Secondary Immune Mediated Hemolytic Anaemia in Dogs in Chennai,Tamil Nadu

Immune-mediated hemolytic anemia (IMHA) is the most common autoimmune disease in dogs. This study was conducted to study the incidence and clinicopathological changes of secondary IMHA, which is having any secondary underlying triggering causes. The anaemic dogs brought with clinical signs such as pale or icteric mucous membranes were screened for IMHA by saline agglutination and spherocyte count and confirmed by flow cytometry. The positive cases were further subjected to haematology, biochemistry, coagulation profile, MAT and polymerase chain reaction (PCR) for the diagnosis of underlying secondary causes like Babesia spp, Ehrlichia canis and Leptospira spp. (secondary IMHA). Thirty two cases were positive for IMHA, out of which thirteen cases were primary IMHA (17.3 %) and remaining nineteen cases were secondary IMHA (82.7 %) due to underlying causes such as Babesia gibsoni (13), Ehrlichia canis (3) and Leptospira spp. (3) respectively. Highest incidence was observed in Labrador dogs with age group of 2-8 years in male dogs. The most common clinicopathological findings were anaemia with reduced Hb, PCV and RBC, leucocytosis, neutrophilia, monocytosis, thrombocytopenia, elevated PT, BUN, Creatinine, ALT, ALP, hypoalbuminemia and hyperbilirubinaemia

Sorter de citometría de flujo: repercusiones en los indicadores clave de rendimiento de un laboratorio de reproducción asistida / Flow cytometry sorter: results in the key performance indicators of an assisted reproductive technology

Resumen OBJETIVO: Evaluar si la manipulación de gametos con sorter de citometría de flujo repercute negativamente en los indicadores clave de rendimiento de un laboratorio de reproducción asistida. MATERIALES Y MÉTODOS: Estudio descriptivo y retrospectivo, llevado a cabo en parejas a quienes se efectuó fecundación in vitro mediante inyección intracitoplasmática de espermatozoides (ICSI), con selección espermática, mediante un sorter de citometría de flujo, para selección de sexo. El estudio se efectuó en el New Hope Fertility Center de Guadalajara y Ciudad de México, de junio de 2014 a agosto de 2017. Los resultados se compararon con un grupo control seleccionado al azar. Se evaluaron los indicadores decisivos de rendimiento (KPI´s); tasa de fecundación normal, anormal (1PN, ≥ 3 PN) y fallida; tasa de degeneración posterior a ICSI; tasas de segmentación o división, blastocisto, implantación (segmentación y blastocisto) y recién nacido. Se utilizó la prueba t de Student para dos muestras y se consideró estadísticamente significativo el valor de p < 0.05. RESULTADOS: Se evaluaron 150 ciclos. Grupo 1: ICSI con selección espermática y sorter de citometría de flujo (n = 40); Grupo 2: ICSI sin sorter de citometría de flujo (n = 110). Los indicadores clave de rendimiento del grupo 1 disminuyeron; se reportaron tasas de fecundación fallida de 1.6%, blastocisto 17.4%, implantación en la segmentación 10%, implantación en blastocisto 14.2% y de recién nacido 14.5%. CONCLUSIONES: La manipulación de gametos con sorter de citometría de flujo reportó un efecto negativo en los indicadores clave de rendimiento del laboratorio de reproducción asistida, específicamente en las tasas de blastocisto, implantación de blastocisto y de recién nacido.

Abstract OBJECTIVE: To evaluate if the manipulation of gametes with a flow cytometry sorter has a negative effect on the key performance indicators (KPI´s). MATERIALS AND METHOD: Descriptive and retrospective analysis, in couples undergoing In a Vitro Fertilization (IVF) by ICSI, with sperm selection, using a flow cytometry sorter for sex selection. The study was conducted at the New Hope Fertility Center in Guadalajara and Mexico City, from June 2014 to August 2017. The results were compared with a randomly group without a flow cytometry sorter. KPI´s were evaluated; normal fertilization rate, abnormal (1PN, ≥3 PN), failed fertilization, ICSI damage rate, cleavage rate, blastocyst development rate, implantation rate (cleavage and blastocyst-stage) and live birth rate. A Student's t-test was made for two samples considering significant differences with p < 0.05. RESULTS: 150 cycles were evaluated. Group 1: ICSI with sperm selection by a flow cytometry sorter (n = 40); Group 2: ICSI without sperm selection (n = 110). Observing with statistical significance a decreased of the KPI´s of Group 1: failed fertilization rate (1.6%), blastocyst development rate (17.4%), implantation rate (cleavage-stage) (10%), implantation rate (blastocyst-stage) (14.2%) and live birth rate (14.5%). CONCLUSIONS: The manipulation of gametes with the flow cytometry sorter, has a negative effect on the assisted reproductive technology KPI´s; specifically, in the blastocyst rate, blastocyst implantation rate and live birth rate.

Critical evaluation of two models of flow cytometers for the assessment of sperm DNA fragmentation: an appeal for performance verification / 亚洲男科学杂志(英文版)

Lack of standardized, reproducible protocols and reference values is among the challenges faced when using new or upgraded versions of instruments in reproductive laboratories and flow cytometry. Terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay combined with flow cytometry routinely used for diagnostic measurement of sperm DNA fragmentation (SDF) is a unique example. Any change in the setting of the standard instrument, including upgrades of hardware or software, can lead to different results and may affect clinicians' decision for treatment. Therefore, we compared TUNEL results of SDF obtained from a standard (C6) flow cytometer with a newer version of the same instrument (C6 Plus) and examined the cutoff, sensitivity, and specificity without calibration (adjustment) and after adjustment. Identical sperm preparation and matched acquisition settings were used to examine the performance of two flow cytometers. The strength of agreement of the results between the two observers was also assessed. After adjustment of the settings, overall concordance became high and the two cytometers showed 100% positive and negative predictive value with 100% area under the curve. The overall correlation coefficient observed between C6 and C6 Plus was highly significant (P < 0.0001; r = 0.992; 95% confidence interval [CI]: 0.982-0.997). After adjustment, the two cytometers showed very high precision of 98% and accuracy of >99%. The interobserver agreement on C6 flow cytometer for the two observers was 0.801 ± 0.062 and 0.746 ± 0.044 for C6 Plus. We demonstrated a strong agreement between the samples tested on the two flow cytometers after calibration and established the robustness of both instruments.

Critical evaluation of two models of flow cytometers for the assessment of sperm DNA fragmentation: An appeal for performance verification / 亚洲男科学杂志(英文版)

Lack of standardized, reproducible protocols and reference values is among the challenges faced when using new or upgraded versions of instruments in reproductive laboratories and flow cytometry. Terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay combined with flow cytometry routinely used for diagnostic measurement of sperm DNA fragmentation (SDF) is a unique example. Any change in the setting of the standard instrument, including upgrades of hardware or software, can lead to different results and may affect clinicians' decision for treatment. Therefore, we compared TUNEL results of SDF obtained from a standard (C6) flow cytometer with a newer version of the same instrument (C6 Plus) and examined the cutoff, sensitivity, and specificity without calibration (adjustment) and after adjustment. Identical sperm preparation and matched acquisition settings were used to examine the performance of two flow cytometers. The strength of agreement of the results between the two observers was also assessed. After adjustment of the settings, overall concordance became high and the two cytometers showed 100% positive and negative predictive value with 100% area under the curve. The overall correlation coefficient observed between C6 and C6 Plus was highly significant (P 0.0001; r = 0.992; 95% confidence interval [CI]: 0.982-0.997). After adjustment, the two cytometers showed very high precision of 98% and accuracy of 99%. The interobserver agreement on C6 flow cytometer for the two observers was 0.801 0.062 and 0.746 0.044 for C6 Plus. We demonstrated a strong agreement between the samples tested on the two flow cytometers after calibration and established the robustness of both instruments.

Design of Dyson Flow Cytometry System / 中国医疗器械杂志

In order to meet the needs of the flow cytometry for the simultaneous analysis of multiple fluorescence wavelengths and small volume, the design method of flow cytometry spectrum analysis system is presented by analyzing the characteristics of Dyson structure. And according to the method, a flow cytometry spectrum analysis system is disigned with Dyson type.The system's spectral range is 400 nm to 800 nm, the defocused spot size is less than the pixel size 24μ mm, the ransfer function value is above 0.8 at the Nyquist cut-off frequency 21 lp/mm,the spectral resolution is less than 3 nm, and the overall size is 83.54 mm×85.60 mm.The system has good optical performance and small volume, which meets the needs of the flow cytometry fluorescence spectral analysis. The outstanding innovation of this system is the application of Dyson light splitting structure and EMCCD detector which is high speed and high sensitivity.

Selection of Unnecessary Urine Culture Specimens Using Sysmex UF-5000 Urine Flow Cytometer / 대한임상미생물학회지

BACKGROUND: Urine culture is one of the most frequently requested tests in microbiology. Automated urine analyzers yield much infection-related information. The Sysmex UF-5000 analyzer (Sysmex, Japan) is a new flow cytometry urine analyzer capable of quantifying urinary particles, including bacteria, WBCs, and yeast-like cells (YLCs) and can provide a Gram stainability flag. In this work, we evaluated how many unnecessary urine cultures could be screened out using the UF-5000. METHODS: We compared the culture results of 126 urine samples among 453 requested urine cultures (from sources other than the Urology and Nephrology departments) with urinalysis results. Urine cultures were considered positive if bacterial or YLC growth was ≥104 CFUs/mL. RESULTS: We used urinalysis cut-off values of 50/µL and 100/µL for bacteria and YLC, respectively. Forty eight of the 126 (38.1%, or 10.6% of 453 requested) cultures were below these cut-off values and did not contain any culture-positive samples. CONCLUSION: Bacteria and YLC counts generated using the UF-5000 analyzer could be used to screen out negative cultures and reduce urine culture volume by ~10% without sacrificing detection of positive cultures.

Effects of long-term consumption of Fallopia multiflora on mouse hematopoietic system / 中国比较医学杂志

Objective To investigate the effects of long-term consumption of Fallopia multiflora on mouse hematopoietic system.Methods Forty 10-month old female C57BL/6J mice were equally divided into two groups at random, the control group fed with normal food , and the experimental group , given food with added Fallopia multiflora. After 10 month, the mice were sacrificed, and the peripheral blood, spleen, thymus and bone marrow cells were examined by flow cytometry.Results In the mice fed with Fallopia multiflora, the percentage of B cells in the spleen and CD 4 +cells in the thymus were increased , and CD8 + cells in the thymus and bone marrow hematopoietic stem cells were decreased , among the bone marrow cells , G0 cells were increased , but G1 and G2/S/M cells decreased .Conclusions Long-term proper consumption of Fallopia multiflora can delay the ageing of the hematopoietic system , and sustain its stability.

Anti-proliferative and apoptotic properties of a peptide from the seeds of Polyalthia longifolia against human cancer cell lines.

The peptides produced enzymatically from various plants have shown various biological activities including cytotoxicity. Different types of cytotoxic peptides have been reported from the seeds and leaves of Violaceae, Rubiaceae and Annonaceae families. In this study, we report purification and characterization of peptide(s) showing cytotoxic activity against A549 and HeLa cancer cell lines from the seeds of Polyalthia longifolia (Annonaceae). Seed proteins of P. longifolia were extracted and hydrolyzed using trypsin. The enzyme hydrolysate was applied on to a Sephadex G10 column and eluted using Tris-HCl buffer (pH 7.5). Two fractions F1 and F2 were obtained, of which F2 showed significant cytotoxic activity against lung (A549) cancer cells at 10 µg/mL and cervical (HeLa) cancer cell lines at 30 µg/mL, as revealed by the MTT assay. DNA fragmentation was observed in the tested cancer cell lines treated with F2 peptide at a concentration of 10 µg/mL and 30 µg/mL, respectively. Further, increased number of apoptotic cells was observed in sub-G0 phase of cell cycle of A549 and HeLa cell lines, when treated with 10 µg/mL and 30 µg/mL of F2, as revealed by the flow cytometric analyses. FTIR spectrum of F2 peptide detected the presence of stretching vibrations of carboxylic acid OH residue with peak at 3420 cm-1 and carbonyl (C=O) groups at 1636 cm-1, respectively. RP-HPLC analysis of F2 peptide showed a single peak at a retention time of 12.8 min detected at 280 nm, depicting the purity of F2 to be more than 90%. LC-ESI-MS/MS analysis showed the average theoretical mass of F2 to be 679.8 using m/z ratios. In conclusion, the findings suggest that F2 peptide is an effective inducer of apoptosis of cancer cells, thus offers an important strategy in the development of cancer therapeutics.

Avaliação da apoptose de leucócitos polimorfonucleares CH138+ em leite bovino de alta e baixa contagem de células somáticas : dados preliminares / Polymorphonuclear leukocytes CH138+ apoptosis evaluation in milk with high and low somatic cell count - preliminary data

A apoptose de leucócitos polimorfonucleares (PMN) é um evento central no processo de resolução da inflamação. Sendo a contagem de células somáticas (CCS) um indicador da situação imunológica da glândula mamária, o presente estudo buscou esclarecer a influência que esses fatores têm um sobre o outro e sobre a evolução do processo inflamatório. Marcaram-se as amostras de leite com anexina-V, iodeto de propídeo (PI), anticorpo anti-CH138A. Encontrou-se correlação negativa entre apoptose de PMN e CCS, além de diferença estatística entre um grupo de alta CCS e um grupo de baixa CCS quanto à taxa de PMN viáveis, em apoptose, em necrose e em necrose e/ou apoptose. De modo geral, o grupo de alta celularidade apresentou menos CH138+ em apoptose e mais células em necrose ou viáveis do que o grupo de baixa celularidade. Conclui-se que apoptose de PMN e CCS estão relacionados, e que em mamas com CCS elevada este evento está diminuído. Apesar de haver maior disponibilidade de fagócitos para a defesa nessa situação, os efeitos anti-inflamatórios da apoptose também estão diminuídos, enquanto os efeitos pró-inflamatórios da necrose estão aumentados, o que pode colaborar com a cronificação da inflamação.

Polymorphonuclear leukocyte (PMNL) apoptosis is central to the successful resolution of inflammation. Since Somatic Cell Count (SCC) is an indicator of the mammary gland's immune status, this study sought to clarify the influence that these factors have on each other and on the evolution of the inflammatory process. Milk samples were stained with annexin-V, propidium iodide (PI), primary antibody anti-CH138A. Negative correlation between SCC and PMNL apoptosis was found, and a statistical difference between high SCC group and low SCC group was observed concerning the rate of viable PMNL, apoptotic PMNL, necrotic PMNL and necrotic and/or apoptotic PMNL. Overall, the high cellularity group presented lower proportions of CH138 + cells undergoing apoptosis and higher proportions of viable and necrotic CH138+ cells. Thus, it can be concluded that PMNL apoptosis and SCC are related factors, and that in high SCC, milk apoptosis is delayed. Although there is a greater amount of active phagocytes in this situation, apoptosis' anti-inflammatory effects are decreased, while necrosis' pro-inflammatory effects are increased, which can contribute to chronic inflammation.

Detection and purification of cultured rat retinal Müller cell by flow cytometer / 中华实验眼科杂志

Background Establising the culture model of Müller cells for obtaining the highly putified target cells is essential for the study about the physiology and pathology of retinal Müller cells. The exsiting purifing method for culturing Müller cells is dissatisfactory. Objective This study was to establish a method to obtain high purifing Müller cells. Methods The retina from 5 clean newborn SD rats were isolated and digested by 0. 01% trypsin and cultured in DMEM containing 10% fetal bovine serum. The cellular suspension was then prepared,and the target cells were screened using flow cytometry based on the size and the quantity of cells. Cultured and passaged cells were identified by transmission electron microscope and light microscope. Immunocytochemistry was used to detecte the expression of GFAP in cultured cells for the determination of type and purity of the cells. Results The cells showed the similar shape to retinal Müller cells after primarily culture with the large volume, and some small other types of cells could been seen. The growth of cells was quickly 3 weeks later. The fibroblasts were removed using sticking-wall by steps,and neurons were eliminated following passage. Aboundent of cellular organs were seen under the transmission electron microscope. The positive response rate of the cells for CFAP was 100%. Conclution Flow cytometry offer a rapid and feasible approach for purifying Muller cell and it builds the foundation for further study about Müller cells.

Evaluation of Automated Flow Cytometric Analyzer Sysmex UF-100 for Cell Counting of Cerebrospinal Fluid / 임상검사와정도관리

BACKGROUND: The counting of erythrocyte and leukocyte in cerebrospinal fluid (CSF) is still performed microscopically, using a chamber in most laboratories. However, it is imprecise, has wide inter-observer variability, and is labor-intensive and time-consuming. This study was aimed to examine the possibility of using Sysmex UF-100 flow cytometry (Toa Medical Electronics, Japan) as a means of counting cells in CSF samples. METHODS: From May to September 2006, we obtained 115 routinely collected CSF samples from 90 patients. We compared the performance of the automated method of the UF-100 with the manual counting method using Neubauer chamber. RESULTS: Accuracy statistics for erythrocyte and leukocyte showed a high correlation between the UF-100 and the manual counting method, with correlation coefficients of r2=0.95 and 0.89, respectively. Linearity results demonstrated that the UF-100 method provides accurate results throughout the reportable ranges of erythrocyte and leukocytes. A high degree of inter-assay precision for the UF-100 method was seen. Five cases with high lymphocytes percentage showed falsely low value of leukocyte counts. CONCLUSIONS: The flow cytometric analysis of CSF with the UF-100 offered a rapid and reliable erythrocyte and leukocyte count. UF-100 is expected to be useful for screening method in CSF cell counting. But the manual counting method is still needed for the samples with high leukocyte count or contaminated with peripheral bloods.

Evaluation of Sysmex UF-100 Urine Flow Cytometer in Predicting the Outcome of Urine Cultures / 대한임상미생물학회지

BACKGROUND: Urine culture is still the standard laboratory procedure for definitive diagnosis of urinary tract infection. The author investigated the feasibility of eliminating the costs and time expended in examination of negative urine cultures by combining the Sysmex UF-100 (Toa Medical Electronics, Kobe, Japan) urine flow cytometer and urine strips to predict the outcome of urine cultures. METHODS: Seven hundred eighty one specimens were obtained from 661 males and 120 females (mean age, 66 years; range, 4~93 years). Urine cultures were performed with 10,000 colony forming units (CFU)/mL as the positive criterion. Each sample was analyzed by Clinitek Atlas (Bayer Co., Elkhart, IN, USA) using N-multistix SG urine strips, followed by identification and quantification of the formed elements on the Sysmex UF-100. RESULTS: Of the 781 urine specimens examined, 402 (51.5%) yielded positive cultures. The diagnostic performance of the UF-100 results for bacteria or WBC vs the urine strip results for leukocyte esterase or nitrite in comparison with the urine culture results were as follows: sensitivity 0.88 vs 0.80, specificity 0.77 vs 0.77, positive predictive value 0.80 vs 0.78, and negative predictive value 0.85 vs 0.79. The highest sensitivity (0.91) and the lowest false negative (0.05) were obtained when any one of the four tests was positive. CONCLUSION: The use of Sysmex UF-100 flow cytometer and urine strip results, seperately or in combination, does not accurately predict the outcome of urine cultures.

Application of Flow Cytometer for Diagnosis and Prognosis of Tumors of the Salivary Glands / 医学研究杂志

Objective In order to investigate the ability of flow cytometer (FCM) to diagnose malignant tumor and evaluate prognosis of tumors in salivary glands, the DNA ploidy and cell cycle had been analysed and the association of these parameters with histologic grades, lymph node metastasis were studied. Methods The fresh tissues of benign tumor, mixed tumor and malignant tumor were detected by FCM. Results DNA aneuploid has not been detected in benign tumors; 44 cases of mixed tumor has been detected with DNA aneuploid nd with high SPF; it suggests that these cases have malignant trend; most of malignant tumor were detected with high aneuploid. DI was not correlated with lymph node metastases, but correlated with histologic grades (P

Flow Cytometric Method for Counting Residual Leukocytes / 대한수혈학회지

BACKGROUND: Simple manual method using a Nageotte hemocytometer counting residual leukocytes [White blood cells(WBC)] in blood components is subjective, labor-intensive, time consuming and variable within and between laboratories. The aim of this study was to evaluate usefulness for flow cytometric method to determinate very low numbers of leukocytes in leukocyte-free blood components. METHODS: Epics XL-MCL (Beckman Coulter Co.) was used for determination of fluorescence-labelled cells. The DNA in leukocytes was stained using propidium iodide (PI) and leukocytes were automatically analysed by flow cytometer. RESULTS: Linearity determined over a range of 0.5-50 WBC/muL was a value of r=0.994. The detection limit of this method was 4.4 WBC/muL and accuracy was 86.6% with linearity of r=0.991 over the 5-50 WBC/muL. Reproducibility was CV of 9.1% for 25.8 WBC/muL and 14.7% for 7.1 WBC/muL, respectively. CONCLUSION: Flow cytometric techniques provide a reproducible and objective tool for counting residual WBC in leukocyte free blood components compared with the Nageotte hemocytometer.

Study on X-ray induced frequency of micronucleated erythrocytes in mice bone marrow by flow cytometer / 第三军医大学学报

Objective To detect the frequency of micronucleated polychromatic erythrocytes(fMNPCE) in mice bone marrow after irradiated with X-ray by flow cytometer(FCM) to study whether fMNPCE detecting method could become a rapid biodosimeter for early radiation damage. Methods BALB/c mice were randomly assigned to receive the X-ray irradiation at dose of 0.5,3.0,6.0 Gy(n=4 for each irradiation dose),and the bone marrow was collected in 6,12,24 h after irradiation.Another 4 mice were intraperitoneally injected with cyclophosphamide twice as positive control,of which the bone marrow was collected in 42 h after intoxication began and 4 treated with spurious radiation as normal control.Results fMNPCE in mice bone marrow increased remarkably in 24 h after exposure to 0.5 Gy X-ray(P

EFFECTS OF SELENIUM ON CARCINOGENESIS AND ADRENAL CORTEX OF RAT STOMACH / 解剖学报

Objective To investigate the histochemical changes of 3?-hydroxysteroid dyhydrogenase(3?-HSD), sucinic dehydrogenase(SDH) and lipid on rat adrenal cortex in the carcinogenesis-resistance with selentum. Methods Wistar rats stomach carcinogenesis (formation of aneuploid cells in the glandular stomach mucosa) was induced by MNNG(N-methy1-N-nitroso-guanidine,20 mg/kg)gavage. The changes of the adrenal cortex were studied by histochemistry and image analysis during preventing glandular stomach cancer with selenium(0.1 mg/kg and 2.0 mg/kg) Results 1.Dietary Se inhibited the aneuploid cell formation,which induced by MNNG gavage in Wistar rat stomach; 2.The histochemical reactions of 3?-HSD and SDH were both significantly stronger in experimental group than that in normal control group in the course of the rat stomach carcinogenesis(P

Regulatory T cells in peripheral blood of chronic renal insufficient / 中国免疫学杂志

Objective:To investigate the significance of regulatory T cells in peripheral blood of chronic renal insufficientce.Methods:The peripheral blood samples were collected from 40 patients with chronic renal insufficient.The ratios ot CD4+T cell in lymphocyte and CD4+CD127-Treg and CD4+CD25+CD127-Treg in CD4+T were detected by flow cytometry.Results:The number of CD4+T in lymphocyte of chronic renal insufficient was higher than in healthy control group and there wasn’t significantly difference of the CD4+CD25+CD127-Treg ratios in CD4+T between chronic renal insufficience and healthy central.The ratio of CD4+T cells in lymphocytes of chronic renal insufficience was lower than in healthy control group except compensatory stage.There was no correlation between CD4+T cell ratios in lymphocytes,CD4+CD127-Treg or CD4+CD25+CD127-Treg ratios in CD4+T cells and the values of BUN,Cr among the hypertension patients.Conclusion:The number of CD4+T cells increases,and CD4+CD127-Treg decreases in the patients with chronic renal insufficience and their immune functions are shown in disoroler .

Diagnostic value of HLA-B27 by flow cytometer in ankylosing spondylitis / 中国实用内科杂志

Objective To investigate the diagnostic value of HLA-B27 in ankylosing spondylitis(AS).Methods A diagnostic test was employed in the study.The patients with ankylosing spondylitis and the controls in Shandong Provicial Hospital from 2001—2005 were enrolled in the study.HLA-B27 was detected by flow cytometer assay when recruited.SPSS 13.0 was used for statistical analysis.Results Totally 133 patients with AS and 88 controls were available in the study.HLA-B27 was significantly different between AS group and the controls(P=0.000).The areas below ROC curve was 90.5%.Three cut-off points of HLA-B27,11.55%,46.6% and 85.25%,were selected based on clinical practice and ROCcurve,and the sensitivity was 94.7%,90.2% and 63.6%,the specificity was 56.8%,92.0% and 95.45%.Conclusion HLA-B27 which is more than 46.6% is a valuable marker for the diagnosis of AS.

Expression and heterogeneity of epidermal growth factor receptor in human salivary gland mucoepidermoid carcinoma MEC-1 cells / 实用口腔医学杂志

Objective: To study the expressien and heterogeneity of epidenmoid growth factor receptor(EGFR) in human mucoepidermoid carcinoma MEC 1 cells. Methods: EGFR1 McAb (MaH) immunofluorescent stain and flowcytometer (FCM) were used to detect the positive percentage and heterogeneity of EGFR expression in MEC 1 cells. Results: Positive expression of EGFR was found in 100% of MEC 1 cells. Average peak channel of relative fluorescent intensity was 8.006?4.410. Double peaks of MEC 1 cells from single parameter histogram was observed with FCM. Conclusion: All MEC 1 cells express EGFR and there are heterogeneous cell populations of EGFR expression in MEC 1 cell line.

Study of adhesion molecules ?_2 integrin CD11c and CD18 expressions of peripheral blood leukocytes in patients with acute ischemic stroke / 临床神经病学杂志

Objective To explore the expression and significance of adhesion molecules ?2 integrin CD11c, CD18 in the polymorphonuclear neutrophils (PMN) and mononuclear leukocytes (MNL) of peripheral blood in patients with acute ischemic stroke (AIS).Methods Using indirect immunofluorescence and adopting a flow cytometry, the expressions of CD11c, CD18 in PMN and MNL in peripheral blood were measured within 72 h and 7 d after onset in 28 patients and 28 healthy controls.Results In AIS group, the expressions of CD11c, CD18 in PMN and MNL within 72 h ( 20.82?5.88, 218.25?89.00, 34.78?14.56 and 286.75?95.50, respectively) and at 7 d ( 18.60?5.52, 185.52?68.44, 31.97?14.47and 247.00?88.06, respectively) were significantly higher than those of normal control group ( 15.63?3.01, 150.76?41.20, 20.20?8.50 and 186.38?52.97, respectively)(all P