The cerebral blood flow of infant is effected by physiological and pathological factors.As the cerebrovascular autoregulation of neonates is poor,in pathological cases,especially when hypoxemia and hypercapnia impaired regulation of its own,lead to changes in cerebral blood flow,then resulting in severe brain injury.It has made enormous progress in the research on the changes of cerebral blood flow in newborns in recent years.In normal infants,cerebral blood flow velocities is positively correlated to gestational age and body weight,and increase gradually with day-age in the first week after birth.The cerebral blood flow of newborn with brain injury can present as insufficiency,over-perfusion or low speed high-resistance earlier and high speed low-resistance later.Different results may be related to the duration and severity of asphyxia,but all of those are signs of damage of self-regulatory function of cerebral blood flow.Cerebral hemodynamic change is the important pathogenesis mechanism of brain injury.

Objective To investigate the effects of intense pulsed light(IPL) on the collagen metabolism in human fibroblasts.Methods The callan foreskin fibroblasts were cultured and treated with different wave length and designed dose of IPL irradiation(590-1 200 nm,and 29 J/cm2),while 10 without IPL irradiation as controls.By culturing 1,12,24 and 48 h after the irradiation,the synthesis of collagen was measured by 3H-proline incorporation determination. Results The synthesis of collagen activity increased significantly(P

OBJECTIVETo inspect the quality of commercially available Chaihu (Bupluri Radix, a common traditional Chinese herbal drug) in Guangzhou by determining the content of saikosaponin A (SSa) using enzyme-linked immunosorbent assay (ELISA).

METHODSA competitive ELISA system using mouse anti-saikosaponin A monoclonal antibody was established for determining SSa content. Commercial samples of Chaihu were obtained from 10 drug stores in Guangzhou, and SSa contents in the methanol extracts of these samples were determined using the ELISA system.

RESULTSThe detection range of this competitive assay was 0.16-2.5 µg/ml for determining SSa contents. In the 10 commercial Chaihu samples, SSa contents in the methanol extract determined by this method ranged from 0.32 µg/mg to 6.87 µg/mg, and 3 samples showed a SSa content lower than the minimum requirement documented in the Chinese Pharmacopeia.

CONCLUSIONThis competitive ELISA is sensitive, rapid, economic and environment-friendly for SSa determination, especially suitable for batch determination. The results of SSa detection for the commercial Chaihu samples demonstrate an uneven quality of Chaihu in Guangzhou market, suggesting the necessity of more rigorous quality control measures for this drug.

Antibodies, Monoclonal ; Bupleurum ; chemistry ; Drugs, Chinese Herbal ; analysis ; Enzyme-Linked Immunosorbent Assay ; methods ; Oleanolic Acid ; analogs & derivatives ; analysis ; Quality Control ; Saponins ; analysis

Select patients diagnosed of hypertension in the first place in 16 hospitals and the patients were described by association rules analysis and distribution for the analysis in the study,in order to understand the information of diagnosis and treatment in hypertension patients in real world. The information include age, gender, admission condition, inpatient department, hospitalization expenses, western medicine comorbidities, the traditional Chinese medicine (TCM) syndrome and the medicine. The average age of patients was 64 years in the study. The proportion of men to women about 1. 10: 1. Admission condition is critical for about 10.12% of the total and more concentrated in the cardiovascular department. Hospital stay ranged from 8 to 14 d. Inpatients with medical insurance is 62.93%. Total hospitalization cost distribution most is the 5 000-10 000 RMB. Hypertension complicated with coronary heart disease, blood lipoprotein disorder disease; phlegm and blood stasis and Yin deficiency of liver and kidney are the most in TCM syndrome type. Promoting blood circulation and removing blood stasis is the major in Chinese medicine treatment. Western medicine treatment basically conforms to the guidelines. The most antihypertensive drugs is calcium antagonistst, accounting for about 81.2% of the total number. Class ACEI, class ARB, beta blockers, diuretics class are accounted for 43.0%, 43.4%, 42.4%, 42.4%, fixed compound is only 2 393, accounting for about 8%. the total frequency of five classes of antihypertensive drugs is 78 206 times. The principal conclusions of this analysis are as follows: the elderly people is the most in hypertension, more men than women; medical insurance is the majority type in hospitalization cost; nearly half of the population is combined with coronary heart disease; phlegm and blood stasis and yin deficiency of liver and kidney are the most in TCM syndrome type; western medicine treatment basically conforms to the guidelines. Combination therapy is more, less fixed compound preparation in western medicine. Chinese medicine is mainly to promoting blood circulation. Suggesting that the clinical treatment in strict blood pressure and at the same time, pay attention to combination therapy and the use of fixed compound preparation,it's useful to control the blood pressure better. Combined with traditional Chinese medicine and resolving phlegm and removing blood stasis, reduce the target organ damage, reduce complications, the prevention and control work of hypertension in China still faces enormous challenges at present. The result provides reference information for clinical medicine and medical research.
Adolescent ; Adult ; Aged ; Antihypertensive Agents ; therapeutic use ; Blood Pressure ; drug effects ; Drugs, Chinese Herbal ; therapeutic use ; Female ; Humans ; Hypertension ; complications ; drug therapy ; Male ; Medicine, Chinese Traditional ; methods ; Middle Aged ; Treatment Outcome ; Young Adult

Objective To observe the curative effect of autologous bone marrow stem cells implantation to bone inducing active material combined with core decompression in the treatment of early femoral head osteonecrosis (FHON).Methods From April,2010 to March,2012,in Department of Orthopaedics,the First Affiliated Hospital of Zhengzhou University,a total of 79 adult patients with 108 hips suffered from the early stage FHON were treated with autologous bone marrow stem cells implantation to bone inducing active material combined with core decompression through the core of the femoral canal,male of 65 cases,female of 14 cases,the mean age was 29.5 (20-50) years old.According to the etiology classification:the alcohol-induced FHON was in 54 patients with 66 hips,steroid-induced FHON in 14 patients with 20 hips,steroid and alcohol-induced ONFH was in 11patients with 22 hips.According to association research circulation osseous (ARCO)classifying,Ⅰ-A,Ⅰ-B,Ⅱ-A,Ⅱ-B phases were 6,16,8,and 78 hips,respectively.There were 43 hips in left side and 65 hips in the right side.Results All patients were followed up from 4 to 6 (4.8 ± 0.6) years.Compared with before operation,the scores of all patients were significantly increased (P ＜ 0.05).All patients with hip pain symptoms were relieved or disappeared.The healing tine of the patients in all age groups was statistically significant (P ＜ 0.05),and with the increase of age,the healing time was prolonged.The excellent and good rates of Ⅰ-A,Ⅰ-B,Ⅱ-Aand Ⅱ-B were 100％ (6 / 6),100％ (16/16),100％ (8/8),and 98.7％ (77/78).The X-ray showed that coarse channel osteogenic phenomenon is obvious,there is 1 case collapse of femoral head of stage Ⅱ-B,the rest were not collapse.Conclusion The treatment of early osteonecrosis of the femoral head with autologous bone marrow stem cells implantation to bone inducing active material combined with core decompressionis definitely effective,especially in patients with ARCO:Ⅰ-A,Ⅰ-B and Ⅱ-A phase,and the effect of ARCO:Ⅰ-A and Ⅱ-A is the best.

OBJECTIVETo compare therapeutic effects of clavicular hook-plate fixation and modified Weaver-Dunn surgery combined with clavicular hook-plate fixation in treating Tossy type III acromioclavicular joint dislocation.

METHODSForty-one patients with Tossy type III acromioclavicular dislocation treated by operation were retrospectively analysis from January 2012 to January 2014. The patients were divided into clavicular hook-plate fixation group (group A) and modified Weaver-Dunn surgery combined with clavicular hook-plate fixation (group B) according to surgical procedures. In group A, there were 15 males and 6 females aged from 17 to 51 years old with an average of (31.60 ± 12.58) years old, preoperative Constant-Murley score was 40.25 ± 9.80, and treated with clavicular hook-plate fixation. In group B, there were 13 males and 7 females aged from 18 to 48 years old with an average of (29.40 ± 11.27) years old, preoperative Constant-Murley score was 41.45 ± 8.81, and treated with modified Weaver-Dunn surgery combined with clavicular hook-plate fixation. Operative time, blood loss, imaging changes before and after operation, postoperative complications were compared; Constant-Murley score at 3, 6 and 12 months after operation were evaluated.

RESULTSIn group A, operative time was 40.50 ± 24.36) min, blood loss was (75.30 ± 30.36) ml; In group B, operative time was (60.10 ± 23.55) min, blood loss was (100.70 ± 40.12) ml. Twenty-one patients in group A were followed-up from 12 to 18 months with an average of (14.8 ± 3.1) months; 20 patients in group B were followed-up from 12 to 14 months with an average of (13.6 ± 1.5) months. There were no significant differences in operative time, blood loss and follow-up time between two groups. Complications were in six patients of group A and 3 patients of group B, and there were no significant meaning between two groups. At 6 months after operation, Constant-Murley score in group A was 88.85 ± 4.23, 92.15 ± 3.82 in group B; and had significant meaning between two groups (t = -2.56, P = 0.022 < 0.05). While there were no differences in Constant-Murley score in other times.

CONCLUSIONBoth of clavicular hook-plate fixation and modified Weaver-Dunn surgery combined with clavicular hook-plate fixation are effective operative methods for the treatment of Tossy type III acromioclavicular dislocation. Clavicular hook-plate fixation has advantage of less trauma, while modified Weaver-Dunn surgery combined with clavicular hook-plate fixation could reconstruct coracoclavicular ligament more stronger, clavicular hook plate could take out earlier, also improve shoulder joint function earlier.

Acromioclavicular Joint ; injuries ; Adolescent ; Adult ; Bone Plates ; Case-Control Studies ; Female ; Fracture Fixation, Internal ; methods ; Humans ; Male ; Middle Aged ; Retrospective Studies ; Shoulder Dislocation ; surgery

Adult ; Female ; Fungi ; Humans ; Laryngitis ; microbiology ; Mycoses ; Vocal Cords ; microbiology

In order to study the regularity of shedding virus from infected SPF chickens and the formation of aerosol of H9N2 subtype AIV, SPF chickens were bred in a positive and negative pressure isolator. Aerosol samples were collected by AGI-30 (All Glass Impinger-30) extractor, and simultaneously trachea and cloaca samples were collected by tracheal swabs and cloacal swabs in different periods after challenged with vi- ruses. The above-mentioned samples were detected by HI, Dot-ELISA and RT-PCR methods. The results in- dicated that aerosols were isolated from the 4 days to the 43 days after inoculation. It was proved that H9N2 subtype AIV could copy themselves in respiratory passage and cloaca, and then could formation of aerosols. AIV H9N2 subtype could be isolated from cloacal and tracheal swabs 3 days after inoculation and lasted for 45 days, viruses were detected from all infected SPF chickens on 7 days.

The skin ulceration syndrome of sea cucumber is a kind of desease induced by bacterium.In order to investigate the bacterium of infected sea cucumber and detect the N-acyl-homoserine lactones(AHLs) se-cretion of the bacterium,7 bacterial strains were isolated from the infected sea cucumber.These strains were identified by physiological-biochemical characteristics and 16S rDNA sequence.Results show that strain C6 belongs to Tenacibaculum,strain 4 belongs to Shewanella putrefaciens group,strain TB belongs to Vibrio,strain BP2,BP3,BP4 and BP6 belong to Pseudoalteromonas,respectively.AHLs were detected with strain Agrobacterium tumefaciens KYC55.Among these bacterial strains,strain C6,4,TB,BP3 and BP4 can se-cret AHLs,while strain BP2 and BP6 can’t.And the AHLs activity differs,from the highest to the lowest are 4,TB,BP4,BP3 and C6.

OBJECTIVETo assess occlusal balance of normal occlusion in intercuspal position with maximal bite force.

METHODSMaximal bite force was recorded in intercuspal position by use of T-Scan II system from 123 subjects with normal intact dentitions. Occlusal balance of normal occlusion was quantitatively analyzed from center of force, percentage of bite force, and occlusal contacts.

RESULTSThe relative position of the center of bite force, the difference in bilateral force percentage, and unsymmetrical coefficient followed normal distributions. The 95% reference ranges for corresponding testing items were -6.60 to 6.68 mm, -15.50% to 12.10%, and 0.65 to 1.39. There was no statistic difference (P = 0.915) in occlusal contacts between left and right sides. The 98.4% of normal occlusion subjects had the center of bite force locating in posterior region of dentition when biting with maximal force in intercuspal position.

CONCLUSIONSOcclusal balance could be evaluated by T-Scan II system. Occlusion of normal subjects biting with maximal force was stable and bilaterally balanced in intercuspal position.

Adolescent ; Bite Force ; Dental Occlusion, Balanced ; Dental Stress Analysis ; instrumentation ; Female ; Humans ; Image Processing, Computer-Assisted ; Jaw Relation Record ; Male ; Reference Values ; Young Adult