Preliminary study on centrifugation time of liquid plasmatrix for soft tissue regeneration / 中华口腔医学杂志

Objective: To provide reference for clinical application of liquid plasmatrix, and to investigate the optimal centrifugation time of liquid plasmatrix prepared by horizontal centrifugation for soft tissue regeneration from the aspects of mechanical properties, biological properties, and the effect of promoting soft tissue regeneration. Methods: Venous blood was collected from 6 healthy volunteers [3 males and 3 females, aged (26±2) years, with informed consent] who volunteered to donate blood at School of Stomatology, Wuhan University from September to November 2021. The collected venous blood was centrifuged at 500 ×g for 3, 5, 8 and 12 min to obtain liquid plasmatrix. The volume, weight, solidification time, and mechanical properties of liquid plasmatrix prepared at different centrifugation time were measured and recorded (the sample size at each time point was 3). The microstructure of different groups of liquid plasmatrix clot was observed by scanning electron microscope (SEM). The rheological properties of each group of liquid plasmatrix clot were measured by rheological test. The number and concentration of cells in the whole blood group and in each liquid plasmatrix group were measured using complete blood count test. The distribution of cells in the liquid plasmatrix clots was observed by hematoxylin-eosin staining. The effect of control group (Dulbecco's modified Eagle's medium containing 20% fetal bovine serum) and liquid plasmatrix clot exudates in 3, 5, 8, 12 min group (the sample size at each time point was 3) on gingival fibroblast migration was detected by cell migration method. Finally, the effects of control group and liquid plasmatrix clot exudates on the morphology of gingival fibroblasts were observed by fluorescence microscope. Results: The volume of liquid plasmatrix in 3, 5, 8 and 12 min group were approximately (2.47±0.12), (2.67±0.12), (3.53±0.12) and (3.73±0.12) ml, respectively. The weight of liquid plasmatrix in 3, 5, 8 and 12 min group were approximately (0.35±0.01), (0.46±0.02), (0.88±0.06) and (1.03±0.01) g, respectively. The maximum tensile force of liquid plasmatrix clots in 3, 5, 8 and 12 min group were (0.55±0.03), (0.56±0.03), (1.31±0.05) and (1.38±0.02) N, respectively. SEM results showed that the fibers inside the liquid plasmatrix clot became denser with increased centrifugation time. Compared with other groups, the concentrations of leukocytes, neutrophils, monocytes and lymphocytes in 8 min group were the highest, and the distribution of cell was more even. Compared with other groups, the efficiency of stimulating gingival fibroblast migration in 8 min group was the best (1.60±0.01). Fluorescence staining test showed that the liquid plasmatrix clot exudates could make gingival fibroblasts more stretched compared with control group. Conclusions: The present study shows that liquid plasmatrix prepared by centrifugation with 500 ×g centrifugal force for 8 min has higher concentration of viable cells and the ability to promote the migration of gingival fibroblasts.

Changes in root and alveolar bone before and after treatment by retracting the upper incisors / 华西口腔医学杂志

OBJECTIVE@#Using cone beam computed tomography (CBCT) in image measurement on the patients with maxillary protrusion, the study aims to identify the changes in root and alveolar bone before and after treatment by upper incisor retraction.@*METHODS@#The study was conducted on 37 patients who have received orthodontic treatment from January 2014 to December 2015. The sample comprised 17 males and 20 females, with an average age of 14.5 years. The patients underwent extraction of bimaxillary premolars and given maximum anchorage to retract the upper incisors. The adducent angle, adducent amount, and the amount of elongation of the upper incisor teeth were measured by cephalograms. The patients were scanned by NewTom VGi to obtain CBCT data before and after treatment with upper incisor retraction. Using the NewTom NNT tool, we obtained the multiple planar reconstruction and then adjusted the coronal, axial, and sagittal axis. The sagittal section of the long axis of the maxillary central incisor through the incisal edge and root apex was selected to measure the changes in the root and alveolar bone before and after incisional treatment.@*RESULTS@#Before and after retracting the upper incisors, the adducent angle of central incisor measured 12.92°±6.43°. Adducent amount of the incisors reached (5.54±2.21) mm. Incisor extension amount totaled (0.60±0.95) mm. Root absorption length was (0.81±0.46) mm. Root absorption rate was 6.80%±3.60%. Statistical differences were observed in the changes in root length before and after incisor retraction (P<0.05). After upper incisor retraction, increasing distance from the labial side alveolar ridge to the cemento-enamel junction reached (0.20±0.22) mm. After treatment, we observed that the height of the labial-side alveolar bones decreased and showed statistical difference with the height of labialside alveolar bones before treatment (P<0.05). The results show the correlation between root absorption and horizontal displacement of maxillary center incisor and the distance from the upper incisor apex to labial cortical bone. A correlation also exists between the variable quantity of the labial-side alveolar bones and adducent angle of the upper incisor, with a correlation coefficient of 0.354. The results also show significant difference (P<0.05).@*CONCLUSIONS@#After compensatory treatment of patients with maxillary protrusion, the root length of upper incisor was absorbed remarkably. The height of the labial-side alveolar bones was reduced. A greater tooth movement or beyond the anatomical limitations and alteration limits of the alveolar bone can easily lead to root resorption. A negative correlation exists between the variable quantity of the labialside alveolar bones and adducent angle of the upper incisor.

Comparison of ozil and traditional phacoemulsification mode in different grade nucleus cataract / 国际眼科杂志(Guoji Yanke Zazhi)

AlM: To evaluate the application of phacoemulsification of different nucleus density using ozil and traditional mode.METHODS: A total of 89 eyes (72 patients ) ( visual acuity was of 0. 6 and above after 1mo follow - up) of different nucleus density level (LOCS Ⅱ criteria grade Ⅲ 46 eyes, grade Ⅳ and more 43 eyes ) were randomly assigned into 2 groups: ozil group (group A), grade Ⅲ 22 eyes (torsional energy 80% lP on);grade Ⅳ and more 17 eyes (torsional energy 100% lP on); Traditional mode group(group B), grade Ⅲ 24 eyes (energy 50% ), grade Ⅳ and more 26 eyes (energy 60% ~ 70% ) . All surgeries were performed by the same experienced surgeon,who use the chop to split the nucleus in the application of phacoemulsification. lntraoperative parameters were total equivalent pawer ( TEP ), cumulative dissipated energy ( CDE ) and effective phaco time ( EPT ) and surgical complications. The effectiveness of the two modes in dealing with hard - core cataract phacoemulsification were compared.RESULTS: GradeⅢ nucleus dealing: TEP of ozil group was significantly higher than that of the traditional mode group [(24.58±7.78)% vs (13.84±1.97) %]and EPT of ozil group was significantly lower than that of the traditional mode group (50. 59±14. 73 s vs 60. 19±9. 04 s, P<0. 05). CDE showed no difference between two groups [(13.12±6.03)% vs (13.38±2.85)]. Grade Ⅳ and more nucleus dealing: CDE [( 34. 10 ± 13. 48 )%] and EPT (104. 64±32. 4s) of the ozil group was higher than CDE [(30. 31 ± 13. 48)%] and EPT (93. 01 ± 41. 01s) of the traditional mode group, but there were no difference between two groups. Obstacles in the needle of phacoemulsification surgery: ozil group 4/17, traditional mode group 2/26 (χ2=2. 16, P=0. 14).CONCLUSlON: Bothozil and traditional mode can deal with all kinds of nucleus effectively and safely. Ozil mode is more efficacy and quick deal in gradeⅢnucleus. With the increase of nucleus hardness, the traditional mode still have the advantage of high efficiency and no obstacle to dealing patients with grade Ⅳ and more nucleus. Choose according to different nuclear hardness ultrasonic model can improve the operation efficiency and security.

ln-the-bag lOL stability of super high myopic eyes with different size of capculorhexis / 国际眼科杂志(Guoji Yanke Zazhi)

Abstract?AlM: To compare the in- the- bag lOL stability of different size of continuous curvilinear capsulorhexis ( CCC) in super high myopic eyes with cataract underwent phacoemulsification.?METHODS: A total of fourteen cataract patients with bilateral super high myopia were included, Phaco+lOL implantation were performed on both eyes, one eye was randomly classified into 5mm diameter CCC observation group, the fellow eye was 6mm diameter CCC observation group. Cataract extraction combined with in-the-bag intraocular lens implantation ( lOL ) with the type of hydrophilic acrylic aspheric intraocular lens ( MCX11 ) by well experienced surgeon. The operation was running smoothly, the next day after operation, all patients were confirmed by lmage-pro plus6. 0 image analysis software for the measurement of main meridian sac diameter with target capsulorhexis diameter no more than ±0. 2mm. Slit lamp examination of lOL shape and position, changes of anterior capculorhexis edge, refraction, anterior chamber depth was measured and observed of all eyes after operation 1wk;1, 3, 6mo.? RESULTS: Compared with postoperation 1wk, the former sac diameter of two groups were slightly smaller at postoperation 1mo, with no statistically significant difference between two groups. 5mm diameter CCC observation group had slightly hyperopic shift in follow-up 1-3mo, 6mm diameter CCC observation group had hyperopic shift in follow-up 1mo, and getting stable after 1mo. Refraction change was related to anterior chamber depth changes. 5mm diameter CCC observation group had 3 minor loop folding in follw-up 3mo.?CONCLUSlON:Relatively smaller continuous curvilinear capsulorhexis in super high myopic eyes underwent cataract surgery may cause a tendency of uneven construction or effective lens position change of in-the-bag lOL. Unusual refraction change or shift after operation 1mo could suggest instability of lOL, early noticing or interruption could prevent further complications.

Expression of glypican-3, hepatocyte antigen, alpha-fetoprotein, CD34 and CD10 in hepatocellular carcinoma: a clinicopathologic analysis of 375 cases / 中华病理学杂志

<p><b>OBJECTIVE</b>To explore prognostic factors and the expression of glypican-3, hepatocyte antigen (HEP), alpha-fetoprotein (AFP), CD34 and CD10 in hepatocellular carcinoma (HCC) and their prognostic value.</p><p><b>METHODS</b>Clinicopathologic data were analyzed in 375 cases of HCC, in which 80 cases with follow-up were examined by immunohistochemical staining to detect the expression of glypican-3, HEP, AFP, CD34 and CD10 proteins. The relationship between the proteins expression and clinicopathologic features was also evaluated.</p><p><b>RESULTS</b>Tumor number (P = 0.000), tumor size (P = 0.025), tumor differentiation (P = 0.001) and vessel invasion (P = 0.000) were closely related to prognosis of HCC patients; the expression of glypican-3 (66/80,82.5%; P = 0.002), HEP (64/80,80.0%; P = 0.021), AFP (38/80,47.5%; P = 0.014) and CD10 (28/80,35.0%; P = 0.002) was significantly related to tumor differentiation; that of glypican-3 was significantly correlated with tumor number and presence of satellite nodules (P = 0.028) and that of AFP and CD10 was significantly correlated with portal vein thrombi (P = 0.000, P = 0.010). On Kaplan-Meier regression analysis, both low expression of HEP and high expression of AFP were closely related to poor prognosis.</p><p><b>CONCLUSIONS</b>Tumor number, size, differentiation and vessel invasion were important factors affecting the prognosis of patients with HCC. HEP and AFP have prognostic significance in HCC.</p>

Effect of Colquhounia root tablet on IL-2 and IFN-γ mRNA expression in rats with experimental allergic encephalomyelitis / 浙江大学学报·医学版

<p><b>OBJECTIVE</b>To investigate the effect of Colquhounia root tablet on IL-2 and IFN-γ mRNA expression in experimental allergic encephalomyelitis (EAE) of rats.</p><p><b>METHODS</b>The allergic encephalomyelitis model was established in Wistar rats by immunization with myelin basic protein of spinal cord of guinea pig and complete Freund's adjuvant. The rats in treatment group received Colquhounia root tablet (300 mg*kg(-1), BID). The symptom of EAE was observed; pathological feature and myelin of brain and spinal cord were detected with HE stain and Loyez's stain, respectively. The expressions of IL-2 and IFN-γ mRNA were assayed by RT-PCR.</p><p><b>RESULTS</b>No EAE symptoms were developed in treatment group, the expressions of IL-2 and IFN-γ mRNA were 0.345 ± 0.032 and 0.353 ± 0.023, which were significantly lower than those of model group (P<0.01). The histopathologic examinations revealed that less inflammation cells around vessels and demyelination in white matter of brain and spinal cords were observed in treatment group than in model group.</p><p><b>CONCLUSION</b>Colquhounia root tablets are effective in treatment of EAE of rats, which may be associated with inhibition of the expression of IL-2 and IFN-γ mRNA.</p>

Effects of propofol anesthesia and sevoflurane anesthesia on the differentiation of human T-helper cells during surgery / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Surgical stress causes a helper T-cell type 2 (Th2)-dominant status and disturbs the Th1/Th2 cytokine balance. Anesthesia can suppress the stress response to surgery, therefore it may inhibit the imbalance in the Th1/Th2 ratio. In this study, we assessed if propofol anesthesia and sevoflurane anesthesia influence the Th1/Th2 cytokine balance, and which anesthesia method better attenuates this ratio.</p><p><b>METHODS</b>Twenty-eight patients with an American Society of Anesthesiologists (ASA) physical status of I undergoing laparoscopic cholecystectomy were selected. They were randomly allocated into two groups of 14. Group 1 received propofol anesthesia by a target-controlled-infusion (TCI) pump and group 2 received sevoflurane anesthesia. Non-invasive blood pressure, heart rate, and end-expiration CO2 partial pressure were monitored during anesthesia. The depth of anesthesia was measured using the bispectral index (BIS), and maintained between 50 and 60. During surgery we adjusted the doses of propofol and sevoflurane according to the BIS. Samples of peripheral blood were taken before the induction of anesthesia (T1), after the induction of anesthesia (T2), at the beginning of surgery (T3), at the end of surgery (T4) and on the first day after surgery (D1). Blood samples were analyzed to give the Th1/Th2 ratio and plasma level of cortisol.</p><p><b>RESULTS</b>Non-invasive blood pressure, heart rate and end-expiration CO2 partial pressure were not notably different in the two groups. At T4, the percentage of T1 cells was higher in group 1 and had statistical significance (P < 0.05). The percentage of T2 cells was not significantly different in the two groups. At T4, the difference in the Th1/Th2 ratio was significantly different. At T3, T4, and D1, the plasma level of cortisol was lower in group 1 (P < 0.05).</p><p><b>CONCLUSION</b>Compared with sevoflurane, propofol can preferably promote Th cells to differentiate into Th1 cells and inhibit surgical stress. Propofol may therefore be immunoprotective for such patients.</p>

Expression and clinicopathologic significance of GPC3 and other antibodies in well-differentiated hepatocellular carcinoma / 中华病理学杂志

<p><b>OBJECTIVE</b>To study the expression and significance of GPC3, CD10 and CD34 in hepatocellular carcinoma (HCC), dysplastic nodules (DN), cirrhotic regenerative nodules (CRN), focal nodular hyperplasia (FNH) and hepatocellular adenoma (HA).</p><p><b>METHODS</b>Immunohistochemical study for GPC3, CD10, CD34 and AFP was performed on 80 cases of HCC (30 cases of well-differentiated HCC and 50 cases of advanced HCC), 30 cases of DN (18 cases of high-grade DN and 12 cases of low-grade DN), 36 cases of CRN, 20 cases of FNH and 20 cases of HA.</p><p><b>RESULTS</b>(1) The positive expression rate of GPC3 was 92% (46/50) in advanced HCC, 66.7% (20/30) in well-differentiated HCC, 2/18 in high-grade DN, and 0 in low-grade DN, CRN, FNH and HA. The expression rate of GPC3 in well-differentiated HCC was lower than that in advanced HCC and higher than that in high-grade DN (P < 0.05). (2) The negative expression rate of CD10 was 78% (39/50) in advanced HCC, 43.3% (13/30) in well-differentiated HCC, 20% (4/20 and 4/20) in both FNH and HA, 2.8% (1/36) in CRN and 0 in both high-grade DN and low-grade DN. The occurrence of CD10-strongly positive cells was 2% (1/50) in advanced HCC, 16.7% (5/30) in well-differentiated HCC, 15/18 in high-grade DN, 11/12 in low-grade DN, 80.6% (29/36) in CRN and 60% (12/20 and 12/20) in both FNH and HA. The positive expression rate of CD10 in well-differentiated HCC was higher than that in advanced HCC and lower than that in high-grade DN, low-grade DN, CRN, FNH and HA (P < 0.05). (3) The positive expression rates of CD34 in advanced HCC and well-differentiated HCC ranged from 25% to 100% [and strongly positive in 76% (38/50) and 70% (21/30), respectively]. The rates in high-grade DN and low-grade DN ranged from 5% to 25% (and weakly positive in 16/18 and 10/12, respectively). In CRN, the rate ranged from 0 to 5% [and weakly positive in 27.8% (10/36)]. In FNH and HA, the positive rates ranged from 25% to 50%. The positive expression rate of CD34 in well-differentiated HCC was significantly higher than that in high-grade DN, low-grade DN, CRN, FNH and HA (P < 0.05). (4) The positive expression rate of AFP was 44% (22/50) in advanced HCC, 20% (6/30) in well-differentiated HCC, no expression in DN, LCN, LCN, FNH and HA. The positive expression rate of AFP in well-differentiated HCC was lower than that in advanced HCC and higher than that in LCN, FNH and HA. The different expression had statistical significance (P < 0.05).</p><p><b>CONCLUSIONS</b>GPC3 is a relatively sensitive and specific marker in pathologic diagnosis of HCC. When coupled with immunohistochemical results of CD34, CD10 and AFP, GPC3 is useful in differentiating HCC from DN, LCN, FNH and HA.</p>

Clinicopathologic features of hepatocellular carcinoma: an analysis of 185 cases / 中华肿瘤杂志

<p><b>OBJECTIVE</b>To analyze the clinicopathologic features and prognostic factors of hepatocellular carcinoma.</p><p><b>METHODS</b>Clinicopathological data of 185 cases of hepatocellular carcinoma treated in our hospital between 2000 and 2005 were collected and their follow up information was obtained. The clinicopathological features and prognostic factors were analyzed by Kaplan-Meier and multivariate Cox regression analysis.</p><p><b>RESULTS</b>The 185 patients had a median age of 51.0 ± 11.0 (range, 19 - 72) years. The apparent peak incidence age was 40 to 60 years old, and the ratio of male to female was 10.6:1; the 3- and 5-year postoperational survival rates were 52.0% and 38.0%; respectively. The tumour numbers (P = 0.000), tumor size (P = 0.025), histological pattern (P = 0.000), nuclear features (P = 0.000), differentiation (P = 0.001) and vascular invasion (P = 0.000) were significantly correlated with prognosis. The postoperational survival times of patients with thin trabeculae pattern, compact pattern and pseudoglandular pattern were significantly longer than that of thick trabeculae, scirrhous pattern, and solid pattern (P ≤ 0.009). The postoperational survival time of patients with nuclear features grade 1 and 2 was significantly longer than that of grade 3 and 4 (P = 0.000). Multivariate Cox regression analysis showed that the tumor number (P = 0.001), tumor size (P = 0.042), nuclear features (P = 0.023) and vascular invasion (P = 0.000) were independent prognostic factors.</p><p><b>CONCLUSION</b>The postoperational survival rate of HCC patients is low. The tumor size, tumor number, differentiation and vascular invasion are major prognostic factors of hepatocellular carcinoma, The higher is the tumor number, tumor size, degree of differentiation and presence of vascular invasion, the higher risk of mortality is.</p>

Analysis of normal eye anterior segments in different ages / 上海第二医科大学学报

Objective To measure and conduct statistic analysis of normal eyes by Pentacam. Methods Two hundred and twenty-one healthy people (442 eyes) underwent examinations of Pentacam, and they were divided into 5 groups by age: <40 years old group (50 people, 100 eyes), 40-49 years old group (50 people, 100 eyes), 50-59 years old group (50 people, 100 eyes), 60-69 years old group (50 people, 100 eyes) and >70 years old group (21 people, 42 eyes). Results With the increase of age, there were significant differences in chamber volume, chamber angle and anterior chamber depth among age groups (P<0.05). In elder age groups, there were significant differences in these parameters between males and females (P<0.01). Conclusion Anterior segment parameters are significantly correlated with age. After 60 years old, the anterior segment parameters become significantly different with gender.

Forceps imprint in the AcrySof ReSTOR IOL Optic / 国际眼科杂志(Guoji Yanke Zazhi)

We describe two cases in which a forceps imprintdeveloped in the AcrySof ReSTOR IOL optic whileinserting these IOLs into the cartridge with straightclamping forceps. In case 1 ,the AcrySof ReSTOR IOL wasexplanted and observed under scanning electronmicroscopy (SEM). The SEM showed that the stepdesign of ReSTOR Multifocal IOL was well maintained. Incase 2, visual acuity, contrast sensitivity and wavefrontmeasurements were performed and no specific changeswere found. Strong evidence does not exist that suggeststhe on-axis forceps imprint can significantly compromisevisual acuity.

Real time fluorescent quantitative RT-PCR in determination of Dicer mRNA in primary hepatocellular carcinoma / 第二军医大学学报

Objective: To develop a real time fluorescent quantitative reverse transcriptase polymerase chain reaction (RT-PCR) system for determining the expression of Dicer mRNA in human hepatoma cell lines and 20 samples of primary hepatocellular carcinoma (PHC) tissues. Methods: The specific primers, designed according to the complete sequence of Dicer mRNA, and the fluorescence dye SYBR Green I were used for RT-PCR amplification. The fluorescence was monitored in a real time manner. The expression levels of Dicer mRNA in samples were calculated according to the standard curve and the nonspecific amplifications were excluded by melting curve analysis. The mRNA levels of Dicer were presented as the ratios of Dicer mRNA to 18S rRNA. Results: The linear detection range of this system was from 5 × 102 to 5 × 109 copies/μl and the coefficient of variation values for intra-experimental and inter-experimental reproducibility ranged from 4.13% to 19.72% and from 6.25% to 18.76%, respectively. The expression levels of Dicer mRNA in HBV positive hepatoma cell line HepG2.2.15 or in HBV negative hepatoma cell line HepG2 were significantly lower (P<0.05) compared to those of the normal liver cell line WRL-68; and those in PHC tissues were lower compared to those in the corresponding adjacent tissues of PHC (P<0.05). Conclusion: Real time fluorescent quantitative RT-PCR has good sensitivity, specificity and reproducibility in determining Dicer mRNA levels. Determination of Dicer mRNA levels in hepatoma cell lines and PHC tissues lays a good theoretical foundation for further studying the mechanism of PHC.

Effects of Epidermal Growth Factor on Cell Proliferation and Cell Cycle of Cultured Bovine Corneal Endothelial Cells in vitro / 上海第二医科大学学报

Objective To observe the effects of epidermal growth factor (EGF) on cell proliferation and cell cycle of cultured bovine corneal endothelial cells. Methods Bovine corneal endothelial cells were cultured with different concentrations of hEGF (1, 10 and 100 ng/mL). MTT test was performed to evaluate the cell proliferation. The bovine corneal endothelial cells were divided into two groups:control group (cultured in DMEM) and EGF-stimulated group (cultured in DMEM with EGF). Flow cytometry was performed to determine the cell cycle phases on the third and seventh day. Results Compared with the control, EGF enhanced the cell proliferation in a dose-related response. 10 ng/mL and 100 ng/mL EGF were much more effective than 1 ng/mL.On the third day, S phase cells accounted for 24.5% and G_2-M phase cells 0.08% in the control group,while 24.6% and 0.06%, respectively in the EGF-stimulated group. However, on the seventh day, those came to 20.8% and 0.41% in the control group, and 18.2% and 1.55% in the EGF-stimulated group,indicating a significant change in the cell cycle (P

Preliminary evaluation of biodegradable implant for intraocular sustained-release of cefuroxime in rabbits / 上海第二医科大学学报

Objective To evaluate the anti-infection effects of biodegradable implant for sustained release of cefuroxime,which can be implanted into the anterior chamber in rabbits. Methods The implants for sustained release of cefuroxime were prepared with appropriate mixtures of cefuroxime axetil(CAE),poly(lactic-glycolic) acid(PLGA) and polyvinyl pyrrolidone by solvent evaporation method.Fifty rabbits were selected and divided into experiment group(n=35) and control group(n=15).The concentrations of cefuroxime in aqueous humor 0.5,1,2,6 and 24 h after subconjunctival injection of 125 mg cefuroxime were measured in control group,and those in aqueous humor and plasma 1,2,3,5,7,14 and 28 d after implantation into anterior chamber were detected in experiment group.Besides,for experiment group,the intraocular pressure before and after the implantation were obtained;the inflammation of anterior chamber was routinely observed by slit lamp;and cornea tissues were harvested for scanning electron microscopy and light microscopy. ResultsThe concentration of cefuroxime in aqueous humor in control group reached the highest at 0.5 h after injection of cefuroxime(47 736.18 ng/mL),while that was extremely low 24 h later(10.92 ng/mL).The concentrations of cefuroxime in aqueous humor were higher than 500 ng/mL within 7 d after implantation,and that was very low at d28(59.20?39.05 ng/mL).And the plasma concentrations of cefuroxime had been at lower levels ever since the implantation(

Pentacam anterior segment analysis system in evaluating the efficacy of phacoemulsification for angle-closure glaucoma / 第二军医大学学报

Objective:To observe the changes in the anatomy of anterior segment before and after phacoemulsification for treatment of angle-closure glaucoma by Pentacam system,so as to assess the efficacy of phacoemulsification combined with artificial lens implantation(ALI)in treatment of early-and middle-stage angle-closure glaucoma.Methods:Forty-two patients with early-and middle-stage angle-closure glaucoma(44 eyes)were included in the present study.The central anterior chamber depth,anterior chamber volume and peripheral anterior chamber angle were examined by Pentacam system pre-operatively and 1 day,1 week and 3 months post operatively.Meanwhile,A ultrasound was used to examine the anterior chamber depth before and 3 months after operation.and the results were compared with those by Pentacam system.Results:Pentacam system could clearly demonstrate the 3-dimensional structures of the anterior eye segment before and after operation.The central anterior chamber depth,anterior chamber volume and anterior chamber angle were increased significantly after operation(P

Study on the relationship between the functional integrity of sperm membrane and seminal parameters related to CASA / 中华男科学杂志

<p><b>OBJECTIVES</b>To evaluate the relationship between the functional integrity of sperm membrane and seminal parameters related to CASA.</p><p><b>METHODS</b>Thirty-eight fertile and one hundrend and twenty four infertile males were tested the functional integrity of sperm membrane by the kit and parameters by CASA.</p><p><b>RESULTS</b>There was a significant difference in the functional integrity of sperm membrane between fertile and infertile group (P < 0.01). The items related to CASA between normal and abnormal group in the functional integrity of sperm membrane had a remarkable difference, except motion degree, seminal volume and pH.</p><p><b>CONCLUSIONS</b>To determine the functional integrity of sperm membrane can be used as a necessary supplementary method for CASA, and it has clinical significance in diagnosing, treating and researching male infertility.</p>

Risk factors for critical-ill events of patients with COVID-19 in Wuhan, China: a retrospective cohort study

BackgroundLittle is known about the risk factors for critical-ill events (intensive care, invasive ventilation, or death) in patients with COVID-19. MethodsPatients with laboratory-confirmed COVID-19 admitted to the Wuhan Leishenshan Hospital from February 13 to March 14 was retrospectively analyzed. Demographic data, symptoms, laboratory values at baseline, comorbidities, treatments and clinical outcomes were extracted from electronic medical records and compared between patients with and without critical-ill events. The least absolute shrinkage and selection operator (LASSO) and multivariate logistic regression models were developed to explore the risk factors for critical-ill events. A risk nomogram was established to predict the probability for the critical-ill events. Survival analysis of patients with critical-ill events was performed by the Kaplan-Meier method. Results463 COVID-19 patients were included in this study, of whom 397 were non-critically ill and 66 were critically ill (all from the intensive care unit). The LASSO regression identified four variables (hypersensitive cardiac troponin I, blood urea nitrogen, haemoglobin, and interleukin-6) contributing to the critical-ill events. Multivariable regression showed increasing odds of in-hospital critical-ill events associated with hypersensitive cTnI greater than 0.04 ng/mL (OR 20.98,95% CI 3.51-125.31), blood urea nitrogen greater than 7.6 mmol/L (OR 5.22, 95% CI 1.52-17.81, decreased haemoglobin (OR 1.06, 95% CI 1.04-1.10), and higher interleukin-6 (OR 1.05, 95% CI 1.02-1.08) on admission. ConclusionsHypersensitive cTnI greater than 0.04 ng/mL, blood urea nitrogen greater than 7.6 mmol/L, decreased haemoglobin, and high IL-6 were risk factors of critical-ill events in patients with COVID-19. Main pointHypersensitive cTnI greater than 0.04 ng/mL, BUN greater than 7.6 mmol/L, decreased haemoglobin, and high IL-6 were risk factors of critical-ill events (intensive care, invasive ventilation, or death) in patients with COVID-19.