AIM: To investigate the effects of vitrectomy combined with cataract surgery on the corneal endothelial cells in diabetic retinopathy.METHODS: A retrospective study was designed.160 patients(160 eyes) with diabetic retinopathy from Jan 2015 to Feb 2017 were divided into two groups according to cataract.74 patients(74 eyes) were operated on vitrectomy,and 86 patients(86 eyes) on vitrectomy combined with phacoemulsification cataract surgery and capsular bag implantation of foldable intraocular lens.To record the change of corneal endothelial cells density,average cellular area,coefficient of variation and percentage of hexagonal endothelial cell before and after treatment with Topcon corneal specular microscope.RESULTS: Before and after surgery,the results of corneal endothelial cells density,average cellular area,coefficient of variation and percentage of hexagonal endothelial cell in simple vitrectomy group were no significant difference(P>0.05);After treatment corneal endothelial cells density and percentage of hexagonal endothelial cell were changed with statistical difference as the same as average cellular area and coefficient of variation(P<0.05);There were significantly differences in corneal endothelial cells between two groups(P<0.05).CONCLUSION: It has certain influence on the corned endothelial cells when using vitrectomy combined with cataract surgery in diabetic retinopathy.For patients with indications,it should be paid attention to protecting the corneal endothelial cells.

AIM: To investigate the changes of expression of SR-BI in phorbol 12-myristate 13-acetate(PMA) differentiated U937 cells.METHODS: U937 cells were cultured with 100 nmol/L PMA in order to differentiate the cells to macrophages.Immunocytochemical method,Western blotting analysis and reverse transcription polymerase chain reaction(RT-PCR) were used to detect SR-BI protein and mRNA during differentiation.RESULTS: Immunocytochemistry showed that after exposure of U937 cells to PMA for 24,48,72 hours,the values of SR-BI protein expression in U937 cells were 15.94?3.56,27.86?4.39 and 9.08?2.37,with the first two higher than that in undifferentiated cells(7.76?1.74,P0.05) increment in the expression of SR-BI protein compared with U937 monocytes.RT-PCR showed that relative SR-BI mRNA expression in different group was 0.112?0.006,0.235?0.014,0.344?0.140 and 0.138?0.010,respectively.CONCLUSION: SR-BI protein and mRNA were increased after differentiation,reached a peak at 48 hours,and decreased at 72 hours.High expression levels of SR-BI in U937 macrophages following PMA differentiation may be correlated with foam cell formation.

Objective To explore the clinical characteristics and prognosis of congenital pulmonary artery sling (PAS) in children. MethodsThe clinical data of 38 children diagnosed with PAS during June 2009 and February 2015 were retrospectively analyzed. ResultsIn 38 PAS children, 35 cases (89.47%) were hospitalized for varying degrees of respiratory manifestations with recurrent cough (89.47%) and wheezing (84.21%) being the most common. The remaining 3 cases were found abnormal in routine preoperative examination and the diagnosis was confirmed after further examination. All 38 children were performed computer tomography angiography (CTA). Thirty-seven cases were diagnosed of PAS and diagnostic rate was 97.37%. One case was suspected of pulmonary dysplasia and diagnosed of PAS after operation. Twenty-six children received surgical treatment, of whom 25 children had pulmonary artery reconstruction (LPA). Seven children died during/after operation and 18 survived. The remaining 12 children received non-surgical treatment, of whom 9 died and 3 survived.ConclusionCardiac uhrasonography may reveal PAS in the early stage, while CTA is the best method for conifrmed diagnosis. LPA reconstruction is an important means of relieving left pulmonary artery oppression.

Objective To analyze the characteristics of serum vancomycin concentrations and its clinical therapeutic effects. Methods Serum vancomycin concentrations of 59 children diagnosed with severe Gram positive cocci pneumonia and treated with vancomycin were retrospectively analyzed. Vancomycin concentrations, biochemical values and disease status of patients were analyzed. Results The serum vancomycin concentrations of severe Gram positive cocci pneumonia children accompanied by acyanotic congenital heart disease was significantly higher than those without congenital heart disease, ( 12 . 12 mg/L vs 7 . 76 mg/L, P=0 . 008 ). The therapeutic effect of 40-60 mg/(kg·d) dosage group was signiifcantly higher than that of?60 mg/(kg·d) dosage group. Acute liver function damage and moderate/severe anemia may be risk factors for poor therapeutic effects to severe Gram positive cocci pneumonia children (P?

Adolescent ; Adult ; Astrocytoma ; diagnosis ; surgery ; Brain Diseases ; diagnosis ; surgery ; Brain Neoplasms ; diagnosis ; surgery ; Brain Stem ; surgery ; Female ; Follow-Up Studies ; Hematoma ; diagnosis ; surgery ; Humans ; Magnetic Resonance Imaging ; Male ; Microsurgery ; methods ; Middle Aged ; Tomography, X-Ray Computed

OBJECTIVETo explore the types and clinical characteristics of traumatic subdural hydroma (TSH).

METHODOne hundred and ninety-two cases of TSH were classified into four types: The types of resolution, steadiness, development and evolution on the basis of their clinical characteristics and dynamic observation of CT scanning.

RESULTSThe patients in the resolution type often occurred in the prime of life. They had normal intracranial pressure and good prognoses using the conservative therapy. The majority of the elderly patients was in the steadiness type. Their main clinical manifestations included headache, dizziness, nausea, vomit, abnormal mentality and so on. Generally, there was no positive nervous systemic sign related to TSH. The prognoses of patients with the steadiness type treated by conservative therapy were satisfactory. The development type was common in the babies and children. This was mainly manifested as progressive increased intracranial pressure, mild hemiplegia, aphasia and abnormal mentality. The patients with development type often needed surgical treatment and might die once in a while due to accompanying cerebral parenchymal damage or postoperative complications. The evolution type was characterized by the polarized age, chronic increased intracranial pressure, often happening between 22 and 100 days after TSH and in the cases of small hydromas treated conservatively and mild accompanying cerebral damage, which always have a good prognosis by the treatment of surgery.

CONCLUSIONSThe mechanism, clinical characteristics, treatment methods and prognoses varied with different types of TSH.

Adolescent ; Adult ; Aged ; Child ; Child, Preschool ; Craniocerebral Trauma ; complications ; Female ; Humans ; Infant ; Male ; Middle Aged ; Prognosis ; Subdural Effusion ; classification ; diagnostic imaging ; therapy ; Tomography, X-Ray Computed

OBJECTIVETo evaluate whether or not administration of folic acid and resveratrol have preventive effects on cleft palate formation as well as the comparison of the two drugs' s effects.

METHODSPregnant mice were randomly divided into 9 groups, with 8 mice in each group. The TCDD group mice were dosed with TCDD 28 microg/kg body weight on gestation day 10 (GD 10) animals in folic acid group were respectively dosed with folic acid 15, 10, 5 mg/kg and TCDD 28 microg/kg; resveratrol treated mice were divided into 3 groups: resveratrol 50 mg/kg were orally administered for 6 consecutive days, from gestational day GD 8 to GD13 in resveratrol (GD8-13 ) group; resveratrol 50 mg/kg were orally administered for 6 consecutive days, from gestational day GD 8 to GD13, followed hy an oral administered with TCDD on GD10 in resveratrol (GD8-13) + TCDD group; resveratrol 50mg/kg and TCDD 28 microg/kg were used by gavage administration at GD10 in resveratrol (GD10) + TCDD group. Control mice were treated with the same volume of water for 6 consecutive days from GD8 to GD13 and were given a single dose of corn oil on GD10. The pregnant mice weight and embryos, the number of live, cleft palate, dead and resorption fetal mice were recorded on GD 17.5. The coronal sections of the fetal mice heads were prepared at GD 17.5 and observed by microscopy.

RESULTSTotal frequency of clefts was 92.86% in TCDD group, 84.00% (15 mg), 73.08% (10 mg), 84.00% (5 mg) in folic acid + TCDD groups, 0% in resveratrol (GD10) group, 74.51% (GD10), 57.78% (GD8-13) in resveratrol + TCDD groups. The frequency of cleft was 0% in the control group. Compared with the control and the TCDD groups, there were significant differences in the number of live, dead and resorption fetal mice in TCCD + resveratrol (GD8-13) group (P < 0.05). No significant differences in embryonic weight, live fetuses weight, the number of live, dead and resorption fetal mice were found in the other groups (P > 0.05).

CONCLUSIONTest dose of folic acid and resveratrol both had certain antagonistic effect on cleft palate in mice induced by TCDD, with folic acid 10 mg/kg, resveratrol 50 mg/kg GD8-13 doses having stronger antagonistic action. Effects of both the two drugs have no significant difference, but resveratrol (50 mg/kg, GD8-13) significantly affects the fetal mice's growth and development under TCDD exposure in utero.

Abnormalities, Drug-Induced ; prevention & control ; Animals ; Cleft Palate ; chemically induced ; prevention & control ; Female ; Fetus ; Folic Acid ; administration & dosage ; pharmacology ; Humans ; Mice ; Mice, Inbred C57BL ; Polychlorinated Dibenzodioxins ; antagonists & inhibitors ; Pregnancy ; Random Allocation ; Stilbenes ; administration & dosage ; pharmacology ; Teratogens

Objective To understand the pathway of iodine intaking among Tibetan, and provide basic data for prevention and control of iodine deficiency disorders (IDD). Methods Through the method of random sampling, the boarding and day student aged 8 - 10 and women of childbearing age were conducted dietary survey to understand the condition of food intaking via the 24 h review method in 2015. Samples of urine, drinking water, dried beef, milk, Qula and fried noodles were collected and tested iodine level. Results Due to taking iodized salt three times a day with meals, the median of urinary iodine among 492 investigated boarding students was 179.2 μg/L;differently, the median of urinary iodine among 298 day students in this investigation was 79.6 μg/L who taking iodized salt only at lunch at school;and in the study, the median of urinary iodine among 158 women of childbearing age who took iodine-free salt daily was 33.7 μg/L. The iodine contents in 51 drinking water samples, 66 dried beef samples, 48 milk samples, 20 Qula samples and 37 fried noodle samples were quantified respectively, and the average iodine contents of each food were 0.8 μg/L in drinking water, 59.1 μg/kg in dried beef, 61.5 μg/kg in milk, 226.4 μg/kg in Qula and 17.0 μg/kg in fried noodles. The acceptable daily intake (ADI) of iodine of the boarding and day students aged from 8 to 10 and women of child bearing age were 234.0, 126.4 and 76.7 μg/d, respectively, among which the ADI of iodine with iodized salt were 208.0, 78.0 and 0.0 μg/d. Conclusion Consuming iodized salt is a main method to get iodine among Tibetans in Nangqian County, so that it is significant to carried out this measure for a long time for free to let them have iodized salt every day instead of iodine-free one.

BACKGROUNDThe genome of the severe acute respiratory syndrome-associated coronavirus (SARS-CoV) includes sequences encoding the putative protein X4 (ORF8, ORF7a), consisting of 122 amino acids. The deduced sequence contains a probable cleaved signal peptide sequence and a C-terminal transmembrane helix, indicating that protein X4 is likely to be a type I membrane protein. This study was conducted to demonstrate whether the protein X4 was expressed and its essential function in the process of SARS-CoV infection.

METHODSThe prokaryotic and eukaryotic protein X4-expressing plasmids were constructed. Recombinant soluble protein X4 was purified from E. coli using ion exchange chromatography, and the preparation was injected into chicken for rising specific polyclonal antibodies. The expression of protein X4 in SARS-CoV-infected Vero E6 cells and lung tissues from patients with SARS was performed using immunofluorescence assay and immunohistochemistry technique. The preliminary function of protein X4 was evaluated by treatment with and over-expression of protein X4 in cell lines. Western blot was employed to evaluate the expression of protein X4 in SARS-CoV particles.

RESULTSWe expressed and purified soluble recombinant protein X4 from E.coli, and generated specific antibodies against protein X4. Western blot proved that the protein X4 was not assembled in the SARS-CoV particles. Indirect immunofluorescence assays revealed that the expression of protein X4 was detected at 8 hours after infection in SARS-CoV-infected Vero E6 cells. It was also detected in the lung tissues from patients with SARS. Treatment with and overexpression of protein X4 inhibited the growth of Balb/c 3T3 cells as determined by cell counting and MTT assays.

CONCLUSIONThe results provide the evidence of protein X4 expression following SARS-CoV infection, and may facilitate further investigation of the immunopathological mechanism of SARS.

Amino Acid Sequence ; Animals ; BALB 3T3 Cells ; Cercopithecus aethiops ; Growth Inhibitors ; analysis ; physiology ; HeLa Cells ; Humans ; Immunohistochemistry ; Lung ; chemistry ; Mice ; Molecular Sequence Data ; SARS Virus ; chemistry ; Severe Acute Respiratory Syndrome ; metabolism ; Vero Cells ; Viral Structural Proteins ; analysis ; physiology

Although significant progress has been made in the development of novel targeted drugs for the treatment of acute myeloid leukemia(AML)in recent years,chemotherapy still remains the mainstay of treatment and the overall survival is poor in most patients.Here,we demonstrated the antileukemia activity of a novel small molecular compound NL101,which is formed through the modification on bendamustine with a suberanilohydroxamic acid(SAHA)radical.NL101 suppresses the proliferation of myeloid malignancy cells and primary AML cells.It induces DNA damage and caspase 3-mediated apoptosis.A genome-wide clustered regularly interspaced short palindromic repeats(CRISPR)library screen revealed that phosphatase and tensin homologous(PTEN)gene is critical for the regulation of cell survival upon NL101 treatment.The knockout or inhibition of PTEN significantly reduced NL101-induced apoptosis in AML and myelodysplastic syndrome(MDS)cells,accompanied by the activation of protein kinase B(AKT)signaling pathway.The inhibition of mammalian target of rapamycin(mTOR)by rapamycin enhanced the sensitivity of AML cells to NL101-induced cell death.These findings uncover PTEN protein expression as a major determinant of chemosensitivity to NL101 and provide a novel strategy to treat AML with the combination of NL101 and rapamycin.