1.METTL3 mediates m6A modification in ocular diseases
Canyu WANG ; Ruiyu YANG ; Xuan LIAO
International Eye Science 2025;25(4):615-619
N6-methyladenosine(m6A)is recognized as the most prevalent mRNA modification in mammals, intricately involved in a multitude of processes pertaining to mRNA metabolism, encompassing RNA transcription, translation, and degradation. It plays a pivotal role in various physiological functions. Under the coordinated actions of methyltransferases, demethylases, and m6A-binding proteins, m6A modifications undergo reversible changes to fulfill their diverse molecular functions.Methyltransferase-like 3(METTL3), as the core catalytic subunit of methyltransferases and the most extensively studied methyltransferase, holds a central position in m6A modification. In recent years, it has been found that METTL3-mediated m6A modification is involved in the occurrence and development of various ocular diseases, such as ocular surface diseases, glaucoma, cataract, retinal diseases, and ocular tumors, by affecting the expression of inflammatory factors and thus regulating the inflammatory response, and by regulating various pathways that affect the proliferation of cells and oxidative stress. In this paper, we comprehensively review the mechanisms under the role of METTL3 in ocular diseases, offering novel insights and perspectives for the prevention and management of these conditions.
2.Relationship of insulin resistance and related indicators with early neurological deterioration in branch atheromatous disease
Jiaqi XIU ; Canyu YANG ; Yang WANG ; Bing LI ; Zhi XI ; Si CHEN ; Xiaopeng YANG
Chinese Journal of Geriatric Heart Brain and Vessel Diseases 2025;27(11):1526-1530
Objective To investigate the association of insulin resistance(IR)and its related indices,including triacylglycerol-glucose(TyG)index and metabolic score of insulin resistance(Mets-IR),with the occurrence of early neurological deterioration(END)in patients with branch atheromatous disease(BAD),and develop a risk prediction model based on these factors.Methods A total of 189 BAD patients were consecutively recruited from the Department of Neurology of the Second Affiliated Hospital of Zhengzhou University between March 2020 and August 2024.Based on the occurrence of END within 7 d after admission,the participants were stratified into END(75 cases)and non-END(114 cases)groups.Demographic characteristics,clinical parameters,TyG index and Mets-IR values were systematically collected and analyzed.Multivariate logistic regression analysis was performed to identify independent risk factors for END in BAD-related stroke.Receiver operating characteristic curve(ROC)analysis was subsequently conducted to evaluate the predictive performance of significant variables,followed by construction of a nomogram prediction model.Results The END group exhibited significantly elevated fasting blood glucose[6.47(5.74,7.86)mmol/L vs 5.83(5.14,6.70)mmol/L]and triacylglycerol[1.65(1.21,2.04)mmol/L vs 1.27(0.99,1.57)mmol/L]levels,higher body mass index[25.02(23.88,26.67)kg/m2 vs 23.71(22.66,25.27)kg/m2]and TyG index(9.03±0.41 vs 8.71±0.45),and increased Mets-IR(39.98±4.23 vs 36.85±4.38)and NIHSS score[5.00(3.00,7.00)vs 3.00(2.00,5.00)]at admission when compared with the non-END group(P<0.05).Multivariate logistic regression analysis showed that high TyG index(OR=3.751,95%CI:1.592-9.202,P<0.01),Mets-IR(OR=1.146,95%CI:1.049-1.252,P<0.01),and NIHSS score at admission(OR=1.279,95%CI:1.128-1.451,P<0.01)were risk factors for the occurrence of END in BAD patients(P<0.05).ROC curve indicated that the AUC value of TyG index,Mets-IR,and NIHSS score at admission in predicting END occurrence was 0.698(95%CI:0.623-0.774,P<0.01),0.698(95%CI:0.620-0.775,P<0.01),and 0.666(95%CI:0.586-0.745,P<0.01),respectively.The nomogram prediction model based on these factors demonstrated significant clinical benefits by decision curve analysis and goodness of fit in internal calibration analysis.Conclusion IR shows significant association with END in BAD patients.The IR related indices,TyG index and Mets-IR,have certain predictive efficiency for occurrence and progression of END.
3.Study on the mechanism of oxidative stress in ocular diseases and therapeutic strategies
Canyu WANG ; Ruiyu YANG ; Yi SHAO ; Xuan LIAO
Recent Advances in Ophthalmology 2025;45(3):247-252
An imbalance between oxidative and antioxidant defense mechanisms in the body triggers oxidative stress,which causes a series of damages to the body,tissues and cells.The eye is particularly susceptible to oxidative stress due to its prolonged exposure to light and its anatomical characteristics of high metabolism and oxygen consumption.In addi-tion,inflammation,aging,genetic and environmental factors can promote the production of reactive oxygen species and weaken antioxidant defense mechanisms,which are all risk factors for oxidative stress that can lead to a variety of ocular diseases.The aim of this paper is to review the mechanisms of oxidative stress in ocular diseases such as ocular surface diseases,glaucoma,cataract,and retinopathy.At the same time,the potential therapeutic approaches to these diseases by regulating oxidative stress are discussed,so as to provide new ideas and directions for the diagnosis and treatment of ocular diseases.
4.Efficacy evaluation of defocus incorporated multiple segments lenses on delaying the progression of myopia: a meta-analysis
Zhiming GU ; Xuan LIAO ; Xiaoling XIANG ; Ruiyu YANG ; Canyu WANG
Chinese Journal of Experimental Ophthalmology 2025;43(6):557-562
Objective:To evaluate the efficacy of defocus incorporated multiple segments (DIMS) on spherical equivalent (SE) and axial length (AL) in myopic children.Methods:Clinical studies on the progress of DIMS lens intervention in myopia reported in CNKI, Wanfang Data, VIP, China Biomedical Literature Database, PubMed, Embase, Cochrane Library, and Web of Science from the establishment of the database to June 2023 were searched.The experimental group and control group used DIMS lens and single vision lens (SVL) for intervention, respectively.Two researchers independently conducted the literature search, screening and data extraction based on the inclusion and exclusion criteria.Literature quality and risk of bias were evaluated in accordance with the requirements of the Cochrane Manual.Meta-analysis was performed using Revman 5.4 software.Results:A total of 7 clinical studies using DIMS lenses to intervene in the development of myopia were included .Seven studies provided complete SE data for analysis, with sample sizes of 1 164 eyes and 1 140 eyes for the DIMS group and SVL group, respectively.Five studies provided complete AL data for analysis, with sample sizes of 339 eyes and 315 eyes for the DIMS group and SVL group, respectively.There were statistically significant differences in SE and AL between DIMS group and SVL group (SE: WMD=0.40, 95% CI: 0.32-0.47, P<0.001; AL: WMD=-0.14, 95% CI: -0.17--0.11, P<0.001).DIMS lens could effectively delay SE progression and AL growth in myopic patients. Conclusions:DIMS lenses could delay the increase of SE and AL to a certain extent.
5.Efficacy evaluation of defocus incorporated multiple segments lenses on delaying the progression of myopia: a meta-analysis
Zhiming GU ; Xuan LIAO ; Xiaoling XIANG ; Ruiyu YANG ; Canyu WANG
Chinese Journal of Experimental Ophthalmology 2025;43(6):557-562
Objective:To evaluate the efficacy of defocus incorporated multiple segments (DIMS) on spherical equivalent (SE) and axial length (AL) in myopic children.Methods:Clinical studies on the progress of DIMS lens intervention in myopia reported in CNKI, Wanfang Data, VIP, China Biomedical Literature Database, PubMed, Embase, Cochrane Library, and Web of Science from the establishment of the database to June 2023 were searched.The experimental group and control group used DIMS lens and single vision lens (SVL) for intervention, respectively.Two researchers independently conducted the literature search, screening and data extraction based on the inclusion and exclusion criteria.Literature quality and risk of bias were evaluated in accordance with the requirements of the Cochrane Manual.Meta-analysis was performed using Revman 5.4 software.Results:A total of 7 clinical studies using DIMS lenses to intervene in the development of myopia were included .Seven studies provided complete SE data for analysis, with sample sizes of 1 164 eyes and 1 140 eyes for the DIMS group and SVL group, respectively.Five studies provided complete AL data for analysis, with sample sizes of 339 eyes and 315 eyes for the DIMS group and SVL group, respectively.There were statistically significant differences in SE and AL between DIMS group and SVL group (SE: WMD=0.40, 95% CI: 0.32-0.47, P<0.001; AL: WMD=-0.14, 95% CI: -0.17--0.11, P<0.001).DIMS lens could effectively delay SE progression and AL growth in myopic patients. Conclusions:DIMS lenses could delay the increase of SE and AL to a certain extent.
6.Study on the mechanism of oxidative stress in ocular diseases and therapeutic strategies
Canyu WANG ; Ruiyu YANG ; Yi SHAO ; Xuan LIAO
Recent Advances in Ophthalmology 2025;45(3):247-252
An imbalance between oxidative and antioxidant defense mechanisms in the body triggers oxidative stress,which causes a series of damages to the body,tissues and cells.The eye is particularly susceptible to oxidative stress due to its prolonged exposure to light and its anatomical characteristics of high metabolism and oxygen consumption.In addi-tion,inflammation,aging,genetic and environmental factors can promote the production of reactive oxygen species and weaken antioxidant defense mechanisms,which are all risk factors for oxidative stress that can lead to a variety of ocular diseases.The aim of this paper is to review the mechanisms of oxidative stress in ocular diseases such as ocular surface diseases,glaucoma,cataract,and retinopathy.At the same time,the potential therapeutic approaches to these diseases by regulating oxidative stress are discussed,so as to provide new ideas and directions for the diagnosis and treatment of ocular diseases.
7.Relationship of insulin resistance and related indicators with early neurological deterioration in branch atheromatous disease
Jiaqi XIU ; Canyu YANG ; Yang WANG ; Bing LI ; Zhi XI ; Si CHEN ; Xiaopeng YANG
Chinese Journal of Geriatric Heart Brain and Vessel Diseases 2025;27(11):1526-1530
Objective To investigate the association of insulin resistance(IR)and its related indices,including triacylglycerol-glucose(TyG)index and metabolic score of insulin resistance(Mets-IR),with the occurrence of early neurological deterioration(END)in patients with branch atheromatous disease(BAD),and develop a risk prediction model based on these factors.Methods A total of 189 BAD patients were consecutively recruited from the Department of Neurology of the Second Affiliated Hospital of Zhengzhou University between March 2020 and August 2024.Based on the occurrence of END within 7 d after admission,the participants were stratified into END(75 cases)and non-END(114 cases)groups.Demographic characteristics,clinical parameters,TyG index and Mets-IR values were systematically collected and analyzed.Multivariate logistic regression analysis was performed to identify independent risk factors for END in BAD-related stroke.Receiver operating characteristic curve(ROC)analysis was subsequently conducted to evaluate the predictive performance of significant variables,followed by construction of a nomogram prediction model.Results The END group exhibited significantly elevated fasting blood glucose[6.47(5.74,7.86)mmol/L vs 5.83(5.14,6.70)mmol/L]and triacylglycerol[1.65(1.21,2.04)mmol/L vs 1.27(0.99,1.57)mmol/L]levels,higher body mass index[25.02(23.88,26.67)kg/m2 vs 23.71(22.66,25.27)kg/m2]and TyG index(9.03±0.41 vs 8.71±0.45),and increased Mets-IR(39.98±4.23 vs 36.85±4.38)and NIHSS score[5.00(3.00,7.00)vs 3.00(2.00,5.00)]at admission when compared with the non-END group(P<0.05).Multivariate logistic regression analysis showed that high TyG index(OR=3.751,95%CI:1.592-9.202,P<0.01),Mets-IR(OR=1.146,95%CI:1.049-1.252,P<0.01),and NIHSS score at admission(OR=1.279,95%CI:1.128-1.451,P<0.01)were risk factors for the occurrence of END in BAD patients(P<0.05).ROC curve indicated that the AUC value of TyG index,Mets-IR,and NIHSS score at admission in predicting END occurrence was 0.698(95%CI:0.623-0.774,P<0.01),0.698(95%CI:0.620-0.775,P<0.01),and 0.666(95%CI:0.586-0.745,P<0.01),respectively.The nomogram prediction model based on these factors demonstrated significant clinical benefits by decision curve analysis and goodness of fit in internal calibration analysis.Conclusion IR shows significant association with END in BAD patients.The IR related indices,TyG index and Mets-IR,have certain predictive efficiency for occurrence and progression of END.
8.Ancient Literature Analysis and Modern Clinical Application of Famous Classical Formula Huagaisan
Qiaonan CHEN ; Canyu SU ; Chen WANG ; Liping ZHANG ; Wei ZHOU ; Conghui WANG ; Xien LOU
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(5):35-45
ObjectiveTo sort out the historical evolution, prescription evolution and modern clinical application of Huagaisan. MethodHuagaisan and its synonym Huagaitang are used as keywords to search the databases of Traditional Chinese Medicine Think Tank, Chinese Medical Dictionary, Airusheng Chinese Medical Database and China National Knowledge Infrastructure(CNKI). According to the inclusion and exclusion criteria, we obtained the information of ancient books and modern clinical research literature related to Huagaisan, and systematically reviewed and analyzed the historical origin, prescription composition, preparation method, dosage, efficacy, medicinal material origin, processing method and modern clinical application of Huagaisan. ResultA total of 198 pieces of ancient book information were included, involving 93 ancient Chinese medicine books. Huagaisan was composed of fried Perillae Fructus, red Poria, fried Mori Cortex, Citri Eoxcarpium Rubrum, stir-fried Armeniacae Semen Amarum, Ephedrae Herba and fried Glycyrrhizae Radix et Rhizoma, which had the efficacy of promoting the lungs and relieving epidemiological symptoms, expelling phlegm and relieving cough, and treating cough with wind-cold bundled epidemiological symptoms and stagnation of phlegm and Qi. The preparation method was suggested as boiling powder, crushing the seven herbs into coarse particles, the dosage of each drug was fried Perillae Fructus of 1.27 g, red Poria of 1.27 g, fried Mori Cortex of 1.27 g, Citri Eoxcarpium Rubrum of 1.27 g, stir-fried Armeniacae Semen Amarum of 1.27 g, Ephedrae Herba of 1.27 g and fried Glycyrrhizae Radix et Rhizoma of 0.64 g, taking 8.26 g when decocting, adding 300 mL of water, decocting to 210 mL, removing the dregs, and taking it warmly after meals. Twenty-one clinical research papers were included to analyze the modern clinical application of Huagaisan, which was mainly used in the treatment of respiratory diseases such as pneumonia, asthma, bronchitis and so on. ConclusionThis paper has verified and summarized the key information of the famous classical formula Huagaisan, which can provide a detailed reference basis for the development and clinical application of its compound preparation.
9.The role of caveolin-1 in the biofate and efficacy of anti-tumor drugs and their nano-drug delivery systems.
Canyu YANG ; Bing HE ; Wenbing DAI ; Hua ZHANG ; Ying ZHENG ; Xueqing WANG ; Qiang ZHANG
Acta Pharmaceutica Sinica B 2021;11(4):961-977
As one of the most important components of caveolae, caveolin-1 is involved in caveolae-mediated endocytosis and transcytosis pathways, and also plays a role in regulating the cell membrane cholesterol homeostasis and mediating signal transduction. In recent years, the relationship between the expression level of caveolin-1 in the tumor microenvironment and the prognostic effect of tumor treatment and drug treatment resistance has also been widely explored. In addition, the interplay between caveolin-1 and nano-drugs is bidirectional. Caveolin-1 could determine the intracellular biofate of specific nano-drugs, preventing from lysosomal degradation, and facilitate them penetrate into deeper site of tumors by transcytosis; while some nanocarriers could also affect caveolin-1 levels in tumor cells, thereby changing certain biophysical function of cells. This article reviews the role of caveolin-1 in tumor prognosis, chemotherapeutic drug resistance, antibody drug sensitivity, and nano-drug delivery, providing a reference for the further application of caveolin-1 in nano-drug delivery systems.
10.Clinicopathological analysis of 126 cases of infantile congenital melanocytic nevi
Fang LIU ; Canyu LI ; Hui FANG ; Fengming CHEN ; Yu LIU ; Lei WANG ; Tianwen GAO ; Zhe JIAN
Chinese Journal of Dermatology 2021;54(1):42-49
Objective:To analyze clinical and histopathological characteristics of infantile congenital melanocytic nevi (ICMN) .Methods:Clinical and pathological data were collected from 126 infants with confirmedly diagnosed congenital melanocytic nevi in Department of Dermatology, Xijing Hospital from January 2015 to January 2020, and were retrospectively analyzed. Chi-square test was used for comparisons of enumeration data.Results:Among the 126 patients with ICMN, 68 were males and 58 were females; 109 (86.5%) presented with skin lesions at birth; 73 (57.9%) were 2 - 3 years old at the first clinic visit. The skin lesions occurred on the head and face (76 cases, 60.3%) , trunk (24 cases, 19.1%) or extremities (26 cases, 20.6%) . There were 36 (28.6%) patients with small congenital nevi, 68 (54.0%) with M1-type medium-sized nevi, 13 (10.3%) with M2-type medium-sized nevi and 9 (7.1%) with giant nevi. Of 126 cases of ICMN, 121 (96.0%) had solitary lesions, 5 (4.0%) had multiple lesions, 44 (34.9%) had nevi with coarse hairs, 15 (11.9%) had nevi complicated by papules or hyperplastic nodules, and 6 (4.8%) had satellite lesions. Pathological subtypes included compound nevus (120 cases, 95.2%) , intradermal nevus (4 cases, 3.2%) , and junctional nevus (2 cases, 1.6%) . Under the microscope, the depth of the skin lesions was < 1 mm in 38 (30.1%) cases, 1 - 2 mm in 61 (48.4%) and > 2 mm in 25 (19.8%) , and 45 (35.7%) cases showed nevus cells infiltrating the subcutaneous fat layer or deeper tissues. Among the 126 ICMN lesions, common pathological features included nevus tissue maturation (100%, 2 cases of junctional nevi were excluded) , pigment granules in the stratum corneum (53 cases, 42.1%) , disordered/asymmetric distribution of nevus cells (80 cases, 63.5%) , scattered epidermal nevus cells (91 cases, 72.2%) , pagetoid spread of epidermal nevus cells (67 cases, 53.2%) , melanophages in the dermis (71 cases, 56.4%) , and nevus cells distributed along hair follicles/sebaceous glands (82 cases, 65.1%) . Special pathological features included nevus cells embedded in the vascular/lymphatic vessels (42 cases, 33.3%) , nevus cell lysis (45 cases, 35.7%) , fibromatous changes (25 cases, 19.8%) , involvement of the arrector pilli muscles (31 cases, 24.6%) , and mast cell infiltration (30 cases, 23.8%) . Pathological patterns of ICMN with different clinical features: the incidences of infiltration depth > 2 mm, pigment granules and columnar pigment granules in the stratum corneum were significantly higher in the giant nevi than in the small and medium-sized nevi ( χ2 = 7.93, 10.76, 5.89 respectively, all P < 0.05) ; the incidences of infiltration depth > 2 mm, epidermal spongiosis with scattered nevus cells, nevus cell nests distributed along the hair follicles/sebaceous glands, fibromatous changes and mast cell infiltration were significantly higher in the skin lesions with coarse hairs than in those without ( χ2 = 28.29, 8.11, 6.22, 7.92, 8.19 respectively, all P < 0.01) ; the incidences of pagetoid spread of epidermal nevus cells and atypical nevus cells were significantly higher in the skin lesions with papules/hyperplastic nodules than in those without papules/hyperplastic nodules ( χ2 = 4.92, 6.30 respectively, both P < 0.05) . Conclusions:The clinical and histopathological characteristics of ICMN are unique, and atypical nevus cells are common in ICMN. The diagnosis and treatment of ICMN need to be based on the combination of clinical and pathological characteristics.

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