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Objective:To investigate the effect of peripheral plus ring size and its potential associations with pupil diameter (PD) on axial length (AL) elongation in myopic patients after wearing orthokeratology lenses.Methods:A case-control study was conducted.One hundred eyes from 100 myopic patients who underwent orthokeratolokgy lenses fitting were enrolled at Beijing Ming Vision and Ophthalmology from January to June 2020.AL and central corneal thickness (CCT) measurements were obtained using Lenstar LS900 ocular biometry, and steep keratometry (Ks), flat keratometry (Kf) were assessed using the TMS-4 corneal topographer.The patients were divided into larger peripheral plus ring diameter (LPPRD) group consisting of 55 eyes with PD<PPRD-0.9 mm and smaller PPRD (SPPRD) group consisting of 45 eyes with PPRD-0.9 mm <PD<PPRD+ 0.9 mm based on PPRD and PD sizes in the tangential difference map.Differences in the above parameters before and after wearing orthokeratology lenses were compared between the two groups.The study followed the Declaration of Helsinki.The study protocol was approved by the Ethics Committee of Ineye Hospital of Chengdu University of Traditional Chinese Medicine (No.2021yh-008). All the subjects and their guardians understood the purpose and method of the study and signed the informed consent voluntarily.Results:The PPRD of LPPRD group was (5.15±0.37)mm 12 months after wearing orthokeratology lenses, which was significantly higher than (4.75±0.32)mm of SPPRD group ( t=0.214, P<0.01). The elongation of AL at 3, 6, 9 and 12 months after wearing orthokeratology lenses were (0.13±0.07), (0.23±0.11), (0.31±0.13) and (0.36±0.41)mm in LPPRD group, and (0.06±0.05), (0.11±0.06), (0.14±0.07) and (0.17±0.08)mm in SPPRD group, respectively.There were significant differences in AL elongation at different time points after wearing orthokeratology lenses between the two groups ( Fgroup=30.527, P<0.01; Ftime=16.528, P<0.01), and the AL elongation at different time points was smaller in SPPRD group than in LPPRD group, showing statistically significant differences (all at P<0.01). Compared to before wearing orthokeratology lenses, Ks and Kf were significantly smaller and CCT was thinner 3, 6, 9, and 12 months after wearing orthokeratology lenses in both groups (all at P<0.01). There was no significant difference in Ks, Kf, and CCT between the two groups (all at P>0.05). There was no significant difference in PD at different time points before and after wearing orthokeratology lenses between the two groups ( Fgroup=1.133, P=0.293; Ftime=231.427, P=0.112). Conclusions:The size of peripheral plus ring and its relationship with PD are key factors influencing the AL elongation rate in myopic patients after wearing orthokeratology lenses.With smaller PPRD, patients have slower AL elongation and better myopia control.
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Objective:To observe the effects of ultrasound-guided paravertebral nerve block combined with general anesthesia on intraoperative stress response, hemodynamics and postoperative pain of patients undergoing laparoscopic cholecystectomy.Methods:A total of 92 patients undergoing elective laparoscopic cholecystectomy in Wuhan Third Hospital between January 2017 and August 2019 wereselected. They were divided into the control group (63 cases) and the observation group (29 cases) by voluntary. The control group were given simple general intravenous anesthesia, and the observation group were given ultrasound-guided paravertebral nerve block combined with general intravenous anesthesia. Changes in hemodynamic parameters and concentrations of blood angiotensin-Ⅱ (AT-Ⅱ) and cortisol (Cor) in the two groups were observed. The cerebral state indexes (CSI) of both groups were recorded, and pain degree of patients was evaluated with the visual analogue scale (VAS).Results:The mean arterial pressure (MAP) and heart rate (HR) of the observation group were higher than those of the control group at 30 min after anesthesia, 30 min after operation, 3 hours after operation ( P<0.05), the stroke volume variation (SVV) was lower than that of the control group ( P<0.05); the AT-Ⅱ, Cor and CSI in the observation group were lower than those in the control group at each time point ( P<0.05); The dosage of narcotic drugs in the observation group was significantly lower than that in the control group ( P<0.05); The recovery time of spontaneous breathing, recovery time, extubation time and respiratory satisfaction time in the observation group were less than those in the control group ( P<0.05), and the VAS scores at 3 h, 6 h and 12 h after operation in the observation group were lower than those in the control group ( P<0.05). Conclusions:Ultrasound-guided paravertebral nerve block combined with general anesthesia can effectively reduce the patient's stress response during laparoscopic cholecystectomy, with good analgesic effect, which is helpful to maintain the hemodynamic stability of patients.
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Objective: To investigate the inhibitory effect of lycorine on human osteosarcoma 143B cells and its underlying molecular mechanism. Methods: Osteosarcoma 143B cells were treated with 0-8 μmol/L lycorine, respectively. Then the effect of lycorine on the proliferation of 143B cells was detected by crystal violet staining, MTT and colony-forming assay. The migration and invasion abilities of 143B cells were detected by scratch wound healing assay and Transwell assay, respectively. The apoptosis of 143B cells was measured by hoechst 33258 staining. The expression levels of migration-and invasion-related proteins matrix metalloproteinase-7 (MMP-7) and MMP-9, as well as apoptosis-related proteins Bcl-2, Caspase 3 and cleaved Caspase 3 (c-Caspase 3) were detected by Western blotting. Furthermore, the transcription activity of T cell factor/ lymphoid enhancer factor (TCF/LEF) was detected by luciferase reporter gene system. The expression levels of β-catenin and its downstream target molecules Cyclin D1 and c-Myc in Wnt/β-catenin signaling pathway were detected by Western blotting. Results: Lycorine significantly inhibited the proliferation, migration and invasion abilities of osteosarcoma 143B cells, and promoted apoptosis (all P < 0.01). The expression levels of migration-and invasion-related proteins MMP-7 and MMP-9 in 143B cells treated with lycorine were down-regulated remarkably (all P < 0.05), and the expression of apoptosis-related protein Bcl-2 was down-regulated, while the expressions of Caspase 3 and c-Caspase 3 were up-regulated (all P < 0.05). The transcription activity of TCF/LEF was significantly decreased (P < 0.01), and the expression levels of β-catenin, c-Myc and Cyclin D1 were all decreased (all P < 0.05) after lycorine treatment. Conclusion: Lycorine may inhibit the proliferation, migration and invasion of human osteosarcoma 143B cells, and promote apoptosis by blocking the activity of Wnt/β-catenin signaling pathway.
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Objective To compare the results of GnRHa stimulation test and GnRH stimulation test in girls with Idiopathic central precocious puberty.Methods The girls aged 6-10 who were diagnosed with early breast development (＜ 8 years old) from January 2016 to June 2018 were randomly divided into GnRHa stimulation test group and GnRH stimulation test group according to clinical manifestations,auxiliary examinations and follow-up.The difference in the results of the stimulation test between the two groups was compared.Results A total of 108 girls were enrolled in this study,and 40 (37％) of the GnRHa stimulation tests were performed.Among them,25 (63％) patients with idiopathic central precocious puberty had the confirmed diagnosis,and the GnRH stimulation test was performed.Of the 68 (63％) patients,30 (44％) had idiopathic central precocious puberty.The peaks of LH in the GnRHa challenge test group and the GnRH challenge test groupwere 11.33 (6.81,15.79) and 7.89 (5.35,14.21),and the FSH peaks were 15.68 (10.18,20.06) and 17.26 (13.34,21.42),showing no significant differences (U =1078.50,P =0.07;U =1617.50,P=0.10).Thepeak values of LH/FSH were0.86 (0.37,1.17)and0.52 (0.31,0.83),respectively,and there was a statistical difference (U =953.00,P =0.01).GnRH challenge test showed the ICPP sensitivity of 90.91％ (81.10％-100.72％),specificity of 94.29％ (86.60％-101.98％),total coincidence rate of 92.65％ (86.44 ％-98.85％),Yoden index of 0.85 (0.72％-0.98％).Sensitivity of the GnRHa challenge test showed the ICPP diagnosis rate of 95.24％ (86.13％-104.35％),specificity of 73.68％ (53.88％-93.48％),total coincidence rate of 85.00％ (73.93％-96.07％),Yoden index of 0.69 (0.47-0.91).Conclusion For the diagnosis of idiopathic central precocious puberty in girls,the GnRHa challenge test is more sensitive than the GnRH challenge test,and the specificity and the Yoden index are both low.Therefore,routine use of GnRHa stimulation test as the replacement of GnRH stimulation test is not recommended.
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Objective To investigate the effect of different doses of ketamine on inflammatory cytokines in rabbits with severe burn at early stage and preliminarily approach its regulatory action on early stage of inflammatory reaction due to stress of trauma.Methods Forty healthy male New Zealand rabbits were randomly divided into four groups in accord with the random number table method: normal control group, scald model group, ketamine analgesia group and ketamine anesthesia group. Before scald, pentobarbital sodium was used for anesthesia, afterwards catheters were inserted into internal jugular vein and internal carotid artery respectively ready for use, and 24 hours later, Ⅲ degree scald at the animal back and buttocks occupying 30% total body surface area (TBSA) was performed as the scald model for all the rabbits except those in normal control group. In ketamine analgesia group, after scald for 0.5 hour, 0.5 mg/kg ketamine intravenous injection was given to the rabbits as the loading dosage and then persistent intravenous pump infusion of 9μg·kg-1·min-1 ketamine was applied for all together 24 hours. In ketamine anesthesia group, after scald for 0.5 hour, 1.5 mg/kg ketamine intravenous injection was given to the rabbits, and then persistent intravenous pump infusion of 45μg·kg-1·min-1 ketamine was applied for 4 hours to maintain systemic anesthesia. In normal control and scald model groups, only intravenous infusion of equal amount of normal saline was given to the rabbits. The amount of intravenous transfusion in each group and the total dosages of ketamine used in ketamine analgesia group and ketamine anesthesia group were recorded. Before scald and 0.5, 6, 12, 24 hours after scald, arterial blood gas analyses were made, and the levels of serum interleukins (IL-1, IL-6) and tumor necrosis factor-α (TNF-α) were determined.Results Although the indexes of blood gas analysis were changed in the four groups, they were all in the normal range, showing that the respiratory function was in the normal range and indirectly reflecting that the circulatory function was also in the normal range, thus the effects on cytokines by factors of respiratory and circulatory functions were ruled out. The levels of IL-1, IL-6 and TNF-α before scald showed no statistically significant differencesamong the four groups (allP > 0.05). From 0.5 hour after scald, the levels of IL-1, IL-6 and TNF-α were markedly higher in model group than those of normal control group [IL-1 (ng/L): 30.27±0.93 vs. 13.79±1.11, IL-6 (ng/L): 47.22±1.49 vs. 46.31±4.12, TNF-α (ng/L): 243.39±20.85 vs. 190.95±14.97, allP < 0.05], and the situation continued until 24 hours after scald; the levels of IL-1, IL-6 and TNF-α from 6 hours after scald were significantly decreased in ketamine analgesia and ketamine anesthesia groups compared with those in the model group, and from 12 hours after scald, the degrees of descent in levels of the above indexes in ketamine analgesia group were more obvious than those in ketamine anesthesia group [IL-1 (ng/L): 19.28±2.51 vs. 40.12±10.31, IL-6 (ng/L): 52.10±4.23 vs. 72.20±10.11, TNF-α (ng/L): 246.03±20.74 vs. 313.71±27.34, allP < 0.05].Conclusion The low-dose ketamine analgesia and ketamine anesthesia have certain degree of inhibitory effect on the expression and release of inflammatory cytokines at the early stage in rabbits with severe burn, the effect of long-term low-dose ketamine analgesia being more significant.
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0. 05); The long-term effective rate was 84. 21% in the treatment group and 54. 55% in the control group with a significant difference between the two groups (P