Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 330
Filter
1.
Article in Chinese | WPRIM | ID: wpr-942363

ABSTRACT

Objective To evaluate the effectiveness of health education on knowledge, attitude and practice (KAP) relating to malaria control among overseas enterprise employees. Methods In September 2019, on-site malaria control health education was conducted among all Chinese employees of a China-funded mining enterprise in the Democratic Republic of Congo. The KAP questionnaire for malaria control was generated on the Questionstar website, and the participants were subjected to two questionnaire surveys prior to and 14 months after health education. After the questionnaires were recovered, all valid questionnaires were divided into 4 groups, including the baseline group (the questionnaires filled out by respondents who received health education and participated in two questionnaire surveys before health education), the loss-to-follow-up group (the questionnaires filled out by respondents who received health education but only participated in the questionnaire survey after health education), the retest group (the questionnaires filled out by respondents who received health education and participated in two questionnaire surveys after health education) and the new group (questionnaires filled out by respondents who did not receive health education and only participated in the questionnaire survey after health education) according to subjects’ receiving health education and participation in two questionnaire surveys. The correct rate of malaria control knowledge, the proportion to good attitudes towards malaria control and the proportion of good practices towards malaria control were compared between the baseline group and the loss-to-follow-up group, between the baseline group and the retest group, and between the retest group and the new group. Results A total of 110 and 142 valid questionnaires were recovered during the two surveys, and the recovery rates were 90.9% and 70.3%, respectively. There were 77, 77, 33, and 65 valid questionnaires recovered from the baseline group, the loss-to-follow-up group, the retest group, and the new group, respectively. There were no significant differences in respondents’ gender, age and educational levels between the baseline group and the loss-to-follow-up group (all P values > 0.05), and there were no significant differences between the two groups in terms of the mean score of malaria control knowledge (Z = 2.011, P > 0.05), the mean score of attitudes towards malaria control (t = −0.787, P > 0.05) and the mean score of practices towards malaria control (t = −0.787, P > 0.05). There were significant differences between the retest group and the baseline group in terms of the mean score of malaria control knowledge (10.83 vs. 9.79; Z = −4.017, P < 0.05), the mean score of attitudes towards malaria control (29.48 vs. 28.61; Z = −1.981, P < 0.05) and the mean score of practices towards malaria control (6.43 vs. 5.91; Z = −2.499, P < 0.05). There were no significant differences between the retest group and the new group in terms of gender, age or education levels (all P values > 0.05), and a higher mean score of malaria control knowledge was found in the retest group than in the new group (10.83 vs. 9.81; Z = −2.962, P < 0.05), while no significant differences were seen in the mean score of attitudes towards malaria control (29.48 vs. 30.17; Z = −1.158, P > 0.05) and the mean score of practices towards malaria control (6.43 vs. 6.37; Z = −0.048, P > 0.05) between the two groups. Conclusion Malaria control health education may significantly improve the understanding of malaria control knowledge, positive attitudes towards malaria control and the compliance of practices towards malaria control among overseas enterprise employees.

2.
Article in Chinese | WPRIM | ID: wpr-940352

ABSTRACT

ObjectiveTo investigate the effect of modified Renshen Wumeitang(MRWT) on the related regulatory factors of the γ-aminobutyric acid (GABA) signaling pathway in colon tissues of rats with diarrhea, and reveal the mechanism of MRWT in invigorating Qi, generating fluid, and checking diarrhea. MethodForty-eight SD immature rats were randomly divided into a blank group (n=12) and an experimental group (n=36). The diarrhea model was induced in the experimental group by Sennae Folium combined with overstrain and improper diet for 14 days. Subsequently, the model rats were randomly divided into a model group (normal saline, 20 mL·kg-1), a western medicine group (Medilac-Vita, 0.7 g·kg-1), and a Chinese medicine group (MRWT, 35 g·kg-1), with 12 rats in each group. The rats in the blank group received normal saline at 20 mL·kg-1, and those in the other groups were treated correspondingly, once a day for 7 days. The general condition, loose stool rate, and diarrhea index of the rats were observed daily. Immunohistochemistry was used to detect the optical density expression of GABA protein in the colon of rats. The content of phosphatidylinositol-3 kinase (PI3K), protein kinase B2 (Akt2), phosphorylated Akt (p-Akt), and interleukin-1β (IL-1β) was determined by enzyme-linked immunosorbent assay (ELISA). The mRNA and protein expression levels of PI3K, Akt2, and GABA type A receptor subunit β2 (GABRB2) in the colon of rats were detected by Real-time fluorescence quantitative polymerase chain reaction (Real-time PCR) and Western blot, respectively. ResultCompared with the blank group, the model group showed worsened general condition, The difference was not statistically significant of loose stool rate and diarrhea index, increased expression of GABA protein (P<0.05), elevated expression of PI3K, Akt2, p-Akt, and IL-1β (P<0.05, P<0.01), and up-regulated PI3K, Akt2, and GABRB2 mRNA and protein expression (P<0.01). Compared with the model group, the western medicine group and the Chinese medicine group showed the improved general condition, decreased loose stool rate and diarrhea index (P<0.01), and decreased content of PI3K, Akt2, p-Akt, and IL-1β (P<0.05). The Chinese medicine group displayed decreased mRNA expression of PI3K, Akt2, and GABRB2 (P<0.05, P<0.01) and down-regulated protein expression of GABA, PI3K, and GABRB2 (P<0.05, P<0.01). The western medicine group exhibited down-regulated mRNA expression of PI3K,Akt2,and protein of PI3K (P<0.05). ConclusionMRWT can regulate the GABA signaling pathway, reduce Cl- flow in intestinal epithelial cells to the intestinal lumen, and improve the imbalance of colonic fluid metabolism in the colon of diarrhea rats, thereby exerting its effects of invigorating qi, generating fluid, and checking diarrhea.

3.
Article in Chinese | WPRIM | ID: wpr-928327

ABSTRACT

As an important exercise and energy metabolism organ of the human body, the normal maintenance of skeletal muscle mass is essential for the body to perform normal physiological functions. The autophagy-lysosome (AL) pathway is a physiological or pathological mechanism that is ubiquitous in normal and diseased cells. It plays a key role in the maintaining of protein balance, removing damaged organelles, and the stability of internal environment. The smooth progress of the autophagy process needs to go through multiple steps, which are completed under the coordinated action of multiple factors. Autophagy maintains the muscle homeostasis of a healthy body by removing cell components such as damaged myofibrils and isolated cytoplasmic proteins. Autophagy could also provide the initial energy required for cell proliferation, promote muscle regeneration and remodeling after injury. At the same time, autophagy disorder is also an important cause of age-related skeletal muscle atrophy. Autophagy could affect the response of skeletal muscle to exercise, and increasing the level of basic autophagy is beneficial to improve the adaptive response of skeletal muscle to exercise. This article summarizes the role and pathways of autophagy in the maintenance of skeletal muscle quality, in order to provide effective rehabilitation strategies for clinical prevention and treatment of muscle atrophy.


Subject(s)
Autophagy/physiology , Exercise/physiology , Humans , Muscle, Skeletal/pathology , Muscular Atrophy/pathology , Signal Transduction
4.
Article in Chinese | WPRIM | ID: wpr-923779

ABSTRACT

Objective To investigate the health-seeking behaviors of imported malaria cases after returning to China, and to investigate the factors affecting the time to initial diagnosis, so as to provide the scientific evidence for early identification of imported malaria cases and prevention of severe cases development and secondary transmission. Methods The individual demographic features, and the disease onset and the time to initial diagnosis of imported malaria cases in Jiangsu Province in 2019 were captured from the National Notifiable Disease Report System and the Information Management System for Parasitic Disease Control in China. The characteristics of health-seeking behaviors and epidemiological features of imported malaria cases were descriptively analyzed, and the factors affecting the time to initial diagnosis of imported malaria cases after returning to China were identified using multivariate logistic regression analysis. Results A total of 244 imported malaria cases were reported in Jiangsu Province in 2019, and the time to initial diagnosis of the cases were 1-12 days, with mean time of (1.53 ± 1.65) days, with median time of one day. The highest number of malaria cases seeking healthcare services were found on the day of developing primary symptoms (76 cases, 31.1%), followed by on the second day (68 cases, 27.9%), on the third day (46 cases, 18.9%), and 54 cases (22.1%) received initial diagnosis 3 days following presence of primary symptoms, including 3 cases with initial diagnosis at more than one week. High proportions of imported malaria cases with a delay in the time to initial diagnosis were seen in migrant workers who returned to China in January (14 cases, 5.7%) and December (13 cases, 5.3%) and those aged between 41 and 50 years (32 cases, 13.1%). Multivariate logistic regression analysis showed relative short time to initial diagnosis among imported malaria cases returning to China on March [odds ratio (OR) = 0.16, P = 0.03, 95% confidence interval (CI): (0.03, 0.85)] and those with a history of overseas malaria parasite infections [OR = 0.36, P = 0.001, 95% CI: (0.19, 0.67)]. Conclusions Timely health-seeking behaviors should be improved among imported malaria cases in Jiangsu Province, patients with a history of overseas malaria infections require faster health-seeking activities.

5.
Article in Chinese | WPRIM | ID: wpr-936286

ABSTRACT

OBJECTIVE@#To identify the target genes mediating anti-tumor effect of sesquiterpenoids from Cryptoporus volvatus and explore the possible mechanism using molecular docking and molecular dynamics simulation.@*METHODS@#Based on the chemical structure of sesquiterpenes from C. volvatus, we explored the online reverse target finding websites PharmMapper, SEA, Target Hunter and related literature for preliminary prediction of possible anti-tumor targets. Discovery Studio 4.0 (Libdock function) and Maestro 12.3 were used to connect sesquiterpenes with the possible targets, and the potential targets were selected according to the scores. The interaction between the sesquiterpenes and the targets were analyzed using 2D interaction diagram, and the influence of different sesquiterpene skeletons on their activity was inferred based on their activity measurements in experiment. Kinetic simulation was performed for front-end protein sequence (1UNQ) of the Akt (protein kinase B) and for the complex formed by 1UNQ and compound 4 (which had the best cytotoxic activity in vitro) in its optimal conformation, and the root mean square deviation (RMSD) value and root mean square float (RMSF) value of the complex and 1UNQ were measured to evaluate the stability of the binding of compound 4 to the target.@*RESULTS@#The sesquiterpenes showed optimal binding with 1UNQ. Analysis of 2D interaction diagram suggested that the hydrogen bonding and electrostatic force were the most important forces mediating the interaction between the sesquiterpenes and 1UNQ. Analysis of the optimal 3D conformation showed that for different sesquiterpenes, a slight change of the molecular framework produced a steric hindrance effect and caused changes in their bioactivity. Kinetic simulation showed that the complex formed by compound 4 and1UNQ had a lower RMSD than the target pure protein sequence, indicating that compound 4 could stably bind to 1UNQ. The anti-tumor effect of the sesquiterpenoids from C. volvatus was associated with their ability to cause Lys-144 acetylation, which blocks Akt binding to the downstream PIP3 and thus affects the proliferation of tumor cells.@*CONCLUSION@#1UNQ is the target of sesquiterpenoids from C. volvatus, which affects the proliferation of tumor cells by acetylating Lys-14.


Subject(s)
Humans , Molecular Docking Simulation , Neoplasms , Polyporaceae , Sesquiterpenes/pharmacology
6.
Article in Chinese | WPRIM | ID: wpr-942995

ABSTRACT

Objective: Radiotherapy is one of the standard treatments for pelvic malignant tumors. However, researches associated with intestinal radiation injury and the quality of life (QoL) of patients receiving radiotherapy were lacking in the past. This study aims to analyze the occurrence of radiation-induced rectal injury after adjuvant radiotherapy for pelvic malignant tumors and call for more attention on this issne. Methods: A retrospectively observational study was conducted. Case data of cervical cancer patients from the database of STARS phase 3 randomized clinical trial (NCT00806117) in Sun Yat-sen University Cancer Center were analyzed. A total of 848 cervical cancer patients who received adjuvant radiation following hysterectomy and pelvic lymphadenectomy in Sun Yat-sen University Cancer Center from February 2008 to August 2015 were recruited. The pelvic radiation dosage was 1.8 Gy/day or 2.0 Gy/day, five times every week, and the total dosage was 40-50 Gy. Among 848 patients, 563 patients received radiation six weeks after surgery, of whom 282 received adjuvant radiation alone and 281 received concurrent chemoradiotherapy (weekly cisplatin); other 285 patients received sequential chemoradiotherapy (paclitaxel and cisplatin). Acute adverse events, chronic radiation damage of rectum, and QoL were collected and analyed. The digestive tract symptoms and QoL were evaluated based on EORTC QLQ-C30 questionnaires at one week after surgery (M0), during adjuvant therapy period (M1), and at 12 months and 24 months after the completion of treatments (M12 and M24), respectively. Higher scores in the functional catalog and overall quality of life indicated better quality of life, while higher scores in the symptom catalog indicated severe symptoms and worse QoL. Chronic radiation rectal injury was defined as digestive symptoms that were not improved within three months after radiotherapy. Grading standard of acute adverse events and chronic radiation rectal injury was according to the gastrointestinal part of National Cancer Institute Common Terminology Criteria for Adverse Events, version 4.0 (NCI-CTCAE Version 4.0). Results: The mean total radiation dosage of 848 patients was (47.8±4.6) Gy. During adjuvant therapy, the common symptoms of acute intestinal dysfunction were nausea (46.0%, 390/848), vomiting (33.8%, 287/848), constipation (16.3%, 138/848) and abdominal pain (10.3%, 87/848). At M12 and M24, the number of 0 QLQ-C30 questionnaires collected was 346 and 250, respectively. QLQ-C30 questionnaires showed that the scores of nausea or vomiting, appetite decrease, diarrhea, constipation, etc. were improved obviously at M12 or M24 compared with those at M0 or during M1 (all P<0.05). As the extension of the follow-up time, the score of the overall QoL of patients gradually increased [M0: 59.7 (0.0-100.0); M1: 63.1 (0.0-100.0); M12: 75.2 (0.0-100.0); M24: 94.1 (20.0-120.0); H=253.800, P<0.001]. Twelve months after the completion of treatments, the incidence of chronic radiation rectal injury was 9.8% (34/346), mainly presenting as abdominal pain, constipation, stool blood, diarrhea, mostly at level 1 to 2 toxicity (33/34, 97.1%). One patient (0.3%) developed frequent diarrhea (>8 times/d), which was level 3 toxicity. Twenty-four months after all treatments, the incidence of chronic radiation rectal injury was 9.6% (24/250), which was not decreased significantly compared to that in the previous period (χ(2)=0.008, P=0.927). The symotoms of one patient with level 3 toxicity was not relieved. Conclusions: The common symptoms of patients with pelvic maligant tumors during postoperative adjuvant radiotherapy include nausea, vomiting, constipation, abdominal pain and diarrhea. These symptoms are alleviated obviously at 12 and 24 months after adjuvant radiotherapy, and the QoL is significantly improved. However, a few patients may develop chronic radiation rectal injury which is not improved for years or even decades, and deserves attention in clinical practice.


Subject(s)
Female , Humans , Pelvic Neoplasms/radiotherapy , Quality of Life , Radiation Injuries , Radiotherapy Dosage , Radiotherapy, Adjuvant , Rectum/surgery , Retrospective Studies
7.
Article in Chinese | WPRIM | ID: wpr-942389

ABSTRACT

Objective: To analyze the features of degenerating cystic thyroid nodules (DCTN) on conventional ultrasound and contrast-enhanced ultrasound (CEUS), and to explore the differentiation between DCTN and papillary thyroid carcinomas (PTC). Methods: A total of 46 DCTN (39 cases, including 12 males and 27 females, with an age range of 25 to 76 years) and 36 PTC (32 cases, including 8 males and 24 females, with an age range of 23 to 68 years) diagnosed via fine- needle aspiration (FNA) or surgery from February 2019 to January 2020 in the First Affiliated Hospital of Nanchang University were enrolled. The size, shape, margin, echogenicity, presence of shadowing, calcification and vascularity of DCTN and PTC were retrospectively evaluated, and 28 DCTN and 30 PTC underwent CEUS were separately analyzed and compared.The t test, χ² test or Fisher's exact test were implemented to compare the features of ultrasound among the two groups. The binary Logistic regression test was performed to determine whether the feature whose difference was statistically significant was an independent predictive risk factor. Results: A univariate analysis indicated that DCTN more frequently showed wider-than-tall shapes, marked hypoechogenicity, well-defined margin and no or dot-lined enhancement (wider-than-tall shapes: 36 vs. 17, χ2=8.511; well-defined margin: 30 vs. 15, χ2=4.523; marked hypoechogenicity: 27 vs. 9, χ2=9.310; no or dot-lined enhancement: 24 vs. 3, χ2=33.369; all P<0.05). A multivariate analysis demonstrated that wider-than-tall shapes, well-defined margin and marked hypoechogenicity were independent predictors for DCTN (OR values were 5.204, 3.134 and 5.042, P values were 0.003, 0.031, and 0.003, respectively). Among 28 DCTN, 15 showed a decrease in mean maximum diameter (24.3±11.4 mm) with a mean time span of (18.6±10.5) months between the presence and absence of suspicious ultrasound features. Conclusions: Compared with PTC, DCTN shows the ultrasound characteristics of wider-than-tall shapes, well-defined margin, marked hypoechogenicity and no or dot-lined enhancement pattern. Ultrasound follow-up can help to identify spontaneous DCTN.


Subject(s)
Adult , Aged , Carcinoma, Papillary/diagnostic imaging , Female , Humans , Male , Middle Aged , Retrospective Studies , Thyroid Cancer, Papillary/diagnostic imaging , Thyroid Neoplasms/diagnostic imaging , Thyroid Nodule/diagnostic imaging , Ultrasonography
8.
Article in Chinese | WPRIM | ID: wpr-942260

ABSTRACT

The study is to improve clinicians' understanding of TAFRO syndrome, to explore the diagnosis and treatment of TAFRO syndrome and to identify TAFRO syndrome in the early stage. The clinical manifestations, laboratory examination results, imaging manifestations, diagnosis and treatment of TAFRO syndrome were reported, and the literature of TAFRO syndrome was reviewed. The main clinical manifestations of the female were intermittent vaginal bleeding, fever, depressive edema of both legs, red blood cell and thrombocytopenia, and renal function deterioration. The results showed that leukocytes increased, anemia, thrombocytopenia and severe renal dysfunction were found; With fever, C-reactive protein and procalcitonin increased significantly, bone penetration suggested that granulocyte proliferation was active, and megakaryocytes were seen. But anti-infection treatment was ineffective; CT suggested that there was a high uptake of multiple fluorodeoxyglucose (FDG) in many parts of the body; The lymph node biopsy was considered to be in accordance with the transparent vascular type of Castleman disease; Renal biopsy was used to return thrombotic microvascular disease with subacute renal tubulointerstitial nephropathy. In terms of treatment, the clinical condition of the patients was improved after methylprednisolone (60 mg, once a day), the temperature was normal, and the effusion in the serous cavity was better than before. The blood transfusion and platelet support therapy were intermittently given. Hemoglobin and platelets were increased in sex, and the urine volume increased to 1 000 mL/day. However, the platelet dropped at a later time, after 1 month of treatment with topizumab, the clinical condition of the patients was further improved. At present, the blood pigment and platelets returned to normal and had been separated from dialysis. TAFRO syndrome is a special subtype of idiopathic multicentric Castleman disease, and it is a group of systemic inflammatory diseases with its own characteristics. Its clinical manifestations and diagnosis and treatment are unique compared with other idiopathic multicentric Castleman diseases. For the enlargement of lymph nodes of unknown reasons, it is suggested to improve the lymph node biopsy actively. Renal insufficiency is an important part of TAFRO syndrome. Renal biopsy is of great significance to study the pathogenesis of TAFRO syndrome and to judge the prognosis of patients. The clinical diagnosis of the disease requires comprehensive clinical manifestations and the results of various examinations. Early diagnosis and early treatment of the disease can often achieve good clinical effect.


Subject(s)
Castleman Disease , Edema , Female , Fever/etiology , Humans , Kidney , Renal Insufficiency
9.
Article in Chinese | WPRIM | ID: wpr-873743

ABSTRACT

Objective To examine the relationship between serum vitamin D level and immune imbalance in advanced schistosomiasis patients with liver fibrosis. Methods A total of 120 advanced schistosomiasis patients with liver fibrosis that were admitted to the Department of Schistosomiasis of The First Hospital of Jiaxing City from May 2016 to September 2018 were recruited as the observation group, and 50 healthy volunteers randomly sampled from the hospital during the same period served as the control group. The serum IgG antibody, IgA antibody, C3 complement, C4 complement, CD4+ cell proportion, CD8+ cell proportion, 25-hydroxyvitamin D [25(OH)D] levels were compared between the two groups. Liver fibrosis was classified into grade I, II and III according to the classification criteria of liver fibrosis by ultrasonography, and the serum IgG antibody, IgA antibody, C3 complement, C4 complement, CD4+ proportion, CD8+ proportion, 25(OH)D levels were compared among patients with grade I, II and III liver fibrosis. In addition, all patients were classified into the sufficient group, the insufficient group and the deficient group according to the serum vitamin D level, and the serum IgG antibody, IgA antibody, C3 complement, C4 complement, CD4+ proportion, CD8+ proportion, 25(OH)D levels were compared among these three groups. Moreover, the associations of the serum vitamin D level with these immune indicators were examined. Results The 120 advanced schistosomiasis patients with liver fibrosis included 58 men and 62 women, and had a mean age of (72.00 ± 3.00) years. There were 32 cases with grade I liver fibrosis, 46 cases with grade II liver fibrosis, and 42 cases with grade III liver fibrosis. There were no significant differences between the observation group and the control group in terms of serum D-dimer, total cholesterol (TC), triglyceride (TG), C3 complement or C4 complement levels (t = 2.467, 0.322, 0.790, -2.432 and -2.630, all P values > 0.05); however, there were significant differences seen in alanine aminotransferase (ALT), aspartate aminotransferase (AST), blood calcium, blood phosphorus, IgG antibody, IgA antibody, CD4+ proportion, CD8+ proportion, and 25(OH)D levels (t = 5.130, 6.382, -1.341, 2.361, 8.708, 11.783, -2.995, -6.543 and -3.022, all P values < 0.05). In addition, there were significant differences in AST, ALT, blood phosphorus, IgA antibody, C3 complement, CD8+ cell proportion and 25(OH)D levels among patients with grades I, II and III liver fibrosis (F = 19.704, 16.254, 62.669, 49.347, 5.430, 5.434 and 5.783, all P values < 0.05). There were significant differences in ALT, blood phosphorus, IgA antibody, CD8+ cell proportion and 25(OH)D levels between patients with grades I and III liver fibrosis (all P values < 0.05), and significant differences were seen between patients with grades II and III liver fibrosis in terms of blood phosphorus, IgA antibody and CD8+ cell proportion (all P values < 0.05), while there was a significant difference in the CD8+ cell proportion between patients with grades I and II liver fibrosis (P < 0.05). Moreover, there were significant differences among the sufficient, insufficient and deficient groups in terms of IgG antibody, IgA antibody, C3 complement, CD4+ cell proportion and CD8+ cell proportion (F = 13.303, 59.623, 8.698, 9.969 and 12.805, all P values < 0.05), and there was a significant difference in the CD8+ cell proportion between the insufficient and deficient groups (P < 0.05). Pearson correlation analysis revealed that serum 25(OH)D level were negatively associated with IgG and IgA antibody levels (r = -0.754 and -0.773, both P values < 0.05), and positively associated with C3 complement, CD4+ cell proportion and CD8+ cell proportion in advanced schistosomiasis patients with liver fibrosis (r = 0.827, 0.850 and 0.830, all P values < 0.05). Conclusion Immune imbalance occurs in advanced schistosomiasis patients with liver fibrosis, and serum vitamin D level may correlate with immune imbalance in advanced schistosomiasis patients with liver fibrosis.

10.
Acta Pharmaceutica Sinica ; (12): 328-335, 2021.
Article in Chinese | WPRIM | ID: wpr-872615

ABSTRACT

Rhamnose synthase (RHM) is a key enzyme in the biosynthesis of uridine diphosphate rhamnose (UDP-Rha), reversibly converting uridine diphosphate-glucose (UDP-Glc) into UDP-Rha in the presence of NADH or NADPH. In this research, yeast extract (YE) was used to stimulate Sorbus aucuparia suspension cells. Based on a previous study of the transcriptome database of S. aucuparia suspension cells, two RHMs were cloned from S. aucuparia and named SaRHM1 (GenBank No.: MK213340) and SaRHM2 (GenBank No.: MK213341). The SaRHM1 gene contained a 2 007 bp open reading frame (ORF) encoding a polypeptide of 668 amino acids with a molecular weight of 75.25 kD, and a theoretical isoelectric point (pI) of 7.24. The SaRHM2 gene contained a 2 040 bp ORF encoding a polypeptide of 679 amino acids with a molecular weight of 76.26 kD and pI of 6.41. Bioinformatic analysis indicated that SaRHM1 and SaRHM2 contained two special sequences of GxxGxxG/A and YxxxK. Multiple sequence alignments and phylogenetic trees show that SaRHM1 and SaRHM2 have high sequence similarity with other plant species of RHMs. The results of enzyme activity assays in vitro revealed that both recombinant SaRHM1 and SaRHM2 are able to convert UDP-Glc into UDP-Rha. SaRHMs displayed maximum activity at 40 ℃ and a pH of 8 and 9, respectively. The Km values of SaRHM1 and SaRHM2 for UDP-Glc were 212.4 ± 56.70 and 361.0 ± 63.74 μmol·L-1, respectively, with Vmax values of 235.5 ± 18.98 and 516.5 ± 22.30 nmol·min-1·μg-1, respectively. This study reports the cloning and sequencing of RHMs from S. aucuparia and verifies their function, which likely provide rhamnose donors for the subsequent biosynthesis of rhamnosides.

11.
Article in Chinese | WPRIM | ID: wpr-906189

ABSTRACT

Objective:To explore the potential targets and related mechanism involved in the paclitaxel resistance to ovarian cancer. Method:Ovarian cancer A2780 cells and A2780 paclitaxel-resistant cells (A2780/T) were treated by 2, 4, 8, 16, 32, 64, 128, 256 μmol·L<sup>-1</sup> paclitaxel (PTX) for 24 h or 48 h respectively <italic>in vitro</italic>. The proliferation rate of A2780 cells and A2780/T cells treated with paclitaxel was determined by methyl thiazolyl tetrazolium (MTT) colorimetric method assay. A2780 and A2780/T cells were analyzed by LC-MS/MS Label-Free quantitative proteomics to identify and screen differentially expressed proteins in the two groups of cells. Gene ontology (GO) annotation and Kyoto encyclopedia of genes and genomes (KEGG) pathway analysis were used to determine the potential biomarkers of paclitaxel resistance in ovarian cancer. Conventionally cultured A2780 cells were used as a control group, and A2780/T cells were treated with 0, 1, 4 μmol·L<sup>-1</sup> PTX. Real-time fluorescence quantitative polymerase chain reaction (Real-time PCR) and Western blot methods were used to detect and verify the mRNA and protein expression levels of potential target transforming growth factor-<italic>β</italic>-activated kinase 1 binding protein 1 (TAB1) and its downstream related molecules transforming growth factor-<italic>β</italic>-activated kinase (TAK1) and p38. Result:After PTX treatment for 24 h and 48 h, the cell viability of A2780 and A2780/T cells decreased. The inhibitory rate of PTX on A2780 cells was significantly higher than that of A2780/T cells. In A2780 cells, the IC<sub>50</sub> of PTX treatment for 48 h was 0.002 μmol·L<sup>-1</sup>, while in A2780/T cells, the IC<sub>50 </sub>of PTX was greater than the maximum concentration of 128 μmol·L<sup>-1</sup>, indicating that A2780/T cells were resistant to PTX compared with A2780 cells. 441 differentially expressed proteins and 421 special differentially expressed proteins between A2780/T and A2780 cells were screened by label-free quantitative proteomic analysis. GO function enrichment analysis showed that the binding proteins accounted for the majority (80%) among the differentially expressed proteins. According to the results of KEGG pathway analysis and expression site analysis, TAB1 might be a potential biomarker in paclitaxel-resistant ovarian cancer. Compared with A2780 cells, mRNA and protein expression levels of TAB1 in A2780/T cells were significantly reduced (<italic>P</italic><0.01). mRNA expression of TAK1 and p38 that interacted with TAB1 were also significantly reduced (<italic>P</italic><0.05, <italic>P</italic><0.01), while there was no significant change in protein expression. Conclusion:TAB1 may be a potential biomarker of paclitaxel resistance to ovarian cancer , and its mechanism may be related to the TAB1/TAK1/p38 MAPK pathway.

12.
Article in Chinese | WPRIM | ID: wpr-904629

ABSTRACT

Objective To investigate the distribution and density of Culex mosquito populations and the resistance of Culex pipiens pallens to insecticides in Jiangsu Province in 2018 and 2019. Methods During the period from June to October in 2018 and 2019, six counties (districts, cities) were sampled in southern, northern and central Jiangsu Province as surveillance sites. The density of Culex mosquitoes was measured overnight using the light trapping technique. In addition, Culex pipiens pallens mosquitoes were collected from Hai’an of Nantong City and Yandu District of Yancheng City, central Jiangsu Province, and the sensitivity of female first filial generations to dichlorodiphenyltrichloroethane (DDT), malation, proposur, beta cypermethrin and deltamethrin was tested using the standard WHO insecticide susceptibility test assay. Results A total of 104 423 Culex mosquitoes were captured in six surveillance sites of Jiangsu Province in 2018 and 2019, and Culex quinquefasciatus (49.11%), Culex pipiens pallens (28.38%), and Culex tritaeniorhynchus (21.04%) were predominant species. The density of Culex mosquitoes started to increase since early June, peaked in July and tended to be low in late October. Culex pipiens pallens mosquitoes captured from Hai’an was susceptible to malation, while those from Yandu District were moderately resistant to malation. Culex pipiens pallens mosquitoes from both Yandu and Hai’an were moderately resistant to proposur, and were resistant to DDT, beta cypermethrin and deltamethrin. Conclusions Culex quinquefasciatus, Culex pipiens pallens and Culex tritaeniorhynchus are predominant Culex species in Jiangsu Province. Culex pipiens pallens is resistant to DT, beta cypermethrin and deltamethrin in central Jiangsu Province.

13.
Article in Chinese | WPRIM | ID: wpr-886840

ABSTRACT

Chronic obstructive pulmonary disease (COPD) is one of the major chronic non-communicable diseases in the 21st century. With high prevalence and mortality, COPD has become a global problem. Due to high prevalence of COPD in China, it is necessary to prevent and control COPD effectively. There is increasing evidence that COPD is a complex systemic disease with numerous risk factors. This paper summarizes the risk factors of COPD based on the latest research, and provides scientific references for the prevention and control of COPD.

14.
Article in Chinese | WPRIM | ID: wpr-886105

ABSTRACT

Ambient fine particulate matter (PM2.5) is a mixture consisting of a wide range of chemical constituents including carbonaceous aerosols, water soluble ions and inorganic elements, and has become the major air pollutant in most cities in China. Evidence suggests that exposure to ambient PM2.5 induces damage on the cardiovascular system and can increase risk of the development and mortality of ischemic heart diseases (IHD). However, the effects of exposure to specific PM2.5 constituents on IHD remain unclear, and its underlying mechanisms are yet to be investigated. Here we reviewed studies investigating the association of short- and long-term exposure to specific PM2.5 constituents with IHD, which may provide useful clues for future relevant studies.

15.
Chinese Journal of Geriatrics ; (12): 345-350, 2021.
Article in Chinese | WPRIM | ID: wpr-884893

ABSTRACT

Objective:To investigate the clinical efficacy of radial extracorporeal shockwave therapy(ESWT)for scapulohumeral periarthritis in the elderly.Methods:A total of 82 patients diagnosed with scapulohumeral periarthritis at the rehabilitation medicine department of our hospital from July 2016 to January 2019 were retrospectively analyzed.The visual analogue score(VAS), Constant-Murley score(CMS), range of motion(ROM), adverse reactions, curative effectiveness and survival analysis were examined before treatment and at several time points within 6 months of treatment.Results:Compared with pre-treatment, the VAS, CMS, ROM, curative effects and survival analysis of patients with primary and secondary scapulohumeral periarthritis improved after treatment in both the conventional rehabilitation therapy group and the conventional rehabilitation therapy combined with ESWT group(all P<0.05). The short-term effects(2 weeks and 1 month after treatment)were better in the conventional rehabilitation therapy combined with ESWT group than in the conventional rehabilitation therapy group( P<0.05). There was no significant difference in long-term effects(2, 4 and 6 months after treatment)between the two groups( P>0.05). For patients with primary scapulohumeral periarthritis, conventional rehabilitation therapy combined with ESWT had advantages over conventional rehabilitation therapy in reducing the VAS score and improving shoulder function(CMS score and ROM)( P<0.05). For patients with secondary scapulohumeral periarthritis, conventional rehabilitation therapy combined with ESWT was better in reducing VAS than conventional rehabilitation therapy( P<0.05), while there was no significant difference in shoulder function improvement between the two groups(all P>0.05). Conclusions:Conventional rehabilitation combined with ESWT can relieve shoulder pain, improve range of motion and has a good safety profile in the treatment of scapulohumeral periarthritis in the elderly, but there is no significant difference in long-term efficacy between conventional rehabilitation therapy and conventional rehabilitation therapy combined with ESWT.

16.
Article in Chinese | WPRIM | ID: wpr-921669

ABSTRACT

In this study, the rhizobacteria and actinomycetes of Polygonum multiflorum were screened for the strains with indole acetic acid(IAA)-producing capacity by Salkowski method, the siderophore-producing strains by Chrome Azurol S(CAS) assay, and the strains with inorganic phosphorus-solubilizing capacity by PKO inorganic phosphorus medium. The strains were identified by morphological identification, physiological and biochemical characteristics, and 16 S rDNA sequences. Furthermore, the effect of growth-promoting strains on the seed germination and development of P. multiflorum was tested. The results showed that among 196 strains, two strains F17 and F42 were found to be capable of producing IAA and siderophore and solubilizing inorganic phosphorus simulta-neously. For F17 and F42, the results are listed below: 38.65 and 33.64 mg·L~(-1) for IAA production, 0.85 and 0.49 for siderophore-producing capacities(A_s/A_r), and 1.35 and 1.70 for inorganic phosphorus-solubilizing capacities(D/d), respectively. Comprehensive analysis revealed that strains F17 and F42 were identified as Pseudochrobactrum asacharolyticum and Bacillus aryabhattai, respectively, and both could significantly promote the seed germination of P. multiflorum.


Subject(s)
Bacillus , Fallopia multiflora , Germination , Seeds , Soil Microbiology
17.
Chinese Medical Journal ; (24): 2619-2628, 2021.
Article in English | WPRIM | ID: wpr-921210

ABSTRACT

BACKGROUND@#Microribose nucleic acids (miRNAs) are implicated in the progression of lung adenocarcinoma. MicroRNA-345-5p (miR-345-5p) is a recently identified anti-oncogene in some human cancers, but its functional role and possible molecular mechanism in lung adenocarcinoma remain unknown. This study aimed to identify the biological function and underlying mechanism of miR-345-5p in lung adenocarcinoma cells.@*METHODS@#In this study, lung adenocarcinoma tissues and adjacent tissues were collected in the First Affiliated Hospital of Anhui Medical University between April 2016 and February 2017. The expression of miR-345-5p and ras homolog family member A (RhoA) in lung adenocarcinoma tissues and human lung adenocarcinoma cell lines (A549, H1650, PC-9, and H441) was detected by reverse transcription quantitative polymerase chain reaction analysis. Functional assays including colony formation, flow cytometry analysis, wound healing, and transwell assays were performed to assess the proliferation, apoptosis, migration, and invasion of lung adenocarcinoma cells. In addition, RNA pulldown and luciferase reporter assays were conducted to evaluate the relationship between miR-345-5p and RhoA. Difference between the two groups was analyzed with Student's t test, while that among multiple groups was analyzed with one-way analysis of variance.@*RESULTS@#MiR-345-5p expression displayed lower level in lung adenocarcinoma tissues (0.241 ± 0.095 vs.1.000 ± 0.233, t = 19.247, P < 0.001) and cell lines (F = 56.992, P < 0.001) than control tissues and cells. Functional experiments demonstrated that upregulation of miR-345-5p inhibited the malignant phenotypes of lung adenocarcinoma cells via suppressing cell proliferation, migration, invasion, and facilitating cell apoptosis. Additionally, RhoA was verified to be the downstream target of miR-345-5p. Expression of RhoA was downregulated by overexpression of miR-345-5p in PC-9 (0.321 ± 0.047 vs. 1.000 ± 0.127, t = 8.536, P < 0.001) and H1650 (0.398 ± 0.054 vs. 1.000 ± 0.156, t = 4.429, P = 0.011) cells. Rescue assays revealed that overexpression of RhoA rescued the suppressive effects of miR-345-5p upregulation on proliferation, migration, and invasion of lung adenocarcinoma cells. Further, miR-345-5p was found to regulate the Rho/Rho-associated protein kinase (ROCK) signaling pathway by downregulation of RhoA in lung adenocarcinoma cells.@*CONCLUSIONS@#MiR-345-5p plays a tumor suppressor role in lung adenocarcinoma cells by downregulating RhoA to inactivate the Rho/ROCK pathway.


Subject(s)
Adenocarcinoma of Lung/genetics , Cell Line, Tumor , Cell Movement/genetics , Cell Proliferation/genetics , Gene Expression Regulation, Neoplastic , Humans , Lung Neoplasms/genetics , MicroRNAs/genetics , Up-Regulation/genetics , rho-Associated Kinases/genetics , rhoA GTP-Binding Protein/genetics
18.
Article in Chinese | WPRIM | ID: wpr-920746

ABSTRACT

Objective To analyze the epidemiological characteristics of imported cases with Plasmodium ovale infections in Jiangsu Province from 2012 to 2020, so as to provide insights into the development of the imported malaria control strategy in the province. Methods All data pertaining to cases with definitive diagnosis of P. ovale malaria in Jiangsu Province from 2012 to 2020 were captured from the National Notifiable Disease Report System and the Information Management System for Parasitic Disease Control in China, including the date of going abroad and returning to China, time of malaria infections overseas, date of malaria onset, initial diagnosis and definitive diagnosis. All data pertaining to epidemic status were descriptively analyzed. Results A total of 347 cases of P. ovale malaria were reported in Jiangsu Province from 2012 to 2020, with the highest number seen in 2015 (71 cases). All cases were laboratory-confirmed overseas imported malaria cases, accounting for 14.32% of all reported malaria cases in Jiangsu Province during the period from 2012 to 2020. The 5 cities with the highest number of imported P. ovale malaria cases included Lianyungang City (53 cases, 15.27%), Nantong City (44 cases, 12.68%), Huai’an (44 cases, 12.68%), Taizhou City (44 cases, 12.68%) and Yangzhou City (36 cases, 10.37%). The highest number of imported P. ovale malaria cases was reported in October (39 cases, 11.24%), and the lowest number was seen in December (21 cases, 6.05%). P. ovale infections mainly occurred in were Equatorial Guinea (97 cases, 37.95%), Angola (60 cases, 17.29%) and Nigeria (40 cases, 11.53%). The median duration between returning to China and malaria onset was 64 (144) days, and 7.49% (26/347) of all cases developed malaria one year after returning to China. The initial diagnosis of P. ovale malaria was mainly made at county-level medical institutions (117 cases, 33.72%), and the definitive diagnosis was mainly made at city-level medical institutions (122 cases, 35.16%). The correct rate of initial diagnosis of P. ovale malaria increased from 0 in 2012 to 78.26% in 2020, appearing a tendency towards a rise year by year (χ2 = 50.90, P < 0.01). Conclusions Imported P. ovale malaria cases were reported in Jiangsu Province each year from 2012 to 2020, and P. ovale infections predominantly occurred in Africa. Initial and definitive diagnoses of P. ovale malaria were mainly made at city- and county-level medical institutions. Training on the detection ability of malaria parasites is recommended among grassroots microscopists to improve the diagnostic ability of P. ovale malaria, and consolidate the achievements of malaria elimination in Jiangsu Province.

19.
Article in Chinese | WPRIM | ID: wpr-879170

ABSTRACT

Atractylodis Rhizoma(AR) is a traditional Chinese medicinal material for food and medicine, with the functions of eli-minating dampness, strengthening the spleen, expelling wind evil and dispersing cold. AR contains a variety of compounds, including sesquiterpenoids, alkynes, triterpenoids, aromatic glycosides, polysaccharides and so on. At present, the researches on AR mainly focus on volatile components, with relatively fewer researches on non-volatile components. Polysaccharide from Atractylodis Rhizoma(ARP) is an important material basis among non-volatile components for the efficacy. Due to its many biological activities such as immunomodulatory activity, anti-tumors, anti-virus and anti-oxidation, ARP has certain research value and potential. The diversity of the polysaccharide structure is the basis for biological functions, but it also increases the difficulty of carbohydrate research. The research on the extraction, separation, purification, structure and activity of ARP is in the preliminary exploration stage, still with many shortcomings. Herein, recent advancements in the extraction, purification, structural characteristics and biological activities of ARP were summarized in this article to provide scientific reference for the in-depth systematic research of ARP and the development of AR resources.


Subject(s)
Atractylodes , Drugs, Chinese Herbal , Polysaccharides , Rhizome , Triterpenes
20.
Article in Chinese | WPRIM | ID: wpr-879149

ABSTRACT

Plants have a memory function for the environmental stress they have suffered. When they are subjected to repeated environmental stress, they can quickly and better activate the response and adaptation mechanism to environmental stress, thus realizing long-term stable reproduction. However, most of the relevant studies are applied to crops and Arabidopsis thaliana rather than medicinal plants about the improvement of plant growth status and the effect on phytoalexin biosynthesis. In this study, yeast extract(YE) was used as an elicitor to simulate biotic stress, and the changes in biomass and the content of some secondary metabolites were measured by giving repeated stresses to Sorbus aucuparia suspension cell(SASC). The results showed that the accumulation levels of biomass and some secondary metabolites in SASC subjected to repeated stress are significantly increased at some time points compared with single stress. A phenomenon that SASC can memorize biotic stress is confirmed in this study and influences phytoalexin accumulation in SASC. Furthermore, the work laid the groundwork for research into the transgenerational stress memory mechanism of medicinal plant.


Subject(s)
Cells, Cultured , Secondary Metabolism , Sorbus , Stress, Physiological
SELECTION OF CITATIONS
SEARCH DETAIL