1.Randomized, double-blind, parallel-controlled, multicenter, equivalence clinical trial of Jiuwei Xifeng Granules(Os Draconis replaced by Ostreae Concha) for treating tic disorder in children.
Qiu-Han CAI ; Cheng-Liang ZHONG ; Si-Yuan HU ; Xin-Min LI ; Zhi-Chun XU ; Hui CHEN ; Ying HUA ; Jun-Hong WANG ; Ji-Hong TANG ; Bing-Xiang MA ; Xiu-Xia WANG ; Ai-Zhen WANG ; Meng-Qing WANG ; Wei ZHANG ; Chun WANG ; Yi-Qun TENG ; Yi-Hui SHAN ; Sheng-Xuan GUO
China Journal of Chinese Materia Medica 2025;50(6):1699-1705
Jiuwei Xifeng Granules have become a Chinese patent medicine in the market. Because the formula contains Os Draconis, a top-level protected fossil of ancient organisms, the formula was to be improved by replacing Os Draconis with Ostreae Concha. To evaluate whether the improved formula has the same effectiveness and safety as the original formula, a randomized, double-blind, parallel-controlled, equivalence clinical trial was conducted. This study enrolled 288 tic disorder(TD) of children and assigned them into two groups in 1∶1. The treatment group and control group took the modified formula and original formula, respectively. The treatment lasted for 6 weeks, and follow-up visits were conducted at weeks 2, 4, and 6. The primary efficacy endpoint was the difference in Yale global tic severity scale(YGTSS)-total tic severity(TTS) score from baseline after 6 weeks of treatment. The results showed that after 6 weeks of treatment, the declines in YGTSS-TSS score showed no statistically significant difference between the two groups. The difference in YGTSS-TSS score(treatment group-control group) and the 95%CI of the full analysis set(FAS) were-0.17[-1.42, 1.08] and those of per-protocol set(PPS) were 0.29[-0.97, 1.56], which were within the equivalence boundary [-3, 3]. The equivalence test was therefore concluded. The two groups showed no significant differences in the secondary efficacy endpoints of effective rate for TD, total score and factor scores of YGTSS, clinical global impressions-severity(CGI-S) score, traditional Chinese medicine(TCM) response rate, or symptom disappearance rate, and thus a complete evidence chain with the primary outcome was formed. A total of 6 adverse reactions were reported, including 4(2.82%) cases in the treatment group and 2(1.41%) cases in the control group, which showed no statistically significant difference between the two groups. No serious suspected unexpected adverse reactions were reported, and no laboratory test results indicated serious clinically significant abnormalities. The results support the replacement of Os Draconis by Ostreae Concha in the original formula, and the efficacy and safety of the modified formula are consistent with those of the original formula.
Adolescent
;
Child
;
Child, Preschool
;
Female
;
Humans
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Male
;
Double-Blind Method
;
Drugs, Chinese Herbal/therapeutic use*
;
Tic Disorders/drug therapy*
;
Treatment Outcome
2.Rhodiolae Crenulatae Radix et Rhizoma protects brain microvascular endothelial cells from ischemia and hypoxia injury by regulating PI3K/AKT/GSK3β pathway.
Li TANG ; Qiu-Yue YANG ; Hong-Fa CHENG ; Ya-Hui XIE ; Qiu-Xia ZHANG
China Journal of Chinese Materia Medica 2025;50(11):3127-3136
This study elucidates the mechanism of Rhodiolae Crenulatae Radix et Rhizoma(RCRR) in protecting brain microvascular endothelial cells from oxygen-glucose deprivation(OGD) injury and reveals the modern pharmacological mechanism of RCRR's traditional use in nourishing Qi and promoting blood circulation to protect endothelial cells. The scratch assay was employed to assess the migratory capacity of endothelial cells. Immunofluorescence and Western blot techniques were employed to assess the protein expression of tight junction proteins zonula occludens-1(ZO-1), occludin, claudin-5, and proteins of the phosphoinositide 3-kinase(PI3K)/protein kinase B(AKT)/glycogen synthase kinase-3beta(GSK3β) pathway. The results demonstrated that 63 bioactive components and 125 potential core targets of RCRR were identified from the ETCM, TCMBank, and SwissTargetPrediction databases, as well as from the literature. A total of 1 708 brain microvascular endothelial cell-related targets were identified from the GeneCards and OMIM databases, and 52 targets were obtained by intersecting drug components with cell targets. The protein-protein interaction(PPI) network analysis revealed that AKT1, epidermal growth factor receptor(EGFR), matrix metalloproteinase 9(MMP9), estrogen receptor 1(ESR1), proto-oncogene tyrosine-protein kinase(SRC), peroxisome proliferator-activated receptor gamma(PPARG), GSK3β, and matrix metalloproteinase 2(MMP2) were considered hub genes. The KEGG enrichment analysis identified the PI3K/AKT pathway as the primary signaling pathway. Cell experiments demonstrated that RCRR-containing serum could enhance the migratory capacity of brain microvascular endothelial cells and the expression of tight junction proteins following OGD injury, which may be associated with the downregulation of the PI3K/AKT/GSK3β pathway. This study elucidates the pharmacological mechanism of RCRR in protecting brain microvascular endothelial cells through network pharmacology, characterized by multiple components and targets. These findings were validated through in vitro experiments and provide important ideas and references for further research into the molecular mechanisms of RCRR in protecting brain microvascular endothelial cells.
Endothelial Cells/cytology*
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Glycogen Synthase Kinase 3 beta/genetics*
;
Proto-Oncogene Proteins c-akt/genetics*
;
Drugs, Chinese Herbal/pharmacology*
;
Phosphatidylinositol 3-Kinases/genetics*
;
Signal Transduction/drug effects*
;
Brain/metabolism*
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Humans
;
Animals
;
Rhizome/chemistry*
;
Microvessels/metabolism*
;
Brain Ischemia/drug therapy*
3.Clinical Analysis of Extranodal NK/T-Cell Lymphoma, Nasal Type with Skin Lesions as Initial Symptom.
Ping CHENG ; Yi LI ; Xia MAO ; Qiu-Xiang WANG ; Lan-Lan WANG ; Jun GUAN ; Ying ZHOU ; Hui CHENG
Journal of Experimental Hematology 2025;33(2):416-422
OBJECTIVE:
To investigate the clinical features, treatment and prognosis of extranodal NK/T-cell lymphoma, nasal type (ENKTL) with skin lesions as initial symptom.
METHODS:
The clinical data of 11 ENKTL patients with skin lesions as initial symptom were retrospectively analyzed from August 2016 to January 2023 in Wuhan First Hospital and Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology.
RESULTS:
Among the 11 patients, there were 6 males and 5 females, with a median age of 50(32-80) years. All patients had different forms of skin lesions as initial clinical symptom, including rash, ulcerative mass, painful skin nodules, infiltrating macula, etc. Most of the skin lesions were involved in the limbs and trunk but also appeared in the lower limbs alone. Five patients had hemophagocytic lymphohistiocytosis (HLH) at initial diagnosis, and 8 patients had B symptoms. All patients were diagnosed with advanced clinical staging (Lugano staging IV), and classified as high risk (PINK-E score ≥3). Immunohistochemical examination revealed that the positive rates of CD56 and EBER were both 100%, and the median Ki-67 index was 75%(50%-80%). Plasma EBV-DNA tests were all positive (≥5×102 copies/ml). Most of the induction chemotherapy regimens were combination chemotherapy (MESA, p-Gemox, SMILE) containing pegaspargase or L-asparaginase, or combined with PD-1 monoclonal immunotherapy, or HLH regimens (HLH-04 regimen, L-DEP). The median follow-up time and overall survival (OS) time were both 4.5(0.5-27) months. During the follow-up period, all 8 patients who did not receive autologous hematopoietic stem cell transplantation (ASCT) died, most of whom died of rapid disease progression. Three patients received ASCT, one died of central nervous system recurrence after transplantation, and two survived. The OS of three patients who underwent ASCT was 21, 27, and 19 months, and PFS was 11, 20, and 13 months, respectively. The plasma EBV-DNA copy number was monitored irregularly after transplantation, and the load of EBV was consistent with the changes of the disease.
CONCLUSIONS
Early clinical symptoms of ENKTL patients with skin lesions as initial symptom are more atypical, and early diagnosis is particularly difficult. The disease progresses rapidly and the prognosis is poor. There is still no uniform standard for the best treatment strategy. The survival of patients can be significantly prolonged by applying ASCT as soon as possible after complete remission obtained by high-dose induction chemotherapy.
Humans
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Male
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Female
;
Lymphoma, Extranodal NK-T-Cell/diagnosis*
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Middle Aged
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Adult
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Retrospective Studies
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Aged
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Prognosis
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Aged, 80 and over
4.Significance of IgH Gene Rearrangement in Surveillance of Minimal Residual Disease after Autologous Hematopoietic Stem Cell Trans-plantation in Multiple Myeloma
Ping CHENG ; Jun GUAN ; Ying ZHOU ; Qiu-Xiang WANG ; Lan-Lan WANG ; Ting ZHANG ; Hui CHENG
Journal of Experimental Hematology 2024;32(1):164-170
Objective:To investigate the value of immunoglobulin heavy chain(IgH)gene rearrangement in monitoring minimal residual disease(MRD)in multiple myeloma(MM)received autologous hematopoietic stem cell transplantation(auto-HSCT).Methods:The clinical data of 26 MM patients who received auto-HSCT in the Department of Hematology,Wuhan First Hospital from 2018 to 2022 were collected.IgH rearrangement was detected by multiplex PCR combined with capillary electrophoresis fragment analysis to evaluate minimal residual disease(MRD),and the outcome of the disease was analyzed statistically.Results:Among the 26 MM patients,18 were males and 8 were females,with a median age of 59(41-70)years.The median follow-up time after transplantation was 33(7-52)months.Compared with the IgH rearrangement negative group(n=17),the proportion of CR and sCR of patients with IgH rearrangement positive in bone marrow samples before auto-HSCT at 3 months after transplantation was lower(1/9 vs 14/17),and the duration of remission(DOR)after transplantation was shorter(10.78±4.35 vs 15.88±5.22 months),with statistically significant difference in DOR between the two groups(P<0.05).Compared with IgH rearrangement negative group(n=21),the proportion of CR and sCR of patients with positive IgH rearrangement results from peripheral blood stem cell collection at 3 months after transplantation was lower(0/5 vs 15/21),the duration of remission(DOR)after transplantation was shorter(9.60±4.83 vs 15.19±5.11 months),and the difference in DOR between the two groups was statistically significant(P<0.05).During the follow-up period,5 patients(5/9)with positive IgH rearrangement results in bone marrow specimens died,and all patients with negative IgH rearrangement results survived.Four patients(4/5)with positive IgH rearrangement results by peripheral blood stem cell samples died,while one patient(1/21)with negative IgH rearrangement results died.In both bone marrow and peripheral blood stem cell samples,the survival time of IgH rearrangement-positive patients after transplantation was shorter than that of IgH rearrangement-negative patients(P<0.05).Logistic regression analysis showed that gender,disease stage,the proportion of bone marrow smear plasma cells at initial diagnosis,stem cell mobilization plan,efficacy evaluation before transplantation(≥ CR and<CR),and CD34+cell count had no effect on IgH rearrangement results of stem cell collection(P>0.05).Conclusion:By detecting IgH rearrangement of MM patients receiving auto-HSCT,the depth of MRD can be further evaluated,which has a certain guiding significance for the efficacy and prognosis of the disease.
5.Optimisation of CUBIC tissue clearing technology based on perfusion methods
Chuan-Hui GONG ; Jia-Yi QIU ; Ke-Xin YIN ; Ji-Ru ZHANG ; Cheng HE ; Ye YUAN ; Guang-Ming LÜ
Acta Anatomica Sinica 2024;55(3):363-370
Objective In order to shorten the transparency time of clear,unobstructed brain imaging cocktails and computational analysis(CUBIC),improve the transparency efficiency,and explore the possibility of applying hydrophilic tissue transparency technique,this study was conducted to optimize the perfusion of CUBIC technique and compare it with four hydrophilic tissue clearing method in terms of tissue transparency effect,transparency time,area change,volume change and adeno-associated virus(AAV)fluorescence retention.Methods Brain,liver,spleen and kidney of 6 adult Institute of Cancer Research(ICR)mice were subjected to clearing treatment by SeeDB,FRUIT,ScaleS and CUBIC method,respectively.The area and gray value of the samples were measured by Image J 1.8.0,and the volume before and after transparency was measured by drainage method to compare the transparency effect,time and size deformation of each group.Perfusion optimization of the CUBIC was performed by improving the perfusion rate with the optimal perfusion dose,each group of the experimental sample size was 6.Fluorescence preservation by different techniques was evaluated by injecting AAV in the motor cortex of 16 adult mice and taking the cervical spinal segments for transparency treatment after four weeks,and the fluorescence photographs were measured by Image J 1.8.0 to measure the mean fluorescent intensity.Results The optimal perfusion rate and dose of CUBIC was 15 ml/min and 200 ml respectively.For transparency ability and speed,the perfusion CUBIC had the lowest mean gray value and took the shortest time,while CUBIC consumed the longest time,and SeeDB,FRUIT,and ScaleS did not show good transparency ability.In terms of area and volume changes,several techniques showed different degrees of expansion after transparency of tissues or organs.In terms of fluorescence retention,perfusion CUBIC showed the best retention of green fluorescent protein(GFP)fluorescence signal,followed by CUBIC,ScaleS,FRUIT,and SeeDB.Conclusion Perfusion CUBIC technique shows the best tissue transparency,the shortest transparency time,and the most AAV fluorescence retention compared with other techniques.
6.Establishment and evaluation of a rapid PCR-colloidal gold test strip method for the detection of Fritillaria ussuriensis
Yu-he MA ; Cong-hui SHANG ; Qiu-he MA ; Tao LI ; Yue LIU ; Bei-zhen PAN ; Li-jun GAO ; Ming-cheng LI ; Wei XIA ; Yong-mei QU
Acta Pharmaceutica Sinica 2024;59(6):1773-1778
This study design of specific identification primers for the ITS2 sequence of
7.Mechanism of inflammatory microecological response to TAS2R14/SIgA/TSLP in regulating epithelial cell barrier in cold asthma rats through lung-gut axis by using Shegan Mahuang Decoction and bitter and purging Chinese herbs.
Ya-Mei YUAN ; Wei-Dong YE ; Yue CHENG ; Qiu-Hui LI ; Jia-Xin LIU ; Jia-le QIAO ; Kun WANG ; Xiang-Ming FANG
China Journal of Chinese Materia Medica 2024;49(24):6713-6723
This study aimed to investigate the mechanism by which Shegan Mahuang Decoction(SGMH) and its bitter Chinese herbs(BCHs) regulated the lung-gut axis through the bitter taste receptor 14(TAS2R14)/secretory immunoglobulin A(SIgA)/thymic stromal lymphopoietin(TSLP) to intervene in the epithelial cell barrier of cold asthma rats. Fifty SD rats were randomly divided into the following five groups: normal group, model group, dexamethasone group, SGMH group, and BCHs group. A 10% ovalbumin(OVA) solution was used to sensitize the rats via subcutaneous injection on both sides of the abdomen and groin, combined with 2% OVA atomization and cold(2-4 ℃) stimulation to induce a cold asthma model in rats. The SGMH, BCHs, and dexamethasone groups were given corresponding treatments by gavage and nebulization, while the normal and model groups received normal saline by gavage and nebulization. After the final stimulation, pathological changes in the lung and intestine tissues were observed using hematoxylin-eosin(HE) and periodic acid-Schiff(PAS) staining. Lung function was assessed by measuring the ratio of forced expiratory volume in the first second to forced vital capacity(FEV1/FVC), the ratio of the average flow rate at 25%-75% of forced vital capacity to foned vital capacity(FEV25%-75%/FVC), the peak expiratory flow(PEF), and pulmonary resistance(RL). The levels of IL-4, IL-5, IL-13, and TNF-α in serum, and sIgA in serum, intestinal, and bronchial mucosa were detected by enzyme-linked immunosorbent assay(ELISA). The expression of TAS2R14 protein in lung tissue was detected by Western blot(WB). The content of short-chain fatty acids(SCFAs) in rat feces was determined by gas chromatography-mass spectrometry(GC-MS). The effect of TAS2R14/TSLP on lipopolysaccharide(LPS)-induced inflammation in epithelial cells in the BCHs group was observed, and the expression of TAS2R14 and TSLP in cells was detected by WB. Compared with the normal group, the model group showed reduced water intake, diet, and body weight, increased infiltration of inflammatory cells in the lung and intestinal tissues, goblet cell hyperplasia, significantly decreased FEV1/FVC, FEV25%-75%/FVC, and PEF, and significantly increased RL. Moreover, serum levels of IL-4, IL-5, IL-13, and TNF-α were elevated, and sIgA levels in serum, intestine, and bronchial mucosa were significantly decreased. TAS2R14 expression in lung tissues was inhibited, and the content of acetic acid, propionic acid, and butyric acid in feces was significantly reduced. In the LPS group, TSLP expression increased, and TAS2R14 expression decreased. Compared with the model group, the general condition of rats in the SGMH and BCHs groups improved, with reduced infiltration of inflammatory cells and goblet cell hyperplasia in the lung and intestinal tissues. FEV1/FVC, FEV25%-75%/FVC, and PEF significantly increased, and RL significantly decreased. Serum levels of IL-4, IL-5, IL-13, and TNF-α decreased, while sIgA levels in serum, intestine, and bronchial mucosa significantly increased, and TAS2R14 expression was activated in lung and intestinal tissues. The content of acetic acid, propionic acid, and butyric acid in feces significantly increased. Compared with the model group, the BCHs group and the agonist group showed inhibited TSLP expression and increased TAS2R14 expression. The results showed that both SGMH and BCHs could reduce lung and intestinal inflammatory reactions, improve lung function, and regulate the content of intestinal SCFAs in asthmatic rats. There was no significant difference in TAS2R14 protein expression between the SGMH and BCHs groups, indicating that the clinical efficacy of BCHs may be related to the activation of the bitter receptor TAS2R14 and the regulation of immune inflammatory mediators in lung and intestinal epithelial cells.
Animals
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Drugs, Chinese Herbal/administration & dosage*
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Rats
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Rats, Sprague-Dawley
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Lung/metabolism*
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Asthma/metabolism*
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Cytokines/immunology*
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Male
;
Receptors, G-Protein-Coupled/immunology*
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Epithelial Cells/metabolism*
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Thymic Stromal Lymphopoietin
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Immunoglobulin A, Secretory/genetics*
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Humans
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Cold Temperature
8.Clinical comprehensive evaluation of recombinant Mycobacterium tuberculosis fusion protein
Xiaofeng NI ; Sha DIAO ; Siyi HE ; Xuefeng JIAO ; Xiao CHENG ; Zhe CHEN ; Zheng LIU ; Linan ZENG ; Deying KANG ; Bin WU ; Chaomin WAN ; Binwu YING ; Hui ZHANG ; Rongsheng ZHAO ; Liyan MIAO ; Zhuo WANG ; Xiaoyu LI ; Maobai LIU ; Benzhi CAI ; Feng QIU ; Feng SUN ; Naihui CHU ; Minggui LIN ; Wei SHA ; Lingli ZHANG
China Pharmacy 2023;34(4):391-396
OBJECTIVE To evaluate the effectiveness, safety, economy, innovation, suitability and accessibility of recombinant Mycobacterium tuberculosis fusion protein (EC), and to provide evidence for selecting skin detection methods for tuberculosis infection diagnosis and auxiliary diagnosis of tuberculosis. METHODS The effectiveness and safety of EC compared with purified protein derivative of tuberculin (TB-PPD) were analyzed by the method of systematic review. Cost minimization analysis, cost-effectiveness analysis and cost-utility analysis were used to evaluate the short-term economy of EC compared with TB-PPD, and cost-utility analysis was used to evaluate the long-term economy. The evaluation dimensions of innovation, suitability and accessibility were determined by systematic review and improved Delphi expert consultation, and the comprehensive score of EC and TB-PPD in each dimension were calculated by the weight of each indicator. RESULTS The scores of effectiveness, safety, economy, innovation and suitability of EC were all higher than those of TB-PPD. The affordability scores of the two drugs were consistent, while the availability score of EC was lower than those of TB-PPD. After considering dimensions and index weight, the scores of effectiveness, safety, economy, innovation, suitability, accessibility and the comprehensive score of EC were all higher than those of TB-PPD. CONCLUSIONS Compared with TB-PPD, EC performs better in all dimensions of effectiveness, safety, economy, innovation, suitability and accessibility. However, it is worth noting that EC should further improve its availability in the dimension of accessibility.
9.Evaluation of Renal Impairment in Patients with Diabetic Kidney Disease by Integrated Chinese and Western Medicine.
Yi-Lun QU ; Zhe-Yi DONG ; Hai-Mei CHENG ; Qian LIU ; Qian WANG ; Hong-Tao YANG ; Yong-Hui MAO ; Ji-Jun LI ; Hong-Fang LIU ; Yan-Qiu GENG ; Wen HUANG ; Wen-Hu LIU ; Hui-di XIE ; Fei PENG ; Shuang LI ; Shuang-Shuang JIANG ; Wei-Zhen LI ; Shu-Wei DUAN ; Zhe FENG ; Wei-Guang ZHANG ; Yu-Ning LIU ; Jin-Zhou TIAN ; Xiang-Mei CHEN
Chinese journal of integrative medicine 2023;29(4):308-315
OBJECTIVE:
To investigate the factors related to renal impairment in patients with diabetic kidney disease (DKD) from the perspective of integrated Chinese and Western medicine.
METHODS:
Totally 492 patients with DKD in 8 Chinese hospitals from October 2017 to July 2019 were included. According to Kidney Disease Improving Global Outcomes (KDIGO) staging guidelines, patients were divided into a chronic kidney disease (CKD) 1-3 group and a CKD 4-5 group. Clinical data were collected, and logistic regression was used to analyze the factors related to different CKD stages in DKD patients.
RESULTS:
Demographically, male was a factor related to increased CKD staging in patients with DKD (OR=3.100, P=0.002). In clinical characteristics, course of diabetes >60 months (OR=3.562, P=0.010), anemia (OR=4.176, P<0.001), hyperuricemia (OR=3.352, P<0.001), massive albuminuria (OR=4.058, P=0.002), atherosclerosis (OR=2.153, P=0.007) and blood deficiency syndrome (OR=1.945, P=0.020) were factors related to increased CKD staging in patients with DKD.
CONCLUSIONS
Male, course of diabetes >60 months, anemia, hyperuricemia, massive proteinuria, atherosclerosis, and blood deficiency syndrome might indicate more severe degree of renal function damage in patients with DKD. (Registration No. NCT03865914).
Humans
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Male
;
Diabetes Mellitus, Type 2
;
Diabetic Nephropathies
;
Hyperuricemia
;
Kidney
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Proteinuria
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Renal Insufficiency, Chronic/complications*
10.Multicenter epidemiological characteristics of Mycoplasma pneumoniae infection in children in Hainan Province, 2012-2020
LIAO Shang-qiu ; TAN Hui ; ZHANG Xue-mei ; WAN Ke-cheng ; LU Xiong-fu ; ZHU Hou-cai ; YANG Zi-jiang ; ZHANG Yu-qing ; LIU Jia-yu ; TAN Xiao-yu ; DU Yu-ang ; BAI En-xu ; CAI Si-ming ; HUO Kai-ming
China Tropical Medicine 2023;23(5):511-
Abstract: Objective To analyze the epidemiological characteristics (season, age, gender, mixed infection and clinical manifestations, etc.) of Mycoplasma pneumoniae (MP) infection in children in Hainan Province, so as to provide epidemiological evidence-based medical basis for the prevention and control of MP infection in children in Hainan Province. Methods The serum IgM antibodies of MP, Legionella pneumophila, Chlamydia pneumoniae, adenovirus, respiratory syncytial virus (RSV), Q fever Rickettsia, parainfluenza virus, influenza A virus and influenza B virus in children with respiratory tract infections (RTIs) who were hospitalized in pediatrics of many hospitals in Hainan Province from March 2012 to February 2020 were detected by indirect immunofluorescence method. The positive serum MP-IgM antibody was defined as MP infection. The epidemiological and clinical data of MP infected cases were analyzed retrospectively. Results From March, 2012 to February, 2020, a total of 35 731 qualified pediatric inpatients with RTIs in many hospitals in Hainan Province were tested for serum MP-IgM with the total positive rate of 39.12% (13 978/35 731). The yearly positive rates of MP-IgM from 2012 to 2020 were 48.39%, 56.23%, 56.62%, 47.04%, 29.71%, 24.14%, 47.55%, 36.84% and 24.46% respectively. The positive rates of MP-IgM in 2013 and 2014 were significantly higher than those in other years (P<0.05). The positive rate of MP-IgM in summer in Hainan Province was the highest (41.34%) and the lowest in winter (35.77%) (P<0.05). MP infection occurred in all age groups, the positive rate of MP-IgM in children of preschool (51.80%) was significantly higher than that in other age groups (P<0.01), and the positive rate of MP IgM in children of infancy (15.36%) was lower than that in other age groups (P<0.01). The positive rate of MP-IgM in female was 44.77%, which was significantly higher than that in male (35.83%) (P<0.05). MP infection combined with positive IgM of another pathogen accounted for 32.63% (4 561 cases), positive IgM of another two pathogens accounted for 1.26% (176 cases). MP infection was mostly found in pneumonia (68.73%), and the main clinical symptoms were cough (84.72%), fever (51.01%) and wheezing (3.16%). Conclusions MP is an important pathogen of respiratory tract infection in children in Hainan Province, and infection is more common in children in early school age and early childhood. Mp-specific tests should be performed to identify the pathogen in children suspected of MP infection. In the high incidence season, health education should be strengthened in kindergartens, schools and other places to prevent respiratory tract infection.

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