Background Increase in ophthalmic optical medical instruments and microsurgical applications leads to retinal photochemical damage and other problems delivery of a variety of devices,so the in-depth study and understanding of its pathogenesis after retina light damage can provide a reference for the clinical treatment of related diseases.Objective This study was to investigate the therapeutic effect and relative mechanism of erythropoietin (EPO) on mouse retina photic injury by studying the expression of matrix metalloproteinases-2 (MMP-2)and MMP-9.Methods Fifty-two SPF BALB/c mice were randomized into normal control group,simple light-induced group and EPO pretreatment group by balloting method.The mice of simple light-induced group and EPO pretreatment group were continuously irradiated with 6000 lx diffuse light for 4 hours in a home-made box to establish the models of light-induced damage;while recombinant human EPO (rhEPO)of 5000 U/kg was intraperitoneally injected prior to the light exposure in the EPO pretreatment group.The expressions of MMP-2 and MMP-9 were examined at 6,12,36,72,96 hours and 7 days following light-exposure by immunohistochemistry.Results Edema and structural disorder of RPE cells appeared inthe simple light-induced group after light-exposure and aggravated with lapse of light-exposure time,but no similar change was seen until 7 days in the EPO pretreatment group.The immunohistochemistry findings showed that the expression of MMP-2(A value)in RPE cells was less in the normal mice.However,a large quantity of positive cells appeared in RPE layer 36 hours after light-exposure.Compared with the simple light-induced group,the positive expression of MMP-2 protein in EPO pretreatment group was significantly decreased,showing statistically significant differences among these three groups and different time points (Fgroup =3.68,P =0 04; Ftime =9.13,P=0.00).There was hardly any MMP-9 expression in the retina of the normal mice.In simple light-induced group,a few of positive cells appeared in RPE layer 6 hours after light-exposure and reached its peak 12 hours following light-exposure.The gradually down-regulation of MMP-9 expression happened 96 hours later following light-irradiation.The expression tendency of MMP-9 in EPO pretreatment group was similar to the simple light-induced group.Significant differences in expressions of MMP-9 were found among different groups and time points (Fgroup=3.61,P =0.04;Ftime =16.91,P=0.00).Conclusions MMP-2 and MMP-9 may be involved in the mechanism of retina photic injury by down-regulating the expression of MMP-2 and MMP-9 in RPE cells.

Objective To explore the advantage of Body-Jet hydrodynamic liposuction system in autologous fat transplantation.Methods Through the unique hydrodynamic jet washing liposuction technology and the closed fat storage system,the fat was filtrated and purified,and then the fat was injected into the posterior space of greater pectoral muscle and breast tissue as well as subcutanous tissue of the breast with unique reverse-directed double orifice injector.During May 2015 to July 2016,27 patients were treated in our hospital and followed up for 30 to 180 days.Results All patients had good incision healing;there were no rugged skin,hematoma,seroma and other complications in the liposuction site.In 25 patients after augmentation the breast had rounded appearance and good feeling;1 patient presented liquefied fat,1 patient had poor survival of the injected fat;later 2 cases underwent second surgery.Conclusions The liposuction system can be applied in autologous adipose transplantation breast augmentation.The procedure is simple and quick.The survival rate after adipose transplantation is high with quick recovery.The shape of the breast is full and round with good feeling.

AIM To investigate actions of total paeony glycoside(TPG) on learning and memory capacity and related products of metabolism of senile mice induced by D galactose. METHODS The subacute senile mouse models induced by injection of D galactose subcutaneously were used. RESULTS TPG could improve the learning and memory capacity of model mice in shuttle test and enhance spatial resolution in water maze test. TPG not only reduced the content of monoamine oxidase(MAO) and inhibited the decrease of cholinesterase(CHE) significantly, but also lessened the level of malondialdehyde(MDA) and inhibited the decrease of superoxide dismutase(SOD) in cerebrum of model mice. TPG still promoted the recovery of lobar atrophy and hypoimmunity of senile mice remarkedly. CONCLUSION TPG possesses obvious effects of improvement on learning, spatial resolution and delaying senility.

Objective To investigate the iodine nutritional status in the key populations before and after the adjustment of salt iodine content in Yantai of Shandong.Methods In 2010 (the pre-adjustment period) and 2014,2015 (the post-adjustment period),the changes in the residents' iodized salt,the goiter prevalence and urinary iodine of children aged 8-10,the urinary iodine of pregnant women,and the iodine content of drinking water before and after the adjustment were analyzed.Results The coverage rate of iodized salt and the edible rate of qualified iodized salt were 98.27％ and 97.28％,respectively before the adjustment of salt iodine content,and 97.44％ and 96.14％ after the adjustment.The mean of salt iodine after the adjustment (21.96 mg/kg) was significantly lower than that of 2010 (31.45 mg/kg,t =66.29,P ＜ 0.05).The goiter prevalence of children aged 8-10 by thyroid palpation was 0.92％ in 2010,while it was 1.89％ by ultrasonic in 2014,2015.There was significant difference in the iodine nutritional status of children in 2010 (191.0 μg/L) and in 2014,2015 (173.0 μg/L,Z =3.56,P ＜ 0.05).The difference of iodine nutritional status in pregnant women between pre-adjustment (154.0 μg/L) and post-adjustment (130.4 μg/L) was also significant (Z =5.54,P ＜ 0.05).The median of water iodine was 5.4 μg/L after the adjustment.There were 52 towns with medians of water iodine below 10 μg/L.Conclusions The coverage rate of iodized salt and the edible rate of qualified iodized salt have all met the national standard before and after the adjustment of salt iodine content.The mean of salt iodine during 2014,2015 is significantly lower than that of 2010.Before and after the adjustment,the goiter rates of children aged 8-10 are all below 5％.The adjustment of salt iodine content is more suitable to children aged 8-10 than to pregnant women currently.It is suggested that pregnant women eat more foods rich in iodine.

The author introduces the basic concepts of microsatellite and population genetics and its characteristics, expounds the application of these theories for population genetic structure and genetic diversity, gene flow and evolutionary significant unit ESU division research. This paper discuss its applicationin study of genetic causes, origin of cultivation, different regional origins of geoherbs, aiming at providing a new theory and method for geoherbs.
Drugs, Chinese Herbal ; Evolution, Molecular ; Genetic Markers ; genetics ; Genetic Techniques ; Geography ; Microsatellite Repeats ; genetics

OBJECTIVETo observe the short-term clinical effectiveness of bone ring graft technique and to summarize the key points of related surgical operation to provide comprehensive clinical guidelines.

METHODSFifteen patients with severe alveolar bone absorption were selected to receive bone ring grafting and immediate dental implant. Final fixed prostheses were cemented five months after initial implantation. Cone beam CT scans were conducted on all subjects before the procedure, as well as four months post-operation to evaluate alveolar bone height and level of bone height and absorption around the implants. Four to six months after prosthesis installation, each implant's Jemt classification, gingiva attachment, and probing depth (PD) were analyzed. The difference of PD between implants and adjacent teeth, as well as the difference of the bone absorption between labial and lingual sides, was compared. The survival rate of the bone ring and the retention rate of implants were calculated. Complications and patient satisfaction were also investigated.

RESULTSBone graft survival rate was 94.4% and dental implantation retention rate was 100% four months post-operation. Average bone level increase was (6.06 +/- 1.06) mm, average bone absorption was (1.33 +/- 0.84) mm, and average bone thickness at the neck of the dental implant body was (6.94 +/- 0.73) mm. Approximately 4 to 6 months after crown restoration, average bone level increase was (5.62 +/- 1.03) mm, average bone absorption was (1.51 +/- 1.02) mm, and average bone thickness at the neck of the dental implant body was (6.77 +/- 0.72) mm. The PD around the implant body and the adjacent teeth was statistically insignificant. No major post-operative complication was observed, restorations were successful, and patient satisfaction level was high.

CONCLUSIONBone ring graft technique and immediate dental implantation are relatively simple to perform, and these techniques facilitate reduction in required treatment time. Short-term effect is reliable and satisfactory, whereas long-term outcomes require further follow up and study.

Alveolar Bone Loss ; Bone Transplantation ; Crowns ; Dental Implantation, Endosseous ; Dental Implants ; Dental Prosthesis Design ; Dental Prosthesis, Implant-Supported ; Dental Restoration Failure ; Humans

OBJECTIVEThis study aimed to investigate the value of child oral health for Chengdu parents, their intentions, and factors influencing their decision to acquire oral insurance coverage for their childrens.

METHODSA total of 562 Chengdu parents were interviewed using questionnaires by convenient sampling, and the results were analyzed using SPSS 20.0.

RESULTSThe age of children (B = -1.741, P = 0.004), age of parents (B = 2.031, P = 0.003), level of oral discomfort (B = 0.569, P = 0.000), incurring/not incurring oral care expenses in the previous year (B = 1.897, P = 0.014), the last time parents' had teeth cleaned (B = 0.777, P = 0.006), and acquiring/not acquiring commercial insurance coverage (B = 1.632, P = 0.031) significantly influenced the intention of acquiring child oral insurance.

CONCLUSIONChild oral health, health and insurance awareness of parents, and other factors influenced the intention of parents to purchase oral insurance coverage for their children, which were significant to establish pediatric dental insurance.

Child ; China ; Dental Care ; Health Expenditures ; Humans ; Insurance, Dental ; economics ; Oral Health ; economics ; Parents ; Surveys and Questionnaires

Fourteen compounds were isolated by column chromatography from the ethyl acetate extract of the seeds of Brassica campestris. Their structures were elucidated by physicochemical properties and spectroscopic data analysis. The isolated compounds were respectively identified as (5Z,7E)-4, 4-dimethyl-5-acetyl-5, 7-nonadienoic acid (1), indole-3-carboxaldehyde (2), blumenol A (3), vinylsyringol (4), sinapinic acid (5), sinapic acid ethyl ester (6), protocatechuic acid (7), crinosterol (8), campesterol (9), 7-oxo-stigmasterol (10), kaempferol (11), 2,5-dihydroxybenzoic acid (12), syringic acid (13) and daucosterol (14). Compound 1 was a new compound and the other compounds were isolated from this plant for the first time except for compounds 4, 5 and 13.
Brassica ; chemistry ; Drugs, Chinese Herbal ; chemistry ; isolation & purification ; Molecular Structure ; Seeds ; chemistry ; Spectrometry, Mass, Electrospray Ionization

OBJECTIVETo analyze the clinical effect and related risk factors of Gartland type II-III supracondylar fractures of humerus in children in the emergency closed reduction and percutaneous Kirschner wire fixation.

METHODSFrom January 2008 to June 2013,112 children of Gartland type II to III supracondylar humeral fractures were treated in children in emergency closed reduction and percutaneous K-wire fixation, including 72 males and 40 females with an average age of 6.2 years old ranging from 2 to 11 years old. Among them,74 cases were in Gartland type II fractures,38 cases were in type III; The duration from injury to surgery time was 2.5 to 8 hours (averaged 4.6 hours). Elbow cast was applied after operation with the elbow extended of 100 degrees for 4 to 6 weeks, then the gypsum and Kirschner wires were removed.

RESULTSAll patients were follow-up from 6 to 60 months (averaged 12 months). All fractures reached clinical healing. The final follow-up was assessed by Flynn criteria, the result was excellent in 86 cases, good in 23 cases, general in 3 cases, excellent and good rate was 97.3%. Three patients had mild cubitus varus deformity without orthopedic treatment. No pin tract infections, iatrogenic ulnar nerve injury, compartment syndrome, and complications such as Volkmann ischemic contracture occurred.

CONCLUSIONClosed reduction and percutaneous Kirschner wire fixation had advantages of exact reduction, firm fixation, fewer complications ,less pain in children undergoing emergency surgery, and.high success rate, so it is a safe and efficient treatment for humeral supracondylar fracture in children.

Bone Wires ; Child ; Child, Preschool ; Female ; Fracture Fixation, Internal ; instrumentation ; methods ; Humans ; Humeral Fractures ; surgery ; Male ; Reconstructive Surgical Procedures

Objective To evaluate the clinical value of susceptibility weighted imaging (SWI)in full-term neonatal hypoxic ische-mic encephalopathy (HIE).Methods Sixty-three neonates with HIE were collected and scanned by Siemens 3.0T superconducting MR scanner.Routine axial conventional MRI scan and axial SWI scan were conducted.Results In 63 neonates,a total of 29 cases with different degree of intracranial hemorrhage were scanned with SWI sequence.A total of 1 5 1 intracranial hemorrhages were found.Conventional MRI sequences were performed in 1 5 cases with different degree of intracranial hemorrhage.Only 78,43 and 88 hemorrhages were found by T1 WI,T2 WI and T2 Flair sequences,respectively.SWI were significantly superior to conventional MRI sequences in displaying the scope and boundary definition of hemorrhage.Conclusion SWI sequence is obviously better than the con-ventional MRI sequences in bleeding detection and displaying hemorrhage stove,and it provides a powerful imaging method for the clinical diagnosis and treatment.