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Objective:To investigate the correlation between microRNA-497 (miR-497) expression and invasion and metastasis and prognosis of colorectal cancer (CRC).Methods:The expression of miR-497 in 93 CRC patients (CRC group), 30 colorectal adenoma polyps (colorectal adenomatous polyp group) and 30 healthy patients (normal control group)were detected by real-time fluorescence quantitative polymerase chain reaction (qRT-PCR); meanwhile, the content of serum carcinoembryonic antigen (CEA) was detected by chemiluminescence; After 3 years follow-up, the expression of miR-497 was measured again; the correlation between the expression of miR-497 and the clinicopathological characteristics and prognosis of CRC was analyzed.Results:The expression of miR-497 in CRC group was significantly lower than that at the end of postoperative treatment, adenomatous polyps group and normal control group ( P<0.01), and the content of CEA in CRC group was significantly higher than that at the end of postoperative treatment, adenomatous polyps group and normal control group ( P<0.01); At the end of postoperative treatment, the expression of serum miR-497 in CRC group was lower than that in normal control group ( P<0.05), and the content of serum CEA was higher than that in normal control group ( P<0.05). The diagnosis positive rate of serum miR497 expression in CRC group was significantly higher than that of serum CEA ( P<0.01), and they showed no correlation ( r=0.232, P>0.05). The pre-and post-operative serum miR-497 expression levels in the recurred and metastasis group were significantly lower than those in the no postoperative recurrence and metastasis group ( P<0.01). The preoperative expression of miR-497 was related to the differentiation degree of CRC, tumor node metastasis (TNM) stage, lymph node metastasis, distant metastasis and survival period ( P<0.01), but not with the age, sex, tumor size and location of the patients ( P>0.05). Cox multivariate analysis showed that tumor differentiation, TNM stage, preoperative miR-497 expression, lymph node metastasis and distant metastasis were all independent risk factors influencing prognosis of CRC patients ( P<0.05); The survival rate of 1, 2, 3 years in the miR-497 low expression group was lower than that in the miR-497 high expression group ( P<0.05). Conclusions:The preoperative low serum miR-497 expression levels are closely relative with invasion and metastasis and poor prognosis of CRC, and can be a prognostic indicator of CRC. The reduced postoperative serum miR-497 expression levels may be a predictor of the postoperative recurrence and metastasis of CRC.
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Objective To investigate the risk factors and prognosis of persistent inflammation-immunosuppressive catabolism syndrome (PICS) in malignant tumor patients with lung infection after chemotherapy.Methods A total of 128 malignant tumor patients with pulmonary infection after chemotherapy from January 2014 to January 2018 in Jilin Cancer Hospital were collected.According to whether the patients were complicated with PICS,the patients were divided into the PICS group (44 cases) and the control group (84 cases).The clinical characteristics and prognosis of the two groups were compared,and the risk factors of PICS during hospitalization were analyzed.Results The acute physiology and chronic health evaluation (APACHE) Ⅱ score and sequential organ failure assessment (SOFA) score in the PICS group were higher than those in the control group [(18.6±3.8) vs.(15.9±4.0),t =3.598,P ＜ 0.01;(4.8±1.5) vs.(4.0±1.6),t =2.832,P =0.005].When compared with the control group,the proportion of lung cancer in the PICS group was increased [47.7％ (21/44) vs.23.8％ (20/84),x2 =8.378,P =0.006],and the albumin was decreased [(28.8±3.3) g/L vs.(30.8±2.9) g/L,t =3.695,P ＜ 0.01],the C reactive protein was increased [(60±8) mg/L vs.(45±8) mg/L,t =9.520,P ＜ 0.01],hospital duration was prolonged [(33±7) d vs.(26±7) d,t =4.820,P ＜ 0.01],hospital mortality was increased [22.7％ (10/44) vs.4.8％ (4/84),x2 =9.567,P =0.002].Multiple factor logistic regression analysis showed that the APACHE Ⅱ score ＞ 20,lung cancer and the albumin ＜ 30 g/L were the risk factors for PICS in the malignant tumor patients with lung infection after chemotherapy (all P ＜ 0.05).Conclusion The incidence of PICS in malignant tumor patients with pulmonary infection after chemotherapy is high,and the risk factors for the poor prognosis include APACHE Ⅱ score ＞20,lung cancer and the albumin ＜30 g/L.
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First marketed in Japan in the 1990s, olprinone is a newly developed phosphodiesterase Ⅲ (PDE Ⅲ) inhibitor. It can not only increase cardiac contractility and also reduce peripheral vascular resistance without affecting mean arterial pressure and heart rate. At present, olprinone is mainly used in the treatment of acute heart failure and postoperative acute cardiac insufficiency. Through selectively inhibiting the activity of PDEⅢ and increasing the concentration of cyclic adenosine monophosphate (cAMP) by blocking its degradation, olprinone accelerates the influx of Ca2+in cardiac myocytes, leading to enhancement of myocardial contractility; and on the other hand, decreases the influx of Ca2+in vascular smooth muscle cells, resulting in dilation of peripheral blood vessels. Recently, a considerable amount of research has been conducted on olprinone in terms of pulmonary hypertension, myocardial ischemia/reperfusion (I/R) injury, and arrhythmia. In this review, we summarize the application of olprinione in acute heart failure, pulmonary hypertension, myocardial I/R injury, and arrhythmia, and analyze its application value and related progress in cardiovascular diseases.
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Objective To observe the effects of olprinone on ischemia/reperfusion (I/R) induced myocardial injury in male (Sprague-Dawley, SD rats) and explore its mechanisms. Methods Rats were subjected to a 30-min coronary arterial occlusion followed by 24-hour reperfusion. The survival rats were randomly divided into sham group (n=6), ischemia reperfusion group (I/R group, n=9), ischemia reperfusion+low dose of olprinone group(IR+olprinone-L group, n=6), ischemia reperfusion+medium dose of olprinone group (IR+olprinone-M group, n=6),ischemia reperfusion +high dose of olprinone group (IR+olprinone-H group, n=6). A MAP heart function analysis system was used to measure hemodynamic parameters; TTC staining method was used to detect the myocardial infarct size;24-hour mortality of SD rats was recorded; western blot was used to detect the levels of Caspase-3, Bax,Bcl-2, LC3B/LC3A,Beclin-1. Results Cardiac function in I/R group was lower than that in sham group, which was significantly improved by pretreatment with olprinone (P＜0.01),but systolic arterial pressure (SAP) diastolic arterial pressure (DAP) mean arterial pressure (MAP) mean pressure developed in left ventricle (Pmean) had no significant difference (P＞0.05). The percentage of myocardial infarct size in olprinone-M and olprinone-H group was lower than that in I/R group (P＜0.05).There was no significant difference in mortality among groups within 24 hours. Compared with sham group, the expressions of Caspase-3 and Bax were obviously up-regulated in I/R group (P＜0.01), whereas caspase-3 was down-regulated in olprinone-M group (P＜0.05) and Bax was inhibited by different doses of olprinone (P＜0.05), but the expression of Bcl-2 increased (P＜0.05); furthermore, the ratio of Bcl-2/Bax decreased in I/R group (P＜0.01) and increased with different degrees in different doses of olprinone (P＜0.05). Meanwhile, compared with sham group, the expression of Beclin-1 was up-regulated in I/R group(P＜0.05),and also increased in olprinone-L and olprinone-M groups(P＜0.05), but the ratio of Bcl-2 /Beclin-1 decreased in different doses of olprinone making statistically significant difference only in olprinone-M group (P＜0.05). Moreover, different doses of olprinone elevated the different ratios of LC3B/LC3A (P＜0.05), and this elevated ratio in olprinone-M group at median among groups. Conclusions Olprinone can strengthen the cardiac function after myocardial ischemia/reperfusion injury, without leading to disorders in hemodynamics; by regulating autophagy with anti-apoptotic protein, olprinone can make autophagy to an appropriate level using the mechanism of autophagy to preventing the myocardium from injury.
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Our previous studies have confirmed that morroniside has neuroprotective effects. However, the effects of morroniside on cardiac myocardium remain unknown. Rats were anaesthetized with 10% chloral hydrate (0.35~0.4 mL/kg) and an acute myocardial infarction (AMI) was induced by ligating the anterior descending coronary artery (LAD). Following AMI, morroniside was administered intragastrically for 3 consecutive days at doses of 45, 90 and 180 mg/kg, respectively. Lactate dehydrogenase (LDH) and cardiac troponin T (cTnT) activities in AMI rats in the serum were detected with commercial kits. The expression of IL-6, IL-1β and TNF-α in myocardium was detected by Western blotting analysis. We observed a significant decline in the Q(q) wave amplitude in morroniside-treated rats after 72 h. Additionally, treatment of morroniside decreased the levels of LDH and cTnT in AMI rats. We also observed that morroniside reduced the expression of IL-6, IL-1β and TNF-α in myocardium. Taken together, our findings demonstrate that morroniside had effective anti-inflammatory properties in AMI rats.
Subject(s)
Animals , Rats , Blotting, Western , Chloral Hydrate , Coronary Vessels , Inflammation , Interleukin-6 , L-Lactate Dehydrogenase , Myocardial Infarction , Myocardium , Neuroprotective Agents , Troponin TABSTRACT
Objective To explore the situation of return-to-work (RTW) and its related factors in female injured works. Methods The da-ta of the basic information, counseling record and follow-up record after discharge were collected from social rehabilitation department in our center. The main influencing factors were analyzed by single factor analysis and two classification Logistic regression. Results 232 ob-jects were collected, among which, 149(64.2%) subjects had returned to work, and the median of absence time was 206.5 days. Single factor analysis indicated that their age, marriage, absence time and educational level were not correlated with the outcome of women injured work-ers' employment (P>0.05). However, place of social insurance, household register and injury severity correlated with the outcome (P<0.05). Conclusion Most of the female injured workers can return to work. The severity of injury, along with some system factors influence the RTW of them.
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Objective To observe the effects of Tanshinone Ⅱ A sodium sulfonate (TSS ) on ischemia/reperfusion (I /R) induced cardiac injury in male (Sprague-Dawley,SD ) and explore its mechanisms.Methods Rats were subjected to a 30 min coronary arterial occlusion followed by 24 hours reperfusion.The survival rats were randomly (random number)divided into sham group (Sham group,n =10),ischemia reperfusion group (I /R group,n =10),low dose of TSS group (TSS-L group,n =10), medium dose of TSS group (TSS-Mgroup,n =9),high dose of TSS group (TSS-H group,n =9).A MAP heart function analysis system was used to measure hemodynamic variables,and TTC staining method was used to detect the myocardial infarct size.The levels of Bcl-2,Bax,Caspase-3,Lc3B/Lc3A,Beclin-1 and high mobility group box1 (HMGB1)were detected by western blot method.All data were analyzed by using One-way analysis of variance (ANOVA)(LSD-t test).Results Cardiac function in I /R group was lower than that in Sham group,and that was significantly improved by pretreated with TSS (P 0.05 ).The percentage of myocardial infarct size in TSS pretreatment group was significantly smaller than that in I /R group (P <0.05 ).Compared with Sham group,levels of Caspase-3 and Bax increased,and the Bcl-2 content was reduced obviously in I /R group (P <0.05).TSS pretreatment significantly down-regulated the levels of Caspase-3 and Bax protein (P <0.01).At the same time,the level of Bcl-2 was increased in all TSS pretreatment groups (P <0.01).Compared with Sham group,the ratio of Bcl-2 /Bax in I /R group was lower (P <0.05),and that was elevated in TSS groups (P <0.05 ).The change of autophagy related protein beclin-1 and Lc3B/Lc3A was in similar trend,and the levels of beclin-1 and Lc3B/Lc3A in I /R group were lower than that in Sham group (P <0.05),and those were raised in TSS pretreatment groups (P<0.05).The level of HMGB1 in I /R group was higher than that in Sham group (P <0.05),and compared with I /R group,the level of HMGB1 significantly decreased in TSS pretreatment groups (P <0.01 ). Conclusions The tanshinone ⅡA sodium sulfonate can protect the myocardium from ischemia/reperfusion injury and the mechanism may be attributed to the inhibition of cell apoptosis and activation of cell autophagy.