Objective To study the influence of bFGF gene transfected bone marrow-derived mesenchymal stem cells (BMSCs) on the inflammatory cytokines of COPD rat. Methods The BMSCs were separated from SD rat and cultured and then bFGF gene was imported to BMSCs by liposome transfection method. The samples were prepared into six groups: normal control group, COPD group (A), BMSCs group (B), pcDNA3.1-BMSCs group (C), bFGF-pcDNA3.1-BMSCs group (D), and bFGF group (E). The expressions of TNF-α and IL-1β by QRT-PCR were detected. Results Compared with COPD group, TNF-α and IL-1β genes from groups B to D dropped significantly (P < 0.05). The changes of TNF-α and IL-1β genes among groups B to D showed no significant difference (P > 0.05). Conclusion BFGF transfected BMSCs, sample BMSCs and pcDNA3.1 transfected BMSCs can inhibit the expression of inflammatory cytokines of TNF-α and IL-1β, but there is no obvious advantage in comparison to bFGF transfected BMSCs and sample BMSCs in respect of inhibiting the expression of inflammatory cytokines of TNF-α and IL-1β.

Objective Bone marrow mesenchymal stem cells ( BMSCs) , a kind of stem cells with multiple differentiation po-tentials, exist in the bone marrow and other organizations.This study aimed to investigate the repairing effect of the exogenous basic fi-broblast growth factor ( bFGF) against chronic obstructive pulmonary disease ( COPD) and its action mechanism, and to determine the expression of the bFGF gene in transfected rat BMSCs. Methods BMSCs were isolated, cultured and identified.The recombinant plasmid bFGF-pcDNA3.1 was constructed and sequenced.Liposome-mediated bFGF-pcDNA3.1 plasmid was transfected into the BM-SCs of the rat (bFGF-pcDNA3.1 transfection group), liposome-mediated pcDNA3.1 transfected into the BMSCs (pcDNA3.1 transfec-tion group) , and untransfected BMSCs used as the control.G418 screening was performed for 14 days.The gene and protein expres-sions of bFGF were determined by qRT-PCR and Western blot. Results The full-length sequence of the bFGF gene was consistent with that of the GenBank.The expression of the bFGF gene was significantly higher in the bFGF-pcDNA3.1 transfection group (7.028 ±0.568) than in the pcDNA3.1 transfection group (1.000 ±0.082) and the non-transfection control (1) (P<0.01), but with no statistically significant difference between the latter two groups (P>0.05).The expression of the bFGF protein was also re-markably higher in the bFGF-pcDNA3.1 transfection group (1.017 ±0.054) than in the pcDNA3.1 transfection group (0.217 ± 0.009) and the non-transfection control (0.165 ±0.013) (P<0.05), with no statistically significant difference between the latter two groups (P>0.05). Conclusion Mediated by the liposome reagent, the recombinant eukaryotic expression vector bFGF-pcD-NA3.1 can be transfected into rat BMSCs and expresses the bFGF gene and protein.

Objective To analyze the feasibility and the diagnostic yield of double-balloon enteroscopy (DBE) examinations for small bowel bleeding (SBB). Methods A retrospective analysis was conducted on 52 cases with small bowel bleeding between June 2015 and July 2016,and all was treated with DBE. therapeutic outcome, complications and follow-up were compared. Results The study included 52 patients (28 males and 24 females) with an average age of (51.0 ± 17.0) years (16~82 years) and onset time (8.3 ± 4.0) days (1~14 days) . 25 using oral route and 21 using the anal route, 1 using the colon ifstula route, a combination of using oral and anal (n=4).The bleeding source was identiifed in 40 of 52 patients (76.9%), complication rate was 5.8%(3/52), and rebleeding rate was 16.7%(2/12). The endoscopic treatments included polypectomies (n=5), argon plasma coagulation (APC, n=2), surgical treatment (n=14, 26.9%), and foreign-body extraction (n=1). Patients were diagnosed with the following:tumors (n=9, 17.3%), ulcers (n=9, 17.3%), Crohn’s disease (n=7, 13.5%), polyps (n=5, 9.6%), diverticulum (n=4, 7.7%). Patients with small bowel bleeding were followed up for a mean period of (8.3±2.0) months (range 4~10 months), 2 deaths were dying from small bowel cancer. Conclusions DBE is a safe endoscopic technique for patients with small bowel bleeding and can be safely carried out even after Roux-en-Y operation. Tumors, ulcers and Crohn’s disease are very common causes of SBB. The rebleeding rate after a negative DBE is considerable, especially small bowel vascular lesions.

ObjectiveTo evaluate the feasibility of artificial joint replacement in patients complicated with type 2 diabetes mellitus(DM).Methods18 patients with DM accepted the artificial joint replacement after fracture at the femoral neck.They were followed-up with the Harris hip score and radiographs for average 45.5 months(range 23～86 months).The fasting blood glucose(FBG) levels and other associated indexes were monitored during the periods after operation.ResultsAll the patients can walk freely except 3 elder patients that walk with the help of crutch.Radiographic studies showed that 13 cases were excellent,osteophytes appeared around acetabulum in 4 cases,among which 2 cases had the decrease in the hip joint space,and the subsidence appeared in other 2 cases but it was less than 2 mm.The mean of Harris hip score was(81.9±14.8).The body weight index and the level of PBG were negatively correlated with the outcomes of Harris hip score.ConclusionPatients with type 2 diabetes mellitus may accept artificial joint replacement well.It is very important to maintain the body weight and the level of PRG in a normal range after operation.

Objective To explore the clinic value of the vocal acoustics on voice evaluation in larynx leukoplakia pa?tients. Methods Dr. Speech software was used to perform voice acoustic analysis and deduce EGG parameters in 48 sub?jects with larynx leukoplakia and 50 normal subjects. Voice acoustic analysis parameters (Jitter, Shimmer, NNE, HNR, SNR, MPT), EGG parameters ( EGG-Jitter、EGG-Shimmer、EGG-NNE、EGG-HNR、EGG-SNR, CQP,CIP) and EGG wave?form were compared between two groups. Results For voice acoustic analysis, Jitter, Shimmer, NNE in larynx leukoplakia group were higher than those in normal group while HNR, SNR in larynx leukoplakia group were lower than those of normal group. What’s more,MPT in larynx leukoplakia group was obviously shorter than that in normal group with, statistically sig?nificant difference (P<0.05). For EGG analysis, EGG-Jitter, EGG-Shimmer, EGG-NNE were higher in larynx leukoplakia group than those in normal group with significant difference (P<0.05). EGG-HNR and EGG-SNR in larynx leukoplakia group were lower than those in normal group. Furthermore, CQP and CIP in larynx leukoplakia group were higher than those normal group with statistically significant difference (P<0.05). Most patients’(72.9%) EGG waveform showed gradually ac?celerate phase velocity and fast close phase, which represent a spike-like shape. Conclusion Voice acoustic analysis com?bined with EGG provide objective indicators to assess degree of hoarseness, and to provide sonic evidences for prevention, recurrence, assessment and pronunciation correction of the larynx leukoplakia.

OBJECTIVE To investigate the effect of obstructive sleep apnea hypopnea syndrome(OSAHS) on the quality of voice. METHODS Electroglottography (EGG) method was used for detecting the vocal cords vibration, waveforms of electroglottography and voice parameters such as Jitter, Shimmer, normalized noise energy (NNE), contact quotient(CQ), contact index (CI), contact quotient perturbation(CQP), contact index perturbation(CIP), and the in 82 OSAHS patients and 53 healthy subjects. The voice parameters were analyzed with Dr.Speech software, RESULTS While in normal pronunciation, the Jitter, Shimmer, NNE, CQP and CIP were (1.037±1.493)%, (5.627±1.872)%, (-16.109±1.719)dB, (2.638±0.633)% and (166.789±30.492)% in 22 mild OSAHS patients, (1.578±0.362)%, (8.478±1.635)%, (-11.517±1.614)dB, (6.043±0.936)% and (255.210±91.224)% in 24 moderate OSAHS patients, and (2.138±1.384)%, (14.888±4.089)%, (-7.677±2.151)dB, (11.749±7.164)% and (431.233±259.266)%in 36 severe OSAHS patients respectively. They were all higher than those in 53 normal subjects as (0.517±0.303)%, (3.299±2.196)%, (-21.933±5.477)dB, (1.322±0.942)% and (58.834±131.849)%. The regularity of vocal fold vibration in all patients with OSAHS was seriously out of whack. EGG waveform was irregular. CONCLUSION The OSAHS patients have structural changes in their upper airway, it will cause non-physiological breathing and lead dry of the vocal cord mucosa and weak elasticity. Their EGG parameters will get higher and vibration will be irregular seriously. We should pay attention to the voice qualities of the OSAHS patients and let them receive treatment as early as possible.

Objective To investigate the voicing acoustic characteristics of sulcus vocalis patients with mini-mum glottal area(MGA) .Methods 60 normal subjects (30 male ,30 female) ,and 62 subjects with sulcus vocalis (33 male and 29 female)were recruited .They all had stroboscopic laryngoscopy ,and had MGA measured when say-ing /i:/using software supporting KIPS .The acoustic parameters consisted of vocal cord fundamental frequency (F0) ,jitter and shimmer ,normalized noise energy ( NNE) ,harmony to noise ratio (HNR) and signal noise ratio (SNR) ,maximum phonation time(MPT) and respectively make correlation analysis with voice MGA .Results The voicing MGA of male patients with sulcus vocalis was 434 .74 ± 112 .83 ,larger than the males with normal vocalis 298 .25 ± 93 .63 .This was statistically significant (P<0 .05) .The voicing MGA of females with sulcus vocalis was (484 .75 ± 143 .91) ,significantly larger than those of females with normal vocalis (293 .43 ± 93 .73) and the differ-ence was statistically significant (P<0 .05) .The voicing MGA on both males and females with sulcus vocalis was noticeably relation to the F0 (r=0 .972 ,P<0 .05) and (r=0 .928 ,P<0 .05) ,Jitter (r=0 .978 ,P<0 .05) and (r=0 .910 ,P<0 .910) and Shimmer (r=0 .973 ,P<0 .05) and (r=0 .921 ,P<0 .05) ,normalized noise energy(r=0 .883 ,P<0 .05) and (r=0 .960 ,P<0 .05) ;and negative relation to the signal noise ratio (r= -0 .947 ,P<0 .05) and (r = -0 .957 ,P<0 .05) ,signal noise ratio (r= -0 .959 ,P<0 .05) and (r= -0 .944 ,P<0 .05) ,max-imum phonation time (r= -0 .891 ,P<0 .05) and (r= -0 .936 ,P<0 .05) .Conclusion Patients with pathological sulcus vocalis have glottal areas larger than normal .Acoustic analysis of the voices of the sulcus vocalis can be used as an objective laboratory examination .

Adenine ; analogs & derivatives ; Fanconi Syndrome ; Humans ; Organophosphonates

Objective:To investigate the distribution and drug resistance of anaerobic bacteria in the patients with oral and maxillofacial infection.Methods:Aerobic and anaerobic bacteria cultures from 61 specimens of pus from the patients with oral and maxillofacial infection in the Department of Oral and Maxillofacial Surgery,Peking University School of Stomatology were identified.The culture type was evaluated by API 20A kit and drug resistance test was performed by Etest method.The clinical data and antibacterial agents for the treatment of the 61 cases were collected,and the final outcomes were recor-ded.Results:The bacteria cultures were isolated from all the specimens,with aerobic bacteria only in 6 cases (9 .8%),anaerobic bacteria only in 7 cases (1 1 .5%),and both aerobic and anaerobic bacteria in 48 cases (78.7%).There were 55 infected cases (90.2%)with anaerobic bacteria,and 81 anaero-bic bacteria stains were isolated.The highest bacteria isolation rate of Gram positive anaerobic bacteria could be found in Peptostreptococcus,Bifidobacterium and Pemphigus propionibacterium.No cefoxitin, amoxicillin/carat acid resistant strain was detected in the above three Gram positive anaerobic bacteria. The highest bacteria isolation rate of Gram negative anaerobic bacteria could be detected in Porphy-romonas and Prevotella.No metronidazole,cefoxitin,amoxicillin/carat acid resistant strain was found in the two Gram negative anaerobic bacteria.In the study,48 patients with oral and maxillofacial infection were treated according to the results of drug resistance testing,and the clinical cure rate was 81 .3%. Conclusion:Mixed aerobic and anaerobic bacteria cultures are very common in most oral and maxillofa-cial infection patients.Anaerobic bacteria culture and drug resistance testing play an important role in clinical treatment.

AIM: To explore if all trans retinoic acid (atRA) retards glomerulosclerosis of rats with 5/6 nephrectomy. METHODS: Wistar male rats were operated by subtotal nephrectomy and were randomly divided into A1 (5 mg?kg~(-1)?d~(-1) atRA), A2 (10 mg?kg~(-1)?d~(-1) atRA), A3 (20 mg?kg~(-1)?d~(-1) atRA) and NX (vehicle) groups. Each group included 8 rats. 8 health rats were assigned as sham-operation group (sham group). Animals were sacrificed 10 weeks after treatment. The concentrations of plasma atRA were measured by reversed phase high performance liquid chromatography (RP-HPLC). Glomerulosclerosis was evaluated by glomerulosclerosis index system. The expression of transforming growth factor-beta 1 (TGF?1) was measured by renal immunohistochemical staining and Western blotting. RESULTS: The concentrations of atRA in atRA groups were much higher than that in NX and sham groups. Compared to NX, the remnant kidney sclerosis was ameliorated significantly in A1, A2 and A3 groups. The expressions of TGF?1 decreased parallelized to the levels of glomerulosclerosis. CONCLUSION: atRA has a beneficial effect on retarding the progression of renal fibrosis in the 5/6 nephrectomic rats, possibly through downregulating the glomerular TGF?1 expression.