1.Research progress on the bidirectional relationship between sleep disorders and Parkinson's disease
Chinese Journal of Geriatrics 2022;41(2):220-224
Parkinson's disease(PD)is a progressive neurodegenerative disorder that tends to occur in the elderly.Its clinical manifestations mainly include motor symptoms and non-motor symptoms, with sleep disorders among common non-motor symptoms of PD.The latest lines of evidence show that sleep disorders are not only clinical manifestations of neurodegenerative diseases, but also an important risk factor for the development and progression of neurodegenerative diseases.There is a bidirectional relationship between sleep disorders and neurodegenerative diseases, including PD.The possible mechanisms include accelerated α-synuclein pathology, deposition of Tau protein, inhibition of the glymphatic system, neuroinflammation and changes in the circadian rhythm system.In this article, we review research progress on the bidirectional relationship between sleep disorders and PD, related mechanisms, and the outlook on the treatment of PD through the management of sleep disorders.
2.Research progress on chemical constituents and pharmacological effects of Paeonia Radix Alba
Hongqian CUI ; Yuhao CHI ; Yuan SHEN
Journal of Xinxiang Medical College 2024;41(3):291-297
Paeonia Radix Alba is the dried root of Paeonia lactiflora Pall.in the ranunculus family,which is mainly produced in Zhejiang(Hang Paeony),Anhui(Hao Paeony)and Sichuan(Chuan Paeony).It has the effects of calming liver,relieving pain,nourishing blood,regulating menstrual period,collecting Yin,and preventing perspiration.Similar to Paeonia Radix Alba,Paeonia Radix Rubra is the dried root of Paeonia lactiflora Pall.or Paeonia veitchii Lynch.in the ranunculus family.Although the chemical constituents are similar,the efficacy and clinical application of the two herbal medicines are obviously different owing to their various processing methods and techniques.Modern studies have shown that Paeonia Radix Alba is rich in multiple chemical constituents,mainly including monoterpenoids and their glycosides,triterpenoids and their glycosides,volatile oils,flavonoids,and polyphenols,and has a wide range of pharmacological effects such as analgesia,anti-inflammation,anti-depression,liver protection,anti-tumor,and anti-hyperglycemia.This paper reviews the progress of research on effective constituents of Paeonia Radix Alba and their pharmacological effects to provide references for the comprehensive development and utilization of Paeonia Radix Alba.
3.Analysis of the clinicopathological characteristics of nephrogenic adenoma
Yuhao WANG ; Wenxu SHENG ; Zheng NI ; Wenyi GU ; Yufeng HUANG ; Huichang YAN ; Yuan JI
Chinese Journal of Clinical Medicine 2024;31(3):470-476
Objective To explore the clinicopathological and immunohistochemical features of nephrogenic adenoma(NA).Methods Clinical data of NA patients diagnosed in the Department of Pathology,Zhongshan Hospital,Fudan University from July 2016 to October 2022 were collected and analyzed to explore their clinicopathological features.Results A total of 13 NA cases were enrolled.There were 11 males and 2 females.Organs involved:ureter(n=7),bladder(n=5),bladder and ureter(n=1),renal pelvis(n=2).NA patients performed as ureteral stenosis(6/7),rough bladder wall(3/5),and renal pelvis polyp(2/2).The typical microscopical features of NA were tubular(13/13)and papillary(4/13)structures,covered with cuboidal or columnar epithelium(13/13),or a mixed hobnail-spike eosinophilic epithelium(12/13);the interstitium was loose,containing varied amounts of vasculature and inflammatory cells(13/13).Immunohistochemistry revealed specific expressions of CK7,PAX-8,CK19 and CK8.Conclusions NA is a rare neoplasm of the urinary system with unique histological features.NA has the risk of misdiagnosis and over-treatment,and the potential of recurrence and malignant conversion.The diagnosis of NA depends on pathology,and the immunohistochemistry can be helpful for its pathological diagnosis.
4.Causal relationship between thyroid dysfunction and sepsis: a bidirectional two-sample Mendelian randomization
Jiawen YUAN ; Dexiang WANG ; Yuhao HANG ; Qinyun LU ; Jian WANG ; Jun LU ; Lu CHENG
Chinese Critical Care Medicine 2024;36(7):734-739
Objective:To explore the causal relationship between thyroid dysfunction and sepsis based on the bidirectional two-sample Mendelian randomization (MR) method.Methods:The genome-wide association study (GWAS) dataset were selected to screen single nucleotide polymorphisms (SNP) associated with thyroid dysfunction as instrumental variable (IV) for genetic variation, using hypothyroidism and hyperthyroidism as exposure factor and sepsis as outcome factor. Potential causal relationship between thyroid dysfunction and sepsis was analyzed using a bidirectional two-sample MR method primary analysis method of inverse-variance weighted (IVW). Potential pleiotropic analysis of SNP was performed using the MR Egger regression intercept test. Sensitivity analysis was performed using the "leave one out" test. Reverse MR method was used to prove the causal relationship.Results:The GWAS data were screened based on the three main assumptions of MR, resulting in 101 SNP strongly associated with hypothyroidism and 10 SNP strongly associated with hyperthyroidism entering the MR analysis. The results of the MR using the IVW method showed that the risk of sepsis in individuals with hypothyroidism was 2.293 times higher than those without hypothyroidism [odds ratio ( OR) = 2.293, 95% confidence interval (95% CI) was 1.199-4.382, P = 0.012]. There was no significant difference in the risk of sepsis between hyperthyroid and non-hyperthyroid populations ( OR = 1.049, 95% CI was 0.999-1.100, P = 0.560). MR Egger regression intercept test showed that the included SNP did not have pleiotropy, and the MR-PRESSO test did not find outliers. Sensitivity analysis suggested that the results of MR were stable. The results of the reverse MR analysis showed that the reverse causal relationship between hyperthyroidism and sepsis was not proved ( OR = 0.996, 95% CI was 0.988-1.004, P = 0.338), which further confirmed the robust MR analysis result. Conclusion:The results of the bidirectional two-sample MR analysis show that hypothyroidism can increase the risk of sepsis onset, while there is no causal relationship between hyperthyroidism and sepsis.
5.Research hotspots and trends of medical humanities in China since the new era
Huiying ZHANG ; Jinfan WANG ; Yuhao MA ; Yuan HE
Chinese Medical Ethics 2025;38(3):336-345
ObjectiveTo analyze the development trajectory, research hotspots, and trends in medical humanities research in China since the new era. MethodsA search was conducted on the CNKI (China National Knowledge Infrastructure) advanced search page using the themes“medical humanities”or “humanistic medicine,”retrieving a total of 5,758 articles. After applying specific screening criteria, 5,095 articles were included in the analysis. Citespace6.1.R6 was used to visualize and analyze the authors, institutions, and keywords of the 5,095 articles. ResultsSince the new era, the volume of publications on medical humanities in China has shown an overall upward trend, with limited collaboration between core institutions and core authors. The research content of medical humanities has evolved from broad to specific, from abstract to concrete, and from theoretical to practical. ConclusionThe development of medical humanities research in China has generally gone through three stages: defining related concepts, integrating medical humanistic spirit into clinical practice, and applying empirical methods. Narrative medicine, ideological and political education in curricula, and medical humanities education are potential future research directions.
6.Morphological study on abnormal brain development induced by hypoxia in neonatal mice
Jie YUAN ; Yingqi LIU ; Yuhao DONG ; Yiyuan HUANG ; Sufang JIANG ; Ming ZHANG ; Xianghui ZHAO
Chinese Journal of Neuroanatomy 2023;39(6):633-640
Objective:Neonatal mice hypoxia model was established to observe the responses of the main neural cell types in cognition-related brain areas.Methods:Pups at postnatal day 2(P2)were subjected to 10%oxygen for suc-ceeding 5 days,and harvested at different development stage for histologic study.Immunofluorescence histochemistry was used to compare the changes of oligodendrocyte density,mature oligodendrocyte ratio and myelin protein level in corpus callosum(CC)and motor cortex(M1)after hypoxia,as well as the expression changes of excitatory and inhibi-tory neurons in anterior cingulate cortex(ACC),hippocampus(Hippo)and sensory cortex(S1).Furthermore,the density changes of different types of inhibitory intermediate neurons,microglia and astrocytes in ACC were compared.At the same time,the effect of hypoxia on the expression of synaptic proteins was also detected.Results:Quantitative immunofluorescence results showed lower myelin protein levels and mature oligodendrocyte ratio in CC and M1 of hypoxic mice compared with control mice.There was no significant difference in the number of excitatory neurons in ACC,but the number of gamma-aminobutyric acid(GABA)neurons in ACC,Hippo,and S1 were significantly reduced,especially parvalbumin neuron,ssomatostatin neurons,and vasoactive intestinal polypeptide neurons in ACC.The number of excitatory synapses labeled by vesicular glutamate transporter 1(VGluT1)and inhibitory synapses labeled by gephyrin were significantly decreased in ACC of hypoxic mice.Although there was no significant difference in astrocyte and microglia numbers,microglia were activated after hypoxic injury.Conclusion:Chronic hypoxia will lead to changes in the development of oligodendrocytes and interneurons,impair synapse formation.These results provide an important experimental basis for exploring the neural mechanism of diseases related to abnormal brain intelligence devel-opment.
8. Dlg1 Knockout Inhibits Microglial Activation and Alleviates Lipopolysaccharide-Induced Depression-Like Behavior in Mice
Zhixin PENG ; Zengqiang YUAN ; Zhixin PENG ; Xiaoheng LI ; Yuhao GAO ; Zengqiang YUAN ; Jun LI ; Yuan DONG ; Yajin LIAO ; Meichen YAN ; Zengqiang YUAN ; Jinbo CHENG
Neuroscience Bulletin 2021;37(12):1671-1682
Microglia-mediated neuroinflammation is widely perceived as a contributor to numerous neurological diseases and mental disorders including depression. Discs large homolog 1 (Dlg1), an adaptor protein, regulates cell polarization and the function of K
9.Dlg1 Knockout Inhibits Microglial Activation and Alleviates Lipopolysaccharide-Induced Depression-Like Behavior in Mice.
Zhixin PENG ; Xiaoheng LI ; Jun LI ; Yuan DONG ; Yuhao GAO ; Yajin LIAO ; Meichen YAN ; Zengqiang YUAN ; Jinbo CHENG
Neuroscience Bulletin 2021;37(12):1671-1682
Microglia-mediated neuroinflammation is widely perceived as a contributor to numerous neurological diseases and mental disorders including depression. Discs large homolog 1 (Dlg1), an adaptor protein, regulates cell polarization and the function of K
Animals
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Depression/chemically induced*
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Inflammation
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Lipopolysaccharides/toxicity*
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Mice
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Mice, Inbred C57BL
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Mice, Knockout
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Microglia
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NF-kappa B
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Neuroinflammatory Diseases