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1.
Journal of Experimental Hematology ; (6): 1050-1055, 2021.
Article in Chinese | WPRIM | ID: wpr-888517

ABSTRACT

OBJECTIVE@#To investigate the effect of sulforaphane (SFN) on G@*METHODS@#KG1a and KG1cells were treated by different concentrations of SFN for 48 h. Flow cytometry (FCM) was used to analyze the phase distribution of cell cycle. High-throughput sequencing was used to detect the effect of SFN on the expression of cell cycle related genes in KG1a cells. The mRNA expression of P53, P21, CDC2 and CyclinB1 were detected by qPCR. The protein expression of P53, CDC2, P-CDC2 and CyclinB1 were detected by Western blot.@*RESULTS@#Cells in the G@*CONCLUSION@#SFN induces leukemia cells to block in G


Subject(s)
Cell Cycle , Humans , Isothiocyanates/pharmacology , Leukemia, Myeloid, Acute , Mitosis , Sulfoxides
2.
Article in Chinese | WPRIM | ID: wpr-888319

ABSTRACT

Parathyroid hormone is one kind of osteoanabolic agents widely used in clinic for osteoporosis. However, parathyroid hormone needs to be further optimized in the treatment of osteoporosis due to its two way regulatory effect of bone formation with low-dose intermittent treatmentand bone resorption with high-dosecontinuous treatment. Hence, based on the molecular mechanism of parathyroid hormone regulating bone metabolism, we conclude that parathyroid hormone regulates bone metabolism mainly through the following signaling pathways: (1) Gs/cAMP/PKA signaling pathway, whichis the main mechanism of parathyroid hormone regulating bone metabolism to lead to bone formation or bone resorption. (2) G


Subject(s)
Bone Resorption , Humans , Osteogenesis , Osteoporosis , Parathyroid Hormone , Signal Transduction
3.
Acta Pharmaceutica Sinica ; (12): 3460-3472, 2021.
Article in Chinese | WPRIM | ID: wpr-906832

ABSTRACT

microRNA (miRNA) is a class of endogenous ~21nt non-coding single-strand small RNAs which play important roles in plant growth and development, signal transduction, stress response, and secondary metabolism. In recent years, a large number of miRNAs have been identified in various medicinal plants, and the regulatory effects of these miRNAs have been preliminarily studied. In medicinal plants, most of the active components are secondary metabolites, so it is of great significance to study the regulatory effects of miRNA on the formation of secondary metabolites. In this paper, the general research methods of plant miRNA and the research progress of medicinal plant miRNA and their regulatory effects on the formation of bioactive metabolites were reviewed, and the future direction of medicinal plant miRNA was prospected, so as to provide reference for the future research of medicinal plants.

4.
Article in Chinese | WPRIM | ID: wpr-905948

ABSTRACT

Ferroptosis is a new type of cell death caused by abnormal accumulation of iron-dependent reactive oxygen species (ROS) and imbalance of redox with the participation of iron ions. In recent years, studies have found that ferroptosis is associated with various diseases and can especially regulate the development of tumors. Chinese medicine has unique advantages in tumor prevention and treatment. How to use ferroptosis theory to guide the prevention and treatment of cancer and other tumor diseases by Chinese medicine is a new research hotspot. This paper summarizes the proposal, action mechanism, and signaling pathway of ferroptosis, its application in tumor therapy, and the research on the activity of Chinese medicine based on ferroptosis. Results found that the occurrence of ferroptosis is related to iron metabolism, lipid ROS metabolism, and other signaling pathways and gene expressions. Ferroptosis can regulate tumor initiation and development, treatment, and tumor immunity, which provides strategies for tumor treatment and anti-tumor drug development. By analyzing the biological activity of Chinese medicine against ferroptosis, we found that Chinese medicines (Scutellariae Radix, Puerariae Lobatae Radix, Astragali Radix, Ginkgo, Epimedii Folium, Artemisiae Annuae Herba, and Salviae Miltiorrhizae Radix et Rhizoma), Chinese herbal compounds ( Naotaifang, Si Junzitang, and Shenmai injection), and Chinese medicine effective components (baicalein, dihydroartemisinin, puerarin, piperlongumine, luteolin, and quercetin) can exert antitumor and other biological activities by regulating ferroptosis. Therefore, Chinese medicine has great potential in preventing and controlling tumors and other diseases by regulating ferroptosis. This paper provides theoretical basis and research ideas for the in-depth study of ferroptosis theory and guides the prevention and treatment of tumor diseases by Chinese medicine.

5.
Article in Chinese | WPRIM | ID: wpr-905883

ABSTRACT

Calycosin (CA), a functional phytoestrogenic isoflavone extracted from Chinese herb Astragali Radix, is characterized by high efficiency, low toxicity, and multiple targets and has multiple pharmacological activities such as anti-oxidation, anti-radiation, anti-bacteria, cardio-cerebrovascular protection, and immunity enhancement. A number of studies have proved its significant anti-tumor effect, making it expected to become a potential component for the treatment of malignant tumors. Research shows that CA exerts the anti-tumor effect via multiple mechanisms like inducing tumor cell apoptosis and inhibiting tumor cell proliferation, migration, and invasion. It has been proved to be effective in suppressing breast cancer, colorectal cancer, lung cancer, cervical cancer, ovarian cancer, nasopharyngeal cancer, and other common malignant tumors. Its anti-tumor activity is mainly related to the regulation of B-cell lymphoma-2 (Bcl-2) family genes, microRNA (miRNA), and estrogen receptor β (ERβ) to trigger tumor cell apoptosis. Its anti-proliferation activity is mainly reflected in the regulation of cyclin family, WD repeat-containing protein 7 (WDR7-7), and Ewing sarcoma-associated transcript 1 (EWSAT1). By blocking the epithelial mesenchymal transformation (EMT), vascular endothelial growth factor (VEGF), matrix metalloproteinases (MMPs), CA inhibits tumor cell metastasis and invasion. In addition, it inhibits tumors by regulating autophagy marker Beclin-1 induced tumor cell autophagy and increases the sensitivity to chemotherapy drugs, thus improving the treatment effect. Although there are many reports about the wide range of applications and good effects of CA in anti-tumor, the systematic review of its anti-tumor mechanism is still lacking. Therefore, this study reviewed the anti-tumor effects and mechanisms of CA, aiming to provide reference for researchers and clinical workers.

6.
Article in Chinese | WPRIM | ID: wpr-905853

ABSTRACT

Adequate sleep is an important factor to ensure the healthy functioning of the body. A type of chronic sleep diseases characterized by insufficient sleep can be collectively referred to as sleep deprivation (SD), which is divided into primary and secondary sources in terms of sources. As one of the most frequent types of diseases in recent years, SD has received more and more attention and attention from the whole society. SD can have a wide-ranging and far-reaching impact on cognitive behavior, such as decreased wakefulness, decreased alertness, and inattention, decreased sensory perception, decreased learning and memory capabilities, et al, involving the impact on multiple system functions of the human body, and It is closely related to the occurrence of many diseases, and may cause serious troubles to the normal life of patients and even their relatives and friends. The cognitive impairment caused by SD has been fully verified in clinical tests and various animal behavior experiments, mainly involving pathological damage such as changes in synaptic plasticity, enhanced endoplasmic reticulum stress, circadian rhythm disorders, and energy metabolism imbalance. Western medicine treatments for SD mostly have negative factors such as high side effect and strong addiction. However, Chinese medicine intervention focuses on the overall concept, has long-lasting effectiveness, significant effects, and mild side effects. It has also been widely recognized clinically for improving the complications of sleep disorders. This article reviews the current status and classification of SD research, its pathological mechanisms that lead to cognitive impairment and its molecular-level exploration directions and results. In recent 5 years, the therapeutic effect and experience of traditional Chinese medicine intervention therapy such as compound Chinese medicine, acupuncture and moxibustion as well as auxiliary therapy such as exercise and five sounds, in order to further summarize and clarify the interaction mechanism between SD and cognitive behavior, and provide a theoretical basis for the study of the pathological mechanism of SD disease and future clinical treatment.

7.
Article in Chinese | WPRIM | ID: wpr-905072

ABSTRACT

Objective:to explore the mechanism of modified Tianwang Buxindan in improving abnormal glucose and lipid metabolism in mice with chronic sleep deprivation from the signal pathway of orexin A/ orexin receptor 1(OX1R). Method:The 50 6-week-old male C57BL/6 mice were randomly divided into blank group , model group , estazolam group and Tianwang Buxindan low and high dose groups ,for ten mice of each group. Except the blank group, rats were deprived of sleep for 8 weeks by the method of multi-platform water environment. In the last 4 weeks, Tianwang Buxindan (8.5,17 g·kg-1)and estazolam solution(9.1 mg·kg-1)were given to the stomach, and the blank group and the model group were fed with pure water of the same volume. The food intake and body weight of mice were measured twice a week, on the 49th day, blood samples were collected from the tail vein for glucose tolerance test (GTT),on the 52nd day for insulin tolerance test(ITT), was used to detect the expression of total cholesterol (TCH), triglyceride(TG)and free fatty acid(FFA)in serum, and enzyme-linked immunosorbent assay(ELISA)was used to detect the expression of orexin A in serum and hypothalamus. Real-time fluorescence quantitative polymerase chain reaction(Real-time PCR)and Western blot were used to detect the mRNA and protein expression of OX1R in hypothalamus. Result:After administration, the food intake of mice in each group was different, compared with the blank group, the body weight of model group was significantly reduced(P<0.05), the glucose tolerance was significantly abnormal, and the TCH, TG, FFA values were significantly increased(P<0.01). The expression of orexin A in serum and hypothalamus increased significantly(P<0.01), and the mRNA and protein expression levels of OX1R in hypothalamus increased significantly(P<0.01). Compared with the model group, the body weight of each group of Tianwang Buxindan was significantly increased(P<0.05), with better glucose tolerance and insulin sensitivity, TCH, TG, FFA values were significantly reduced(P<0.05,P<0.01), accompanied by serum and the expression of orexin A in the hypothalamus was significantly decreased(P<0.05,P<0.01), the mRNA and protein expression levels of OX1R were significantly decreased(P<0.05,P<0.01). Conclusion:Tianwang Buxindan can protect mice from abnormal glucose and lipid metabolism induced by chronic sleep deprivation, and its mechanism may be related to the down-regulation of orexin A/OX1R signal expression.

8.
China Occupational Medicine ; (6): 379-385, 2021.
Article in Chinese | WPRIM | ID: wpr-923203

ABSTRACT

OBJECTIVE: To establishment the Sense of Security Scale for Medical Staff and test its reliability and validity. METHODS: The pre-test version scale was formulated through methods of literature review, semi-structured interviews with clinical medical staff, discussion with members of research groups, and consultation with medical experts. A total of 350 and 403 medical staff who worked in a tertiary A hospital in Guangdong Province were selected as the prediction and the verification samples, respectively, by convenience sampling method. The reliability and validity of the final version scale were tested by item analysis, exploratory factor analysis and confirmatory factory analysis. RESULTS: Through item analysis, it was determined that the scale was mainly composed of 24 items. Exploratory factory analysis extracted five characteristics: environmental factors, patient factors, self factors, organizational management, and social support, that explained 72.8% of the total variation. The results of confirmatory factory analysis showed that the ratio of chi-square to degree of freedom was 2.851, the mean square error of approximation was 0.068, the standardized mean square residual was 0.078, the goodness of fit index was 0.883, the normative fit index was 0.904, the comparative fit index was 0.935, the non-standard fitting index was 0.924, and the incremental fitting index was 0.936. The results of reliability and validity test showed that the total Cronbach alpha coefficient, Spearman-Brown coefficient and retest reliability were 0.939, 0.967 and 0.808, respectively. The item reliability of each item was 0.420-0.814, the composite reliability was 0.775-0.920, the content validity ratio was 0.904, the convergent validity was 0.514-0.741, and the discriminative validity was 0.717-0.861. CONCLUSION: The reliability and validity of each dimension of the Sense of Security Scale for Medical Staff is good, and it can be used as an evaluation tool to measure the sense of security in medical staff.

9.
Article in Chinese | WPRIM | ID: wpr-921733

ABSTRACT

Zhenwu Decoction(ZWD) has a history of more than 1 800 years in traditional Chinese medicine(TCM), which is used to treat various diseases characterized by Yangqi deficiency and exuberant water and dampness. It is currently the classic prescription for the treatment of chronic heart failure(CHF). This study provides a basis for the treatment of CHF with ZWD by elaborating the traditional efficacy, theoretical basis, and underlying mechanism of the prescription. Based on the research methods and judgment basis of quality markers(Q-markers) of Chinese medicine, the Q-markers of ZWD in the treatment of CHF were predicted from the aspects of transfer and traceability, specificity, effectiveness, compatibility environment, measurability, and processing. Demethyl-coclaurine,benzoylaconine, atractylenolide Ⅲ, paeoniflorin, 6-gingerol, 8-gingerol, pachymic acid, and dehydrotumulosic acid can be used as Q-markers of ZWD for treating CHF. The result provides a reference for exploring the pharmacodynamic substances of ZWD in the treatment of CHF.


Subject(s)
Biomarkers , Drugs, Chinese Herbal/therapeutic use , Heart Failure/drug therapy , Humans , Medicine, Chinese Traditional
10.
Article in Chinese | WPRIM | ID: wpr-921688

ABSTRACT

To systematically review the efficacy and safety of Yangxin Dingji Capsules in the treatment of arrhythmia. PubMed, EMbase, Cochrane Library, CNKI, VIP, CBM and Wanfang databases were electronically retrieved to collect randomized controlled trial(RCT) on the efficacy of Yangxin Dingji Capsules in the treatment of arrhythmia from the time of database establishment to October 20 th, 2020. Two reviewers independently screened out the literatures, input the data, and evaluated the literature quality of the included studies. RevMan 5.3 software was used for Meta-analysis. A total of 127 studies were retrieved, and 15 articles were included after screening, involving 1 371 cases, with 685 cases in the treatment group and 686 cases in the control group. Yangxin Dingji Capsules combined with anti-arrhythmia western medicine was adopted for intervention in the treatment group, while the patients in the control group were treated with the anti-arrhythmia western medicine alone. Meta-analysis results showed that in arrhythmia patients, the combination of Yangxin Dingji Capsules and conventional western medicine significantly increased the clinical efficacy(RR=1.23, 95%CI[1.17, 1.30], P<0.000 01)and left ventricular ejection fraction(MD=4.31, 95%CI[3.10, 5.52], P<0.000 01), reduced heart rate(MD=-3.79, 95%CI[-7.42,-0.15], P=0.04), left ventricular end-diastolic diameter(MD=-7.06, 95%CI[-11.91,-2.21],P=0.004), left ventricular end-systolic diameter(MD=-4.78, 95%CI[-6.63,-2.93],P<0.000 01), N-terminal B-type natriuretic peptide precursor(MD=-200.51, 95%CI[-254.52,-146.51], P<0.000 01)and high-sensitivity C-reactive protein(MD=-1.74, 95%CI[-3.23,-0.24], P=0.02), all with statistically significant differences. Compared with the control group, Yangxin Dingji Capsules had fewer adverse reactions(RR=0.53, 95%CI[0.36, 0.79], P=0.002). The existing evidences showed that Yangxin Dingji Capsules had certain effect in the treatment of arrhythmia, with a safety. However, due to the limitation in sample size, outcome measures and quality of the included studies, more high-quality studies are required to verify the above conclusion.


Subject(s)
Bradycardia , Capsules , Drugs, Chinese Herbal , Humans , Stroke Volume , Ventricular Function, Left
11.
Article in Chinese | WPRIM | ID: wpr-921666

ABSTRACT

Buyang Huanwu Decoction, a representative prescription in traditional Chinese medicine(TCM) for tonifying Qi and activating blood, has been proved to be effective in preventing and treating acute cerebral infarction(ACI). It consists of Astragali Radix, Angelicae Sinensis Radix, Paeoniae Radix Rubra, Pheretima, Chuanxiong Rhizoma, Carthami Flos, and Persicae Semen, possessing multiple active ingredients. The neurovascular unit is a functionally and structurally interdependent multicellular complex composed of neurons-glial cells-blood vessels. It plays an important role in the pathological changes of cerebral ischemia and the permeability variation of the blood-brain barrier. In recent years, Buyang Huanwu Decoction has been found to protect the integrity of neurovascular units and improve the permeability of the blood-brain barrier, thereby alleviating stroke and other diseases caused by cerebral ischemia. This paper collated and summarized the protective effects of Buyang Huanwu Decoction on neurovascular units.


Subject(s)
Brain Ischemia/drug therapy , Cerebral Infarction , Drugs, Chinese Herbal , Humans , Medicine, Chinese Traditional
12.
Chinese Acupuncture & Moxibustion ; (12): 1089-1094, 2021.
Article in Chinese | WPRIM | ID: wpr-921015

ABSTRACT

OBJECTIVE@#To compare the clinical therapeutic effect between deep needling at Xiaguan (ST 7) with round sharp needle combined with plum-blossom needle and conventional acupuncture in patients with trigeminal neuralgia (TN) of wind and heat, and explore its mechanism.@*METHODS@#A total of 60 patients with TN of wind and heat were randomized into an observation group (30 cases) and a control group (30 cases). In the observation group, deep needling with round sharp needle was applied at Xiaguan (ST 7), and tapping with plum-blossom needle was applied at Yangbai (GB 14), Quanliao (SI 18), Dicang (ST 4), Sibai (ST 2), etc. of affected side. In the control group, conventional acupuncture was applied at the same acupoints selected in the observation group. The treatment was given once a day, 5 times a week for 4 weeks in the both groups. Before and after treatment, the scores of short-form McGill pain questionnaire (SF-MPQ), TCM syndrome, patient global impression of change (PGIC) and comprehensive symptom were observed, the serum levels of interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), vasoactive intestinal peptide (VIP) and β-endorphin (β-EP) were detected, and the adverse reaction was observed in the both groups.@*RESULTS@#After treatment, the scores of PRI, PPI, VAS, TCM syndrome, PGIC and comprehensive symptom and the serum levels of IL-6, TNF-α and VIP were decreased compared before treatment in the both groups (@*CONCLUSION@#Deep needling at Xiaguan (ST 7) with round sharp needle combined with plum-blossom needle can effectively treat the trigeminal neuralgia of wind and heat and relieve pain, its therapeutic effect is superior to conventional acupuncture. The mechanism may be related to the regulation of serum IL-6, TNF-α, VIP and β-EP.


Subject(s)
Flowers , Hot Temperature , Humans , Prunus domestica , Trigeminal Neuralgia/therapy , Wind
13.
Chinese Journal of Urology ; (12): 906-909, 2021.
Article in Chinese | WPRIM | ID: wpr-911147

ABSTRACT

Objective:To evaluate the diagnostic value of serum prostate-specific antigen (PSA) levels and multi-parameter magnetic resonance imaging (mpMRI) in patients with granulomatous prostatitis after intravesical Bacillus Calmette-Guérin (BCG) therapy.Methods:The medical records of eight patients with pathologically proven granulomatous prostatitis in Shandong Provincial Hospital Affiliated to Shandong University from January, 2015 to June, 2020, were enrolled and analyzed in this retrospective study. All 8 patients (ages 47-76, mean 63.6) underwent pelvic mpMRI and serum tPSA levels before TURBT, which showed the results of tPSA, f/t and mpMRI were normal before TURBT (0.45-3.62 ng/ml, 0.20-0.51 and normal signal intensities on T1WI and T2WI, respectively). All patients underwent intravesical BCG therapy after post-TURBT 4-6-weeks’ intravesical gemcitabine therapy as a result of pathologically proven middle and high risk NMIBC via cystoscopy.Results:The results of tPSA levels in all 8 patients were elevated after intravesical BCG therapy after 9-15 months (mean 10.5 months), with 4 patients above 4 (6.77-12.89)ng/ml and 4 patients within the normal ranges(2.02-2.68)ng/ml, and f/t levels decreased to lower than 0.16 (0.09-0.15)in all patients. The mpMRI abnormal signals in all patients were all located in the peripheral zone of prostate. All nodular lesions of prostate mpMRI showed lower signal intensity (SI) on T2WI, higher SI on DWI and lower SI on ADC after BCG therapy. All patients underwent prostate biopsy for abnormal signal on prostate mpMRI. The biopsy pathologic results of all patients were granulomatous prostatitis.Conclusions:When elevated PSA and abnormal signals on prostate mpMRI after intravesical BCG therapy occurred, prostate biopsy may not be required for secondary granulomatous prostatitis patients with non-muscle invasive bladder cancer in combination of clinical history.

14.
Article in Chinese | WPRIM | ID: wpr-888140

ABSTRACT

This study was mainly based on the compatibility of Puerariae Lobatae Radix and Chuanxiong Rhizoma to prepare submicron emulsion and evaluated its physical and pharmaceutical properties. Firstly, pseudo-ternary phase diagrams were drawn by dripping method which took Chuanxiong oil as the oil phase and the area of microemulsion region as the index. On this basis, suitable emulsifier and co-emulsifier were screened for the preparation of Chuanxiong oil submicron emulsion. Then, the formula realizing the largest oil loading was selected. Finally, puerarin substituted part of emulsifier and co-emulsifier to lower their content, so as to form puerarin-Chuanxiong oil submicron emulsion featuring the combination of medicine and adjuvant. Its particle size, zeta potential, centrifugal stability and storage stability were determined, and the in vitro drug release behavior was investigated by dialysis bag method, based on which the quality of the as-prepared submicron emulsion was evaluated comprehensively. The proposed method was proved feasible for the preparation of Chuanxiong oil submicron emulsion, which adopted polyoxyethylene castor oil(EL-40) as the emulsifier and was free from co-emulsifier. The formula of the maximum oil loading was found as Chuanxiong oil∶EL-40∶water 3∶7∶90. Further, puera-rin successfully replaced up to 10% of the emulsifier in submicron emulsion. Eventually, the optimal drug-loading formula was determined as puerarin∶Chuanxiong oil∶EL-40∶water 7∶30∶63∶900. The quality evaluation results of the as-prepared submicron emulsion demonstrated that the average emulsion droplet size was 333.9 nm, the PDI 0.26, and the zeta potential-10.12 mV. The submicron emulsion had a good centrifugal stability and did not present any instable phenomena such as delamination and precipitation during its standing still for 50 days. The evaluation of in vitro drug release behavior indicated that the submicron emulsion was capable of releasing the drug completely. The puerarin-chuanxiong oil submicron emulsion prepared in this study possessed a stable quality and to some extent increased the solubility of puerarin along with a sustained-release effect. This study provided ideas for the clinical application of puerarin.


Subject(s)
Emulsions , Isoflavones , Particle Size , Solubility
15.
Article in Chinese | WPRIM | ID: wpr-887948

ABSTRACT

Tumor metastasis is an important cause of tumor treatment failure. Its molecular mechanism is closely related to tumor cells remodeling immune cells and immunosuppressive microenvironment, so as to create a suitable soil for tumor cell invasion and growth. "Huoxue Huayu" is one of the important therapeutic principles in cancer treatment, but the influence of Huoxue drugs on tumor metastasis has been controversial in clinical application. In this paper, we systematically summarized the comparative study of Huoxue drugs and Yiqi Huoxue drugs in tumor metastasis in recent years, and discussed the differences of molecular mechanisms of Huoxue drugs and Yiqi Huoxue drugs in anti-tumor metastasis from the perspective of immune remodeling, so as to provide scientific basis for clinical rational application of Huoxue drugs and Yiqi Huoxue drugs.

16.
Article in Chinese | WPRIM | ID: wpr-887486

ABSTRACT

The survey is conducted prior to the development of international standard,


Subject(s)
Acupuncture , Acupuncture Therapy , Humans , Migraine Disorders/therapy , Moxibustion , Surveys and Questionnaires
17.
Acta Pharmaceutica Sinica ; (12): 2378-2382, 2021.
Article in Chinese | WPRIM | ID: wpr-886962

ABSTRACT

GeXIVA[1,2] is a new type of conotoxin recently discovered in the transcriptome of Conus generalis and it is expected to be used clinically as a new type of analgesic. This study established and verified a sandwich enzyme-linked immunosorbent assay method for the marine drug GeXIVA[1,2] in the plasma of rats and Beagle dogs. The mouse monoclonal antibody 4B2 and biotin-labeled rabbit polyclonal antibody 2# were developed. The checkerboard method was used to optimize the antibody pairing concentration, minimum dilution ratio, incubation temperature, and incubation time to establish an antibody sandwich ELISA detection method. Verify the established testing methods. The established ELISA method has a quantitative range of 1.25-80 ng·mL-1 in rat and Beagle plasma. The precision, accuracy, selectivity, specificity, stability, dilution linearity, and hook effect all meet the requirements for biological sample analysis. All the procedures for the animal experiments were approved by the Animal Ethics Committee of the Institute (Permit Number: IACUC-DWZX-2020-698). This method can support the preclinical pharmacokinetic study of the marine drug GeXIVA.

18.
Acta Pharmaceutica Sinica ; (12): 2536-2543, 2021.
Article in Chinese | WPRIM | ID: wpr-886938

ABSTRACT

Kidney injury and decreased chemosensitivity of tumor cells are obstacles with cisplatin (CDDP) chemotherapy. Down-regulation of the organic cation transporter 2 (OCT2) and multidrug resistance-associated protein 2 (MRP2) is a key means to alleviate CDDP-induced kidney injury and increase chemosensitivity. Astragaloside IV (AS IV) is obtained from the well-known traditional Chinese herb Astragalus membranaceus. This study explored the role of AS IV in preventing kidney injury and enhancing the antitumor effect of CDDP by suppressing OCT2 expression in kidney and MRP2 in tumors. This project was reviewed and approved by the Animal Ethics Committee of the First Hospital of Jilin University. The effects of AS IV on CDDP inhibition of tumor growth and promotion of apoptosis were assessed in Lewis lung tumor (LLC)-bearing mice by H&E and TUNEL staining. Kidney injury was assessed by serum biochemical parameters and H&E staining. We used Western blotting and immunohistochemistry assays to detect OCT2 and MRP2 expression in kidney and tumor. The concentration of CDDP in kidney and tumor was measured by HPLC-MS/MS. AS IV enhanced CDDP chemosensitivity by increasing tumor cell apoptosis and slowing tumor growth, and decreased kidney injury as evidenced by lower blood creatinine (Cr) and blood urea nitrogen (BUN). Co-administration of AS IV suppressed MRP2 overexpression induced by CDDP in tumor tissues and may be an important mechanism for enhancing CDDP chemosensitivity. Moreover, AS IV reduced CDDP-induced kidney injury in mice along with suppression of OCT2 expression in kidney. The concentration of CDDP was increased in tumor but decreased in kidney. In total, AS IV not only enhanced the antitumor effect of CDDP by suppressing MRP2 expression in tumor cells, but also decreased kidney injury induced by CDDP. The results provide new insight into the combined use of a chemotherapy drug and natural ingredients to treat cancer.

19.
Article in Chinese | WPRIM | ID: wpr-886757

ABSTRACT

Objective To investigate the population dynamics and Echinococcus infections in small rodents around human settlement in Yushu City, Qinghai Province. Methods Rodents were captured using the mouse trap method in pastures from Batang Township and Longbao Township of Yushu City, Qinghai Province on May, August and October, 2018. The body weight and snout-vent length of all captured rodents were measured, and the species was identified according to the rodent morphology. Genomic DNA was extracted from rodent liver specimens and lesion specimens, and the mitochondrial cox1 gene of Echinococcus was amplified using PCR assay for identification of parasite species. In addition, the tissue specimens positive for PCR assay were sampled for pathological examinations. The prevalence of Echinococcus infections was estimated in rodents, and a phylogenetic tree was created based on Echinococcus cox1 gene sequences. Results A total of 285 small rodents were captured, including 143 Ochotona curzoniae (50.2%), 141 Lasiopodomys fuscus (49.5%), and 1 Neodon irene (0.3%), and there was a remarkable variation in habitat selection among these three rodent species. The number of L. fuscus correlated positively with vegetation coverage (r = 0.350, P = 0.264), with the greatest number seen in August, and the number of O. curzoniae negatively with vegetation coverage (r = −0.371, P = 0.235), with the highest number seen in August and the lowest number in May. The female/male ratios of O. curzoniae and voles were 1:0.96 and 0.82:1, respectively. The body weight (r = 0.519, P < 0.01) and snout-vent length (r = 0.578, P < 0.01) of O. curzoniae showed a tendency towards a rise with month, while the body weight (r = −0.401, P < 0.01) and snout-vent length (r = −0.570, P < 0.01) of voles presented a tendency towards a reduction with month. No Echinococcus infection was detected in voles, while 2.1% prevalence of E. shiquicus infection was seen in O. curzoniae. Phylogenetic analysis revealed consistent sequences of cox1 gene from E. shiquicus in Yushu City of Qinghai Province and Shiqu County, Ganzi Tibetan Autonomous Prefecture of Sichuan Province. Conclusions The small rodents around the human settlement in Yushu City of Qinghai Province mainly include O. curzoniae and L. fuscus, with the greatest numbers seen in May and August, respectively. Following the concerted efforts for echinococcosis control, the prevalence of Echinococcus infections is low in small rodents around the human settlement in Yushu City; however, there is still a risk of echinococcosis transmission.

20.
Article in Chinese | WPRIM | ID: wpr-882033

ABSTRACT

Objective To identify the environmental factors affecting the distribution of suitable habitats of Ixodes ovatus, and to examine the effects of environmental changes on the distribution of suitable habitats of I. ovatus. Methods Data pertaining to the distribution of I. ovatus in China were captured by literature review. The distribution of suitable habitats of I. ovatus in China was simulated using the maximum entropy model with the environmental variable data and the I. ovatus distribution data. In addition, the potential distribution of suitable habitats of I. ovatus was predicted based on the 2050 and 2070 environmental data. Results The current suitable habitats of I. ovatus cover 3.11 million km2, accounting for 32.28% of the total land area of China, and they are mainly concentrated in southwestern and northwestern China. Among the screened 16 environmental factors, the standard deviation of seasonal variation of temperature, average annual precipitation and altitude were predominant environmental factors affecting the distribution of suitable habitats of I. ovatus, and these three variables contributed 76.5% to the distribution of suitable habitats of I. ovatus in China. The suitable habitats of I. ovatus were predicted to showing a tendency towards expansion to northwestern and northeastern China in 2050 and 2070, and the proportion of highly suitable habitats of I. ovatus was predicted to increase. Conclusions Moderate climate, adequate precipitation and high altitude are favorable for the survival of I. ovatus. Future climate changes may cause expansion of suitable habitats of I. ovatus in China.

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