ABSTRACT
Objective:To evaluate the effectiveness and safety of intravitreal injection of different doses of aflibercept for polypoidal choroidal vasculopathy (PCV) with serous pigment epithelial detachment (PED) resistant to ranibizumab.Methods:A non-randomized controlled clinical study was conducted.Seventy-three eyes of 73 patients with PCV and serous PED resistant to ranibizumab were enrolled at the First Affiliated Hospital of Zhengzhou University from January 2019 to December 2020.All patients were treated by intravitreal injection of 2 mg or 4 mg aflibercept according to patients' willingness.2 mg aflibercept or 4 mg aflibercept was intravitreally injected monthly for three consecutive months following pro re nata (PRN) regimen in 2 mg aflibercept group (38 eyes) and 4 mg aflibercept group (35 eyes), respectively.PED height and central macular thickness (CMT) were measured by optical coherence tomography, and the best corrected visual acuity (BCVA) was examined with a visual acuity chart and converted to logarithm of the minimum angle of resolution (LogMAR) unit before injection and 1 month, 2, 3, 6 months from the first injection.Intraocular pressure and treatment-related adverse events were recorded.This study adhered to the Declaration of Helsinki and was approved by an Ethics Committee of The First Affiliated Hospital of Zhengzhou University (No.2021-KY-1252).Written informed consent was obtained from each patient prior to entering study cohort.Results:Thirty-three patients (86.84%) in 2 mg aflibercept group and 30 patients (85.71%) in 4 mg aflibercept group finished the treatment and follow-up, respectively. The PED, BCVA and CMT before treatment and at the end of follow-up were (379.24±95.50) and (280.09±120.50)μm, 0.68±0.27 and 0.51±0.19, (393.96±100.81) and (291.70±44.09)μm in 2 mg aflibercept group, respectively, showing statistically significant differences (all at P<0.05).The PED, BCVA and CMT before treatment and at the end of follow-up were (393.07±93.76) and (278.63±145.07)μm, 0.66±0.31 and 0.48±0.22, (377.43±79.61) and (284.67±84.88)μm in 4 mg aflibercept group, respectively, with statistically significant differences (all at P<0.05).The CMT value in 4 mg aflibercept group was significantly lower than that in the 2 mg aflibercept group in one month after injection ( P<0.05).No severe ocular and systemic adverse events were found during the follow-up, such as retinal detachment, endophthalmitis, cataract, and persistent high intraocular pressure. Conclusions:Both 2 mg and 4 mg aflibercept can effectively treat ranibizumab-resistant PCV with serous PED, and improve the anatomical structure of retina and BCVA.4 mg aflibercept can accelerate the recovery of PED and CMT.
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OBJECTIVE To investigate the epidemic,drug resistance and gene distribution of ESBLs-producing Klebsiella pneumoniae (KPN) from Jiangxi TCM Hospital. METHODS The susceptibility of KPN was detected by MIC PCR was used to detect ESBLs gene. RESULTS There were 42 strains with ESBLs isolated,the positive rate was 35.0%. The drug resistance rate of KPN with ESBLs was higher than that without ESBLs,PCR typing result:TEM 33 (78.6%),SHV 8 (19.0%) and CTXM 29 (69.0%). CONCLUSIONS The ESBLs-producing bacteria have multiple drug resistant genes;TEM and CTXM are the main drug resistant genes in our hospital.
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AimTo investigate cell mediated-immunity induced by porin of Salmonella typhimurium(STM). Methods Level of delayed-type hypersensitivity(DTH), IL-2 of immunized BALB/c mice were determined by footpad swelling,MTT and transfered protective rate of T cells purified by neloy wool were studied with 500LD50 of the bacteria(intraperitoneally). Results A marked level of DTH(3. 6±0. 2,P＜0. 01),IL-2(26.2±4.9,P＜0. 01) and the immuinized T cells transfer protec tive level (42.9％ ,P＜0. 01) was induced by porin from STM. Conclusion These results indicated that porin of STM might in duced stronger CMI in BALB/c mice.
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It is still controversial whether total splenectomy on adult animals would affect their immune function. In this study, total splenectomy and different kinds of splenic preservation operations including splenorrhaphy, partial splenectomy and spleen autotransplantation were performed on adult rats after the porta of the spleen of the rats was artificially ruptured and the splenic artery ligated.In the 4th month after the operations, the hemolysin antibody and the de-layed-type hypersensitivity reaction were determined in the rats. It was found that no significant difference occurred in the hemolysin antibody and the delayed type hypersensitivity reaction among the rats of the control group, the group with total splenectomy, and the groups with different kinds of splenic preservation operations.