Objective To evaluate the therapeutic efficacy of retrobulbar injection with triamcinolone acetonide (TA) for macular edema caused by retinal vein occlusion (RVO). Design Retrospective case series. Participants 21 eyes of 21 patients with macular edema caused by RVO. Methods Retrobulbar injection with TA 40 mg was performed on 21 eyes. The visual acuity, intraocular pres-sure, fundus fluorescein angiography (FFA) and macular central thickness under the optical coherence tomography (OCT) were recorded and analyzed before and after treatment. The follow-up duration was 6-11 months. Main Outcome Measures The visual acuity and the macular central thickness of OCT. Result Visual acuity was improved at the end of follow-up in 16 eyes (76.2%) and unchanged in 5 eyes (23.8%). Macular central thickness was (287.55±121.70) μm at the end of follow-up and (617.23±185.58) μm before treatment. The difference was statistically significant(P=0.000). After treatment, the comparison of visual acuity and macular central thickness be-tween CRVO patients and BRVO patients, as well as between ischemic RVO patients and non-ischemic RVO patients had no significant difference (P>0.05). In patients of course less than 6 months, the visual prognosis after treatment is better than that of before treatment (P=0.011, 0.01), while in patients of course more than 6 months, no difference of vision could be detected before and after treatment (P= 0.583). The result of FFA showed decrease of fluorescein leakage. During follow-up, intraocular pressure of all patients was in the nor-real range. Recurrence of macular edema was found in 8 eyes 2 to 6 months after treatment. Conclusions Retrobulbar injection with TA is a safe, effective, and easy method to treat macular edema caused by RVO. Early treatment can get better efficacy. (Ophthalmal CHN, 2009, 18: 254-256)

Objective To investigate the effect of pantoprazole (proton pump inhibitor, PPI) and gefarnate (gastric mucosa protectant) on the prevention of upper gastrointestinal bleeding in patients undergoing post-percutaneous coronary intervention (PCI) dual anti-platelet therapy.Methods This research included 1263 patients taking enteric aspirin and clopidogrel after PCI.The cases were divided into 4 groups: routine treatment group (n=332), PPI group (n=318), gastric mucosa protectant group (n=299), and PPI+gastric mucosa protectant group (n=314).A follow-up for 6 months was observed including gastrointestinal symptoms, upper gastrointestinal bleeding, major adverse cardiac events (MACE), and adverse reactions.Results There were 52 cases of upper gastrointestinal bleeding within 6 months, including 21 cases from routine treatment group, 9 from PPI group, 15 from gastric mucosa protectant group, and 7 from PPI+gastric mucosa protectant group.The incidence of upper gastrointestinal bleeding among the 4 groups within 6 months was statistically different (X2=8.883, P=0.031).The routine treatment group had significant higher rate than the PPI group and the gastric mucosa protectant group (P<0.05), while among other groups there was no significant difference (P>0.05).The upper gastrointestinal bleeding occurred within 3 postoperative months in 34 out of 52 cases (65.4%).There was no statistical significance among the four groups in regard to bleeding occurrence time (X2=4.212,P=0.648).Conclusions Patients undergoing post-PCI dual anti-platelet treatment can reduce the incidence of gastrointestinal bleeding by taking pantoprazole or combined with gefarnate.Intervention against upper gastrointestinal bleeding should start on the first day after PCI and last for a minimum of 3-6 months.

Objective To investigate the effect of outpatient nursing intervention in patients with chronic rhinosinusitis(CRS)on the aspects of clinical efficacy, quality of life and nursing satisfaction after medical therapy. Methods The clinical efficacy according to the judgment standard for clinical effect was valued. Medical outcome study short-form 36-items health survey (SF-36) was used to assess the quali?ty of life of the subjects. Satisfaction Questionnaire was used to evaluate the satisfaction scale of patients. Eighty subjects with CRS were randomly divided into the control group (40 cases) and the trial group (40 cases). The trial group was given nursing intervention on basis of usual nursing. In three months after treat?ment, the data and statistics analysis was purely descriptive by SPSS 20.0. Results Clinical efficacy:in the group, nineteen subjects were cured,fourteen subjects were improved and inefficacy occurred in seven subjects. The effective rate was 77.5%(31/40). In the trial group, twenty-six subjects were cured,twelve subjects were improved and inefficacy occurred in two subjects. The effective rate was 95.0%(38/40). There were differences in general data between the two groups (χ2=5.165,P=0.023). Quality of life:the average score of the control group was 58.10±5.04, while the average score of the trial group was 72.22±5.63, the average score of quality of life in the trial group was significantly higher than that in the control group(t=3.08,P=0.025). Nursing satisfaction:there were significant differences in nursing satisfaction between the control group and the trial group (u=-7.048,P=0.000). Conclusions Outpatient nursing intervention can improve the effect of patients with chronic nasal sinusitis after medical therapy, improve the quality of life and improve nursing satisfaction.

Objective To determine the localization of iRhom2 and its mutant proteins of Uncv mice in Vero cells by PKH26 combined with Hoechst 33258 staining.Methods The cell membrane was stained with PKH26, and the nuclei were stained with Hoechst 33258 dye, and observed by laser scanning confocal microscopy.Results It was found that wild iRhom2 was distributed in the cytoplasm, and its iRhom2mut was present both in cytoplasm and cell nuclei.Conclusions The results of our study suggest that a deletion in N-terminal of iRhom2 affects its subcellular localization.

Objective The objective was to look for cocaineand amphetamine-regulated transcript peptide(CART) receptors or proteins interacted with CART.Methods A cDNA library from rat brain was constructed.Then the BacterioMatch two-hybrid system was used to screening for proteins interacted with CART by using CART41-102 as bait.Results The cDNA library and bait pBT-CART41-102 were constructed successfully.The library harvested 3.37?106 individuals,and the reconstruction rate was 98.5%.5.01?106 cotransformed clones were screened,93 clones were conformtively identified to interacting with CART and were DNA sequenced.By bioinformation analysis,6 known proteins interacted to CART were identified.Other unknown interaction proteins with short exactly similiar motif to 22 membraneproteins or receptors were also identified.Conclusion CART might interact to proteins for energy balance,cell proliferation and enzymes related to protein processing and degrading.

Antibodies ; immunology ; Graft Rejection ; drug therapy ; immunology ; prevention & control ; Graft Survival ; immunology ; Humans

Abstract: Objective To investigate the dynamic changes and clinical significance of specific antibodies in patients with coronavirus disease 2019 (COVID-19). Methods A retrospective study was conducted to collect 141 adult COVID-19 survivors who were followed up in the Eighth Hospital affiliated to Guangzhou Medical University from February 6, 2020, to March 24, 2021. The patients were divided into severe group (severe and critical) and non-severe group (light and ordinary) according to the diagnosis at discharge. The antibody changes of the two groups were compared and analyzed at 1 week, 2 weeks, 1 month, 3 months, 6 months and 1 year after discharge. Results After discharge from hospital, the positive rate of IgG in the severe group was 95.00% after 1 week and 100.00% in the following year, in the positive rate of IgG in the non-severe group was 59.50% after 1 week, 90.08% in 6 months and 76.03% in one year. The level of serum IgG in the severe group was significantly higher than that in non-severe group (Z=-2.441, P=0.015). One-year follow-up: the serum IgG in the severe group was significantly higher than that in the non-severe group (Z=-3.410, P=0.001). The serum IgM level of the severe group after one year follow-up was lower than that of the six months follow-up, the difference was statistically significant (Z=-2.259, P=0.024). The serum IgG and IgM level of the non-severe group after one year follow-up was lower than that of the six months follow-up, the difference was statistically significant (Z=-7.37, P<0.01; Z=3.850, P<0.01). Conclusion The level of serum protective antibody in COVID-19 patients remained high within 6 months after discharge, and remained stable within 1 year after discharge. The antibody titers in the severe group were significantly higher than those in the non-severe group and lasted for at least one year. COVID-19 survivors receive 1 year of natural immune protection, and patients with critical conditions receive immunity for longer periods of time.

AIM:To establish some HPLC-digitized fingerprint spectrum(HPLC-DFPS)in Liuwei Dihuang Dripping Pill preparation and to apply it to identification of medicinal materials.METHODS:Based on loganin and paeonoside contents adopted as qualitative and quantitative factors,relative retention value as creteria,RPHPLC was carried out on inensil ODS:column,mobile phase consisted of methanol-water(0.2% formyl acid),detection wavelength was set at 240 nm.RESULTS:Using above optimum chromatograph conditions,HPLC-DFPS of relative medicinal materials andLiwei Dihuang Dripping Pillpreparation were established.By comparison a group of characteristic peaks could be used to identify medicinal materials.CONCLUSION:This result indicates that it is practical to use HPLC-DFPS for identification of Liawei Dihuang Dripping Pill.

To investigate a key strategy of the total synthesis of salacinol. Methods: A simplified analogue of salacinol (1),1-(3-sulfooxypropyl)tetrahydrothiophenium inner salt (2) was designed and synthesized by a coupling reaction between tetrahydrothiophene (THT) and 3-iodopropanol (3-IPA) followed by the esterification of the resulting sulfonium with sulfur trioxide pyridine complex (SO3*Py). Replacement of the alkylating reagent (3-IPA) of THT led to the predominate formation of a undesirable cyclic compound,2,2-dioxo-1,3,2-dioxathiane (7). Resutls:This model experiments indicated that the tandem synthetic process leading to the sulfonium sulfate 2 could be applied for the total synthesis of salacinol (1) as an alternative method.

Objective To investigate the effect of circadian rhythm on the duration of neuromuscular blockade (NMB) elicited by atracurium. Methods Sixty-one ASA Ⅰ or Ⅱ patients aged 18-55 yr with body mass index of 18-24 kg/m2 undergoing general anesthesia were enrolled in this study. Anesthesia was induced with fentanyl 2 μg/kg and propofol 2 mg/kg. Atracurium 0.75 mg/kg was injected iv as soon as the patients lost consciousness . NMB was assessed by TOF-stimulation of ulnar nerve using TOF-Watch(R) SX. Tracheal intubation was performed as soon as the first twitch (T1) disappeared. The patients were mechanically ventilation (VT 6-8 ml/kg, RR 12 bpm, I ∶ E 1.0 ∶1.5). PETCO2 was maintained at 35-45 mm Hg. Anesthesia was maintained with continuous infusion of propofol 6-8 mg·kg-1·-1·-1and remifentanil 0.25-0.50 μg·kg-1·min-1 . Anesthesia was performed at 5 time periods: (1) 8:00-11:00, (2) 11:00-14:00, (3) 14:00-17:00, (4) 17:00-20:00 and (5) 20:00-23:00. The duration of NMB produced by atracurium was defined as the interval between the end of atracurium injection and 3% recovery of T2 . The data were analysed using generalised linear models (GLMs) and cosinor method. Results Fifty-three cases completed the study. GLM analysis showed that the duration of NMB was longest at 20:00-23:00 (53 min (95% confidence interval 50-56 min)) and shortest at 11:00-14:00 (43 min (95% confidence interval 39-46 min)), suggesting that there is a significant diurnal variation in the duration of NMB elicited by atracurium. Cosinor method analysis showed that equation of the duration of NMB and time point of atracurium administration was y = 48.05 + 15cos( 15t + 52.66). Conclusion Circadian rhythm can affect the duration of NMB elicited by atracurium, which shows that the duration of NMB is longest at 20:00-23:00 and shortest at 11:00-14:00.