Objective To explore the application value of multiphase dynamic contrast-enhanced MRI (MDCE-MRI) in the early chemoradiation efficacy in cervical cancer.Methods Twenty-one patients with cervical cancer received chemoradiation.Routine MR scan and MDCE-MRI scan were examined at different stages, including pre-treatment, 15 days,1 month and 2 months after treatment.According to volume change of the tumor after treatment, the cases were mainly divided into complete remission(CR), partial remission (PR).The correlation between volume change of cancer after treatment and the time-signal intensity curve (TIC),mean time to enhancement(MTE),time to peak(TTP),maximum slope of increase(MSI),maximum slope of decrease(MSD), negative enhancement integral (NEI) were analysed.Results After system chemoradiation for 2 months,4 of enrolled patients got complete remission and 17 partial remission.The reduction rate of the tumor diameter was negatively correlated to MSI values(r=-0.877,P<0.05) and positively related with NEI (r=0.819,P<0.05) before the treatment.15 days after the treatment, the diminished rate of the tumor diameter had active relation with change of TTP(r=0.765,P<0.05) and NEI(r=0.775,P<0.05).It indicated that MSI and NEI values before cervical cancer chemoradiation and the variation of TTP and NEI after treatment for 15 days could help predict the variation tendency of cancer diameter.Chemoradiation and therapy 1 month later,for all the parameters'' AUC values,the change rate of NEI were the largest one.When the critical value was not less than 96.46%, the sensitivity was 82.4%, specificity was 75%.TIC curve of type Ⅰ increased, type Ⅲ decreased to disappear gradually.Conclusion MDCE-MRI can be used to predict the efficacy of chemoradiation in cervical cancer patients, of which the MSI, TTP and NEI are more sensitive.

To develop different methods for determining siRNA content and the entrapment efficiency of siRNA loaded liposomes, SYBR Gold electrophoresis method and Ribogreen fluorospectrophotometry method were used respectively. SYBR Gold electrophoresis method has a good linear relation in a range at 0.2-2.0 micromol x L(-1) (R = 0.9930), and the recovery at the high, middle and low concentrations were 96.35%, 96.92%, and 100.74%, respectively (n = 3). The intra-day and inter-day RSD were far below 5% (n = 5). Ribogreen fluorospectrophotometry method has a good linear relation in a range at 10-50 nmol x L(-1) (R = 0.9971), and the recovery at the high, middle and low concentrations were 98.22%, 99.88% and 99.64%, respectively (n = 3). The intra-day and inter-day RSD were far below 5% (n = 5). The content and the entrapment efficiency of three batches of siRNA cationic liposomes were 98.52%, 97.85% and 99.20%, 96.45%, respectively, with these two methods. And there is no significant difference by ANOVA. Both of the two methods are accurate, sensitive, convenient method for determination of the siRNA content and the entrapment efficiency of siRNA loaded cationic liposomes.
Drug Carriers ; Drug Delivery Systems ; Electrophoresis ; Liposomes ; chemistry ; RNA, Small Interfering ; analysis ; Spectrometry, Fluorescence

Objective: To investigate the change in intestinal flora in Mongolian students with anxiety,so as to provide basis for exploring the relationship between flora and secretion expression in vivo. Methods: The Self rating Anxiety Scale(SAS)was used to assess anxiety in medical college students; then a semi structured interview was administered. Fecal samples that met the inclusion criteria were collected and divided into anxiety (SAS score≥50) and control groups (no anxiety, SAS score<50) according to the standard score of SAS. Samples provided by Mongolian female students were selected from each group. The total bacterial DNA was extracted from the fecal samples for PCR amplification and NovaSeq 2x250bp high throughput sequencing was performed for the V3- V4 region of 16S rDNA gene to obtain the biological information of the intestinal flora. The intergroup OTU, structural diversity, significant difference, and LEfSe analyses were performed with information mining of the literature think tanks. Results: Anxiety existed in 23.86% of the Mongolian students,and 16.96% of the Han people. A Chi square test showed no significant difference in detection of anxiety between Mongolian and Han college students ( P =0.07). Analysis of the alpha diversity index showed that the Shannon index, Simpson index, Chao1 index, and Observed species did not differed significantly between the two groups( t =8.0， 9.0 ，6.0，6.5). The difference in abundance of some bacteria was significant at the Class, Order, Family, and Genus levels between the two groups( t =-2.26-2.57，-5.08-3.58，-2.65-2.09， P <0.05). Conclusion The alpha diversity index showed that there was no significant difference in the abundance and diversity of intestinal flora between the two groups. While there were significant differences at different classification levels, the results suggest that the structure of intestinal flora can change in students with anxiety.

Objective: To elucidate the mechanism of melatonin combined with cisplatin in promoting cell apoptosis of rat pancreatic cancer AR42J cells. Methods: Rat pancreatic cancer AR42J cells were divided into control group, 1 mmol/L cisplatin treated group (cisplatin group), 1 mmol/L melatonin treated group (melatonin group), 1 mmol/L cisplatin combined with 1 mmol/L melatonin treated group (combined group), 1 μmol/L cisplatin combined with melatonin treated group after 1 μmol/L PBN pretreatment for an hour (PBN+ combined group) and 1 μmol/L cisplatin combined with melatonin treated group after PBN solvent pretreatment for an hour (solvent+ combined group). MTT and annexin V-FITC/PI were used to detect the cell proliferation rate and cell apoptosis rate, respectively. The protein expression of caspase-3 was detected by Western blot. DCFH-DA was used to detect the level of ROS. ROS level and caspase-3 expression in AR42J cells pretreated with ROS antagonist PBN for 24 hours were detected. Results: The cell proliferation rate of control group, cisplatin group, melatonin group and combination group after 24-hour culture was (96.29±3.49)%, (81.38±6.01)%, (80.72±3.68)% and (42.26±6.35)%, respectively. The cell apoptosis rate was (16.42±4.15)%, (56.47±9.06)%, (52.94±6.57)% and (87.36±6.48)%, respectively. The percentage of ROS positive cells was (1.33±1.53)%, (46.67±7.64)%, (45.67±5.13)% and (83.33±7.64)%, respectively. The expression of cspase-3 was 100%, (150.64±7.70)%, (147.00±7.27)% and (190.04±5.07)%, respectively. The cell proliferation rate of cisplatin group and melatonin group was significantly lower than that of the control group. The apoptotic rate, the proportion of ROS positive cells and the expression of caspase-3 were significantly higher than those in control group. The changes in the combined group were more obvious than those in the single drug treatment group, and the differences were all statistically significant (all Pvalues <0.05). The percentage of ROS positive AR42J cells [(45.24±4.64)% vs (84.90±6.13)%)] induced by melatonin combined with cisplatin could be significantly reversed by PBN pretreatment for 1 hour, and the expression of caspase-3 in AR42J cells could be down regulated (124.92±9.72 vs 184.69±7.76) with statistically significant difference (all P values<0.05). Conclusions Melatonin combined with cisplatin may promote cell apoptosis of pancreatic cancer AR42J cells through ROS/caspase-3 pathway.

OBJECTIVETo observe early rehabilitation of two different acupuncture programs for hemiplegia due to stroke.

METHODSSeventy cases of early hemiplegia due to stroke were randomly divided into a treatment group and a control group. The treatment group were treated by acupuncture at acupoints of both the healthy and affected sides, twice each day, respectively, and the control group by acupuncture at the affected side, once daily. Their therapeutic effects were evaluated by the brief Fugl-Meyer movement scale and the modified Barthel indexes.

RESULTSThe patients with over grade IV for FMA accounted for 68.6% and the good rate for ADL was 74.3% in the treatment group, and 31.4% and 42.8% in the control group, respectively, the therapeutic effect of the treatment group being better than that of the control group (P<0.01 or P<0.05).

CONCLUSIONThe acupuncture program in which acupoints at both the healthy and affected sides are applied alternately is more beneficial to recovery of motor function and activity daily living (ADL) of the patient with hemiplegia due to stroke.

Activities of Daily Living ; Acupuncture Points ; Acupuncture Therapy ; Hemiplegia ; therapy ; Humans ; Stroke ; therapy

Objective To explore the relationship between cognitive function and sleep disturb-ance,depression and anxiety. Methods Totally 333 medical staff were investigated using the repetitive neu-ropsychological status questionnaire (RBANS),the Pittsburgh sleep quality index ( PSQI),the depression self-rating scale (SDS) and the anxiety self-rating scale ( SAS). Results ①The difference of visual span in gender(male:(81. 87±13. 48) vs female:(77. 12± 13. 09)) was statistically significant ( t=2. 928,P<0. 05).②Differences in immediate memory,language function,attention function and total score of RBANS among patients of different ages were statistically significant ( F=9. 654,8. 370,11. 465,11. 112, all P<0. 01).③There were significant differences in the RBANS,immediate memory,visual span,attention function and delayed memory between doctor and nurse(t=5. 374,4. 730,3. 389,4. 359,5. 675,all P<0. 01).④There were significant differences in the RBANS,immediate memory,and delayed memory between different PSQI levels ( F=3. 475,4. 892,4. 087, all P<0. 05). ⑤There were significant differences in RBANS ((88. 87±12. 47) vs (83. 69±13. 03)),immediate memory ((86. 18±16. 09) vs (80. 56±15. 38)),visual span ((79. 39±13. 32) vs (73. 47±12. 46)),and delayed memory ((89. 03±10. 26) vs (85. 49±11. 41)) between the depressive symptoms and not depressive symptoms groups( t=2. 794,2. 380,3. 042,2. 295,all P<0. 05) .⑥The total score of medical staff's RBANS was significantly negatively correlated with their PSQI,SDS and SAS scores (r=-0. 158,-0. 233,-0. 117,all P<0. 05).⑦SDS,age,occupation,education, time of sleep and PSQI entered multiple stepwise regression equations,which explain 39. 9% variation in cog-nitive function of medical staff. Conclusion The cognitive function of medical staff is affected by gender, age,occupation,education,depression,and sleep disturbance. The worse the sleep quality,the higher the de-gree of depression and anxiety,and the poorer the cognitive function.

Objective To explore the effects of potassium iodate (KIO3) on the proliferation, cell cycle, and the mRNA/protein levels of cyclin D 1 and Ki67 of SW579 cells, a human thyroid squamous carcinoma cell line . Methods The effects of different doses of KIO3(0,10-6,10-5,10-4,10-3,10-2,10-1 mol/L)on SW579 cell prolifer-ation were assessed by CCK8 method.SW579 cells were then treated with 0 (control), 10-6 or 10-2 mol/L KIO3 for 48 h.The cell cycle was measured by flow cytometry .The mRNA and protein levels of cyclinD 1 and Ki67 were re-spectivelyanalyzedbyreal-timePCRandWesternblot.Results 10-6and10-2mol/LofKIO3respectivelyexhibi-ted the most promoting and suppressive effect on SW579 cell proliferation.G1 phase of cells in 10-6 group short-ened significantly( P<0.05) , and S phase prolonged significantly( P<0.05); while each phase of cells in 10-2 mol/L group changed in the opposite way( P<0.05) .KIO3 at the dose of 10-6 mol/L significantly up-regulated the mRNA levels of cyclin D1 and ki67 in cells( P<0.05) ;whereas, the mRNA and protein levels of cyclin D1 and Ki67 were significantly down-regulated in cells treated with 10-2 mol/L KIO3( P<0.05) .Conclusions Different doses of KIO3 affect the proliferation and cell cycle of SW579 cells probably by regulating the levels of cyclin D1and Ki67 .

It is to promote the initiative of college students through the debating competition in the study of the medical immu-nology.The debating competition and questionnaire survey were performed among the teaching-reform students in Grade 2015 from Changzhi Medical College.The statistical analysis is made on the final examination scores of teaching-reform class and the parallel control class.The final exam of the teaching-reform students were all above 80 points.There was a significant difference for the scores compared with students in the parallel control class.The questionnaire survey was demonstrated that they preferred this learning,who are willing to take part in a similar event.The debating competition is a good way to advance the profile of medical immunology.

OBJECTIVETo observe the difference in the efficacy on lumbar intervertebral disc protrusion (LIDP) between Santong tuina therapy and conventional tuina therapy.

METHODSMulti-central, random and controlled clinical trial was carried out. One hundred and twenty cases of LIDP were randomized into an observation group and a control group, 60 cases in each one. In observation group, Santong tuina therapy was used. In control group, conventional tuina therapy was adopted. The clinical efficacy was observed in two groups, and lumbar vertebral function was scaled before and after treatment in two groups.

RESULTSThe total effective rate was 95.0% (57/60) in observation group and was 96.7% (58/60) in control group, without significant statistical difference in comparison (P > 0.05). The cured and markedly effective rate was 81.7% (49/60) in observation group and was 63.3% (38/60) in control group, indicating significant statistical difference in comparison (P < 0.05). The self-comparison of lumbar vertebral function before and after treatment presented statistical significance in either observation group (12.25 +/- 3.15, 25.56 +/- 5.27) or control group (13.32 +/- 3.26, 20.46 +/- 4.25, both P < 0.05); additionally, there was significant difference in the comparison between groups after treatment (P < 0.05). The therapy adopted in observation group improved lumbar vertebral function much significantly.

CONCLUSIONIn the treatment of LIDP, Santong tuina therapy achieves much better clinical efficacy as compared with conventional tuina therapy.

Adolescent ; Adult ; Aged ; Female ; Humans ; Intervertebral Disc Displacement ; therapy ; Lumbar Vertebrae ; Male ; Manipulation, Orthopedic ; methods ; Medicine, Chinese Traditional ; Middle Aged

OBJECTIVE: To explore the genetic etiology of a pedigree with mental retardation and hypotonia by using chromosome microarray analysis (CMA), low coverage massive parallel copy number variation sequencing (CNV-seq) and quantitative PCR (qPCR). METHODS: Genomic DNA was extracted from peripheral blood samples from two male patients and healthy members from the pedigree. CNV-seq was carried out for one patient. Suspected CNV was verified by qPCR. CNV-seq or single nucleotide polymorphism array (SNP array) were carried out for another patient and his family members. RESULTS: Both patients showed severe hypotonia and global development delay, in particular language delay. CNV-seq and SNP array indicated that both patients had carried a Xq28 duplication, with spanned 0.26 Mb and 0.42 Mb, respectively. Both duplications encompassed the MECP2 gene. CNV-seq analysis of their family members confirmed that the mother and one sister had carried similar duplications, while an elder brother was normal. CONCLUSION CNV-seq and CMA are rapid and effective tools for the diagnosis of MECP2 duplication syndrome in children with mental retardation, hypotonia and recurrent infections.