1.Attraction of different concentrations of glucose solution to Aedes albopictus, Culex pipiens pallens and their egg-laying behaviors
WU Yuyan ; CHEN Enfu ; LIU Qinmei ; LI Tianqi ; WANG Jinna ; LUO Mingyu ; GONG Zhenyu
Journal of Preventive Medicine 2024;36(6):543-547
Objective:
To explore the effects of different concentrations of glucose solution on the survival of Aedes albopictus and Culex pipiens pallens larvae, the attraction to mosquitoes and egg-laying behaviors, so as to provide the reference for developing mosquito control technology based on sugar bait.
Methods:
White porcelain bowls were filled with 100 mL of 3%, 5%, 8%, 10% and 15% glucose solutions. Ten of fourth instar larvae of Aedes albopictus or Culex pipiens pallens were added to each bowl, and the survival of larvae was recorded after 2, 4, 6, 24, 48 and 72 hours. Egg-laying cups containing 5%, 8% and 15% glucose solution were put in mosquito cages containing fully blooded female mosquitoes of Aedes albopictus and Culex pipiens pallens (50 mosquitoes each), and the total number of eggs laid in 72 hours was observed. The analogous site room was filled with fully blooded and starved female mosquitoes of Aedes albopictus and Culex pipiens pallens (100 mosquitoes each), and simple mosquito control buckets containing 5% and 8% glucose solution and black sticky insect plates. The number of mosquitoes and eggs was observed after 6 days. All the above experiments were repeated 3 times using dechlorinated water as the control.
Results:
The 72 hour corrected mortality rates of Aedes albopictus and Culex pipiens pallens larvae gradually increased with the increase of glucose concentration. The glucose solution with 5% and higher concentrations was not suitable for mosquito larvae to survive. The attraction of egg-laying behaviors to Aedes albopictus and Culex pipiens pallens gradually decreased with the increase of glucose concentration. The effects were similar between 5% and 8% glucose solution, with the averages of 686.67 and 682.33 eggs for Aedes albopictus, and 3.00 and 2.33 egg rafts for Culex pipiens pallens. In analogous site room, there were 93.33, 105.00 and 130.33 adult mosquitoes captured on average in the control group, 5% and 8% glucose solution groups, respectively, with 8% glucose solution group more attractive to adult mosquitoes than the control group (F=3.283, P=0.030); there were 70.33, 55.33 and 63.00 Aedes albopictus eggs (eggs counts+larvae counts) on average, respectively, with statistically significant differences among the three groups (H=6.761, P=0.034).
Conclusion
Glucose solution with concentration of 5% or higher can effectively inhibit the survival of Aedes albopictus and Culex pipiens pallens larvae, and attractive to adult mosquitoes and egg-laying behavoirs.
2.Correlation study on the changes of retinal artery angle in idiopathic epiretinal membrane and its correlation with visual acuity and optical coherence tomography classification
Ziyi XIANG ; Jianbo MAO ; Qinmei WANG ; Zhengxi ZHANG ; Yijing CHEN ; Shian ZHANG ; Xiaoya ZHANG ; Jing ZHONG ; Lijun SHEN
Chinese Journal of Ocular Fundus Diseases 2024;40(3):190-195
Objective:To observe the change of retinal artery angle in eyes with idiopathic epiretinal membrane (ERM) and to analyze the relationship between retinal artery angle, ERM classification based on optical coherence tomography (OCT), and visual acuity.Methods:A retrospective cross-sectional clinical study. A total of 187 eyes in 187 patients diagnosed with monocular idiopathic ERM (IERM group) in Department of Ophthalmology of Zhejiang Provincial People's Hospital and the Affiliated Eye Hospital of Wenzhou Medical University at Hangzhou from November 2018 to January 2023 were included in the study. The contralateral healthy eyes were included as the control group. All patients underwent best corrected visual acuity (BCVA), fundus photography, spectral-domain OCT, OCT angiography (OCTA) and axial length (AL) measurement. BCVA examination was performed using the standard logarithmic visual acuity chart, which was converted to the logarithm of the minimum angle of resolution (logMAR) visual acuity. The foveal avascular zone (FAZ) area was measured by OCTA. The central macular thickness (CMT) was measured by spectral domain OCTaccording to the grading criteria of ectopic inner foveal layer (EIFL) was divided into stages 1 to 4 with 42, 45, 62, and 38 eyes, and the IERM group was subdivided into stage 1, stage 2, stage 3, and stage 4 groups accordingly. Image J was used to measure the retinal artery angle and the 1/2 retinal artery angle on fundus images. Multiple linear regression analysis was used to analyze the correlation between BCVA and artery angle, 1/2 artery Angle, CMT, FAZ area and AL.Results:Compared with the control group, eyes in IERM group had worse BCVA ( t=9.727), thicker CMT ( t=12.452), smaller FAZ area ( t=-14.329), smaller artery angle ( t=-9.165) and smaller 1/2 artery angle ( t=-9.549). The differences were statistically significant ( P<0.001). With the increase of IERM stage, the artery angle and 1/2 artery angle decreased significantly ( F=21.763, 12.515; P<0.001). There was no significant difference in artery angle and 1/2 artery angle between stage 1 group and stage 2 group, and 1/2 arterial angle between stage 2 group and stage 3 group ( P>0.05). There were significant differences in artery angle and 1/2 artery angle between the other groups ( P<0.05). There were significant differences in CMT and logMAR BCVA among different classification subgroups in IERM groups ( P<0.05). There was no significant difference in FAZ area between grade 3 group and grade 4 group ( P>0.05). There were significant differences in FAZ area between the other groups ( P<0.05). Correlation analysis showed that decreased artery angle ( P=0.013) and increased CMT ( P<0.001) were associated with decreased BCVA. Conclusions:Compared with healthy eyes, the artery angle decreases significantly with the increase of ERM stage. Decreased retinal artery angle is associated with decreased visual acuity in IERM eyes.
3.Effects of a perioperative whole course composite thermal insulation strategy on complications of cesarean section, maternal coagulation function and serum inflammatory indexes
Yan ZHANG ; Jia YUAN ; Yu CHEN ; Xianfeng WU ; Qinmei SUN ; Hongbing LI
Chinese Journal of Primary Medicine and Pharmacy 2022;29(5):753-757
Objective:To investigate the effects of a perioperative whole course composite thermal insulation strategy on complications of cesarean section, maternal coagulation function and serum inflammatory indexes.Methods:A total of 250 pregnant women who were subjected to cesarean section in Zhoushan Hospital between June 2020 and August 2021 were included in this study. The 125 pregnant women who gave birth using a routine simple thermal insulation strategy from June to November 2020 were assigned to the routine simple thermal insulation group, and those who gave birth using a perioperative whole course composite thermal insulation strategy were assigned to whole course composite thermal insulation group. Two groups of pregnant women underwent cesarean section under subarachnoid block. Volume of intraoperative blood loss was recorded. The incidence of complications such as shivering and postoperative infection was calculated. Platelet count, prothrombin time, activated partial thromboplastin time, thrombin time measured before surgery and 48 hours after surgery were compared between the two groups. Peripheral blood white blood cell count, neutrophil count (N%), C-reactive protein, procalcitonin, interleukin-6 measured 48 hours after surgery were compared between the two groups.Results:Volume of intraoperative blood loss in the whole course composite thermal insulation group was significantly lower than that in the routine simple thermal insulation group [(393.84 ± 79.78) mL vs. (434.80 ± 123.49) mL, t = 3.11, P < 0.05). The incidence of shivering and postoperative infection in the whole course composite thermal insulation group was 10.4% (13/125) and 7.2% (9/125), respectively, which was significantly lower than that in the routine simple thermal insulation group [25.6% (32/125), 18.4% (23/125), χ 2 = 9.78, 7.02, both P < 0.05]. At 48 hours after surgery, prothrombin time, activated partial thromboplastin time, thrombin time in the whole course composite thermal insulation group were (10.28 ± 0.48) seconds, (26.97 ± 2.27) seconds, and (14.09 ± 1.36) seconds, respectively, which were significantly shorter than those in the routine simple thermal insulation group [(11.71 ± 0.27) seconds, (27.96 ± 2.25) seconds, (15.91 ± 1.09) seconds, t = 7.34, 3.43, 11.66, all P < 0.05]. At 48 hours after surgery, white blood cell count, neutrophil count, C-reactive protein, procalcitonin, and interleukin-6 in the whole course composite thermal insulation group were (10.38 ± 2.38) ×10 9/L,(0.79 ± 0.06), (52.79 ± 20.73) mg/L, (0.13±0.42) μg/L, and (55.73 ± 24.38) ng/L, respectively, which were significantly lower than those in the routine simple thermal insulation group [(12.24 ± 7.05) × 10 9/L, 0.81 ± 0.05, (65.38 ± 25.92) mg/L, (0.20 ± 0.97) μg/L, (76.22 ± 39.08) ng/L, t = 2.79, 2.92, 4.24, 8.12, 4.97, all P < 0.05]. Conclusion:Perioperative whole course composite thermal insulation strategy can improve the coagulation function of pregnant women who are subjected to cesarean section under subarachnoid block, reduce volume of intraoperative blood loss, and decrease incidence of shivering, inflammatory reaction, and postoperative infection.
4.Effects of perioperative whole course thermal insulation strategy on extubation, recovery time, coagulation index and the incidence of complications in patients undergoing thoracoscopic surgery
Beilei XIE ; Yan ZHANG ; Qiuqiu CHEN ; Fenna ZHOU ; Qinmei SUN ; Lu HUANG
Chinese Journal of Primary Medicine and Pharmacy 2021;28(4):554-557
Objective:To investigate the effects of perioperative whole course thermal insulation strategy on extubation, recovery time, coagulation index and the incidence of complications in patients undergoing thoracoscopic surgery.Methods:A total of 121 patients who underwent thoracoscopic surgery who received treatment in Zhoushan Hospital from October 2016 to February 2018 were included in this study. Among them, 59 patients who underwent thoracoscopic surgery from October 2016 to February 2017 were included in the simple thermal insulation group, and 62 patients who underwent thoracoscopic surgery from October 2017 to February 2018 were included in the whole process thermal insulation group. Before and 24 hours and 72 hours after surgery, platelet count, prothrombin time, activated partial thromboplastin time and thrombin time were compared between the two groups. Postoperative extubation time and recovery time were recorded. The incidence of shivering, restlessness and other complications was analyzed.Results:Postoperative extubation time and recovery time in the whole process thermal insulation group were significantly shorter than those in the simple thermal insulation group [(8.06 ± 4.60) min vs. (13.98 ± 7.22) min, (47.19 ± 12.97) min vs. (56.84 ± 17.49) min, t = 5.40, 3.47, both P < 0.05). At 24 and 72 hours after surgery, platelet count and activated partial prothrombin time in the whole process thermal insulation group were significantly shorter than those in the simple thermal insulation group [(12.55 ± 0.88) s vs. (13.11 ± 0.97) s, (27.44 ± 2.43) s vs. (29.03 ± 2.14) s, (11.42 ± 0.73) s vs. (11.87 ± 0.74) s, (27.44 ± 1.96) s vs. (28.80 ± 2.22) s, t = 3.32, 3.81, all P < 0.05). The incidence of postoperative shivering and restlessness in the whole process thermal insulation group was significantly lower than that in the simple insulation Group (7 cases vs. 27 cases, 5 cases vs. 22 cases, χ2 = 17.782, 14.894, 3.33, 3.57, all P < 0.05). Conclusion:Perioperative whole course thermal insulation strategy can shorten extubation and recovery time, inhibit perioperative coagulation dysfunction, and decrease the incidence of perioperative restlessness, shivering and other complications caused by hypothermia. The effect of perioperative whole course thermal insulation is superior to that of simple thermal insulation.
5.Evaluation of the effectiveness and safety of TransPRK assisted by smart pulse technology for high myopia
Xiaohao DU ; Jia ZHANG ; Meng SU ; Wenjia CAO ; Shuang ZENG ; Qinmei WANG ; Shihao CHEN
Chinese Journal of Experimental Ophthalmology 2021;39(12):1053-1058
Objective:To evaluate the effectiveness and safety of transepithelial photorefractive keratectomy (TransPRK) assisted by smart pluse technology (SPT) for the correction of high myopia.Methods:An observational case series study was conducted.Sixty high myopic patients (107 eyes) with spherical equivalent (SE)≥-6.0 D who received TransPRK assisted by SPT from January to December 2016 in Eye Hospital of Wenzhou Medical University were enrolled.Uncorrected visual acuity (UCVA) and best corrected visual acuity (BCVA) of the patients were examined and recorded in logarithm of the minimum angle of resolution (LogMAR) units, and refraction was examined with a subjective refractometer.The healing of corneal epithelium and corneal haze was observed with a slit lamp.Intraocular pressure (IOP) was measured with the non-contact tonometer.Safety index (SI) and efficacy index (EI) were analyzed.The follow-up time was 12 months.This study protocol adhered to the Declaration of Helsinki and was approved by an Ethics Committee of Eye Hospital of Wenzhou Medical University (No.2019-197-k-177). Written informed consent was obtained from each patient prior to any medical examination.Results:The mean epithelial healing time was (3.77±1.02) days.There were statistically significant differences in UCVA and BCVA between before and after surgery ( Z=380.812, 267.313; both at P<0.001). And the 7-day, 6-month, and 12-month postoperative BCVA were better than preoperative BCVA, showing statistically significant differences (all at P<0.05). Mean SI was 1.10±0.12, and mean EI was 1.05±0.17 at 12 months after surgery.There was no significant difference between the attempted SE before surgery (-8.02±1.36)D and the achieved SE at 12 months after surgery (-8.04±1.51)D ( P=0.523). SE in the predictive range within ±0.50 D accounted for 79% (85/107) and that within ±1.0 D accounted for 92% (98/107). The IOP was slightly increased in 3 eyes at 7 days and 7 eyes at 1 month after surgery, respectively, which returned to normal after the use of ophthalmic solution for lowing IOP.The incidence of haze severer than grade 1 was less than 1% (1 eye), and haze gradually disappeared after application of drugs. Conclusions:TransPRK assisted by SPT for high myopia shows good safety, effectiveness and predictability.It is an ideal corneal surface surgery to correct high myopia.
6.Application of Chinese VF-11R questionnaire in presenting low vision cataract patients undergoing surgery
Haisi CHEN ; Jinhai HUANG ; Rongrong GAO ; Junming YE ; Min CHEN ; Qinmei WANG
Chinese Journal of Experimental Ophthalmology 2020;38(4):342-347
Objective:To assess the applying value of Chinese shorter version of the Visual Function Index questionnaire (VF-11R-CN) for presenting low-vision cataract pre-operation and post-operation by using minimal clinically important difference (MCID) determined by combination of distribution-based with anchor-based methods, and to compare the improvement rate of vision-related quality of life (VRQol).Methods:A cross-sectional study was performed in this study.Ninety-eight patients with presenting low vision cataract were enrolled at Eye Hospital of Wenzhou Medical University from May 2018 to June 2019.All the patients received a phacoemulsification with intraocular lens implantation.A questionnaire survey was carried out with VF-11R-CN Scale before surgery and 1 month-3 months after surgery, and a complement anchor item was added during the questionnaire after surgery.The applicability of the scale was assessed by floor or ceiling effects, and score difference of the VF-11R-CN over time and effective size was determined.Distribution-based MCID was calculated using 0.5 standard deviation (SD) of score difference and 1.96 standard error of measurement (SEM). Anchor-based MCID was calculated using the slope of the linear regression analysis.In responder analysis, sensitivity and specificity of MCID was reported.The differences of postoperative VRQol improvement rate based-on MCID were compared between male and female, single eye disease and multiple eye diseases, pre-operative and post-operative scores.This study protocol was approved by the Ethics Committee of Eye Hospital of Wenzhou Medical University, and followed the Declaration of Helsinki.Written informed consent was obtained from each patient prior to any medical examination.Results:A total of 85 patients completed the following up.The mean score difference was 399.51±234.92, and that of the presenting visual acuity (PVA) was 0.65±0.36.Both the minor floor and ceiling effects were 1.18% before surgery, and the ceiling effects were 22.35% after surgery.The score before surgery was significantly higher than that after surgery ( t=15.68, P<0.001). The effective size for the surgery was 1.63.The MCID was 122.23 and 123.10 according to 0.5 SD and 1.96 SEM.The linearity regression analysis showed that score difference reduced 106.17 if anchor item option increased 1.The average MCID estimate was 117.17.A total of 76 patients (89.41%) reported an improvement of VRQol.The sensitivity of MCID for the assessment of VRQol was 96.67% and specificity was 46.67%.No significant differences were found in VRQol improvement rate between gender, single cataract and multiple eye diseases or PVA (LogMAR 1.3 as cutoff value) ( P=0.73, 0.88, 0.27). Conclusions:VF-11R-CN scale is available for Chinese presenting low vision cataract patients undergoing surgery.The MCID value for the cataract surgery is 117.17 scores, with a high sensitivity and a relatively low specificity.
7.Comparison of visual quality following different methods of YAG laser posterior capsulotomy for posterior capsular opacification
Zhibo LIN ; Ding CHEN ; Xiaofen FENG ; Fang HUANG ; Qinmei WANG
Chinese Journal of Experimental Ophthalmology 2019;37(4):282-286
Objective To evaluate and compare the subjective and objective visual quality of YAG laser posterior capsulotomy.Methods A series of case observation study was designed.Twenty-eight patients (38 eyes)underwent Nd:YAG laser posterior capsulotomy in the Eye Hospital of Wenzhou Medical University were retrospectively collected from 2015 to 2016.Patients were divided into circular capsulotomy group (20 patients 23 eyes) and cruciate capsulotomy group (12 patients 15 eyes) based on the capsulotomy technique (round incision of posterior capsule or cross incision of posterior capsule).The uncorrected visual acuity (UCVA) and best corrected visual acuity (BCVA) were examined before and 2 weeks after operation,the intraocular pressure was also measured before operation,1 hour after operation and 2 weeks after operation.The Strehl ratio (SR),modulation transfer function (MTF) cut-off,objective scatter index (OSI),OQAS values (OVs) were analyzed by Two-channel visual quality analysis system OQAS Ⅱ at 1 h and 2 weeks after operation.The changes of intraocular scattering and visual quality at 1 h and 2 weeks after operation with different posterior capsulotomy methods were compared and analyzed.Results At 2 weeks after operation,the UCVA was 0.18±0.15 and 0.16±0.14,and the BCVA was 0.10±0.10 and 0.10±0.11,respectively in the circular capsulotomy group and cruciate capsulotomy group,which was higher than those before operation (all at P<0.05),but there was no significant difference in UCVA and BCVA between the two groups (all at P>0.05).There was no significant difference in intraocular pressure between the two groups at 1 hour and 2 weeks after operation (both at P>0.05).In the circular capsulotomy group,the incidence of black shadow drift was 39.1% and 30.4% respectively at 1 hour and 2 weeks after operation,which was higher than that in the cruciate capsulotomy group (6.7% and 6.7 %),with no significant differences between the two groups (P =0.065,0.177).No significant difference were found in the incidence of black shadow drift before eyes between the two groups (P>0.05),and there was no significant differences in the OQAS parameters OSI,MTF,SR,OV100%,OV20% and OV9% between the two groups (all at P>0.05).Conclusions After Nd:YAG laser capsulotomy,the incidence of black shadow drift in the cruciate capsulotomy group is lower than that in the circular capsulotomy group.There is no significant difference in the visual acuity,intraocular pressure,intraocular scattering and visual quality parameters between circular posterior capsulotomy and cross posterior capsulotomy.
8. Histological and biomechanical changes of rabbit ear cartilage induced by long pulse width 1064 nm Nd: YAG laser
Qinmei GU ; Jianwu CHEN ; Weihao ZHOU ; Xiangdong QI
Chinese Journal of Plastic Surgery 2019;35(12):1172-1177
Objective:
To investigate the histological and biomechanical changes of rabbit ear cartilage induced by long pulse width 1064 nm Nd: YAGlaser.
Methods:
Seven New Zealand rabbits weighing 2.0-2.5 kg, male, 4-6 months old were selected. For a self-control, the right ear was irradiated by laser and the left ear was the normal control group. Each rabbit ear was divided into 3 cm × 1 cm, three 2 cm × 1 cm and 1 cm× 1 cm experimental area. After the experimental area of the laser irradiation group was irradiated by long pulse width 1064 nm Nd: YAG laser, Three pieces of 2 cm × 1 cm cartilage in each ear of the experimental rabbits were immediately cut and stained with HE, Sirius red and Masson to observe the histological changes of chondrocytes. The 3 cm × 1 cm and 1 cm× 1 cm cartilage of each rabbit ear was cut for biomechanical examination, and the changes of biomechanical properties such as tension, fracture, elastic modulus and compression of rabbit ear cartilage were observed immediately after the operation.
Results:
Histological observation showed that the chondrocytes became small, the matrix was stained deeply, the refraction was obvious/evident and the collagen was relatively increased. After being irradiated by long pulse width 1064 nm Nd: YAG laser, the peak tensile stress, tensile elastic modulus, tensile fracture load, compressive stress peak, compressive elastic modulus and compressive failure load of rabbit ear cartilage in laser irradiation group were (5.22 ±0.80) MPa, (42.40 ±9.78) MPa, (22.86 ±4.85) N, (16.04 ±5.57) MPa, (28.71 ±13.97) MPa, (1 211.63 ±427.86) N. All of them were smaller than those of the control group[(6.07±0.64) MPa, (48.44±6.30) MPa, (26.94±4.19) N, (25.12±9.10) MPa, (45.30±19.24) MPa, (1 962.83±896.71) N], and the difference was statistically significant (
9.Changes of neuroprotective factors and immune-related factors in aqueous humor of patients with primary open angle glaucoma
Yong ZHANG ; Qinmei YANG ; Feng GUO ; Xia CHEN ; Lin XIE
Chinese Journal of Experimental Ophthalmology 2018;36(4):284-288
Objective To measure cytokine concentrations in aqueous humor of patients with primary open angle glaucoma (POAG) and cataract.Methods A cross-sectional study was performed under the informed consent of each subject from June to December in 2016 in Daping Hospital.A total of 24 cases of POAG patients served as the experimental group,while 22 cases of age related cataract patients served as control group.Concentrations of basic fibroblast growth factor (bFGF),monocyte chemoattractant protein-1 (MCP-1),brain derived neurotrophic factor (BDNF),soluble intercellular adhesion molecule-1 (sICAM-1),soluble neural ceil adhesion molecule (sNCAM),and soluble vascular cell adhesion molecule-1 (sVCAM-1) with Luminex 200 were detected between the two groups.Then the comparison and the correlation analysis were performed between the two groups.Results Concentrations of MCP-1,sVCAM-1 and sNCAM in the experimental group were higher than those in the control group,with significant differences between them (P =O.017,0.007,0.001).The concentration of bFGF-2 in the experimental group was significantly lower than that in the control group (P =0.027).There was no significant difference in the expression levels of BDNF and sICAM-1 between the two groups (P>0.05).The expression levels of MCP-1,sICAM-1,sNCAM and sVCAM-1 were significantly associated with each other (all at P < 0.05).Conclusions The expression levels of MCP-1,sVCAM-1 and sNCAM are elevated in POAG patients.POAG may be a neurodegenerative disease associated with neuroinflammation.
10.Pathogenic Significance and Treatment of Qi Deficiency and Blood Stasis in Diabetic Cystopathy
Chinese Journal of Information on Traditional Chinese Medicine 2017;24(4):111-112
The etiology and pathogen of diabetic cystopathy is mainly due to qi deficiency of spleen and kidney, which leads to bladder and Sanjiao hypo-function of vital energy, losing opening and closing. In addition to blood stasis injury essence, it blocks the urinary tract. The main pathogen is qi deficiency and blood stasis. The qi deficiency of spleen and kidney is the fundamental aspect, while the blood stasis is the surface aspect. Excess resulted from deficiency, intermingled deficiency and excess, belong to asthenia in origin and asthenia in superficiality. Clinical application of method of invigorating qi, removing blood stasis and eliminating stagnation for diabetic cystopathy has a good clinical efficacy.


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