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1.
Chinese Journal of Reparative and Reconstructive Surgery ; (12): 589-595, 2023.
Artículo en Chino | WPRIM | ID: wpr-981637

RESUMEN

OBJECTIVE@#To investigate the feasibility of predicting proximal junctional kyphosis (PJK) in adults after spinal deformity surgery based on back-forward Bending CT localization images and related predictive indicators.@*METHODS@#A retrospective analysis was performed for 31 adult patients with spinal deformity who underwent posterior osteotomy and long-segment fusion fixation between March 2017 and March 2020. There were 5 males and 26 females with an average age of 62.5 years (range, 30-77 years). The upper instrumented vertebrae (UIV) located at T 5 in 1 case, T 6 in 1 case, T 9 in 13 cases, T 10 in 12 cases, and T 11 in 4 cases. The lowest instrumented vertebrae (LIV) located at L 1 in 3 cases, L 2 in 3 cases, L 3 in 10 cases, L 4 in 7 cases, L 5 in 5 cases, and S 1 in 3 cases. Based on the full-length lateral X-ray film of the spine in the standing position before and after operation and back-forward Bending CT localization images before operation, the sagittal sequence of the spine was obtained, and the relevant indexes were measured, including thoracic kyphosis (TK), lumbar lordosis (LL), local kyphosis Cobb angle (LKCA) [the difference between the different positions before operation (recovery value) was calculated], kyphosis flexibility, hyperextension sagittal vertical axis (hSVA), T 2-L 5 hyperextension C 7-vertebral sagittal offset (hC 7-VSO), and pre- and post-operative proximal junctional angle (PJA). At last follow-up, the patients were divided into PJK and non-PJK groups based on PJA to determine whether they had PJK. The gender, age, body mass index (BMI), number of fusion segments, number of cases with coronal plane deformity, bone mineral density (T value), UIV position, LIV position, operation time, intraoperative blood loss, osteotomy grading, and related imaging indicators were compared between the two groups. The hC 7-VSO of the vertebral body with significant differences between groups was taken, and the receiver operating characteristic curve (ROC) was used to evaluate its accuracy in predicting the occurrence of PJK.@*RESULTS@#All 31 patients were followed up 13-52 months, with an average of 30.0 months. The patient's PJA was 1.4°-29.0° at last follow-up, with an average of 10.4°; PJK occurred in 8 cases (25.8%). There was no significant difference in gender, age, BMI, number of fusion segments, number of cases with coronal plane deformity, bone mineral density (T value), UIV position, LIV position, operation time, intraoperative blood loss, and osteotomy grading between the two groups ( P>0.05). Imaging measurements showed that the LL recovery value and T 8-L 3 vertebral hC 7-VSO in the PJK group were significantly higher than those in the non-PJK group ( P>0.05). There was no significant difference in hyperextension TK, hyperextension LL, hyperextension LKCA, TK recovery value, LL recovery value, kyphosis flexibility, hSVA, and T 2-T 7, L 4, L 5 vertebral hC 7-VSO ( P>0.05). T 8-L 3 vertebral hC 7-VSO was analyzed for ROC curve, and combined with the area under curve and the comprehensive evaluation of sensitivity and specificity, the best predictive index was hC 7-L 2, the cut-off value was 2.54 cm, the sensitivity was 100%, and the specificity was 60.9%.@*CONCLUSION@#Preoperative back-forward Bending CT localization image can be used to predict the occurrence of PJK after posterior osteotomy and long-segment fusion fixation in adult spinal deformity. If the patient's T 8-L 2 vertebral hC 7-VSO is too large, it indicates a higher risk of postoperative PJK. The best predictive index is hC 7-L 2, and the cut-off value is 2.54 cm.


Asunto(s)
Masculino , Femenino , Humanos , Adulto , Persona de Mediana Edad , Estudios Retrospectivos , Pérdida de Sangre Quirúrgica , Vértebras Torácicas/cirugía , Cifosis/cirugía , Lordosis/cirugía , Fusión Vertebral/métodos , Tomografía Computarizada por Rayos X , Complicaciones Posoperatorias/diagnóstico por imagen , Vértebras Lumbares/cirugía
2.
Chinese Journal of Blood Transfusion ; (12): 392-395, 2021.
Artículo en Chino | WPRIM | ID: wpr-1004531

RESUMEN

【Objective】 To study the clinical characteristics and treatment of patients with acute hemolytic anemia crisis induced by levofloxacin. 【Methods】 The levofloxacin antibody was detected by the microcolumn gel method and scored by the Naranjo Adverse Drug Reaction Probability Scale(APS). Patients suffered from acute hemolysis anemia induced by levofloxacin was rescued by whole blood exchange(WBE) and therapeutic plasma exchange(TPE). 【Results】 The patient was diagnosed as acute hemolysis induced by levofloxacin as levofloxacin antibody was yielded, and 7 points scored by the Naranjo APS. After WBE and TPE treatment, the patient′s clinical symptoms and signs improved rapidly. Supplemented with immunoglobulin and hormone therapy, the patient was discharged on d 10 after treatment. 【Conclusion】 Levofloxacin can induce acute hemolytic anemia crisis, and WBE and TPR are effective rescue methods.

3.
Chinese Journal of Primary Medicine and Pharmacy ; (12): 2873-2876, 2020.
Artículo en Chino | WPRIM | ID: wpr-866704

RESUMEN

Objective:To investigate the effect of transcranial clipping in the treatment of intracranial aneurysms and its influence on hemodynamics, neuron specific enolase(NSE) and S100B expression.Methods:A retrospective analysis was made in 47 patients with intracranial aneurysms who admitted to Taizhou Hospital of Zhejiang Province from January 2017 to June 2019, all patients were treated by transcranial clipping.The hemodynamics, NSE and S100B levels were compared before operation and 1 week after operation.All patients were followed up for 6 months to evaluate the prognosis.Results:All patients completed the operation, the operation time was (2.79±0.43)h, the intraoperative bleeding volume was (243.51±28.73)mL, the incidence of postoperative complications was 6.38%(3/47), and the average hospitalization time was (16.74±1.86)d.One week after operation, the cerebral blood volume [(27.98±3.24)mL/100g] and cerebral blood flow [(2.08±0.34)mL·100g -1·min -1] were higher than those before operation [(23.41±2.36)mL/100g and (1.56±0.27)mL·100g -1·min -1] ( t=7.816, 8.211, all P<0.05). The serum NSE[(15.28±2.18)μg/L] and S100B[(0.83±0.16)μg/L] were lower than those before operation [(26.39±4.25)μg/L and (1.59±0.27)μg/L]( t=15.946, 16.601, all P<0.05). After follow-up for 6 months, 38 cases(80.85%) had a good prognosis. Conclusion:Transcranial clipping is effective in the treatment of intracranial aneurysms, and can improve hemodynamics, reduce the expression of NSE and S100B in serum, and reduce complications.

4.
Chinese Journal of Primary Medicine and Pharmacy ; (12): 2377-2380, 2019.
Artículo en Chino | WPRIM | ID: wpr-803049

RESUMEN

Objective@#To study the clinical efficacy of microsurgical clipping treatment for intracranial aneurysm rupture and optimal timing.@*Methods@#From January 2016 to December 2017, 80 patients with intracranial aneurysm rupture in Taizhou Enze Medical Center(Group) Hospital were randomly divided into the control group (24-72h after rupture) and the observation group (within 24h after rupture) according to the digital table, with 40 patients in each group.The pre- and intra-surgical re-rupture and surgical clipping, post-surgical complications, and clinical efficacy of 6-month follow-up in the two groups were observed and compared.@*Results@#Compared with the control group, the incidence rate of pre-surgical re-rupture was significantly reduced in the observation group (0.0% vs.10.0%, χ2=4.21, P<0.05). Compared with the control group, the incidence rate of post-surgical complications was obviously reduced in the observation group (20.0% vs.42.5%, χ2=4.71, P<0.05). Compared with the control group, the excellent rate of treatment was significantly improved in the observation group (87.5% vs.65.0%, χ2=5.59, P<0.05).@*Conclusion@#The microsurgical clipping treatment can improve the clinical efficacy of intracranial aneurysm rupture and sooner surgery with better prognosis.

5.
Chinese Journal of Primary Medicine and Pharmacy ; (12): 2377-2380, 2019.
Artículo en Chino | WPRIM | ID: wpr-753799

RESUMEN

To study the clinical efficacy of microsurgical clipping treatment for intracranial aneurysm rupture and optimal timing.Methods From January 2016 to December 2017,80 patients with intracranial aneurysm rupture in Taizhou Enze Medical Center ( Group) Hospital were randomly divided into the control group (24-72h after rupture) and the observation group (within 24h after rupture) according to the digital table,with 40 patients in each group.The pre-and intra-surgical re-rupture and surgical clipping ,post-surgical complications, and clinical efficacy of 6-month follow-up in the two groups were observed and compared.Results Compared with the control group,the incidence rate of pre -surgical re-rupture was significantly reduced in the observation group (0.0%vs.10.0%,χ2 =4.21,P<0.05).Compared with the control group ,the incidence rate of post -surgical complications was obviously reduced in the observation group (20.0%vs.42.5%,χ2 =4.71,P<0.05).Compared with the control group ,the excellent rate of treatment was significantly improved in the observation group (87.5%vs. 65.0%,χ2 =5.59,P<0.05).Conclusion The microsurgical clipping treatment can improve the clinical efficacy of intracranial aneurysm rupture and sooner surgery with better prognosis.

6.
Chinese Journal of Neonatology ; (6): 205-209, 2018.
Artículo en Chino | WPRIM | ID: wpr-699293

RESUMEN

Objective To improve the understanding of clinical phenotype and genotype of multiple acyl-CoA dehydrogenase deficiency (MADD) in neonates.Method The clinical data of a neonates with the diagnosis of MADD and treated in the Neonatal Department of Children's Hospital of Capital Institute of Pediatrics in December 2016 were analyzed.The literature collected from Wanfang database,CNKI and PubMed database from 1976 January to 2017 June was retrieved.Using "glutaric acidemia type Ⅱ ","multiple acyl CoA dehydrogenase deficiency","infant" and "neonate" as the key words.The phenotype and genotype characteristics were summarized.Result This boy was a full-term low birth weight infant with abnormal family history.He was admitted to hospital with recurrent episodes of poor response,respiratory distress and hyperlactacidemia.B-mode ultrasound abdominal examination suggested polycystic kidney disease.Laboratory tests revealed non-kenotic hypoglycemia,refractory metabolic acidosis,elevated lactate and muscle enzymes,hyperammonemia,abnormal coagulation function test.Mass spectrometry analysis showed that multiple acyl-carnitine increased.Urine gas chromatography-mass spectrometry showed significantly increased levels of lactic,glutaric,2-hydroxypentanedioic,dicarboxylic,and 4-hydroxybenzene lactic acids.The infant was given high doses of vitamin B2,L-carnitine,and other symptomatic treatments,but the condition did not improve.He died 5 days later.The gene test showed ETFDH gene compound heterozygous mutations,one missense mutations from the father with normal phenotype c.770A > G (p.Y257C),a frameshift mutation from the mother with normal phenotype c.1281-1282 deletion mutation of AA (p.I428Rfs6).The protein structures of the mutations were predicted to be deleterious.Frameshift mutation c.1281-1282 deletion mutation of AA (p.I428Rfs6) were not included in the gene bank.A total of 21 cases with MADD were found from the literature.The clinical characteristics including:male (76.2%),dyspnea (52.4%),poor response (52.4%),hypoglycemia (47.6%),hepatomegaly (47.6%),elevated muscle enzymes (42.9%),immediate onset within 24 hour of birth (42.9%),abnormal family history (38.1%),malformation (38.1%),hyperammonemia (33.3%),metabolic acidosis (28.6%).81.0%of the patients were given vitamin B2 treatment,71.4% of carnitine,28.6% of coenzyme Q10,28.6% of low fat,low protein and high carbohydrate feeding.However,the prognosis of these patients was poor,76.2% died,and 42.9% died within 1 week after birth,and 23.8% survived.But all showed different degrees of mental retardation during follow-up periods.Conclusion Neonatal onset MADD can be characterized by dyspnea,poor response,hypoglycemia,hepatomegaly and elevated muscle enzymes.The disease is more common in early male neonates.It can be treated with vitamin B2 and L-carnitine,but with poor prognosis and high mortality.In this case,there were 2 sites in the ETFDH gene that formed complex heterozygous mutation:c.770A > G (p.Y257C) and c.1281-1282 deletion mutation of AA (p.I428Rfs6),while the latter is a new mutation.

7.
Chinese Journal of Endocrine Surgery ; (6): 497-501,521, 2018.
Artículo en Chino | WPRIM | ID: wpr-743380

RESUMEN

Objective To study the influence of miR-191 expression on the proliferation of human malignant meningioma cell line IOMM-Lee in vitro and to explore its mechanism.Methods The expression of miR-191 in malignant meningioma tissue,the adjacent normal tissues and human Malignant meningioma cell lines IOMM-Lee and CH157-MN was tested by Realtime PCR.miR-191 inhibitor was transfected in IOMM-Lee cells and MTT assay was employed to detect the cell viability.Bioinformatics prediction software was used in miR-191 target gene predictive analysis and verified by luciferase reporter system.The effect of EGR1 siRNA on the proliferation of IOMM-Lee cells was observed.Prorein interaction database was used to analyze which proteins could interact with EGR1.The effect of inhibition of EGR1 expression on TP53 protein expression was detected.The influence of inhibition of miR-191 expression on EGR1and TP53 expression was observed.Result The expression of miR-191 in malignant meningioma tissue (0.933±0.144) was higher than that in the adjacent normal tissue (0.459±0.104,P<0.05).The expressiong of miR-191 in humam malignant meningioma cell line IOMM-Lee (1.25±0.07) was higher than that in CH157-MN cell line (0.50±0.14,P<0.05).The cell proliferation capability was significantly decreased in miR-191 inhibitor group [(0.53±0.02) vs (0.74±0.01),P<0.05].EGR1 was identified and validated to be a target gene of miR-191.Inhibition of EGR1 gene can promote OMM-Lee cell proliferation (0.83±0.02,0.71 ±0.01,P<0.05).EGR 1 could positively regulate TP53 protein expression [(13 758.17±57.22) vs (10 239.00±71.30),P<0.001.miR-191 Inhibition could increase EGR1 [(14 663.00±80.08) vs (11 184.33±153.90),P<0.001] and TP53 expression [(15 206.17±102.08) vs(11 400.17±97.00),P<0.001].Conclusion Downregulation of miR-191 can inhibit the proliferation of IOMM-Lee cell,which may be related to the upregulation of EGR1/TP53 signaling pathway.

8.
Journal of Chinese Physician ; (12): 1792-1795, 2017.
Artículo en Chino | WPRIM | ID: wpr-705746

RESUMEN

Objective To investigate the prognostic value of serum neutrophil gelatinase-associated lipid transport protein (NGAL) and renal injury molecule 1 (KIM-1) in assessing neonatal sepsis with a-cute renal injury. Methods A total of 63 cases of renal injury with neonatal sepsis was collected from De-partment of Pediatrics, Affiliated Children's Hospital of Capital Institute of Pediatrics. The general condition of the patients, and neonatal critical case score ( NCIS) were recorded. The expressions of NGAL and KIM-1 in serum of all children were measured by venous blood and urine. Each case was followed up for 28 days to track the death of newborns. Pearson correlation analysis was used to test the correlation among NGAL, KIM-1, and NCIS;Multivariate regression analysis was used for NGAL, KIM-1, and other risk factors asso-ciated with neonatal sepsis kidney injury 28 days mortality. Receiver operating characteristic ( ROC) curve was used to compare the value of NGAL and KIM-1 in the prognosis of neonatal sepsis renal injury. The val-ues of NGAL and KIM-1 in the prognosis of neonatal sepsis renal injury were analyzed by ROC curve. Re-sults ⑴ After 28 days of follow-up, 63 cases of neonatal sepsis, and 22 died were found, which was ac-counted for 34. 92 percent of the total. ⑵ Compared to the survival group, the expressions of NGAL and KIM-1 in the death group were increased ( P<0. 01 ) . ⑶ Pearson correlation analysis showed that NGAL and KIM-1 expressions in peripheral blood were negatively correlated with NCIS. ⑷Multivariate regression analysis showed that NGAL and KIM-1 were independent risk factors for neonatal sepsis kidney injury ( P<0. 01). ⑸ ROC curve analysis showed that the area under the curve of NGAL and KIM-1 was 0. 79 (95%CI:0. 75-0. 93), and 0. 84 (95% CI:0. 71-0. 90), NGAL and KIM-1 were better than single detection with NGAL, or KIM-1, area under curve (AUC) was 0. 89 (95% CI:0. 78-0. 94) (P<0. 01). Sensitiv-ity of KIM-1 was superior to that of NGAL, and specificity of NGAL was superior to KIM-1. The sensitivity and specificity of both were better than single detection with NGAL and KIM-1. Conclusions NGAL and KIM-1 have good predictive value in assessing neonatal sepsis kidney injury mortality.

9.
Chinese Journal of Gastrointestinal Surgery ; (12): 675-679, 2016.
Artículo en Chino | WPRIM | ID: wpr-323591

RESUMEN

<p><b>OBJECTIVE</b>To evaluate the association of colorectal adenoma with metabolic syndrome (MS) and relevant parameters.</p><p><b>METHODS</b>Clinical data of 289 subjects who underwent screening colonoscopy in the University of Hong Kong-Shenzhen Hospital from January 2014 to June 2015 were retrospectively analyzed, including 130 normal subjects (normal group) and 159 cases with colorectal adenoma confirmed by pathology(adenoma group). Levels of MS-associated parameters were compared between the two groups, and the association of metabolic diseases with colorectal adenoma was examined.</p><p><b>RESULTS</b>The gender, smoking and drinking habit, regular physical activity, family history of colorectal cancer, and consumption history of long-term non-steroidal anti-inflammatory drugs were not significantly different between two groups (all P>0.05). As compared to normal group, adenoma group had higher body mass index (BMI) [(23.5±3.2) kg/m(2) vs. (22.7±2.8) kg/m(2), t=1.97, P=0.050], larger abdominal circumference [(83.4±10.3) cm vs. (79.6±13.8) cm, t=2.46, P=0.015], higher serum high-density lipoprotein level [(1.3±0.3) mmol/L vs. (1.2±0.3) mmol/L, t=2.03, P=0.044], and higher serum cholesterol [(5.4±1.0) mmol/L vs. (5.0±1.1) mmol/L, t=2.39, P=0.018]. No significant difference was demonstrated in comparing hip circumference and waist-hip ratio, as well as serum fasting glucose and triglyceride(all P>0.05). Higher incidence of colorectal adenoma was found in subjects with MS [69.8%(37/53) vs. 1.7%(122/236), P=0.017], overweight or obesity [65.1% (56/86) vs. 50.7%(103/203), P=0.025], hypertension [67.3%(37/55) vs. 52.1%(122/234), P=0.046] and hypercholesterolemia [66.7%(64/96) vs. 49.2%(95/193), P=0.005].</p><p><b>CONCLUSIONS</b>Metabolic syndrome increased the risk of developing colorectal adenoma. The mechanism may be related to higher serum cholesterol and high density lipoprotein, which may lead to the elevated catabolism of serum cholesterol. Screening colonoscopy should be performed for patients diagnosed as metabolic syndrome, especially for those with central obesity and hypercholesterolemia, thus early diagnosis and treatment of colorectal adenoma may be available.</p>


Asunto(s)
Humanos , Adenoma , Epidemiología , Glucemia , Química , Índice de Masa Corporal , Estudios de Casos y Controles , Colonoscopía , Neoplasias Colorrectales , Epidemiología , Hipercolesterolemia , Epidemiología , Hipertensión , Epidemiología , Tamizaje Masivo , Síndrome Metabólico , Epidemiología , Obesidad , Epidemiología , Sobrepeso , Epidemiología , Estudios Retrospectivos , Triglicéridos , Sangre
10.
Chinese Journal of Primary Medicine and Pharmacy ; (12): 2802-2805, 2015.
Artículo en Chino | WPRIM | ID: wpr-482381

RESUMEN

Objective To evaluate short -term clinical efficacy and adverse effects of brucea javanica oil emulsion(BJOE)combined with TP regimen in treating malignant pleural effusion(MPE)of non -small cell lung cancer(NSCLC)by double -way chemotherapy.Methods Totally 91 patients with MPE of NSCLC diagnosed by pathology were builted into the central venous catheter.The patients were assigned to group A,B and C according to therapies.Group A(21 cases)accepted infusion of BJOE 60mL into thoracic cavity twice a week.Group B(33 cases) accepted TP regime therapy,which included paclitaxel(TAX)intravenous chemotherapy at a dose of 150mg/m2 and cisplatin(DDP)injecting into thoracic cavity at a dose of 60mg +0.9% sodium chloride injection 30mL in first day, the therapy was repeated every 3 weeks.Group C(38 cases)combined the therapies of group A′s and B′s.Clinical efficacy and adverse effects were evaluated after 6 weeks.Results The objective response rate(81.6%)for group C was higher than group A or B(χ2 =8.605,P <0.05),the same result were in CR ratio(55.3%)(χ2 =10.384,P <0.05)and PD ratio(5.3%)(χ2 =8.649,P <0.05).There were no serious adverse effects in the three groups.The occurring rate of white blood cell reduction in group A was lower than those of group B and C,there was statistically significance(χ2 =8.999,P <0.05).Conclusion The efficacy of BJOE combined with TP regimen in treating MPE of NSCLC by double -way chemotherapy is better than that of single chemotherapy or alone intrathoracic treatment, and the adverse effects could be well tolerated.

11.
Chinese Journal of Oncology ; (12): 324-328, 2014.
Artículo en Chino | WPRIM | ID: wpr-328943

RESUMEN

<p><b>OBJECTIVE</b>The study intended to investigate the effect and mechanism of endoplasmic reticulum stress on cisplatin resistance in ovarian carcinoma.</p><p><b>METHODS</b>RT-PCR and Western blot were used to test the expression of mTOR and Beclin1 mRNA and protein in ovarian cancer SKOV3 cells after saquinavir induction. MTT assay was used to analyze the influence of saquinavir on cisplatin sensitivity in SKOV3 cells.</p><p><b>RESULTS</b>The IC50 of SKOV3 cells was (5.490 ± 1.148) µg/ml. After induced by Saquinavair 10 µmol/L and 20 µmol/L, the IC50 of SKOV3 cells was increased to (11.199 ± 0.984) µg/ml and (14.906 ± 2.015) µg/ml, respectively. It suggested that the sensitivity of ovarian cancer cells to cisplatin was decreased significantly (P = 0.001). The expression of mTOR and Beclin1 mRNA and protein was significantly different among the five groups: the (Saquinavair+DDP) group of, Saquinavair group, LY294002 group, DDP group and control group (P < 0.001) . The expressions of mTOR and Beclin1 mRNA were highest in the (Saquinavair+DDP) group, 0.684 ± 0.072 and 0.647 ± 0.047, respectively; Secondly, the Saquinavair group, 0.577 ± 0.016 and 0.565 ± 0.037, respectively. The expressions of mTOR and Beclin1 proteins were also highest in the (Saquinavair+DDP) group, 0.624 ± 0.058 and 0.924 ± 0.033, respectively, followed by the Saquinavair group, 0.544 ± 0.019 and 0.712 ± 0.024. 3-MA inhibited the autophagy and restored cisplatin sensitivity in the SKOV3 cells after Saquinavir induced ER stress (P < 0.001).</p><p><b>CONCLUSIONS</b>Saquinavir can effectively induce endoplasmic reticulum stress in SKOV3 cells. Endoplasmic reticulum stress can decrease the sensitivity to cisplatin in SKOV3 cells. The mechanism of the decrease of sensitivity to cisplatin in SKOV3 cells may be that ERS regulates cell autophagy through the mTOR and Beclin1 pathways. ERS of tumor cells and autophagy may become a new target to improve the therapeutic effect of chemotherapy and to reverse the drug resistance in tumor treatment.</p>


Asunto(s)
Femenino , Humanos , Antineoplásicos , Farmacología , Proteínas Reguladoras de la Apoptosis , Genética , Metabolismo , Autofagia , Beclina-1 , Línea Celular Tumoral , Cisplatino , Farmacología , Cistadenocarcinoma Seroso , Metabolismo , Patología , Resistencia a Antineoplásicos , Estrés del Retículo Endoplásmico , Inhibidores de la Proteasa del VIH , Farmacología , Proteínas de la Membrana , Genética , Metabolismo , Neoplasias Ováricas , Metabolismo , Patología , ARN Mensajero , Saquinavir , Farmacología , Serina-Treonina Quinasas TOR , Genética , Metabolismo
12.
Space Medicine & Medical Engineering ; (6)2006.
Artículo en Chino | WPRIM | ID: wpr-580387

RESUMEN

The paper introduced the recent development of optical tweezers array.The particle manipulation system could be set up based on several methods,such as acousto-optics deflectors(AOD),diffractive optical elements(DOE),spatial light modulators(SLM),interference technique,vertical cavity surface emitting laser(VCSEL),optical fibers and micro-lens arrays as well.The principle,specification and basic structure of each method were introduced and analyzed briefly.Taking the advantage of particle trapping,optical tweezers array was very useful for manipulation of micron size particles,such as cells.Combining with microfluidics and MEMs fabrication,optical tweezer array,the ultraminiature and portable particle sorting system,would be a good choice for space biological research.

13.
Chinese Journal of Laboratory Medicine ; (12)2001.
Artículo en Chino | WPRIM | ID: wpr-582846

RESUMEN

Objective To investigate the changes of silver-stainng protein of nuclear organizer regions(AgNORs)expression of T lymphocytes and helper T (Th) cell subsets in peripheral mononuclear cells (PBMC) from cancer patients and to analyze the relationship between them.Methods AgNORs expression in T cells activated by a multiple clonal activator was examined using a special image system. After activation of PBMC with ionomycin plus PMA for 5 h, both interferon-? (IFN ?) and interleukin-4 (IL-4)producing cell frequencies were detected by enzyme-linked immunospot assay (ELISPOT). The stimulated with ionomycin plus PMA for 24 h, the IFN ?-and IL-4-production were assayed by ELISA.Resuts AgNORs expression of activated T cells in PBMC from cancer patients (n=86) and healthy persons (n=44) was (4.90?1.20) I.S% and (7.82?1.28) I.S% respectively. Th2 frequency was significantly higher and the ratio of Th1 to Th2 frequency was more lower in cancer patient group. Moreover, the IFN ? and IL-4 production in cancer patient group were changed in the way similar to Th subset frequencies. In lung cancer patients the AgNORs expression, Th1 frequency, Th1/Th2 ratio and IFN ? production were significantly decreased in metastasis or in recurrence status,AgNORs expression in cancer patients correlated with their Th1 frequencies, Th1/Th2 ratio, IFN ? production levels and Karnofsky′s estimators.Conclusions In analyzed cancer patient cases, the expression of AgNORs and the function of Th1 cell were significantly decreased and correlated.

14.
Chinese Journal of Immunology ; (12)1985.
Artículo en Chino | WPRIM | ID: wpr-536464

RESUMEN

To compare immunogenicity of vaccine produced by three rabies virus stains( aG-,CTN.,CaG) respectively and determine their the ability against lethel challenge of rabies virus.Methods: By ELISA to determine sera potency of rabbits as well as hamsters and guinea-pigs which have been vaccinated different rabies respectively .To neutralize three different rabies strain with sera of hamster vaccinated and carry on neutralization experiments in mice.Results:In rabbits and guinea-pigs groups,rabies vaccine protency(by ELISA determination) vaccinated cell-adapted virus strain (CaG and CTN) is higher than one of vaccinated guinea-pig' strain virus strain's (aG), sera ability of hamster vaccinated cell-adapted strain against three rabies virus lethel challenge is higher than one of guinea-pig strain virus strain' g, too. Conclusion: Immunogenicity of rabies vaccine produced by cell-adapted strain is better than one of guinea-pig'sbrain virus strain's.

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