AIM:To investigate the timing and efficacy of vitrectomy for patients with vitreous hemorrhage(VH) due to proliferative diabetic retinopathy(PDR).METHODS:Retrospective analysis.Patients who presented to our hospital between Feburary 2012 and May 2014 with VH secondary to PDR treated with vitrectomy were included.All patients were divided into three groups according to the duration of VH.A group was less than 1mo for 22 eyes, B group was 1-3mo for 23 eyes, C group was more than 3mo for 25 eyes.All patients underwent intravitreal injection of ranibizumab 1-2wk before vitrectomy, and supplemented or finished panretinal photocoagulation (PRP) intraoperatively or postoperatively.Patients with cataract accepted phacoemulsification and intraocular lens implantation.Eyes filling silicone oil were implanted intraocular lens in the second phase.All patients were followed up 24 to 42mo (mean:28.7mo).We assessed the intraoperative complications such as hemorrhage, iatrogenic retinal hole, and postoperative complications such as vitreous hemorrhage, neovascular glaucoma.Macular edema and best corrected visual acuity were observed at every follow-up.RESULTS:There was no significant difference for other baseline data (P>0.05) but DR stage between three groups (P=0.033).There was significant difference of last follow up visual acuity between three groups (P<0.001).The significant difference can be seen between group A and B (P=0.03).The same outcome showed between Group A and C(P<0.001).There was no significant difference between Group B and C (P>0.05).The percentage of visual acuity was 0.5 and above in the three groups were:41%, 23%, 0 respectively.The patients with visual acuity of less than 0.1 were 5%, 26% and 40% respectively.Silicone oil filling rate of three groups were:9%, 26%, 40% respectively and there was no significantly difference between three groups on postoperative complications (P>0.05).CONCLUSION:Patients with VH due to proliferative diabetic retinopathy undergoing early vitrectomy may get better visual acuity than who accepting delayed vitrectomy.

The clinical outcomes of five groups of infertility patients receiving frozenthawed,cleavage-stage embryo transfers with exogenous hormone protocols with or without a depot gonadotropin-releasing hormone (GnRH) agonist were assessed.A retrospective cohort analysis was performed on 1003 cycles undergoing frozen-thawed,cleavage-stage embryo transfers from January 1,2012 to June 31,2015 in the Reproductive Medicine Center of Wuhan General Hospital of Guangzhou Military Region.Based on the infertility etiologies of the patients,the 1003 cycles were divided into five groups:tubal infertility,polycystic ovary syndrome (PCOS),endometriosis,male infertility,and unexplained infertility.The main outcome was the live birth rate.Two groups were set up based on the intervention:group A was given a GnRH agonist with exogenous estrogen and progesterone,and group B (control group) was given exogenous estrogen and progesterone only.The results showed that the baseline serum hormone levels and basic characteristics of the patients were not significantly different between groups A and B.The live birth rates in groups A and B were 41.67％ and 29.29％,respectively (P＜0.05).The live birth rates in patients with PCOS in groups A and B were 56.25％ and 30.61％,respectively (P＜0.05).The clinical pregnancy,implantation and on-going pregnancy rates showed the same trends as the live birth rates between groups A and B.The ectopic pregnancy rate was significantly lower in group A than in group B.We concluded that the live birth rate was higher and other clinical outcomes were more satisfactory with GnRH agonist cotreatment than without GnRH agonist co-treatment for frozen-thawed embryo transfer.The GnRH agonist combined with exogenous estrogen and progesterone worked for all types of infertility tested,especially for women with PCOS.

BACKGROUNDSeveral studies have shown that coronary stenting reduces the frequency of clinical and angiographic restenosis in patients with mild to moderate renal insufficiency. However, less is known about the long-term benefits of stent use in this population. This study was aimed to determine the impact of coronary stenting on extended (5 years) long-term outcomes of patients with chronic renal insufficiency.

METHODSThe study included 602 consecutive patients who underwent successful percutaneous coronary intervention with stenting. Renal insufficiency was defined as an estimated glomerular filtration rate < 60 ml x min(-1) x 1.73 m(-2). The major adverse cardiac events were compared for patients with (n = 160) and without (n = 442) renal insufficiency.

RESULTSAfter the third year of follow-up, nonfatal myocardial infarction and revascularization rates were significantly increased in patients with renal insufficiency compared with those without renal dysfunction (16.9% vs 7.7%, P = 0.001; 29.4% vs 15.8%, P < 0.001). In patients who had recurrent cardiovascular events, a significantly higher rate of de novo stenosis revascularization was found in patients with renal insufficiency than without renal insufficiency (57.7% vs 22.7%, P < 0.001), while there was no significant difference in target lesion revascularization between the groups (51.9% vs 43.6%, P = 0.323). Multivariate analysis demonstrated an independent impact of the presence of renal insufficiency on the major adverse cardiac events (hazard ratio: 1.488, 95% confidence interval: 1.051 - 2.106, P = 0.025) and de novo stenosis (hazard ratio: 5.505, 95% confidence interval: 2.151 - 14.090, P < 0.001).

CONCLUSIONSThe late major adverse cardiac events, after successful coronary stenting, is increased in patients with an estimated glomerular filtration rate < 60 ml x min(-1) x 1.73 m(-2). This might be associated with increased risk of de novo stenosis in this population.

Angioplasty, Balloon, Coronary ; adverse effects ; Coronary Angiography ; Coronary Restenosis ; pathology ; therapy ; Female ; Glomerular Filtration Rate ; Humans ; Male ; Middle Aged ; Renal Insufficiency ; pathology ; therapy ; Stents

Objective] To analyze the effect of enhanced immunization for school-age children in Hongkou District of Shanghai in immunology and epidemiology . [ Methods] One month after completing immunization, the blood antibody titers were measured by ELISA method , and compared with the those of non-enhanced immunization , for epidemiological survey were collected history of measles immunization and close contact with the measles . [ Results] It could not be thought that strengthening immunization im-proved antibody positivity rate , the protection rate , and geometric antibody average concentrations .There was not statistical difference in antibody levels between measles vaccination 2 times and 3 -4 times. [ Conclusion] In the regions where routine immunization rates reach a high level , strengthening immuni-zation done on large scale is a waste of vaccine resources , human resources and financial resources , and leak re-vaccination should be done as a cost-effective preventive measure .

BACKGROUNDUnderstanding the characteristics of Chinese dialysis patients and the current practice trends is the first step to evaluate the association between practice pattern and outcome in these populations. In the present study, we evaluated the status of medical treatment and characteristic features of chronic dialysis patients in China.

METHODSThrough a clustering sampling, we selected 9 centers from the largest dialysis facilities in 6 cities around China. All adult undergoing dialysis in the selected units were screened. A total of 2388 (1775 on hemodialysis (HD) and 613 on peritoneal dialysis (PD)) patients were finally enrolled. All data were collected at enrollment on the bases of review of medical records.

RESULTSIn this cohort, 1313 (55.0%) were male. The mean age was 54 years old. The median time for dialysis was 26 months (12 - 51 months). Seventy-five percent of patients were on HD and 25.0% on PD. Among PD patients, about 21% patients did not receive dialysis adequacy. For HD patients, about 14.0% of them did not achieve dialysis adequacy when the target of kt/V was set as 1.2. Only 44.7% of patients achieved blood pressure target of 140/90 mmHg. About 60% of patients did not reach the hemoglobin target of 110 g/L even though 85.0% of them were treated with erythropoietin. In addition, 48.5% of the patients had uncontrolled mineral metabolism revealed by the high calcium-phosphate product. Compared with HD patients, higher level of serum glucose, triglyceride, and total and low density lipoprotein cholesterol were more common in PD patients.

CONCLUSIONSThis observational study suggests that many Chinese dialysis patients did not achieve the therapeutic target, particularly in blood pressure control, anemia correction, and mineral balance. PD patients were more likely to suffer metabolic disturbance.

Adult ; Aged ; Anemia ; physiopathology ; Blood Pressure ; physiology ; Female ; Humans ; Male ; Middle Aged ; Peritoneal Dialysis ; Renal Dialysis

Cells not only contain membrane-bound organelles (MBOs), but also membraneless organelles (MLOs) formed by condensation of many biomacromolecules. Examples include RNA-protein granules such as nucleoli and PML nuclear bodies (PML-NBs) in the nucleus, as well as stress granules and P-bodies in the cytoplasm. Phase separation is the basic organizing principle of the form of the condensates or membraneless organelles (MLOs) of biomacromolecules including proteins and nucleic acids. In particular, liquid-liquid phase separation (LLPS) compartmentalises and concentrates biological macromolecules into liquid condensates. It has been found that phase separation of biomacromolecules requires some typical intrinsic characteristics, such as intrinsically disordered regions, modular domains and multivalent interactions. The phase separation of biomacromolecules plays a key role in many important cell activities. In recent years, the phase separation of biomacromolecules phase has become a focus of research in gene transcriptional regulation. Transcriptional regulatory elements such as RNA polymerases, transcription factors (TFs), and super enhancers (SEs) all play important roles through phase separation. Our group has previously reported for the first time that long-term inactivation or absence of assembly factors leads to the formation of condensates of RNA polymerase II (RNAPII) subunits in the cytoplasm, and this process is reversible, suggesting a novel regulatory model of eukaryotic transcription machinery. The phase separation of biomacromolecules provides a biophysical understanding for the rapid transmission of transcriptional signals by a large number of TFs. Moreover, phase separation during transcriptional regulation is closely related to the occurrence of cancer. For example, the activation of oncogenes is usually associated with the formation of phase separation condensates at the SEs. In this review, the intrinsic characteristics of the formation of biomacromolecules phase separation and the important role of phase separation in transcriptional regulation are reviewed, which will provide reference for understanding basic cell activities and gene regulation in cancer.

Objective: To explore the effects of expanded frontal-parietal pedicled flap in reconstructing cervical scar contracture deformity in children after burns. Methods: A retrospective observational study was conducted. From January 2015 to December 2020, 18 male children with cervical scar contracture deformity after burns who met the inclusion criteria were admitted to Zhengzhou First People's Hospital, aged 4 to 12 years, including 10 cases with degree Ⅱ cervical scar contracture deformity and 8 cases with degree Ⅲ scar contracture deformity, and were all reconstructed with expanded frontal-parietal pedicled flap. The surgery was performed in 3 stages. In the first stage, a cylindrical skin and soft tissue expander (hereinafter referred to as expander) with rated capacity of 300 to 500 mL was placed in the frontal-parietal region. The expansion time was 4 to 6 months with the total normal saline injection volume being 2.1 to 3.0 times of the rated capacity of expander. In the second stage, expander removal, scar excision, contracture release, and flap transfer were performed, with the flap areas of 18 cm×9 cm to 23 cm×13 cm and the secondary wound areas of 16 cm×8 cm to 21 cm×11 cm after scar excision and contracture release. After 3 to 4 weeks, in the third stage, the flap pedicle was cut off and restored. The rated volume of placed expander, total normal saline injection volume, type of vascular pedicle of flap, survival of flap and reconstruction of scar after the second stage surgery were recorded. The neck range of motion and cervico-mental angle were measured before surgery and one-year after surgery. The appearance of neck, occurrence of common complications in the donor and recipient sites of children, and satisfaction of children's families for treatment effects were followed up. Data were statistically analyzed with paired sample t test. Results: All the patients successfully completed the three stages of operation. The rated volume of implanted expander was 300 mL in 6 children, 400 mL in 9 children, and 500 mL in 3 children, with the volume of normal saline injection being 630 to 1 500 mL. The type of vascular pedicle of flap was double pedicle in 13 cases and was single pedicle in 5 cases. All the flaps in 17 children survived well, and the secondary wounds after neck scar excision and contracture release were all reconstructed in one procedure. In one case, the distal blood supply of the single pedicled flap was poor after the second stage surgery, with necrosis of about 2.5 cm in length. The distal necrotic tissue was removed on 10 days after the operation, and the wound was completely closed after the flap was repositioned. In the follow-up of 6 months to 3 years post operation, the cervical scar contracture deformity in 18 children was corrected without recurrence. The flap was not bloated, the texture was soft, and the appearances of chin and neck were good. The range of motion of cervical pre-buckling, extension, left flexion, and right flexion, and cervico-mental angle in one year after operation were improved compared with those before operation (with t values of 43.10, 22.64, 27.96, 20.59, and 88.42, respectively, P<0.01). The incision in the frontal donor site was located in the hairline, the scar was slight and concealed. No complication such as cranial depression was observed in expander placement site, and the children's families were satisfied with the result of reconstruction. Conclusions: Application of expanded frontal-parietal pedicled flap in reconstructing the cervical scar contracture deformity in children after burns can obviously improve the appearance and function of neck, with unlikely recurrence of postoperative scar contractures, thus it is an ideal method of reconstruction.
Burns/surgery* ; Child ; Cicatrix/surgery* ; Contracture/surgery* ; Humans ; Male ; Perforator Flap ; Reconstructive Surgical Procedures/methods* ; Saline Solution ; Skin Transplantation ; Treatment Outcome

Objective:To determine the level of anti-measles antibody in healthy population aged 1-14 years old in Shanghai， and project the risk of measles incidence in adult population in the future， which may provide evidence for enhancing the measles immunization strategy. Methods:A cross-sectional study was conducted to collect the serum of healthy people aged 1-14 years old in an urban district hospital in Shanghai. Serum concentration of anti-measles IgG antibody was examined by enzyme-linked immunosorbent assay （ELISA） and dynamics of IgG antibody was compared. Results:The prevalence of anti-measles antibody in healthy people aged 1-14 years old was determined to be 95.29%， and the antibody protection rate was 61.86%. There was no significant difference in the distribution of antibody between men and women （P>0.05）. However， there was statistical difference in the distribution of antibody among different age groups （P<0.05）， in which the antibody showed a decreasing trend with age， especially after the age of 10 years. The lowest prevalence of anti-measles antibody and protection rate were observed in the population aged 13-14 years old， which were 87.41% and 22.96%， respectively. The GMT was 2.667 1 （equal to the concentration of anti-measles IgG antibody being 464.62 mIU/mL）. According to the fitting model Ŷ =3.217-0.04X（R²=0.943，P<0.05）， the antibody protection rate was projected to decrease to zero in the population aged 19-20 years old， whereas the anti-measles antibody was to zero in the population aged 29-30 years old . Conclusion:As there is almost no natural infection of measles，the anti-measles antibody after measles vaccine immunization showed a linearly decreasing trend with age after measles immunization．It is recommended that people aged 10-15 years should be administered intensive immunization for prevention of adults measles，which could be incorporated into current measles immunization strategies.