Objective To investigate the application of the ultrasonic guidance-assisted neonatal internal jugular vein catheterization.Methods Sixty two newborns (including low birth weight infants) receving thoracic/abdominal operation or resection of malignant tumor on the body-surface were randomly assigned to ultrasound guidance (UG) group or surface mark landmark(S) group.Newborns in both groups were all punctured with 22G venous indwelling needles to place the external casing,followed by the steel wire guidance-assisted implantation of ARROW 4F dual chamber central venous catheter.Then we compared the rate of successful insertion attempt,rate of malpositioning,complications and average operation time between the two groups.Results The rate of successful insertion attempt was 96.8%(30/31) in the UG group,significantly higher than that in the S group (32.3%,10/31),there was significant difference between the two groups(χ2=28.182,P=0.000).Malpositioning happened in 2 cases in the UG group,but 25 cases in the S group.Rate of complications was higher in the S group compared to the UG group (64.5% vs 3.2%,χ2=25.99,P=0.000).Most importantly,the average operation time was (4.366±1.137)min in the UG group,significantly shorter than that of the S group [(13.70±5.34)min,t=5.463,P=0.028)].ConclusionUltrasound guidance-assisted catheterization for neonatal internal jugular vein is safe and feasible and can dramatically improve the success rate and prevent complications.

Results There was no significant difference in the distribution of genotypes and allele frequencies of HSP 70-1 and HSP70-hom between case group and control group (P>0.05), but there was significant difference in the distribution of genotypes and allele frequencies of HSP70-2 between the two groups(P<0.05).There was no significant difference in the distribution of genotypes and allele frequencies of HSP70-1,HSP70-2 and HSP70-hom between Hui and Han people (P>0.05)or in the distribution of genotypes of HSP 70-2 between males and females in case group, but there was significant difference in the distribution of allele frequencies of HSP 70-2 in case group .There was no significant difference in the distribution of genotypes and allele frequencies of HSP 70-1 and HSP70-hom between males and females in case or control group .Logistic analysis confirmed that the WC, TG, TC, LDL-C, SBP, family history of diabetes and G allele were risk factors of T 2DM. Conclusion GG genotype and G allele of HSP 70-2 (+1267 ) SNP may be genetic markers for the susceptibility of type 2 diabetes.There is no significant difference in the distribution of genotypes and allele frequencies of HSP 70-1,HSP70-2 and HSP70-hom between Hui and Han nationalities .Family history of diabetes, LDL-C, TC, and G allele of HSP70-2 (+1267) SNP are the main risk factors of T2DM while HDL-C is a protective factor.

Objective To analyse the clinical significance of (IL-5),interleukin-6 (IL-6),interleukin-8 (IL-8),eosinophil cationic protein (ECP),eosinophil (EOS),immunoglobulin E (IgE),vascular endothelial growth factor (VEGF) and its receptor in serum of children with infectious pneumonia.Methods 80 children with infectious pneumonia were enrolled in Lianyungang Maternal and Child Health Hospital from March 2016 to March 2017,and were included in the observation group.According to the pathogen type,these children in the observation group were divided into virus group,mycoplasma infection group and bacterial infection group.At the same time,30 healthy children were selected as the control group.The levels of TNF-α,IL-5,IL-6,IL-8,ECP,VEGF,VEGF-R1 and VEGF-R2 in serum were measured by enzyme-linked immunosorbent assay (ELISA).The levels of EOS in blood were measured by automatic blood cell analyzer and the level of lgE in serum was detected by immunoturbidimetric turbidimetric assay.Results The levels of TNF-α,IL-5,IL-6,IL-8,ECP,VEGF,VEGF-R1,VEGF-R2,EOS and IgE in the blood of the observation group were significantly higher than those in the control group (t=2.325 ～ 3.593,all P＜0.05).The levels of TNF-α,IL-5,IL-6 and IL-8 in the serum of the bacterial infection group were significantly higher than those in the virus group and mycoplasma group (all P＜0.05).The levels of VEGF,VEGF-1 and VEGF-R2 in serum of patients with mycoplasma infection were significantly higher than those in the group of bacterial infection and virus infection (all P＜0.05).Serum IgE levels and the number of peripheral blood EOS in the bacterial infection group,viral infection group and mycoplasma infection group had no significant difference (P＞0.05).Conclusion The serum levels of TNF-α,IL-5,IL-6 and IL-8 can be used as markers for bacterial infectious pneumonia and viral infectious pneumonia and mycoplasma infectious pneumonia.

OBJECTIVETo study the chemical constituents in root and rhizome of Aster tataricus.

METHODSCompounds were isolated and purified by silica gel and sephadex LH-20 column chromatography. Their structures were identified by physicochemical properties and spectral analysis.

RESULTNine compounds were isolated and identified as quercetin (I), kaemferol (II), emodin (III), chrysophanol (IV), physcion (V), benzoic acid (VI), p-hydroxy-bezoic acid (VII), E-caffeic acid (VIII), E-ferulic acid hexacosyl ester (IX).

CONCLUSIONCompounds IV, V, VI, VII, VIII, IX were isolated from A. tataricus for the first time.

Anthraquinones ; chemistry ; isolation & purification ; Aster Plant ; chemistry ; Benzoic Acid ; chemistry ; isolation & purification ; Emodin ; analogs & derivatives ; chemistry ; isolation & purification ; Plants, Medicinal ; chemistry ; Rhizome ; chemistry

OBJECTIVETO establish a RP-HPLC method for the determination of calycosin-7-O-beta-D-glucopyranoside in Radix Astragali, and to analyse the calycosin-7-O-beta-D-glucopyranoside content of ten samples of Radix Astragali, collected from different regions.

METHODA Polaris C18(250 mm x 4.6 mm, 5 microns) column was used and a mixture of methanol-water (30:70) was used as the mobile phase at a flow rate of 1.0 mL.min-1. The column temperature was 25 degrees C and the UV detection wavelength was 254 nm.

RESULTThe calibration curve was in good linearity over the range of 0.0106-2.12 micrograms with the regression equation Y = 3035. 97 X - 14.85(r = 0.9999). The average recovery was 95.8% (n = 5, RSD = 1.3%).

CONCLUSIONThe method is simple, quick, sensitive and reproducible. In all of the samples, the calycosin-7-O-beta-D-glucopyranoside contents differ markedly.

Astragalus membranaceus ; chemistry ; classification ; China ; Chromatography, High Pressure Liquid ; Ecosystem ; Glucosides ; analysis ; Isoflavones ; analysis ; Plant Roots ; chemistry ; Plants, Medicinal ; chemistry ; Quality Control ; Species Specificity

BACKGROUNDEnvironmental toxins can destroy the physiological process of spermatogenesis and even lead to male infertility. Resveratrol (RES) is a natural phytoalexin with a wide range of biological activities. Some recent researches have demonstrated that RES can increase sperm output and protect sperm from apoptosis caused by physical damage. However, there is no evidence indicating that it can also exhibit a similar activity in testis injury caused by environmental toxins. This study was designed to evaluate the protective effect of resveratrol on testis damaged by environmental toxins and to elucidate the possible mechanism of its protective effect.

METHODSIn this study 2, 5-hexanedione (2, 5-HD) was used as the injury agent. Forty male SD rats were randomly divided into 5 groups. During the first 5 weeks, group A was raised normally, groups B, C, D and E were exposed to 1% 2, 5-HD; during the following 9 weeks, group C, D, E received intragastric administration of different concentrations of resveratrol (20 mg x kg(-1) x d(-1), 40 mg x kg(-1) x d(-1) and 80 mg x kg(-1) x d(-1)), while groups A and B were treated by carboxymethylcellulose. Physical signs, body weight gain and testis weight were comparatively observed. Numbers and diameters of seminiferous tubules were analyzed following HE staining. In addition, expression of the c-kit protein and gene in spermatogenic cells in every group was detected with immunohistochemistry, Western blot or RT-PCR.

RESULTSThe 2, 5-HD treatment resulted in physical signs that became worse and in emarciated testis. HE staining and immunohistochemistry showed that seminiferous tubules became emarcid, obsolete spermatogonia being stagnant and expression of c-kit protein being depressed. After oral administration of resveratrol, the 2, 5-HD-induced physical signs were improved and close to the normal rats. The gain of body weight increased (P < 0.01). The recovery of testis weight was significant (P < 0.01). At the histological level, the seminiferous epithelia began to differentiate (P < 0.01); and even the physiological process of spermatogenesis restarted. Moreover, expression of c-kit protein and gene function resumed, although its expression remained different from the normal group. The diameter of and number of seminiferous tubules and the expression level of c-kit protein and gene activity were much closer to the normal group with increased doses of the resveratrol through oral administration.

CONCLUSIONSResveratrol could ameliorate markedly the dyszoospermia induced by 2, 5-HD and induce spermatogenesis. The expression of c-kit, which is a specific marker protein of spermatogenic cell membranes, could be regulated by resveratrol.

Animals ; Body Weight ; drug effects ; Hexanones ; toxicity ; Immunohistochemistry ; Male ; Organ Size ; drug effects ; Proto-Oncogene Proteins c-kit ; analysis ; genetics ; RNA, Messenger ; analysis ; Rats ; Rats, Sprague-Dawley ; Seminiferous Tubules ; drug effects ; pathology ; Spermatogenesis ; drug effects ; Stilbenes ; pharmacology ; Testis ; drug effects

Objective To investigate the predietors of road traffic accidents(RTAs)in middle school students.a ease-control study WaS designed to seek new clues for prevention and control on RTAs in this population.Methods Cases were 116 students who experienced RTAs from 2005/01/01 to 2005/12/31.116 students were.served as controls who were from the same clams of the cases and matched by age and sex.Information on personal behavior,family conditions,and knowledge,attitude,practice(KAB)on road traffic of these children were collected and compared.Conditionallogistic regressions were conducted to analyze the relationship between these factors and RTAs.Results Compared to the controls.the cases showed more negative attitude and risk-taking-behaviors especially in riding bicycle.However,knowledge on road safety showed less significant differences between eaSe and control groups.The negative attitude and risk-taking-behaviors were independent risk factors for RTAs by logistic regression.In addition.distance from home to school that longer than 1000 m seemed a risk factors for RTAs.while high education levels among mothers WaS a protective factor.Conclusion Road safety attitude and behavior.distance from home to school were the main influenee factors for RTAs among middle school students.It seemed more important in improving the attitude and behavior on road safety than to enhance the knowledge for prevention and eontrol of RTAs among middle school students.

OBJECTIVETo explore the clinical effect of transplantation of the long head of biceps femoris muscle flap in combination with semi-V posterior thigh fasciocutaneous flap for repair of pressure sores over ischial tuberosity.

METHODSEight patients with 10 deep pressure sores over ischial tuberosity were admitted to the First Affiliated Hospital to the PLA General Hospital and the 98th Hospital of PLA from April 2004 to June 2010. The wounds measured from 2 cm × 2 cm to 6 cm × 4 cm were covered with the long head of biceps femoris muscle flap and semi-V posterior thigh fasciocutaneous flap (ranged from 10 cm × 6 cm to 13 cm × 8 cm). The condition of flaps was observed and followed up for a long time.

RESULTSAll flaps survived. Nine wounds healed by first intention. Subcutaneous accumulation of fluids occurred in one wound with formation of a sinus at drainage site, and it healed after dressing change for 25 days. Patients were followed up for 7 to 34 months. Sore recurred in one patient 9 months after surgery, and it was successfully repaired with the same flap for the second time. Flaps in the other 7 patients appeared satisfactory with soft texture and without ulceration.

CONCLUSIONSThis combined flap is easy in formation and transfer, and it causes little side injury with good resistance against pressure. It is a new method for repair of pressure sore over sacral region.

Adult ; Female ; Humans ; Ischium ; Male ; Middle Aged ; Muscle, Skeletal ; transplantation ; Pressure Ulcer ; surgery ; Reconstructive Surgical Procedures ; methods ; Skin Transplantation ; methods ; Surgical Flaps

Spontaneous, rhythmical contractions, or vasomotion, can be recorded from cerebral vessels under both normal physiological and pathophysiological conditions. We investigated the cellular mechanisms underlying vasomotion in the cerebral basilar artery (BA) of Wistar rats. Pressure myograph video microscopy was used to study the changes in cerebral artery vessel diameter. The main results of this study were as follows: (1) The diameters of BA and middle cerebral artery (MCA) were 314.5±15.7 μm (n=15) and 233.3±10.1 μm (n=12) at 10 mmHg working pressure (P<0.05), respectively. Pressure-induced vasomotion occurred in BA (22/28, 78.6%), but not in MCA (4/31, 12.9%) from 0 to 70 mmHg working pressure. As is typical for vasomotion, the contractile phase of the response was more rapid than the relaxation phase; (2) The frequency of vasomotion response and the diameter were gradually increased in BA from 0 to 70 mmHg working pressure. The amplitude of the rhythmic contractions was relatively constant once stable conditions were achieved. The frequency of contractions was variable and the highest value was 16.7±4.7 (n=13) per 10 min at 60 mmHg working pressure; (3) The pressure-induced vasomotion of the isolated BA was attenuated by nifedipine, NFA, 18β-GA, TEA or in Ca(2+)-free medium. Nifedipine, NFA, 18β-GA or Ca(2+)-free medium not only dampened vasomotion, but also kept BA in relaxation state. In contrasts, TEA kept BA in contraction state. These results suggest that the pressure-induced vasomotion of the isolated BA results from an interaction between Ca(2+)-activated Cl(-) channels (CaCCs) currents and K(Ca) currents. We hypothesize that vasomotion of BA depends on the depolarizing of the vascular smooth muscle cells (VSMCs) to activate CaCCs. Depolarization in turn activates voltage-dependent Ca(2+) channels, synchronizing contractions of adjacent cells through influx of extracellular calcium and the flow of calcium through gap junctions. Subsequent calcium-induced calcium release from ryanodine-sensitive stores activates K(Ca) channels and hyperpolarizes VSMCs, which provides a negative feedback loop for regenerating the contractile cycle.

OBJECTIVETo evaluate the sound pressure level at outlet of external auditory canal and eardrum, and to observe the range of maximum frequency of sound effect of outlet ear canal, so as to provide exact data for designing personal noise rating instrument and studying the effect of environmental noise on human body, and to provide basis for calibration of noise sound pressure level.

METHODSound pressure level at eardrum and outlet of external auditory canal in 30 young people (60 ears) were measured by Audio Scan RM500 at 50 dB SPL narrow band noise with different frequencies (0.25 - 8.00 kHz).

RESULTSAt the same frequency, sound pressure levels at eardrum were less than (0.6 +/- 2.6) dB SPL, at outlet of outlet ear canal less than (0.2 +/- 1.8) dB SPL, there were no significant differences between both sound pressure levels (P > 0.05). There were significant differences in sound pressure levels between both places at 1.50 - 8.00 kHz (P < 0.01). The maximum difference was (10.5 +/- 3.4) dB SPL at 2.00 kHz, and the minimum was (0.5 +/- 6.2) dB SPL at 0.50 kHz.

CONCLUSIONThe effects of increased sound pressure should be considered in the evaluation of environmental noise and the design for individual noise rating meter when the noise frequency was >or= 1.50 kHz.

Adult ; Ear Canal ; physiology ; Ear, Middle ; physiology ; Female ; Humans ; Male ; Models, Biological ; Pressure ; Sound