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1.
J Med Genet ; 2021 Sep 20.
Artigo em Inglês | MEDLINE | ID: mdl-34544842

RESUMO

BACKGROUND: A large number of new causative and risk genes for amyotrophic lateral sclerosis (ALS) have been identified mostly in patients of European ancestry. In contrast, we know relatively little regarding the genetics of ALS in other ethnic populations. This study aims to provide a comprehensive analysis of the genetics of ALS in an unprecedented large cohort of Chinese mainland population and correlate with the clinical features of rare variants carriers. METHODS: A total of 1587 patients, including 64 familial ALS (FALS) and 1523 sporadic ALS (SALS), and 1866 in-house controls were analysed by whole-exome sequencing and/or testing for G4C2 repeats in C9orf72. Forty-one ALS-associated genes were analysed. FINDINGS: 155 patients, including 26 (40.6%) FALS and 129 (8.5%) SALS, carrying rare pathogenic/likely pathogenic (P/LP) variants of ALS causative genes were identified. SOD1 was the most common mutated gene, followed by C9orf72, FUS, NEK1, TARDBP and TBK1. By burden analysis, rare variants in SOD1, FUS and TARDBP contributed to the collective risk for ALS (p<2.5e-6) at the gene level, but at the allelic level TARDBP p.Gly294Val and FUS p.Arg521Cys and p.Arg521His were the most important single variants causing ALS. Clinically, P/LP variants in TARDBP and C9orf72 were associated with poor prognosis, in FUS linked with younger age of onset, and C9orf72 repeats tended to affect cognition. CONCLUSIONS: Our data provide essential information for understanding the genetic and clinical features of ALS in China and for optimal design of genetic testing and evaluation of disease prognosis.

2.
Artigo em Inglês | MEDLINE | ID: mdl-33631431

RESUMO

Piao chicken, a rare Chinese native poultry breed, lacks primary tail structures, such as pygostyle, caudal vertebra, uropygial gland, and tail feathers. So far, the molecular mechanisms underlying tail absence in this breed remain unclear. We comprehensively employed comparative transcriptomic and genomic analyses to unravel potential genetic underpinnings of rumplessness in the Piao chicken. Our results reveal many biological factors involved in tail development and several genomic regions under strong positive selection in this breed. These regions contain candidate genes associated with rumplessness, including Irx4, Il18, Hspb2, and Cryab. Retrieval of quantitative trait loci (QTL) and gene functions implied that rumplessness might be consciously or unconsciously selected along with the high-yield traits in Piao chicken. We hypothesize that strong selection pressures on regulatory elements might lead to changes in gene activity in mesenchymal stem cells of the tail bud. The ectopic activity could eventually result in tail truncation by impeding differentiation and proliferation of the stem cells. Our study provides fundamental insights into early initiation and genetic basis of the rumpless phenotype in Piao chicken.

3.
Int J Neurosci ; 131(5): 425-432, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-32336203

RESUMO

BACKGROUND: The durative endoplasmic reticulum stress (ERS) and subsequent apoptosis contributes to the development and progression of Alzheimer's disease (AD). MiR-326 can reduce pyruvate kinase M2 (PKM2) expression, leading to ERS. Whereas, lncRNA RPPH1 is able to increase dendritic spine density and protect hippocampal pyramidal neurons through targeting miR-326. Our study aims to investigate the regulation of lncRNA RPPH1 and miR-326/PKM2 on ERS and related apoptosis in AD. METHODS: SH-SY5Y cells treated with Aß25-35 were selected as an in vitro AD model. RPPH1 and miR-326 overexpression and silencing cells were established by transforming vectors. The expression of RPPH1 and miR-326 were detected by qRT-PCR. MTT, flow cytometric, intracellular calcium assay and Western blot were used to test the functions of RPPH1 and miR-326 in SH-SY5Y cell proliferation, apoptosis and ERS. Dual-luciferase assay was used to detect the interaction among RPPH1, miR-326 and PKM2. RESULTS: RPPH1 overexpression enhanced the viability of SH-SY5Y cells, and attenuated the apoptosis of of SH-SY5Y cells. Moreover, RPPH1 overexpression down-regulated ER stress related proteins such as GRP78, CHOP and cleaved caspase-12. Mechanistically, RPPH1 directly targeted miR-326, thereby counteracting its inhibitory effect on PKM2 expression, contributing to attenuation of apoptosis and ERS induced by Aß25-35. CONCLUSION: Aß25-35-induced ERS and apoptosis in SH-SY5Y cells can be attenuated by lncRNA RPPH1 through regulating miR-326/PKM2 axis. This study provided therapeutic options for AD patients.

4.
Int. j. morphol ; 38(2): 247-251, abr. 2020. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1056430

RESUMO

Nine tumor and various potential biomarkers were measured and combined the information to diagnose disease, all patients accepted fiber bronchoscopy brush liquid based cytologyand histopathology examination in order to reliably detect lung cancer. The samples from 314 Chinese lung cancer patients were obtained and CK5/6, P63, P40, CK7, TTF-1, NapsinA CD56, Syn and CgA were measured with the immunohistochemical SP method and analyzed correlation of the expression of these markers with pathological and clinical features of squamous cell carcinoma, adenocarcinoma, and small cell lung carcinoma. Squamous cell carcinoma, adenocarcinoma and small cell carcinoma were 61 cases, 114 cases and 139 cases,CK5/6 and P63 expression were more frequent in squamous cell carcinoma, with sensitivity and specificity of 77.05 % and 96.44 %, 83.61 % and 88.93 %,and compared with adenocarcinoma and small cell carcinoma difference was statistically significant (P<0.05), The incidences of a positive P40 expression were 100 % in squamous cell carcinoma, with specificity of 98.81 %.CK7, TTF-1 and NapsinA expression were more frequent in adenocarcinoma, with sensitivity and specificity of 85.09 % and 78.69 %, 79.82 % and 93.44 %, 56.14 % and 95.08 %, and compared with squamous cell carcinoma and small cell carcinoma difference was statistically significant (P<0.05). TTF-1, Syn, CgA and CD56 expression were more frequent in adenocarcinoma, with sensitivity and specificity of 86.33 % and 93.44 %, 89.21 % and 98.36 %, 74.10 % and 100 %, 96.40 % and 96.72 %. The combined detection of CK5/6, P63 and P40 were more useful and specific in differentiating squamous cell carcinoma. CK7, TTF-1 and NapsinA were more useful and specific in differentiating lung adenocarcinoma. The impaired CD56, TTF-1, Syn and CgA reflects the progression of small cell lung cancer.


Se midieron tumores y utilizaron nueve biomarcadores potenciales y se analizó la información para diagnosticar la enfermedad. A todos los pacientes se les realizó citología en líquido con broncoscopía de fibra y examen histopatológico para detectar de manera confiable el cáncer pulmonar. Se obtuvieron muestras de 314 pacientes chinos con cáncer de pulmón y CK5 / 6, P63, P40, CK7, TTF-1, Napsina A, CD56, Syn y CgA se midieron a través de histoquímica SP y analizaron la correlación de la expresión de estos marcadores con características patológicas y clínicas de carcinoma de células escamosas, adenocarcinoma y carcinoma de células pequeñas en el cáncer de pulmón. El carcinoma de células escamosas, el adenocarcinoma y el carcinoma de células pequeñas fueron 61 casos, 114 casos y 139 casos, respectivamente, la expresión de CK5 / 6 y P63 fueron más frecuentes en el carcinoma de células escamosas, con una sensibilidad y especificidad del 77,05 % y 96,44 %, 83,61 % y 88,93 %, y en comparación con el adenocarcinoma y el carcinoma de células pequeñas, la diferencia fue estadísticamente significativa (P <0,05). La incidencia de ap la expresión positiva P40 fue del 100 % en el carcinoma de células escamosas, con una especificidad del 98,81 %. La expresión de CK7, TTF-1 y NapsinA fueron más frecuentes en el adenocarcinoma, con una sensibilidad y especificidad del 85,09 % y 78,69 %, 79,82 % y 93,44 %, 56,14 % y 95,08 %, y en comparación con el carcinoma de células escamosas y la diferencia de carcinoma de células pequeñas fue estadísticamente significativa (P <0,05) .TTF-1, Syn, CgA y la expresión de CD56 fueron más frecuentes en adenocarcinoma, con sensibilidad y especificidad de 86.33 % y 93.44 %, 89.21 % y 98.36 %, 74.10 % y 100 %, 96.40 % y 96.72 %. La detección combinada de CK5 / 6, P63 y P40 fue más útil y específica en la diferenciación del carcinoma de células escamosas. CK7, TTF-1 y NapsinA fueron más útiles y específicos para diferenciar el adenocarcinoma de pulmón. El deterioro de CD56, TTF-1, Syn y CgA refleja la progresión del cáncer de pulmón de células pequeñas.


Assuntos
Humanos , Carcinoma/metabolismo , Carcinoma/patologia , Neoplasias Pulmonares/metabolismo , Neoplasias Pulmonares/patologia , Fragmentos de Peptídeos/metabolismo , Fatores de Transcrição/metabolismo , Imuno-Histoquímica , Carcinoma de Células Escamosas/metabolismo , Carcinoma de Células Escamosas/patologia , Adenocarcinoma/metabolismo , Adenocarcinoma/patologia , Biomarcadores Tumorais/metabolismo , Ácido Aspártico Endopeptidases/metabolismo , Sensibilidade e Especificidade , Carcinoma de Células Pequenas/metabolismo , Carcinoma de Células Pequenas/patologia , Antígeno CD56/metabolismo , Proteínas Supressoras de Tumor/metabolismo , Queratinas Tipo II/metabolismo , Queratina-7/metabolismo , Fator Nuclear 1 de Tireoide/metabolismo
5.
Int J Neurosci ; 130(5): 443-453, 2020 May.
Artigo em Inglês | MEDLINE | ID: mdl-31718352

RESUMO

Objective: To investigate the role of lncRNA Rpph1 on amyloid-ß induced neuronal injury in SK-N-SH cells and underlying mechanism.Methods: In vitro Alzheimer's disease (AD) model was established using the SK-N-SH cells treated with Aß25-35 peptide. APPswe/PS1ΔE9 double transgenic mice were used as AD animal model. Rpph1 was over-expressed and miR-122 was inhibited or overexpressed in SK-N-SH cells via transfection with pcDNA3.1-oe Rpph1 vector, miR-122 inhibitor or miR-122 mimic, respectively. Cell viabilities and apoptosis were evaluated using MTT or flow cytometry assay, respectively. Quantitative real-time PCR (RT-qPCR) was used to determine expression of Rpph1 and miR-122. Western blotting was used to determine the expression of apoptosis related proteins as well as Wnt/ß-catenin signaling related proteins. Dual luciferase reporter assay was conducted to confirm the binding of miR-122 with predictive binding site in 3' UTR of Rpph1 and Wnt1.Results: Both lncRNA Rpph1 and miR-122 were up-regulated in AD mouse. Either over-expression of Rpph1 or inhibition of miR-122 restored the cell viability or decreased cell apoptosis rate in Aß induced SK-N-SH cells. Overexpression of miR-122 inhibited the cell viability while did not influence the Aß level in SK-N-SH cells. Furthermore, over-expression of Rpph1, as well as inhibition of miR-122, elevated Bcl-2, c-myc, Survivin and decreased Bax expression via activating Wnt/ß-catenin signaling. Dual luciferase reporter assay showed that miR-122 could directly target to 3'UTR of Rpph1 and Wnt1.Conclusion: Both lncRNA Rpph1 and miR-122 were up-regulated in AD mouse and Rpph1 activated Wnt/ß-catenin signaling to ameliorate amyloid-ß induced neuronal apoptosis in SK-N-SH cells via direct targeting miR-122.


Assuntos
Doença de Alzheimer/metabolismo , Peptídeos beta-Amiloides/metabolismo , Apoptose/fisiologia , MicroRNAs/metabolismo , Fragmentos de Peptídeos/metabolismo , RNA Longo não Codificante/metabolismo , Ribonuclease P/metabolismo , Via de Sinalização Wnt/fisiologia , Animais , Linhagem Celular Tumoral , Modelos Animais de Doenças , Humanos , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Transgênicos , Neuroblastoma
6.
Pancreatology ; 19(4): 557-565, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-31122822

RESUMO

Acute pancreatitis (AP) is a type of sterile inflammation of the pancreas, potentially leading to systemic inflammatory response syndrome or multiple organ failure. An emerging evidence that dysfunction of miRNA expression may alter pivotal physiological functions and lead to inflammation infiltration and complication of multiple diseases, including AP. Here, the AP model was successfully replicated using cerulein in vitro and in vivo. RT-qPCR was used to detect low expression of miR-148a in AP. This study verified that IL-6 was a direct target of miR-148a. Over-expression of miR-148a decreased the mRNA and protein levels of IL-6 by RT-qPCR and Elisa. Moreover, over-expression of miR-148a improved the pathological state of AP through H&E and MPO staining and transmission electron microscopy. After over-expressing miR-148a, Western blot and immunohistochemical method were used to confirm the reduction of autophagosomes and autolysosomes, blockade of the levels of p-STAT3, LC3-II, ATG7, ATG4c, Beclin1 and the increased p62 expression in AP. The expression of LAMP-2 was not significantly different. In addition, IL-6 and AG490, the IL-6/STAT3 signaling inhibitor, were used to verify the role of IL-6/STAT3 signaling in the regulation of miR-148a on autophagy in cerulein-induced AP in vitro and in vivo. Taken together, our findings indicate that miR-148a suppresses autophagy via regulating IL-6/STAT3 signaling in cerulein-induced AP in vitro and in vivo. The miR-148a appears to be a promising candidate for the gene therapy of AP.


Assuntos
Autofagia/efeitos dos fármacos , Terapia Genética/métodos , Interleucina-6/biossíntese , MicroRNAs/uso terapêutico , Pancreatite/terapia , Fator de Transcrição STAT3/biossíntese , Transdução de Sinais/efeitos dos fármacos , Doença Aguda , Animais , Linhagem Celular , Ceruletídeo , Regulação para Baixo/efeitos dos fármacos , Regulação da Expressão Gênica/efeitos dos fármacos , Vetores Genéticos , Masculino , Camundongos , Camundongos Endogâmicos BALB C , Pancreatite/induzido quimicamente , Pancreatite/patologia , Ratos , Fator de Transcrição STAT3/efeitos dos fármacos
7.
Bioorg Med Chem Lett ; 27(13): 2863-2867, 2017 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-28487072

RESUMO

Glioblastoma multiform (GBM) is a highly aggressive brain tumor with poor life expectancy, and glioma stem cells (GSCs) are a small population of tumor cells existed in GBM, in which GSCs response to drive GBM recurrence, invasion and contribute to the anti-cancer resistance. GSCs have been identified and developed as a therapeutic target for GBM and can be used in drugs screening. Isocostunolide is a natural sesquiterpenoid and contained abundant resource in medicinal plants, but the anti-cancer efficacies of it against GSCs are still unexplored. In this investigation, the anti-tumor activity of isocostunolide against GSCs was investigated and the result demonstrated that it inhibited the growth of GSCs (GSC-3#, GSC-12#, GSC-18#) significantly with an IC50 value of 2.80µg/ml, 2.61µg/ml, 1.07µg/ml, respectively. In further mechanism study, isocostunolide inhibited GSCs cell proliferation, induced GSCs apoptosis significantly, as well as increased the proportion of the cleavage of caspase-3. The result suggested that isocostunolide induced GSCs apoptosis via the caspase dependent apoptotic pathway. Moreover, isocostunolide damaged GSCs colony formation capacity significantly and exhibited the anti-cancer efficacy against GSCs in vitro.


Assuntos
Antineoplásicos/farmacologia , Apoptose/efeitos dos fármacos , Neoplasias Encefálicas/tratamento farmacológico , Caspase 3/metabolismo , Inibidores de Caspase/farmacologia , Glioma/tratamento farmacológico , Sesquiterpenos/farmacologia , Antineoplásicos/síntese química , Antineoplásicos/química , Neoplasias Encefálicas/patologia , Inibidores de Caspase/síntese química , Inibidores de Caspase/química , Proliferação de Células/efeitos dos fármacos , Relação Dose-Resposta a Droga , Ensaios de Seleção de Medicamentos Antitumorais , Glioma/patologia , Humanos , Estrutura Molecular , Sesquiterpenos/síntese química , Sesquiterpenos/química , Relação Estrutura-Atividade
8.
J Nanosci Nanotechnol ; 15(4): 2845-9, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26353503

RESUMO

Novel, carbonized bacterial cellulose (CBC)/Fe3O4 nanocomposites were synthesized using vacuum filtration and annealing (VFA) methods. The as-synthesized products were characterized by scanning electron microscopy, vibrating sample magnetometry, and transmission electron microscopy. The complex permittivity and permeability of Fe3O4-CBC (5 wt.% CBC)/paraffin wax composites were measured by vector network analysis. To study the microwave absorption (MA) performances, we compared the VFA products with the vacuum filtration (VF) products. The VFA products exhibited better absorption performances because of their larger dielectric loss. When the matching thickness was 2.4 mm, the calculated reflection loss reached a minimum value of -27 dB when VFA was used and a value of -11 dB when VF was used. The wide-range MA properties of these materials lead to potential applications in MA fields.


Assuntos
Carbono/química , Nanopartículas de Magnetita/química , Micro-Ondas , Nanocompostos/química , Nanofibras/química , Nanotecnologia/métodos , Absorção de Radiação
9.
Asian Pac J Cancer Prev ; 16(14): 5843-6, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26320460

RESUMO

BACKGROUND: Detection of cervical high grade lesions in patients with atypical squamous cells of undetermined significance (ASCUS) is still a challenge. Our study tested the efficacy of the paired boxed gene 1 (PAX1) methylation analysis by methylation-sensitive high-resolution melting (MS-HRM) in the detection of high grade lesions in ASCUS and compared performance with the hybrid capture 2 (HC2) human papillomavirus (HPV) test. MATERIALS AND METHODS: A total of 463 consecutive ASCUS women from primary screening were selected. Their cervical scrapings were collected and assessed by PAX1 methylation analysis (MS-HRM) and high-risk HPV-DNA test (HC2). All patients with ASCUS were admitted to colposcopy and cervical biopsies. The Chi- square test was used to test the differences of PAX1 methylation or HPV infection between groups. RESULTS: The specificity, sensitivity, and accuracy for detecting CIN2 + lesions were: 95.6%, 82.4%, and 94.6%, respectively, for the PAX1 MS-HRM test; and 59.7%, 64.7%, and 60.0% for the HC2 HPV test. CONCLUSIONS: The PAX1 methylation analysis by MS-HRM demonstrated a better performance than the high-risk HPV-DNA test for the detection of high grade lesions (CIN2 +) in ASCUS cases. This approach could screen out the majority of low grade cases of ASCUS, and thus reduce the referral rate to colposcopy.


Assuntos
Células Escamosas Atípicas do Colo do Útero/patologia , Neoplasia Intraepitelial Cervical/genética , Metilação de DNA , Fatores de Transcrição Box Pareados/genética , Infecções por Papillomavirus/genética , Neoplasias do Colo do Útero/genética , Adulto , Células Escamosas Atípicas do Colo do Útero/metabolismo , Células Escamosas Atípicas do Colo do Útero/virologia , Neoplasia Intraepitelial Cervical/patologia , Neoplasia Intraepitelial Cervical/virologia , DNA Viral/genética , Feminino , Seguimentos , Humanos , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Papillomaviridae/genética , Papillomaviridae/isolamento & purificação , Infecções por Papillomavirus/patologia , Infecções por Papillomavirus/virologia , Prognóstico , Neoplasias do Colo do Útero/patologia , Neoplasias do Colo do Útero/virologia
10.
Int J Clin Exp Med ; 8(3): 3360-70, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26064226

RESUMO

BACKGROUND: The incidence of serious complications after augmentation mammaplasty with injection of polyacrylamide hydrogel (PAAG) was high. OBJECTIVE: To design a new method for healing of the cavities and cysts after augmentation mammaplasty. METHODS: 102 patients in whom PAAG exceeded the breast and spread to the thoracic-abdominal walls were enrolled and divided into two groups. RESULTS: The flowing masses of different sizes exceeded the breast and spread to the thoracic-abdominal walls, and a large number of PAAG showed flowing degenerative mixture in the tissues and were invaded by many inflammatory cells. PAAG deposited extensively in the breast tissues, armpits and space of the thoracic-abdominal wall, and the breast was connected with the abdominal wall through the fistula of different sizes. At 2 weeks, the percentages of decrease in drainage volume and in lesion lacuna size of the thoracic-abdominal wall (82% and 80%, respectively) in patients receiving the multiple incisions combined with radical therapy were significantly different from those who did not receive the multiple incisions (46% and 45%) (Both P<0.01). At 4 weeks, in some of the patients receiving the multiple incisions combined with radical therapy, the lacuna of the thoracic-abdominal wall disappeared completely, and the lesions with flowing masses had been cleared. CONCLUSIONS: The new method of subareolar incision combined with surgery for inferior segment of mass to clean the mixture and thoroughly eliminate the lacuna of the thoracic-abdominal wall as well as suture to close the intramammary fistula can improve the treatment efficacy.

11.
Clin Invest Med ; 37(4): E203-10, 2014 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-25090259

RESUMO

PURPOSE: Dermal fillers have been proven to be safe in soft tissue augmentation; however, their efficacy in modeling the noses of Asian patients has not been demonstrated. METHODS: In this study, 378 patients were included and underwent augmentation rhinoplasty (Artecoll, n=126; Restylane, n=126 and silicone implants, n=126). The subjective and objective outcomes were evaluated on day 1, and months 1, 3, 6, and 12 after injection rhinoplasty. RESULTS: All patients achieved significant improvement in nasal shape and contour immediately after surgery. Patients treated with Restylane failed to maintain the nasal shape and contour 1 year after surgery, whereas patients undergoing Artecoll rhinoplasty completely maintained the post-treatment nasal shape and contour. More patients with silicone implants experienced adverse events and the severity of these events was greater in the silicone group compared to those in the Restylane and Acetoll groups. CONCLUSION: Artecoll rhinoplasty has a low incidence of adverse effects and the shape and contour of the nose are maintained for a prolonged period.


Assuntos
Colágeno/uso terapêutico , Ácido Hialurônico/análogos & derivados , Rinoplastia/métodos , Silicones/uso terapêutico , Adulto , Grupo com Ancestrais do Continente Asiático , Colágeno/efeitos adversos , Feminino , Humanos , Ácido Hialurônico/efeitos adversos , Ácido Hialurônico/uso terapêutico , Masculino , Polimetil Metacrilato/efeitos adversos , Polimetil Metacrilato/uso terapêutico , Próteses e Implantes , Rinoplastia/efeitos adversos , Silicones/efeitos adversos , Resultado do Tratamento
12.
J Gastroenterol Hepatol ; 29(4): 757-61, 2014 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-24325649

RESUMO

BACKGROUND AND AIM: Endoscopic examinations carry a potential risk of cross-infection, and the traditional reprocessing method is time consuming. We evaluated the safety and efficacy of a novel disposable sheathed gastroscope system in clinical practice in comparison with the conventional gastroscope. METHODS: There were two phases in the study. In phase 1, 20 patients with hepatitis B were randomized into two groups: the sheathed group was examined with the novel disposable sheathed gastroscope (n = 10) and the conventional group with the conventional gastroscope (n = 10). Microbiologic tests were performed on each endoscope afterwards. In the second phase, 1120 patients were randomized again into the same two groups with 568 and 552 patients in the sheathed group and the conventional group, respectively. The time duration of the endoscopic procedure and reprocessing were measured. The pathology detection rate of endoscopic examinations, the patients' subjective feelings, and problems occurred during procedures were also recorded. RESULTS: The total instrument turn-around time in the phase 2 sheathed group (9.9 ± 1.3 min) was significantly shorter than the conventional group (39.0 ± 1.4 min, P = 0.000). The mean procedural time was slightly longer in the sheathed group than in the conventional group (4.9 ± 1.4 vs 4.1 ± 1.3 min, P = 0.000). However, the duration of endoscopic reprocessing was much shorter (4.9 ± 0.2 vs 35 ± 0.2 min, P = 0.000). No significant differences were observed in patient discomfort, optical clarity, or pathology detection rate. There were no complications in either group, and no microbial contamination was detected in phase 1 of the study. CONCLUSIONS: Compared with the conventional gastroscope, the novel disposable sheathed gastroendoscope is safe and more efficient in clinical practice.


Assuntos
Infecção Hospitalar/prevenção & controle , Equipamentos Descartáveis , Contaminação de Equipamentos/prevenção & controle , Segurança de Equipamentos , Gastroscópios , Adulto , Carga Bacteriana , China , Desinfecção , Equipamentos Descartáveis/microbiologia , Gastroscópios/microbiologia , Hepatite B/prevenção & controle , Vírus da Hepatite B/isolamento & purificação , Humanos , Controle de Infecções/métodos , Masculino , Risco , Fatores de Tempo
14.
Oncol Lett ; 6(2): 576-582, 2013 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-24137374

RESUMO

The aim of the present study was to investigate the efficacy of colorectal cancer (CRC) screening with a three-tier fecal occult blood test (FOBT) in the Chinese population. The study was performed between 1987 and 2008 at the Beijing Military General Hospital, in a cohort of army service males and females aged >50 years. Between 1987 and 2005, a three-tier screening program, comprising guaiac-based FOBTs (gFOBTs), followed by immunochemical FOBTs for positive guaiac test samples and then colonoscopy for positive immunochemical test subjects, was performed annually. The cohort was followed up until 2008. The cohort included 5,104 subjects, of which, 3,863 subjects participated in screening (screening group) and 1,241 did not (non-screening group). The two groups did not differ in age, gender or other major risk factors for colon cancer. Overall, 36 CRCs occurred in the screening group and 21 in the non-screening group. Compared with the non-screening group, the relative risk for the incidence and mortality of CRC was 0.51 [95% confidence interval (CI), 0.30-0.87] and 0.36 (95% CI, 0.18-0.71), respectively, in the screening group. The general sensitivity of this three-tier FOBT was 80.6% (95% CI, 65.3-91.1). Thus, annual screening using the three-tier FOBT program may reduce the CRC incidence and mortality rate.

15.
Zhonghua Yi Xue Za Zhi ; 93(14): 1044-6, 2013 Apr 09.
Artigo em Chinês | MEDLINE | ID: mdl-23902832
16.
Int J Mol Med ; 32(3): 615-22, 2013 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-23857156

RESUMO

In abnormal skin wound healing, hypertrophic scars (HS) are characterized by excessive fibroblast hypercellularity and an overproduction of collagen, leading to atypical extracellular matrix (ECM) remodeling. Although the exact mechanisms of HS remain unclear, decreased HS fibroblast (HSFB) apoptosis and increased proliferation are evident in the development of HS. In this study, the contribution of the second mitochondria-derived activator of caspases/direct inhibitor of apoptosis protein (IAP)-binding protein with a low isoelectric point (pI) (Smac/DIABLO), an apoptosis-promoting protein released from the mitochondria, was investigated in human normal skin and HSFB cultures. The expression of Smac/DIABLO is usually decreased in many malignant tumors compared with normal tissues. Immunohistochemical analysis of skin tissues and the western blot analyses of fibroblasts revealed that the expression of Smac/DIABLO was lower in HS tissues compared with normal skin tissues. Of note, adenovirus-mediated Smac/DIABLO overexpression in the cultured HSFBs significantly reduced cell proliferation, as detected by the cell counting kit-8, and increased caspase-3 and -9 activity, as detected by spectrofluorimetry. In addition, it increased apoptosis, as detected by fluorescence-activated cell sorting (FACS). Furthermore, we found that the silencing of Smac with siRNA in the HSFBs induced a noticeable decrease in caspase-3 and -9 activity, leading to a significant reduction in apoptosis. In addition, the mRNA expression of type I and III pro-collagen detected in the HSFBs was significantly increased following the silencing of Smac with siRNA and was inhibited following Smac/DIABLO overexpression, as shown by real-time RT-PCR. In conclusion, Smac/DIABLO decreases the proliferation and increases the apoptosis of HSFBs. To our knowledge, the data from our study suggest for the first time that Smac/DIABLO is a novel therapeutic target for HS.


Assuntos
Apoptose/genética , Cicatriz Hipertrófica/genética , Fibroblastos/metabolismo , Peptídeos e Proteínas de Sinalização Intracelular/genética , Proteínas Mitocondriais/genética , Adolescente , Adulto , Proteínas Reguladoras de Apoptose , Caspase 3/metabolismo , Caspase 9/metabolismo , Proliferação de Células , Criança , Pré-Escolar , Cicatriz Hipertrófica/metabolismo , Feminino , Expressão Gênica , Humanos , Peptídeos e Proteínas de Sinalização Intracelular/metabolismo , Masculino , Proteínas Mitocondriais/metabolismo , Pró-Colágeno/genética , Pró-Colágeno/metabolismo , Pele/metabolismo , Pele/patologia , Adulto Jovem
17.
Cell Oncol (Dordr) ; 36(3): 225-31, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23640085

RESUMO

BACKGROUND: Lynch syndrome (or HNPCC) is a colorectal cancer syndrome caused by germline mutations in either one of the DNA mismatch repair (MMR) genes hMLH1, hMSH2, hMSH6 or hPMS2. Mutations in hMLH1 and hMSH2 are most prevalent. Here we aimed to determine the cancer risk of MMR gene mutation carriers and, in addition, the efficacy of colonoscopy surveillance in Chinese Lynch syndrome family members with and without MMR gene mutations. METHODS: A Lynch syndrome family registry encompassing 106 families in Northern China was recently established. Detailed pedigree data for each family were collected and hMLH1 and hMSH2 gene mutation analyses were performed. Germ-line mutations were identified in probands from 42 of these families, and additional genetic analyses were performed in each member of these 42 families to identify mutation and non-mutation carriers. Among the family members included, 180 received colonoscopy and the remaining cases were followed without colonoscopy. RESULTS: Overall 54.8 % of the Lynch syndrome family members carried MMR gene mutations, and these mutation carriers exhibited significantly higher colorectal cancer and other Lynch syndrome-associated cancer risks as compared to non-mutation carriers. The cumulative risk for all Lynch syndrome-related cancers at age 70 was 93.8 % for both hMLH1 and hMSH2 mutation carriers, and 81.7 % and 93.1 % for colorectal cancer at this age, respectively. Whereas 43 of 102 (42.2 %) mutation carriers exhibited significant colonoscopy findings, including 10 colorectal cancers, none of 78 non-mutation carriers exhibited significant findings, and no cancers were detected. In addition, in the mutation carriers, colonoscopy surveillance led to the detection of more early stage cancers than in the non-surveillance group (70.0 % versus 36.5 %, p < 0.01). CONCLUSION: In Lynch syndrome family members, we recommend pre-symptomatic MMR gene mutation analysis in order to identify high risk individuals for colonoscopy surveillance.


Assuntos
Grupo com Ancestrais do Continente Asiático/genética , Colonoscopia , Neoplasias Colorretais Hereditárias sem Polipose/epidemiologia , Neoplasias Colorretais Hereditárias sem Polipose/genética , Reparo de Erro de Pareamento de DNA/genética , Análise Mutacional de DNA , Mutação/genética , Adulto , Idoso , China/epidemiologia , Família , Feminino , Predisposição Genética para Doença , Mutação em Linhagem Germinativa/genética , Humanos , Masculino , Pessoa de Meia-Idade , Vigilância da População , Fatores de Risco
18.
Zhonghua Zheng Xing Wai Ke Za Zhi ; 28(4): 274-7, 2012 Jul.
Artigo em Chinês | MEDLINE | ID: mdl-23173424

RESUMO

OBJECTIVE: To evaluate the feasibility of 3-Dimensional (3-D) model reconstruction of penis and surrounding structures based on magnetic resonance images, which may provide the model building method for modeling surgery of individual penoplasty. METHODS: Magnetic resonance (MR) images of penis with different imaging parameters were evaluated. With the surface rendering construction, the 3D virtual model was established by Amira software. RESULTS: The anatomical details imaging is better in T2-weighted fast spin-echo images with 3.0 mm slice thickness. The established model based on the MR images can show the soft-tissue, suspensory ligament of the penis. The suspensory ligament stretches between the pubic symphysis and the corpora cavernosa. The penile roots attach to inferior ramus of pubis. CONCLUSIONS: MR imaging provides enough anatomical information for modeling. It can be used for the development of model surgery system of individual penoplasty.


Assuntos
Modelos Anatômicos , Pênis/anatomia & histologia , Adulto , Humanos , Imageamento Tridimensional , Imageamento por Ressonância Magnética , Masculino
20.
Zhonghua Yi Xue Za Zhi ; 92(42): 2955-60, 2012 Nov 13.
Artigo em Chinês | MEDLINE | ID: mdl-23328283

RESUMO

OBJECTIVE: To explore the efficacies of live combined Bacillus subtilis (B. subtilis) and Enterococcus faecium (E. faecium) capsules plus lactulose in the treatment of functional constipation. METHODS: A total of 216 patients fulfilling the diagnostic criteria of functional constipation (slow transit pattern) were randomly enrolled from 9 participating hospitals and allocated into treatment group and control group. The patients of treatment group received lactulose plus live combined B. subtilis and E. faecium capsules for 14 days and only took the latter during the following 14 days. The patients of control group received lactulose plus placebo for 2 weeks and then only took placebo continually for the following 2 weeks. RESULTS: A total of 216 patients were analyzed (treatment group n = 104, control group n = 112). The effective rates of 7-day treatment were 88.46% (n = 92) and 84.82% (n = 95) for treatment and control groups respectively. And those of 28-day treatment were 87.50% (n = 91) and 81.25% (n = 91)respectively. And the inter-group differences were not statistically significant (all P > 0.05). Fecal form, frequency, difficulty, urgency, distension, abdominal pain and expelling rates of barium enema were not statistically significant (all P > 0.05). Comparing the effective rates of 28-day with that of 14-day, differences were not statistically significant in A group (S = 0.5, P = 0.4795), but in B group the effective rates of 28-day were lower than that of 14-day statistically(S = 11, P = 0.0009). CONCLUSION: The regiment of live combined B. subtilis and E. faecium capsules plus lactulose offers better efficacies in the treatment of functional constipation.


Assuntos
Bacillus subtilis , Constipação Intestinal/terapia , Enterococcus faecium , Lactulose/uso terapêutico , Probióticos/uso terapêutico , Adulto , Método Duplo-Cego , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
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