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1.
Cytopathology ; 35(1): 136-144, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-37795924

RESUMEN

BACKGROUND: The management of axillary lymph nodes in early-stage breast cancer patients has changed considerably, with the primary focus shifting from the examination of sentinel lymph nodes (SLNs) to toward the detection of all macro-metastases. However, current methods, such as touch imprint cytology (TIC) and frozen sections, are inadequate for clinical needs. To address this issue, we proposed a novel miniaturised epifluorescence widefield microscope (MEW-M) to assess SLN status intraoperatively for improved diagnostic efficiency. METHODS: A prospective, side-by-side comparison of intraoperative SLN evaluation between MEW-M and TIC was performed. RESULTS: A total of 73 patients with 319 SLNs consecutive enrolled in this study. MEW-M showed significantly superior image quality compared to TIC (median score 3.1 vs 2.1, p < 0.0001) and had a shorter time to issue results (10.3 vs 19.4 min, p < 0.0001). Likelihood ratio analysis illustrated that the positive likelihood ratio value of MEW-M compared with TIC was infinitely great vs 52.37 (95% CI, 21.96-124.90) in model 1 (classifying results into negative/positive), infinitely great vs 52.37 (95% CI, 21.96-124.90) in model 2 (classifying results into macro-metastasis/others, and TIC results followed the same classification as model 1), respectively. Similarly, the negative likelihood ratio values of MEW-M compared with TIC were 0.055 (95% CI, 0.018-0.160) and 0.074 (95% CI, 0.029-0.190) in model 1; and 0.019 (95% CI, 0.003-0.130) vs 0.020 (95% CI, 0.003-0.140) in model 2, respectively. CONCLUSIONS: MEW-M is a promising technique that can be utilised to provide a rapid and accurate intraoperative assessment of SLN in a clinical setting to help improve decision-making in axillary surgery.


Asunto(s)
Neoplasias de la Mama , Ganglio Linfático Centinela , Humanos , Femenino , Ganglio Linfático Centinela/cirugía , Ganglio Linfático Centinela/patología , Neoplasias de la Mama/diagnóstico , Neoplasias de la Mama/cirugía , Neoplasias de la Mama/patología , Biopsia del Ganglio Linfático Centinela/métodos , Tacto , Ganglios Linfáticos/cirugía , Ganglios Linfáticos/patología , Sensibilidad y Especificidad , Periodo Intraoperatorio
2.
Medicine (Baltimore) ; 98(35): e16890, 2019 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-31464919

RESUMEN

To evaluate job burnout and its impacts on mental health among clinical residents in a 3-year standardized residency training program in China.This cross-sectional study was conducted among all residents in the Department of Internal Medicine of the Peking Union Medical College Hospital in August 2017. Job burnout and depressive symptoms were assessed using the Maslach Burnout Inventory-General Survey and the Center for Epidemiological Survey, Depression, respectively.Among the 159 residents who completed the survey, comprising 69 who had graduated from 8-year medical schools and 90 from 5-year schools, the rate of job burnout was 62.2% (100/159) and the rate of depression was 28.3% (45/159). Rates of job burnout and depression in residents completed different years of training showed no significant difference. Rate of job burnout was significantly higher among graduates of 5-year medical schools (76.7%) than among those of 8-year schools (44.9%, P < .001). Pearson chi-squared test revealed a significant correlation between depression and job burnout (P < .001). Multiple logistic regression revealed a significant correlation between job burnout and attendance at 5- or 8-year medical schools (P = .044).Job burnout may be more frequent among graduates from 5-year medical schools than among those from 8-year schools.


Asunto(s)
Agotamiento Profesional/epidemiología , Agotamiento Psicológico/psicología , Depresión/epidemiología , Estrés Laboral/psicología , Adulto , Agotamiento Profesional/psicología , Agotamiento Psicológico/epidemiología , China/epidemiología , Estudios Transversales , Depresión/psicología , Femenino , Humanos , Internado y Residencia , Modelos Logísticos , Masculino , Estrés Laboral/epidemiología , Encuestas y Cuestionarios , Factores de Tiempo , Adulto Joven
3.
BMC Med Educ ; 19(1): 281, 2019 Jul 25.
Artículo en Inglés | MEDLINE | ID: mdl-31345190

RESUMEN

BACKGROUND: The history of standardized residency training programs (SRTP) in China is not long. As one of the top medical colleges in China, Peking Union Medical College Hospital (PUMCH) has the history and experience of the oldest SRTP in the country. Understanding the job status of PUMCH residents would be conducive to a better development of the national resident training in the future. METHODS: This study analyzed the demographic information, job burnout scale, working time, and job status of postgraduate year 1-3 residents that took part in the SRTP of the Department of Internal Medicine of PUMCH in August 2017. RESULTS: The survey data of 159 residents (including PUMCH residents, local-resident-trainees, and clinical postgraduates) were collected. The average working time was 11.38 ± 1.55 h per day and 83.28 ± 8.80 h per week. The average night shift frequency was 4.74 ± 0.59 days. There were 100 residents (62.2%) with symptoms of job burnout, which had a certain correlation with working time (p < 0.05). The self-evaluation of the clinical postgraduates about their working quality of life was lower than that of other residents (p < 0.05). There were various reasons for long working-time, great work pressure, and job burnout. Job burnout was independently associated with the average working time per day (OR = 2.35, 95% CI: 1.47-3.75, P < 0.001) and average length of duty period (OR = 1.52, 95% CI: 1.26-1.84, P < 0.001). CONCLUSION: The job burnout of residents that took part in SRTP at the PUMCH could not be ignored, which had a certain correlation with work time and early training background.


Asunto(s)
Internado y Residencia , Satisfacción en el Trabajo , Tolerancia al Trabajo Programado , Adulto , Agotamiento Profesional/epidemiología , China/epidemiología , Femenino , Humanos , Medicina Interna/educación , Masculino , Tutoría , Calidad de Vida , Encuestas y Cuestionarios , Adulto Joven
4.
Clin Exp Rheumatol ; 35(3): 494-499, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28240594

RESUMEN

OBJECTIVES: This study aimed to examine the long-term efficacy, remission and survival of patients with severe systemic lupus erythematosus (SLE) after the combination treatment with high-dose immunosuppressive therapy (HDIT) and autologous peripheral blood stem cell transplantation (APBSCT). METHODS: Chinese patients with severe SLE receiving combination therapy with HDIT and APBSCT in Peking Union Medical College Hospital were enrolled from July 1999 to October 2005. Disease activity, treatment, and adverse effects of these patients were evaluated. The 10-year overall survival and 10-year remission survival were also analysed. RESULTS: Among the 27 patients, one patient failed to collect enough CD34+ cells and data was missing for two patients. In the end, 24 patients were included in the final analysis. After APBSCT, one patient died, two patients achieved partial remission and 21 (87.5%) achieved remission at 6 months. The median follow-up duration of the 23 patients was 120 months. Fourteen patients had completed a ten-year follow-up. The median proteinuria level of the 14 patients with LN with ten years of follow-up significantly decreased from 4.00 g/24 hours at pre-treatment to 0.00g/24 hours at year 5 and 0.00 g/24 hours at year 10 (both p=0.001). The 10-year overall survival rate and 10-year remission survival rate were both 86.0% (95% CI: 71.1-100.9%). After a median follow-up for 120 months, 16 patients (66.7%) remained in remission, 4 patients were lost to follow-up, 2 patients died and 1 patient remained active. CONCLUSIONS: The combination of HDIT and APBSCT may be an option to improve the survival of severe lupus patients.


Asunto(s)
Inmunosupresores/administración & dosificación , Nefritis Lúpica/terapia , Trasplante de Células Madre de Sangre Periférica , Adolescente , Adulto , China , Femenino , Estudios de Seguimiento , Humanos , Inmunosupresores/efectos adversos , Estimación de Kaplan-Meier , Nefritis Lúpica/diagnóstico , Nefritis Lúpica/mortalidad , Masculino , Persona de Mediana Edad , Trasplante de Células Madre de Sangre Periférica/efectos adversos , Trasplante de Células Madre de Sangre Periférica/mortalidad , Recurrencia , Inducción de Remisión , Índice de Severidad de la Enfermedad , Factores de Tiempo , Trasplante Autólogo , Resultado del Tratamiento , Adulto Joven
5.
Front Med ; 11(1): 62-67, 2017 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-28233246

RESUMEN

Chronic disseminated intravascular coagulation (DIC) is a rare but devastating complication of aortic aneurysm (AA). This study investigated the clinical manifestations, laboratory findings, and treatment of patients with AA-associated chronic DIC (AA-DIC) and explored the mechanisms, duration, and therapeutic response of AA-DIC. We retrospectively reviewed the medical records of 235 AA patients admitted at the Peking Union Medical College Hospital between September 2009 and January 2015. The patients were classified as those with DIC (AA-DIC) and those without DIC (non-DIC). The AA-DIC group showed a significantly higher proportion of female patients and a significantly longer AA disease course than the non-DIC group did. The AA-DIC patients presented mural thrombi, dissecting aneurysms, a family history of AA, and diabetes significantly more frequently than the non-DIC patients did. Furthermore, multiple regression analyses revealed that sex, mural thrombus, aneurysm type, diabetes, and stent surgery are possible independent risk factors for AA-DIC patients. Fifty-two (22.1%) patients presented AA-DIC. Among these patients, 43 had non-typical DIC and 9 had typical DIC; the mortality rate of the latter was 22.2%. The mean age of the patients with typical DIC was significantly higher than of that of patients with non-typical DIC. The non-typical DIC patients also presented abnormal coagulation disorders of varying degrees. Furthermore, heparin or low-molecular-weight heparin improved the clinical symptoms and laboratory parameters in patients with AA and typical DIC. Thus, chronic DIC should be considered in patients with AA.


Asunto(s)
Anticoagulantes/uso terapéutico , Aneurisma de la Aorta/diagnóstico por imagen , Coagulación Intravascular Diseminada/tratamiento farmacológico , Heparina/uso terapéutico , Adulto , Anciano , Anciano de 80 o más Años , Aneurisma de la Aorta/complicaciones , China , Coagulación Intravascular Diseminada/mortalidad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Análisis de Regresión , Estudios Retrospectivos , Tomografía Computarizada por Rayos X
6.
Zhonghua Nei Ke Za Zhi ; 54(9): 789-92, 2015 Sep.
Artículo en Chino | MEDLINE | ID: mdl-26674798

RESUMEN

OBJECTIVE: To evaluate the effects of medical residency training program in postgraduate-year-one (PGY-1) residents at Peking Union Medical College (PUMC) Hospital. METHODS: PGY-1 medical residents at PUMC Hospital were surveyed by a self-administered questionnaire after they completed their first year residency. RESULTS: Forty-nine residents who completed their first year residency training participated in the survey with a 100% response rate. Before training, only a few had bedside (n = 18) and on-call experiences (n = 10). At the end of the one-year-training, all the residents (100%) considered themselves being improved to certain degrees, especially in clinical practice capability, and passed all the examinations. However, 53.1% and 8.2% of all the residents agreed that they need to improve their abilities in teaching (n = 26) and doctor-patient communication (n = 4), respectively. All residents hoped to get further improved by taking part in various forms of teaching activities, including experience summary/sharing and basic skills training. During the first year, 95.9% of them participated in all teaching activities in medicine actively. CONCLUSIONS: The tradition and current models of medical residency training program at PUMC Hospital had a significant impact on professional development of the 1st year resident physicians. It is critical to focus on basic skill training and multi-level teaching to improve residents' clinical competency.


Asunto(s)
Medicina Interna/educación , Internado y Residencia , Beijing , Hospitales , Humanos , Encuestas y Cuestionarios
7.
Chin Med J (Engl) ; 128(10): 1336-9, 2015 May 20.
Artículo en Inglés | MEDLINE | ID: mdl-25963354

RESUMEN

BACKGROUND: H syndrome (OMIM 612391) is a recently described autosomal recessive genodermatosis characterized by indurated hyperpigmented and hypertrichotic skin, as well as other systemic manifestations. Most of the cases occurred in the Middle East areas or nearby countries such as Spain or India. The syndrome is caused by mutations in solute carrier family 29, member 3 (SLC29A3), the gene encoding equilibrative nucleoside transporter 3. The aim of this study was to identify pathogenic SLC29A3 mutations in a Chinese patient clinically diagnosed with H syndrome. METHODS: Peripheral blood samples were collected from the patient and his parents. Genomic DNA was isolated by the standard method. All six SLC29A3 exons and their flanking intronic sequences were polymerase chain reaction (PCR)-amplified and the PCR products were subjected to direct sequencing. RESULTS: The patient, an 18-year-old man born to a nonconsanguineous Chinese couple, had more extensive cutaneous lesions, involving both buttocks and knee. In his genomic DNA, we identified a novel homozygous insertion-deletion, c. 1269_1270delinsA, in SLC29A3. Both of his parents were carriers of the mutation. CONCLUSIONS: We have identified a pathogenic mutation in a Chinese patient with H syndrome.


Asunto(s)
Anomalías Múltiples/diagnóstico , Anomalías Múltiples/genética , Proteínas de Transporte de Nucleósidos/genética , Anomalías Cutáneas/diagnóstico , Anomalías Cutáneas/genética , Adolescente , Pueblo Asiatico , Predisposición Genética a la Enfermedad , Humanos , Masculino , Mutación
8.
Zhongguo Shi Yan Xue Ye Xue Za Zhi ; 22(5): 1316-20, 2014 Oct.
Artículo en Chino | MEDLINE | ID: mdl-25338580

RESUMEN

This study was aimed to explore the possible mechanisms of hepcidin increase in multiple myeloma patients. The clinical information and peripheral venous blood of eligible patients with previously untreated multiple myeloma were collected. Serum concentration of IL-6 was detected by ELISA. Peripheral blood monocytes were isolated by CD14⁺ magnetic beads. The expression of hepcidin, IL-6 and C/EBPα mRNA of monocytes were detected by real time quantitative PCR. The results indicated that the hemoglobin level was reduced in 17 multiple myeloma patients enrolled in study (97.8 ± 27.5 g/L), showing the characteristics of anemia of chronic disease. The hepcidin and C/EBPα expression of peripheral blood monocytes significantly increased (P < 0.01), serum IL-6 was also higher than that in normal controls (P < 0.01). Serum IL-6 positively correlated with monocyte hepcidin and C/EBPα expression (P < 0.05); monocyte C/EBPα expression positively correlated with monocyte hepcidin expression (P < 0.05). It is concluded that the elevated IL-6 may induce hepcidin expression through up-regulating C/EBPα in untreated myeloma patients.


Asunto(s)
Proteína alfa Potenciadora de Unión a CCAAT/metabolismo , Hepcidinas/metabolismo , Mieloma Múltiple/metabolismo , Anemia , Enfermedad Crónica , Humanos , Interleucina-6 , Monocitos , ARN Mensajero , Regulación hacia Arriba
9.
Ann Hematol ; 93(6): 1001-5, 2014 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-24408160

RESUMEN

The objective of this study was to evaluate retrospectively the clinical characteristics, treatments, and outcomes of patients with primary diffuse large B-cell lymphoma (DLBCL) of the female genital tract. The basic characteristics, treatments, and outcomes of six patients diagnosed with primary DLBCL of the female genital tract, including the ovary, uterine cervix, and vagina, treated in our hospital between 2000 and 2012, were analyzed retrospectively. Seven of 323 (2.2 %) newly diagnosed DLBCLs were diagnosed as primary female genital tract DLBCL. Six patients with complete medical data were included in the analysis. The median age at diagnosis was 52.5 years (range 20-65). The presenting symptoms included abnormal vaginal bleeding, increased vaginal discharge, abdominal fullness, and abdominal pain. Two patients had stage IE disease and four patients had stage IIE disease. Treatment included chemotherapy only in five patients, and combined chemotherapy and localized radiation in one patient. After a median follow-up of 58 months, four patients showed relapse in the central nervous system and two had died from progressive disease. The median progression-free survival was 27 months and the median overall survival for this group has not been reached. Patients with primary female genital tract DLBCL may have poor outcomes and a high risk of central nervous system relapse. Central nervous system prophylaxis might be considered in addition to systemic chemotherapy for DLBCL of the female genital tract.


Asunto(s)
Sistema Nervioso Central/patología , Genitales Femeninos/patología , Linfoma de Células B Grandes Difuso/patología , Adolescente , Adulto , Anciano , Anticuerpos Monoclonales de Origen Murino/administración & dosificación , Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Ciclofosfamida/administración & dosificación , Progresión de la Enfermedad , Supervivencia sin Enfermedad , Doxorrubicina/administración & dosificación , Femenino , Humanos , Linfoma de Células B Grandes Difuso/tratamiento farmacológico , Linfoma de Células B Grandes Difuso/cirugía , Metotrexato/administración & dosificación , Persona de Mediana Edad , Invasividad Neoplásica , Prednisona/administración & dosificación , Pronóstico , Recurrencia , Estudios Retrospectivos , Rituximab , Vincristina/administración & dosificación , Adulto Joven
10.
Leuk Res ; 38(2): 188-93, 2014 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-24342807

RESUMEN

BACKGROUND: Cytogenetic assessments can improve conventional clinical risk assessment for ultra-high risk (UHR) multiple myeloma (MM) patients. OBJECTIVE: Cytogenetic and clinical risk factors were examined in UHR MM patients. METHODS: Consecutive MM patients (n = 168) were retrospectively screened for untreated, symptomatic MM between July 2008 and March 2011, including UHR (n = 35) and control (n = 60) patients with ≤ 12 or >12 month survival, respectively. Treatment outcomes; clinical, radiological, histological factors; and fluorescence in situ hybridization (FISH)-indicated cytogenetic abnormalities (CAs) were compared. RESULTS: Included UHR patients exhibited lower median overall survival (OS) (5 vs. >24 months); overall response rates (ORRs) (31.4% vs. 83.3%); complete response (CR), near CR (nCR), or very good partial response (VGPR) (8.6% vs. 51.7%) (all P<0.001); and partial response (PR) (22.9% vs. 31.7%, P = 0.358). UHR patients exhibited more renal failure (54.3% vs. 28.3%), hypercalcemia (11.4% vs. 0), elevated lactate dehydrogenase (LDH) (25.7% vs. 5%), secondary plasma cell leukemia (14.3% vs. 0), International Staging System (ISS) stage III (77.1% vs. 45%), and 1q21+ and 17p- (42.9% vs. 18.3%; 17.1% vs. 3.3%) (all P<0.05). ≥ 3 CAs indicated poor survival (36.7% vs. 16.1%, P = 0.035). Multivariate analysis showed ISS stage and LDH correlated with UHR (P = 0.05 and P =0.01, respectively), and 1q21+ and 17p- were increased but non-significantly correlated with UHR (P = 0.15 and P = 0.2, respectively). CONCLUSIONS: Combined clinical and cytogenetic assessments optimally indicate UHR MM patients' prognosis, allowing earlier risk-adapted interventions.


Asunto(s)
Mieloma Múltiple/mortalidad , Mieloma Múltiple/patología , Adulto , Anciano , Anciano de 80 o más Años , Causas de Muerte , Análisis Citogenético , Femenino , Humanos , Masculino , Persona de Mediana Edad , Mieloma Múltiple/terapia , Estudios Retrospectivos , Medición de Riesgo , Factores de Riesgo , Análisis de Supervivencia
11.
Zhongguo Shi Yan Xue Ye Xue Za Zhi ; 21(2): 403-9, 2013 Apr.
Artículo en Chino | MEDLINE | ID: mdl-23628042

RESUMEN

Disorders of iron utilization caused by abnormal elevation of hepcidin levels are the main mechanism of anemia of chronic disease. Hepcidin is mainly produced by the liver. Recently it has been found that monocytes are another source of hepcidin. The increased hepcidin in serum and urine of multiple myeloma patients may be one cause of anemia of chronic disease (ACD). However it is unclear whether the peripheral blood monocyte hepcidin is involved in the pathogenesis of anemia of chronic disease. This study was purposed to investigate the role of monocyte hepcidin in multiple myeloma patients with anemia of chronic disease. The clinical data and peripheral venous blood of multiple myeloma patients were collected.Serum concentration of IL-6 and TNF-α was detected by ELISA. Peripheral blood monocytes were isolated by CD14(+) magnetic beads. Hepcidin, IL-6 and TNF-α mRNA of monocytes were detected by real time quantitative PCR. The results showed that the expression level of monocyte hepcidin mRNA in myeloma patients was higher than that in normal controls. In untreated patients, the expression level of monocyte hepcidin mRNA was negatively correlated with hemoglobin, and positively correlated with serum ferritin and IL-6 levels, but unrelated with TNF-α levels.It is concluded that the increased monocyte hepcidin levels in multiple myeloma patients may play an etiologic role in ACD.


Asunto(s)
Anemia/etiología , Hepcidinas/sangre , Leucocitos Mononucleares/metabolismo , Mieloma Múltiple/sangre , Adulto , Anciano , Estudios de Casos y Controles , Enfermedad Crónica , Femenino , Ferritinas/sangre , Humanos , Interleucina-6/sangre , Masculino , Persona de Mediana Edad , Monocitos/metabolismo , Mieloma Múltiple/complicaciones , Factor de Necrosis Tumoral alfa/sangre
13.
Zhonghua Xue Ye Xue Za Zhi ; 33(6): 471-4, 2012 Jun.
Artículo en Chino | MEDLINE | ID: mdl-22967383

RESUMEN

OBJECTIVE: To further analyse the relationship between the new technology and clinical characteristics in paroxysmal nocturnal haemoglobinuria (PNH) patients, and summarize the data of PNH during the past 15 years in China. METHODS: 76 consecutive patients with PNH diagnosed in Peking Union Medical Colleague Hospital from 1997 - 2011 retrospectively. RESULTS: Most of the patients were diagnosed based on flow cytometric data. There were 46 male and 30 female patients. The median age at diagnosis was 40 (10 - 74). 46 (60.5%) patients presented with classical PNH, 16 (21.1%) pancytopenia, and 14 (18.4%) thrombosis. Anatomic locations of first thrombosis were intra abdominal in 7 patients, lower extremities in 3 patients, intracerebral in 2 patients, and pulmonary thrombosis in 2 patients. The size of PNH clone at first determination (shown by CD55 and CD59 negative percentage) was (61.23 ± 27.47)% and (60.24 ± 25.59)% on neutrophils; (34.24 ± 25.50)% and (32.22 ± 23.12)% on erythrocytes, respectively. The mean LDH level was (1199.2 ± 893.5) U/L. In our cohort, 13(17.0%) patients suffered from renal deficiency, 12 (15.8%) patients cholecystolithiasis, 10 (13.2%) patients hemorrhage and 9 (11.8%) patients infections. In a median of 7-year (range 0.5 - 20 years) follow-up (68 patients), 2 (2.9%) patients developed into myelodysplastic syndromes/ acute myeloid leukemia, 1(1.5%) patient ovary cancer, 11(14.5%) patients died. Patients with thrombosis had higher percentage of CD59 negative neutrophils \[(73.45 ± 22.32)%\] compared with those without thrombosis \[(58.3 ± 20.2)%\] (P < 0.05). CONCLUSIONS: The cohort had higher percentage of classical hemolysis, thrombosis and renal dysfunction compared with previous reports in China. Patients with thrombotic events had higher percentages of CD55 and CD59 negative neutrophils.


Asunto(s)
Hemoglobinuria Paroxística/sangre , Hemoglobinuria Paroxística/diagnóstico , Adolescente , Adulto , Anciano , Antígenos CD59 , Niño , Eritrocitos , Femenino , Humanos , Recuento de Leucocitos , Masculino , Persona de Mediana Edad , Neutrófilos , Estudios Retrospectivos , Adulto Joven
14.
Artículo en Chino | MEDLINE | ID: mdl-22702059

RESUMEN

OBJECTIVE: To analyze the changes of gene expression profiles during the process that human bone marrow mesenchymal stem cells (hBMSCs) are induced to differentiate into cardiomyogenic cells with 5-azacytidine (5-aza). METHODS: hBMSCs were isolated from marrow of obsolete ribs and induced with 5-aza. Then immunocytochemical staining was used to detect the expressions of alpha-actin, cardiac troponin T (cTnT), and connexin 43, and the percentage of cTnT positive cells was tested with flow cytometry. In the process of differentiation, variation of gene expression was screened with Genechips Operating System of human gene expression profiles. And the differentially expressed genes were functionally analyzed and hierarchical clustered. RESULTS: When BMSCs were induced in vitro with 5-aza, part of the cells turned into myogenic cells morphologically. Before induction, immunocytochemical staining for alpha-actin and cTnT showed slight positive and for connexin 43 showed negative. While after 3 weeks of induction, immunocytochemical staining for alpha-actin, cTnT, and connexin 43 showed all positive. With flow cytometry, the percentage of cTnT positive cells was 7.43% +/- 0.02% before induction, but it was 49.64% +/- 0.05% after induction. During differentiation, 1 814 differentially expressed genes were reported by gene chips. Of them, 647 genes were divided into 5 groups with hierarchical clustering. They had various biological functions, involving signal transduction, cell metabolism, proliferation, differentiation, development, and topogenesis. CONCLUSION: hBMSCs can differentiate into cardiomyogenic cells with the induction of 5-aza in vitro. Multiple genes related with signal transduction, transcription, and growth factors are involved during this process.


Asunto(s)
Azacitidina/farmacología , Células de la Médula Ósea/citología , Diferenciación Celular/efectos de los fármacos , Células Madre Mesenquimatosas/citología , Miocitos Cardíacos/citología , Transcriptoma , Actinas/genética , Células de la Médula Ósea/metabolismo , Células Cultivadas , Análisis por Conglomerados , Citometría de Flujo , Regulación de la Expresión Génica , Humanos , Células Madre Mesenquimatosas/metabolismo , Miocitos Cardíacos/metabolismo , Análisis de Secuencia por Matrices de Oligonucleótidos/métodos , Transducción de Señal , Troponina T/genética
15.
Zhongguo Shi Yan Xue Ye Xue Za Zhi ; 19(3): 738-43, 2011 Jun.
Artículo en Chino | MEDLINE | ID: mdl-21729562

RESUMEN

Erythropoietin (EPO) is the major means of treating anemia of chronic disease (ACD) through stimulating hematopoiesis, inhibiting hepcidin and decreasing proinflammatory factors. Recently, it has been found that monocytes are another source of hepcidin. EPO can reduce the hepcidin stimulated by IL-6 in monocytes, it is assumed that EPO can reduce hepcidin indirectly by reducing IL-6. However, the specific mechanism of EPO inhibiting the proinflammatory cytokines in monocytes is unclear now. This study was purposed to investigate the effect of EPO on monocyte proinflammatory factors and its molecular mechanism. IL-6 mRNA and TNF-α mRNA were detected by real time PCR, level of signaling molecule PARP-1 protein was detected by Western blot. THP-1 monocytes were stimulated by 1 µg/ml lipopolysaccharide (LPS) to observe the impact of EPO at different concentrations (0.5, 1, 2, 5, 10 U/ml) for different time (0, 3, 6, 12, 24 hours) on the expression of IL-6 mRNA, TNF-α mRNA and PARP-1 protein. 1 µg/ml or 5 µg/ml EPO receptor (EPOR) antibody and/or 3-aminobenzamide (3-AB, PARP-1 inhibitor) were added to observe the antagonistic effect on EPO and the impact on PARP-1. The results showed that LPS could stimulate the THP-1 cells. EPO could decrease the levels of IL-6 and TNF-α stimulated by LPS in a dose- and time-dependent manners. The most significant decrease in IL-6 mRNA expression was observed in 2 U/ml EPO for 6 hours. And down-regulation of TNF-α mRNA expression was pronounced at 10 U/ml EPO for 3 hours. IL-6 mRNA expression could be stimulated by LPS, PARP-1 protein was induced at the same time. EPO inhibited the expression of IL-6 mRNA, while PARP-1 protein also decreased. Down-regulation of IL-6 mRNA and PARP-1 protein level was pronounced at 2 U/ml EPO for 6 hours. 3AB is a direct inhibitor of PARP-1. Similar to 3AB, EPO receptor antibody could antagonize the decline of IL-6 induced by EPO. It is concluded that EPO can inhibit the expression of IL-6 and TNF-α in monocytes, and the inhibition of IL-6 expression may be associated with decrease of PARP level.


Asunto(s)
Anemia/metabolismo , Eritropoyetina/farmacología , Monocitos/efectos de los fármacos , Monocitos/metabolismo , Línea Celular , Humanos , Interleucina-6/metabolismo , Poli(ADP-Ribosa) Polimerasa-1 , Poli(ADP-Ribosa) Polimerasas/metabolismo , Factor de Necrosis Tumoral alfa/metabolismo
16.
Zhonghua Nei Ke Za Zhi ; 50(3): 205-8, 2011 Mar.
Artículo en Chino | MEDLINE | ID: mdl-21600082

RESUMEN

OBJECTIVE: To analyze the disease spectrum of patients admitted to the General Internal Medicine Unit at Peking Union Medical College Hospital, which is the first academic division of general internal medicine in the department of medicine within Chinese medical colleges and universities, and the value of general internal medicine unit in comprehensive hospitals. METHODS: A retrospective data review of patients admitted to the General Internal Medicine Unit from 2004 to 2008 was conducted from hospital information system and partially by chart review manually. Analysis of disease spectrum was performed thereafter. RESULTS: A total of 2593 patients were included in our study. It consisted of 1075 men and 1518 women, with an average age of 45.1 years old. Forty point three percent of these patients were from Beijing, the local city, and the remaining 59.7% were from outside of Beijing. Sixty-four point nine percent (1683/2593) of these patients did not have a clear diagnosis on admission, including 758 fever of unknown origin (FUO) cases and 925 non-FUO cases. The final diagnostic rate of the FUO cases was 89.2% [676/758, with the first three leading causes as diseases of the musculoskeletal system and connective tissue (29.8%), certain infectious and parasitic diseases (26.3%), and neoplasm (14.5%)]. The final diagnostic rate of the 928 non-FUO cases was 86.8% (803/925), with the first three leading causes as musculoskeletal system and connective tissue (24.9%), neoplasm (15.5%), and diseases of blood and blood-forming organs (11.4%). Despite most diagnoses fitting into the above categories, the array of diseases was broad with as many as 550 discharge diagnoses from 2004 to 2008. CONCLUSIONS: During 2004 - 2008, there was a high proportion of cases that presented to the General Internal Medicine Unit at Peking Union Medical College Hospital with an unclear diagnosis, and the spectrum of diseases diagnosed was very broad. This kind of patient admitting model might not only benefit patients with no clear admission diagnosis and patients with multidisciplinary medical problems for whom it is usually difficult to be admitted by a specialty unit, but would also benefit medical students and residents by providing a good clinical medicine teaching base. These features show the value of general internal unit in comprehensive hospitals.


Asunto(s)
Departamentos de Hospitales , Pacientes Internos/estadística & datos numéricos , Medicina Interna , Adulto , Femenino , Hospitales Generales , Humanos , Masculino , Persona de Mediana Edad
18.
Zhonghua Xue Ye Xue Za Zhi ; 32(4): 241-4, 2011 Apr.
Artículo en Chino | MEDLINE | ID: mdl-21569706

RESUMEN

OBJECTIVE: To evaluate the efficacy of porcine anti-human lymphocyte globulin (P-ALG) plus cyclosporine A (CsA) therapy for severe aplastic anemia (SAA). METHODS: Forty-eight SAA patients (31 males, 17 females) including 17 very severe aplastic anemias (vSAA) were treated with ALG plus CsA between 1999 to 2009 in our hospital and the outcomes were analyzed retrospectively for early mortality, response rate and quality, survival rate, toxicity and complications. RESULTS: The median age was 28 (13 - 64) years. The interval from diagnosis to treatment was 45 days. The median neutrophil count at diagnosis was 0.178 × 10(9)/L. Overall response was 83.3% (54.2% complete, 29.2% partial) with a median time of 90 (23 - 380) days. 10.4% died of infection within 30 days mainly of fungi infection. Only 1 patient relapsed 2 years after treatment. No clonal disease was found. The 1.5-year survival rate was 87.5%. vSAAs had less response, higher early mortality and less survival (64.7%, 29.4% and 51.8%, respectively) compared to that of SAA (93.5%, 0, 100%, respectively, P < 0.05). Grouped patients with different age, gender, intervals between diagnosis and treatment and pre-existing infections had similar response. The main side effects were fever and skin rash (52.1%), serum sickness (16.7%), impaired liver function (60.4%) and hemorrhage (2.1%). No treatment-related mortality was found. CONCLUSION: P-ALG plus CsA is an ideal and well tolerated treatment for SAA but not for vSAA.


Asunto(s)
Anemia Aplásica/tratamiento farmacológico , Suero Antilinfocítico/uso terapéutico , Ciclosporina/uso terapéutico , Adolescente , Adulto , Animales , Femenino , Humanos , Inmunosupresores/uso terapéutico , Linfocitos/inmunología , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Porcinos , Resultado del Tratamiento , Adulto Joven
19.
Zhongguo Shi Yan Xue Ye Xue Za Zhi ; 19(2): 390-4, 2011 Apr.
Artículo en Chino | MEDLINE | ID: mdl-21518494

RESUMEN

This study was purposed to investigate the effect of multiple myeloma patients' sera on hepcidin mRNA expression of Hep-3b hepatoma cell line and effect of human interleukin-6 (IL-6) antibody or recombinant human erythropoietin (rhEPO) on hepcidin mRNA expression. The clinical information and serum of multiple myeloma patients were collected. Their sera of a final concentration of 10% were added into Hep-3b cell medium. The mRNA from Hep-3b cells was extracted, and hepcidin mRNA expression was detected by semi-quantitative reverse transcription polymerase chain reaction (RT-PCR). A final concentration of 10 ng/ml human IL-6 antibody and 2 U/ml rhEPO were added into the medium respectively. The results showed that the sera of untreated multiple myeloma patients elevated hepcidin mRNA expression of Hep-3b cells, compared with healthy controls and iron deficiency anemia patients. This effect was fully neutralized by human IL-6 antibody or rhEPO. The hemoglobin (Hb) level was stable during the follow up of regularly treated multiple myeloma patients and the effect of MM patient serum on Hep-3b cell hepcidin mRNA expression was reduced. It is concluded that the hepcidin mRNA expression of Hep-3b cell can be increased by untreated multiple myeloma patient serum. This promotive effect can be antagonised by IL-6, which suggests that IL-6 may be possible to elevate expression level of hepcidin in Hep-3b cells and results in anemia of chronic disease (ACD). The above mentioned promotive effects also can be suppressed by rhEPO, which indicates that the rhEPO may possess curative effect for ACD disease. During short-term follow-up of treated patients with multiple myeloma the Hb level is stable, the influence of patients serum on hepcidin mRNA of Hep-3b cells decreases, which shows the stabilization of disease and amelioration of ACD patient status.


Asunto(s)
Anticuerpos Monoclonales/farmacología , Péptidos Catiónicos Antimicrobianos/genética , Eritropoyetina/farmacología , Mieloma Múltiple/genética , ARN Mensajero/genética , Adulto , Anciano , Línea Celular Tumoral , Eritropoyetina/sangre , Femenino , Hepcidinas , Humanos , Interleucina-6/inmunología , Masculino , Persona de Mediana Edad , Mieloma Múltiple/metabolismo
20.
Ann Hematol ; 90(7): 819-26, 2011 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-21221584

RESUMEN

POEMS syndrome is a rare plasma cell dyscrasia characterized by polyneuropathy, organomegaly, endocrinopathy, M protein, and skin changes. This study reviewed the clinical characteristics and long-term outcome of 99 consecutive Chinese patients with newly diagnosed POEMS syndrome in a single institute. The median age of 99 patients was 45 years, and the ratio of men/women was 1.4. The median time from onset of symptoms to diagnosis was 18 months. The typical five features of peripheral neuropathy, organomegaly, endocrinopathy, M protein, and skin change remained to be essential for patients with POEMS syndrome in China. The unusual features like pulmonary hypertension (36%) and renal impairment (37%) were not uncommon in China. Eighty-three percent patients were alive after follow-up time of 25 months, and 10% patients had survived more than 60 months. Melphalan-based therapy (OR, 0.076; 95% CI, 0.02-0.285) and normal renal function (OR, 0.246; 95% CI, 0.076-0.802) were independent prognostic factors for the survival of patients with POEMS syndrome. In conclusion, POEMS syndrome in Chinese patients was a multi-systemic disease with clinical features similar to non-Chinese ones. Active therapy can effectively improve the prognosis of patients with POEMS syndrome.


Asunto(s)
Síndrome POEMS/diagnóstico , Síndrome POEMS/patología , Adulto , Anciano , Antineoplásicos Alquilantes/uso terapéutico , Enfermedad de Castleman/patología , Enfermedad de Castleman/fisiopatología , China , Femenino , Humanos , Riñón/metabolismo , Masculino , Melfalán/uso terapéutico , Persona de Mediana Edad , Síndrome POEMS/tratamiento farmacológico , Síndrome POEMS/fisiopatología , Pronóstico , Estudios Retrospectivos , Tasa de Supervivencia , Resultado del Tratamiento
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