Study on the antitussive and expectorant activities and mechanism of platycodin D based on metabolomics method / 药学学报

In this paper, the antitussive and expectorant activity of platycodin D (PD) were studied by constructing a mouse cough induced by concentrated ammonia water and a mouse trachea phenol red excretion model. The mechanism of antitussive and expectorant effect of PD was studied by metabolomics. The animal experiment was approved by the Animal Ethics Committee of Jiangxi University of Chinese Medicine (approval number: JZLLSC-20220739). Then mice were randomly divided into the normal, model, positive drug, PD low-dose, PD medium-dose and PD high-dose group. The antitussive and expectorant effects of PD were evaluated using a cough mouse model induced by concentrated ammonia water and a mouse tracheal phenol red excretion model, respectively. UHPLC-LTQ-Orbitrap-MS was used to identify the metabolites of mouse lung tissue, and multivariate statistical analysis method of orthogonal partial least squares discriminant analysis (OPLS-DA) was used for metabolites profile analysis. The differential metabolites were screened by variable projected importance value (VIP) and t-test results. Pathways for enrichment of differentiated metabolites were analyzed using the MetaboAnalyst platform. The comparative method was applied to analyze the differences in mechanisms of PD, Deapio-platycodin D (DPD) and total platycosides fraction. The results showed that PD at different concentrations could significantly prolong (P < 0.05) the incubation period of cough mice induced by ammonia water, reduce the coughs frequency, and significantly increase (P < 0.05) the amount of phenol red excretion in phenol red excretion model mice. PD could regulate 6 metabolic pathways of phenylalanine, tyrosine and tryptophan biosynthesis, linoleic acid metabolism, phenylalanine metabolism, glycerophospholipid metabolism, and tyrosine metabolism to exert antitussive effect. It could also regulate 8 metabolic pathways of linoleic acid metabolism, glyoxylic acid and dicarboxylic acid metabolism, glycerol phospholipid metabolism, citric acid cycle and arachidonic acid metabolism to exert an expectorant effect. However, only linoleic acid metabolism and glycerophospholipid metabolism could be regulated by the PD, total platycosides fraction and DPD, which may be ascribed to the structural difference of the platycosides and the interaction between platycosides and the intestinal microbiota. Functional analysis showed that these metabolic pathways are closely related to the regulatory mechanisms of anti-inflammatory response, immune function regulation, neurotransmitter release, cell signal transduction, energy metabolism and cell apoptosis. This study shows that PD possesses good antitussive and expectorant activities. In addition, the mechanism difference of PD, total platycosides fraction and DPD imply that the apiose in PD and the interaction between PD and intestinal microbiota could exert an important effect on the antitussive and expectorant mechanism of the platycosides.

A new suberin from roots of Ephedra sinica Stapf / 药学学报

Six compounds were isolated from the roots of Ephedra sinica Stapf using various chromatographic techniques such as silica gel column chromatography, thin layer chromatography and semi-preparative HPLC. Their chemical structures were identified by analysis of physicochemical properties and spectral data, and determined as (Z)-docosanylferulate (1), (E)-docosanylferulate (2), bis (2-ethylheptyl) phythalate (3), 2,2′-oxybis (1,4-di-tert-butylbenzene) (4), diisobutyl phthalate (5), bis (2-ethylhexyl) phthalate (6). Among them, compound 1 is a new compound, compounds 2-4 were first isolated from Ephedra. A corticosterone-induced PC-12 cell injury model was used for compound activity screening. The results showed that compounds 1 and 5 significantly improved corticosterone-induced PC-12 cell injury and significantly increased 5-HT7 receptor protein expression in the cells, indicating potential antidepressant activity.

Short-term results of sleeve wrapping technique using remnant aortic wall in modified Bentall procedure / 中国胸心血管外科临床杂志

@#Objective To evaluate the short-term results of sleeve wrapping technique using remnant aortic wall in modified Bentall procedure. Methods The patients undergoing modified Bentall procedure with the remnant aortic wall as a sleeve to cover the sewing area of composite valved graft and the aortic annulus for proximal hemostasis between March 2021 and March 2022 in Shenzhen Fuwai Hospital were enrolled. Short-term results were assessed by cardiopulmonary bypass time, aortic clamping time, mechanical ventilation time, ICU stay, postoperative hospital stay, effusion drainage on the first postoperative day, left ventricular ejection fraction (LVEF), left ventricular end diastolic diameter (LVEDD), and follow-up results. Results A total of 14 patients were collected, including 12 males and 2 females, with a mean age of 55.33±10.57 years. There was no postoperative or follow-up death. Cardiopulmonary bypass time was 147.90±21.29 min, aortic clamping time was 115.70±15.23 min, mechanical ventilation time was 19.42±8.98 h, ICU stay was 99.08±49.42 h, and postoperative hospital stay was 16.33±2.74 d. Thoracic drainage volume was 333.33±91.98 mL on the first postoperative day. Only 2 patients required blood transfusion (4.5 U and 2 U, respectively). During the follow-up of 6.17±3.69 months, there was no death, no aortic or valve-related complications. There was statistical difference in the LVEDD between preoperation and before discharge after surgery (P＜0.001), and between half a year after surgery and before discharge after surgery (P＜0.001). There was a little decrease of LVEF before discharge after surgery compared with preoperative LVEF, but there was no statistical difference (P=0.219). There was no statistical difference in the LVEF half a year after operation compared with that before operation (P=1.000). Conclusion Sleeve wrapping technique using remnant aortic wall in modified Bentall procedure has good short-term results. This modification may be a simple, effective way in controlling proximal bleeding.

Effect of quercetin's anti-breast cancer depending on presence of estrogen receptor via down-regulating long non-coding RNA MALAT-1 and its mechanism / 中国药理学通报

Aim To investigate the molecular mechanism by which quercetin inhibits the malignant behavior of breast cancer cells. Methods Breast cancer cell lines MCF-7 and MB231 were used as the research models. Lentiviral transfection was employed to establish tumor cells with high expression of ERa and MAL-AT-1. The expression of MALAT-1 was assessed using RT-qPCR,and ERa expression was determined through Western blot. Subsequently, CCK-8 assay and colony formation assay were conducted to evaluate cell proliferation. PI staining and adenovirus transfection were performed to observe the inhibitory effects of quercetin on breast cancer cell proliferation. Results 17|3-es-tradiol ( E2 ) promoted the proliferation of MCF-7 breast cancer cells, while 5 jjunol L quercetin reversed the promoting effect of E2 on proliferation ( P 0. 05 ) . Quercetin had no effect on MB231 breast cancer cells. Overexpression of ERa significantly inhibited the pro-proliferative effect of E2 on MB231-ERa cells, and quercetin further suppressed this effect. Additionally , quercetin inhibited the expression of MALAT-1. However,this inhibitory effect was reversed by overexpression of MALAT-1, leading to enhanced cell proliferation , cell cycle progression, and clonal formation a-bility. Conclusions Quercetin exerts its anti-tumor effects on breast cancer cells by regulating MALAT-1, dependent on the presence of estrogen receptor. Quercetin shows potential as a therapeutic drug for breast cancer targeting the estrogen receptor.

Comparison of clinical features and outcomes of proliferative, fibrotic, and mixed subtypes of IgG4-related disease: A retrospective cohort study / 中华医学杂志(英文版)

BACKGROUND@#Immunoglobulin G4-related disease (IgG4-RD) is a recently recognized immune-mediated disorder that can affect almost any organ in the human body. IgG4-RD can be categorized into proliferative and fibrotic subtypes based on patients' clinicopathological characteristics. This study aimed to compare the clinical manifestations, laboratory findings, and treatment outcomes of IgG4-RD among different subtypes.@*METHODS@#We prospectively enrolled 622 patients with newly diagnosed IgG4-RD at Peking Union Medical College Hospital from March 2011 to August 2021. The patients were divided into three groups according to their clinicopathological characteristics: proliferative, fibrotic, and mixed subtypes. We compared demographic features, clinical manifestations, organ involvement, laboratory tests, and treatment agents across three subtypes. We then assessed the differences in treatment outcomes among 448 patients receiving glucocorticoids alone or in combination with immunosuppressants. Moreover, risk factors of relapse were revealed by applying the univariate and multivariate Cox regression analysis.@*RESULTS@#We classified the 622 patients into three groups consisting of 470 proliferative patients, 55 fibrotic patients, and 97 mixed patients, respectively. We found that gender distribution, age, disease duration, and frequency of allergy history were significantly different among subgroups. In terms of organ involvement, submandibular and lacrimal glands were frequently involved in the proliferative subtype, while retroperitoneum was the most commonly involved site in both fibrotic subtype and mixed subtype. The comparison of laboratory tests revealed that eosinophils ( P = 0.010), total IgE ( P = 0.006), high-sensitivity C-reactive protein ( P <0.001), erythrocyte sedimentation rate ( P <0.001), complement C4 ( P <0.001), IgG ( P = 0.001), IgG1 (P <0.001), IgG4 (P <0.001), and IgA ( P <0.001), at baseline were significantly different among three subtypes. Compared with proliferative and mixed subtypes, the fibrotic subtype showed the lowest rate of relapse (log-rank P = 0.014).@*CONCLUSIONS@#Our study revealed the differences in demographic characteristics, clinical manifestations, organ involvement, laboratory tests, treatment agents, and outcomes across proliferative, fibrotic, and mixed subtypes in the retrospective cohort study. Given significant differences in relapse-free survival among the three subtypes, treatment regimens, and follow-up frequency should be considered separately according to different subtypes.

Effects of transient receptor potential vanilloid 4 inhibitor HC067047 on anxiety-like behavior in mice induced by lipopolysaccharide / 解剖学报

Objective To investigate the effect of transient receptor potential vanilloid 4 (TRPV4) inhibitor HC067047 on anxiety-like behavior in mice induced by lipopolysaccharide (LPS). Methods Totally 48 male C57BL/6 mice were randomly divided into control group (NS), model group (LPS) and drug intervention group (HC + LPS). Anxiety mouse model was established by intraperitoneal injection of 0.83 mg/kg LPS. The HC + LPS group was intraperitoneally injected with HC067047 (10 mg/kg) 30 minutes before LPS injection, and the NS group and LPS group were injected with equal volume of normal saline. Open field test and social interaction experiments were used to detect anxiety-like behaviors in each group of mice; Immunohistochemical chemistry and Western blotting were used to detect the expression of TRPV4, inducible nitric oxide synthase (iNOS), neuronal nitric oxide synthase (nNOS) and endothelial nitric oxide synthase (eNOS) in the hippocampus. Results Immunohistochemical and Western blotting experiments showed that, compared with the NS group, the expression of TRPV4 in the hippocampus of the LPS group was significantly up-regulated (P<0.0001); In the open field test, compared with the NS group, the total distance (P < 0.0001), the distance in the central area (P<0.01) and the time of in the central area mice in the LPS group reduced significantly (P< 0.01). HC067047 intervention reversed the activities of LPS model mice total distance (P < 0.05), the distance of activities in the central area (P < 0.001) and the time of in the central area (P < 0.01); In the social interaction test, compared with the NS group, the interaction time the unfamiliar mice reduced significantly in LPS group (P<0.01), which was reversed by HC067047 treatment (P< 0.01); Western blotting detection revealed that the expression of hippocampal iNOS (P<0.05), nNOS (P < 0.001), and eNOS (P < 0.001) in the LPS group were significantly higher than the NS group, which reduced remarkably by HC067047 treatment (iNOS P < 0.05, nNOS P < 0.01 and eNOS P < 0.01). Conclusion Inhibiting the expression of TRPV4 can improve the anxiety-like behavior, and this process may be related to anti-oxidative stress.

Study on bioequivalence evaluation of dexamethasone acetate tablets in Chinese healthy volunteers / 中国临床药理学与治疗学

AIM: To assess the bioequivalence of oral dexamethasone acetate tablets between the test and reference formulations in healthy adult Chinese subjects on an empty stomach and after meals. METHODS: A randomized, open, single-dose, two-cycle double crossover bioequivalence study was followed. Twenty-four healthy subjects were included in the fasting group, and 32 healthy subjects were included in the postprandial group, taking 2 tablets (0.75 mg/tablet) of the test formulation (T) or 3 tablets (0.50 mg/tablet) of the reference formulation (R) per cycle for two cycles. The concentrations of dexamethasone acetate in human plasma were determined using liquid chromatography-mass spectrometry, and the pharmacokinetic parameters were calculated according to the non-atrial model using WinNonlin 8.0 software.The bioequivalence of both the test formulation and the reference formulation was evaluated. RESULTS: The pharmacokinetic parameters after oral administration of dexamethasone acetate tablets in a fasted state in subjects with the reference formulation are as follows: Tmax 1.13 (0.50, 4.00) and 1.00 (0.50, 5.00) h, AUC0-t (72.25±21.55) and (69.23±17.76) ng · mL

Research progress on experimental animal models of hyperuricemia / 中国药理学通报

Hyperuricemia is a chronic metabolic disease caused by purine metabolism disorder or uric acid excretion disorder. The experimental animal model of hyperuricemia is the basis for studying the pathological mechanism and drug treatment of hyperuricemia. This paper reviews the experimental animal models of hyperuricemia commonly used in drug research, and introduces the modeling principle, preparation methods, species selection and related detection techniques of the models, so as to provide reference for the application of such models in research.

Role and mechanism of glucagon-like peptide-1 in depression / 中国药理学通报

Glucagon-like peptide-1 (GLP-1) is a major hormone of incretin hormone and gut-brain axis, which is related to the control of energy homeostasis and the occurrence of obesity. In addition to suppressing appetite, GLP-1 has neuroprotective effects by acting on areas of the brain involved in stress response and mood regulation. Depression is a common mental disease, and GLP-1 is closely related to depression. This article reviews the role and mechanism of GLP-1 in depression.

Ethanol extract of Herpetospermum caudigerum Wall ameliorates psoriasis-like skin inflammation and promotes degradation of keratinocyte-derived ICAM-1 and CXCL9 / 中西医结合学报

OBJECTIVE@#To explore whether the ethanol extract of Herpetospermum caudigerum Wall (EHC), a Xizang medicinal plant traditionally used for treating liver diseases, can improve imiquimod-induced psoriasis-like skin inflammation.@*METHODS@#Immunohistochemistry and immunofluorescence staining were used to determine the effects of topical EHC use in vivo on the skin pathology of imiquimod-induced psoriasis in mice. The protein levels of interferon-γ (IFN-γ), tumor necrosis factor-α (TNF-α), and interleukin-17A (IL-17A) in mouse skin samples were examined using immunohistochemical staining. In vitro, IFN-γ-induced HaCaT cells with or without EHC treatment were used to evaluate the expression of keratinocyte-derived intercellular cell adhesion molecule-1 (ICAM-1) and chemokine CXC ligand 9 (CXCL9) using Western blotting and reverse transcription-quantitative polymerase chain reaction. The protein synthesis inhibitor cycloheximide and proteasome inhibitor MG132 were utilized to validate the EHC-mediated mechanism underlying degradation of ICAM-1 and CXCL9.@*RESULTS@#EHC improved inflammation in the imiquimod-induced psoriasis mouse model and reduced the levels of IFN-γ, TNF-α, and IL-17A in psoriatic lesions. Treatment with EHC also suppressed ICAM-1 and CXCL9 in epidermal keratinocytes. Further mechanistic studies revealed that EHC suppressed keratinocyte-derived ICAM-1 and CXCL9 by promoting ubiquitin-proteasome-mediated protein degradation rather than transcriptional repression. Seven primary compounds including ehletianol C, dehydrodiconiferyl alcohol, herpetrione, herpetin, herpetotriol, herpetetrone and herpetetrol were identified from the EHC using ultra-performance liquid chromatography-quadrupole-time of flight-mass spectrometry.@*CONCLUSION@#Topical application of EHC ameliorates psoriasis-like skin symptoms and improves the inflammation at the lesion sites. Please cite this article as: Zhong Y, Zhang BW, Li JT, Zeng X, Pei JX, Zhang YM, Yang YX, Li FL, Deng Y, Zhao Q. Ethanol extract of Herpetospermum caudigerum Wall ameliorates psoriasis-like skin inflammation and promotes degradation of keratinocyte-derived ICAM-1 and CXCL9. J Integr Med. 2023; 21(6): 584-592.

Hyperoxia caused intestinal metabolism disorder in mice / 中华危重病急救医学

OBJECTIVE@#To investigate the effect of hyperoxia on intestinal metabolomics in mice.@*METHODS@#Sixteen 8-week-old male C57BL/6 mice were randomly divided into hyperoxia group and control group, with 8 mice in each group. The hyperoxia group was exposed to 80% oxygen for 14 days. Mice were anesthetized and euthanized, and cecal contents were collected for untargeted metabolomics analysis by liquid chromatography-mass spectrometry (LC-MS) combined detection. Orthogonal partial least square discriminant analysis (OPLS-DA), volcano plot analysis, heat map analysis, and Kyoto Encyclopedia of Genes and Genomes (KEGG) were used to analyze the effects of hyperoxia on metabolism.@*RESULTS@#(1) OPLS-DA analysis showed that R2Y was 0.967 and Q2 was 0.796, indicating that the model was reliable. (2) Volcano plot and heat map analysis showed significant statistical differences in the expression levels of metabolites between the two groups, with 541 up-regulated metabolites, 64 down-regulated metabolites, and 907 no differences, while the elevated 5-hydroxy-L-lysine was the most significant differential metabolite induced by high oxygen. (3) KEGG pathway enrichment analysis showed that porphyrin and chlorophyll metabolism (P = 0.005), lysine degradation (P = 0.047), and aromatic compound degradation (P = 0.024) were the targets affected by hyperoxia. (4) Differential analysis of metabolic products through KEGG enrichment pathway showed that hyperoxia had a significant impact on the metabolism of porphyrin and chlorophyll, lysine, and aromatic compounds such as benzene and o-cresol.@*CONCLUSIONS@#Hyperoxia significantly induces intestinal metabolic disorders. Hyperoxia enhances the metabolism of porphyrins and chlorophyll, inhibits the degradation of lysine, and delays the degradation of aromatic compounds such as benzene and o-cresol.

Current status and thought of transcatheter mitral edge-to-edge repair in the treatment of hypertrophy cardiomyopathy / 中华外科杂志

Septal reduction therapies, which include septal myectomy and alcohol septal ablation and so on, are the current treatment strategies for patients with obstructive hypertrophic cardiomyopathy and drug-refractory symptoms. With the deepening of theoretical understanding and the rapid development of interventional therapies, some researchers have tried to perform transcatheter mitral valve edge-to-edge repair to treat high-risk patients with hypertrophic cardiomyopathy, including obstructive and non-obstructive. The reported results are relatively satisfactory, but many urgent problems need to be solved, such as the lack of data on animal experiments and large cohort studies, and the unknown medium- and long-term outcomes. However, transcatheter mitral valve edge-to-edge repair brings new ideas for the diagnosis and treatment of patients with hypertrophic cardiomyopathy. On one hand, it can be used as a monotherapy, on the other hand, it can be combined with novel molecular targeted drug therapy or emerging minimally invasive surgical procedures targeting hypertrophic ventricular septum, which deserves our further attention and exploratory research.

Advances in applications of molecular dynamics simulation techniques to the research of self-assembled nano-drug delivery systems / 药学学报

Molecular dynamics simulation technology relies on Newtonian mechanics to simulate the motion of molecular system of the real system by computer simulation. It has been used in the research of self-assembly processes illustration and macroscopic performance prediction of self-assembly nano-drug delivery systems (NDDS) in recent years, which contributes to the facilitation and accurate design of preparations. In this review, the definitions, catalogues, and the modules of molecular dynamics simulation techniques are introduced, and the current status of their applications are summarized in the acquisition and analysis of microscale information, such as particle size, morphology, the formation of microdomains, and molecule distribution of the self-assembly NDDS and the prediction of their macroscale performances, including stability, drug loading capacity, drug release kinetics and transmembrane properties. Moreover, the existing applications of the molecular dynamic simulation technology in the formulation prediction of self-assembled NDDS were also summarized. It is expected that the new strategies will promote the prediction of NDDS formulation and lay a theoretical foundation for an appropriate approach in NDDS studies and a reference for the wider application of molecular dynamics simulation technology in pharmaceutics.

Association of Multimorbidity with Health Outcomes in the Chinese Middle-aged and Elderly Population / 中山大学学报(医学科学版)

ObjectiveTo analyze the multimorbidity and comorbid disease patterns among middle-aged and older adults aged 50 years and above in China and to study the prevalence， regional distribution， and relationship with health-related outcomes of major comorbid disease patterns. MethodsThe fourth national follow-up data of the China Health and Retirement Longitudinal Study （CHARLS） 2018 was used， including 13 774 respondents aged 50 years and older from 28 provincial units. We analyzed 14 patient-reported physician-diagnosed chronic diseases and multimorbidity combinations， reported prevalence， composition ratio， and regional distribution. Differences in health loss and risk factors between high morbidity groups were analyzed using chi-square tests and logistic regression. ResultsThe prevalence of multimorbidities among participants was 57.3%. The single disease with high prevalence included arthritis/rheumatism （6.47%）， hypertension （5.41%）， and gastric and digestive disorders （4.17%）； the binary multimorbidity combinations were arthritis + digestive disorders （3.06%）， arthritis + hypertension （2.61%）， and hypertension + hyperlipidemia （1.39%）； the triadic combinations were hypertension + digestive disorders + joint disorders （1.00%）. The prevalence of multimorbidity varied greatly between provinces， showing the characteristics of high in the west and north but low in the east and south China. Significant differences in the health loss caused by different multimorbidity combinations were noted， with the highest ADL loss （28.51%） and depression （77.68%） caused by the arthritis multimorbidity combinations （P<0.01）. The number of chronic diseases （OR=6.71， P<0.01）， age （OR=1.96， P<0.01）， and heavy alcohol consumption were comorbid risk factors for physical and mental health； exercise （OR=0.44， P<0.01） and sleep （OR=0.89， P<0.01） were protective factors for physical and mental health， and smoking cessation （OR=0.76， P<0.01） contributed to the relief of anxiety. ConclusionsThe prevalence of comorbid patterns showed a high clustering trend， and the health loss caused by major patterns varied greatly. Relevant health intervention strategies should prioritize the major multimorbidity combinations for targeted disease management and rehabilitation services.

Surgical Safety of Elderly Hospitalized Patients Stratified by Age in General Surgery / 中国医学科学院学报

Objective To compare the surgical safety of elderly hospitalized patients in different age groups undergoing general surgery,and provide references for preoperative evaluation and treatment decision-making.Methods The inpatients ≥ 60 years old in the department of general surgery were selected from a national multi-center survey conducted from January to June in 2015 and from January to June in 2016.The patient characteristics and postoperative outcomes were described,and the risk factors for adverse postoperative outcomes of patients in different age groups were explored.Results The elderly patients (≥75 years old) accounted for 17.33%.The non-elderly patient (< 75 years old) group and the elderly patient (≥75 years old) group had significant differences in the proportions of patients with three or more chronical diseases (13.18% vs.5.36%,P<0.001),emergency surgery (16.64% vs.7.62%,P<0.001),American Society of Anesthesiologists score≥3 (48.68% vs.27.28%,P<0.001),and postoperative return to the intensive care unit(33.64% vs.12.00%,P<0.001).The occurrence of postoperative infectious complications showed no significant difference between the two age groups (7.29% vs.6.40%,P=0.410),while severe complications differed between the two groups (6.51% vs.2.60%,P<0.001).Besides,emergency surgery was a common independent risk factor for the two age groups.Conclusions Advanced age is not a contraindication to surgery of elderly patients.With consideration to patient's physical conditions and available surgical resources,elderly patients can still benefit from surgery.

Value Pursuit in Medical Ethics Education: A Dewey Style Understanding / 中国医学伦理学

In medical ethics education, there are two different research and education paths: medical ethics and medical anthropology. The former focuses on using theories and methods such as utilitarianism and contract theory, while the latter focuses on using theories and methods such as narrative medicine and emotion theory. The two paths are not closely related, resulting in the weak ecological structure of medical ethics education. Drawing on Dewey’s value education theory and based on his theory of human nature, this paper integrated the values of life and human nature into a coordinated and consistent goal of medical ethics education, used the two paths of "medicine-life value-life value education" and "medicine-human nature value-human nature value education" to conduct detailed argumentation, further grasped the concept of value philosophy, so as to provide an opportunity for future exploration of the integration of medical moral education and medical aesthetic education.

Current Status and Ethical Considerations of Data Collection and Application in Rare Disease Research / 中国医学伦理学

The research on rare diseases in China started relatively late, with scattered research resources and weak data foundation in epidemiology, diagnosis and treatment, and medication, which hinders its research progress. The rare disease data system is the foundation of rare disease research, and the ethical constraint on rare disease data collection is not only the protection of rare disease population, but also the need for the safety and quality of rare disease data. By analyzing and prospecting the current status of the construction of rare disease data systems, including the data of epidemiology, clinical diagnosis and treatment, drug trials, and follow-up to provide reference for the improvement of rare disease data systems. This paper explored the ethical issues to be followed in the process of rare disease data collection from the perspectives of justice, no harm, respect, sharing, and legalization, so as to improve the standardization of rare disease data collection and the understanding of data ethical review.

Rare Manifestations of Common Diseases: Middle-Aged Male Polyuria-Headache-Inflammatory Granulomatous Lesions / 罕见病研究

A middle-aged man was presented with poor appetite, polyuria, polydrpsia, and headache. A sellar mass was found, along with total pituitary hypofunction and visual field defect. A biopsy of the lesion via the trans-sphenoidal approach showed inflammatory changes and granuloma formation. However, repeated cerebrospinal fluid and pathogenic examination of the pathological tissue showed no positive indications. The initial diagnosis considered autoimmune hypophysitis, and treatment of glucocorticoids combined with immunosuppressants was administered, which led to a temporary shrinkage of the lesion, but it gradually enlarged subsequently. After multidisciplinary discussion, a high possibility of pituitary tuberculosis infection was decided upon. After standardized anti-tuberculosis treatment was initiated, the lesion reduced noticeably and the patient′s condition improved. Pituitary tuberculosis infection is incredibly rare and extremely easy to misdiagnose. This case was diagnosed and treated in a timely and effective manner through a multidisciplinary approach, highlighting the importance of such an approach in dealing with rare diseases.

Characteristics of whole blood donors from 26 blood stations before and after the outbreak of COVID-19:a multicenter study / 中国输血杂志

【Objective】 To analyze the basic characteristics of whole blood donors from blood stations before and after the outbreak of COVID-19. 【Methods】 After excluding invalid data, data related to the basic characteristics of whole blood donors collected from 26 blood stations in China during 2018 to 2021 were statistically analyzed, including the trend of total whole blood donors, the number of repeated blood donors, the frequency of blood donation, the average age of donors and the recruitment of first-time blood donors. 【Results】 Affected by the epidemic, 8 out of 14 indicators were with large variations, accounting for 57%. The overall growth rate of total whole blood donors during the epidemic was higher than before the epidemic (P<0.05).The number of repeated blood donors has shown an increased trend, with a higher number during the epidemic than before (P<0.05). The frequency of blood donation was lower during the epidemic than before(P<0.05).Average ages of blood donors and female blood donors fluctuated widely during the epidemic, both higher than those before the epidemic(P<0.05).The donation rate of first-time blood donors <25 years old and ≥25 years old varied widely and irregularly during the epidemic (both P<0.05). The percentage of first-time blood donors fluctuated irregularly during the epidemic, with overall percentage lower than that before the epidemic(P<0.05). 【Conclusion】 Whole blood donors from 26 blood stations increased after the outbreak of COVID-19, and some indicators in certain areas showed significant fluctuations during the epidemic.

Impact of COVID-19 epidemic on inventory of red blood cells in local and municipal blood stations in China / 中国输血杂志

【Objective】 To evaluate and analyze the impact of COVID-19 epidemic on inventory of red blood cells (RBCs)in local and municipal blood stations in China, and to provide reference for the management of public health emergencies. 【Methods】 Relevant data from 2018 to 2021 were collected, and the differences in the volume of qualified RBCs, the usage efficiency of inventory RBCs, the average daily distribution of RBCs,the blood distribution rate of RBCs prepared by 400 mL whole blood, the difference in the average storage days of RBCs at the time of distribution, the average daily inventory of RBCs and the time of the average daily inventory of RBCs to maintain the distribution in 24 local and municipal blood stations in China during the COVID-19 epidemic and non-epidemic periods were retrospectively analyzed. 【Results】 Compared with non-epidemic periods, the volume of qualified RBCs [(117 525.979 ±52 203.175)U] and the average daily distribution of RBCs [( 156. 468 ± 70. 186) U ] increased significantly, but the usage efficiency of inventory RBCs decreased(97.24%±0.51%) significantly (P0.5). 【Conclusion】 During the COVID-19 epidemic, the inventory management of RBCs operated well, the overall inventory remained relatively stable, the stock composition and storage period showed no significant change.