1.Characteristics of the subtype of vestibular migraine with ear fullness: association with early onset age and low-frequency hearing loss.
Lizhu JIANG ; Shiqi YU ; Yan LEI ; Xiaofang ZONG ; Shixun ZHONG ; Wenqi ZUO
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2025;39(10):918-922
Objective:The clinical significance of aural fullness in patients with vestibular migraine(VM) remains unclear, and it is yet to be determined whether VM with aural fullness represents a distinct subtype of VM; this study aimed to compare differences in demographic characteristics, clinical manifestations, audiological findings, and vestibular function tests between VM patients with and without aural fullness, and explore whether the former is a subtype of VM and whether it requires differentiated treatment. Methods:A total of 174 VM patients were enrolled, including 75 with aural fullness(aural fullness group) and 99 without aural fullness(non-aural fullness group); demographic data, vertigo characteristics, medical history, family history, pure-tone audiometry, and vestibular function tests were thoroughly recorded, and independent samples t-test and chi-square test were used for inter-group comparisons. Results:①Regarding demographic characteristics, the age of the aural fullness group was significantly lower than that of the non-aural fullness group[(44.08±13.97) years vs. (49.45±16.05) years, P=0.020), while the two groups showed consistent gender distribution(more females than males) with no statistically significant difference. ②For aural fullness characteristics, unilateral aural fullness accounted for 65.0% in the aural fullness group, significantly higher than bilateral aural fullness(35.0%, P<0.001). ③In terms of vertigo characteristics, there were no statistically significant inter-group differences in the nature of attacks(rotational vertigo: 36.0% vs. 41.4%, P=0.463; dizziness: 21.3% vs. 11.1%, P=0.064; rotational vertigo or dizziness: 29.3% vs. 25.3%, P=0.548; dizziness with unsteady gait: 9.3% vs. 11.1%, Fisher P=0.806; visual oscillation with unsteady gait: 4.0% vs. 11.1%, Fisher P=0.086), duration(several hours: 34.7% vs. 33.3%, P=0.841; several minutes: 22.7% vs. 21.2%, P=0.808; several seconds: 5.3% vs. 8.1%, Fisher P=0.557; several days: 9.3% vs. 9.1%, Fisher P=1.000; multiple combined patterns: 17.3% vs. 15.2%, P=0.686), or incidence of nausea and vomiting(84.0% vs. 72.7%, P=0.071, no statistical significance). ④No statistically significant inter-group differences were found in medical history and family history, including motion sickness history(8.0% vs. 4.0%, Fisher P=0.337), headache history(22.7% vs. 34.3%, P=0.084), and family history of dizziness(12.0% vs. 14.1%, P=0.666). ⑤For audiological characteristics, 21.3%(16/75) of patients in the aural fullness group had low-frequency hearing loss, significantly higher than 5.1% in the non-aural fullness group(χ²=10.66, P=0.001); among patients with unilateral aural fullness, 28.6%(14/49) had ipsilateral low-frequency hearing loss, significantly higher than 7.7%(2/26) of those with bilateral aural fullness(χ²=4.41, P=0.036); however, there was no statistically significant difference in the rate of bilateral high-frequency hearing loss between the two groups(54.7%[41/75]vs. 50.5%[50/99], χ²=0.30, P=0.586). ⑥In vestibular function tests, no statistically significant inter-group differences were observed in smooth pursuit type Ⅲ/Ⅳ(12.5% vs. 13.1%, P=0.913), caloric test with CP>25%(31.2% vs. 37.4%, P=0.411), abnormal video head impulse test(vHIT) rate(30.8% vs. 32.6%, P=0.865), or abnormal vestibular evoked myogenic potential(VEMP) rate(53.8% vs. 38.9%, Fisher P=0.484). Conclusion:VM patients with aural fullness have an earlier age of onset, with nearly 1/4 accompanied by low-frequency hearing loss; VM patients with and without aural fullness are highly consistent in gender distribution, nature/duration of vertigo, vestibular function impairment, and presence of bilateral high-frequency hearing loss, suggesting that the core clinical phenotypes of the two groups are consistent, while the former has an earlier age of onset and a higher proportion of unilateral hearing loss, which may be related to the pathological mechanism of VM and inner ear microcirculation disorders.
Humans
;
Female
;
Male
;
Middle Aged
;
Adult
;
Migraine Disorders/classification*
;
Young Adult
;
Vertigo
;
Age of Onset
;
Aged
;
Hearing Loss
2.Preliminary analysis of mRNA m7G modifications in human Adenocarcinoma of esophagogastric junction.
Ziyan LIU ; Xiaoyan WANG ; Binbin HU ; Shiqi ZHANG ; Yakun LANG ; Yu FAN
Chinese Journal of Medical Genetics 2025;42(2):187-197
OBJECTIVE:
To explore the potential role of mRNA m7G modification in the pathogenesis of human adenocarcinoma of esophagogastric junction (AEG).
METHODS:
Pathological tissue specimens from four AEG patients who underwent surgical treatment at the People's Hospital Affiliated to Jiangsu University between 2018 and 2019 were selected. Tumor tissues and adjacent normal tissues were collected from these patients. RNA was extracted from both tissue types and subjected to m7G methylated RNA immunoprecipitation sequencing (m7G-MeRIP-seq) to analyze the patterns of m7G modification, the characteristics of differential m7G modification sites, the differentially expressed mRNA, and the correlation between m7G modification and mRNA expression levels. Differential m7G-modified genes (MSH6, BRCA1, and SOX9) were further validated using methylated RNA immunoprecipitation quantitative PCR (MeRIP-qPCR), while the expression of METTL1 and WDR4 genes was examined by real-time quantitative PCR (RT-qPCR). This study was approved by the Medical Ethics Committee of the People's Hospital Affiliated to Jiangsu University (Ethics No. 20150083).
RESULTS:
m7G-MeRIP-seq analysis revealed that m7G modifications in both AEG and adjacent normal tissues were predominantly located in the GC-rich region surrounding the internal start codon of mRNA. Differential m7G modification sites between the two groups were closely associated with cancer-related genes. mRNA library analysis showed that differentially expressed mRNA were predominantly upregulated in AEG tissues and downregulated in adjacent normal tissues. Cross-analysis indicated that genes with hypermethylation tended to exhibit upregulated expression, while genes with hypomethylation were typically downregulated in AEG tissues. MeRIP-qPCR validation confirmed that the mRNA expression of MSH6, BRCA1, and SOX9 were significantly upregulated in AEG tissues compared to adjacent normal tissues (AEG vs. normal, P < 0.05). RT-qPCR results demonstrated that the mRNA expression levels of METTL1 and WDR4 were also upregulated in AEG tissues (AEG vs. normal, P < 0.000 5).
CONCLUSION
These findings suggest that mRNA m7G modification plays a significant role in the development of AEG. Furthermore, proteins as METTL1 and WDR4 may facilitate AEG progression by regulating mRNA m7G modification. These results provide valuable insights into the molecular mechanisms underlying AEG and may inform future therapeutic strategies for this malignancy.
Humans
;
RNA, Messenger/metabolism*
;
Adenocarcinoma/pathology*
;
Esophagogastric Junction/metabolism*
;
Esophageal Neoplasms/metabolism*
;
Gene Expression Regulation, Neoplastic
;
Female
;
Male
;
Middle Aged
;
DNA Methylation
;
Methyltransferases/metabolism*
;
Stomach Neoplasms/genetics*
3.Association of TNFRSF11B gene rs2073618 and rs3102735 polymorphisms with susceptibility to Gastric cancer.
Xuan TANG ; Dandan GONG ; Shiqi ZHANG ; Xiaoyan WANG ; Yu FAN
Chinese Journal of Medical Genetics 2025;42(5):579-586
OBJECTIVE:
To explore the association between single nucleotide polymorphism (SNP) rs2073618 and rs3102735 of the TNFRSF11B gene and the susceptibility to gastric cancer.
METHODS:
A case-control study was conducted. A total of 577 patients with primary gastric cancer treated at Zhenjiang First People's Hospital from May 2013 to June 2017 were selected as the case group, and 678 healthy individuals who underwent physical examinations at the same hospital during the same period were enrolled as the control group. Blood samples were collected from both groups, and genomic DNA was extracted. The target gene fragments were amplified using PCR, and genotyping was performed using the Snapshot technique. Statistical analysis was conducted using SPSS v2.0 software. This study was approved by the Medical Ethics Committee of the Zhenjiang First People's Hospital (Ethics No. 20150083).
RESULTS:
The smoking rate was significantly higher in the case group than in the control group (P = 0.006). The T>C polymorphism at the rs3102735 locus of the TNFRSF11B gene was significantly associated with an increased risk of gastric cancer (CC vs. TT: OR = 2.164, 95%CI = 1.063~4.406, P = 0.030). In contrast, the rs2073618 polymorphism did not show a significant association with gastric cancer susceptibility (P > 0.05). Stratified analysis by age, gender, smoking status, and drinking status revealed no significant association between the rs2073618 polymorphism and gastric cancer susceptibility (P > 0.05). However, the rs3102735 polymorphism showed a significant association with gastric cancer risk in individuals over 62 years of age (CC vs. TT: OR = 5.44, 95%CI = 1.54~19.21, P = 0.003).
CONCLUSION
The rs3102735 polymorphism of the TNFRSF11B gene may be associated with susceptibility to gastric cancer, particularly in older populations. This polymorphism could serve as a potential indicator for identifying high-risk groups for gastric cancer.
Humans
;
Stomach Neoplasms/genetics*
;
Polymorphism, Single Nucleotide
;
Male
;
Female
;
Genetic Predisposition to Disease
;
Middle Aged
;
Case-Control Studies
;
Osteoprotegerin/genetics*
;
Aged
;
Adult
;
Genotype
4.Preliminary analysis of mRNA m7G modifications in human Adenocarcinoma of esophagogastric junction
Ziyan LIU ; Xiaoyan WANG ; Binbin HU ; Shiqi ZHANG ; Yakun LANG ; Yu FAN
Chinese Journal of Medical Genetics 2025;42(2):187-197
Objective:To explore the potential role of mRNA m7G modification in the pathogenesis of human adenocarcinoma of esophagogastric junction (AEG).Methods:Pathological tissue specimens from four AEG patients who underwent surgical treatment at the People′s Hospital Affiliated to Jiangsu University between 2018 and 2019 were selected. Tumor tissues and adjacent normal tissues were collected from these patients. RNA was extracted from both tissue types and subjected to m7G methylated RNA immunoprecipitation sequencing (m7G-MeRIP-seq) to analyze the patterns of m7G modification, the characteristics of differential m7G modification sites, the differentially expressed mRNA, and the correlation between m7G modification and mRNA expression levels. Differential m7G-modified genes ( MSH6, BRCA1, and SOX9) were further validated using methylated RNA immunoprecipitation quantitative PCR (MeRIP-qPCR), while the expression of METTL1 and WDR4 genes was examined by real-time quantitative PCR (RT-qPCR). This study was approved by the Medical Ethics Committee of the People′s Hospital Affiliated to Jiangsu University (Ethics No. 20150083). Results:① m7G-MeRIP-seq analysis revealed that m7G modifications in both AEG and adjacent normal tissues were predominantly located in the GC-rich region surrounding the internal start codon of mRNA. Differential m7G modification sites between the two groups were closely associated with cancer-related genes. ② mRNA library analysis showed that differentially expressed mRNA were predominantly upregulated in AEG tissues and downregulated in adjacent normal tissues. ③ Cross-analysis indicated that genes with hypermethylation tended to exhibit upregulated expression, while genes with hypomethylation were typically downregulated in AEG tissues. ④ MeRIP-qPCR validation confirmed that the mRNA expression of MSH6, BRCA1, and SOX9 were significantly upregulated in AEG tissues compared to adjacent normal tissues (AEG vs. normal, P<0.05). ⑤ RT-qPCR results demonstrated that the mRNA expression levels of METTL1 and WDR4 were also upregulated in AEG tissues (AEG vs. normal, P<0.000 5). Conclusion:These findings suggest that mRNA m7G modification plays a significant role in the development of AEG. Furthermore, proteins as METTL1 and WDR4 may facilitate AEG progression by regulating mRNA m7G modification. These results provide valuable insights into the molecular mechanisms underlying AEG and may inform future therapeutic strategies for this malignancy.
5.Association of TNFRSF11B gene rs2073618 and rs3102735 polymorphisms with susceptibility to Gastric cancer
Xuan TANG ; Dandan GONG ; Shiqi ZHANG ; Xiaoyan WANG ; Yu FAN
Chinese Journal of Medical Genetics 2025;42(5):579-586
Objective:To explore the association between single nucleotide polymorphism (SNP) rs2073618 and rs3102735 of the TNFRSF11B gene and the susceptibility to gastric cancer. Methods:A case-control study was conducted. A total of 577 patients with primary gastric cancer treated at Zhenjiang First People′s Hospital from May 2013 to June 2017 were selected as the case group, and 678 healthy individuals who underwent physical examinations at the same hospital during the same period were enrolled as the control group. Blood samples were collected from both groups, and genomic DNA was extracted. The target gene fragments were amplified using PCR, and genotyping was performed using the Snapshot technique. Statistical analysis was conducted using SPSS v2.0 software. This study was approved by the Medical Ethics Committee of the Zhenjiang First People′s Hospital (Ethics No. 20150083). Results:① The smoking rate was significantly higher in the case group than in the control group ( P=0.006). ② The T > C polymorphism at the rs3102735 locus of the TNFRSF11B gene was significantly associated with an increased risk of gastric cancer (CC vs. TT: OR=2.164, 95% CI=1.063~4.406, P=0.030). In contrast, the rs2073618 polymorphism did not show a significant association with gastric cancer susceptibility ( P>0.05). ③ Stratified analysis by age, gender, smoking status, and drinking status revealed no significant association between the rs2073618 polymorphism and gastric cancer susceptibility ( P>0.05). However, the rs3102735 polymorphism showed a significant association with gastric cancer risk in individuals over 62 years of age (CC vs. TT: OR=5.44, 95% CI=1.54~19.21, P=0.003). Conclusion:The rs3102735 polymorphism of the TNFRSF11B gene may be associated with susceptibility to gastric cancer, particularly in older populations. This polymorphism could serve as a potential indicator for identifying high-risk groups for gastric cancer.
6.The correlation between blood lipid levels and arterial stiffness in middle-aged and elderly Han Chinese with angiotensin-converting enzyme gene I/D polymorphism in Beijing
Zongxue JIN ; Yuanyuan LYU ; Li ZHAO ; Shiqi REN ; Laikang YU
Chinese Journal of Geriatrics 2025;44(3):346-352
Objective:To investigate the correlation between blood lipid levels and arterial stiffness in middle-aged and elderly Han Chinese individuals with angiotensin-converting enzyme(ACE)gene I/D polymorphism in Beijing.Methods:This was a cross-sectional study.The Han Chinese residents, aged 45 years and above, from Haidian District of Beijing, were recruited for the survey from May to August 2022.Based on the inclusion and exclusion criteria, 356 subjects were included, of which 100(28.09%)were male and 256(71.91%)were female.According to the population division criteria proposed by the World Health Organization, the subjects were divided into 253 cases in the middle-aged group[45-59 years old, median age 52.5(49.0, 56.0)years]and 103 cases in the elderly group[60-89 years old, median age 63.0(61.0, 65.0)years].Subjects were tested for ACE genotyping, lipids and brachial-ankle pulse wave velocity(baPWV).Lipid indices included triglyceride(TG), total cholesterol(TC), low density lipoprotein cholesterol(LDL-C)and high-density lipoprotein cholesterol(HDL-C).Results:In the middle-aged group, there were no significant differences in plasma levels of TC, TG and HDL-C between individuals with the DD genotype and those with the ID/Ⅱ genotype(all P>0.05).Similarly, in the elderly group, no significant differences were observed in plasma TC, TG, and HDL-C levels between individuals with the DD genotype and those with the ID/Ⅱ genotype(all P>0.05).In the middle-aged group, plasma LDL-C levels were significantly higher in the DD phenotype than in the ID/Ⅱ phenotype( Z=-2.483, P=0.013), while there was no significant difference in plasma LDL-C levels between the two phenotypes in the elderly group( Z=-0.935, P=0.350).There were no significant differences in baPWV between the DD and ID/Ⅱ phenotypes in both the middle-aged and elderly groups( Z=-0.104, -1.490, P=0.917, 0.136).In the elderly group, plasma TG levels were positively correlated with baPWV in the DD phenotype( r=0.590, P=0.016).In the middle-aged group, plasma TG levels were positively correlated with baPWV in the ID/Ⅱ phenotype( r=0.158, P=0.019), while plasma HDL-C levels were negatively correlated with baPWV( r=-0.174, P=0.009). Conclusions:Among middle-aged and elderly individuals with different ACE gene I/D polymorphisms, there are differences in blood lipid indicators sensitive to arterial stiffness.For middle-aged individuals with the ID/Ⅱ phenotype, arterial stiffness is more sensitive to high TG and low HDL-C levels, whereas for elderly individuals with the DD phenotype, arterial stiffness is more sensitive to high TG levels.These findings offer an experimental foundation for tailored blood lipid management strategies across diverse populations, aiming to maintain cardiovascular health and reduce the occurrence of cardiovascular diseases.
7.Analysis and prospects of the "Global strategy and action plan on oral health (2023-2030)"
Fan LIU ; Shiqi YU ; Xianglong HAN
Chinese Journal of Stomatology 2025;60(4):320-325
Oral diseases have become a major global public health issue. The "Global strategy and action plan on oral health (2023-2030)" issued by the World Health Organization in 2023 marks a milestone in advancing global oral health and serves as a pivotal initiative for implementing global oral health resolutions and strategies. Centered on universal health coverage, the action plan outlines multiple strategies and concrete actions, including strengthening prevention, early intervention, and integrated management, for improving the oral health worldwide. This paper provides a comprehensive review of the strategies and measures outlined in the action plan, aiming to offer valuable insights for developing an oral health pathway in China that aligns with national circumstances and the broader trajectory of human societal development.
8.Intervention of Sinomenine in Rat Osteoarthritis by Modulating FABP4
Shiqi ZHANG ; Jun ZHAO ; Ningning LIU ; Yu ZHANG ; Yifei ZHAO ; Jiao LIU ; Hongjian YU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(15):115-123
ObjectiveThis study aims to observe the effect of sinomenine (SIN) on fatty acid binding protein 4 (FABP4) in synovial tissue of rats with osteoarthritis (OA) and investigate the therapeutic mechanism of SIN on OA, further providing new ideas for the management of osteoarthritis by traditional Chinese medicine (TCM). MethodsAn OA rat model was constructed and randomly divided into a control group, an OA group, an OA + SIN-L group (50 mg·kg-1), an OA + SIN-M (100 mg·kg-1), an OA + SIN-H (200 mg·kg-1), and an OA + prednisone (PDN) group (5 mg·kg-1). Following surgical modeling for three weeks, an appropriate medication was administered for four weeks. During modeling and administration, a hot plate test was performed to detect the pain and swelling of the knee joints of the rats. The periarticular tissue was collected for arthropathological observation at the end of drug administration. The expression of cleaved Caspase-3, B-cell lymphoma-2 (Bcl-2), Bcl-2 associated X protein (Bax), and FABP4 in the synovial tissue of rats was detected by Western blot and real-time quantitative polymerase chain reaction (Real-time PCR), and the expression and distribution of FABP4 protein in the synovial membrane were detected by immunofluorescence. ResultsCompared with those in the control group, the levels of inflammatory factors and FABP4 in the serum of rats in the OA group were significantly increased (P<0.05, P<0.01), and joint swelling was significantly elevated (P<0.01). The thermal pain threshold was significantly reduced (P<0.01), and the expression of FABP4 protein and the fluorescence intensity were significantly increased (P<0.01). The synovial tissue exhibited significantly increased inflammatory infiltration, proliferated fibroblasts, and an elevated apoptotic index (P<0.05, P<0.01). Compared with those in the OA group, the serum lipid metabolism indexes of rats in the SIN administration group gradually returned to normal (P<0.05, P<0.01), while the levels of inflammatory factors and FABP4 in the serum of rats in the SIN-administered group were significantly reduced (P<0.05, P<0.01), and joint swelling was significantly decreased (P<0.05, P<0.01). The thermal pain threshold was significantly elevated (P<0.05, P<0.01), and the expression of FABP4 protein and fluorescence intensity in the synovial tissue were significantly decreased (P<0.05, P<0.01). The synovial tissue displayed significantly reduced inflammatory infiltration and a decreased apoptotic index (P<0.05, P<0.01). ConclusionThe therapeutic effect of SIN on OA may be related to the down-regulation of FABP4 expression, reduction of apoptosis, and inhibition of inflammatory factor expression.
9.Pharmacokinetic study of 3 blood-absorbed components of Xiangshao sanjie oral liquid in rats with hyperplasia of mammary gland
Yu ZHANG ; Jiaming LI ; Dan PENG ; Ruoqiu FU ; Yue MING ; Zhengbi LIU ; Jingjing WANG ; Shiqi CHENG ; Hongjun XIE ; Yao LIU
China Pharmacy 2025;36(6):680-685
OBJECTIVE To explore the pharmacokinetic characteristics of 3 blood-absorbed components of Xiangshao sanjie oral liquid in rats with hyperplasia of mammary gland (HMG). METHODS Female SD rats were divided into control group and HMG group according to body weight, with 6 rats in each group. The HMG group was given estrogen+progesterone to construct HMG model. After modeling, two groups were given 1.485 g/kg of Xiangshao sanjie oral liquid (calculated by crude drug) intragastrically, once a day, for 7 consecutive days. Blood samples were collected before the first administration (0 h), and at 5, 15, 30 minutes and 1, 2, 4, 8, 12, 24 hours after the last administration, respectively. Using chlorzoxazone as the internal standard, the plasma concentrations of ferulic acid, paeoniflorin and rosmarinic acid in rats were detected by UPLC-Q/TOF-MS. The pharmacokinetic parameters [area under the drug time curve (AUC0-24 h, AUC0-∞), mean residence time (MRT0-∞), half-life (t1/2), peak time (tmax), peak concentration (cmax)] were calculated by the non-atrioventricular model using Phoenix WinNonlin 8.1 software. RESULTS Compared with the control group, the AUC0-24 h, AUC0-∞ and cmax of ferulic acid in the HMG group were significantly increased (P<0.05); the AUC0-24 h, AUC0-∞ , MRT0-∞ , t1/2 and cmax of paeoniflorin increased, but there was no significant difference between 2 groups (P>0.05); the AUC0-24 h and MRT0-∞ of rosmarinic acid were significantly increased or prolonged (P<0.05). C ONCLUSIONS In HMG model rats, the exposure of ferulic acid, paeoniflorin and rosmarinic acid in Xiangshao sanjie oral liquid all increase, and the retention time of rosmarinic acid is significantly prolonged.
10.Collagen-based micro/nanogel delivery systems: Manufacturing, release mechanisms, and biomedical applications.
Bowei DU ; Shuhan FENG ; Jiajun WANG ; Keyi CAO ; Zhiheng SHI ; Cuicui MEN ; Tengfei YU ; Shiqi WANG ; Yaqin HUANG
Chinese Medical Journal 2025;138(10):1135-1152
Collagen-based materials, renowned for their biocompatibility and minimal immunogenicity, serve as exemplary substrates in a myriad of biomedical applications. Collagen-based micro/nanogels, in particular, are valued for their increased surface area, tunable degradation rates, and ability to facilitate targeted drug delivery, making them instrumental in advanced therapeutics and tissue engineering endeavors. Although extensive reviews on micro/nanogels exist, they tend to cover a wide range of biomaterials and lack a specific focus on collagen-based materials. The current review offers an in-depth look into the manufacturing technologies, drug release mechanisms, and biomedical applications of collagen-based micro/nanogels to address this gap. First, we provide an overview of the synthetic strategies that allow the precise control of the size, shape, and mechanical strength of these collagen-based micro/nanogels by controlling the degree of cross-linking of the materials. These properties are crucial for their performance in biomedical applications. We then highlight the environmental responsiveness of these collagen-based micro/nanogels, particularly their sensitivity to enzymes and pH, which enables controlled drug release under various pathological conditions. The discussion then expands to include their applications in cancer therapy, antimicrobial treatments, bone tissue repair, and imaging diagnosis, emphasizing their versatility and potential in these critical areas. The challenges and future perspectives of collagen-based micro/nanogels in the field are discussed at the end of the review, with an emphasis on the translation to clinical practice. This comprehensive review serves as a valuable resource for researchers, clinicians, and scientists alike, providing insights into the current state and future directions of collagen-based micro/nanogel research and development.
Collagen/chemistry*
;
Drug Delivery Systems/methods*
;
Humans
;
Tissue Engineering/methods*
;
Animals
;
Biocompatible Materials/chemistry*

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