Using human acidic fibroblast growth factor Specific primers we tested the technique of screening cDNA library by a DNA polymerase chain reaction.With the method,we have suc-cessfully isolated encoding region cDNA of human interleukin 8 from both human dermal fibrob-last and PMA stimulated U937 cell cDNA libraries.

Objective To study the value of spiral CT in diagnosing renal cell carcinoma(RCC) and to evaluate the correlation of CT findings with histopathologie features in RCC. Methods 279 cases with RCC proven by surgery and pathology underwent plain and contrast-enhanced CT examinations. The clinic characteristics and CT findings were analyzed statistically and compared with surgical results. Results 90.32% lesions showed medium or obvious enhancement on contrast-enhanced CT,with the exception of granule cells for enhanced uniform, the other cell type of RCC showed heterogeneous enhancement. 32.26% of tumors was of more or less short-burres (χ~2 = 38.2,P<0.01) ,and the there was significant relationship between pathological signs of short burr and the renal capsule involved by tumors. CT qualitative diagnostic rate was 91.40%. CT staging and pathologic staging were of the correla-tive coefficient of 0. 84, while there was not obviously correlation between CT classification of RCC and cancer cell types(P>0.05). Conclusion Spiral CT can better show characteristics of RCC, that can improve the diagnostic accuracy and staging aility for RCC.

Objective To study a technology for separating water from gas under microgravity in long-term manned space flight.Methods Several kinds of mixture of water and oxygen were separated by a new water/gas separating matrix and the action of gravity on the process was studied.Results The water/gas separator worked well in the range of gas flow below 2 500 mL/min and water flow below 4～6 L/h.A mixture of gas and water was separated into gas containing no water containing less than 1% gas.The phenomenon of a little oxygen existing in the water flow was explained.It was also found that gravity has nothing to do with the separation.Conclusion Hydrophilic porous membrane can be used to separate water from gas,and further works were continue needed to study the process and to resolve a few problems about water/gas separation under microgravity.

Effect of strophanthidin (Str) on intracellular calcium concentration ([Ca2+]i) was investigated on isolated ventricular myocytes of guinea pig. Single ventricular myocytes were obtained by enzymatic dissociation technique. Fluorescent signal of [Ca2+]i was detected with confocal microscopy after incubation of cardiomycytes in Tyrode's solution with Fluo3-AM. The result showed that Str increased [Ca2+]i in a concentration-dependent manner. The ventricular myocytes began to round-up into a contracture state once the peak level of [Ca2+]i was achieved in the presence of Str (10 μmol·L-1), but remained no change in the presence of Str (1 and 100 nmol·L-1). Tetrodotoxin (TTX), nisodipine, and high concentration of extracellular Ca2+ changed the response of cardiomycytes to Str (1 and 100 nmol·L-1), but had no obvious effects on the action of Str (10 μmol·L-1). The elevation of [Ca2+]i caused by Str at all of the detected concentrations was partially antagonized by rynodine (10 μmol·L-1) or the removal of Ca2+ from Tyrode's solution. In Na+, K+-free Tyrode's solution, the response of cardiomycytes in [Ca2+]i elevation to Str (10 μmol·L-1) was attenuated, while remained no change to Str (1 and 100 nmol·L-1). TTX, nisodipine, and high concentration of extracellular Ca2+ changed the response of cardiomycytes to Str at all of the detected concentrations in Na+, K+-free Tyrode's solution. The study suggests that the elevation of [Ca2+]i by Str at the low (nomomolar) concentrations is partially mediated by the extracellular calcium influx through Ca2+ channel or a "slip mode conductance" of TTX sensitive Na+ channel. While the effect of Str at high (micromolar) concentrations was mainly due to the inhibition of Na+, K+-ATPase. Directly triggering the release of intracellular Ca2+ from sarcoplasmic reticulum (SR) by Str may be also involved in the mechanism of [Ca2+]i elevation.

Aim By establishing mouse acute myocardial infarction model,to observe the protection of isoflavones on ischemic myocardium and research the mechanism.Methods Mouse acute myocardial infarction model was established by ligating the left anterior descending(LAD)coronary artery.Danshen was used as the positive control.The effect of isoflavones on myocardial infarct area,serum myocardium creatase and serum levels of SOD and MDA was observed.By Real Time PCR,it was found that isoflavones could affect the expression of β-adrenergic receptor kinase(β-ARK_1).Results Isflovones could obviously reduce the myocardial infarct area and lower the levels of serum myocardial creatase and MDA.It could downregulate the expression of β-ARK_1 as the doses are increased.Conclusions Isoflavones can protect the myocardium of acute myocardial infarction mouse.The mechanism is related to the reduction of the oxidative damage,and the downregulation of the expression of β-ARK_1.

Objective:To investigate the diagnostic and early-warning value of laboratory test indicators for sepsis-induced myocardial injury (SIMD).Methods:The clinical data of 183 patients with sepsis admitted to the Department of Emergency and Critical Care Medicine of Guangdong Provincial People's Hospital from August 2016 to October 2020 were collected. The patient's age, gender, past medical history, vital signs and pathogen culture results were extracted. Cardiac function, blood routine, liver function, renal function, inflammatory factors, coagulation function, APACHE Ⅱ and SOFA scores were recorded at enrollment and 72 h after admission. SIMD was defined as cTnT ≥300 pg/mL and NT-proBNP ≥1243 pg/mL twice in 72 h intervals between enrolled cases, and the early-warning factors of patients with SIMD were analyzed. The differences in various indicators between the two groups were compared, and Logistic regression analysis was used to explore the diagnostic efficacy of cTnT and NT-proBNP combined for SIMD, and the correlation between PCT/PLT ratio and the occurrence of SIMD.Results:Among 250 patients, 67 patients were excluded for lack of the main indicators, and 183 patients (including 62 patients with history of cardiac disease) were enrolled finally. Among 183 patients with sepsis, 105 patients (57.38%) with cTNT ≥300 pg/mL and NT-proBNP ≥1 243 pg/mL, were diagnosed as myocardial injury; after excluding 62 patients with history of cardiac disease, 59 patients (48.76%) with cTNT ≥300 pg/mL and NT-proBNP ≥1 243 pg/mL were diagnosed as myocardial injury. Logistic regression analysis showed that increased PCT/PLT ratio ( OR=1.585, 95% CI: 1.124-2.237, P=0.009) was an independent risk factor for early-warning of SIMD. The PCT/PLT ratio ( OR= 1.850, 95% CI: 1.103-3.102, P=0.020) could stably predict the occurrence of SIMD in patients without previous history of heart disease. ROC curve analysis showed that PCT/PLT ratio could effectively predict the occurrence of SIMD (AUC=0.693, 95% CI: 0.617-0.769, P<0.001), the optimal cut-off value was 0.177 (sensitivity: 65.7%, specificity: 66.7%). The PCT/PLT ratio was still effective in predicting the occurrence of SIMD after excluding patients with previous history of heart disease (AUC=0.733, 95% CI: 0.643-0.823, P<0.001), and the optimal cut-off value was 0.429 (sensitivity: 55.9%, specificity: 83.9%). Conclusions:The combination of cTnT and NT-proBNP has certain diagnostic value for SIMD, and the PCT/PLT ratio could warn the occurrence of SIMD.

Objective:To investigate whether stress hyperglycemia (SH) is an independent risk factor for the occurrence and mortality of sepsis-associated encephalopathy (SAE).Methods:From August 2016 to October 2021, sepsis patients admitted to the ICU of Guangdong Provincial People's Hospital were selected as the study subjects. According to whether they developed to SH (RBG>11.1 mmol/L) within 7 days of enrollment, the pat ients were divided into the SH group and the non-SH group for analysis. Logistic regression was used to analyze whether SH was an independent risk factor for SAE occurrence, and ROC curve was used to analyze the predictive value of SH to SAE. Kaplan-Meier curve was used to compare the 90-day survival of SAE patients with or without SH. Cox regression analysis was used to analyze the risk factors of 28-day and 90-day death in SAE patients.Results:A total of 183 sepsis patients were included, including 62 patients in the SH group and 121 in the non-SH group. Logistic regression analysis demonstrated that SH was an independent risk factor for SAE ( OR=4.452, 95% CI: 2.021-9.808, P <0.001). ROC curve demonstrated that SH could accurately predict SAE (AUC=0.831; Sensitivity=78.4%; Specificity=76.8%; and Yoden index=0.553). Kaplan-Meier curve demonstrated that the 90-day survival of SAE patients with SH significantly declined (log-rank test: P<0.01). Cox regression analysis suggested that SH was a risk factor for death at day 28 and day 90 in SAE patients (28 d, HR=2.272, 95% CI: 1.212-4.260, P=0.010; 90 d, HR=2.456, 95% CI: 1.400-4.306, P<0.01). Conclusions:SH is an independent risk factor for SAE and can predict SAE occurrence. SH significantly reduces 90-day survival and increase mortality at 28 and 90 days in SAE patients.

Objective: Analyze the clinical application rule of Chinese patent medicine in cervical radiculopathy (CR) .Method: The clinical real-world data of CR were extracted by using information sharing system of traditional Chinese medicine and clinical research. Six hundred and twenty-eight inpatients and out patients with CR were enrolled from December 2012 to July 2014 in the information system database of Wangjing Hospital. The correlation analyses and mutual information value were recorded for Chinese patent medicine therapy application of all patients by using liquorice software. Complex network diagrams were generated. Result: Yuxuebi capsule and Jingshu granule is the highest frequency in application of Chinese patent medicine. Jingshu granule and Cobamamide for injection were the highest frequency in combined application of Chinese patent medicine and western medicine. Association frequency was 822, mutual information value was 268.07. Biqi capsule and Daiwenjiu cream were the highest frequency in combined application of Chinese patent medicine and topical drugs. Association frequency was 384, mutual information value was1754.76. Conclusion: The basic treating principle for CR was promoting blood circulation and removing blood stasis. The efficacy and safety of combined Chinese patent medicine with other medicine need further research

ObjectiveTo discuss the diagnosis, assessment and rehabilitation for children with cerebral palsy complicated with speech disorder based on the tools of World Health Organization Family of International Classifications (WHO-FICs). MethodsThe diagnosis of speech disorder after cerebral palsy was classified using International Classification of Diseases, 11th Revision (ICD-11). The disorders of speech function were classified using International Classification of Functioning, Disability and Health (ICF). A structured speech function rehabilitation solution was developed based on the International Classification of Health Interventions (ICHIβ-3). ResultsAccording to ICD-11, cerebral palsy was classified as 08 Neurological Disorder, which was further classified as 8D20.0 Spastic Unilateral Cerebral Palsy and 8D20.1 Spastic Bilateral Cerebral Palsy (8D20.10 Spastic Quadriplegic Cerebral Palsy and 8D20.11 Spastic Bilateral Cerebral Palsy), with the speech disorders involving 6A00 Disorders of Intellectual Development, 6A01 Developmental Speech or Language Disorders, MA80 Speech Disturbances, MA81 Speech Dysfluency and MA82 Voice Disturbances. For ICF, the speech disorders mainly involved s1 structures of the nervous system, s3 structures invoved in voice and speech, b3 voice and speech functions, d1 learning and applying knowledge, and environment and individual factors; and could be further classified as b310 voice functions, b320 articulation functions, and b330 fluency and rhythm of speech functions. Based on ICHIβ-3, a rehabilitation solution was developed, involving the areas of body structure and function, activity and participation, and environmental factors. ConclusionBased on ICD-11, ICF and ICHIβ-3, a methodological system of assessment and interventions for speech disorders after cerebral palsy has been systematically constructed, including diagnosis of disease, assessment, intervention and coding of speech disorder.

The previous investigation has proved that their existed pharmacokinetic difference between the different crystal forms of the polymorphic drugs after oral administration. However, no systemic investigations have been made on the change of this pharmacokinetic difference, resulted either from the physiological or from the pathological factors. In this paper, we used polymorphic nimodipine (Nim) as a model drug and investigated the effect of age difference (2- and 9-month old) on the pharmacokinetics after oral delivery in rats. As the results shown, for L-form of Nim (L-Nim), the AUCin 2-month-old rats was 343.68±47.15 ng·h/mL, which is 23.36% higher than that in 9-month-old rats. For H-form of Nim (H-Nim), the AUCin 2-month-old rats was 140.91±19.47 ng·h/mL, which is 54.64% higher than that in 9-month-old rats. The AUCratio between H-Nim and L-Nim was 2.44 in 2-month-old rats and 3.06 in 9-month-old rats. Since age difference could result in unparallelled change of the absorption and bioavailability of the polymorphic drugs, the results in this experiment are of value for further investigation of crystal form selection in clinical trials and rational clinical application of the polymorphic drugs.