3.Alzheimer's disease and sleep disorders
Rongyan ZHU ; Peng GUO ; Wei ZHANG
Chinese Journal of Geriatrics 2017;36(1):1-4
5.Clinical application of nuclear medicine imaging in amyotrophic lateral sclerosis
Peng FU ; Lingge WEI ; Ainan GUO
Chinese Journal of Nuclear Medicine and Molecular Imaging 2014;34(3):253-256
Amyotrophic lateral sclerosis (ALS),a neurodegenerative disorder,is subtle in disease onset,difficult to diagnose,and fast-growing at progression.There.are at present little specific neurological imaging characteristics of ALS.Functional brain imaging techniques,such as SPECT and PET,were the early tools for investigation of ALS.The application of pixel-based analysis software (such as SPM) renders research in this area more convenient and objective.In recent years,improvement in brain receptor PET imaging has demonstrated its important value in the early diagnosis of ALS and evaluation of cognitive impairment.
6.Study on efficacy of Chinese herbal drugs on improving endometrial receptivity detected by using trans-vaginal three-dimensional color Doppler ultrasound in patients with thin endometrium
Hong HU ; Xiuying YE ; Yiman FU ; Wei WEI ; Peng GUO
Chongqing Medicine 2017;46(19):2635-2637
Objective To explore the clinical value of transvaginal three-dimensional color Doppler ultrasound in assessing effects of Chinese herbal drugs on improving endometrial receptivity in patients with thin endometrium.Methods A total of 76 cases of patients diagnosed with thin endometrium in Jiangbei District Hospital of Traditional Chinese Medicine from June 2015 to October 2016 were selected and treated with Chinese herbal prescription for three months.The endometrial thickness,endometrial volume and blood flow indexes before and after treatment were measured by using transvaginal three-dimensional color Doppler ultrasound.Results After 3 months treatment,the endometrial thickness and endometrial volume were increased,and the pulse index (PI) and resistance index (RI) of endometrial blood flow were decreased,compared with those before treatment,there were statistically significant differences(P<0.05).The results of three-dimensional color Doppler ultrasound indicates that after 3 months treatment the vascularization index (VI),flow index (FI) and vascularization flow index (VFI) were significantly higher than those before treatment,there were statistically significant differences (P<0.05).Conclusion The Chinese herbal prescription could increase the thickness and volume of endometrium,augment blood supply,and improve endometrial receptivity significantly.Transvaginal color three-dimensional Doppler ultrasound is a convenient and objective method for evaluating clinical efficacy of Chinese herbal prescription in patients with thin endometrium,which has high practical value.
7.Preparation and anti-bacterial tests of silver-modified titanium surface.
Juan LIAO ; Wei FEI ; Jun GUO ; Peng LI
West China Journal of Stomatology 2014;32(3):303-305
OBJECTIVETo deposit silver nanoparticles on a titanium surface to obtain antibacterial properties. To reduce the incidence of peri-implantitis, and improve the success rate of implantation.
METHODSA silver nanoparticle-modified titanium (Ti-nAg) surface was prepared using silanization method, and its surface was characterized by using X-ray photoelectron spectroscopy (XPS) and energy dispersive X-ray spectrometer (EDX). Two species of bacteria, namely, Staphylococcus aureus and Escherichia coli, were used to test the antibacterial effect of Ti-nAg surface.
RESULTSScanning electron microscope (SEM) revealed that a small quantity of silver nanoparticles were deposited on the titanium surface. XPS analyses revealed that 6.8% of silver was present on the titanium surface. After 24 h of incubation, 94.23% of Staphylococcus aureus and 95.34% of Escherichia coli were killed on the Ti-nAg surface.
CONCLUSIONResults suggest that silver nanoparticle-modified titanium is a promising material with an antibacterial property that may be used as an implantable biomaterial.
Anti-Bacterial Agents ; Bacteria ; Dental Implants ; Escherichia coli ; Prostheses and Implants ; Silver ; Staphylococcus aureus ; Titanium
9.Treatment of chronic mallet finger deformity with minor bone anchors and palmaris longus tendon graft.
Hui-huang PENG ; Jian-wei WU ; Guo-jing YANG
China Journal of Orthopaedics and Traumatology 2015;28(11):1017-1020
OBJECTIVETo explore the clinical effects of minor bone anchors and palmaris longus tendon graft in treating chronic mallet fingers deformity.
METHODSFrom January 2008 to June 2013, 26 patients with chronic mallet fingers deformity were treated with minor bone anchors and palmaris longus tendon graft. There were 18 males and 8 females, aged from 18 to 52 years old with an average of (32.0±1.3) years. Among them, 8 cases caused by machine injury, 6 cases by fall injury, 6 cases by sprain from fight, 4 cases by tendon spontaneous rupture, 2 cases by knife trauma. There was no tendon attachment of extensor tendon check in 16 cases, and with 0.3 to 0.5 cm tendon attachment in 10 cases. All patients had the flexion deformity and the disability of dorsiflexion activity. During operation, the distal interphalangeal joint was fixed in 10° to 20° dorsiflexion by a Kirshner wire, the minor bone anchor was used to reconstruct the extensor tendon insertion, the palmaris longus tendon slice was transplanted the decayed area of extensor tendon insertion. Four weeks postoperatively, the Kirshner wire was removed and the plaster external fixation was used, and the patient began function exercises. Postoperative complications were observed and fingers functions were assessed according to Dargan standard.
RESULTSThe patients were followed up from 6 to 14 months with an average of (5.0±0.3) months. Wound superficial infection occurred in 2 cases, the skin pressure ulcer in 2 cases, joint activities disability in 1 case; these symptoms got improvement after symptomatic treatment. Traumatic arthritis occurred in 2 cases, 1 case was improved after treatment, and 1 case had chronic pain for a long time. No internal fixation loosening or breakage and tendon rupture were found. According to Dargan standard to evaluate the finger function, 17 cases got excellent results, 8 good, and 1 poor.
CONCLUSIONIt is an effective way to treat the chronic mallet finger deformity using minor bone anchors and palmaris longus tendon graft, and the method has advantages of reliable fixation, easy operation, satisfactory effect and less complication.
Adolescent ; Adult ; Female ; Finger Injuries ; surgery ; Fracture Fixation, Internal ; Hand Deformities, Acquired ; surgery ; Humans ; Male ; Middle Aged ; Suture Anchors ; Tendon Transfer
10.Lethal effects of nanoliposome encapsulated cisplatin on Saos-2 cells and its distribution in nude mice bearing human osteosarcoma xenografts
Guowen WANG ; Wei GUO ; Xiaodong TANG ; Changliang PENG ; Hui ZHAO
Journal of Peking University(Health Sciences) 2003;0(05):-
Objective:To investigate the killing effect of nanoliposome encapsulated cisplatin(NLE-CDDP) on human osteosarcoma cell line Saos-2 and explore the distribution of platinum(Pt) in tumor-bearing mice.Methods: Saos-2 cells were cultured at different concentrations of NLE-CDDP.MTT assay,inverted microscopic observation and flow cytometry assay(FCM)were used to observe the antiproli-ferative effect of NLE-CDDP on the human osteosarcoma cells.Antitumor effect of NLE-CDDP was determined using the xenografts models of human osteosarcoma cell Saos-2 in nude mice.The Pt concentration in the tissues of tumor-transplanted mice was determined by atomic spectrophotometer.Results: When treated at different concentrations of NLE-CDDP for 24-96 hours,the survival rate of Saos-2 cells decreased significantly(P