The chapter Zhouyu in Guoyu says "Qi of the heaven and the earth moves without losing its order." With lucidity ascending and turbidity descending， Qi moves in a normal state， and Yin and Yang consolidate the foundation of the body. The mutual interference between lucidity and turbidity leads to the disorder of Qi movement， thus causing diseases. It is a pathological state of disorder between ascending and descending， as well as between entering and exiting， gradually evolving into a state of turbidity affecting lucidity and transforming into pathogen， which can be used to interpret and analyze the core of disease pathogenesis. The theory of lucidity and turbidity is connected with the harmony of nutrient and defensive aspects， Qi circulation， and sweat pore associating with Qi movement， and it has common implications with immune responses and nutrient metabolism system， intestinal mucosal barrier function， and mitochondrial energy synthesis. Modern studies have shown that intestinal flora imbalance， bile acid receptor inactivation， macrophage polarization imbalance， epithelial-mesenchymal transition， ferroptosis and other related microscopic pathological mechanisms are involved in the development and progression of ulcerative colitis. By delving into the common meaning of the classic theory of mutual interference between lucidity and turbidity in traditional Chinese medicine and modern medical pathological mechanisms， this paper summarizes the correspondence between the micropathological mechanism and the theory of mutual interference between lucidity and turbidity in the regulation and mamagement of ulcerative colitis. The combined use of sweet and warm medicinal materials consolidates the middle Qi and activates Qi circulation， thus ascending lucidity and descending turbidity. The combined use of pungent medicinal materials for dispersing and bitter medicinal materials for descending simultaneously raises warm and clear Qi. Wind-extinguishing medicinal materials facilitate the ascending of Qi and the opening of sweat pores. Accordingly， turbidity descends and lucidity ascends. The prescriptions incorporating these medication principles are in agreement with the therapeutic approach of following the normal flow of lucidity and turbidity. This paper clarifies the scientific connotation and micropathologic mechanism of ulcerative colitis from the perspective of mutual interference between lucidity and turbidity， providing new theories and prescriptions for the clinical diagnosis， treatment， and prevention of ulcerative colitis.

The legal and regulatory system for the import of blood products in China has undergone a three-stage evolution of"safety first,demand-driven and standard upgrading",ultimately forming a dual control framework that centers on infectious disease prevention and control as well as quality approval.While the current policy effectively ensures biosafety,it also faces several deep-seated contradictions.These include the worsening imbalance between supply and demand,limited access to clinically needed blood products,and insufficient alignment with international standards.Moreover,strict regulation has also constrained technological innovation and market diversification.To address these challenges,it is suggested to establish a synergy mechanism that integrates a"clinical urgent need list,"hierarchical supervision,and mutual recognition of Good Manufacturing Practice(GMP).By implementing dynamic access,risk classification management,and international certification mutual recognition,it is possible to achieve compatible development between the safety baseline and medical accessibility.

Blood products play a pivotal role in modern medical treatment and healthcare system,and the clinical demand in China continues to grow.However,there is a significant supply gap for raw plasma domestically,with over 60％of human albumin relying on imports.The regulatory framework for imported blood products in China has undergone multiple rounds of adjustments,establishing a comprehensive lifecycle oversight system centered around the《Law of the People's Republic of China on the Administration of Drugs》and the《Measures for the Administration of Batch Release of Biological Products》.While ensuring safety,this framework has also led to issues such as insufficient clinical supply and elevated corporate costs because of stringent market access requirements,complex approval procedures,and tariff barriers.Specifically,import market access barriers have imposed a'dual-certification'burden,and tariff barriers have increased the costs of some products,exacerbating the financial burden on patients.In response to these challenges,it is recommended to establish an interdepartmental information-sharing platform,promote mutual recognition of international quality standards,form a rapid approval team for urgently needed medications,and reduce or exempt tariffs for clinically critical products.

The legal and regulatory system for the import of blood products in China has undergone a three-stage evolution of"safety first,demand-driven and standard upgrading",ultimately forming a dual control framework that centers on infectious disease prevention and control as well as quality approval.While the current policy effectively ensures biosafety,it also faces several deep-seated contradictions.These include the worsening imbalance between supply and demand,limited access to clinically needed blood products,and insufficient alignment with international standards.Moreover,strict regulation has also constrained technological innovation and market diversification.To address these challenges,it is suggested to establish a synergy mechanism that integrates a"clinical urgent need list,"hierarchical supervision,and mutual recognition of Good Manufacturing Practice(GMP).By implementing dynamic access,risk classification management,and international certification mutual recognition,it is possible to achieve compatible development between the safety baseline and medical accessibility.

Blood products play a pivotal role in modern medical treatment and healthcare system,and the clinical demand in China continues to grow.However,there is a significant supply gap for raw plasma domestically,with over 60％of human albumin relying on imports.The regulatory framework for imported blood products in China has undergone multiple rounds of adjustments,establishing a comprehensive lifecycle oversight system centered around the《Law of the People's Republic of China on the Administration of Drugs》and the《Measures for the Administration of Batch Release of Biological Products》.While ensuring safety,this framework has also led to issues such as insufficient clinical supply and elevated corporate costs because of stringent market access requirements,complex approval procedures,and tariff barriers.Specifically,import market access barriers have imposed a'dual-certification'burden,and tariff barriers have increased the costs of some products,exacerbating the financial burden on patients.In response to these challenges,it is recommended to establish an interdepartmental information-sharing platform,promote mutual recognition of international quality standards,form a rapid approval team for urgently needed medications,and reduce or exempt tariffs for clinically critical products.

Objective:To investigate the correlation between brain iron deposition and cognitive function in patients with carotid atherosclerosis stenosis (CAS) based on quantitative susceptibility mapping (QSM).Methods:This single-center prospective study was performed at the Department of Vascular Surgery, Nanjing Drum Tower Hospital from January 2022 to June 2022. Patients who met the ataxation criteria were divided into the CAS group ( n=16) and the CAS with mild cognitive impairment (CAS-MCI) group ( n=17) according to the Montreal Cognitive Assessment (MoCA) scores. All patients completed QSM imaging and whole-brain analyses were performed for absolute susceptibility values in cortical regions. Age, sex, education years, hypertension, and diabetes mellitus were included as covariates in all analyses. Partial correlation analyses were used to determine the correlation between bilateral CAS degrees and cortical susceptibility values. Further, mediation analyses were performed to determine whether and how cortical susceptibility values affect cognition in CAS patients. Receiver operating characteristic (ROC) curve analysis was also performed to evaluate the predictive worth of differential brain region susceptibility values for cognitive decline. Independent sample t test and Mann-Whitney U test was used to compare quantitative variables. The comparison of categorical variables was conducted using χ2 test, Fisher′s exact test or Wilcoxon rank sum test. Results:A total of 33 patients were included in the study, including 16 in the CAS group and 17 in the CAS-MCI group. There were 23 males and 10 females, aged (62.8±9.0) years (range: 48 to 88 years). CAS-MCI group showed higher right CAS grades ( Z=-2.037, P=0.042). Whole-brain cortical QSM analyses showed higher susceptibility values in the frontal pole ((-0.210±0.080)×10 -8vs.(-0.130±0.120)×10 -8; t=-2.187, P=0.037), superior frontal gyrus ((-0.604±0.243)×10 -8vs. (-0.428±0.203)×10 -8; t=-2.223, P=0.034), and temporal pole ((-0.081±0.115)×10 -8vs. (0.054±0.190)×10 -8; t=-2.417, P=0.022) in CAS-MCI group compared to CAS group. The susceptibility value of the frontal pole showed a positive correlation with the right CAS grade ( r=0.424, P=0.009),while a quasi-significant positive correlation with the left CAS ( r=0.313, P=0.070). The susceptibility values of the frontal and temporal poles were negatively correlated with the MoCA score (frontal pole: r=-0.391, P=0.027; temporal pole: r=-0.410, P=0.020). Mediation analysis showed the effect of right CAS on cognition was fully mediated by the susceptibility value of the frontal pole. The ROC curve revealed that the area under the curve of using hypertension combined with the susceptibility value of the frontal pole to predict cognitive decline was 0.882 (95% CI:0.763 to 0.989) with 82% of sensitivity and 83% of specificity. Conclusions:Multiple cortical regions show iron deposition in CAS-MCI patients. Right CAS plays an important role in cognitive decline, frontal pole iron deposition mediates the effect of right CAS on cognitive function. Quantified frontal pole susceptibility is useful for the diagnosis of cognitive decline in patients with CAS.

Objective:To investigate the correlation between brain iron deposition and cognitive function in patients with carotid atherosclerosis stenosis (CAS) based on quantitative susceptibility mapping (QSM).Methods:This single-center prospective study was performed at the Department of Vascular Surgery, Nanjing Drum Tower Hospital from January 2022 to June 2022. Patients who met the ataxation criteria were divided into the CAS group ( n=16) and the CAS with mild cognitive impairment (CAS-MCI) group ( n=17) according to the Montreal Cognitive Assessment (MoCA) scores. All patients completed QSM imaging and whole-brain analyses were performed for absolute susceptibility values in cortical regions. Age, sex, education years, hypertension, and diabetes mellitus were included as covariates in all analyses. Partial correlation analyses were used to determine the correlation between bilateral CAS degrees and cortical susceptibility values. Further, mediation analyses were performed to determine whether and how cortical susceptibility values affect cognition in CAS patients. Receiver operating characteristic (ROC) curve analysis was also performed to evaluate the predictive worth of differential brain region susceptibility values for cognitive decline. Independent sample t test and Mann-Whitney U test was used to compare quantitative variables. The comparison of categorical variables was conducted using χ2 test, Fisher′s exact test or Wilcoxon rank sum test. Results:A total of 33 patients were included in the study, including 16 in the CAS group and 17 in the CAS-MCI group. There were 23 males and 10 females, aged (62.8±9.0) years (range: 48 to 88 years). CAS-MCI group showed higher right CAS grades ( Z=-2.037, P=0.042). Whole-brain cortical QSM analyses showed higher susceptibility values in the frontal pole ((-0.210±0.080)×10 -8vs.(-0.130±0.120)×10 -8; t=-2.187, P=0.037), superior frontal gyrus ((-0.604±0.243)×10 -8vs. (-0.428±0.203)×10 -8; t=-2.223, P=0.034), and temporal pole ((-0.081±0.115)×10 -8vs. (0.054±0.190)×10 -8; t=-2.417, P=0.022) in CAS-MCI group compared to CAS group. The susceptibility value of the frontal pole showed a positive correlation with the right CAS grade ( r=0.424, P=0.009),while a quasi-significant positive correlation with the left CAS ( r=0.313, P=0.070). The susceptibility values of the frontal and temporal poles were negatively correlated with the MoCA score (frontal pole: r=-0.391, P=0.027; temporal pole: r=-0.410, P=0.020). Mediation analysis showed the effect of right CAS on cognition was fully mediated by the susceptibility value of the frontal pole. The ROC curve revealed that the area under the curve of using hypertension combined with the susceptibility value of the frontal pole to predict cognitive decline was 0.882 (95% CI:0.763 to 0.989) with 82% of sensitivity and 83% of specificity. Conclusions:Multiple cortical regions show iron deposition in CAS-MCI patients. Right CAS plays an important role in cognitive decline, frontal pole iron deposition mediates the effect of right CAS on cognitive function. Quantified frontal pole susceptibility is useful for the diagnosis of cognitive decline in patients with CAS.

Objective: To explore the interactions between voriconazole (VRC) and tacrolimus (Tac) in renal transplant recipients, provide dosing rationales for the clinical co-application of two drugs. Methods: Based upon to the inclusion criteria, 17 renal transplantation recipients were selected from August 2012 to December 2016. Before taking VRC, Tac was prescribed for more than 2 days and a steady blood drug concentration was obtained, Tac trough concentrations were determined after using VRC at Day 3/5/7. The pharmacokinetic changes of Tac were analyzed after combined use of VRC. Results: Among them, C₀ and C₀/D of Tac were significantly higher than those of VRC and inter-group differences were statistically significant. At Day 3, 5 and 7 of co-application, pharmacokinetic results showed that, at Day 7 of VRC dosing, Tac achieved a steady effective concentration of 3-8 μg/L. And the total reduction of Tac was 40%-100% of original dose. Conclusions In renal transplant recipients, VRC has a significant impact on Tac. Such an effect shows obvious differences between individuals because of nonlinear pharmacokinetics of VRC and path of interaction CYP3A4/CYP3A5 gene polymorphism. During co-application of VRC and Tac, drug concentration of Tac should be monitored regularly and its dosage adjusted accordingly. Individualized dosing is recommended.

Objective To study the clinical topography of lateral ligament of the rectum.MethodsDissection in the mesorectal plane was performed on cadavers of semi-pelvis sectioned in the sagittal plane. Results Ten of 14 semi-pelvises had substantial connective tissue between the mesorectum and the pelvic side wall. Eight of 10 lateral ligaments had middle rectal artery. Six of 8 middle rectal arteries run in the lateral ligament. The median height of the lateral ligament above the denticulate line was 14 mm (ranging 10～44 mm). Eight of 12 surgical cases had lateral ligament bilaterally, the remaining had lateral ligament unilaterally. Histologically the lateral ligament was composed of connective tissue. It consisted of vessel and nerve. The outer diameter of vessel in the lateral ligament was no more than 1.5 mm. Conclusions 1. The lateral ligament of the rectum presents in most people. The site and structure of lateral ligament was not constant, especially in vascular tissue. 2. Half of the cadavers have middle rectal artery. The rectal artery was tiny. Most of middle rectal artery runs in the lateral ligament. 3. The nerve in the lateral ligament was the part of rectal nerve plexus.