[ABSTRACT]AIM:Tostudytheeffectsofbaicalin(BC)onglialfibrillaryacidicprotein(GFAP)andnuclear factor-κB ( NF-κB) expression and neuronal apoptosis in juvenile rat hippocampus after status convulsion ( SC) .METH-ODS:One hundred and ninety five juvenile male Sprague-Dawley rats were randomly divided into 3 groups:normal saline pretreatment group (NS group), SC group and SC with BC pretreatment group (BC group).Each of these 3 groups would be subdivided into 5 subgroups sacrificed at 4 h, 12 h, 24 h, 48 h and 72 h after SC.The rat SC model was prepared by lithium-pilocarpine chemical method .The protein expression of GFAP and NF-κB was detected by the method of immuno-histochemistry .The mRNA expression of GFAP was detected by RT-PCR.The neuronal apoptosis was observed by TdT-mediated dUTP nick end labeling ( TUNEL ) .RESULTS: Compared with NS group , the GFAP positive cells was in-creased in SC group (P<0.05).Compared with SC group, the expression of GFAP was significantly reduced in BC group (P<0.05).Compared with NS group, the NF-κB positive cells was increased in SC group (P<0.05).Compared with SC group, the expression of NF-κB was significantly reduced in BC group .RT-PCR showed that the expression trend of GFAP mRNA was similar to that of the protein .Compared with NS group , the TUNEL positive cells in the hippocampus CA1 area in SC group increased significantly 12 h after SC (P<0.01), and reached a peak at 48 h.After the intervention with BC, the TUNEL positive cells decreased significantly between 12~48 h after SC (P<0.05 or P<0.01), but the number of TUNEL positive cells remained significantly greater than that in NS group (P<0.05).CONCLUSION: The expression of GFAP and NF-κB in the hippocampus increased after SC in rats .Baicalin decreases the expression of GFAP and NF-κB in hippocampus of rats with pilocarpine-induced seizures , and reduces the number of neuronal apoptosis , sug-gesting that baicalin may protect against the brain damage caused by status convulsion .

Objective: Nowadays, the power calibration methods of the microwave hyperthermia apparatus doesn't take the power loss of the radiator into account Aiming at this problem, the authors designed an equipment of measuring the actual output power of the microwave hyperthermia apparatus. A new method is proposed for calibration the output microwave power of microwave hyperthermia apparatus. Methods: The magnetron anode current was maintained at a default value by a control system. The microwave power generated by microwave source is coupled firstly to a low-power meter by the coaxial cable to measuring the power going through coaxial cable (P_(coaxial cable)). Then the microwave radiator is connected to the coaxial cable to make the microwave radiated by radiator. The radiator is assembled in the experimental device for the microwave completely absorbed by the water. The absorbed microwave energy of the water is calculated by measuring the water temperature change. The energy loss of the experimental device is calculated using the cooling rate. The output power of the radiator is equal to the ratio of the sum of the two aforementioned energy and the time. And the efficiency of the radiator η_(radiator), is equal to P_(radiator)/P_(coaxial cable) Results: The relationship between the actual output power of the microwave hyperthermia apparatus and the mag- netron anode current is P_(radiator) = 2η_(radiator) I. The efficiency of the radiator is η_(radiator)= (34±1)%. Conclusion: From the experimental results, the current method for calibration output power of microwave hyperthermia apparatus is defective, it dose not consider the conversion efficiency of radiator. Using the calibration method introduced in this paper, wecan accurately deter- mine the actual output power of microwave hyperthermia Apparatus.

Cartoons were used in teaching of medical decision-making analysis course to analyze and reveal the connotations in different decision-making models according the difficulties of students in understanding the teaching decision-making models.The cartoons could effectively improve the understanding of abstract analysis model and the meaning of teaching analysis model in students because they could directly show the iterative and optimizing computation process in decision-making analysis, thus laying a solid foundation for the accurate analysis and ra-tional explanation of the results.Teachers should make full use of the visual cognition potential of students, and fo-cus their attention on the knowledge transmission and information exchange between teachers and students when they design the cartoons in order to improve the classroom teaching effect of teaching decision-making model.

BACKGROUND:Previous studies have found that estrogen deficiency causes a reduction in the activity of bone marrow mesenchymal stem cel s (BMSCs). OBJECTIVE:To explore the effect of endothelial progenitor cel s (EPCs) on the BMSCs proliferation and apoptosis ability of osteoporosis rats. METHODS:Healthy female Sprague-Dawley rats, 6 weeks old, were enrol ed and subjected to bilateral ovariectomy to make osteoporosis models. BMSCs and EPCs were isolated using density gradient centrifugation combined with adhesion method, and identified with surface markers, cel proliferation and immunocytochemistry in vitro. We used Transwel inserts to establish EPCs and OVX-BMSCs indirect co-culture system. Control groups were OVX-BMSCs group and sham-BMSCs group in which rats were only subjected to remove the equal amount of fat tissues around the ovary. Flow cytometry was applied to detect BMSCs proliferation and apoptosis ability. RESULTS AND CONCLUSION:Compared with the control groups, the results of flow cytometry test showed that the proportion of OVX-BMSCs at S phase was significantly increased at 3 days of indirect co-culture with EPCs and the apoptosis rate was significanty reduced at 10 days of indirect co-culture with EPCs (both P<0.05). These results suggest that EPCs can promote the proliferation but inhibit the apoptosis of OVX-BMSCs.

Objective To conduct breath test with a relatively large number of subjects for new data regarding breath acetone in diabetes using a high accuracy and high data throughput breath acetone analyzer based on the cavity ringdown spectroscopy (CRDS) technique.Methods The CRDS breath analyzer was validated by standard acetone gas samples with various concentrations and golden standard gas chromatography-mass spectrometry (GC-MS).A total of 917 breath samples from 260 type 2 diabetic (T2D) patients and 30 healthy individuals were collected under each of 4 different conditions: fasting, 2 h post-breakfast, 2 h post-lunch, and 2 h post-dinner, and the samples were tested by the breath analyzer.Results The linear fitting curve of standard acetone samples with various concentration had good linearity (R=1, P＜0.05).The linear fitting of the results of GC-MS and CRDS was 0.98, suggesting that the obtained acetone concentrations using both methods were consistent.For the 260 T2D subjects, the exhaled breath acetone concentrations ranged from 0.0 to 10.6×10-6, while for the 30 healthy subjects, the breath acetone concentration ranged from 0.1 × 10-6 to 2.0× 10-6.The mean breath acetone concentration of the 260 T2D subjects was (1.5±1.l)× 10-6, which was 1.4 times of(1.1±0.5)×10-6 for the 30 healthy subjects.The mean breath acetone concentrations under the 4 conditions for the 260 T2D subjects ((1.6±1.2)×10-6, (1.4±1.0)×10-6~, (1.4±0.9)×10-6, and (1.4±1.2)× 10-6) were higher than that of the 30 healthy subjects ((1.3±0.3)×10-6, (1.0±0.6)×10-6, (1.0±0.6)×10-6, and (1.1±0.4)×10-6), respectively.No correlation was found between the breath acetone concentration and the blood glucose level of the T2D subjects and the healthy individuals.Conclusions The GC-MS validation confirms that the CRDS breath acetone analyzer is a reliable instrument for fast response and on-line breath acetone measurement.An elevated mean breath acetone concentration exists in T2D subjects.The relationship between breath acetone level and physiological parameters needs to be further investigated.

Febrile seizure is one of the most common convulsive disease in childhood.Its pathogenesis is not yet clear.Sometimes the patients with febrile seizures may have fever after seizure and some epilepsy syndrome is characterized by febrile convulsions in the early stage, which makes the differential diagnosis particularly important.Studies have shown that cytokines and genes are involved in the pathogenesis of febrile convulsions.There are differences in the levels of interleukin-6 and interleukin-10 between febrile seizure and other diseases, and the underlying mechanism varies.This article discusses the research update on the expression of IL-6 and IL-10 in related fields from serum levels, cerebrospinal fluid levels, gene and therapeutic drug innovation, in order to provide ideas for clinical diagnosis, treatment and prevention.

Objective To investigate and analyze the epidemiological characteristics of an epidemic situation of human brucellosis epidemic in Xinchang County Zhejiang Province,and provide experience for prevention and treatment of brucellosis.Methods Retrospective analysis was performed to collect the data of epidemic situation,field case investigation,serum test and hospital diagnosis and treatment,and the situation of epidemic situation in 2018 of Xinchang County and field investigation were summarized and analyzed.Results A total of 3 confirmed cases were reported in this outbreak,one of them was a laboratory diagnosed case of brucellosis,2 cases were closely contacted with sick animals,and those 2 cases were confirmed by serological tests (n =30).The source of infection was the purchase and slaughter of unquarantined goats.A total of 10 goats blood samples were collected in the inter-animal investigation,4 of them were positive.Conclusion Unprotected contact with infected goats is a major exposure factor,raising awareness and promoting publicity about the path of infection with brucellosis is the key to preventing brucellosis.

Objective:To describe the epidemiological characteristics of mental disorders in community resi-dents aged 18 years and over in the Chifeng City of Inner Mongolia Autonomous Region.Methods:Six thousand three hundred and seventy six individuals aged 18 years and over were sampled using stratified Probability-Propor-tional-to-Size Sampling in Chifeng City in 2010.All respondents were investigated by face-to-face interview.The Composite International Diagnostic Interview-3.0 Computer Assisted Personal Interview (CIDI-3.0-CAPI)was used to make diagnoses based on the definition and criteria of the Diagnostic and Statistical Manual of Mental Dis-orders,Fourth Edition (DMS-IV).Results:A total of 4528 subjects completed the CIDI-3.0-CAPI.Regarding anxi-ety disorder,mood disorder,substance use disorder,and impulse control disorder,the 30-day adjusted prevalence rates (95%CI)were 2.5%(2.08% -2.99%,0.9%(0.67% -1.23%),0.5%(0.34% -0.76%),and 0.6%(0.41% -0.86%)respectively,and the 12 -month prevalence rates were 4.5% (3.93% -5.15%),2.4%(2.0% -2.90%),1.1% (0.84% -1.45%),and 1.0% (0.74% -1.32%)respectively.The lifetime adjusted prevalence rates were 6.6% (5.92% -7.36%),6.5% (5.81% -7.24%),2.7% (2.26% -3.21%),and 1.4%(1.23% -1.95%)respectively.Conclusion:According to morbidity,anxiety disorders,mood disorder,substance use disorders and impulse control disorders are common in Chifeng City of Inner Mongolia Autonomous Region se-quencely,being a prominent public health problem.

Shuangdan oral liquid (SDO) containing radix Salviae miltiorrhizae (Chinese name Danshen) and cortex moutan (Chinese name Mudanpi) is a traditional Chinese medicine using for treating vascular diseases. Danshensu (DSS) is a main effective monomer composition derived from radix Salviae miltiorrhizae and paeonol (Pae) from cortex moutan. Although the two herbs are widely used in traditional Chinese medicine, the pharmacological functions of their active compositions were not reported. Therefore, the research of DSS and Pae in mechanisms and pharmacodynamics interaction can provide scientific evidence to support clinical application. The diabetic nephropathy (DN) rats which were induced by streptozotocin (STZ) were treated with SDO, DSS, Pae, and DSS+Pae for eight weeks. The positive effects on DN animal models were investigated by detection of physiological and biochemical indexes and oxidative stress markers, within five treatments: SDO, DSS, Pae, DSS+Pae and insulin group. Compared with the model group, the DSS+Pae group improved the renal function, blood lipid metabolism and blood viscosity, increased the vitality of T-SOD or T-AOC and decreased the level of MDA or NO after the treatment. The study was successfully showed that the DSS+Pae group could delay the process of DN, especially in the renal injury part of histopathology changes. Our results suggest that the co-administration of DSS and Pae significantly may play a protective role in DN rats through decreasing the oxidative stress and improving the blood lipid metabolism mechanisms.
Animals ; Blood Viscosity ; Diabetic Nephropathies* ; Insulin ; Lipid Metabolism ; Medicine, Chinese Traditional ; Models, Animal ; Oxidative Stress ; Rats* ; Salvia ; Streptozocin ; Vascular Diseases

OBJECTIVE: To assess the value of copy number variation analysis based on next generation sequencing (CNV-seq) in prenatal diagnosis for women at advanced maternal age. METHODS: A prospective analysis was carried out for women who underwent amniocentesis at 18~36 weeks of gestation for fetal CNV-seq for advanced maternal age. RESULTS: For 1461 unrelated Chinese women with a singleton pregnancy, CNV-seq was performed for all samples successfully. The proportion of chromosomal abnormalities was 2.3% (34/1461), of which 44.12% were submicroscopic copy number variations (<5 Mb). CONCLUSION Pregnant women at an advanced maternal age should be informed for not only common trisomies but all pathogenic chromosomal aberrations. NGS was a sensitive and accurate approach for detecting CNVs.
Chromosome Aberrations ; Chromosome Disorders ; DNA Copy Number Variations ; Female ; Humans ; Maternal Age ; Pregnancy ; Prenatal Diagnosis ; Prospective Studies