Evaluation of cell adhesion molecules (LFA-1 and L-selectin) in ankylosing spondylitis patients after treatment with ?-D-mannuronic acid (M2000)

Background & objectives: To examine ?-D-mannuronic acid (M2000) effects on L-selectin shedding and leucocyte function-associated antigen-1 (LFA-1) expression as mechanisms of action of this drug in patients with ankylosing spondylitis (AS). Methods: To investigate the molecular consequences of ?-D-mannuronic acid on L-selectin shedding, flow cytometry method was used. Furthermore, the effect of it on LFA-1 gene expression was analyzed by using quantitative real time (qRT)-PCR technique. Results: The LFA-1 expression in patients with AS was higher than controls (P=0.046). The LFA-1 expression after 12 wk therapy with ?-D-mannuronic acid was meaningfully decreased (P=0.01). After 12 wk treatment with ?-D-mannuronic acid, the frequency of CD62L-expressing CD4+ T cells in patients with AS, was not considerably altered, compared to the patients before therapy (P=0.5). Furthermore, after 12 wk therapy with ?-D-mannuronic acid, L-selectin expression levels on CD4+ T-cells in patients with AS, were not remarkably changed, compared to the expression levels of these in patients before treatment (P=0.2). Interpretation & conclusions: The results of this study for the first time showed that ?-D-mannuronic acid can affect events of adhesion cascade in patients with AS. Moreover, ?-D-mannuronic acid presented as an acceptable benefit to AS patients and could aid in the process of disease management

Change of serum D-D, sVCAM-1 and P-selectin after limb fractures surgery and their relationship with thrombosis / 中国医师杂志

Objective:To investigate the relationship between change of serum D-dimer (D-D), soluble vascular cell adhesion molecule 1 (sVCAM-1), P-selectin and thrombosis after limb fracture surgery.Methods:289 patients with limb fractures who were treated in the emergency department of Shulan (Hangzhou) Hospital from January 2021 to January 2022 were selected as the study subjects. They were divided into deep vein thrombosis (DVT) group ( n=62) and non-DVT group ( n=227) according to whether DVT occurred after operation. The levels of prothrombin time (PT), activated partial prothrombin time (APTT), D-D, sVCAM-1 and P-selectin were measured before and after operation in all patients. The levels of PT, APTT, D-D, sVCAM-1 and P-selectin were compared between DVT group and non-DVT group. Logistic sequential stepwise regression analysis was used to analyze the risk factors of postoperative thrombosis in patients with limb fractures. Results:There was no statistically significant difference in PT and APTT between 289 patients with limb fractures after operation and before operation (all P>0.05), while the levels of serum D-D, sVCAM-1 and P-selectin after operation were higher than that before operation (all P<0.05). There was no significant difference in general data between DVT group and non-DVT group (all P>0.05); There was no statistically significant difference in PT and APTT before and after operation between DVT group and non-DVT group (all P>0.05). The levels of serum D-D, sVCAM-1 and P-selectin before and after operation in DVT group were higher than those in non-DVT group (all P<0.05). Logistic sequential stepwise regression analysis showed that high levels of D-D, sVCAM-1 and P-selectin were risk factors for thrombosis after limb fracture surgery (all P<0.05). Conclusions:High levels of D-D, sVCAM-1 and P-selectin are risk factors for thrombosis after limb fracture surgery.

Effects of salidroside on cerebral vascular endothelial cells in MCAO rats / 中国药理学通报

Aim To study the effect of salidroside (SAL) on cerebral vascular endothelial cells of rats with ischemic brain injury and its mechanism of action. Methods Twenty-four healthy adult SD male rats were prepared by bolt plugging method to prepare MCAO models,and randomly divided into sham surgery group ( Sham ) , model group ( MCAO ) , and SAL administration group (MCAO + SAL) ,and the concentration of SAL was 50 mg • kg ~ , with a continuous administration for six days. Western blot was used to detect the protein expression of ICAM-1, VCAM-1 , E-se-lectin,and P-selectin in injured brain tissue of rats. In vitro cell experiments using HUVECs were subjected to different concentrations of salidroside (0. 1,1,10 jjunol • L ) and LPS (100

Evaluation of platelet indices and pro-inflammatory cytokines in type 2 diabetic patients with retinopathy

SUMMARY OBJECTIVE: The aim of this study was to investigate whether platelet parameters and pro-inflammatory cytokines associated with platelet activation could be surrogate markers of the diabetic retinopathy stages in type 2 diabetic patients. METHODS: This prospective case-control study included 108 type 2 diabetes mellitus patients and 48 healthy controls. After fundoscopic examination, patients were divided into three groups: no retinopathy, nonproliferative diabetic retinopathy, or proliferative retinopathy. Platelet selectin, interleukin-1alpha, and interleukin-6 values were measured by the enzyme-linked immunosorbent assay method. Homeostatic Model Assessment for Insulin Resistance formula was used to assess insulin resistance in patients. RESULTS: Mean platelet volume was lower and interleukin-1alpha was higher in the patients compared to the healthy controls (p=0.046 and p<0.001, respectively). In addition, a positive correlation between the platelet distribution width and HbA1C levels was observed in the patients (r=0.334, p<0.001). CONCLUSION: In the studies evaluating the utility of platelet indices and the associated cytokines in diabetic retinopathy, there is a need for the standardization of the measurements. All medications that can affect platelet activation should be taken into consideration.

Clinical value of combined detection of thrombus precursor protein and P-selectin in the diagnosis of acute coronary syndrome / Valor clínico de la detección combinada de proteína precursora de trombo y selectina P en el diagnóstico del síndrome coronario agudo

Abstract Acute coronary syndrome (ACS), including acute myocardial infarction (AMI) and unstable angina (UA), is the most threatening and lethal form of coronary heart disease. ACS has an abrupt onset and rapid development, which may lead to fatal conditions at any time. Thus, it is never too early to detect and diagnose patients with ACS. The objective of this work was to explore the significance of the combined detection of plasma thrombus precursor protein (TpP) and serum P-selectin (Ps), in the detection and diagnosis of patients with early ACS. A total of 126 subjects were included in the study, 64 ACS patients, 30 individuals with stable angina (SA) and 32 healthy persons who were selected as the control groups. There were no differences in gender, age, ethnicity, or blood glucolipid levels among the groups. Enzyme linked immunosorbent assay (Elisa) was used to quantitatively determine the plasma levels of TpP and Ps. The levels of the two biomarkers in the case group were significantly higher than those in the control groups. Among the ACS patients, the levels of TpP and Ps were higher in AMI patients than in the UA patients. In addition, there was no significant differences in the levels of Ps between SA patients and healthy persons. In conclusion, plasma TpP and serum Ps are remarkably increased in patients with ACS. Therefore, TpP and Ps may serve as ACS indicators, and their measurement may provide a support for an early clinical identification of ACS.

Resumen El síndrome coronario agudo (SCA), que incluye el infarto agudo de miocardio (IAM) y la angina inestable (AI), es la forma más amenazante y letal de enfermedad coronaria. El SCA tiene un inicio abrupto y un desarrollo rápido, lo que puede conducir a condiciones fatales en cualquier momento. Por lo tanto, nunca es demasiado pronto para detectar y diagnosticar pacientes con SCA. El objetivo de este trabajo fue explorar la importancia de la detección combinada de la proteína precursora de trombos plasmáticos (TpP) y la selectina P sérica (Ps), en la detección y diagnóstico de pacientes con SCA precoz. Se incluyeron en el estudio un total de 126 sujetos, 64 pacientes con SCA, 30 individuos con angina estable (AE) y 32 personas sanas que fueron seleccionadas como grupos de control. No hubo diferencias en el género, la edad, el origen étnico o los niveles de glucolípidos en sangre entre los grupos. Se usó el ensayo inmunoabsorbente ligado a enzimas (Elisa) para determinar cuantitativamente los niveles plasmáticos de TpP y Ps. Los niveles de los dos biomarcadores en el grupo de casos (SCA) fueron significativamente más altos que los de los grupos de control. Entre los pacientes con SCA, los niveles de TpP y Ps fueron más altos en los pacientes con IAM que en los pacientes con AI. Además, no hubo diferencias significativas en los niveles de Ps entre pacientes con SA y personas sanas. En conclusión, la TpP plasmática y la Ps sérica están notablemente aumentadas en pacientes con SCA. Por lo tanto, TpP y Ps pueden servir como indicadores de SCA y su medición puede proporcionar un apoyo para una identificación clínica temprana de SCA.

Fucoidan-functionalized activated platelet-hitchhiking micelles simultaneously track tumor cells and remodel the immunosuppressive microenvironment for efficient metastatic cancer treatment

Tumor metastasis is responsible for most mortality in cancer patients, and remains a challenge in clinical cancer treatment. Platelets can be recruited and activated by tumor cells, then adhere to circulating tumor cells (CTCs) and assist tumor cells extravasate in distant organs. Therefore, nanoparticles specially hitchhiking on activated platelets are considered to have excellent targeting ability for primary tumor, CTCs and metastasis in distant organs. However, the activated tumor-homing platelets will release transforming growth factor-β (TGF-β), which promotes tumor metastasis and forms immunosuppressive microenvironment. Therefore, a multitalent strategy is needed to balance the accurate tumor tracking and alleviate the immunosuppressive signals. In this study, a fucoidan-functionalized micelle (FD/DOX) was constructed, which could efficiently adhere to activated platelets through P-selectin. Compared with the micelle without P-selectin targeting effect, FD/DOX had increased distribution in both tumor tissue and metastasis niche, and exhibited excellent anti-tumor and anti-metastasis efficacy on 4T1 spontaneous metastasis model. In addition, due to the contribution of fucoidan, FD/DOX treatment was confirmed to inhibit the expression of TGF-β, thereby stimulating anti-tumor immune response and reversing the immunosuppressive microenvironment. The fucoidan-functionalized activated platelets-hitchhiking micelle was promising for the metastatic cancer treatment.

Correlation between P-selectin, thrombopoietin and severity of glioma / 中国医师进修杂志

Objective:To analyze the expression of P-selectin and thrombopoietin (TPO) in patients with glioma, and explore their correlation with severity of disease.Methods:One hundred and six patients with glioma who were treated in the Third People's Hospital of Dalian City from June 2017 to June 2019 were selected as the observation group, and 50 physical examination person in the same period were selected as the healthy control group. The clinic data of patients in two groups were analyzed.Results:The serum P-selectin and TPO levels in the observation group were significantly higher than those in the healthy control group: (62.35 ± 16.71) μg/L vs. (25.42 ± 9.18) μg/L, (12.64 ± 3.26) μg/L vs. (6.93 ± 1.77) μg/L ( P<0.01). In patients with different severity of glioma, serum P-selectin and TPO levels in the high-grade group were significantly higher than those in the low-level group: (65.14 ± 17.19) μg/L vs. (53.71 ± 15.26) μg/L, (14.57 ± 3.38) μg/L vs. (9.04 ± 1.97) μg/L ( P<0.01). Serum P-selectin and TPO levels in patients with glioma after treatment were significantly lower than those before treatment: (57.28 ± 16.22) μg/L vs. (62.35 ± 16.71) μg/L, (10.85 ± 2.97) μg/L vs. (12.64 ± 3.26) μg/L ( P<0.01). Spearman correlation analysis result showed that there was a significant positive correlation between serum P-selectin, TPO levels and WHO classification in patients with glioma ( r = 0.417 and 0.361, P<0.05). The results of receiver operating characteristic (ROC) curve analysis showed that the area under curve (AUC) of serum P-selectin in the diagnosis of glioma was 0.859 (95% CI 0.794 to 0.910, P<0.01), the sensitivity was 90.00%, and the specificity was 74.53%. The ROC curve analysis result showed that the AUC of serum TPO in the diagnosis of glioma was 0.720 (95% CI 0.643 to 0.789, P<0.01), the sensitivity was 69.81%, and the specificity was 72.00%. Conclusions:Serum P-selectin and TPO are abnormally expressed in glioma patients, and their level changes are related to the severity of the disease.

A hiperemia reativa correlaciona-se com presença de sepse e degradação de glicocálix na unidade de terapia intensiva: um estudo de coorte prospectiva / Reactive hyperemia correlates with the presence of sepsis and glycocalyx degradation in the intensive care unit: a prospective cohort study

RESUMO Objetivo: Investigar se a hiperemia reativa correlaciona-se com marcadores de disfunção endotelial e pode ser utilizada para identificar sepse na doença crítica. Métodos: Trata-se de estudo prospectivo em uma coorte de pacientes críticos. A disfunção endotelial foi avaliada quando da admissão, por meio da quantificação de hiperemia por tonometria arterial periférica e níveis plasmáticos de endotelina 1, E-selectina solúvel, endocana e sindecano 1. Os pacientes sépticos foram comparados com pacientes sem evidência de infecção. Resultados: Cinquenta e oito pacientes sépticos foram comparados com 28 controle. O logaritmo natural da tonometria arterial periférica teve correlação negativa com comorbidades cardiovasculares, severidade da doença e níveis plasmáticos de E-selectina solúvel (p = 0,024) e sindecano 1 (p < 0,001). O logaritmo natural da tonometria arterial periférica foi mais baixo nos pacientes sépticos quando comparado com os de pacientes controle (0,53 ± 0,48 versus 0,69 ± 0,42, respectivamente) e, quando ajustado à idade, o modelo multivariado predisse que cada 0,1 de diminuição em unidades de logaritmo natural da tonometria arterial periférica levou a aumento de 14,6% na probabilidade de infecção. Conclusão: A hiperemia reativa avaliada por tonometria arterial periférica tem estreita relação com E-selectina solúvel e sindecano 1, o que sugere associação entre ativação endotelial, degradação de glicocálix e reatividade vascular. A hiperemia reativa por tonometria arterial periférica parece estar comprometida em pacientes críticos, especialmente os com sepse.

Abstract Objective: To investigate whether reactive hyperemia measured by peripheral arterial tonometry correlates with markers of endothelial dysfunction and may be used to identify sepsis in critical illness. Methods: A prospective study was performed using a cohort of critically ill patients. Endothelial dysfunction was assessed on admission by quantifying reactive hyperemia-peripheral arterial tonometry and plasma levels of endothelin-1, soluble E-selectin, endocan and syndecan-1. Septic patients were compared to patients without evidence of infection. Results: Fifty-eight septic patients were compared to 28 controls. The natural logarithm of reactive hyperemia-peripheral arterial tonometry was negatively correlated with cardiovascular comorbidities, disease severity and plasma levels of soluble E-selectin (p = 0.024) and syndecan-1 (p < 0.001). The natural logarithm of reactive hyperemia-peripheral arterial tonometry was lower in septic patients than in controls (0.53 ± 0.48 versus 0.69 ± 0.42, respectively). When adjusted for age, the multivariable model predicted that each 0.1-unit decrease in natural logarithm of reactive hyperemia-peripheral arterial tonometry increased the odds for infection by 14.6%. m. Conclusion: Reactive hyperemia-peripheral arterial tonometry is closely related to soluble E-selectin and syndecan-1, suggesting an association between endothelial activation, glycocalyx degradation and vascular reactivity. Reactive hyperemia-peripheral arterial tonometry appears to be compromised in critically ill patients, especially those with sepsis.

Adhesion molecules before and after propylthiouracil in patients with subclinical hyperthyroidism

SUMMARY OBJECTIVE This study aimed to investigate the effect of propylthiouracil treatment on adhesion molecules in patients with subclinical hyperthyroidism. METHODS In this study, a total of 168 patients diagnosed with subclinical hyperthyroidism were treated with propylthiouracil for one year. The levels of adhesion molecules, consisting of sICAM-1, sVCAM-1, and sE-Selectin, before and after the treatment were measured and compared. These results were compared with the levels of 148 healthy controls who received a placebo. RESULTS sICAM-1 levels were significantly higher in subclinical hyperthyroidism patients than in healthy controls (*pa=0.000). sICAM-1 levels were significantly decreased after the treatment (**pb=0.000). Despite this decrease in patients with subclinical hyperthyroidism, it did not decrease to the level of the control group. sVCAM-1 did not change before and after propylthiouracil treatment. The level of sE-selectin was similar to that of the pretreatment control group, but it did not have statistical significance, although it increased after the treatment (**pb=0.004). CONCLUSION The sICAM level was significantly higher than the pretreatment values and decreased after the propylthiouracil treatment. However, further studies are needed to reduce the risk of atherosclerosis and cancer in patients with subclinical hyperthyroidism.

RESUMO ANTECEDENTES O objetivo deste estudo foi investigar o efeito do tratamento com propiltiouracil nas moléculas de adesão em pacientes com hipertireoidismo subclínico. MÉTODOS Neste estudo, 168 pacientes diagnosticados com hipertireoidismo subclínico foram tratados com propiltiouracil por um ano. Os níveis de moléculas de adesão, especificamente sICAM-1, sVCAM-1 e sE-Selectina, antes e após o tratamento foram medidos e comparados. Esses resultados foram comparados com os níveis de 148 indivíduos saudáveis no grupo de controle que receberam um placebo. RESULTADOS Os níveis de sICAM-1 foram significativamente maiores em pacientes com hipertireoidismo subclínico do que nos controles saudáveis (*pa=0,000). Os níveis de sICAM-1 diminuíram significativamente após o tratamento (**pb=0,000). Apesar dessa diminuição em pacientes com hipertireoidismo subclínico, ela não diminuiu para o nível do grupo controle. O sVCAM-1 não se alterou antes e após o tratamento com propiltiouracil. O nível de sE-Selectina foi semelhante ao do grupo de controle pré-tratamento, mas não apresentou significância estatística, embora tenha aumentado após o tratamento (** pb = 0,004). CONCLUSÃO O nível de sICAM foi significativamente superior aos valores pré-tratamento e diminuiu após o tratamento com propilciliouracil. No entanto, mais estudos são necessários para reduzir o risco de aterosclerose e câncer em pacientes com hipertireoidismo subclínico.

Expression of L-Selectin in Peripheral Blood Leukocytes of Crossbred Cows Affected with Subclinical Mastitis

L-Selectin (SELL) linked with innate immune mechanism involved in neutrophil migration through endothelium to the site of inflammation. Early recruitment of neutrophils at the site of infection is essential to counteract infection at the earliest in conditions like sub-clinical mastitis (SCM). The present study was framed to evaluate the expression pattern of SELL in naturally occurring SCM in crossbred animals using real time PCR technique. Analysis of data on total leukocyte count indicated leucocytosis condition in SCM affected crossbred cows. Relative expression of SELL on peripheral blood leukocytes revealed a significant 3.16 folds down regulation in SCM affected cows when compared with healthy crossbred cows (P<0.05). The possible reason for leukocytosis in SCM animals might be due to down regulation of SELL on leukocytes reducing their ability to transmigrate through blood vessel to infection site. The result of present study revealed a definite role of SELL in SCM which could be explored for therapeutic aspects in near future

Select-in and select-out strategy in military psychological selection / 第二军医大学学报

Select-in and select-out are two completely different strategies of military psychological selection. The two strategies vary from each other theoretically and practically. Select-in is a process of predicting job performance based on person-job fit theory and competency theory. Psychological selection of military officers in Germany is a typical selectin selection. Select-out is actually a kind of physiological and psychological screening. Select-out psychological selection aims at screening out retarded or mentally ill candidates. Psychological selection for Chinese recruits is a typical select-out selection. Select-in and select-out are different in test items and test administration. Three factors should be taken into account in the trade-off between select-in and select-out: Selection objects, number of candidates and admission ratio, and cost-benefit ratio. Select-in and select-out can be merged perfectly, which can be seen in Subscreen of US submarine. In practice, selection objects, number of candidates to admission ratio, and cost-benefit ratio suggest that the select-in strategy should be taken as priority. The combination of select-in and select-out can also be used in the large-scale personnel selection in the army.

Diagnostic value of lung injury biomarkers in neonatal acute respiratory distress syndrome / 国际儿科学杂志

Objective@#To investigate the role of E-selectin, Clara cell secretory protein 16 (CC-16), and pulmonary surfactant protein A (SP-A) in the diagnosis of neonatal ARDS.@*Methods@#Full-term newborn with ARDS in 9 hospitals of Jiangsu Province from March 1st 2015 to February 29th 2016 were selected as observation group.According to the lung oxygenation of the neonates, they were divided into three groups: mild, moderate and severe.In addition, 60 normal full-term newborns were selected as control group.In the observation group, venous blood samples were taken on the 1st, 3rd and 7th day of diagnosis and the control group within 7 days after birth.The level of E-selectin, CC-16 and SP-A were detected by double antibody sandwich enzyme-linked immunosorbent assay.The changes of the level of E-selectin, CC-16 and SP-A at different time points and in neonatus with different severity of ARDS were compare with control group and correlatively analyzed.@*Results@#The observation group included 60 newborns who met the diagnostic criteria of ARDS with male 38, female 22, day age (7.3 ±3.3) hours, gestational age (39.5 ±1.7) weeks and birth weight (3280 ±577) g. The control group included 60 normal full-term newborns, with male 30, female 30, day age (6.9 ±4.2) hours, gestational age (39.4 ±1.5) weeks and birth weight (3329 ±593) g. There was no significant difference between two groups.The levels of E-selectin[1 d, 3 d, 7 d: (36.36 ±8.32)μg/L, (45.51 ±9.26)μg/L, (57.15 ±6.84)μg/L], CC-16[1 d, 3 d, 7 d: (25.24 ±8.63)mg/L, (48.33±10.83)mg/L, (18.84±10.11)mg/L]and SP-A [1 d, 3 d, 7 d: (58.38±10.31)mg/L, (53.29±11.31)mg/L, (25.99±6.66)mg/L]in the blood of the observation group increased on the first day and reached the peak on the third day, which were significantly higher than those in the control group [E-selectin, CC-16, SP-A: (15.52 ±6.24)μg/L, (11.26 ±5.18)mg/L, (24.30 ±5.27)mg/L] (P<0.05). The levels of E-selectin [mild, moderate, severe are(30.07±6.10)μg/L, (33.39 ±6.64)μg/L, (41.63 ±7.36)μg/L], CC-16 [mild, moderate, severe are(12.61 ±5.80)mg/L, (25.22 ±6.77)mg/L, (30.61 ±4.69)mg/L]and SP-A [mild, moderate, severe are(49.67 ±8.26)mg/L, (7.11 ±7.94)mg/L, (63.19 ±11.45)mg/L]increased gradually in the blood of ARDS neonates with different severity (P<0.05), especially in moderate and severe degree.There was a significant negative correlation between E-selectin (r=-0.629 8), CC-16 (r=-0.679 3), SP-A (r=-0.458 8) and PaO2/FiO2 (P<0.05).@*Conclusion@#The levels of E-selectin, CC-16 and SP-A in the blood of ARDS neonates increased significantly and were closely related to the severity of the disease, which may be a biomarker of neonatal lung injury.

Effect of ticagrelor on plasma P-selectin concentration during acute kidney injury in septic rats / 中华麻醉学杂志

Objective@#To evaluate the effect of ticagrelor on plasma P-selectin (CD62P) concentration during acute kidney injury in septic rats.@*Methods@#Thirty SPF healthy male Sprague-Dawley rats, aged 6-8 weeks, weighing 180-220 g, were divided into 3 groups(n=10 each)using a random number table method: sham operation group (group S), sepsis group (group Sep) and ticagrelor group (group T). Sepsis was induced by cecal ligation and puncture in anesthetized rats.The abdomen was opened after anesthesia induction and then closed after turning the intestines in group S. Ticagrelor 8.6 mg/kg was given through a gastric tube into stomach at 12 h after establishing the model in group T, while the equal volume of distilled water was given instead in S and Sep groups.Blood samples were collected from hearts at 24 h after establishing the model for determination of the concentrations of Scr and plasma CD62P.The rats were then sacrificed, and bilateral renal tissues were taken for examination of pathological changes and for determination of cell apoptosis by fluorescence microscopy after Annexin/V-FITC double staining was performed.@*Results@#Compared with group S, the concentrations of Scr and plasma CD62P, renal Paller score and apoptosis rate of renal cells were significantly increased in Sep and T groups (P<0.05). Compared with group Sep, the concentrations of Scr and plasma CD62P, renal Paller score and apoptosis rate of renal cells were significantly decreased in group T (P<0.05).@*Conclusion@#The mechanism by which ticagrelor reduces acute kidney injury is related to decreasing plasma CD62P concentrations and inhibiting cell apoptosis in septic rats.

Study on MRI of nude mice bearing nasopharyngeal carcinoma metastasis model by using molecular probe USPIO-PEG-sLeX / 实用放射学杂志

Objective To investigate the value of molecular probe USPIO-PEG-sLeX in metastasis model of nasopharyngeal carcinoma. Methods According to the pathological results of transplanted tumors of nude mice with nasopharyngeal carcinoma,the tumor-bearing mice were divided into metastatic group and non-metastatic group.T2 ? values of the transplanted tumors at four different time points were measured before and after the injection of USPIO-PEG-sLeX(t0＝plain scan,t1＝scan immediately after enhancement,t2＝1 hour post-enhancement scan,t3＝2 hours post-enhancement scan).ΔT2 ? and enhancing rates at t1 ,t2,t3 were calculated.Results The plain T2 ? values of the metastatic group and the non-metastatic group were 22.25±8.08 and 27.01±9.45,respectively.There was no significant difference between the two groups at t0 (P＞0.05).The T2 ? values at t1,t2 and t3 were 11.57±4.02 and 24.82±7.84,10.09±4.88 and 24.15±8.74,12.46±5.63,23.42±7.12 respectively in the metastatic and non-metastatic groups,differences were statistically significant (P values were 0.005,0.008 and 0.01 9,respectively).ΔT2 ? values at time t1 ,t2 and t3 in nude mice in the metastatic and non-metastatic groups were 10.69±6.23,3.86±2.20,12.1 7±8.67 and 2.87±1.37,9.80±3.03,4.32±2.28 respectively.The differences were statistically significant (P values were 0.027,0.048 and 0.043,respectively).The enhancement rates at t1,t2 and t3 in nude mice in metastatic and non-metastatic groups were 45.98±14.03,7.10±5.18,5 1.1 5±22.70 and 1 1.04±6.01 ,44.05 ±13.92,12.09 ±7.54,respectively,with statistically significant differences (P values were 0.001,0.005 and 0.007,respectively).After two-way repeated-measures analysis of variance,there was a statistically significant difference in T2 ? values between the metastatic and non-metastatic groups (P＝0.02＜0.05).There was a statistically significant difference in T2 ? values at different times (P＝0.001＜0.05).There was an interaction between the metastatic and non-metastatic groups and the scan time (P＝0.043＜0.05).Conclusion USPIO-PEG-sLeX molecular probe can non- invasively monitor E-selectin expression,and has a good application prospect in monitoring the metastasis of nasopharyngeal carcino-ma xenograft models.

Clinical value of peripheral blood CD62P and CA153 in diagnosis of breast cancer / 中国医师杂志

Objective To study the expression of CD62P and carbohydrate antigen 153 (CA153) in peripheral blood of patients with breast cancer, and to explore the value of CD62P and CA153 in the di-agnosis of breast cancer. Methods The CD62P ratio in peripheral blood of 60 patients with breast cancer ( breast cancer group) , 52 patients with breast fibroma ( fibroma group) and 25 healthy volunteers ( control group) was detected by flow cytometry ( FCM) . The serum CA153 level was detected by electro chemilumi-nescence ( ECLIA) , and the relationship between their expression levels and clinicopathological factors of breast cancer patients was analyzed. The sensitivity and specificity of serum CD62P, CA153 and their com-bination in the diagnosis of breast cancer were analyzed by receiver operating characteristic ( ROC) curve. Results ⑴ The expression levels of CD62P and CA153 in breast cancer group were significantly higher than those in fibroma group and control group (P<0. 05), but with no significant difference between fibro-ma group and control group (P>0. 05). ⑵The expression levels of CA153 and CD62P in peripheral blood of breast cancer group were correlated with clinical stage and lymphatic metastasis (all P<0. 05), and the expression levels of CA153 and CD62P were positively correlated (r=0. 514, P<0. 05). ⑶The sensitivity and specificity of combined detection of CD62P and CA153 for breast cancer were higher than those of single detection. Conclusions CD62P is highly expressed in peripheral blood of patients with breast cancer, which may be a new marker for the diagnosis of breast cancer.

Expression and clinical significance of P-selectin and HPA in benign and malignant hydatidform mole tissues / 临床与实验病理学杂志

Purpose To investigate the expression characteristics and significance of P-selectin and HPA in benign and malignant hydatidform mole tissues. Methods By using immunohistochemical technique SP and RT-PCR, the expression of Pselectin and HPA was detected in 40 cases of benign hydatidiform mole tissues, and 12 malignant hydatidiform mole tissues.Meanwhile, 40 cases of normal placental villi tissues were observed. Results The protein positive rate and protein relative quantity expression and the mRNA relative quantity expression of P-selectin and HPA were gradually increasing in normal placenta villi tissues, benign hydatidiform mole tissues, and malignant hydatidiform mole tissues. The differences between groups were statistically significant (all P<0.05). The expression of P-selectin and HPA showed positive correlation (all P<0.05) in benign and malignant hydatidform mole tissues. Conclusion The over-expression of P-selectin and HPA promotes the occurrence and development of hydatidform mole. The detection of the expression levels of P-selectin and HPA is of great significance for the differential diagnosis and prognosis assessment of benign and malignant hydatidform mole. It could become a biological predictor of malignant development of hydatidform mole.

The role of E-selectin and P-selectin in children with severe Mycoplasma pneumoniae pneumonia / 国际儿科学杂志

Severe mycoplasma pneumoniae pneumonia (SMPP) cause severe lung and multiple system organs demage,but its pathogenesis is unclear.With the in-depth study,it is widely recognized that the immune mechanism plays an important role in pathogenesis of SMPP.Selectin is an important adhesion molecule that participates in many physiological and pathological processes,such as inflammation and immune response,coagulation and thrombosis.This paper intends to explore the possible role of e-selectin and p-selectin in the pathogenesis of severe mycoplasma pneumoniae pneumonia.

Correlation analysis of plasma N-terminal pro-brain natriuretic peptide, p-selectin and type 2 diabetes mellitus complicated with acute coronary syndrome / 解放军医学杂志

[Abstract] Objective To investigate the relationship between plasma N-terminal pro-brain natriuretic peptide (NT-pro-BNP), P-selectin (PS) and type 2 diabetes mellitus (T2DM) patients with acute coronary syndrome (ACS). Methods Two hundred and twenty-eight patients with chest pain, admitted in the Department of Cardiology of Langfang Traditional Chinese Medicine Hospital and the Affiliated Hospital of North China University of Science and Technology from July 2017 to April 2018, were selected in present study, including 32 patients with T2DM, 124 patients with ACS, and 72 patients with T2DM complicated with ACS (DA group). ELISA was performed to detect the levels of plasma NT-pro-BNP and PS, and venous blood was taken on an empty stomach to complete a general biochemical project. Based on the results of coronary angiography performed by using Judkins method, the Gensini score was used to evaluate the degree of coronary stenosis. The general clinical data of the 3 groups were compared, and logistic regression was performed to analyze the risk factors for ACS in patients with T2DM. Results No statistical difference existed in gender, history of hypertension, smoking, body mass index, age, and creatinine among the three groups; The levels of low-density lipoprotein cholesterol and triglyceride were higher in DA group [(3.16±0.98)mmol/L and (2.21±1.36)mmol/L] than in T2DM and ACS group [(2.83±0.91)mmol/L, (1.65±1.05)mmol/L and (2.84±0.92)mmol/L, (1.68±0.97)mmol/L] with significant difference (P<0.05). The left ventricular ejection fraction was lower in DA group (58.97±7.35)% than in T2DM and ACS groups [(63.48±7.37)% and (61.26±7.68)%, respectively] with statistically significant difference (P<0.01). The PS was higher in DA group (48.30±13.61)ng/L than in ACS group (38.87±9.12)ng/L, and in ACS group than in T2DM group (21.46±12.30)ng/L; The C-reactive protein was higher in DA group [(27.63±11.87)mg/L] than in ACS group (20.21±9.32)mg/L, and in ACS group than in T2DM group [(10.30±4.22)mg/L]; The NT-pro-BNP M(Q1, Q3) was higher in DA group [419(154, 1350)pg/ml] than in ACS group [120(43, 416)pg/ml], and in ACS group than in T2DM group [22(12, 54)pg/ml]; The Gensini scores was higher in DA group (138.39±88.31) than in ACS group (82.12±63.08), and in ACS group than in T2DM group (39.98±32.12), all the differences listed above were statistically significant (P<0.01). It had been confirmed by multivariate logistic regression analysis that the levels of PS and high-sensitivity C-reactive protein were the risk factors for ACS in patients with DM, their OR estimates were 1.138 (95%CI 1.089-1.990, P<0.01) and 1.656 (95%CI 1.189~2.307, P<0.01), respectively. Conclusion High levels of PS and high-sensitivity C-reactive protein are the independent risk factors for ACS in patients with T2DM. NT-pro-BNP was not associated with ACS in patients with T2DM.

Effect of ticagrelor on plasma P-selectin concentration during acute kidney injury in septic rats / 中华麻醉学杂志

Objective To evaluate the effect of ticagrelor on plasma P-selectin(CD62P)concentra-tion during acute kidney injury in septic rats.Methods Thirty SPF healthy male Sprague-Dawley rats,aged 6-8 weeks,weighing 180-220 g,were divided into 3 groups(n＝10 each)using a random number table method: sham operation group(group S),sepsis group(group Sep)and ticagrelor group(group T).Sepsis was induced by cecal ligation and puncture in anesthetized rats.The abdomen was opened after anesthesia in-duction and then closed after turning the intestines in group S.Ticagrelor 8.6 mg/kg was given through a gas-tric tube into stomach at 12 h after establishing the model in group T,while the equal volume of distilled wa-ter was given instead in S and Sep groups.Blood samples were collected from hearts at 24 h after establishing the model for determination of the concentrations of Scr and plasma CD62P.The rats were then sacrificed,and bilateral renal tissues were taken for examination of pathological changes and for determination of cell ap-optosis by fluorescence microscopy after Annexin/V-FITC double staining was performed.Results Compared with group S,the concentrations of Scr and plasma CD62P,renal Paller score and apoptosis rate of renal cells were significantly increased in Sep and T groups(P＜0.05).Compared with group Sep,the concentra-tions of Scr and plasma CD62P,renal Paller score and apoptosis rate of renal cells were significantly de-creased in group T(P＜0.05).Conclusion The mechanism by which ticagrelor reduces acute kidney injury is related to decreasing plasma CD62P concentrations and inhibiting cell apoptosis in septic rats.

Periodontal status of adult subjects in relation to other local factors in Jazan region, Saudi Arabia

Background: Information about the distribution patterns of periodontal disease and the possible existence ofhigh-risk groups among adult population in Jazan region is scarce. Aims: This study was designed to explorethe periodontal status and the effects of socio-demographic characteristics and habits among adult populationliving in Jazan region, Saudi Arabia (SA). Materials and methods: This work was a cross-sectional studyconducted among 204 individuals. This population was composed of 172 males and 32 females with a mean ageof 43.9 years. Structured questionnaire, which included general health status and possible risk factors forperiodontal disease, was used for sampling. Clinical periodontal examination was carried out using the schemeused by the National Institute of Dental and Craniofacial Research. Data was analyzed using Statistical Packagefor Social Sciences software version 20. Results: Approximately 46.1% of population presented moderatepocket depths. The clinical attachment loss of ≤4 mm was 57.8%, and the fair oral hygiene was 40.2%. Theeffects of khat chewing, shammah dipping, and smoking on moderate pocketing were 50%, 47.7%, and 41.9%,respectively. The attachment losses of ≤4 mm were high in khat chewers, shammah dippers, and smokers at63.1%, 68.8%, and 50.1%, respectively. The average poor oral hygiene among groups was high at 53.3%.Severe pocket depth and poor oral hygiene were significantly high among old age groups at 22.2% and 66.7%,respectively. Females showed significantly (p=0.05) higher mild gingivitis and better oral hygiene of 65.7% and68.8%, respectively, compared with those of males. Conclusion: The prevalence of periodontal disease is highdue to associated risk factors, including khat chewing, smoking, and poor oral hygiene. The elderly age groupshowed high levels of periodontal pocketing, attachment loss, and poor oral hygiene. Females also presentedbetter oral hygiene and periodontal health than those of males.