1.Effects of wogonin on joint inflammation in collagen-induced arthritis rats via the endoplasmic reticulum stress pathway
Yuru WANG ; Siyuan LI ; Ye XU ; Yumeng ZHANG ; Yang LIU ; Huiqin HAO
Chinese Journal of Tissue Engineering Research 2025;29(5):1026-1035
BACKGROUND:Rheumatoid arthritis is an inflammatory disease.Many studies have shown that wogonin has a good anti-inflammatory effect on rheumatoid arthritis,but its exact efficacy and specific mechanism of action remain to be clarified. OBJECTIVE:To investigate the mechanism of wogonin ameliorating joint inflammation by regulating endoplasmic reticulum stress pathway in rats with collagen-induced arthritis. METHODS:(1)At the animal level:Female Wistar rats were divided into healthy control group,arthritis model group and wogonin treatment group.Rat models of arthritis in the latter two groups were established by subcutaneous injection of bovine type Ⅱ collagen and adjuvant.In the wogonin group,wogonin was given by gavage for 28 consecutive days after modeling.During this period,the rats in each group were weighed,and arthritis score and ankle swelling were measured every 7 days.After the experiment,the pathological changes of the joint were observed,the mRNA and protein levels of endoplasmic reticulum stress pathway GRP78 and CHOP were detected by qRT-PCR,western blot,and immunohistochemistry.(2)At the cellular level,cell counting kit-8 was used to detect the cytotoxic effect of wogonin on fibroblast-like synoviocytes from rats with collagen-induced arthritis.The fibroblast-like synoviocytes induced by thapsigargin were treated with different concentrations of wogonin.The levels of interleukin-1β and tumor necrosis factor-α in the cell supernatant were detected by ELISA,and the intracellular reactive oxygen species in each group were determined by DCFH-DA probe method.The mRNA and protein levels of GRP78,IRE1α,XBP1s and CHOP were detected by qRT-PCR and western blot,respectively. RESULTS AND CONCLUSION:Compared with the healthy control group,arthritis index score and ankle swelling degree in the arthritis model group were increased(P<0.01),synovial hyperplasia,inflammatory cell infiltration,cartilage destruction and bone erosion were observed in pathological sections,and the mRNA and protein expressions of GRP78 and CHOP in the ankle were significantly increased(P<0.01),which were mainly located in synovial tissue and articular surface.Compared with the arthritis model group,the arthritis index score and ankle swelling degree in the wogonin treatment group were decreased(P<0.05),synovial hyperplasia and the number of inflammatory cells were decreased,cartilage destruction and bone erosion were alleviated,the mRNA and protein expression levels of GRP78 and CHOP in the ankle were decreased(P<0.05),particularly in synovial tissue and on the articular surface.There was no significant difference in body mass among the three groups(P>0.05).In the cell experiment,200 μmol/L wogonin significantly reduced the survival rate of fibroblast-like synoviocytes(P<0.01).Compared with the blank control group,the levels of interleukin-1β,tumor necrosis factor-α,content of reactive oxygen species,and mRNA and protein expression of GRP78,IRE1α,XBP1s,and CHOP in the thapsigargin group were significantly increased(P<0.05);compared with the thapsigargin group,50 and 100 μmol/L wogonin significantly reduced the levels of interleukin-1β and tumor necrosis factor-α in the cell supernatant(P<0.05,P<0.01),and 100 μmol/L wogonin significantly reduced the content of reactive oxygen species(P<0.01)and down-regulated the mRNA and protein expression levels of GRP78,IRE1α,XBP1s and CHOP(all P<0.05).These results suggest that wogonin can effectively alleviate joint inflammatory responses in rats with collagen-induced arthritis,and the endoplasmic reticulum stress pathway may be the key target of its intervention.
2.Experience in Staged Differentiation and Treatment of Cirrhotic Ascites Based on the Theory of Tonification and Purging
Haihang DONG ; Yujie CAI ; Huiqin ZHANG ; Yan CHEN ; Yuying TU ; Dongling WANG ; Yinqiang ZHANG
Journal of Traditional Chinese Medicine 2025;66(5):532-536
It is believed that patients with cirrhotic ascites exhibit a pathological mechanism characterized by the decline of healthy qi and the accumulation of pathogenic factors. Clinically, treatment should be based on the theory of tonification and purging, with a staged approach distinguishing between the active phase and the remission phase. The balance between tonification and purging should be adjusted according to the progression of pathogenic and healthy actors. In the acute phase, purging should take precedence over tonification, using purging as a means of tonification to facilitate the flow of water and qi through the triple energizer. The severity of water retention, dampness, blood stasis, and heat should be carefully assessed to ensure thorough elimination of pathogenic factors while avoiding harm to healthy qi. Medication adjustments should be made once the pathogenic factors are significantly weakened. In the remission phase, an integrated approach combining both tonification and purging should be adopted, incorporating purging within tonification to clear residual pathogens and prevent recurrence. Concurrently, proactive treatment of the underlying disease is essential to achieve complete recovery and prevent the recurrence of ascites.
3.Genetic detection for hereditary cancer syndrome among general population
Xinning CHEN ; Li ZHANG ; Li YU ; Huiqin JIANG ; Fei HUANG ; Chunyan ZHANG ; Baishen PAN ; Beili WANG ; Wei GUO
Chinese Journal of Clinical Medicine 2025;32(4):627-633
Objective To examine the significance of susceptible gene detection for hereditary cancer syndrome (HCS) among general population. Methods A total of 2 928 individuals undergoing routine health examinations in Healthcare Center of Zhongshan Hospital, Fudan University, from September 2021 to April 2024 were enrolled retrospectively. Next generation sequencing was employed to identify susceptible genes for HCS. American College of Medical Genetics and Genomics (ACMG) guideline was used to analyze the pathogenicity of variants. Clinical data, imagings, follow-up data were also collected. Results The overall mutation rate of HCS panel was 3.59% (105/2 928), with 0.61% (18/2 928) for MutY DNA glycosylase (MUTYH), 0.27% (8/2 928) for breast cancer susceptibility gene 1/2 (BRCA1/2) and 0.23% (7/2 928) for mismatch repair (MMR) genes. Conclusions Healthy individuals carrying tumor susceptible genes usually lack the relevant clinical phenotypes. Whether comprehensive testing needs to be carried out among healthy people remains to be further explored.
4.Relationship between eNOS gene polymorphism and main complications in premature infants
Xiaoyan Li ; Bing Li ; Jia' ; an Wang ; Xian Dong ; Huiqin Wang ; Haijuan Zhu ; Bin Zhang
Acta Universitatis Medicinalis Anhui 2025;60(4):719-724
Objective :
To explore the polymorphism of endothelial nitric oxide synthase(eNOS) gene in umbilical cord blood of preterm infants and its relationship with major complications in preterm infants.
Methods :
A total of 254 preterm infants(<37 weeks) who were hospitalized were selected as the study subjects. Umbilical cord blood was collected at delivery to determine the genotypes and alleles of eNOS gene at three loci: rs61722009, rs2070744,and rs1799983. Clinical data of the preterm infants were recorded, and the relationship between eNOS gene polymorphism and major complications in preterm infants was analyzed.
Results:
(1) The TC+CC genotype at locus rs2070744 was an independent risk factor for bronchopulmonary dysplasia(BPD) in preterm infants, with an OR(95%CI) of 1.266(1.017-1.577).(2) The GT+TT genotype at locus rs1799983 was an independent risk factor for retinopathy prematurity(ROP), with an OR(95%CI) of 1.184(1.008-1.391).(3) The AB+AA genotype at locus rs61722009 was also an independent risk factor for ROP,with an OR(95%CI) of 1.335(1.033-1. 726).(4) There was no significant relationship between gene polymorphism and the occurrence of respiratory distress syndrome( RDS) and periventricular-intraventricular hemorrhage( PIVH).
Conclusion
eNOS gene polymorphism is associated with the occurrence of BPD and ROP in preterm infants. The evaluation of e NOS gene polymorphism by umbilical cord blood measurement is helpful for the prevention and correct management of some serious complications.
5.A real-world study of the clinical application of the Paris system for reporting urinary cytology in cancer hospital
Huan ZHAO ; Zhihui ZHANG ; Huiqin GUO ; Na WEI ; Haiyue MA ; Linlin ZHAO ; Yue SUN ; Cong WANG ; Xinxiang CHANG ; Xingang BI ; Nianzeng XING
Chinese Journal of Oncology 2024;46(7):703-709
Objectives:To evaluate the clinical value of the Paris system for reporting urinary cytology (TPS) in the diagnosis of urothelial carcinoma (UC).Methods:A total of 1 744 cytological diagnostic records (from 751 cases) were collected retrospectively. All specimens were voided urines and histopathology as the gold standard. The sensitivity and specificity of urinary cytological diagnosis of UC and risk of high grade malignant (ROHM) in each diagnostic category were compared.Results:There were 360 cases with histopathology. The percentage of negative for high-grade urothelial carcinoma (NHGUC) was 30.1% (226/751), atypical urothelial cells (AUC) was 29.8% (224/751), suspicious for high-grade urothelial carcinoma (SHGUC) was 16.8% (126/751), high grade urothelial carcinoma (HGUC) was 21.2% (159/751), and non-urothelial malignancy (NUM) was 2.1% (16/751). The histpathologic ROHM corresponding to each cytological diagnosis category were 27.3% for NHGUC, 32.7% for AUC, 74.7% for SHGUC, 96.6% for HGUC and 100.0% for NUM, respectively. ROHM of SHGUC was significantly higher than that of AUC group, and the difference between the two groups was statistically significant ( P<0.001). ROHM of HGUC group was significantly higher than that of SHGUC group, and the difference was statistically significant ( P<0.001). With SHGUC as the cut-off value, the sensitivity and specificity of cytological diagnosis of HGUC were 76.7% (165/215) and 85.7% (18/21), and with HGUC as the cut-off value, the sensitivity and specificity of cytological diagnosis of HGUC were 53.0% (114/215) and 100.0% (21/21), respectively. Conclusions:Urine cytology has high sensitivity and specificity in the diagnosis of HGUC. The malignant risk of TPS varies with different diagnosis category. The high malignant risk population in cancer hospital leads to the relatively high malignant proportion and ROHM in each diagnosis category. Urinary cytology TPS reporting system is helpful to clinical management and has good clinical application value.
6.Application of 9-gene panel in assisting fine needle aspiration cytology to diagnose thyroid cancer
Yanqi ZHANG ; Huan ZHAO ; Linlin ZHAO ; Yue SUN ; Cong WANG ; Zhihui ZHANG ; Tian QIU ; Xin YANG ; Ting XIAO ; Huiqin GUO
Chinese Journal of Oncology 2024;46(11):1049-1057
Objective:To evaluate the utility of the 9-gene panel as a differential diagnostic method for thyroid nodules within determinate cytological diagnosis and as a parallel diagnostic method for thyroid fine-needle aspiration (FNA) cytology.Methods:579 liquid-based cytology samples from 544 patients were collected after thyroid FNA diagnosis in our hospital from December 2014 to April 2021. Mutations at any site of 9 genes, namely, BRAF, NRAS, HRAS, KRAS, GNAS, RET, TERT, TP53, and PIK3CA as recorded by the Catalogue of Somatic Mutations in Cancer (COSMIC), were analyzed by next-generation sequencing. Taking postoperative histopathology and cytology results with definite benign or malignant diagnosis as the gold standard, the diagnostic efficacy of the 9-gene panel as a reclassified method for thyroid nodules with indeterminate cytological diagnosis and as a parallel diagnostic method for thyroid FNA cytology were evaluated and compared with that of the BRAF V600E single-gene detection method.Results:Of the 579 thyroid nodules, 196 (33.85%) were Bethesda Ⅱ, 11 (1.90%) were Bethesda Ⅲ, 31 (5.35%) were Bethesda Ⅳ, 27 (4.66%) were Bethesda Ⅴ, and 314 (54.23%) were Bethesda Ⅵ, as diagnosed by thyroid FNA cytology. Among these 579 thyroid nodules, 275 were tested positive for 9-gene mutations, with a mutation rate of 47.5%. Of the 329 thyroid nodules surgically removed, 30 (9.12%) were benign, 5 (1.52%) were borderline, and 294 (89.36%) were malignant. Regarding borderline nodules as malignant nodules, the mutation rates of the 9 genes in the 299 malignant thyroid nodules from high to low were BRAF 62.21% (186/299), NRAS 5.02% (15/299), HRAS 1.00% (3/299), PIK3CA 0.67% (2/299), GNAS 0.67% (2/299), KRAS 0.33% (1/299), TP53 0.33% (1/299), TERT 0.33% (1/299) and RET 0.00% (0/299). The malignant risks of the 9 genes from high to low were BRAF 100% (186/186), PIK3CA 100.00% (2/2), GNAS 100.00% (2/2), TERT 100.00% (1/1), TP53 100.00% (1/1), NRAS 78.95% (15/19), HRAS 75.00% (3/4), and KRAS 50.00% (1/2). For thyroid nodules of Bethesda Ⅲ-Ⅳ (indeterminate diagnosis), the sensitivity (SN) of the 9-gene panel in diagnosing thyroid cancer is 34.48% (10/29), the specificity (SP) is 61.54% (8/13), and the accuracy is 42.86% (18/42); whereas the SN of the BRAF V600E detection method is 0%. Therefore, the diagnostic efficiency of the 9-gene panel is significantly better than that of BRAF V600E single gene detection. For thyroid nodules of Bethesda Ⅱ-Ⅵ, the SN of the 9-gene panel in diagnosing thyroid cancer was 68.83% (254/369), the SP was 90.00% (189/210), the accuracy was 76.51% (443/579), and the area under the curve (AUC) was 0.79; whereas the SN of BRAF V600E single-gene detection in diagnosing thyroid cancer was 63.69% (235/369), the SP was 99.52% (209/210), the accuracy was 76.68% (444/579), and the AUC was 0.82. The SP of BRAF V600E detection is higher than that of the 9-gene panel ( P<0.01), but there is no significant difference in SN, accuracy (both P>0.05), and AUC ( Z=0.85, P=0.396) between them. Gene mutations indicating poor prognosis were detected in 4 nodules of papillary thyroid carcinoma and 1 nodules of follicular thyroid carcinoma, including 2 nodules with TERT and BRAF V600E co-mutations, 1 nodule with TP53 mutation, and 2 nodules with PIK3CA mutation. Conclusions:As a reclassified method for thyroid lesions with indeterminate cytological diagnosis, the 9-gene panel is better than BRAF V600E single gene detection. As a parallel diagnostic method of thyroid FNA cytology, the 9-gene panel has similar diagnostic efficacy as BRAF V600E single-gene detection. The 9-gene panel can detect individual cases with gene mutations indicating poor prognosis. The identification of patients with these special gene mutations has certain implications for the clinical management of them.
7.A real-world study of the clinical application of the Paris system for reporting urinary cytology in cancer hospital
Huan ZHAO ; Zhihui ZHANG ; Huiqin GUO ; Na WEI ; Haiyue MA ; Linlin ZHAO ; Yue SUN ; Cong WANG ; Xinxiang CHANG ; Xingang BI ; Nianzeng XING
Chinese Journal of Oncology 2024;46(7):703-709
Objectives:To evaluate the clinical value of the Paris system for reporting urinary cytology (TPS) in the diagnosis of urothelial carcinoma (UC).Methods:A total of 1 744 cytological diagnostic records (from 751 cases) were collected retrospectively. All specimens were voided urines and histopathology as the gold standard. The sensitivity and specificity of urinary cytological diagnosis of UC and risk of high grade malignant (ROHM) in each diagnostic category were compared.Results:There were 360 cases with histopathology. The percentage of negative for high-grade urothelial carcinoma (NHGUC) was 30.1% (226/751), atypical urothelial cells (AUC) was 29.8% (224/751), suspicious for high-grade urothelial carcinoma (SHGUC) was 16.8% (126/751), high grade urothelial carcinoma (HGUC) was 21.2% (159/751), and non-urothelial malignancy (NUM) was 2.1% (16/751). The histpathologic ROHM corresponding to each cytological diagnosis category were 27.3% for NHGUC, 32.7% for AUC, 74.7% for SHGUC, 96.6% for HGUC and 100.0% for NUM, respectively. ROHM of SHGUC was significantly higher than that of AUC group, and the difference between the two groups was statistically significant ( P<0.001). ROHM of HGUC group was significantly higher than that of SHGUC group, and the difference was statistically significant ( P<0.001). With SHGUC as the cut-off value, the sensitivity and specificity of cytological diagnosis of HGUC were 76.7% (165/215) and 85.7% (18/21), and with HGUC as the cut-off value, the sensitivity and specificity of cytological diagnosis of HGUC were 53.0% (114/215) and 100.0% (21/21), respectively. Conclusions:Urine cytology has high sensitivity and specificity in the diagnosis of HGUC. The malignant risk of TPS varies with different diagnosis category. The high malignant risk population in cancer hospital leads to the relatively high malignant proportion and ROHM in each diagnosis category. Urinary cytology TPS reporting system is helpful to clinical management and has good clinical application value.
8.Application of 9-gene panel in assisting fine needle aspiration cytology to diagnose thyroid cancer
Yanqi ZHANG ; Huan ZHAO ; Linlin ZHAO ; Yue SUN ; Cong WANG ; Zhihui ZHANG ; Tian QIU ; Xin YANG ; Ting XIAO ; Huiqin GUO
Chinese Journal of Oncology 2024;46(11):1049-1057
Objective:To evaluate the utility of the 9-gene panel as a differential diagnostic method for thyroid nodules within determinate cytological diagnosis and as a parallel diagnostic method for thyroid fine-needle aspiration (FNA) cytology.Methods:579 liquid-based cytology samples from 544 patients were collected after thyroid FNA diagnosis in our hospital from December 2014 to April 2021. Mutations at any site of 9 genes, namely, BRAF, NRAS, HRAS, KRAS, GNAS, RET, TERT, TP53, and PIK3CA as recorded by the Catalogue of Somatic Mutations in Cancer (COSMIC), were analyzed by next-generation sequencing. Taking postoperative histopathology and cytology results with definite benign or malignant diagnosis as the gold standard, the diagnostic efficacy of the 9-gene panel as a reclassified method for thyroid nodules with indeterminate cytological diagnosis and as a parallel diagnostic method for thyroid FNA cytology were evaluated and compared with that of the BRAF V600E single-gene detection method.Results:Of the 579 thyroid nodules, 196 (33.85%) were Bethesda Ⅱ, 11 (1.90%) were Bethesda Ⅲ, 31 (5.35%) were Bethesda Ⅳ, 27 (4.66%) were Bethesda Ⅴ, and 314 (54.23%) were Bethesda Ⅵ, as diagnosed by thyroid FNA cytology. Among these 579 thyroid nodules, 275 were tested positive for 9-gene mutations, with a mutation rate of 47.5%. Of the 329 thyroid nodules surgically removed, 30 (9.12%) were benign, 5 (1.52%) were borderline, and 294 (89.36%) were malignant. Regarding borderline nodules as malignant nodules, the mutation rates of the 9 genes in the 299 malignant thyroid nodules from high to low were BRAF 62.21% (186/299), NRAS 5.02% (15/299), HRAS 1.00% (3/299), PIK3CA 0.67% (2/299), GNAS 0.67% (2/299), KRAS 0.33% (1/299), TP53 0.33% (1/299), TERT 0.33% (1/299) and RET 0.00% (0/299). The malignant risks of the 9 genes from high to low were BRAF 100% (186/186), PIK3CA 100.00% (2/2), GNAS 100.00% (2/2), TERT 100.00% (1/1), TP53 100.00% (1/1), NRAS 78.95% (15/19), HRAS 75.00% (3/4), and KRAS 50.00% (1/2). For thyroid nodules of Bethesda Ⅲ-Ⅳ (indeterminate diagnosis), the sensitivity (SN) of the 9-gene panel in diagnosing thyroid cancer is 34.48% (10/29), the specificity (SP) is 61.54% (8/13), and the accuracy is 42.86% (18/42); whereas the SN of the BRAF V600E detection method is 0%. Therefore, the diagnostic efficiency of the 9-gene panel is significantly better than that of BRAF V600E single gene detection. For thyroid nodules of Bethesda Ⅱ-Ⅵ, the SN of the 9-gene panel in diagnosing thyroid cancer was 68.83% (254/369), the SP was 90.00% (189/210), the accuracy was 76.51% (443/579), and the area under the curve (AUC) was 0.79; whereas the SN of BRAF V600E single-gene detection in diagnosing thyroid cancer was 63.69% (235/369), the SP was 99.52% (209/210), the accuracy was 76.68% (444/579), and the AUC was 0.82. The SP of BRAF V600E detection is higher than that of the 9-gene panel ( P<0.01), but there is no significant difference in SN, accuracy (both P>0.05), and AUC ( Z=0.85, P=0.396) between them. Gene mutations indicating poor prognosis were detected in 4 nodules of papillary thyroid carcinoma and 1 nodules of follicular thyroid carcinoma, including 2 nodules with TERT and BRAF V600E co-mutations, 1 nodule with TP53 mutation, and 2 nodules with PIK3CA mutation. Conclusions:As a reclassified method for thyroid lesions with indeterminate cytological diagnosis, the 9-gene panel is better than BRAF V600E single gene detection. As a parallel diagnostic method of thyroid FNA cytology, the 9-gene panel has similar diagnostic efficacy as BRAF V600E single-gene detection. The 9-gene panel can detect individual cases with gene mutations indicating poor prognosis. The identification of patients with these special gene mutations has certain implications for the clinical management of them.
9.Heterogeneity and related factors of dyadic coping in infertility couples
Huiqin XI ; Meimei TIAN ; Lei XIE ; Yurui XU ; Xin HUANG ; Ying XU ; Yaqing ZHANG
Journal of Shanghai Jiaotong University(Medical Science) 2024;44(6):746-754
Objective·To analyze infertility couples,dyadic coping level by using latent profile analysis(LPA),and explore the heterogeneity and related factors of different profiles.Methods·From September to November 2023,257 newly diagnosed infertility couples in pre-infertility treatment with assisted reproductive technology(ART)were recruited from Reproductive Medicine Center,Renji Hospital,Shanghai Jiao Tong University School of Medicine.All couples were evaluated by using general information questionnaire,Fertility Problem Inventory(FPI),Dyadic Coping Inventory(DCI),and Fertility Quality of Life(FertiQoL)Tool.LPA was used to explore the dyadic coping profiles of the couples before ART treatment,and general information,FPI scores and FertiQoL scores were compared among the profiles.Multinomial Logistic regression analysis was used to explore the related factors of different profiles.Results·A total of 257 couples with infertility were included,with an average age of(30.15±3.07)years for females,(31.82±3.82)years for males,(3.75±2.16)years for marriage,and(2.90±1.92)years for infertility;there were 118 couples caused by male infertility,109 couples caused by female infertility,and 30 couples caused by both infertility;the average DCI score for males was(128.25±19.15)points,while for females it was(129.91±18.32)points.According to the dyadic coping levels,the infertile couples were divided into four profiles:common positive coping group(153 couples,59.5%),common negative coping group(85 couples,33.1%),male positive coping group(12 couples,4.7%),and male negative coping group(7 couples,2.7%).There were statistically significant differences in the infertile couples'age,FPI score,FertiQoL score,and remarriage rate among the four profiles(P<0.05).Multinomial Logistic regression analysis results showed that,with the common positive coping group as the reference,the common negative coping group had older men(OR=1.122,95%CI 1.004-1.254,P=0.036),higher FPI scores for both males and females(male:OR=1.019,95%CI 1.003-1.035,P=0.018;female:OR=1.020,95%CI 1.004-1.036,P=0.015),and lower FertiQol scores for males(OR=0.966,95%CI 0.937-0.996,P=0.029).Conclusion·There are four types of dyadic coping profiles in infertile couples before ART treatment.Compared with the common positive coping couples,higher reproductive pressure,elder age,and lower perceived fertility quality of life of males,and higher reproductive pressure of females are all risk factors for common negative coping couples.
10.Corneal transparency changes in patients with type 2 diabetes and its influencing factors
Yuwei ZHENG ; Bin GUO ; Shengsheng WEI ; Huiqin ZHANG ; Jiamei ZHANG ; Yan WANG
Chinese Journal of Experimental Ophthalmology 2024;42(8):716-721
Objective:To investigate corneal transparency alteration in patients with type 2 diabetes and its influencing factors.Methods:A case-control study was conducted.A total of 52 patients with type 2 diabetes mellitus (DM) (104 eyes) and 23 age-matched healthy controls (46 eyes) were enrolled as DM group and normal control group in the Second Affiliated Hospital of Anhui Medical University from October 1, 2020 to October 30, 2021.Patients with DM were further divided into non-diabetic retinopathy (non-DR) and DR groups according to their fundus conditions.Corneal densitometry (CD) was evaluated using the Pentacam.According to its built-in program, the cornea was divided into anterior, intermediate, and posterior layers and subdivided into 0-2 mm, >2-6 mm, >6-10 mm, and >10-12 mm annular regions with the corneal apex as the center of the circle.Pentacam automatically calculated the CD value of each corneal layer and region as well as the total CD value.The influencing factors of total CD value in diabetes group were analyzed by a multivariate linear regression analysis model.This study adhered to the Declaration of Helsinki.The study protocol was approved by the Ethics Committee of the Second Affiliated Hospital of Anhui Medical University (No.YX2023-129[F1]).Written informed consent was obtained from each subject before any medical examination.Results:The total CD value of diabetes group was 20.24±3.10, which was significantly higher than 18.79±3.31 of normal control group ( t=-2.583, P=0.011).The CD values of the anterior layer, intermediate layer, 0-2 mm, and >2-6 mm regions were significantly higher in diabetes group than in normal control group (all at P<0.05).The CD values in the anterior layer were higher in non-DR and DR groups than in normal control group, and the CD values and total CD values in the middle and posterior layers were higher in non-DR group than in normal control group and DR group, and the differences were statistically significant (all at P<0.05).The CD values in the 0-2 mm and >2-6 mm regions were significantly higher in non-DR group than in normal control group, and the CD value in the >6-10 mm annular region was significantly higher in non-DR group than in DR group and normal control group (all at P<0.05).Multivariate linear regression analysis showed that age and glycosylated hemoglobin (HbA1c) level were the main influencing factors for the increase in CD values in diabetic patients ( β=0.266, P<0.001; β=0.423, P=0.003). Conclusions:The decrease of corneal transparency precedes the appearance of DR in patients with diabetes.Poor control of HbA1c level in diabetic patients may cause the decline of corneal transparency.


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