1.Chufeng Yisuntang Ameliorates PM2.5-induced Dry Eye via ROS/p38 MAPK Signaling Pathway
Yuan ZHONG ; Pan ZHAO ; Shi TAN ; Yu TANG ; Dongdong LI ; Lihao CHEN ; Jun PENG ; Qinghua PENG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(7):191-200
ObjectiveTo establish a mouse model of particulate matter 2.5 (PM2.5)-induced dry eye and investigate whether Chufeng Yisuntang can ameliorate the PM2.5-induced ocular surface damage by regulating the reactive oxygen species (ROS)/p38 mitogen-activated protein kinase (p38 MAPK) signaling pathway. MethodsSixty 8-week-old male C57BL/6J mice were used. Ten were randomly selected as the control group. The remaining 50 mice received topical instillation of 1 drop (0.1 mL) of 5 g·L-1 PM2.5 suspension in both eyes, four times daily. Successfully modeled mice were randomized into four groups (n=10): Model, p38 MAPK inhibitor, Chufeng Yisuntang, and combination (Chufeng Yisuntang at 7.3 g·kg-1 + p38 MAPK inhibitor SB203580 at 5 mg·kg-1). Chufeng Yisuntang was administered via gavage, and the inhibitor group via intraperitoneal injection. The control and model groups received equal volumes of distilled water by gavage. All treatments lasted for 4 weeks. General conditions were dynamically observed. Tear secretion, tear film break-up time, and corneal fluorescein staining were assessed. After intervention for 4 weeks, hematoxylin and eosin (HE) staining was used to examine the histopathological changes. Enzyme-linked immunosorbent assay (ELISA) was adopted to measure serum levels of ROS, malondialdehyde (MDA), superoxide dismutase (SOD) 1, and SOD2. Western blot and Real-time PCR were employed to determine the protein and gene levels, respectively, of p38 MAPK, B-cell lymphoma-2 (Bcl-2), Bcl-2-associated X protein (Bax), and cysteinyl aspartate-specific proteinase-3 (Caspase-3) in the corneal tissue. ResultsCompared with the control group, the model group exhibited reduced tear secretion volume and tear film breakup time, along with increased corneal fluorescein staining scores (P<0.01). Compared with the model group, the Chufeng Yisuntang group, p38 MAPK inhibitor group, and combination group demonstrated increased tear secretion volume and tear film breakup time, along with decreased corneal fluorescein staining scores (P<0.01). HE staining revealed that compared with the control group, the model group exhibited marked increases in corneal epithelial cell layers and epithelial thickness, along with reduced meibomian gland acini and intensely stained, densely packed nuclei around the acini. Compared with the model group, the Chufeng Yisuntang group, p38 MAPK inhibitor group, and combination group showed intact corneal structure, improved cell morphology, and reduced damage severity. ELISA revealed elevated ROS and MDA levels (P<0.01) and decreased SOD1 and SOD2 levels (P<0.01) in the model group compared with the control group. Compared with the model group, Chufeng Yisuntang, p38 MAPK inhibitor, and the combination lowered ROS and MDA levels (P<0.01), while raising SOD1 and SOD2 levels (P<0.05, P<0.01). Western blot revealed that compared with the control group, the model group exhibited increased protein levels of p38 MAPK, Bax, and Caspase-3 (P<0.01) and reduced protein level of Bcl-2 (P<0.01). Compared with the model group, Chufeng Yisuntang, p38 MAPK inhibitor, and the combination down-regulated the protein levels of p38 MAPK, Bax, and Caspase-3 (P<0.01), while up-regulating the protein level of Bcl-2 (P<0.01). Compared with the Chufeng Yisuntang group, the combination group exhibited decreased protein levels of p38 MAPK, Bax, and Caspase-3 (P<0.01) and increased protein level of Bcl-2 (P<0.01). Real-time PCR revealed that compared with the control group, the model group exhibited upregulated mRNA levels of p38 MAPK, Bax, and Caspase-3 (P<0.01), and downregulated mRNA level of Bcl-2 (P<0.01). Compared with the model group, Chufeng Yisuntang, p38 MAPK inhibitor, and the combination down-regulated the mRNA levels of p38 MAPK, Bax, and Caspase-3 (P<0.01), while up-regulating the mRNA level of Bcl-2 (P<0.05, P<0.01). Compared with the Chufeng Yisuntang group, the combination group exhibited decreased mRNA levels of p38 MAPK, Bax, and Caspase-3 expression (P<0.05, P<0.01) and increased mRNA level of Bcl-2 (P<0.01). ConclusionChufeng Yisuntang may partially protect against PM2.5-induced corneal injury by inhibiting the ROS/p38 MAPK pathway, enhancing antioxidant defense, and reducing epithelial apoptosis.
2.Clinical Efficacy of Shenqi Yangxin Decoction in Treatment of Patients with Ischemic Cardiomyopathy and Its Effect on Serum H2S and Ca2+
Zhuojun ZHANG ; Lijuan SHEN ; Hongyi LAN ; Jiajing ZHAO ; Liyang SHEN ; Tiantian HUANG ; Shuai ZHANG ; Xiaodong TAN ; Shu LU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(11):210-217
ObjectiveTo evaluate the clinical efficacy of Shenqi Yangxin decoction in the treatment of ischemic cardiomyopathy (ICM) with Qi and Yin deficiency and blood stasis syndrome and its effect on serum hydrogen sulfide (H2S) and calcium ion (Ca2+). MethodsA total of 64 ICM patients with Qi and Yin deficiency and blood stasis syndrome who met the inclusion criteria were randomly divided into a control group (n=32) and a treatment group (n=32). All patients received conventional Western medicine treatment. The treatment group was additionally given Shenqi Yangxin decoction. The TCM syndrome score, Minnesota Living with Heart Failure Questionnaire (MLHFQ) score, left ventricular ejection fraction (LVEF), N-terminal pro-B-type natriuretic peptide (NT-proBNP), 6-minute walk test (6MWT), New York Heart Association (NYHA) cardiac function classification, and serum H2S and Ca2+ levels were compared between the two groups pre- and post-treatment. ResultsTwo cases dropped out from each group during the study. Finally, 30 patients in each group were included in the analysis. There were no significant differences in age, gender, course of coronary heart disease, underlying diseases, and laboratory tests between the two groups. Compared with baseline, the TCM syndrome score, MLHFQ score, and NT-proBNP in both treatment group and control group decreased significantly (P<0.01), LVEF, 6MWT, and H2S increased significantly (P<0.01), and serum Ca2+ increased (P<0.05). Compared with the control group after treatment, the MLHFQ score and NT-proBNP in the treatment group decreased (P<0.05), the TCM syndrome score decreased significantly (P<0.01), LVEF, 6MWT, and serum Ca2+ increased (P<0.05), and H2S increased significantly (P<0.01). The improvement degree of the NYHA cardiac function classification in the treatment group was higher than that in the control group, but there was no significant difference. ConclusionShenqi Yangxin decoction is effective in treating ICM patients with Qi and Yin deficiency and blood stasis, which could significantly improve cardiac function and quality of life, and its therapeutic effect may be related to the regulation of serum H2S and Ca2+ levels.
3.Effect Difference and Mechanisms of Zishenwan Against Chronic Prostatitis Before and After Salt-processing of Anemarrhenae Rhizoma and Phellodendri Chinensis Cortex by Integrating Network Pharmacology and Metabolomics
Shangling ZHAO ; Xiao MENG ; Sirui LI ; Rui TAN ; Changjiang HU ; Lingying YU ; Zhimin CHEN
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(13):177-187
ObjectiveThis paper aims to systematically reveal the effect difference and mechanisms of Zishenwan against chronic prostatitis (CP) before and after salt-processing of Anemarrhenae rhizoma and Phellodendri chinensis cortex based on an integrated strategy of ultra-high performance liquid chromatography-quadrupole-orbitrap mass spectrometry (UPLC-Q-Orbitrap-MS/MS), network pharmacology, and serum metabolomics. MethodsZishenwan samples before and after salt-processing of Anemarrhenae rhizoma and Phellodendri chinensis cortex were extracted by alcohol-water dual extraction. The chemical components of each sample were detected by UPLC-Q-Orbitrap-MS/MS, and differential components were screened by multivariate statistical analysis. Network pharmacology analysis was performed based on the identified chemical components of Zishenwan to construct a protein-protein interaction (PPI) network of "component, target, and pathway", and the core components, targets, and pathways of Zishenwan against CP were screened. Forty-two male Sprague-Dawley (SD) rats were randomly divided into a blank group, a model group, a Qianliekang group (1.54 g·kg-1), low- and high-dose raw Zishenwan groups (1.8, 5.4 g·kg-1), and low- and high-dose salt-processed Zishenwan groups (1.8, 5.4 g·kg-1). The CP rat model was established by intraprostatic injection of carrageenan. After one week of recovery, the rats were administered the corresponding drugs for 21 days, while those in the blank group and model group received the same volume of normal saline. After the experiment, serum and tissue samples were collected to evaluate pharmacodynamic indicators including organ indices, histopathology, and inflammatory factors in serum. Subsequently, untargeted serum metabolomics technology was used to analyze metabolite changes and perform pathway enrichment analysis. The network pharmacology was used to construct a network of "differential metabolite, reaction, enzyme, and gene". ResultsA total of 76 components were identified in raw and salt-processed Zishenwan, and 34 differential components were screened by multivariate statistical analysis. Among them, the contents of 14 components, including berberine, berberrubine, and phellodendrine, increased after salt-processing, while the contents of 20 components, such as neomangiferin, decreased. The 28 active components and 185 potential targets were screened out by network pharmacology. The core components included berberine, phellodendrine, magnoflorine, and jatrorrhizine, and the core targets included signal transducer and activator of transcription 3 (STAT3), protein kinase B1 (Akt1), and transcription factor AP-1 (JUN). These targets were significantly enriched in pro-inflammatory signaling pathways such as phosphatidylinositol 3-kinase/protein kinase B (PI3K/Akt) and mitogen-activated protein kinase (MAPK). Compared with the model group, all Zishenwan administration groups showed decreased prostate index, reduced levels of interleukin (IL)-1β, IL-18, and B-cell lymphoma-2 (Bcl-2) in serum (P<0.05, P<0.01), as well as varying degrees of alleviation in histopathological damage. At the same dose, compared with the raw Zishenwan groups, the salt-processed Zishenwan groups showed lower prostate index, pathological scores, and IL-1β, IL-18, and Bcl-2 levels in serum, but the differences were not statistically significant. Metabolomics reveals that 38 differential metabolites were reversed after salt-processed Zishenwan administration. Both raw and salt-processed Zishenwan regulated pathways such as β-alanine metabolism and tryptophan metabolism. In addition to the common regulated pathways, the salt-processed group specifically regulated pantothenate and coenzyme A biosynthesis, pyrimidine metabolism, and arginine and proline metabolism. The intersecting pathways between network pharmacology and metabolomics were tryptophan metabolism and arginine and proline metabolism, with overlapping targets including monoamine oxidase A (MAOA) and arginase 1 (ARG1). ConclusionThe increased contents of components such as berberine and phellodendrine in salt-processed Zishenwan may enhance its therapeutic effect on CP by inhibiting the PI3K/Akt and MAPK signaling pathways, along with multi-target regulation of tryptophan, arginine, and pantothenate metabolism pathways to comprehensively regulate inflammatory and immune responses.
4.A Comparative Study of Artificial Intelligence-based Classification Versus Manual Classification of Medical Adverse Events: Taking the DeepSeek Large Language Model As an Example
Rui WANG ; Xutong TAN ; Congpu ZHAO ; Shuchang WANG ; Zheng CHEN ; Xiaojun MA ; Zhiling CAI
Medical Journal of Peking Union Medical College Hospital 2026;17(3):828-833
To analyze the application value of artificial intelligence (AI)-based classification in the categorization of medical adverse events. Medical adverse events reported to the Adverse Event Reporting System of Peking Union Medical College Hospital from September 1, 2023, to August 31, 2024, were retrospectively collected as the study subjects. After de-identification of adverse events meeting the inclusion criteria, conventional manual classification and AI-based classification using a large language model (DeepSeek-R1 Full-Context Internet Edition) were performed. The time required for classification using both methods was recorded, and the consistency and discrepancies between the two methods were compared. Using manual classification as the gold standard, the accuracy of AI-based classification was comprehensively evaluated. A total of 273 medical adverse events were analyzed. Manual classification took 38 838 seconds in total, with an average of 14.22 seconds per event. AI-based classification took 600 seconds in total, with an average of 2.19 seconds per event. The two methods showed consistent classification in 202 events and inconsistent classification in 71 events, yielding an overall agreement rate of 73.99% and a Kappa coefficient of 0.646 (95% CI: 0.575-0.717), with a standard error of 0.0362. Using manual classification as the gold standard, AI-based classification achieved accuracy ranging from 80% to 100%, precision from 30% to 100%, recall from 40% to 100%, F1 scores from 0.46 to 0.79, and specificity from 46% to 98%. Notably, AI-based classification demonstrated balanced and overall excellent performance in the categorization of device-related and drug-related adverse events. The DeepSeek large language model can assist in improving the efficiency of medical adverse event classification, showing promising application potential, particularly in the categorization of device-related and drug-related adverse events.
5.Mechanism of Wenyang jieyu granules regulating NLRP3/ASC/Caspase-1 pathway on antidepressant effect in rats
Shuang MENG ; Jie ZHAO ; Xinxin WANG ; Dandan TAN ; Xiaorong ZHOU ; Huimin SUN ; Xiaojuan MA ; Zhenyu FENG
China Pharmacy 2026;37(11):1440-1446
OBJECTIVE To explore the antidepressant mechanism of Wenyang jieyu granules (WYJYG) via the NOD-like receptor thermal protein domain associated protein 3 (NLRP3)/apoptosis-associated speck-like protein containing a CARD (ASC)/Caspase-1 pathway. METHODS A rat model of depression was established by chronic unpredictable mild stress combined with single-housing for 42 consecutive days.The experiment set up blank group, model group, MCC950 (NLRP3 inflammasome inhibitor) group (10 mg/kg), fluoxetine group (positive control,2.08 mg/kg),low-dose WYJYG(3.78 g/kg) and high-dose WYJYG group (7.56 g/kg),with 10 rats in each group. From the 22nd day of the experiment, rats in the fluoxetine group, low-dose and high-dose WYJYG groups were intragastrically administered with the corresponding drugs and intraperitoneally injected with an equal volume of normal saline. Rats in the MCC950 group were intraperitoneally injected with MCC950 at the corresponding concentration and intragastrically administered with an equal volume of distilled water. Rats in the blank group and model group were given an equal volume of distilled water by gavage and an equal volume of normal saline by intraperitoneal injection. All interventions were performed once a day for 21 consecutive days. Behavioral tests were conducted once a week. After the last administration, the contents of ASC, ionized calcium binding adaptor molecule 1 (Iba1), interleukin-1β (IL-1β), and IL-18 in hippocampal tissues were detected. The protein expressions of NLRP3, cluster of differentiation 68 (CD68), Caspase-1, B-cell lymphoma-2 (Bcl-2), and Bcl-2-associated X protein were determined, and neuronal apoptosis was observed. RESULTS After the last administration, compared with the model group, the open-field activity time was significantly prolonged ( P <0.05), and the latency to feed in a novel environment was significantly shortened ( P <0.05) in rats of the high-dose WYJYG group. In hippocampal tissue, the contents of ASC, Iba1, IL-1β, and IL-18, as well as the protein expression levels of NLRP3, Caspase-1, and CD68, and the positive rate of neuronal apoptosis were all significantly decreased/downregulated ( P <0.05). Bcl-2 protein expression was significantly upregulated ( P <0.05), and the density of neuronal apoptosis-positive cells was significantly reduced ( P <0.05). CONCLUSIONS WYJYG play on antidepressant role by inhibiting the NLRP3/ASC/Caspase-1 pathway, reducing microglia-mediated neuroinflammation, and inhibiting hippocampal neurons apoptosis.
6.Effects of Electroacupuncture at "Fengchi" (GB 20), "Waiguan" (TE 5), and "Yanglingquan" (GB 34) on Nociceptive Sensitization and PKC/TRPV1 Pathway in the Trigeminal Ganglion of Chronic Migraine Model Rats
Yixiang ZENG ; Runze TU ; Shucong ZHAO ; Yang YANG ; Haojia WEN ; Zhuozhong HE ; Shengli ZHOU ; Lei TAN ; Ke HE ; Lei FU
Journal of Traditional Chinese Medicine 2025;66(3):283-289
ObjectiveTo explore the possible mechanisms of electroacupuncture at Fengchi (GB 20), Waiguan (TE 5), and Yanglingquan (GB 34) in treating chronic migraine from the perspective of nociceptive sensitization. MethodsForty SPF-grade SD rats were randomly divided into blank group, model group, electroacupuncture group, electroacupuncture + agonist group, and inhibitor group, with 8 rats in each group. Except for the blank group, rats were injected intraperitoneally with nitroglycerin to establish a chronic migraine rat model. After successful modeling, the electroacupuncture group received electroacupuncture at bilateral "Fengchi" (GB 20), "Waiguan" (TE 5), and "Yanglingquan" (GB 34) for 30 minutes each session. The electroacupuncture + agonist group received the same electroacupuncture treatment and additional injection of protein kinase C (PKC) agonist Phorbol 12-myristate 13-acetate (1.0 ng/μl, 25 μl) via the infraorbital foramen. The inhibitor group received PKC inhibitor Chelerythrine Chloride (1.0 ng/μl, 10 μl) via the infraorbital foramen. The blank group, model group, and inhibitor group underwent restraint for 30 minutes without other interventions. All groups were continuously intervened for 5 days. After the intervention, the nociceptive thresholds (mechanical and thermal pain) of the periorbital area and hind paw were measured. The expression levels of transient receptor potential vanillic acid subtype 1 (TRPV1), phosphorylated TRPV1 (p-TRPV1), PKC proteins, Trpv1, Pkc mRNA, and the average fluorescence intensity of transient receptor potential vanillic acid subtype 1 (TRPV1) and PKC in the trigeminal ganglion were detected using Western Blot, real-time fluorescence quantitative PCR, and immunofluorescence methods. ResultsCompared with the blank group, the mechanical and thermal pain thresholds of the periorbital area and hind paw were reduced in the model group, and the protein levels of TRPV1, PKC, p-TRPV1, as well as the mRNA expression of Trpv1 and Pkc, and the average fluorescence intensity of TRPV1 and PKC in the trigeminal ganglion significantly increased (P<0.05 or P<0.01). Compared with the model group, the electroacupuncture group exhibited increased mechanical and thermal pain thresholds in the periorbital and hind paw areas, and decreased protein levels of TRPV1, PKC, p-TRPV1, mRNA expression of Trpv1 and Pkc, and average fluorescence intensity of TRPV1. In the electroacupuncture + agonist group, the average fluorescence intensity of TRPV1 in the trigeminal ganglion decreased. The inhibitor group exhibited increased mechanical pain thresholds in the periorbital area and thermal pain thresholds in the hind paw, along with decreased protein levels of TRPV1, PKC, p-TRPV1, and the average fluorescence intensity of TRPV1 and PKC (P<0.05 or P<0.01). Compared with the electroacupuncture group, the electroacupuncture + agonist group showed an increase in the protein levels of TRPV1, PKC, p-TRPV1, and the mRNA expression of Trpv1 (P<0.05 or P<0.01). ConclusionElectroacupuncture at the "Fengchi" (GB 20), "Waiguan" (TE 5), and "Yanglingquan" (GB 34) acupoints can increase the mechanical and thermal pain thresholds in chronic migraine rats and alleviate nociceptive sensitization. The mechanism may be related to the inhibition of PKC/TRPV1 pathway.
7.Principles, technical specifications, and clinical application of lung watershed topography map 2.0: A thoracic surgery expert consensus (2024 version)
Wenzhao ZHONG ; Fan YANG ; Jian HU ; Fengwei TAN ; Xuening YANG ; Qiang PU ; Wei JIANG ; Deping ZHAO ; Hecheng LI ; Xiaolong YAN ; Lijie TAN ; Junqiang FAN ; Guibin QIAO ; Qiang NIE ; Mingqiang KANG ; Weibing WU ; Hao ZHANG ; Zhigang LI ; Zihao CHEN ; Shugeng GAO ; Yilong WU
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2025;32(02):141-152
With the widespread adoption of low-dose CT screening and the extensive application of high-resolution CT, the detection rate of sub-centimeter lung nodules has significantly increased. How to scientifically manage these nodules while avoiding overtreatment and diagnostic delays has become an important clinical issue. Among them, lung nodules with a consolidation tumor ratio less than 0.25, dominated by ground-glass shadows, are particularly worthy of attention. The therapeutic challenge for this group is how to achieve precise and complete resection of nodules during surgery while maximizing the preservation of the patient's lung function. The "watershed topography map" is a new technology based on big data and artificial intelligence algorithms. This method uses Dicom data from conventional dose CT scans, combined with microscopic (22-24 levels) capillary network anatomical watershed features, to generate high-precision simulated natural segmentation planes of lung sub-segments through specific textures and forms. This technology forms fluorescent watershed boundaries on the lung surface, which highly fit the actual lung anatomical structure. By analyzing the adjacent relationship between the nodule and the watershed boundary, real-time, visually accurate positioning of the nodule can be achieved. This innovative technology provides a new solution for the intraoperative positioning and resection of lung nodules. This consensus was led by four major domestic societies, jointly with expert teams in related fields, oriented to clinical practical needs, referring to domestic and foreign guidelines and consensus, and finally formed after multiple rounds of consultation, discussion, and voting. The main content covers the theoretical basis of the "watershed topography map" technology, indications, operation procedures, surgical planning details, and postoperative evaluation standards, aiming to provide scientific guidance and exploration directions for clinical peers who are currently or plan to carry out lung nodule resection using the fluorescent microscope watershed analysis method.
8.Current Status and Prospects of Research on the Potential Neurobiological Mechanisms of Acupuncture in the Treatment of Tobacco Dependence
Shumin CHEN ; Jin CHANG ; Chaoren TAN ; Hao ZHU ; Jinsheng YANG ; Zhao LIU ; Yingying WANG
Journal of Traditional Chinese Medicine 2025;66(4):421-426
This paper comprehensively discusses on the potential neurobiological mechanisms of acupuncture in the treatment of tobacco dependence, focusing on three important aspects, including acupuncture's regulation of tobacco dependence behavior, effects of acupuncture on withdrawal syndrome, and the role of acupuncture in preventing relapse. It is found that acupuncture can inhibit drug-seeking behavior by regulating the reward pathway and related neurons, such as dopamine, thus modulating tobacco dependence behavior. It also alleviates withdrawal symptoms by improving the oral environment of smokers and reducing negative emotions after quitting. Furthermore, acupuncture can prevent relapse by decreasing brain network activity related to smoking cravings and improving cognitive brain functions like addiction memory. Currently, research on the specific neurobiological mechanism of acupuncture in treating tobacco dependence and the involved neural circuits is limited. Future research directions are proposed, including the evaluation of clinical effects, exploration of specific therapeutic mechanisms, investigation of brain pathology, and strengthening the exploration of brain functions. Additionally, combining modern technologies to clarify the neural circuits involved in acupuncture intervention will provide a basis for acupuncture treatment of tobacco addiction.
9.Evaluation on repeatability and accuracy of iCare IC100 tonometer in measuring intraocular pressure
Yue PENG ; Ping ZHAO ; Juan TAN ; Rui LIU ; Yiping ZHENG ; Jiangping HUANG
International Eye Science 2025;25(3):494-498
AIM: To evaluate the repeatability and accuracy of iCare IC100 tonometer in measuring intraocular pressure(IOP)by comparing the correlation and difference with Goldmann applanation tonometry(GAT)and non-contact tonometer(NCT), and to compare the correlation of the three types of IOP measurement with the central corneal thickness(CCT).METHODS: Prospective study. A total of 90 outpatients(90 eyes)in Liaoning Aier Eye Hospital from March 2019 to May 2019 were randomly selected as study subjects. All patients were measured IOP using iCare IC100, NCT, and GAT. The interclass correlation coefficient(ICC)was used to evaluate the repeatability of IOP measured 3 times consecutively using an intraocular tonometer. The correlation and consistency of iCare IC100, GAT and NCT were compared by one-way ANOVA, Pearson linear correlation analysis and Bland-Altman analysis. The linear regression analysis was used to analyze the correlation of the three tonometers with CCT.RESULTS: The mean IOP measured with iCare IC100, GAT and NCT was 19.74±6.90, 19.88±7.07 and 18.47±6.31 mmHg, respectively(F=1.180, P=0.309). The measurements of iCare IC100 with GAT, iCare IC100 with NCT and GAT with NCT were all positively correlated(r=0.930, 0.946, 0.918, all P<0.05), the Bland-Altman analysis showed that the mean differences between iCare IC100 and GAT, iCare IC100 and NCT, GAT and NCT were -0.142±2.61, 1.27±2.24, and 1.41±2.81 mmHg, respectively, with 97%(87/90), 96%(86/90), and 97%(87/90)IOP differences distributed within their 95% confidence intervals. The IOP measured with iCare IC100 and CCT, GAT and CCT and NCT and CCT were all positively correlated(r=0.426, 0.353, 0.451, all P<0.01). The linear regression equations between iCare IC100, GAT and NCT measurement and CCT were iCare IC100 IOP=-19.62+0.074×CCT; GAT IOP=-13.54+0.063×CCT; NCT IOP=-19.65+0.072×CCT; that is, for every 10 μm increase in CCT, iCare IC100 measurement increased by 0.74 mmHg, GAT measurement increased by 0.63 mmHg, and NCT measurement increased by 0.72 mmHg.CONCLUSION: The iCare IC100 tonometer has good repeatability and accuracy in measuring IOP, and the CCT has a greater impact on the measurement of iCare IC100 than the GAT and NCT.
10.Evaluation on repeatability and accuracy of iCare IC100 tonometer in measuring intraocular pressure
Yue PENG ; Ping ZHAO ; Juan TAN ; Rui LIU ; Yiping ZHENG ; Jiangping HUANG
International Eye Science 2025;25(3):494-498
AIM: To evaluate the repeatability and accuracy of iCare IC100 tonometer in measuring intraocular pressure(IOP)by comparing the correlation and difference with Goldmann applanation tonometry(GAT)and non-contact tonometer(NCT), and to compare the correlation of the three types of IOP measurement with the central corneal thickness(CCT).METHODS: Prospective study. A total of 90 outpatients(90 eyes)in Liaoning Aier Eye Hospital from March 2019 to May 2019 were randomly selected as study subjects. All patients were measured IOP using iCare IC100, NCT, and GAT. The interclass correlation coefficient(ICC)was used to evaluate the repeatability of IOP measured 3 times consecutively using an intraocular tonometer. The correlation and consistency of iCare IC100, GAT and NCT were compared by one-way ANOVA, Pearson linear correlation analysis and Bland-Altman analysis. The linear regression analysis was used to analyze the correlation of the three tonometers with CCT.RESULTS: The mean IOP measured with iCare IC100, GAT and NCT was 19.74±6.90, 19.88±7.07 and 18.47±6.31 mmHg, respectively(F=1.180, P=0.309). The measurements of iCare IC100 with GAT, iCare IC100 with NCT and GAT with NCT were all positively correlated(r=0.930, 0.946, 0.918, all P<0.05), the Bland-Altman analysis showed that the mean differences between iCare IC100 and GAT, iCare IC100 and NCT, GAT and NCT were -0.142±2.61, 1.27±2.24, and 1.41±2.81 mmHg, respectively, with 97%(87/90), 96%(86/90), and 97%(87/90)IOP differences distributed within their 95% confidence intervals. The IOP measured with iCare IC100 and CCT, GAT and CCT and NCT and CCT were all positively correlated(r=0.426, 0.353, 0.451, all P<0.01). The linear regression equations between iCare IC100, GAT and NCT measurement and CCT were iCare IC100 IOP=-19.62+0.074×CCT; GAT IOP=-13.54+0.063×CCT; NCT IOP=-19.65+0.072×CCT; that is, for every 10 μm increase in CCT, iCare IC100 measurement increased by 0.74 mmHg, GAT measurement increased by 0.63 mmHg, and NCT measurement increased by 0.72 mmHg.CONCLUSION: The iCare IC100 tonometer has good repeatability and accuracy in measuring IOP, and the CCT has a greater impact on the measurement of iCare IC100 than the GAT and NCT.

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