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1.
Plant Physiol Biochem ; 207: 108305, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38241829

RESUMO

Ferric reduction oxidase (FRO) plays important roles in biotic and abiotic stress. However, the function of ferric reduction oxidase from Lilium pumilum in response to NaHCO3 is unknown. Here we report the functional characterization of ferric reduction oxidase 7 in Lilium pumilum (LpFRO7) in stresses. Under NaHCO3 stress, the LpFRO7 overexpression lines exhibited lower accumulation of reactive oxygen species (ROS), higher activities in antioxidant enzyme (CAT, SOD and POD) and ferrite reductase, resulting in improved tolerance compared to the wild type (WT). In order to determine the functional network of LpFRO7, it was confirmed by EMSA assays, Yeast one-hybrid assays and Dual luciferase reporter assays that LpbHLH115 transcription factor can bind to the promoter of LpFRO7. Yeast two-hybrid assays, BiFC, and LCI assays were performed to prove that LpFRO7 can interact with LpTrx. Combining these findings, we concluded that LpFRO7 affects plant saline-alkaline tolerance by regulating ROS homeostasis.


Assuntos
Lilium , Espécies Reativas de Oxigênio/metabolismo , Lilium/genética , Oxirredutases/metabolismo , Proteínas de Plantas/genética , Proteínas de Plantas/metabolismo , Estresse Fisiológico , Plantas Geneticamente Modificadas/metabolismo , Homeostase , Regulação da Expressão Gênica de Plantas
2.
Int J Mol Sci ; 24(4)2023 Feb 07.
Artigo em Inglês | MEDLINE | ID: mdl-36834722

RESUMO

(1) Background: The growth of plants is impacted by salinity and alkali, Lilium pumilum (L. pumilum) is an ornamental plant with strong resistance to salinity and alkali, while the LpPsbP gene is helpful to fully understand the Saline-Alkali tolerance of L. pumilum. (2) Methods: Gene cloning, bioinformatics analysis, expression of fusion protein, determination of physiological indices of plant after Saline-Alkali stress, yeast two-hybrid screening, luciferase complementation assay, chromosome walking to obtain the promoter sequence, and then analyzed by PlantCARE. (3) Results: The LpPsbP gene was cloned and the fusion protein was purified. The transgenic plants had higher Saline-Alkali resistance than the wild type. A total of eighteen proteins interacting with LpPsbP were screened, and nine sites in the promoter sequence were analyzed. (4) Conclusion: Under Saline-Alkali or oxidative stress, L. pumilum will promote the expression of LpPsbP, which will then directly scavenge reactive oxygen species (ROS) in order to protect its photosystem II, reduce its damage, and thus improve the Saline-Alkali resistance of the plant. Moreover, according to some of the literature and the following experiments, two additional speculations are developed on the mechanisms of how two newly found objects, namely jasmonic acid (JA) and FoxO protein, could be involved in ROS scavenging processes were made.


Assuntos
Lilium , Espécies Reativas de Oxigênio/metabolismo , Lilium/genética , Álcalis/metabolismo , Estresse Oxidativo , Plantas Geneticamente Modificadas/genética , Proteínas de Plantas/genética , Estresse Fisiológico/genética , Regulação da Expressão Gênica de Plantas
3.
Injury ; 54(2): 362-369, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36509562

RESUMO

BACKGROUND: We aimed to evaluate the biomechanical stiffness and strength of different internal fixation configurations and find suitable treatment strategies for low transcondylar fractures of the distal humerus. METHODS AND MATERIALS: Thirty 4th generation composite humeri were used to create low transcondylar fracture models that were fixed by orthogonal and parallel double plates as well as posterolateral plate and medial screw (PPMS) configurations (n=10 in each group) using an anatomical locking compression plate-screw system and fully threaded medial cortical screws. Posterior bending (maximum 50 N), axial loading (maximum 200 N) and internal rotation (maximum 10 N·m) were tested, in that order, for each specimen. Stiffness under different biomechanical settings among different configurations were compared. Another 18 sets of fracture models were created using these three configurations (n=6 in each group) and the load to failure under axial loading among different configurations was compared. RESULTS: Under posterior bending, the stiffness of parallel group was higher than orthogonal group (P<0.001), and orthogonal group was higher than PPMS group (P<0.001). Under axial loading, the stiffness of parallel group was higher than orthogonal group (P=0.001) and PPMS group (P<0.001); however, the difference between orthogonal and PPMS group was not statistically significant (P>0.05). Under internal rotation, the stiffness of parallel group was higher than orthogonal group (P=0.044), and orthogonal group was higher than PPMS group (P=0.029). In failure test under axial loading, the load to failure in the orthogonal group was lower than parallel group (P=0.009) and PPMS group (P=0.021), but the difference between parallel group and PPMS group was not statistically significant (P>0.05). All specimens in orthogonal group demonstrated "distal medial failure"; most specimens had "distal medial and trochlear failure" in the parallel group; most specimens exhibited "contact failure" in the PPMS group. CONCLUSION: For treating low transcondylar fractures, the overall stiffness and strength of the parallel configuration were superior to those of the orthogonal and PPMS configurations. Nevertheless, the PPMS configuration can provide adequate stability and stiffness comparable to double-plate configurations under axial loading. Therefore, the PPMS construct may have certain clinical value.


Assuntos
Fraturas do Úmero , Humanos , Fraturas do Úmero/cirurgia , Fenômenos Biomecânicos , Úmero/cirurgia , Fixação Interna de Fraturas/métodos , Placas Ósseas
4.
BMJ Open ; 11(12): e045768, 2021 12 03.
Artigo em Inglês | MEDLINE | ID: mdl-34862274

RESUMO

OBJECTIVE: We aimed to determine the association between meteorological factors and sudden sensorineural hearing loss (SSNHL) audiogram configurations. DESIGN: Retrospective review of medical records from 1 October 2007 to 31 December 2018. SETTING: A tertiary hospital. PARTICIPANTS: 510 patients with SSNHL who had data on the exact date of SSNHL onset and underwent audiological evaluation within 14 days were included. PRIMARY AND SECONDARY OUTCOME MEASURES: Daily values of meteorological factors, including maximum and minimum temperature, mean temperature and its day-to-day change, diurnal temperature range, atmospheric pressure, mean and maximum wind speed and relative humidity, and seasonal distributions. RESULTS: Among the 510 patients (259 women (50.8%); mean (SD) age, 46.4 (15.5) years), 108 (21.2%) displayed ascending patterns, 143 (28.0%) displayed descending patterns, 129 (25.3%) displayed flat patterns and 130 (25.5%) displayed profound patterns of audiograms. The diurnal temperature range on the day of SSNHL onset in patients with profound patterns was significantly higher than that in patient with ascending (mean difference (MD), 2.2°C; 95% CI, 0.7°C to 3.7°C; p=0.001) and descending (MD, 1.5°C; 95% CI, 0.1°C to 2.9°C; p=0.031) patterns. The relative humidity was the highest on the day of SSNHL onset in patients with ascending patterns and showed a significant difference compared with that in patients with profound patterns (MD, 8.0%; 95% CI, 0.7% to 15.3%; p=0.026). Seasonal distribution did not differ among patients with different audiogram configurations. CONCLUSIONS: Profound audiogram patterns correlated with high diurnal temperature range, while ascending audiogram patterns correlated with high relative humidity in patients with SSNHL. No correlation was observed between seasons and audiogram configurations.


Assuntos
Perda Auditiva Neurossensorial , Perda Auditiva Súbita , Estudos Transversais , Feminino , Perda Auditiva Neurossensorial/complicações , Perda Auditiva Neurossensorial/epidemiologia , Perda Auditiva Súbita/complicações , Perda Auditiva Súbita/epidemiologia , Testes Auditivos , Humanos , Conceitos Meteorológicos , Pessoa de Meia-Idade , Estudos Retrospectivos
5.
BMC Musculoskelet Disord ; 22(1): 941, 2021 Nov 10.
Artigo em Inglês | MEDLINE | ID: mdl-34758796

RESUMO

BACKGROUND: To evaluate and compare the functional outcomes of combined medial-lateral approach open arthrolysis with and without hinged external fixation. METHODS: We retrospectively collected and analyzed the clinical data of patients with severe elbow stiffness who were treated in our institution from January 2018 to January 2019. All of them were treated with combined medial-lateral approach arthrolysis. There were 20 patients who had the hinged external fixation placed and 29 patients without the placement of the external fixation. Their baseline characteristics and functional outcomes were evaluated and compared. RESULTS: The average follow-up time was 28.4 ± 3.7 months. There were no significant differences in the ROM of the elbow, MEPS, VAS, DASH, or complications between the two groups. The operation time and treatment cost of the patients without external fixation were significantly lower than patients with external fixation. CONCLUSION: Combined medial-lateral approach open elbow arthrolysis without external fixation is a safe and effective way to treat elbow stiffness. LEVEL OF EVIDENCE: Therapeutic Level III; Retrospective Cohort Comparison; Treatment Study.


Assuntos
Articulação do Cotovelo , Cotovelo , Articulação do Cotovelo/diagnóstico por imagem , Articulação do Cotovelo/cirurgia , Fixadores Externos , Fixação de Fratura , Humanos , Amplitude de Movimento Articular , Estudos Retrospectivos , Resultado do Tratamento
6.
BMC Musculoskelet Disord ; 22(1): 939, 2021 Nov 10.
Artigo em Inglês | MEDLINE | ID: mdl-34758812

RESUMO

BACKGROUND: To evaluate the difference of functional outcomes between OTA/AO type C, Gustilo type I/II open fractures and closed fractures of the distal humerus after open reduction and internal fixation. METHODS: We retrospectively analyzed the clinical data of patients with OTA/AO-C distal humerus fractures who were treated in our department from January 2014 to December 2016. The patients were divided into an open fracture group and a closed fracture group. Their baseline characteristics and functional outcomes were analyzed and compared. RESULTS: A total of 64 patients treated by operative fixation were identified (25 open and 39 closed injuries), and the average follow-up time was 35.1 ± 13.6 months. There were no significant differences in the range of motion (ROM) of the elbow, Mayo Elbow Performance Score (MEPS), Disabilities of the Arm, Shoulder and Hand (DASH) score, complications, hospitalization time, operation time, intraoperative blood loss, or medical costs between the two groups (P > 0.05). CONCLUSION: OTA/AO type C, Gustilo I/II distal humeral open fractures can yield satisfactory clinical results similar to those of closed distal humeral fractures after open reduction and internal fixation. LEVEL OF EVIDENCE: Therapeutic Level III; Retrospective Cohort Comparison; Treatment Study.


Assuntos
Articulação do Cotovelo , Fraturas Fechadas , Fraturas Expostas , Fraturas do Úmero , Articulação do Cotovelo/diagnóstico por imagem , Articulação do Cotovelo/cirurgia , Fixação Interna de Fraturas/efeitos adversos , Fraturas Expostas/diagnóstico por imagem , Fraturas Expostas/cirurgia , Humanos , Fraturas do Úmero/diagnóstico por imagem , Fraturas do Úmero/cirurgia , Úmero , Amplitude de Movimento Articular , Estudos Retrospectivos , Resultado do Tratamento
7.
J Shoulder Elbow Surg ; 29(9): 1876-1883, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-32446760

RESUMO

BACKGROUND: The purpose of this study was to propose the modified trochleocapitellar index (mTCI), assess its reliability, and evaluate its correlation with post-traumatic elbow stiffness in type C2-3 distal humeral fractures among adults. METHODS: From January 2013 to June 2017, a total of 141 patients with type C2-3 distal humeral fractures were included. The mTCI was calculated as the ratio between the modified trochlear and capitellar angles relative to the humeral axis (mTCI-HA), lateral humeral line (mTCI-LHL), and medial humeral line (mTCI-MHL) from anteroposterior radiographs taken immediately after the operation. The patients were divided into group A (with elbow stiffness) and group B (without elbow stiffness) based on follow-up results. To determine risk factors for elbow stiffness, univariate and logistic regression analyses were performed on each radiographic parameter separately, together with other clinical variables. Interrater reliability was assessed for all measurements. RESULTS: Specific optimal ranges of value were identified for mTCI-HA (0.750-0.875), mTCI-LHL (0.640-1.060), and mTCI-MHL (0.740-0.900), beyond which the likelihood of elbow stiffness significantly increased (P < .001). By multivariate analysis, mTCI-HA (odds ratio [OR] 26.22, 95% confidence interval [CI] 3.39-203.07, P = .002), mTCI-LHL (OR 5.37, 95% CI 2.17-13.28, P < .001), and mTCI-MHL (OR 5.95, 95% CI 1.91-18.56, P = .002) values beyond the optimal ranges were identified as the independent risk factors for elbow stiffness. The interrater reliability of mTCI-HA, mTCI-LHL, and mTCI-MHL was 0.986, 0.983, and 0.987, respectively. CONCLUSION: The mTCI measurement method is reliable. Either too small or too large mTCI values were associated with post-traumatic elbow stiffness among adult patients with type C2-3 distal humeral fractures. The mTCI-HA showed a better predictive value than mTCI-LHL and mTCI-MHL.


Assuntos
Articulação do Cotovelo/diagnóstico por imagem , Articulação do Cotovelo/fisiopatologia , Fraturas do Úmero/fisiopatologia , Fraturas do Úmero/cirurgia , Amplitude de Movimento Articular/fisiologia , Adolescente , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Radiografia , Reprodutibilidade dos Testes , Estudos Retrospectivos , Fatores de Risco , Adulto Jovem
8.
J BUON ; 24(4): 1402-1407, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31646783

RESUMO

PURPOSE: To compare the efficacy of transcatheter arterial chemoembolization (TACE) combined with radiofrequency ablation (RFA) in primary hepatocellular carcinoma and recurrence of hepatocellular carcinoma after hepatectomy, and analysis the prognostic factors affecting therapeutic outcomes. METHODS: A total of 132 hepatocellular carcinoma patients treated with TACE combined with RFA were divided into primary group (n=89) and recurrent group (n=43). Their clinical date were reviewed. The overall survival (OS), tumor-free survival (TFS) and safety between 2 groups were compared. Prognostic factors were analyzed with univariate and multivariate analyses. RESULTS: OS rates at 1 and 3 years were 94.4% (84/89) and 70.8% (63/89) in the primary group, and TFS were 76.4% (68/89) and 37.1% (33/89), respectively. The OS rates in the recurrent group were 93.0% (40/43) and 65.1% (28/43), and TFS rates were 41.9% (18/43) and 13.9% (6/43), respectively. The OS rates had no significant difference between 2 groups (x2=0.0068, 0.4353, p=0.9342, 0.5094), but the TFS rates in primary group were significantly higher than in the recurrent group (x2=15.2378, 7.4483, p=0.0001, 0.0063). Multivariate analysis identified presence of portosystemic collaterals, AFP level, total bilirubin and Child-Pugh grading as factors affecting OS, and the presence of portosystemic collaterals and AFP level were two unfavorable prognostic factors influencing TFS. CONCLUSIONS: TACE combined with RFA is helpful in improving the survival rate of patients with primary and recurrent hepatocellular carcinoma. Presence of portosystemic collaterals, AFP level,ptotal bilirubin and Child-Pugh grading were the factors affecting OS.


Assuntos
Ablação por Cateter , Quimioembolização Terapêutica , Neoplasias Hepáticas/tratamento farmacológico , Neoplasias Hepáticas/radioterapia , Terapia Combinada , Feminino , Hepatectomia , Humanos , Fígado/patologia , Fígado/efeitos da radiação , Fígado/cirurgia , Neoplasias Hepáticas/cirurgia , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/patologia , Recidiva Local de Neoplasia/cirurgia , Resultado do Tratamento
9.
Bioinformatics ; 35(15): 2626-2633, 2019 08 01.
Artigo em Inglês | MEDLINE | ID: mdl-30590394

RESUMO

MOTIVATION: Protein post-translational modifications (PTMs) regulate a wide range of cellular protein functions. Many PTM sites from the same (intra) or different (inter) proteins often cooperate with each other to perform a function, which is defined as PTM cross-talk. PTM cross-talk within proteins attracted great attentions in the past a few years. However, the inter-protein PTM cross-talk is largely under studied due to its large protein pair space and lack of a gold standard dataset, even though the PTM interplay between proteins is a key element in cell signaling and regulatory networks. RESULTS: In this study, 199 inter-protein PTM cross-talk pairs in 82 pairs of human proteins were collected from literature, which to our knowledge is the first effort in compiling such dataset. By comparing with background PTM pairs from the same protein pairs, we found that inter-protein cross-talk PTM pairs have higher sequence co-evolution at both PTM residue and motif levels. Also, we found that cross-talk PTMs have higher co-modification across multiple species and 88 human tissues or conditions. Furthermore, we showed that these features are predictive for PTM cross-talk between proteins, and applied a random forest model to integrate these features with achieving an area under the receiver operating characteristic curve of 0.81 in 10-fold cross-validation, prevailing over using any single feature alone. Therefore, this method would be a valuable tool to identify inter-protein PTM cross-talk at proteome-wide scale. AVAILABILITY AND IMPLEMENTATION: A web server for prioritization of both intra- and inter-protein PTM cross-talk candidates is at http://bioinfo.bjmu.edu.cn/ptm-x/. Python code for local computer is also freely available at https://github.com/huangyh09/PTM-X. SUPPLEMENTARY INFORMATION: Supplementary data are available at Bioinformatics online.


Assuntos
Processamento de Proteína Pós-Traducional , Fenômenos Fisiológicos Celulares , Humanos , Proteoma , Curva ROC
10.
Medicine (Baltimore) ; 97(37): e12395, 2018 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-30213010

RESUMO

RATIONALE: Primary biliary cholangitis (PBC) is a liver autoimmune disease. If this disease is associated with other liver injury factors, both misdiagnosis and missed diagnosis will easily occur. Therefore, detailed disease history collection and related laboratory examination should be performed on patients with liver injury for unidentified causes. When necessary, liver biopsy should be performed to confirm the histopathological diagnosis. PATIENT CONCERNS: The subject patient was a 63-year-old Chinese male with chronic liver injury who had a drinking history of about 30 years and drank 500 g daily on average and began to take health products and dietary supplements (multivitamins) since June 2014. DIAGNOSES: Drug-induced liver injury (DILI) and alcoholic fatty liver disease (AFLD) were initially considered because the patient had a history of using health products (HP) and dietary supplements (DS) and drinking alcohol. However, he was subsequently considered with PBC based on the findings of anti-mitochondrial antibody positivity and elevated immunoglobulin level. Obstructive jaundice and space-occupying lesion in the liver were excluded by imaging examinations. Liver biopsy was performed to confirm the reasons for liver injury. Histopathological examination was conducted, and the patient was diagnosed with PBC associated with DILI and alcoholic liver fibrosis. INTERVENTIONS: Ursodeoxycholic acid, glycyrrhizic acid, and methylprednisolone (small dose) were used to treat the patient. OUTCOMES: After 2 months, the serum levels of ALT, AST, AKP, GGT, and globulin returned to normal. After 4 months, the patient showed liver injury once again (an increase in ALT, AST, AKP, GGT and GLB) caused by repaglinide administration due to hyperglycemia. Ursodeoxycholic acid and methylprednisolone replaced the repaglinide administration. After 3 weeks, the levels of ALT, AST, AKP, GGT, and GLB returned to normal again. LESSONS: The correct knowledge on PBC and early-stage recognition and diagnosis should be emphasized. When other causes of the liver injury cannot be excluded, liver biopsy is suggested. Histopathological change can be used to further clarify the reasons for liver injury and the principal contradiction as well as to guide the theraputic regimen.


Assuntos
Doença Hepática Induzida por Substâncias e Drogas/complicações , Colangite/etiologia , Fígado Gorduroso Alcoólico/complicações , Cirrose Hepática Biliar/etiologia , Colangite/imunologia , Humanos , Cirrose Hepática Biliar/imunologia , Masculino , Pessoa de Meia-Idade
11.
Clin Infect Dis ; 62(3): 305-12, 2016 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-26433720

RESUMO

BACKGROUND: To investigate the epidemiology of hepatitis B and C infections and the benefits of programs aimed at hepatitis prevention and control in Northeastern China. METHODS: Individuals receiving health examinations were recruited to complete a questionnaire and undergo laboratory tests for hepatitis infection. Data on demographic characteristics, results of hepatitis B virus (HBV) and hepatitis C virus (HCV) serological tests, for HBV and HCV infection were analyzed. RESULTS: Among 227 808 study participants, the hepatitis B surface antigen (HBsAg) and anti-HCV-positive rates were 6.1% and 3.0%, respectively. Among HBsAg-positive participants, 63.8% tested positive for HBV DNA, 20.2% had an abnormal alanine aminotransferase (ALT) level, and 10.7% had cirrhosis. Among anti-HCV-positive participants, 57.2% tested positive for HCV RNA, 29.6% had an abnormal ALT level, and 8.4% had cirrhosis. Among HBsAg- or anti-HCV-positive participants, 47.1% and 32.0%, respectively, were aware of their infection. Among participants infected with HBV or HCV and suitable for antivirus treatment, 23.5% and 16.1%, respectively, had received antivirus treatment. The HBV plus HCV coinfection rate was 0.08%. CONCLUSIONS: The HBsAg-positive rate decreased significantly after implementation of recently introduced HBV control programs in China. However, the anti-HCV-positive rate showed only a slight decrease, indicating that programs for the prevention and control of hepatitis viruses require continued strengthening. CHINESE CLINICAL TRIALS REGISTRATION: ChiCTR-ECS-13004009.


Assuntos
Controle de Doenças Transmissíveis/métodos , Hepatite B Crônica/epidemiologia , Hepatite B Crônica/prevenção & controle , Hepatite C Crônica/epidemiologia , Hepatite C Crônica/prevenção & controle , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , China/epidemiologia , Estudos Transversais , Feminino , Humanos , Lactente , Masculino , Pessoa de Meia-Idade , Testes Sorológicos , Inquéritos e Questionários , Adulto Jovem
12.
Mol Med Rep ; 12(5): 6835-40, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-26352155

RESUMO

Mesenchymal stem cells (MSCs) with the ability to differentiate into insulin­producing cells (IPCs) have become the most promising means of therapy for diabetes mellitus. Adipose­derived stromal cells (AdSCs), having similar characteristics to those of derived MSCs, are known to exhibit extensive proliferation potential and are able to undergo multi­lineage differentiation. Whether AdSCs can differentiate into insulin­producing cells (IPCs), however, has not been sufficiently elucidated. Therefore, the present study sought to investigate the in vitro differentiation of rabbit (r)AdSCs into IPCs, which may provide an abundant source of cells to treat diabetes. rADSCs were obtained from liposuction aspirates and then induced with glucagon­like peptide­1 and nicotinamide to differentiate into insulin­secreting cells. Differentiation was evaluated by the analysis of morphology, dithizone (DTZ) staining, reverse transcription polymerase chain reaction (RT­PCR), western blot analysis and a glucose challenge assay with detection of insulin secretion by ELISA. Morphological phase­contrast microscopic observation revealed typical islet­like cell clusters following 21 days of differentiation. DTZ staining also showed that differentiated cells were positive and undifferentiated cells were negative for insulin production. Furthermore, RT­PCR analysis confirmed the mRNA expression of insulin, PDX1 and GLUT2 in differentiated cells. Western blot analysis showed that insulin was expressed by the differentiated cells. The glucose challenge assay showed that insulin secretion of the IPCs was in a glucose dependent manner. These findings implied that AdSCs are able to differentiate into IPC in vitro, and are therefore promising candidates for the treatment of diabetes.


Assuntos
Diferenciação Celular , Insulina/biossíntese , Células Estromais/fisiologia , Tecido Adiposo Branco/citologia , Animais , Técnicas de Cultura de Células , Forma Celular , Células Cultivadas , Glucose/metabolismo , Insulina/metabolismo , Secreção de Insulina , Masculino , Coelhos
13.
Singapore Med J ; 54(8): 451-7, 2013 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-24005452

RESUMO

INTRODUCTION: Helicobacter (H.) hepaticus infection causes chronic active hepatitis and induces hepatocellular tumours in A/JCr mice, but evidence of this in humans is scarce. This study aimed to demonstrate the correlation between H. hepaticus and human primary hepatocellular carcinoma (HCC). METHODS: The sera of 50 patients with primary HCC were tested for the presence of anti-H. pylori and anti-H. hepaticus immunoglobulin G (IgG) antibodies. The liver tissues of patients who tested positive for serum antibody were analysed for H. hepaticus-specific 16S rRNA, H. hepaticus cdtB, H. pylori cagA, H. pylori vacA and H. pylori ureC genes using polymerase chain reaction. RESULTS: After the anti-H. pylori antibodies in the serum samples were absorbed by H. pylori antigen, the anti-H. hepaticus IgG serum antibody detection rate was 50.0% in patients with primary HCC. This was significantly higher (p < 0.001) than the detection rate in the benign liver tumour (7.7%) and normal liver tissue (6.3%) groups. Of the 25 primary HCC samples that tested positive for anti-H. hepaticus IgG serum antibody, the H. hepaticus-specific 16S rRNA gene was detected in nine (36.0%) samples. Sequencing showed that the polymerase chain reaction-amplified product exhibited 95.5%-100% homology to the H. hepaticus-specific 16S rRNA gene. Among these nine primary HCC tissue samples, the H. hepaticus cdtB gene was detected in four (44.4%) samples, while no such expression was observed in the benign liver tumour or normal liver tissue groups. CONCLUSION: The present study identified the presence of H. hepaticus infection in patients with primary HCC using serological and molecular biological detection, suggesting that H. hepaticus infection may be involved in the progression of HCC.


Assuntos
Carcinoma Hepatocelular/microbiologia , Infecções por Helicobacter/microbiologia , Helicobacter hepaticus/isolamento & purificação , Neoplasias Hepáticas/microbiologia , Adulto , Idoso , DNA Bacteriano/genética , Feminino , Infecções por Helicobacter/genética , Helicobacter hepaticus/genética , Helicobacter pylori/genética , Helicobacter pylori/isolamento & purificação , Humanos , Imunoglobulina G/sangue , Masculino , Pessoa de Meia-Idade , Reação em Cadeia da Polimerase
14.
Zhonghua Gan Zang Bing Za Zhi ; 19(9): 670-3, 2011 Sep.
Artigo em Chinês | MEDLINE | ID: mdl-22152381

RESUMO

OBJECTIVE: To evaluate antiviral effects of Peg-IFNa-2a in patients with chronic hepatitis B. METHODS: 92 chronic hepatitis B patients were enrolled to receive the treatment with Peg-IFNa-2a 180 µg subcutaneous injection once weekly. The patients who did not get early response were divided into 3 groups: group 1, extend the treatment to 72 weeks; group 2, combined with nucleus(s)ide analogue (entecavir or adefovir) treatment; group 3, continue the treatment until 48 weeks. HBV DNA and quantitative HBsAg were assessed at baseline, week 12, 24, 36 and after 24 weeks follow-up. RESULTS: Patients in group 1 had significantly higher SVR rate (78.3%) than patients in group 3 (38.1%, X2=7.33, P<0.05). The mean reduction of HBsAg in group 1 at 24 weeks of post-treatment follow up was higher than that in group 3 (t=2.11, P<0.05). In group 2 the mean reductions of HBV DNA at 24 weeks of post-treatment follow up were (3.9+/-1.1) log10 copy/ml and (3.7+/-1.3) log10 copy/ml respectively with combination of entecavir or adefovir, both of which were significantly higher than that in group 3(t=8.45 and 6.31, P<0.05); the SVR rates in the entecavir group and the adefovir group (83.3% and 85.7%, respectively) were significantly higher than that in group 3 (X2=8.20 and 7.78, P<0.05); the mean reductions of HBsAg in the entecavir group and the adefovir group [(0.8+/-0.5) log10 IU/ml and (0.9+/-0.3) log10 IU/ml, respectively ] were significantly greater than group 3[(0.4+/-0.3) log10 IU/ml, t=3.05 and 4.58, P<0.05]. The level of HBV DNA and C genotype were the main predictors of response. CONCLUSION: Individualizing therapy by prolonging the duration of Peg-IFNa-2a treatment to 72 weeks or adding nucleoside analogues such as entecavir and adefovir in patients without early response may substantially increase the SVR rate and lead to the decrease of HBsAg.


Assuntos
Antivirais/uso terapêutico , Hepatite B Crônica/tratamento farmacológico , Interferon-alfa/uso terapêutico , Adenina/análogos & derivados , Adenina/uso terapêutico , Adulto , Feminino , Guanina/análogos & derivados , Guanina/uso terapêutico , Humanos , Masculino , Pessoa de Meia-Idade , Organofosfonatos/uso terapêutico , Resultado do Tratamento
15.
Zhonghua Gan Zang Bing Za Zhi ; 18(4): 259-62, 2010 Apr.
Artigo em Chinês | MEDLINE | ID: mdl-20460043

RESUMO

OBJECTIVE: To analyze antiviral effects of telbivudine in patients with chronic hepatitis B. METHOD: 72 chronic hepatitis B patients without prior history of antiviral therapy were treated with telbivudine 600mg once daily. RESULTS: At week 4, 37.5% of the patients achieved undetectable HBV DNA, and 33.3% achieved ALT normalization. At week 108, 87.5% of the patients achieved undetectable HBV DNA, and 91.7% achieved ALT normalization. HBeAg seroconversion occurred in 23.9% of the 46 HBeAg positive patients. The rates of undetectable HBV DNA and HBeAg seroconversion at week 108 in the patients with HBV DNA < 3 log(10) copies/ml at week 12 were significant higher than those in patients with HBV DNA >or= 3 log(10) copies/ml. The rate of undetectable HBV DNA at week 108 in the patients with HBV DNA < 3 log(10) copies/ml at week 24 was significantly higher than that in patients with HBV DNA >or= 3 log(10) copies/ml, and the rate of antiviral resistance rate at week 108 in the patients with HBV DNA < 3 log(10) copies/ml at week 24 was significantly lower than that in patients with HBV DNA >or= 3 log(10) copies/ml. Antiviral therapy could significantly improve Child-Pugh score in patients with liver cirrhosis. CONCLUSION: Telbivudine treatment results in suppression of HBV and high HBeAg seroconversion, and improvement of Child-Pugh score in the patients with liver cirrhosis.


Assuntos
Antivirais/uso terapêutico , Hepatite B Crônica/tratamento farmacológico , Nucleosídeos/uso terapêutico , Pirimidinonas/uso terapêutico , Adulto , DNA Viral/sangue , Feminino , Antígenos E da Hepatite B/sangue , Vírus da Hepatite B/genética , Vírus da Hepatite B/fisiologia , Hepatite B Crônica/virologia , Humanos , Masculino , Pessoa de Meia-Idade , Telbivudina , Timidina/análogos & derivados , Resultado do Tratamento , Replicação Viral
16.
Zhonghua Gan Zang Bing Za Zhi ; 18(2): 109-12, 2010 Feb.
Artigo em Chinês | MEDLINE | ID: mdl-20196949

RESUMO

OBJECTIVE: To analyze antiviral effects of entecavir in patients with hepatitis B virus-related cirrhosis. METHODS: 104 patients of hepatitis B virus-related cirrhosis with no previous history of antiviral therapy were treated with entecavir 0.5 mg once daily. 37 patients were taken hepatic histologic examination before and after the treatment. RESULTS: Mean reductions of serum HBV DNA was 5.1 log10 96 weeks after the treatment, HBV DNA became undetectable in 98.1% patients, and ALT became normal in 80.7% patients; HBeAg seroconversion occurred in 13.9% of the 72 HBeAg positive patients; 61.5% of these patients were infected with genotype C HBV, and 26.9% were infected with genotype B HBV. The genotype of HBV was not associated with the therapeutical effect. Child-pugh score was associated with the progression of the disease: the proportion of patients with disease progression was highest in Child-Pugh C grade patients and lowest in Child-Pugh A grade patients. The level of the HBV DNA load was positively correlated with Knodell HAI score at the baseline and 96 weeks after the treatment. CONCLUSION: Entecavir treatment results in suppression of HBV replication and delayed progression of fibrosis in patients with hepatitis B virus-related cirrhosis.


Assuntos
Antivirais/uso terapêutico , DNA Viral/sangue , Guanina/análogos & derivados , Hepatite B Crônica/tratamento farmacológico , Cirrose Hepática/tratamento farmacológico , Adulto , Alanina Transaminase/sangue , Feminino , Genótipo , Guanina/uso terapêutico , Antígenos E da Hepatite B/sangue , Vírus da Hepatite B/efeitos dos fármacos , Vírus da Hepatite B/genética , Vírus da Hepatite B/isolamento & purificação , Hepatite B Crônica/complicações , Hepatite B Crônica/virologia , Humanos , Cirrose Hepática/etiologia , Cirrose Hepática/virologia , Masculino , Pessoa de Meia-Idade , Fatores de Tempo , Resultado do Tratamento , Replicação Viral/efeitos dos fármacos
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