Objective To investigate whether clinical,endocrine,and sonographic characteristics of infertile women with polycystic ovary syndrome (PCOS) could predict the ovarian response to clomiphene citrate (CC) medication.Methods A prospective study was conducted,85 women with PCOS were given CC 50 mg per day for 5 days.In the case of an absent response,doses were increased to 100 daily in subsequent cycles.Clinical,endocrine,and sonographic characteristics were compared between responders and nonresponders.Results The cycle history (oligomenorrhea or amenorrhea) and antral follicle count (AFC) were significantly different in responders from those in nonresponders (P ＜ 0.05).There were no differences in age,serum testosterone,follicle stimulating hormone (FSH),luteotropic hormone (LH),body mass index (BMI),insulin resistant index (HOMA-IR),and glucose and insulin levels between the two groups (P ＞ 0.05).In addition,multivariate logistic regression analysis indicated that cycle history and AFC were the predictors of ovarian response to CC treatment.Conclusions The cycle history and AFC can be used as the simple and effective parameters to predict ovarian response to CC treatment in PCOS patients.

Child ; China ; Humans ; Rheumatic Diseases

Objective To understand a cancer hospital inpatient care Ningxia quality of service perceived status quo.Methods Servqual model-based,self-designed Expect Inpatient Nursing Service Quality Perception Questionnaire was used to investigate 160 hospitalized patients and expected to build expectations oncology inpatients quality of care and services-dimensional perception matrix (IPA matrix).Results By analyzing sensible quality (SQ) value and IPA matrix of the Servqual questionnaire,all items except for treating equally and recommend the hospital showed SQ＜0,that was,the actual feelings of patients were less than expected,and there was statistical difference between the actual feelings and expected feelings in the quiet ward,health guide,care level (t=2.963,2.020,2.020,P ＜0.05).IPA matrix showed that ward quiet,health guidance,care level was the priority problems for the hospital.Life Care,protection of privacy,psychological care,level of service,pay the money reached care were the minor priority problems.Conclusions Servqual Model and IPA matrix combination can help to understand the gap between expectations and perception of nursing service,identify problems improvement priorities,identify weaknesses in care for hospital managers,and develop fine effective theory.

OBJECTIVETo investigate clinical effects of three-column reconstruction via single posterior approach for the treatment of unstable thoracolumbar fractures accompanied by posterior column injury.

METHODSFrom December 2008 to May 2010,three-column reconstruction via posterior approach was implemented to 21 patients with unstable thoracolumbar fractures accompanied by posterior column injuries. There were 13 males and 8 females, ranging in age from 23 to 54 years old(averaged,35.5 years old). Injured vertebrae: 1 patient had injury in T11, 4 patients had injuries in T12, 8 patients had injuries in L1, 5 patients had injuries in L2, 3 patients had injuries in L3. The Cobb angle was (25.34 +/- 3.42) degrees. The operation time,blood loss during operation, Cobb angle and the bony fusion were observed.

RESULTSTwenty-one patients were followed up, and the duration ranged from 24 to 27 years old, with an average of 25.6 months. The operation time ranged from 135 to 275 min, with a mean of 185 min. The blood loss during operation ranged from 700 to 1 650 ml (averaged, 870 ml). All the patients had complete decompression. Postoperative Cobb angle was (4.01 +/- 2.03) degrees, and (4.34 +/- 2.38) degrees at the latest follow-up. All the patients got bony fusion.

CONCLUSIONTo the patients with unstable thoracolumbar fractures accompanied by posterior column injuries, three-column reconstruction via single posterior approach has both anterior approach and posterior approach advantages, which can obtain excellent clinical outcomes.

Adult ; Female ; Follow-Up Studies ; Humans ; Lumbar Vertebrae ; injuries ; Male ; Middle Aged ; Reconstructive Surgical Procedures ; adverse effects ; methods ; Spinal Fractures ; diagnostic imaging ; surgery ; Thoracic Vertebrae ; injuries ; Tomography, X-Ray Computed ; Treatment Outcome ; Young Adult

Objective To explore the effect of iron chelators on labile iron pool and expression of apoptosis associated genes in cells of K562, an erythroleukemia cell line.Methods K562 cells were incubated at 37 ℃ in RPMI 1640 containing 10% heat-inactived fetal bovine serum in an saturated humidity and 5% CO_2 incubator. K562 cells were incubated with different concentrations of desferro-(xamine(DFO)). The study groups were divided as following: DFO group, iron+DFO group and the control group. Following indices were detected which included apoptosis by flow cytometry (FCM) assay, expression of Rb, c-myc, bax mRNA by RT-PCR. The intracellular LIP was measured with a fluorimetric assay using the metalsensitive probe calcein-AM.Results 1. The viability of K562 cells incubated with different concentrations of DFO was lower than that of control group at 12 h,24 h and 48 h (P

Background Researches showed that wild-type p53(wtp53)and Rb94 genes inhibit the growth of retinoblastoma(RB),and these genes are involved in signal pathway in the induction and maintenance of cellular senescence.Thus the combination of two genes to inhibit growth of RB is concerned.Objective This study was to observe the inhibitory effect of the co-transfection of Rb94 and wtp53 gcnc into subretina on RB with ultrasound microbubble.Methods HXO-Rb44 suspension was subretinally injected to establish the RB model in 40 SPF female Balb/c nude mice.The RB models were randomized into model control group,wtp53 group,Rb94 group and wtp53+Rb94 group,and 0.1 ml relevant gene microvesicle suspension was injected via caudal vein in the different groups,but no any gene was used in the model control group.Seven days after modeling,followed by 0.5 W/cm2ultrasonic wave irradiated the eyeballs immediately for 4 seconds ×2 times and interrupted for 24 seconds.Eyeballs were extracted 7 days after gene transfection,and the expressions of wtp53 mRNA and Rb94 mRNA in tumor tissuc were detected by RT-PCR,and wtp53 and Rb94 protein in tumor tissue were assayed using Western blot.Immunochemistry was used to exam the VEGF expression,and TUNEL was used to evaluate the apoptosis of the tumor cells.Results The model successful rate after HXO-Rb44 suspension was 80％ (32/40)and obvious malformation cells were seen under the light microscope.In 7 days after gene transfection,no response band for wtp53 mRNA and Rb94 mRNA were found.The relative expression valuc of wtp53 mRNA was 0.65±0.07 in the wtp53 group,and that in wtp53+Rb94 group was 0.32±0.02,showing a significant difference between them (t =11.743,P =0.000).Rb94mRNA relative value was 0.42 ±0.03 in Rb94 group,and that in the wtp53 + Rb94 group was 0.23 ± 0.03,with a significant difference(t=5.041,P=0.001).The response bands of wtp53 and Rb94 proteins were seen in wtp53group,Rb94 group and wtp53+Rb94 group.Immunochemistry showed that the positive reactive intensity for VEGF in tumor tissue was obviously weaker in wtp53+Rb94 group than that in the wtp53 group,Rb94 group and model control group.Apoptotic index(Al) was 37.35±2.14 in the wtp53+Rb94 group,showing a significant increase in comparison with model control group (0.46 ± 0.05),wtp53 group (5.05 ± 0.80) and Rb94 group (6.43 ± 1.02) (t =-34.395,-28.206,-26.006,P＜0.01).Conclusions Ultrasound microvesicle enable double gene transfecting into RB tumor tissue,and Rb94 gene cooperation with wtp53 gene enhance the inhibitory effect on RB by promoting the apoptosis of RB cells.

This study was aimed to explore the features of clustered regularly interspaced short palindromic repeats (CRISPR) structures in Shigella by using bioinformatics. We used bioinformatics methods, including BLAST, alignment and RNA structure prediction, to analyze the CRISPR structures of Shigella genomes. The results showed that the CRISPRs existed in the four groups of Shigella, and the flanking sequences of upstream CRISPRs could be classified into the same group with those of the downstream. We also found some relatively conserved palindromic motifs in the leader sequences. Repeat sequences had the same group with corresponding flanking sequences, and could be classified into two different types by their RNA secondary structures, which contain "stem" and "ring". Some spacers were found to homologize with part sequences of plasmids or phages. The study indicated that there were correlations between repeat sequences and flanking sequences, and the repeats might act as a kind of recognition mechanism to mediate the interaction between foreign genetic elements and Cas proteins.
Base Sequence ; Clustered Regularly Interspaced Short Palindromic Repeats ; Computational Biology ; Genome, Bacterial ; Plasmids ; Shigella ; genetics

OBJECTIVEThrough orthodontic tooth movement in the pregnant and non-pregnant rats, to investigate the osteopontin (OPN) mRNA expression pattern in the periodontal tissues, and to probe its possible roles in orthodontic periodontal remodeling.

METHODSFixed appliances were used to mesially move the rats' maxillary first molars. In situ hybridization method was used to detect the expression changes of OPN mRNA in periodontal tissues.

RESULTSCompared to the non-pregnant rats, the expression of OPN mRNA in periodontal cells of the pregnant rats was more intensive. During the gestational period, the expression intensity had significant difference at different pregnant stages. The highest expressions occurred at the mid-pregnant stage, less at the late-stage and lest at the early-stage.

CONCLUSIONUnder the pregnant state, the expression of OPN mRNA in periodontal tissues may be up-regulated by increased serum progesterone level.

Animals ; In Situ Hybridization ; Male ; Molar ; Osteopontin ; RNA, Messenger ; Rats ; Rats, Sprague-Dawley ; Tooth Movement Techniques

Objective To assess the relationship between serum vitamin D and autoimmune thyroid disease.Methods Subjects included total 520 persons receiving regular health examination,and serum calcium,phosphorus,parathyroid hormone (PTH),thyroid peroxidase autoantibody (TPOAb) and 25-dihydroxy vitamin Ds was measured.The incidence of 25-dihydroxy vitamin D3 deficiency (≤30 μ g/L)was observed.The relationship between 25-dihydroxy vitamin D3 deficiency and autoimmune thyroid disease was analyzed.Results The serum 25-dihydroxy vitamin D3 of all the subjects was (24.47 ± 7.21) μ g/L,and the incidence of 25-dihydroxy vitamin D3 deficiency (≤30 μg/L) was 61.15％ (318/520),and the positive rate of TPOAb was 21.54％ (112/520).The proportion of TPOAb ＞ 50 kU/L or ＞ 100 kU/L in subjects with 25-dihydroxy vitamin D3≤30 μ g/L was higher than that in subjects with 25-dihydroxy vitamin D3 ＞ 30 μg/L [25.79％(82/318) vs.19.80％(40/202) and 9.43％(30/318) vs.4.46％(9/202)],and there was significant difference (P ＜ 0.05).The relationship between 25-dihydroxy vitamin D3 and TPOAb was assessed and showed significant inverse correlation (r =-0.13,P ＜0.05).Conclusions Vitamin D deficiency is very common in the population,and autoimmune thyroid disease is related with vitamin D deficiency,which may has impact on the body's immune regulation.Specific mechanism and whether vitamin D supplementation can intervene and treat autoimmune thyroid disease need further study.

Objective To detect the change of cerebral perfusion in pediatric patients with Leigh's syndrome (LS)by using MR perfusion technique.Methods Twelve patients with Leigh's syndrome and thirteen normal children were scanned with the sequence of flow-sensitive alternating inversion recovery exempting separate T_1 measurement (FAIREST).Their relative cerebral blood flow(rCBF)values were obtained in regions of bilateral basilar nuclei and bilateral thalami.Student t-test was used to compare them between the two groups and receiver operating characteristic(ROC)curve analysis was carried out.Results Statistical analysis revealed significant difference between two groups in the regions of bilateral basilar nuclei and right thalamus(t =3.26,P =0.002;t =2.25 ,P =0.018 ;t =2.88 ,P =0.004,respectively).The rCBF values for LS group and control group were 0.432?0.158 and 0.619?0.125 for right basilar nuclear, 0.478?0.186 and 0.621?0.123 for left basilar nuclear,0.630?0.189 and 0.833?0.160 for right thalamus,respectively.The areas under the ROC curves were 0.833 and 0.756 for the rCBF of right and left basilar nuclear,respectively.Conclusion Relative CBF maps may reveal changes of cerebral blood flow in some specific brain regions in patients with Leigh's syndrome.It can provide additional information to the clinicians in the evaluation of the disease.