1.Study on the mechanism of IL-35 in autoimmune diseases
Xu LIU ; Siyu GONG ; Zhikang TIAN ; Junfeng ZHANG
Chinese Journal of Microbiology and Immunology 2021;41(5):411-416
As an anti-inflammatory factor, Interleukin 35 (IL-35) is composed of p35 subunit and EBI3 subunit. IL-35 plays an important role in many diseases, but many mechanisms are not clear. In recent years, it has been found that IL-35 plays an important immunomodulatory role in autoimmune diseases, such as rheumatoid arthritis, inflammatory bowel disease, psoriasis, idiopathic inflammatory myopathy, systemic lupus erythematosus, multiple sclerosis, type I diabetes, pemphigus and primary biliary cirrhosis, etc. This review summarizes the research progress of the mechanism of IL-35 in the above autoimmune diseases.
2.Dexmendetomidine decreases spontaneous contraction of duodenal smooth muscle of rabbits in vitro
Suibing MIAO ; Hua CHEN ; Fang CUI ; Siyu TIAN ; Shuo GU ; Yue GUAN
Chinese Pharmacological Bulletin 2016;32(8):1101-1104
Aim To observe the influences of dexmen-detomidine on the spontaneous contraction of duodenal smooth muscle of rabbits in vitro and explore the mech-anisms.Methods The rabbits ( male or female ) were stunned and the duodenums were isolated .The sam-ples of duodenal segments were connected with tension transducer , which were then put into oxygen saturation Krebs-Henseleit ( K-H) solution .The influences of dex-mendetomidine on amplitude ( AM ) and frequency ( FR ) of duodenal smooth muscle were recorded by BL-420 F biological signal processing system .The cu-mulative dosing method was used to observe the differ-ent concentrations of dexmedetomidine on duodenal smooth muscle spontaneous contraction .Glibenclamide ( Gli) was added to K-H solution before dexmendeto-midine.In the calcium-free K-H solution, calcium chloride and rynodine were added before dexmendeto-midine.The mechanisms of dexmendetomidine were studied .Results ① Dexmendetomidine reduced the amplitude of spontaneous contraction of duodenal smooth muscle in rabbits in a dose-dependent manner ( P<0.05 or P<0.01 ) , while the frequency was not obviously influenced ( P >0.05 ) .② Gli ( P <0.05 ) partly abolished the inhibitory effects of dexmendetomi-dine on duodenal smooth muscle .③ Dexmendetomi-dine inhibited the contraction of duodenum smooth muscle induced by calcium chloride ( P <0.05 ) and rynodine ( P<0.05 ) application into calcium-free K-H solution.Conclusion Dexmendetomidine inhibits the spontaneous contraction of duodenal smooth muscle of rabbits in vitro.The mechanisms may be related to ac-tivating ATP sensitive potassium channels , inhibition of the extracellular calcium influx via cell membrane and intracellular calcium release via sarcoplasmic reticulum in duodenal smooth muscle .
3.Investigation of Microglia Activation and Inflammatory Cytokine Changes in Experimental Rabbits After Spinal Cord Ischemia Reperfusion
Yunlu WANG ; Lei TIAN ; Shiyao LIU ; Zhigao MA ; Siyu HOU ; Yanwei YANG ; Huixian LI ; Mu JIN ; Xiuhua DONG ; Jiakai LU ; Weiping CHENG
Chinese Circulation Journal 2017;32(4):395-400
Objective: To observe the activation of microglia and the changing rule of inflammatory cytokine as IL-6, IL-10 and nuclear factor-κB (NF-κB) in experimental rabbits after spinal cord ischemia reperfusion (SCIR) injury in order to provide theoretical basis for post-conditioning time. Methods: Rabbit SCIR injury model was established by thoracic aorta balloon occlusion. 54 New Zealand male adult white rabbits were divided into 9 groups: Sham group (the animals received balloon implantation without occlusion), SCIR-0h group (reperfusion was conducted at 0 hour of spinal cord ischemia), SCIR-1h, -2h, -3h, -8h, -24h,-48h and -72h groups. n=6 in each group. The number of normal and apoptosis neurons, the levels of Iba-1, IL-6, IL-10 and NF-κB in spinal tissue were examined and compared among different groups respectively. Results: The number of normal neuron was decreasing with the extended reperfusion time, TUNEL-positive neuron began to increasing in SCIR-8h group and the peak was reached in SCIR-24h group. The expression of Iba-1 began to elevating in SCIR-2h group and the peak was obtained in SCIR-8h group; NF-κB began to rising in SCIR-3h group and the peak was observed in SCIR-8h group; both IL-6 and IL-10 arrived the peak in SCIR-24h group. The expressions of NF-κB, IL-6 and IL-10 were positively related to Iba-1 level. Conclusion: Microglia activation had dynamic changes in experimental SCIR rabbits and the expression levels of NF-κB, IL-6 and IL-10 were positively to microglia activation; post-conditioning time at front and back to microglia activation may reduce neuron injury.
4.Acute cingulate cortex infarction: a retrospective case series of 21 cases
Siyu DONG ; Mei SUN ; Yufei TIAN ; Hong CHENG
International Journal of Cerebrovascular Diseases 2022;30(7):481-488
Objective:To investigate the clinical manifestations, risk factors and outcomes of patients with acute cingulate cortex (CC) infarction.Methods:Patients with acute CC infarction admitted to the Department of Neurology, the First Affiliated Hospital of Nanjing Medical University from December 2019 to April 2022 were enrolled retrospectively. According to the location of infarction, they were divided into anterior cingulate cortex (ACC) infarction group and posterior cingulate cortex (PCC) infarction group. The clinical manifestations, stroke risk factors, imaging examination and National Institutes of Health Stroke Scale (NIHSS) score of the patients were analyzed. At one month after onset, the modified Rankin Scale was used to evaluate the short-term outcome.Results:A total of 21 patients with acute CC infarction were enrolled, including 12 males (57.14%), aged 67.14±12.36 years (range, 45-89 years). There were 16 patients (76.19%) with ACC infarction, including 13 (81.25%) unilateral CC infarction. The clinical manifestations were mainly apathy, decreased concentration, and executive dysfunction. There were 5 patients (23.81%) with PCC infarction, all with unilateral onset, mainly manifested as memory loss and visual space disorder. Among the 21 patients, 18 (85.71%) had ≥2 vascular risk factors, and 13 patients (61.90%) had ≥3 vascular risk factors, of which hypertension was most common (90.48%); 19 (90.48%) were caused by atherosclerosis, and 2 (9.52%) were caused by cardiogenic embolism. After treatment, the symptoms of both groups were improved significantly, and there was statistical difference in the NIHSS score before and after treatment ( Z=4.07, P<0.01). During the follow-up, 16 patients (76.19%) had a good outcome, 5 (23.81%) had a poor outcome and no death occurred. Conclusions:ACC and PCC infarction mainly showed different forms of cognitive impairment. If the diagnosis and treatment are timely, the overall outcome of CC infarction is good.
5.Research progress on cardiac rehabilitation in elderly patients with coronary heart disease
Lamei YANG ; Shilan LUO ; Mengying TIAN ; Dan ZUO ; Siyu YANG
Chinese Journal of Modern Nursing 2019;25(11):1321-1326
This review explains the concept of cardiac rehabilitation (CR), clarifies the benefits of CR, and analyses the role of nurses in CR, the obstacles and countermeasures in promoting CR, and the specific problems in implementing cardiac rehabilitation in China. It also points out the research direction in the future, and provides the basis for the development of CR nursing model for the elderly in the future.
6.The value of coagulation indicators combined with sequential organ failure assessment in assessing disease severity and prognosis of elderly patients with sepsis
Libing MA ; Siyu TIAN ; Xiaojun YANG
Chinese Critical Care Medicine 2024;36(11):1133-1139
Objective:To explore the value of coagulation indicators and related critical scores in evaluating the severity and prognosis of elderly sepsis patients.Methods:Patients admitted to the intensive care unit (ICU) of General Hospital of Ningxia Medical University aged ≥60 years with a definite diagnosis of sepsis from May 2020 to May 2022 were retrospectively included. General epidemiological data, coagulation indices such as prothrombin time (PT), international normalized ratio (INR), prothrombin activity (PTA), activated partial thromboplastin time (APTT), prothrombin time (TT), fibrinogen (FIB), D-dimer, platelet count (PLT), and other laboratory indices within 24 hours of admission to the ICU, acute physiology and chronic health evaluation Ⅱ (APACHEⅡ), sequential organ failure assessment (SOFA), sepsis-related complications, and 28-day prognosis were collected. Patients were divided into shock and non-shock groups according to whether septic shock occurred or not, and into death and survival groups according to 28 days outcomes, and the differences of each index between the groups were compared. Independent risk factors for septic shock and 28-day death were analyzed by using univariate and multivariate Logistic regression, and the receiver operator characteristic curve (ROC curve) were further plotted to assess the value of independent risk factors in predicting the occurrence of septic shock and 28-day death in elderly patients with sepsis.Results:A total of 295 elderly patients with sepsis were included, 192 (65.08%) developed septic shock, and 126 (42.71%) died at 28 days. Multivariate binary Logistic regression analysis showed that SOFA score and PT-INR were independent risk factors for septic shock and 28-day death in elderly patients with sepsis [septic shock: odds ratio ( OR) and 95% confidence interval (95% CI) were 1.340 (1.186-1.513) and 1.720 (1.235-2.396), respectively; 28-day death: OR and 95% CI were 1.188 (1.044-1.351) and 4.546 (2.613-7.910), respectively, all P < 0.01]. ROC curve analysis showed that SOFA score and PT-INR had certain predictive values for septic shock occurrence and 28-day death in elderly patients with sepsis, and the area under the curve (AUC) for septic shock occurrence were 0.743 and 0.564, respectively. The AUC of 28-day death was 0.711 and 0.651, respectively. The combined predicted AUC was 0.761 and 0.817, the sensitivity was 78.1% and 65.1%, and the specificity was 63.1% and 85.8%, respectively. Conclusion:PT-INR and SOFA score have potential predictive value in the assessment of the severity and prognosis of elderly patients with sepsis, and their combined prediction accuracy is higher.
7.Three-dimensional CT classification of fracture site and injury mechanism of axis ring
Siyu HE ; Qing WANG ; Gangzhou LI ; Gaoju WANG ; Mingsheng TAN ; Jiwei TIAN ; Yong HU ; Peng LIU ; Chao WU ; Yujian HAN ; Xia JIANG
Chinese Journal of Orthopaedics 2020;40(20):1387-1396
Objectives:To observe the anatomical location and mechanism of axis ring fractures (ARF) using 3-D CT scans, and propose a new classification for such fractures.Methods:By reviewing prospectively maintained database collecting ARF from 7 medical centers in China, 202 patients were included in this study. According to anatomical location, ARFs were classified into axis arthrosis fracture (AAF) and axis bony damage (ABD). The axis ring was divided into anterior, middle, and posterior rings, based on the border of the pars interarticularis (or pedicle) of axis. According to the features of ARF and previous study, a new classification was proposed based on the anatomical features of different fracture patterns, which was divided into three types and six subtypes (A1, A2, B1, B2, C1 and C2). The incidence of AAF and ABD and their distribution in different location of axis ring and the new classification, were observed.Results:In 202 patients with ARF, 501 anatomical structures were involved. 288 AAFs were found in 178 patients (288/501, 57%), while 213 ABDs were found in 149 patients (213/501, 43%). In anterior ring, 304 structures (304/501, 61%) were involved in injury, with 225 AAF and 79 ABD. In middle ring, 99 structures (99/501, 20%) were involved in injury, and all of them were ABD. In posterior ring, 98 structures (98/501, 19%) were involved in injury, with 63 AAF and 35 ABD. The anterior ring injuries (61%) were more common than middle (20%) or posterior ring (19%). In anterior ring, AAF (84%) were morecommon than ABD (16%); In middle ring, all the injuries were ABD; In posterior ring, AAFs (64%) were more common than ABD (36%). Type A fractures were featured with pedicle fractures and were identified in 30 patients (30/202, 15%). Type A1 fractures were bilateral pedicle fracture lines symmetrically or asymmetrically and identified in 12 (6%) patients; Type A2 fractures were pedicle fracture lineson one side and inferior articular facet injuries or lamina fractures on the otherside and identified in 18 (9%) patients. Type B fractures were featured with superior articular facet injuries or posterior wall of C2 body fractures on one side and identified in 136 patients (67%). Type B1 fractures were superior articular facet injuries or posterior wall of C2 body fractures on one side and pedicle fracture on the other side and identified in 57 (28%) patients; Type B2 fractures were superior articular facet injuries or posterior wall of C2 body fractures on one side and inferior articular facet injuries or lamina fractures on the otherside and identified in 79 (39%) patients. Type C fractures were featured with bilateral superior articular facet injuries or posterior wall of C2 body fractures and identified in 36 patients (18%). Type C1 fractures were bilateral superior articular facet injuries or posterior wall of C2 body fractures symmetrically and identified in 22 (11%) patients; Type C2 fractures were bilateral superior articular facet injuries or posterior wall of C2 body fractures asymmetrically and identified in 14 (7%) patients.Conclusion:ARF could occur in different anatomical locations, and most of these fractures were caused by hyperextension and axial load on superior articular facet on one or two sides. The new CT classification of ARF with three types and six subtypes might provide all fracture patterns, which could be useful for the choice of proper diagnosis and treatment for such fractures.
8.Prevalence and clinical characteristics of atrial fibrillation in hospitalized patients with coronary artery disease and hypertension: a cross-sectional study from 2008 to 2018
Qian XIN ; Sijin ZHANG ; Chi WANG ; Siyu YAO ; Cuijuan YUN ; Yizhen SUN ; Ziwei HOU ; Miao WANG ; Maoxiang ZHAO ; Lu TIAN ; Yanjie LI ; Zekun FENG ; Hao XUE
Chinese Medical Journal 2023;136(5):588-595
Background::The clinical characteristics of patients with the comorbidities of hypertension and coronary artery disease (HT-CAD) and atrial fibrillation (AF) are largely unknown. This study aimed to investigate the prevalence of AF in patients with HT-CAD and clinical characteristics of patients with both HT-CAD and AF.Methods::This cross-sectional study was conducted in Chinese People’s Liberation Army General Hospital in Beijing, China, and included 20,747 inpatients with HT-CAD with or without AF from August 2008 to July 2018. We examined the overall prevalence, clinical characteristics, comorbidity profiles, treatment patterns, and blood pressure (BP) control of patients with both HT-CAD and AF. Multivariate logistic regression was used to investigate the associations of cardiovascular risk factors with AF in patients with HT-CAD.Results::The overall prevalence of AF in patients with HT-CAD was 4.87% (1011/20,747), and this increased with age; to be specific, the prevalence in women and men increased from 0.78% (2/255) and 1.02% (26/2561) at the age of <50 years to 8.73% (193/2210) and 10.28 % (298/2900) at the age of ≥70 years, respectively. HT-CAD patients who had AF had a higher prevalence of cardiovascular-related comorbidities than those without AF. Multivariate logistic regression showed that age, gender (male), body mass index, heart failure, and chronic kidney disease were independently associated with the risk of AF in patients with HT-CAD. For those with both HT-CAD and AF, 73.49% (743/1011) had a CHA 2DS 2-VASc score of ≥4, and only about half of them had the BP controlled at <140/90 mmHg, which indicated a high risk of thromboembolism and stroke. The use of oral anticoagulation increased during the study period (10.00% [20/200] in 2008 to 2011 vs. 30.06% [159/529] in 2015 to 2018, P < 0.01), but remained at a relatively low level. Conclusions::AF is highly prevalent among patients with HT-CAD. Patients with both HT-CAD and AF have a higher prevalence of cardiovascular-related comorbidities, lower BP control rate, and lower use of oral anticoagulation.
9.The temporal profile of astrocytes and Jak-STAT signal pathway after spinal ischemia and reperfusion injury in rabbits
Yunlu WANG ; Lei TIAN ; Shiyao LIU ; Zhigao MA ; Siyu HOU ; Yanwei YANG ; Huixian LI ; Mu JIN ; Xiuhua DONG ; Jiakai LU ; Weiping CHENG
Chinese Journal of Thoracic and Cardiovascular Surgery 2018;34(2):104-109
Objective To observe the evolution of astrocytes,GDNF,BDNF and Jak-STAT signal pathway after spinal cord ischemia-reperfusion injury in rabbits.Methods Spinal cord ischemia was induced by means of balloon occlusion of the infrarenal aorta for 22 minutes in 54 male New Zealand white rabbits.We assigned rabbits to 9 groups (n =6),one sham group,eight operation groups.The operation process in the sham group was the same as the operation group except the ischemia reperfusion of the spinal cord.At 0 h,1 h,2 h,3 h,8 h,24 h,48 h and 72 h after reperfusion,animals were sarcrificed and the spinal cord was removed for histologic,immunohistochemical study and western blotting.Results Normal neurons were decreased with the extension of reperfusion time.Levels of GFAP increased at 3 h and reached a peak at 48 h after reperfusion.GDNF was increased reaching two peaks after injury,the first peak was at 3 h,the second was at 72 h.BDNF level was increased and peaked at 24 h after reperfusion.The expression of p-STAT3 showed a biphasic pattern which peaked at 1h and 48 h.GFAP,GDNF,BDNF were rare and the level of p-STAT3 could be neglected in sham group.Conclusion Spinal cord ischemia-reperfusion injury could induce the activation of astrocytes,the expression of GDNF,BDNF and the activation of JakSTAT signal pathway.They showed different expression rules in this study.
10.Qualitative research on real experience of clinical nurses using intelligent nursing technology
Lamei YANG ; Shilan LUO ; Siyu YANG ; Mengying TIAN
Chinese Journal of Modern Nursing 2020;26(17):2247-2251
Objective:To get a deep understanding of true feelings of nurses using intelligent nursing technology in intelligent hospital and to provide basis for optimizing the use, management and promotion of intelligent nursing technology.Methods:By using the phenomenological approach of qualitative research, 15 clinical nurses in a Class Ⅲ Grade A hospital (Intelligent Hospital) in Chongqing from April to June 2019 were selected for face-to-face in-depth interviews. Colaizzi analysis was used to analyze the data.Results:The true experience of nurses in the intelligent hospital on intelligent nursing technology was summarized into four main themes, including the experience of intelligent nursing, lack of adequate equipment and technical support, some time needed for learning and mastering new technologies and full of earnest expectations for intelligent nursing technology.Conclusions:The managers of intelligent hospitals should pay attention to the real feeling of nurses using intelligent nursing technology, solve the problems encountered in use in time, do a good job in communication, feedback and training and optimize the evaluation index of nursing quality in time.