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1.
Hematology ; 28(1): 2241226, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37548329

RESUMEN

BACKGROUND: In China, conventional genetic testing methods can only detect common thalassemia variants. Accurate detection of rare thalassemia is crucial for clinical diagnosis, especially for children that need long-term blood transfusion. This study aims to explore the application value of third-generation sequencing (TGS) in the diagnosis of rare thalassemia in children with anemia. METHODS: We enrolled 20 children with anemia, excluding from iron deficiency anemia (IDA). TGS was employed to identify both known and novel thalassemia genotypes, while sanger sequencing was used to confirm the novel mutation detected. RESULTS: Among the 20 samples, we identified 5 cases of rare thalassemia. These included ß-4.9 (hg38,Chr11:5226187-5231089) at HBB gene, α-91(HBA2:c.*91delT), αCD30(HBA2:c.91-93delGAG), Chinese Gγ+(Aγδß)0(NG_000007.3: g .48795-127698 del 78904) and delta - 77(T > C)(HBD:c.-127T>C). Notably, the -SEA/α-91α genotype associated with severe non-deletional hemoglobin H disease (HbH disease) has not been previously reported. Patients with genotypes ß654/ß-4.9 and -SEA/α-91α necessitate long-term blood transfusions, and those with the -SEA/αCD30α, Chinese Gγ+(Aγδß)0 and delta thalassemia demonstrate mild anemia. CONCLUSIONS: TGS demonstrates promising potential as a diagnostic tool for suspected cases of rare thalassemia in children, especially those suspected to have transfusion-dependent thalassemia (TDT).


Asunto(s)
Anemia , Hemoglobinas , Secuenciación de Nucleótidos de Alto Rendimiento , Talasemia , Niño , Humanos , Talasemia alfa/diagnóstico , Talasemia alfa/genética , Anemia/etiología , Anemia/genética , Pueblo Asiatico , Talasemia beta/diagnóstico , Talasemia beta/genética , China , Genotipo , Hemoglobinas/genética , Mutación , Enfermedades Raras/diagnóstico , Enfermedades Raras/genética , Talasemia/diagnóstico , Talasemia/genética , Talasemia/terapia , Transfusión Sanguínea
2.
Ann Transl Med ; 10(22): 1214, 2022 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-36544673

RESUMEN

Background: With uncontrolled inflammatory progression, acute pancreatitis (AP) can progress to severe acute pancreatitis (SAP). Inflammation and parenchymal cell death are key pathologic responses of AP. Toll-like receptor 4 (TLR4) plays a pro-inflammatory role in AP. Myeloid differentiation primary response protein 88 (MyD88) is the most essential utilized adaptor of TLR4, but its role in AP remains unclear. We investigated the potential role of MyD88 in the pathogenesis of AP. Methods: An AP model was induced by administering either cerulein or L-arginine to wild-type or MyD88-deficient mice. Additionally, receptor-interacting protein kinase 1 (RIP1) inhibitor necrostatin-1 (Nec-1) was administered to the MyD88-/- mice. The severity of AP was determined by measuring serum amylase and lipase activities, quantifying pancreatic myeloperoxidase (MPO) activity, and histological examination. The effects of MyD88 deletion on cell death and the inflammatory response were determined by measuring apoptosis, necrosis, and inflammatory cytokines. Western blot was used to assess the necrotic mediators, RIP1 and RIP3. Results: The deletion of MyD88 resulted in more severe acute experimental pancreatitis as assessed by increased amylase and lipase activities, increased pancreatic MPO activity, a reduced anti-inflammatory response, reduced apoptosis, and increased necrosis. Additionally, Nec-1 treatment significantly reduced necrosis in the MyD88-/- mice. Conclusions: The deletion of MyD88 inhibited the TLR4/MyD88-dependent pathway mediated protective immune defense response and enhanced TLR4/MyD88-independent TRIF pathway-mediated pancreatic necrosis, which in turn aggravated the severity of AP. The critical role of MyD88 in immune defense response and cell death indicates that MyD88 represents a potential therapeutic target in the management of AP.

3.
Hemoglobin ; 46(3): 160-163, 2022 May.
Artículo en Inglés | MEDLINE | ID: mdl-35582759

RESUMEN

With the development of sequencing technology, more and more rare thalassemia types have been found. In this article, we found a novel Hb H disease combined with glucose-6-phosphate dehydrogenase (G6PD) deficiency through whole genome sequencing (WGS), which was verified by Sanger sequencing and polymerase chain reaction (PCR)-reverse dot-blot hybridization, respectively.


Asunto(s)
Deficiencia de Glucosafosfato Deshidrogenasa , Talasemia , Glucosafosfato Deshidrogenasa/genética , Deficiencia de Glucosafosfato Deshidrogenasa/diagnóstico , Deficiencia de Glucosafosfato Deshidrogenasa/genética , Humanos , Reacción en Cadena de la Polimerasa , Talasemia/genética , Secuenciación Completa del Genoma
4.
J Int Med Res ; 49(5): 3000605211014360, 2021 May.
Artículo en Inglés | MEDLINE | ID: mdl-34034549

RESUMEN

Pleomorphic rhabdomyosarcomas of the uterus (PRMSu) is a rare malignant tumor of the female genital tract. Accurate diagnosis and effective treatment of PRMSu are important. We report an 81-year-old woman who was diagnosed with PRMSu. She had an extremely unusual presentation of secondary dyspnea because of an extremely large uterus (26.0 cm). Pelvic magnetic resonance imaging showed rare severe enlargement and intrauterine filling with tumor tissue, and she was initially diagnosed with uterine leiomyosarcoma. The patient underwent hysterectomy, as well as bilateral salpingo-oophorectomy and omentectomy, and was finally confirmed as having PRMSu by histopathology combined with immunohistochemistry. We performed a systematic review of the literature between 1982 and 2020 and focused on different treatment strategies and prognosis of PRMSu. A retrospective review of 28 cases was conducted and survival analysis was estimated by using the Kaplan-Meier method. We found that the accuracy of diagnosis of PRMSu completely depends on histopathology and immunohistochemistry because of no special clinical symptoms, no sensitive tumor markers, and no special imaging findings. Although there is no standardized approach for treating this rare disease, the treatment strategy of a surgical operation combined with adjuvant chemotherapy appears to be the best choice.


Asunto(s)
Leiomiosarcoma , Rabdomiosarcoma , Neoplasias Uterinas , Anciano de 80 o más Años , Femenino , Humanos , Histerectomía , Leiomiosarcoma/diagnóstico por imagen , Leiomiosarcoma/cirugía , Estudios Retrospectivos , Rabdomiosarcoma/diagnóstico por imagen , Rabdomiosarcoma/cirugía , Neoplasias Uterinas/diagnóstico por imagen , Neoplasias Uterinas/cirugía
5.
Sci Rep ; 9(1): 6086, 2019 04 15.
Artículo en Inglés | MEDLINE | ID: mdl-30988369

RESUMEN

Aiming to investigate whether genetic risk factors (GRFs) for fracture and bone mineral density (BMD) identified from people of European descent can help improve the prediction of osteoporotic fracture (OF) risk and BMD in Chinese populations, we built assessment models for femoral neck (FN)-fracture prediction and BMD value prediction using 700 elderly Chinese Han subjects and 1,620 unrelated Chinese Han subjects, respectively. 17 fracture-associated genes and 82 FN-BMD associated genes identified in people of European descent were used to build a logistic regression model with clinical risk factors (CRFs) for FN-fracture prediction in Chinese. Meanwhile 107 BMD-associated genes from people of European descent were used to build a multiple linear regression model with CRFs for BMD prediction in Chinese. A Lasso algorithm was employed for informative SNP selection to construct the genetic risk score (GRS) with ten-fold cross-validation. The results showed that, adding fracture GRF and FN-BMD GRF to the model with CRFs, the area under the receiver operating characteristic curve (AUC) decrease from 0.653 to 0.587 and 0.588, respectively, for FN fracture prediction. 62.3% and 61.8% of the risk variation were explained by the Model with CRFs and fracture GRF and by the Model with CRFs and FN-BMD GRF, respectively, as compared to 65.5% in the Model with CRFs only. The net reclassification improvement (NRI) index in the reclassification analysis is 0.56% (P = 0.57) and 1.13% (P = 0.29), respectively. There is no significant difference either between the performance of the model with CRFs and that of the model with both CRFs and GRF for BMD prediction. We concluded that, in the current study, GRF of fracture identified in people of European descent does not contributes to improve the fracture prediction in Chinese; and GRF of BMD from people of European descent cannot help improve the accuracy of the fracture prediction in Chinese perhaps partially because GRF of BMD from people of European descent may not contribute to BMD prediction in Chinese. This study highlights the limited utility of the current genetics studies largely focused on people of European descent for disease or risk factor prediction in other ethnic groups, and calls for more and larger scale studies focused on other ethnic groups.


Asunto(s)
Densidad Ósea/genética , Fracturas del Cuello Femoral/etnología , Fracturas del Cuello Femoral/genética , Predisposición Genética a la Enfermedad/etnología , Fracturas Osteoporóticas/etnología , Fracturas Osteoporóticas/genética , Adulto , Anciano , Algoritmos , Pueblo Asiatico/genética , Femenino , Humanos , Modelos Lineales , Masculino , Persona de Mediana Edad , Factores de Riesgo , Población Blanca/genética , Adulto Joven
6.
J Matern Fetal Neonatal Med ; 32(1): 38-45, 2019 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-28882078

RESUMEN

OBJECTIVE: The objective of study is to report the feasibility of non-invasive prenatal screening (NIPS) combined with invasive detection by chromosomal analysis in identifying fetal duplication, providing clinical performance of NIPS on copy number variations (CNVs) detection. MATERIAL AND METHODS: NIPS was offered to a 35-year-old pregnant woman. Amniocentesis was performed to confirm the positive screening result. Fetal sample was detected by karyotyping, fluorescence in situ hybridization (FISH), and chromosomal microarray (CMA). Parental karyotyping was also conducted. RESULTS: NIPS result was positive for chromosome 16, indicating an extra copy of chromosome 16. FISH and chromosomal karyotyping revealed that the fetus had a marker chromosome derived from chromosome 16. CMA further demonstrated an approximately 19-Mb duplication in chromosome 16. The final fetal karyotype was 47,XY,+mar. ish der (16)(D16Z3+).arr 16p11.2q12.1 (30 624 186-49 696 337 × 3). Ultrasound scan and MRI showed some structure malformations. CONCLUSIONS: A protocol for CNVs detection by combining a series of genetic methods was presented in this study and a novel marker duplication 16p11.2q12.1 was reported. With the ability to identify subchromosomal deletions and duplications in fetus, NIPS could reduce the possibility of invasive diagnosis. The followed confirmation test for positive sample is necessary and ensures the accuracy of the diagnosis.


Asunto(s)
Duplicación Cromosómica , Cromosomas Humanos Par 16 , Técnicas Genéticas , Pruebas de Detección del Suero Materno , Adulto , Amniocentesis , Femenino , Humanos , Embarazo
7.
Nan Fang Yi Ke Da Xue Xue Bao ; 38(5): 591-595, 2018 May 20.
Artículo en Chino | MEDLINE | ID: mdl-29891457

RESUMEN

OBJECTIVE: To investigate the hypoglycemic characteristics of hospitalized elderly patients with type 2 diabetes mellitus (T2DM). METHODS: From January, 2014 to December, 2015, the data of 58 565 blood measurements using a standard blood glucose monitoring system (BGMS) were collected from 1187 cases of patients with type 2 diabetes during hospitalization in the Department of Endocrinology, Guangdong General Hospital (Guangzhou, China). Stratified analyses were conducted by dividing the patients into 3 age groups, namely <45 years group (128 cases), 45-64 years group (594 cases), and ≥65 years group (465 cases). The incidence and time distribution of hypoglycemia in these patients were compared among the 3 age groups. RESULTS: The risk of hypoglycemia increased with age. Compared with those below 45 years of age, the patients beyond or equal to 65 years had a significantly increased hypoglycemic density (0.95% vs 0.40%, P<0.001), a higher proportion of patients with hypoglycemia (28.17% vs 10.94%, P<0.001), and greater patient-days with hypoglycemia (4.48% vs 1.76%, P<0.001). In the elderly patients, hypoglycemia occurred most frequently before dawn, at which time the hypoglycemic density was 2.66% in patients ≥65 years of age, significantly higher than that in patients below 45 years (1.09%, P<0.05) and between 45 and 64 years (1.90%, P<0.05); the proportion of patients with hypoglycemia was also significantly higher in the elderly patients (14.57%) than in those below 45 years (3.77%, P<0.02) and between 45 and 64 years (9.42%, P<0.02). The proportion of patients with recurrent hypoglycemia (≥2 times) was significantly higher in patients ≥65 years (13.33%) than in younger patients (2.34% in <45 years group and 9.43% in 45-64 years group, P<0.05). CONCLUSION: The hypoglycemic risk in hospitalized elderly patients with T2DM is significantly higher than that in younger patients, especially before dawn and in terms of recurrent hypoglycemia. Clinicians should develop differential blood glucose monitoring and management strategies for these elderly patients to improve the clinical safety.


Asunto(s)
Glucemia/análisis , Diabetes Mellitus Tipo 2/sangre , Hipoglucemia/diagnóstico , Pacientes Internos , Adulto , Factores de Edad , Anciano , China/epidemiología , Humanos , Hipoglucemia/sangre , Hipoglucemia/epidemiología , Incidencia , Persona de Mediana Edad , Recurrencia , Factores de Tiempo
8.
Reprod Biol Endocrinol ; 16(1): 61, 2018 Jun 23.
Artículo en Inglés | MEDLINE | ID: mdl-29935533

RESUMEN

BACKGROUND: This population-based study was designed to investigate whether consumption of sugar-sweetened beverages (SSB) is associated with lower serum total testosterone concentration in men 20-39 years old. METHODS: All data for this study were retrieved from the National Health and Nutrition Examination Survey (NHANES) 2011-2012. The primary outcome was serum testosterone concentration, and main independent variable was SSB intake. Other variables included age, race/ethnicity, poverty/income ratio, body mass index (BMI), serum cotinine, heavy drinking, and physical activity. RESULTS: Among all subjects (N = 545), 486 (90.4%) had normal testosterone levels (defined as ≥231 ng/dL) and 59 (9.6%) had low testosterone levels (defined as < 231 ng/dL). Multivariate logistic regression revealed the odds of low testosterone was significantly greater with increasing SSB consumption (Q4 [≥442 kcal/day] vs. Q1 [≤137 kcal/day]), adjusted odds ratio [aOR] = 2.29, p = 0.041]. After adjusting for possible confounding variables, BMI was an independent risk factor for low testosterone level; subjects with BMI ≥ 25 kg/m2 had a higher risk of having a low testosterone level than those with BMI < 25 kg/m2 (aOR = 3.68, p = 0.044). CONCLUSION: SSB consumption is significantly associated with low serum testosterone in men 20-39 years old in the United States.


Asunto(s)
Bebidas , Sacarosa en la Dieta/administración & dosificación , Sacarosa en la Dieta/metabolismo , Edulcorantes/administración & dosificación , Testosterona/sangre , Adulto , Bebidas/efectos adversos , Biomarcadores/sangre , Sacarosa en la Dieta/efectos adversos , Humanos , Masculino , Encuestas Nutricionales/tendencias , Azúcares/administración & dosificación , Azúcares/efectos adversos , Edulcorantes/efectos adversos , Estados Unidos/epidemiología , Adulto Joven
9.
Zhongguo Zhong Yao Za Zhi ; 43(2): 271-287, 2018 Jan.
Artículo en Chino | MEDLINE | ID: mdl-29552845

RESUMEN

The increasing demand of Chinese materia medica could not be supplied by wild resource, and the cultivated medicinal materials become popular, which led to decreased quality of many medicinal materials due to the difference of the circumstance between the wild and the cultivated. How to improve quality becomes key points of Chinese medicine resource. The leaves of Scutellaria baicalensis were sprayed with H2O2, the activities of superoxide dismutase (SOD) and catalase (CAT) changed little, but there had been a marked decrease of peroxidase (POD) and ascorbic oxidase (APX), which showed that the antioxidase system declined. Meanwhile, H2O2, as enhanced the expression of phenylalnine ammonialyase (PAL) and ß-glucuronidase (GUS) as well as activity of PAL, promoted the biosynthesis and biotransformation of flavonoids. At the day 2 after treated, H2O2 of 0.004 µmol·L⁻¹ the contents of the baicalin and the wogonoside decreased slightly, but the contents of the baicalein and the wogonin increased significantly, the baicalein from 0.094% to 0.324%, the wogonin from 0.060% to 0.110%, i. e. increased 246% and 83.3%, respectively.


Asunto(s)
Medicamentos Herbarios Chinos/química , Flavanonas/análisis , Flavonoides/análisis , Glucósidos/análisis , Peróxido de Hidrógeno , Scutellaria baicalensis/metabolismo , Metabolismo Secundario , Ascorbato Oxidasa/metabolismo , Catalasa/metabolismo , Glucuronidasa/metabolismo , Peroxidasa/metabolismo , Fenilanina Amoníaco-Liasa/metabolismo , Superóxido Dismutasa/metabolismo
10.
Mol Cytogenet ; 11: 12, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-29422950

RESUMEN

BACKGROUND: Chromosome translocations are rare but frequently associated with infertility. The objective of this study is to investigate the feasibility of using chromosomal microarray analysis (CMA) on products of conception (POC) samples as an indicator of parental balanced translocation. From January 2011 to December 2016, CMA using Affymetrix Cytoscan™750K array was performed on 1294 POC samples in our hospital. Karyotyping and fluorescence in situ hybridization (FISH) using parental blood samples were performed to validate the origin of subchromosomal copy number variations (CNVs). RESULTS: In the 1294 cases of POCs, we detected CNVs of terminal duplication and deletion that imply unbalanced translocation derivatives in 16 cases, and accurate diagnosis with the parental study was made in all the cases by karyotyping and/or FISH. In 10/16 (62.5%) of these cases, CNVs were inherited from one carrier parent of balanced translocation (Cases 1 to 10), while 6/16 (37.5%) cases occurred de novo (Cases 11 to 16). CONCLUSION: This study clearly illustrated the importance of the utilization of CMA on POC, followed by parental karyotyping and FISH to better characterize CNVs. This approach is especially useful for couples in whom one partner carries a cryptic/submicroscopic balanced translocation but has an apparently normal karyotype.

11.
Zhongguo Dang Dai Er Ke Za Zhi ; 19(12): 1257-1262, 2017 Dec.
Artículo en Chino | MEDLINE | ID: mdl-29237526

RESUMEN

OBJECTIVE: To study the reference ranges of six sex hormones, i.e., luteinizing hormone, follicle-stimulating hormone, progesterone, prolactin, estradiol, and testosterone, for healthy children aged 0-18 years in Shenzhen, China. METHODS: Stratified cluster sampling was performed to select 2 178 healthy children aged 0-18 years in the districts of Futian, Luohu, Nanshan, Bao'an, and Longgang in Shenzhen between September 2015 and September 2016. There were 1 219 boys and 959 girls, including 81 neonates, 335 infants, 346 young children, 469 preschool children, 419 school-aged children, and 528 adolescents. The American Beckman DXI800 chemiluminescence meter was used to measure the levels of luteinizing hormone, follicle-stimulating hormone, progesterone, prolactin, estradiol, and testosterone. RESULTS: There were significant differences in the levels of luteinizing hormone, follicle-stimulating hormone, progesterone, prolactin, estradiol, and testosterone between different age groups (P<0.05). There were also significant differences in the levels of these sex hormones between boys and girls in the same age group (P<0.05). The reference ranges of six sex hormones were established for healthy children aged 0-18 years in Shenzhen based on the levels of these hormones in different age groups. CONCLUSIONS: There are significant differences in sex hormones between different age groups or sex groups. The reference ranges of six sex hormones established for different sexes or ages have great significance in the diagnosis and treatment of endocrine diseases in children.


Asunto(s)
Hormonas Esteroides Gonadales/sangre , Adolescente , Factores de Edad , Niño , Preescolar , Estradiol/sangre , Femenino , Hormona Folículo Estimulante/sangre , Humanos , Lactante , Recién Nacido , Mediciones Luminiscentes , Hormona Luteinizante/sangre , Masculino , Progesterona/sangre , Valores de Referencia , Testosterona/sangre
12.
Ann Med ; 49(1): 83-92, 2017 02.
Artículo en Inglés | MEDLINE | ID: mdl-27764973

RESUMEN

BACKGROUND: The aim of this study was to explore factors affecting cardiorespiratory fitness in males and females with different body mass index (BMI). METHODS: The National Health and Nutrition Examination Survey 1999-2004 data were used for this retrospective study. Estimated maximal oxygen uptake (VO2max) is surrogate for cardiorespiratory fitness (CRF). Univariate and multivariate linear regression analyses were performed to explore whether study variables were associated with estimated VO2max stratified by gender and BMI categories. RESULTS: A total of 3292 subjects 20-49 years of age were included in the analysis. CRF significantly decreased as BMI increased in both females and males. Ethnic difference was found in normal BMI in both genders and obese females; homocysteine was significantly negatively associated with estimated VO2max, as was total cholesterol. Obese male subjects with diabetes had a lower estimated VO2max than those without diabetes, and C-reactive protein (CRP) level and vitamin B12 level were significantly negatively associated with CRF. Female subjects with diabetes had higher estimated VO2max than those without diabetes. Folate was significantly positively correlated with estimated VO2max, whereas CRP was negatively correlated in obese female. CONCLUSIONS: There are different predictors of CRF in males and females, and in individuals with different BMI. Key messages Different BMI classes are associated with different predictors of cardiorespiratory fitness. Indicators of cardiorespiratory fitness differ between sexes.


Asunto(s)
Índice de Masa Corporal , Capacidad Cardiovascular/fisiología , Encuestas Nutricionales/métodos , Oxígeno/metabolismo , Aptitud Física/fisiología , Adulto , Proteína C-Reactiva/metabolismo , Femenino , Ácido Fólico , Humanos , Masculino , Persona de Mediana Edad , Obesidad/metabolismo , Estudios Retrospectivos , Vitamina B 12
13.
Eur J Intern Med ; 39: 39-50, 2017 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-27914881

RESUMEN

BACKGROUND: The study assessed the effect of continuous positive airway pressure (CPAP) therapy on the risk of developing type 2 diabetes by evaluating change in the homeostasis model assessment of insulin resistance (HOMA-IR) fasting blood glucose (FBG) and fasting insulin following CPAP treatment in non-diabetic patients and pre-diabetic with obstructive sleep apnea (OSA). METHODS: Medline, PubMed, Cochrane, and EMBASE databases were searched until August 24, 2015. The analysis included randomized controlled trials (RCTs), two arm prospective studies, cohort studies, and retrospective studies. The primary outcome measure was change of HOMA-IR in pre-diabetic patients receiving CPAP treatment. RESULTS: Twenty-three studies were included with 965 patients who had OSA. Nineteen studies were prospective studies and four were RCTs. CPAP therapy resulted in a significant reduction in the pooled standard difference in means of HOMA-IR (-0.442, P=0.001) from baseline levels compared with the control group. Change in FBG and fasting insulin from baseline levels was similar for the CPAP and control groups. For RCT studies (n=4), there was no difference in change in HOMA-IR or FBG levels from baseline between CPAP and control groups. The combined effect of RCTs showed that CPAP was associated with a significant reduction in change from baseline in fasting insulin than the control group (standardized diff. in means between groups=-0.479, P value=0.003). CONCLUSION: These findings support the use of CPAP in non-diabetic and pre-diabetic patients with OSA to reduce change of HOMA-IR and possibly reduce the risk of developing type 2 diabetes in this patient population.


Asunto(s)
Presión de las Vías Aéreas Positiva Contínua/métodos , Diabetes Mellitus Tipo 2/epidemiología , Estado Prediabético/epidemiología , Apnea Obstructiva del Sueño/complicaciones , Apnea Obstructiva del Sueño/terapia , Glucemia , Humanos , Insulina/sangre , Resistencia a la Insulina , Ensayos Clínicos Controlados Aleatorios como Asunto
14.
Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi ; 28(9): 926-9, 2012 Sep.
Artículo en Chino | MEDLINE | ID: mdl-22980654

RESUMEN

AIM: To study the mechanism underlying the IL-12-induced cytotoxic function of NK cells to Jurkat cells. METHODS: NK cells from peripheral blood mononuclear cells (PBMCs) were purified by magnetic sorting and stimulated with or without IL-12. The expression of genes on IL-12-treated and non-IL-12-treated NK cells was analyzed by gene chips and the expression of cytolytic molecules was evaluated by flow cytometry. RESULTS: Seventeen genes were up- (5/17) or down-regulated (12/17) on IL-12-treated NK cells compared with non-IL-12-treated NK cells (fold change≥10). IL-12-induced expression of TRAIL on NK cells mediated the cytotoxicity to Jurkat cells. The expression of TRAIL on subsets of CD56(+);CD16(+); and CD56(-);CD16(+); NK cells significantly increased after the stimulation with IL-12 and Jurkat cells expressed high level of TRAIL receptor 2 (TRAIL-R2). Importantly, the neutralizing mAbs against TRAIL (RIK-2) significantly inhibited the cytotoxicity of NK cells induced by IL-12. CONCLUSION: The expression of TRAIL on human NK cells induced by IL-12 was one of the major mechanisms of cytotoxicity to Jurkat cells.


Asunto(s)
Citotoxicidad Inmunológica , Interleucina-12/farmacología , Células Asesinas Naturales/inmunología , Ligando Inductor de Apoptosis Relacionado con TNF/fisiología , Citometría de Flujo , Regulación de la Expresión Génica/efectos de los fármacos , Humanos , Células Jurkat , Células Asesinas Naturales/efectos de los fármacos , Ligando Inductor de Apoptosis Relacionado con TNF/genética
15.
Nan Fang Yi Ke Da Xue Xue Bao ; 31(12): 2031-4, 2011 Dec.
Artículo en Chino | MEDLINE | ID: mdl-22200706

RESUMEN

OBJECTIVE: To investigate the secretion patterns of glucose-dependent insulinotropic polypeptide (GIP) after different dietary loads in subjects with normal glucose tolerance (NGT) and their relation to insulin secretion and plasma glucose levels. METHODS: Fourteen subjects with normal glucose tolerance underwent 75 g glucose tolerance test(OGTT) followed by mixed meal tolerance test(MMT) one week later. Blood glucose, insulin, and GIP were measured in the fasting state and at 0, 15, 30, 60, 90 and 120 min after glucose load or mixed meal load. RESULTS: The first peak value of GIP after glucose load occurred at 15 min (45.09∓4.67 pmol/L). After a brief decline, GIP continued to increase till reaching 59.66∓11.73 pmol/L at 120 min after the load. After the mixed meal load, GIP secretion presented with two peaks: the first peak appeared at 15 min (71.69∓14.19 pmol/L) with a level significantly higher than that at 15 min following glucose load (P<0.05), and the second occurred at 90 min (55.35∓13.19 pmol/L). The area under curve of GIP showed no significant difference between the two loads (P>0.05). Compared with glucose load, mixed meal load resulted in an increase of the first GIP peak and an earlier insulin peak (30 min vs 60 min), but a significant decrease of blood glucose at 15 min (P<0.05). CONCLUSION: Compared with glucose load, mixed meal (containing fat) can strongly stimulate GIP release and cause earlier occurrence of the insulin peak, which might be an important reason for the lower blood glucose after mixed meal.


Asunto(s)
Glucemia/metabolismo , Dieta , Polipéptido Inhibidor Gástrico/metabolismo , Insulina/metabolismo , Adulto , China/etnología , Ingestión de Energía , Femenino , Prueba de Tolerancia a la Glucosa , Humanos , Secreción de Insulina , Masculino , Persona de Mediana Edad , Adulto Joven
16.
Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi ; 27(5): 491-3, 497, 2011 May.
Artículo en Chino | MEDLINE | ID: mdl-21557902

RESUMEN

AIM: To evaluate cytokine production and subsets in PBMCs from PPD+ normal donors after stimulation with BCG. METHODS: PBMCs were isolated from PPD+ normal individuals, and cytokine production and BCG-specific T cell subsets were assessed by eight-color flow cytometry. RESULTS: Following stimulation with BCG, CD4+ but not CD8+ T cells expressed IFN-γ, IL-2 and TNF-α. Phenotypic analysis indicated that cytokine-producing cells were CD4+CD45RO+CD62L-CD27- and CD4+CD45RO+CD62L-CD27+. CONCLUSION: BCG predominantly induced CD4+ T cells to produce cytokines following stimulation with BCG. Further analysis indicated that these cells are CD4+CD45RO+CD62L- effector memory cells, suggesting that these cells probably played essential role in preventing TB infection.


Asunto(s)
Linfocitos T CD4-Positivos/inmunología , Leucocitos Mononucleares/inmunología , Mycobacterium bovis/inmunología , Citocinas/biosíntesis , Citocinas/inmunología , Citometría de Flujo/métodos , Humanos
17.
Ophthalmologica ; 222(3): 149-56, 2008.
Artículo en Inglés | MEDLINE | ID: mdl-18497522

RESUMEN

PURPOSE: To review the clinical features of acute zonal occult outer retinopathy (AZOOR) in Chinese patients. METHODS: All patients with AZOOR during 2002-2004 in our hospitals were reviewed retrospectively. RESULTS: Seven consecutive Chinese patients with AZOOR were recruited and followed up for 4-18 months. Their age ranged from 26 to 47 years and all were affected bilaterally. They were from the cities near the Pacific Ocean and were used to eating seafood. The common complaints were slightly reduced visual acuity and photopsia. At least one eye of each patient had a visual field defect or decreased local area sensitivity and one patient had bilateral blind spot enlargement. Ten in 14 eyes showed increased numbers of vitreous cells and 4 eyes had anterior chamber inflammatory cells and a keratic precipitate. In their initial examination, minimal or no fundus changes were found, only yellow-white dots or gray dots presented on the deep retina or outer retinal layer. Fundus fluorescent angiography showed large-area depigmentation and hyperfluorescein spots corresponding to fundus findings. Electroretinogram (ERG) or multifocal ERG was abnormal in all eyes with no changes in their follow-up examination. Not all of the initial diagnoses of these patients were consistent with the final ones. CONCLUSIONS: AZOOR is not a common disease in China, but easy to misdiagnose. Female predilection, photopsia, visual field defect, ERG abnormality and minimal ophthalmoscopic changes are the common characteristics of AZOOR in Chinese patients. Living habits may play a role in the development of AZOOR.


Asunto(s)
Retina/fisiopatología , Enfermedades de la Retina/diagnóstico , Enfermedad Aguda , Adulto , China/epidemiología , Diagnóstico Diferencial , Electrorretinografía , Femenino , Angiografía con Fluoresceína , Estudios de Seguimiento , Fondo de Ojo , Humanos , Masculino , Persona de Mediana Edad , Morbilidad , Retina/patología , Enfermedades de la Retina/epidemiología , Enfermedades de la Retina/fisiopatología , Estudios Retrospectivos , Síndrome , Factores de Tiempo , Agudeza Visual , Campos Visuales
18.
Graefes Arch Clin Exp Ophthalmol ; 245(11): 1653-8, 2007 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-17562063

RESUMEN

BACKGROUND: Capsule defects are common during or after intraocular surgery of various kinds. The purpose of this work is to establish a classification system of lens capsule defects to provide uniform description of these defects for ophthalmic research and IOL implantation. METHODS: A retrospective study of 128 patients (156 eyes) with lens capsule injury after ocular trauma and intraocular surgery was performed. The patients were divided into two groups. Capsule defects were defined and classified according to the location, size, shape and tension of the capsule and its effect on posterior chamber IOL implantation. RESULTS: Lens capsule defects were classified into four types: Type I - complete capsule; Type II - incomplete capsule, but has enough area and tension to support two IOL haptics; Type III - incomplete capsule, is able to support only one IOL haptic and the other haptic needs a suture; Type IV - no capsule, both IOL haptics need suture fixation. Type I and Type II were each divided into three subtypes. Type III was divided into two subtypes. The shape of the capsule defects included fissure-like, triangle, round, irregular and fan-like. All eyes with capsule defects can be sorted into one of these types, and it is easy to guide IOL implantation according to the classification. Type II was the most common among the two groups in this study. CONCLUSION: The classification of lens capsule defects is feasible and favorable for uniform clinical description, clinical research and IOL implantation.


Asunto(s)
Cápsula del Cristalino/patología , Enfermedades del Cristalino/clasificación , Adolescente , Adulto , Anciano , Niño , Preescolar , Femenino , Humanos , Lactante , Presión Intraocular/fisiología , Implantación de Lentes Intraoculares , Lentes Intraoculares , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Agudeza Visual/fisiología
19.
Clin Exp Ophthalmol ; 35(4): 387-9, 2007.
Artículo en Inglés | MEDLINE | ID: mdl-17539799

RESUMEN

A 36-year-old man with a history of consanguineous marriage between his parents presented with bilateral membranous cataract that was complicated by bilateral rhegmatogenous retinal detachment (RRD). Biomicroscopy revealed an absence of the crystalline lens bilaterally, a single piece of integrated fibrotic membrane in the right eye, and a membrane with a central cleft at the level of the ciliary process in the left eye. A small amount of residual cortex was revealed in the peripheral part of the membranes bilaterally when the pupils were dilated. Funduscopic examination showed that the vitreous liquefied and retina detached bilaterally. The successful retinal reattachment by vitrectomy and the finding of a retinal tear proved that the RD was rhegmatogenous. This case investigates bilateral membranous cataract with bilateral RRD as a new syndrome, or whether RRD may be a new complication of membrane cataract.


Asunto(s)
Afaquia/complicaciones , Catarata/congénito , Cristalino/anomalías , Desprendimiento de Retina/complicaciones , Adulto , Consanguinidad , Fibrosis , Humanos , Cápsula del Cristalino/patología , Masculino , Membranas/patología , Nistagmo Patológico/complicaciones , Síndrome
20.
Zhongguo Zhen Jiu ; 26(1): 8-10, 2006 Jan.
Artículo en Chino | MEDLINE | ID: mdl-16491748

RESUMEN

OBJECTIVE: To observe the therapeutic effect of acupuncture at five mental points and moving cupping on the Hechelu of the back on fibromyalgia syndrome (FS). METHODS: Sixty-six cases who conformed to the criteria were randomly divided into the treatment group treated with acupuncture at five mental points, moving cupping on the Hechelu of the back and amitriptyline, and the control group treated with amitriptyline. Clinical therapeutic effects were assessed with McGill Pain Questionnaire (MPQ) and HAMD depression scale. RESULTS: The therapeutic effect of the treatment group was better than that of the control group with a significant difference between the two groups (P < 0.01). CONCLUSION: Combination of acupuncture with cupping therapy is an effective therapy for fibromyalgia syndrome.


Asunto(s)
Puntos de Acupuntura , Fibromialgia , Terapia por Acupuntura , Investigación Biomédica , Humanos , Dimensión del Dolor
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