunological environment in a mouse model of obesity induced by a high-fat diet (HFD). HFD treatment increased the body weight and epididymal fat mass. The proportion of activated B cells, T cells, and macrophages was similar between mice in the HFD group and the regular-fat diet (RFD) group. The Th1 cell subpopulation in the HFD group was increased, whereas the proportion of Treg cells was reduced compared with the RFD group. Moreover, T-cell proliferation and cytokine production did not differ between the groups when cells were stimulated with anti-CD3 and anti-CD28 antibodies in vitro. In macrophages, phagocytic activity was higher in mice fed an HFD than in those fed an RFD, but expression levels of CD86 and MHC class II antigens were similar. When macrophages were cultured in vitro, the proportion of CD86-expressing macrophages was lower in those isolated from mice in the HFD group than in those isolated from the RFD group. Furthermore, lipopolysaccharide-induced interleukin 6 (IL-6) and tumor necrosis factor alpha secretions were significantly reduced in macrophages isolated from the HFD group. In addition, influenza vaccine-induced antibodies in the HFD group diminished more rapidly than in the RFD group. These results suggest that poor functionality of macrophages during obesity might contribute to a reduction in vaccine efficacy.


Assuntos
Anticorpos Antivirais/sangue , Dieta/efeitos adversos , Gorduras na Dieta/administração & dosagem , Vacinas contra Influenza/imunologia , Macrófagos/fisiologia , Obesidade/imunologia , Animais , Citocinas/efeitos dos fármacos , Citocinas/metabolismo , Gorduras na Dieta/efeitos adversos , Lipopolissacarídeos , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Obesidade/etiologia
4.
Int J Obes (Lond) ; 40(3): 460-70, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26395748

RESUMO

BACKGROUND: Various pathogens are implicated in the induction of obesity. Previous studies have confirmed that human adenovirus 36 (Ad36) is associated with increased adiposity, improved glycemic control and induction of inflammation. The Ad36-induced inflammation is reflected in the infiltration of macrophages into adipose tissue. However, the characteristics and role of adipose tissue macrophages (ATMs) and macrophage-secreted factors in virus-induced obesity (VIO) are unclear. Although insulin-like growth factor-1 (IGF-1) is involved in obesity metabolism, the contribution of IGF secreted by macrophages in VIO has not been studied. METHODS: Four-week-old male mice were studied 1 week and 12 weeks after Ad36 infection for determining the characteristics of ATMs in VIO and diet-induced obesity (DIO). In addition, macrophage-specific IGF-1-deficient (MIKO) mice were used to study the involvement of IGF-1 in VIO. RESULTS: In the early stage of VIO (1 week after Ad36 infection), the M1 ATM sub-population increased, which increased the M1/M2 ratio, whereas DIO did not cause this change. In the late stage of VIO (12 weeks after Ad36 infection), the M1/M2 ratio did not change because the M1 and M2 ATM sub-populations increased to a similar extent, despite an increase in adiposity. By contrast, DIO increased the M1/M2 ratio. In addition, VIO in wild-type mice upregulated angiogenesis in adipose tissue and improved glycemic control. However, MIKO mice showed no increase in adiposity, angiogenesis, infiltration of macrophages into adipose tissue, or improvement in glycemic control after Ad36 infection. CONCLUSIONS: These data suggest that IGF-1 secreted by macrophages may contribute to hyperplasia and hypertrophy in adipose tissue by increasing angiogenesis, which helps to maintain the 'adipose tissue robustness'.


Assuntos
Infecções por Adenoviridae/patologia , Adenoviridae/metabolismo , Tecido Adiposo/metabolismo , Inflamação/patologia , Fator de Crescimento Insulin-Like I/metabolismo , Macrófagos/metabolismo , Obesidade/patologia , Animais , Modelos Animais de Doenças , Hiperplasia/patologia , Hipertrofia/patologia , Ativação de Macrófagos , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Obesidade/metabolismo
5.
J Obstet Gynaecol ; 35(1): 79-81, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25093908

RESUMO

The aim of this study was to evaluate the reliability of using tumour grade and cell type on preoperative endometrial biopsy for the selection of patients for conservative hormone treatment. We retrospectively reviewed results of 643 patients with endometrial carcinoma for tumour grade and 817 for tumour cell type who underwent endometrial biopsy followed by surgery. Of the 357 patients with a grade 1 tumour on preoperative endometrial biopsy, 58 (16.2%) were upgraded based on a final pathology report from hysterectomy specimens. For grade 1, the preoperative endometrial biopsy showed a sensitivity of 80.4%, a specificity of 78.6%, a positive predictive value (PPV) of 83.8% and a negative predictive value (NPV) of 74.5%. Of the 672 patients with the endometrioid cell type on preoperative biopsy, 46 (5.6%) showed a different cell type on final pathology. For the endometrioid cell type, preoperative endometrial biopsy had a sensitivity of 91.3%, a specificity of 64.9%, a PPV of 93.2% and an NPV of 58.6%. This weak predictive value should be considered when selecting patients for conservative hormone treatment.


Assuntos
Carcinoma Endometrioide/patologia , Neoplasias do Endométrio/patologia , Endométrio/patologia , Biópsia/estatística & dados numéricos , Feminino , Humanos , Cuidados Pré-Operatórios , Estudos Retrospectivos
7.
Int J Obes (Lond) ; 38(11): 1470-4, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-24614097

RESUMO

Human adenovirus 36 (Ad36) is positively associated with obesity in humans and animals. Ad36 infection is characterized by increased adiposity and inflammation. To investigate the possibility that a prophylactic vaccine candidate might protect against Ad36-induced obesity and inflammation, we purified Ad36 and ultraviolet-irradiated virus to obtain a vaccine candidate. After immunizing the mice with the vaccine candidate (vaccinated group), live Ad36 was injected into mice as a challenge test. Unvaccinated mice (control group) were immunized with phosphate-buffered saline and then challenged with live Ad36. Fourteen weeks after challenge, we compared adiposity and inflammation in vaccinated and control mice. The control group showed 17% greater body weight and 20% more epididymal fats compared with the vaccinated group. In addition, the vaccinated group had decreased serum levels of pro-inflammatory cytokines, and infiltrated immune cells, especially M1 macrophages, in fat tissue. Therefore, the vaccine candidate for Ad36 was able to protect against Ad36-increased body weight and fat as well as inflammatory states after challenge. These results provide proof-of-concept for prophylactic vaccination against virus-induced adiposity.


Assuntos
Infecções por Adenoviridae/imunologia , Adenoviridae/patogenicidade , Adipócitos/virologia , Inflamação/virologia , Obesidade/virologia , Vacinas Virais , Infecções por Adenoviridae/complicações , Adipócitos/metabolismo , Animais , Inflamação/prevenção & controle , Camundongos , Camundongos Endogâmicos C57BL , Obesidade/prevenção & controle , Aumento de Peso/efeitos dos fármacos
8.
Orthop Traumatol Surg Res ; 100(2): 243-5, 2014 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-24508268

RESUMO

Schwannomas are benign tumors arising from the peripheral nerves with a Schwann cell sheath. Schwannomas can be found in almost every region, but are usually associated with cranial, spinal, sympathetic and peripheral nerves. Schwannoma in lower extremity is relatively common and most are associated with sciatic nerve, peroneal nerve and tibial nerve. However, schwannoma arising in the tendon or paratenon is extremely rare. We report a rare case of a 25-year-old male patient with a schwannoma originating from the paratenon of semitendinosus muscle without evidences of any neurologic symptoms. The clinical history, plain radiographs, magnetic resonance imaging, and pathologic findings of the reported patient have been reviewed. The tumor was fully excised by dissecting a tendon sheath of semitendinosus muscle.


Assuntos
Neoplasias Musculares/cirurgia , Músculo Esquelético/cirurgia , Neurilemoma/cirurgia , Tendões/cirurgia , Adulto , Humanos , Imageamento por Ressonância Magnética , Masculino , Neoplasias Musculares/diagnóstico , Neurilemoma/diagnóstico , Tendões/patologia
9.
BJOG ; 121(9): 1097-106; discussion 1106, 2014 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-24397772

RESUMO

OBJECTIVE: To investigate the prognostic value of metabolic tumour volume (MTV) and total lesion glycolysis (TLG), measured by preoperative positron emission tomography and computerised tomography (PET/CT), in women with endometrial cancer. DESIGN: Retrospective cohort study. SETTING: A tertiary referral centre. POPULATION: Women with endometrial cancer who underwent preoperative (18)F-FDG PET/CT in the period 2004-2009. METHODS: Clinicopathological data for 84 women with endometrial cancer were reviewed from medical records. Cox proportional hazards modelling identified recurrence predictors. The receiver operating characteristic (ROC) curve was used to determine the cut-off value for predicting recurrence. MAIN OUTCOME MEASURE: Disease-free survival (DFS). RESULTS: The number of patients with International Federation of Gynecology and Obstetrics (FIGO) stages were: I (58); II (11); III (13); and IV (2). The median DFS was 48 (1-85) months. By univariate analysis, DFS was significantly associated with FIGO stage, histology, peritoneal cytology, myometrial invasion, nodal metastasis, serum CA-125, MTV, and TLG. Using multivariate analysis, the MTV (P = 0.010; hazard ratio, HR = 1.010; 95% confidence interval, 95% CI = 1.002-1.018) and TLG (P = 0.024; HR = 1.001; 95% CI = 1.000-1.002) were associated with DFS. The area under the ROC curve was 0.679 (95% CI = 0.505-0.836) after discriminating for recurrence using an MTV cut-off value of 17.15 ml. Regarding TLG, the cut-off value was 56.43 g and the area under the ROC plot was 0.661 (95% CI = 0.501-0.827). Kaplan-Meier survival graphs demonstrated a significant difference in DFS between groups categorised using the cut-off values for MTV and TLG (P < 0.022 for MTV and P < 0.047 for TLG, by log-rank test). CONCLUSIONS: Preoperative MTV and TLG could be independent prognostic factors predicting the recurrence of endometrial cancer.


Assuntos
Neoplasias do Endométrio/diagnóstico por imagem , Recidiva Local de Neoplasia/diagnóstico , Adulto , Idoso , Intervalo Livre de Doença , Neoplasias do Endométrio/metabolismo , Neoplasias do Endométrio/patologia , Feminino , Fluordesoxiglucose F18 , Glicólise , Humanos , Pessoa de Meia-Idade , Tomografia por Emissão de Pósitrons/métodos , Cuidados Pré-Operatórios/métodos , Prognóstico , Compostos Radiofarmacêuticos , Estudos Retrospectivos , Tomografia Computadorizada por Raios X/métodos , Adulto Jovem
10.
Int J Obes (Lond) ; 38(2): 321-4, 2014 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-23732658

RESUMO

Human adenovirus Ad36 increases adiposity in several animal models, including rodents and non-human primates. Importantly, Ad36 is associated with human obesity, which has prompted research to understand its epidemiology and to develop a vaccine to prevent a subgroup of obesity. For this purpose, understanding the genomic stability of Ad36 in vivo and in vitro infections is critical. Here, we examined whether in vitro cell passaging over a 14-year period introduced any genetic variation in Ad36. We sequenced the whole genome of Ad36-which was plaque purified in 1998 from the original strain obtained from American Type Culture Collection, and passaged approximately 12 times over the past 14 years (Ad36-2012). This DNA sequence was compared with a previously published sequence of Ad36 likely obtained from the same source (Ad36-1988). Compared with Ad36-1988, only two nucleotides were altered in Ad36-2012: a T insertion at nucleotide 1862, which may induce early termination of the E1B viral protein, and a T➝C transition at nucleotide 26 136. Virus with the T insertion (designated Ad36-2012-T6) was mixed with wild-type virus lacking the T insertion (designated Ad36-2012-T5) in the viral stock. The transition at nucleotide 26 136 does not change the encoded amino acid (aspartic acid) in the pVIII viral protein. The rate of genetic variation in Ad36 is ∼2.37 × 10(-6) mutations/nucleotide/passage. Of particular importance, there were no mutations in the E4orf1 gene, the critical gene for producing obesity. This very-low-variation rate should reduce concerns about genetic variability when developing Ad36 vaccines or developing assays for detecting Ad36 infection in populations.


Assuntos
Adenovírus Humanos/genética , Adiposidade/fisiologia , Anticorpos Antivirais/metabolismo , Instabilidade Genômica/genética , RNA Viral/metabolismo , Adenovírus Humanos/fisiologia , Adipogenia , Animais , Variação Genética , Instabilidade Genômica/fisiologia , Humanos , Camundongos , Modelos Animais , Primatas
11.
Br J Cancer ; 110(1): 34-41, 2014 Jan 07.
Artigo em Inglês | MEDLINE | ID: mdl-24231954

RESUMO

BACKGROUND: The objective of this study is to construct a preoperative nomogram predicting lymph node metastasis (LNM) in early-cervical cancer patients. METHODS: Between 2009 and 2012, 493 early-cervical cancer patients received hysterectomy and pelvic/para-aortic lymphadenectomy. Patients who were diagnosed during 2009-2010 were assigned to a model-development cohort (n=304) and the others were assigned to a validation cohort (n=189). A multivariate logistic model was created from preoperative clinicopathologic data, from which a nomogram was developed and validated. A predicted probability of LNM<5% was defined as low risk. RESULTS: Age, tumour size assessed by magnetic resonance imaging, and LNM assessed by positron emission tomography/computed tomography were independent predictors of nodal metastasis. The nomogram incorporating these three predictors demonstrated good discrimination and calibration (concordance index=0.878; 95% confidence interval (CI), 0.833-0.917). In the validation cohort, the discrimination accuracy was 0.825 (95% CI, 0.736-0.895). In the model-development cohort, 34% of them were classified as low risk and negative predictive value (NPV) was 99.0%. In the validation cohort, 38% were identified as low risk and NPV was 95.8%. Integrating the model-development and validation cohorts, negative likelihood ratio was 0.094 (95% CI, 0.036-0.248). CONCLUSION: A robust nomogram predicting LNM in early cervical cancer was developed. This model may improve clinical trial design and help physicians to decide whether lymphadenectomy should be performed.


Assuntos
Linfonodos/patologia , Nomogramas , Neoplasias do Colo do Útero/patologia , Adulto , Idoso , Estudos de Coortes , Feminino , Humanos , Modelos Logísticos , Linfonodos/cirurgia , Metástase Linfática , Imageamento por Ressonância Magnética , Pessoa de Meia-Idade , Imagem Multimodal , Análise Multivariada , Estadiamento de Neoplasias , Tomografia por Emissão de Pósitrons , Valor Preditivo dos Testes , Neoplasias do Colo do Útero/cirurgia , Adulto Jovem
12.
Br J Cancer ; 110(2): 278-85, 2014 Jan 21.
Artigo em Inglês | MEDLINE | ID: mdl-24357798

RESUMO

BACKGROUND: In this study, we sought to identify a criterion for the intermediate-risk grouping of patients with cervical cancer who exhibit any intermediate-risk factor after radical hysterectomy. METHODS: In total, 2158 patients with pathologically proven stage IB-IIA cervical cancer with any intermediate-risk factor after radical hysterectomy were randomly assigned to two groups, a development group and a validation group, at a ratio of 3 : 1 (1620 patients:538 patients). To predict recurrence, multivariate models were developed using the development group. The ability of the models to discriminate between groups was validated using the log-rank test and receiver operating characteristic (ROC) analysis. RESULTS: Four factors (histology, tumour size, deep stromal invasion (DSI), and lymphovascular space involvement (LVSI)) were significantly associated with disease recurrence and included in the models. Among the nine possible combinations of the four variables, models consisting of any two of the four intermediate-risk factors (tumour size ≥3 cm, DSI of the outer third of the cervix, LVSI, and adenocarcinoma or adenosquamous carcinoma histology) demonstrated the best performance for predicting recurrence. CONCLUSION: This study identified a 'four-factor model' in which the presence of any two factors may be useful for predicting recurrence in patients with cervical cancer treated with radical hysterectomy.


Assuntos
Neoplasias do Colo do Útero/patologia , Neoplasias do Colo do Útero/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Histerectomia/efeitos adversos , Histerectomia/métodos , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/patologia , República da Coreia , Risco , Adulto Jovem
13.
Obes Rev ; 14(9): 721-35, 2013 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-23663746

RESUMO

Obesity is associated with numerous metabolic comorbidities. Weight loss is an effective measure for alleviating many of these metabolic abnormalities. However, considering the limited success of most medical weight-management approaches in producing a sustained weight loss, approaches that improve obesity-related metabolic abnormalities independent of weight loss would be extremely attractive and of practical benefit. Metabolically healthy obesity supports the notion that a better metabolic profile is possible despite obesity. Moreover, adequate expansion of adipose tissue appears to confer protection from obesity-induced metabolic comorbidities. To this end, the 10th Stock conference examined new approaches to improve metabolic comorbidities independent of weight loss. In particular, human adenovirus 36 (Ad36) and specific gut microbes were examined for their potential to influence lipid and glucose homeostasis in animals and humans. While these microbes possess some undesirable properties, research has identified attributes of adenovirus Ad36 and gut microbes that may be selectively harnessed to improve metabolic profile without the obligatory weight loss. Furthermore, identifying the host signalling pathways that these microbes recruit to improve the metabolic profile may offer new templates and targets, which may facilitate the development of novel treatment strategies for obesity-related metabolic conditions.


Assuntos
Adipogenia , Tecido Adiposo/microbiologia , Trato Gastrointestinal/microbiologia , Glucose/metabolismo , Lipídeos/sangue , Obesidade/terapia , Tecido Adiposo/metabolismo , Comorbidade , Trato Gastrointestinal/metabolismo , Homeostase , Humanos , Doenças Metabólicas/metabolismo , Doenças Metabólicas/microbiologia , Microbiota , Obesidade/microbiologia , Redução de Peso
14.
Eur J Surg Oncol ; 39(2): 115-24, 2013 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-23084091

RESUMO

BACKGROUND: The efficacy of neoadjuvant chemotherapy before surgery (NCS) has not been well-established in FIGO stage IB1 to IIA cervical cancer when compared with primary surgical treatment (PST). Thus, we performed a meta-analysis to determine the efficacy of NCS in patients with FIGO stage IB1 to IIA cervical cancer when compared with PST. METHODS: We searched Pubmed, Embase and the Cochrane Library between January 1987 and September 2010. Since there was a relative lack of relevant randomized controlled trials (RCTs), we included 5 RCTs and 4 observational studies involving 1784 patients among 523 potentially relevant studies. RESULTS: NCS was related with lower rates of large tumor size (≥4 cm) (ORs, 0.22 and 0.10; 95% CI, 0.13-0.39 and 0.02-0.37) and lymph node metastasis (ORs, 0.61 and 0.38; 95% CI, 0.37-0.99 and 0.20-0.73) than PST in all studies and RCTs. Furthermore, NCS reduced the need of adjuvant radiotherapy (RT) in all studies (OR, 0.57; 95% CI, 0.33-0.98), and distant metastasis in all studies and RCTs (ORs, 0.61 and 0.61; 95% CI, 0.42-0.89 and 0.38-0.97). However, overall and loco-regional recurrences and progression-free survival were not different between the 2 treatments. On the other hand, NCS was associated with poorer overall survival in observational studies when compared with PST (HR, 1.68; 95% CI, 1.12-2.53). CONCLUSIONS: Although NCS reduced the need of adjuvant RT by decreasing tumor size and lymph node metastasis, and distant metastasis, it failed to improve survival when compared with PST in patients with FIGO stage IB1 to IIA cervical cancer.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Terapia Neoadjuvante/métodos , Neoplasias do Colo do Útero/tratamento farmacológico , Neoplasias do Colo do Útero/patologia , Quimioterapia Adjuvante , Intervalo Livre de Doença , Feminino , Humanos , Histerectomia , Cooperação Internacional , Metástase Linfática , Recidiva Local de Neoplasia/prevenção & controle , Estadiamento de Neoplasias , Observação , Razão de Chances , Radioterapia Adjuvante , Ensaios Clínicos Controlados Aleatórios como Assunto , Projetos de Pesquisa , Fatores de Risco , Resultado do Tratamento , Neoplasias do Colo do Útero/radioterapia , Neoplasias do Colo do Útero/cirurgia
15.
Int J Obes (Lond) ; 36(2): 195-200, 2012 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-21540833

RESUMO

OBJECTIVE: The objective of this study was to investigate the molecular mechanisms underlying adenovirus-36 (Ad-36)-induced obesity by the identification of novel genes and cellular pathways. DESIGN: Viral growth, intracellular lipid accumulation and gene expression profiles were determined in human mesenchymal stem cells (hMSCs) infected with Ad-36 or Ad-2. A microarray assay and gene set enrichment analysis (GSEA) were performed to assess alterations in global gene expression profiles. RESULTS: Ad-36, but not Ad-2, induced lipid accumulation and upregulated adipogenesis-related genes. There was no difference in viral growth between Ad-36 infection and Ad-2 infection in hMSCs. GSEA revealed that Ad-36 infection was more frequently associated with activation of novel pathways, including the PPAR-gamma signaling pathway, and inflammation compared with Ad-2 infection, raising the possibility that these pathways may be key regulators of Ad-36-induced adipogenesis. CONCLUSION: This study may help foster a better understanding of the roles of several cellular factors in Ad-36-induced obesity.


Assuntos
Proteínas E1B de Adenovirus/genética , Adipogenia/genética , Metabolismo dos Lipídeos/genética , Células-Tronco Mesenquimais/virologia , Obesidade/genética , Proteínas Oncogênicas Virais/metabolismo , Fragmentos de Peptídeos/genética , Proteínas E1B de Adenovirus/metabolismo , Adenovírus Humanos/genética , Diferenciação Celular , Humanos , Células-Tronco Mesenquimais/metabolismo , Proteínas Oncogênicas Virais/genética , PPAR gama/metabolismo , Fragmentos de Peptídeos/metabolismo , Transdução de Sinais/genética
16.
Int J Obes (Lond) ; 36(2): 281-5, 2012 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-21587203

RESUMO

BACKGROUND: Although human adenovirus-36 (Ad-36) has been reported to be associated with obesity in US adults and children, Korean children and the Italian population, the association has not been found in Dutch or Belgian populations or in US military subjects. Therefore, we examined whether Ad-36 infection is associated with obesity in Korean adults. METHODS: A total of 540 age- and sex-matched individuals, who were normal weight, overweight or obese, were selected from participants in routine health examinations at the Ewha Womans University Medical Center. Overweight participants were defined as those with a body mass index (BMI) of 23 ≤ BMI<25 kg m(-2) and obese subjects were those with BMI ≥ 25 kg m(-2), according to the International Obesity Task Force definition. Ad-36 antibody was measured using a serum neutralization assay. RESULTS: Although more overweight participants than normal or obese subjects tested positive for the Ad-36 antibody (40%, 32.8% and 30%, respectively), the differences were not significant. The participants who tested positive for Ad-36 antibody had lower levels of triglycerides (TG) in each of the three groups, higher total cholesterol (TC) in the obese group and higher high-density lipoprotein-cholesterol (HDL-C) in both the normal and obese groups. The odds ratio (OR) for Ad-36 antibody positivity was greater in overweight than in normal subjects (OR=2.03; 95% confidence interval (CI), 1.16-3.55) after adjusting for age, sex and waist circumference. However, this OR was non-significant in the obese group (OR=1.56; 95% CI, 0.67-3.67). CONCLUSION: Ad-36 seems to be strongly associated with overweight, but not obese, Korean adults.


Assuntos
Infecções por Adenovirus Humanos/complicações , Infecções por Adenovirus Humanos/epidemiologia , Adenovírus Humanos , Povo Asiático/estatística & dados numéricos , Sobrepeso/virologia , Infecções por Adenovirus Humanos/sangue , Infecções por Adenovirus Humanos/imunologia , Adenovírus Humanos/imunologia , Adulto , Biomarcadores/sangue , Índice de Massa Corporal , Estudos de Casos e Controles , HDL-Colesterol/sangue , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Obesidade/virologia , Razão de Chances , Sobrepeso/sangue , Sobrepeso/epidemiologia , Sobrepeso/imunologia , Prevalência , República da Coreia/epidemiologia , Fatores de Risco , Triglicerídeos/sangue
17.
Ann Oncol ; 23(4): 903-11, 2012 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-21841155

RESUMO

BACKGROUND: To compare the long-term survival outcomes between laparoscopic radical hysterectomy (LRH) and open radical hysterectomy (ORH). METHOD: We matched patients with stage IA2 to IIA cervical cancer with known risk factors for recurrence who underwent ORH and LRH. RESULTS: Compared with ORH (n = 263), LRH (n = 263) did not have higher risks of recurrence [hazard ratio (HR) = 1.28; 95% confidence interval (CI) 0.62-2.64] or death (HR = 1.46; 95% CI 0.62-3.43). Even in patients with tumors >2 cm in diameter, the risks of recurrence (HR = 0.82; 95% CI 0.31-2.16) or death (HR = 1.01; 95% CI 0.35-2.95) were not higher for LRH than for ORH. The LRH and ORH group had 5-year recurrence-free survival rates of 92.8% and 94.4%, respectively (P = 0.499). LRH resulted in significantly lower estimated blood loss (379.6 versus 541.1 ml, P < 0.001) and shorter postoperative hospital stay (12.5 versus 20.3 days, P < 0.001). Intraoperative complication rates were similar in the two groups (6.8% versus 5.7%, P = 0.711), but postoperative complication rate was lower in the LRH than in the ORH group (9.2% versus 21%, P < 0.001). CONCLUSION: LRH is an oncologically safe alternative to ORH and was associated with fewer postoperative complication and earlier recovery.


Assuntos
Adenocarcinoma/cirurgia , Carcinoma de Células Escamosas/cirurgia , Histerectomia/métodos , Laparoscopia , Neoplasias do Colo do Útero/cirurgia , Adenocarcinoma/mortalidade , Adenocarcinoma/patologia , Adulto , Idoso , Carcinoma de Células Escamosas/mortalidade , Carcinoma de Células Escamosas/patologia , Intervalo Livre de Doença , Feminino , Humanos , Estimativa de Kaplan-Meier , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Neoplasias do Colo do Útero/mortalidade , Neoplasias do Colo do Útero/patologia
18.
Ann Oncol ; 22(1): 59-67, 2011 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-20595451

RESUMO

BACKGROUND: this study investigated the outcomes after radical hysterectomy according to tumor size divided by 2-cm interval in patients with International Federation of Obstetrics and Gynecology stage IA2-IIA cervical cancer. PATIENTS AND METHODS: a total of 1415 patients were eligible for participation in the study and were retrospectively analyzed. Patients were divided into four groups according to tumor size (i.e. ≤ 2, 2-4, 4-6 and >6 cm). The relationships between tumor size and other clinicopathologic risk factors, the probability of adjuvant therapy, survival parameters, recurrence-free survival (RFS) and overall survival (OS) were analyzed. RESULTS: the incidence of intermediate- and high-risk factors gradually increased with increasing tumor size. Adjuvant therapy was required in 13.6%, 34.0%, 56.7% and 92.9% of patients with tumor sizes of ≤ 2, 2-4, 4-6 and >6 cm, respectively (P < 0.001). The risks of recurrence and death gradually increased with increasing tumor size, after adjusting for other significant prognostic factors in multivariate analysis (P < 0.001 and < 0.001, respectively). Even in patients with no intermediate- or high-risk factors, tumor size was a significant predictor of RFS and OS (P < 0.001 and < 0.001, respectively). Immediate surgical parameters did not significantly differ according to tumor size. CONCLUSIONS: tumor size divided by a 2-cm interval was an independent prognostic factor and correlated well with other risk factors and with the need for adjuvant therapy.


Assuntos
Neoplasias do Colo do Útero/patologia , Neoplasias do Colo do Útero/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Quimioterapia Adjuvante , Intervalo Livre de Doença , Feminino , Humanos , Histerectomia/métodos , Excisão de Linfonodo , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Radioterapia Adjuvante , Estudos Retrospectivos , Resultado do Tratamento , Adulto Jovem
19.
Br J Cancer ; 102(12): 1692-8, 2010 Jun 08.
Artigo em Inglês | MEDLINE | ID: mdl-20531414

RESUMO

BACKGROUND: To determine the prognostic factors and treatment outcomes of patients with early-stage adenocarcinoma (AdCa) of uterine cervix who underwent radical hysterectomy (RH). METHODS: Patients with early-stage squamous cell carcinoma (SCCa) of the uterine cervix who underwent RH were compared with patients with AdCa by multivariate analysis. RESULTS: A total of 1218 patients were eligible, of which 996 (81.8%) had SCCa and 222 (18.2%) had AdCa. In multivariate analysis, parametrial involvement and lymph node metastasis were significant factors for both recurrence-free survival(RFS) and overall survival (OS) of patients with AdCa, whereas age, tumour size, parametrial involvement and lymph node metastasis were significant factors for both RFS and OS of patients with SCCa. After adjusting for significant prognostic factors, patients with AdCa had significantly poorer RFS (odds ratio (OR)=2.07, 95% confidence interval (CI)=1.37-3.12, P=0.001) and OS (OR=2.56, 95% CI=1.65-3.96, P<0.001) than patients with SCCa. Recurrence outside the pelvis was more frequent in AdCa than in those with SCCa (75 vs 57.8%, P=0.084). CONCLUSION(S): Although RH is still acceptable for treatment of patients with AdCa, a more effective systemic adjuvant therapy is required.


Assuntos
Adenocarcinoma/cirurgia , Histerectomia/métodos , Neoplasias do Colo do Útero/cirurgia , Adenocarcinoma/mortalidade , Adenocarcinoma/patologia , Adulto , Idoso , Carcinoma de Células Escamosas/mortalidade , Carcinoma de Células Escamosas/patologia , Carcinoma de Células Escamosas/cirurgia , Intervalo Livre de Doença , Feminino , Humanos , Metástase Linfática , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/patologia , Prognóstico , Recidiva , Resultado do Tratamento , Neoplasias do Colo do Útero/mortalidade , Neoplasias do Colo do Útero/patologia
20.
Int J Obes (Lond) ; 34(1): 89-93, 2010 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-19823186

RESUMO

BACKGROUND: Although the human adenovirus-36 (Ad-36) has been associated with obesity and related lipid disorders in the United States, this association has yet to be identified in other countries. Therefore, we tried to determine whether Ad-36 is associated with obesity or lipid disorders in Korean schoolchildren. METHOD: A total of 318 Korean schoolchildren aged 6-15 years, who participated in the Ewha Womans University Obesity Research Study, were selected for a community-based cohort study. Non-obese and obese were defined as body mass index (BMI) <85th and > or = 95th percentiles of the Korean reference BMI-for-age curves, respectively, according to International Obesity Task Force definitions. The cutoff points for lipid disorders were modified from the age-modified standards of the National Cholesterol Education Program (NCEP)-Adult Treatment Panel (ATP) III metabolic syndrome criteria. The Ad-36 antibody was measured using a serum neutralization assay. RESULTS: More obese participants than non-obese participants tested positive for the Ad-36 antibody (28.57 vs 13.56%, respectively; P = 0.0174). Within the obese group, the participants who tested positive for the Ad-36 antibody had higher levels of triglycerides (TG) and total cholesterol than those who tested negative for the Ad-36 antibody (P<0.001). However, these associations were not present in the non-obese group. The unadjusted odds ratio (OR) for Ad-36 antibody positivity was greater in obese participants than non-obese participants (OR = 2.550, 95% confidence interval (CI): 1.154-5.633). However, this OR seemed to be nonsignificant when age, sex and lipid variables were included in the analysis (OR = 1.752, 95% CI: 0.763-4.020). The unadjusted OR for the elevated TG was significantly higher in participants who were Ad-36 antibody-positive than those who were Ad-36 antibody-negative (OR = 2.511, 95% CI: 1.448-4.353). This trend remained constant even after adjustment for age, sex and obesity (OR = 2.328, 95% CI: 1.296-4.181). CONCLUSION: Ad-36 seems to be strongly associated with lipid disorders in Korean schoolchildren regardless of obesity.


Assuntos
Infecções por Adenovirus Humanos/sangue , Transtornos do Metabolismo dos Lipídeos/sangue , Lipídeos/sangue , Obesidade/sangue , Infecções por Adenovirus Humanos/epidemiologia , Infecções por Adenovirus Humanos/virologia , Adenovírus Humanos/imunologia , Adolescente , Anticorpos Antivirais/sangue , Povo Asiático , Índice de Massa Corporal , Criança , Feminino , Humanos , Coreia (Geográfico)/epidemiologia , Transtornos do Metabolismo dos Lipídeos/epidemiologia , Transtornos do Metabolismo dos Lipídeos/virologia , Masculino , Obesidade/epidemiologia , Obesidade/virologia , Razão de Chances , Fatores de Risco , Estudantes
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