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1.
Chinese Journal of Reparative and Reconstructive Surgery ; (12): 982-988, 2023.
Article in Chinese | WPRIM | ID: wpr-1009012

ABSTRACT

OBJECTIVE@#To investigate the effectiveness of preemptive analgesia with imrecoxib on analgesia after anterior cruciate ligament (ACL) reconstruction.@*METHODS@#A total of 160 patients with ACL injuries who met the selection criteria and were admitted between November 2020 and August 2021 were selected and divided into 4 groups according to the random number table method (n=40). Group A began to take imrecoxib 3 days before operation (100 mg/time, 2 times/day); group B began to take imrecoxib 1 day before operation (100 mg/time, 2 times/day); group C took 200 mg of imrecoxib 2 hours before operation (5 mL of water); and group D did not take any analgesic drugs before operation. There was no significant difference in gender, age, body mass index, constituent ratio of meniscal injuries with preoperative MRI grade 3, constituent ratio of cartilage injury Outerbridge grade 3, and visual analogue scale (VAS) score at the time of injury and at rest among 4 groups (P>0.05). The operation time, hospitalization stay, constituent ratio of perioperative American Society of Anesthesiologists (ASA) grade 1, postoperative opioid dosage, and complications were recorded. The VAS scores were used to evaluate the degree of knee joint pain, including resting VAS scores before operation and at 6, 24, 48 hours, and 1, 3, 6, and 12 months after operation, and walking, knee flexion, and night VAS scores at 1, 3, 6, and 12 months after operation. The knee injury and osteoarthritis score (KOOS) was used to evaluate postoperative quality of life and knee-related symptoms of patients, mainly including pain, symptoms, daily activities, sports and entertainment functions, knee-related quality of life (QOL); and the Lysholm score was used to evaluate knee joint function.@*RESULTS@#All patients were followed up 1 year. There was no significant difference in operation time, hospitalization time, or constituent ratio of perioperative ASA grade 1 among 4 groups (P>0.05); the dosage of opioids in groups A-C was significantly less than that in group D (P<0.05). Except for 1 case of postoperative fever in group B, no complications such as joint infection, deep vein thrombosis of the lower extremities, or knee joint instability occurred in each group. The resting VAS scores of groups A-C at 6 and 24 hours after operation were lower than those of group D, and the score of group A at 6 hours after operation was lower than those of group C, and the differences were significant (P<0.05). At 1 month after operation, the knee flexion VAS scores of groups A-C were lower than those of group D, the walking VAS scores of groups A and B were lower than those of groups C and D, the differences were significant (P<0.05). At 1 month after operation, the KOOS pain scores in groups A-C were higher than those in group D, there was significant difference between groups A, B and group D (P<0.05); the KOOS QOL scores in groups A-C were higher than that in group D, all showing significant differences (P<0.05), but there was no significant difference between groups A-C (P>0.05). There was no significant difference in VAS scores and KOOS scores between the groups at other time points (P>0.05). And there was no significant difference in Lysholm scores between the groups at 1, 3, 6, and 12 months after operation (P>0.05).@*CONCLUSION@#Compared with the traditional analgesic scheme, applying the concept of preemptive analgesia with imrecoxib to manage the perioperative pain of ACL reconstruction can effectively reduce the early postoperative pain, reduce the dosage of opioids, and promote the early recovery of limb function.


Subject(s)
Humans , Quality of Life , Analgesics, Opioid , Analgesia , Osteoarthritis, Knee , Pain, Postoperative/prevention & control , Anterior Cruciate Ligament Reconstruction , Knee Injuries
2.
Nutrition Research and Practice ; : 26-37, 2021.
Article in English | WPRIM | ID: wpr-875341

ABSTRACT

BACKGROUND/OBJECTIVES@#Hyperuricemic nephropathy is a common cause of acute kidney injury. Resveratrol can ameliorate kidney injury, but the explicit mechanism remains unclear.We investigated the effects of resveratrol on the inflammatory response and renal injury in hyperuricemic rats.MATERIALS/METHODS: A rat model of hyperuricemic nephropathy was established by the oral administration of a mixture of adenine and potassium oxinate. Biochemical analysis and hematoxylin and eosin staining were performed to assess the rat kidney function. Enzymelinked immunosorbent assays were performed to evaluate the immune and oxidative responses. @*RESULTS@#The expression levels of urine albumin and β2-microglobulin were significantly decreased after resveratrol treatment. In addition, the levels of serum creatinine and uric acid were significantly decreased in the resveratrol groups, compared with the control group.The levels of proinflammatory factors, such as interleukin-1β and tumor necrosis factor-α, in kidney tissue and serum were also increased in the hyperuricemic rats, and resveratrol treatment inhibited their expression. Moreover, the total antioxidant capacity in kidney tissue as well as the superoxide dismutase and xanthine oxidase levels in serum were all decreased by resveratrol treatment. @*CONCLUSIONS@#Resveratrol may protect against hyperuricemic nephropathy through regulating the inflammatory response.

3.
Chinese Journal of Applied Clinical Pediatrics ; (24): 50-53, 2021.
Article in Chinese | WPRIM | ID: wpr-882756

ABSTRACT

Objective:To investigate the prevalence of autism spectrum disorders (ASD)among children in kindergartens in Xi′an urban districts.Methods:A stratified cluster sampling method was adopted, and selected all children from 12 kindergartens in 6 urban districts of Xi′an.Primary screening positive children with ASD were identified by filling out the Autism Behavior Checklist (ABC) by their parents and the guardians reports, and then the beha-vioral observations were made to identify suspicious ASD children.Finally these children were diagnosed in the hospital through the autism diagnostic observation schedule, 2 nd edition (ADOS-2). The data were calculated with SPSS 18.0. Results:Totally, 38 cases with ASD were diagnosed among 5 178 children, the prevalence of children ASD in kindergartens in Xi′an urban districts was 7.3‰, and the 95% confidence interval was 4.98‰-9.62‰.The prevalence of ASD in children was statistically significant in different age groups ( χ2=9.914, P<0.05) and gender groups ( χ2=18.812, P<0.05). The accuracy of ASD screening by guardians reports is better than that by ABC. Conclusions:(1)The prevalence of ASD children in kindergartens in Xi′an urban districts is at high level in similar reports in China.If ASD children at the special education institutions and home are considered, the overall prevalence rate is higher, indicating that the prevalence of ASD children in China may be underestimated.(2)With the increase of age, the attendance rate of ASD children in kindergartens has a decreasing trend.

4.
Chinese Journal of Pediatrics ; (12): E011-E011, 2020.
Article in Chinese | WPRIM | ID: wpr-811509

ABSTRACT

Objective@#To analyze the epidemiological history, clinical manifestations, treatment and the short-term prognosis of 31 cases of 2019 novel coronavirus(2019-nCoV) infection in children from six provinces (autonomous region) in northern China.@*Methods@#A retrospective analysis of the epidemiological history, clinical symptoms, signs, laboratory examinations, chest imaging, treatment and the short-term prognosis of 31 cases of 2019-nCoV was conducted. The patients were diagnosed between January 25th, 2020 and February 21st, 2020 in 21 hospitals in 17 cities of six provinces(autonomous region) of Shaanxi, Gansu, Ningxia, Hebei, Henan and Shandong.@*Results@#The age of the 31 children with 2019-nCoV infection was 7 years and 1 month (6 months -17 years). Nine cases (29%) were imported cases. Other 21 cases (68%) had contact with confirmed infected adults. One case (3%) had contact with asymptomatic returnees from Wuhan. Among the 31 children, 28 patients (90%) were family cluster cases. The clinical types were asymptomatic type in 4 cases (13%), mild type in 13 cases (42%), and common type in 14 cases (45%). No severe or critical type existed. The most common symptom was fever (n=20, 65%), including 1 case of high fever, 9 cases of moderate fever, 10 cases of low fever. Fever lasted from 1 day to 9 days. The fever of fifteen cases lasted for ≤3 d, while in other 5 cases lasted > 3 d. Other symptoms included cough (n=14, 45%), fatigue (n=3, 10%) and diarrhea (n=3, 9%). Pharyngalgia, runny nose, dizziness, headache and vomiting were rare. In the early stage, the total leukocytes count in peripheral blood decreased in 2 cases (6%), the lymphocytes count decreased in 2 cases (6%), and the platelet count increased in 2 cases (6%).Elevation of C-reactive protein (10%, 3/30), erythrocyte sedimentation rate(19%,4/21), procalcitonin(4%,1/28), liver enzyme(22%, 6/27) and muscle enzyme (15%, 4/27) occurred in different proportions. Renal function and blood glucose were normal. There were abnormal chest CT changes in 14 cases, including 9 cases with patchy ground glass opacities and nodules, mostly located in the lower lobe of both lungs near the pleural area. After receiving supportive treatment, the viral nucleic acid turned negative in 25 cases within 7-23 days. Among them, 24 children (77%) recovered and were discharged from hospital. No death occurred.@*Conclusions@#In this case series, 2019-nCoV infections in children from six provinces (autonomous region) in northern China are mainly caused by close family contact. Clinical types are asymptomatic, mild and common types. Clinical manifestations and laboratory examination results are nonspecific. Close contact history of epidemiology, nucleic acid detection and chest imaging are important bases for diagnosis. After general treatment, the short-term prognosis is good.

5.
International Journal of Surgery ; (12): 843-846, 2016.
Article in Chinese | WPRIM | ID: wpr-515472

ABSTRACT

Type B aortic dissection is a life-threatening aortic disease.With the development of clinical classification and diagnostic method,the mortality of type B aortic dissection has been greatly decreased.In respect of treatment,endovascular repair due to minimally invasive advantages become the first choice for the treatment of complicated type B aortic dissection.For non-complicated type B aortic dissection,endovascular repair also gradually replace drug treatment,and showed good efficacy.Open surgery is only available for patients who ate not suitable for endovascular repair or repair failure or patients with connective tissue disease.

6.
Chongqing Medicine ; (36): 1053-1055, 2016.
Article in Chinese | WPRIM | ID: wpr-490959

ABSTRACT

Objective To study the therapeutic effect of the thrombus suction and direct percutaneous coronary intervention (PCI) for elderly patients with acute ST segment elevation myocardial infarction (STE‐MI) .Methods A total of 124 elderly pa‐tients with acute STE‐MI in our hospital from September 2012 to September 2014 were collected and divided into two groups(under the agreement of patients and family members) ,the experimental group (56 cases) was treated with thrombus suction and direct PCI ,while the control group (68 cases) was only treated with PCI treatment ;the postoperative immediate TIMI flow of coronary artery ,postoperative corrected TIMI frame count (CTFC) ,levels of myoglobin ,cTnT and CK‐MB ,percentage of ST elevation back over 50% ,postoperative 6-month follow‐up situation were observed in the two groups .Results The percentage of postoperative ST segment elevation drop>50% at postoperative 1 h in the experimental group was significantly higher than that in the control group (P0 .05);the percentage of LVEF>50% in the experimental group was significantly higher than that in the control group(P50% in the two groups had statistical differ‐ence between before and after operation(P<0 .05) .Conclusion Clinical curative effect of thrombus suction and direct PCI for eld‐erly patients with acute STE‐MI is superior to simple direct PCI treatment .

7.
Chinese Journal of Medical Aesthetics and Cosmetology ; (6): 122-125, 2013.
Article in Chinese | WPRIM | ID: wpr-436563

ABSTRACT

Objective To compare the epidermal shape built by different passages of keratinocytes and its ability of proliferation and differentiation in three-dimensional conditions.Methods Different passages of keratinocytes were used to construct tissue-engineered skin.The morphology of the tissue-engineered skin was observed with HE and PAS staining,while CK1/CK10,CK5/CK14,Ki67 were detected by immunohistochemical assays.Results All the tissue-engineered skin had a significant dermoepidermal structure.The stratification of 1st and 2nd passage skins were better,and 2nd passage epidermis was thicker than that in other passages (P<0.05).Dermoepidermal structure in collagen type Ⅳ group binded more tightly,but collagen type Ⅳ had little effect on the thickness of the epidermis (P>0.05).In collagen type Ⅳ group PAS stain was negative,indicating type Ⅳ collagen was unable to promote the reconstruction of BM in vitro.The Ki-67 proliferation index of the 2nd keratinocyte was similar to the normal skin,the remaining passages keratinocyte proliferation gradually decreased (P<0.05) ; the 1st and 2nd passage skins expressed CK1/CK10 and CK5/CK14.Conclusions Keratinocytes before the 3rd passage have a better ability in the proliferation and differentiation,and so they are more suitable as seed cells for tissue-engineered skin.

8.
Chinese Journal of Medical Education Research ; (12): 430-432, 2013.
Article in Chinese | WPRIM | ID: wpr-436032

ABSTRACT

Dermatology and venerology is a clinical discipline characterized by morphology.With the development of the internet and the application of internet in education,the features and advantages of internet teaching are gradually recognized including high flexibility,rich information and good student-teacher interaction.This article focused on the establishment and practice of internet teaching to improve teaching quality.

9.
Chinese Journal of Gastrointestinal Surgery ; (12): 455-458, 2013.
Article in Chinese | WPRIM | ID: wpr-357212

ABSTRACT

<p><b>OBJECTIVE</b>To summarize the preliminary experience of laparoscopic surgery in the treatment of radiogenic small bowel damage.</p><p><b>METHODS</b>Clinical data of 12 patients with radiogenic small bowel damage undergoing laparoscopic operation in our department from January 2012 to January 2013 were retrospectively reviewed.</p><p><b>RESULTS</b>Two patients were transferred to laparotomy because of dense adhesion in the entire abdomen and uncertainty of metastatic malignancy, respectively. The laparoscopic surgery was successfully performed in other 10 patients. Three patients received enterostomy or colostomy because of intestinal obstruction or bleeding. Among the other seven patients who underwent intestinal resection and anastomosis, intestinal anastomosis was performed with an small adjunvant incision in the former two cases and performed under laparoscopy in the latter five cases. The post-operative complication included one anastomotic fistula.</p><p><b>CONCLUSION</b>Laparoscopic surgery can be safely used in radiogenic small bowel damage patients, which can avoid the delayed incision healing.</p>


Subject(s)
Humans , Colostomy , Intestinal Obstruction , General Surgery , Intestine, Small , General Surgery , Laparoscopy , Laparotomy
10.
Acta Pharmaceutica Sinica ; (12): 594-599, 2012.
Article in Chinese | WPRIM | ID: wpr-276275

ABSTRACT

In this study, cepharanthine hydrochloride (CH) was tested for its potential ability to modulate the expression and function of P-glycoprotein (P-gp) in the multidrug-resistant human chronic myelogenous leukemia cell line K562/ADR. Cytotoxicity of adriamycin (ADR) alone or in combination with CH or verapamil (VER) in K562 and K562/ADR cells was determined by MTT assay. Based on flow cytometric technology, the effect of CH or VER on the uptake and efflux of rhodamine123 (Rho123) and the accumulation of ADR in these cells was detected by measuring Rho123 or ADR-associated mean fluorescence intensity (MFI). The effects of CH and VER on P-glycoprotein (P-gp) expression in K562 and K562/ADR cells were also measured using a flow cytometry with PE-conjugated P-glycoprotein antibody. The results show that CH significantly enhanced the sensitivity of K562/ADR cells to ADR, 4 micromol x L(-1) of CH enhanced the sensitivity of K562/ADR cells to ADR by 7.43 folds, the reversal activity was 3.19 times higher than that of verapamil. However, CH had no effect on drug-sensitive K562 cells (P < 0.05). CH increased Rho123 and ADR accumulation in a concentration-dependent manner (2-8 micromol x L(-1)) and inhibited the efflux of Rho123 from these cells, but did not affect the accumulation and efflux of Rho123 from the wild-type drug-sensitive K562 cells. The inhibition effect of CH on P-gp expression in K562/ADR cells is in a time- and concentration-dependent manner. The reversal activity of CH is possibility related to inhibition of P-gp function and expression, which lead to an increased intracellular accumulation of anticancer drugs.


Subject(s)
Humans , ATP Binding Cassette Transporter, Subfamily B, Member 1 , Metabolism , Antibiotics, Antineoplastic , Metabolism , Pharmacology , Antineoplastic Agents, Phytogenic , Pharmacology , Benzylisoquinolines , Pharmacology , Dose-Response Relationship, Drug , Doxorubicin , Metabolism , Pharmacology , Drug Resistance, Multiple , Drug Resistance, Neoplasm , K562 Cells , Rhodamine 123 , Metabolism
11.
Chinese Journal of Otorhinolaryngology Head and Neck Surgery ; (12): 237-239, 2011.
Article in Chinese | WPRIM | ID: wpr-277479

ABSTRACT

<p><b>OBJECTIVE</b>To study the expressions of Piwil2 protein and mRNA in papillary thyroid carcinoma (PTC) and the relationship between Piwil2 and the invasion and metastasis of PTC.</p><p><b>METHODS</b>Immunohistochemistry and in situ hybridization were used to detect the expression of Piwil2 protein and mRNA in 60 cases of PTC with the matched adjacent non-cancerous epithelium (NCE).</p><p><b>RESULTS</b>The positive rates of Piwil2 protein expression in PTC and NCE were 88.3% (53/60) and 10.0% (6/60) respectively, with significant difference (χ² = 73.654, P < 0.01). The positive rates of Piwil2 mRNA expression in PTC and NCE were 85.0% (51/60) and 6.7% (4/60) respectively, also with significant difference (χ(2) = 74.148, P < 0.01). Up-regulated expressions of Piwil2 protein and mRNA were related to the invasion and metastasis of PTC (P < 0.05).</p><p><b>CONCLUSIONS</b>Piwil2 may play a role in the invasion and metastasis of PTC.</p>


Subject(s)
Adolescent , Adult , Aged , Child , Female , Humans , Male , Middle Aged , Young Adult , Argonaute Proteins , Carcinoma , Carcinoma, Papillary , Lymphatic Metastasis , Proteins , Genetics , Metabolism , RNA, Messenger , Genetics , Thyroid Neoplasms , Metabolism , Pathology
12.
Chinese Journal of Otorhinolaryngology Head and Neck Surgery ; (12): 417-419, 2011.
Article in Chinese | WPRIM | ID: wpr-250270

ABSTRACT

<p><b>OBJECTIVE</b>To study the relationship between status of methylation of human runt-related transcription factor 3 (RUNX3) gene promoter in papillary thyroid carcinoma (PTC).</p><p><b>METHODS</b>Methylation-specific PCR and immunohistochemical SP technique were used to detect the methylation of RUNX3 gene promoter and expression of its protein in 56 cases of PTC and their matched adjacent non-carcinous epithelium (NCE).</p><p><b>RESULTS</b>In NCE, there was no methylation of RUNX3 gene promoter, while in PTC the methylation rate was 35.7%(20/56), which was related to the tumor TNM stage, pathological grade and lymph node metastasis (P < 0.05). The positive rates of RUNX3 protein expression in NCE and PTC were 100.0% and 60.7%, respectively, with a significant difference (χ(2) = 27.378, P < 0.05). In PTC, the positive rates of RUNX3 protein expression in gradeI and grade II were 70.0% and 37.5%, respectively (P < 0.05); the rates were 46.7% and 76.9% in lymph node metastasis group and no metastasis group, respectively (P < 0.05). Moreover, there was a distinct correlation between methylation of RUNX3 gene promoter and expression of its protein (χ(2) = 21.62, P < 0.01).</p><p><b>CONCLUSIONS</b>Methylation of promoter might be one of the important factors of inactivation of RUNX3 gene, and might play an important role in carcinogenesis and progression of PTC.</p>


Subject(s)
Adolescent , Adult , Aged , Female , Humans , Male , Middle Aged , Young Adult , Carcinoma , Carcinoma, Papillary , Core Binding Factor Alpha 3 Subunit , Genetics , Metabolism , DNA Methylation , Promoter Regions, Genetic , RNA, Messenger , Genetics , Thyroid Neoplasms , Metabolism , Pathology
13.
Chinese Journal of Integrated Traditional and Western Medicine ; (12): 313-316, 2009.
Article in Chinese | WPRIM | ID: wpr-337515

ABSTRACT

<p><b>OBJECTIVE</b>To observe the effects of Astragalus Injection (AI) on renal function in patients after cardiac valve replacement with cardiopulmonary bypass (CPB).</p><p><b>METHODS</b>Forty patients scheduled to receive cardiac valve replacement with CPB were randomly assigned to 2 groups equally, the control group and the AI group. Patients in the AI group were administered with AI 40 mL before anesthesia by diluting it in 250 mL 5% glucose solution via intravenous dripping, 20 mL by adding it into the priming solution before CPB and 40 mL once a day diluted as before via intravenous dripping at the foremost 5 successive days after operation. For patients in the control group, equal volume of Ringer's Liquid was given instead of AI. Peripheral blood sample and urine were collected at various time points: before anesthesia (T0), the 1st (T1), 3rd (T3), 5th (T5) and 7th day (T7) after operation, for determining blood levels of urea nitrogen (BUN), creatinine (Cr) and beta2-microglobulin (beta2-MG), as well as urinary levels of beta2-MG, microalbumin (m-Alb) and N-acetyl-D-glucosaminidase (NAG).</p><p><b>RESULTS</b>As compared with those at T0, in the control group, BUN, Cr at T1 and T3, serum beta2-MG at T3, urinary beta2-MG m-Alb and NAG at T1-T7 were significantly higher, while in the AI group, urinary m-Alb, NAG at T1-5 n and urinary beta2-MG at T1-7 were higher (P < 0.05). As compared with those in the control group, serum BUN at T1-3., Cr and blood beta2-MG at T3, urinary beta2-MG, m-Alb and NAG at T1-7 were lower (P < 0.05) in the AI group.</p><p><b>CONCLUSION</b>CPB could induce renal failure, and applying AI at the perioperative stage can protect renal function to some certain extent.</p>


Subject(s)
Adult , Female , Humans , Male , Middle Aged , Astragalus propinquus , Chemistry , Cardiopulmonary Bypass , Drugs, Chinese Herbal , Therapeutic Uses , Heart Valve Prosthesis Implantation , Kidney , Kidney Function Tests , Phytotherapy , Protective Agents , Therapeutic Uses , Rheumatic Heart Disease , General Surgery
14.
Chinese Journal of Practical Nursing ; (36)2006.
Article in Chinese | WPRIM | ID: wpr-527944

ABSTRACT

Objective To improve the traditional nursing method in the postoperative children with cheiloplasty. Method Using the arm clipboards in 150 postoperative children with cheiloplasty, and then expanded using in 120 children who have accepted other surgery operation. Observed the nursing effects among these children. Results The nursing effects when using this kind of arm clipboards was significant, the re-injection rate was reduced. Conclusion Using arm clipboards among postoperative children can effective improve the nursing quality, and then increase the satisfaction of patients.

15.
Chinese Journal of Integrated Traditional and Western Medicine in Intensive and Critical Care ; (6)2006.
Article in Chinese | WPRIM | ID: wpr-674371

ABSTRACT

Objective To study the effect of Shenqi Fuzheng injection (SQFZI,参芪扶正注射液) on renal function in patients after cardiac surgery and cardiopulmonary bypass (CPB).Methods Forty patients ready for receiving CPB and cardiac surgery were randomly assigned to two groups,20 being in each group. Patients in the SQFZI group were administered of 250 ml SQFZI intravenously before anesthesia,125 ml SQFZI before CPB in CPB mechanical equipment,and 250 ml SQFZI once a day after operation for 3 days. Equal volume balanced solution was received in control group.Creatinine (Cr) in blood and Cr,microalbumin (m-Alb),?_2-microglobulin (?_2-MG) and N-acetylglucosaminidase (NAG) in urine were measured and endogeneous creatinine clearance (CCr) was calculated in 40 patients at the time points of before anesthesia, at the end of operation,and 1,3 and 5 days after operation.Results Urinary levels of m-Alb,?_2-MG and NAG were increased significantly after CPB in both groups at different time points at the end of and after the operation (all P0.05).Conclusion CPB has a deteriorating effect on renal function,and the application of SQFZI in peri-operational period has a protective effect on renal function in patients who undergo CPB.

16.
Acta Pharmaceutica Sinica ; (12): 204-207, 2005.
Article in Chinese | WPRIM | ID: wpr-241327

ABSTRACT

<p><b>AIM</b>To investigate the correlation between reversal effect of cepharanthine hydrochloride (CH) on multidrug resistance (MDR) in drug-resistant cell line EAC/ADR and the nuclear transcription factor-KB (NF-KB).</p><p><b>METHODS</b>Cytotoxicity was determined by the tetrazolium (MTT) assay in vitro. An EAC/ADR cell homograft model was established to investigate the effect of CH on reversing MDR in vivo. The constitutive activity and activation of NF-KB by drugs were measured by Dot-Enzyme-linked Immune Sorbent Assay (Dot-ELISA).</p><p><b>RESULTS</b>CH was shown to potentiate the cytotoxicity of ADR, a 13- fold reversal effect of resistance was achieved in vitro. In mice bearing EAC/ADR cell homografts, CH was found to prolong the survival time of animals bearing tumor. Increase in life span over control was 75. 37%. In addition, the constitutive activity of NF-KB and activation of NF-KB by chemotherapy were lowered by CH.</p><p><b>CONCLUSION</b>The findings suggest that CH is able to reverse drug resistance and its mechanism may be related to suppressing the constitutive activity and activation of NF-KB by drugs.</p>


Subject(s)
Animals , Female , Male , Mice , Alkaloids , Pharmacology , Antineoplastic Agents, Phytogenic , Pharmacology , Benzylisoquinolines , Carcinoma, Ehrlich Tumor , Drug Therapy , Metabolism , Pathology , Cell Line, Tumor , Drug Resistance, Multiple , Drug Resistance, Neoplasm , NF-kappa B , Metabolism , Neoplasm Transplantation , Plant Roots , Chemistry , Plants, Medicinal , Chemistry , Random Allocation , Stephania , Chemistry
17.
Acta Pharmaceutica Sinica ; (12): 865-868, 2004.
Article in Chinese | WPRIM | ID: wpr-302717

ABSTRACT

<p><b>AIM</b>To investigate the effect of oridonin (ORI) on telomerase activity and cell cycle of human leukemic cell line K562 cells.</p><p><b>METHODS</b>Immunohistochemistry (IHC) technique was used to determine the expression of hTERT or C-myc. Telomerase activity was detected with TRAP-PCR-ELISA assay. In addition, the percentages of K562 cells in different cell cycle were determined by flow cytometry (FCM) at 24th and 48th hours separately after adding the different concentrations of ORI.</p><p><b>RESULTS</b>After the K562 cells were treated with ORI at 3.43 micromol x L(-1) for 48 h, the expression of hTERT and C-myc decreased obviously. There was statistical significant (P < 0.05) difference between experimental groups and the normal controls. In addition, the telomerase activity of K562 cells was significantly inhibited by ORI at the dose of 3.43 micromol x L(-1) for 48 h. At the same time, the cell cycle distribution changed, the percentage of G0/G1 or G2/M stages cells increased and that of the S stage cells decreased after ORI was added.</p><p><b>CONCLUSION</b>ORI can effectively inhibit telomerase activity in K562 cells. Arresting cell cycle and decreasing the expression of hTERT and C-myc may be the mechanism of action.</p>


Subject(s)
Humans , Antineoplastic Agents, Phytogenic , Pharmacology , Cell Cycle , DNA-Binding Proteins , Diterpenes , Pharmacology , Diterpenes, Kaurane , Isodon , Chemistry , K562 Cells , Plants, Medicinal , Chemistry , Proto-Oncogene Proteins c-myc , Metabolism , Telomerase , Metabolism
18.
Acta Physiologica Sinica ; (6): 179-182, 2002.
Article in Chinese | WPRIM | ID: wpr-279315

ABSTRACT

In this paper we present an easily available method of intracellular dialysis via a microcatheter inserted into glass pipette during patch clamp experiment. An oblique hole through the glass pipette holder (above the lateral hole for cell-seal suction) is drilled, through which a microcatheter (O.D.=0.1 mm) made from the universal pipetter tip by hand-drawing passes and sticks out of the holder mouth in parallel with the Ag-AgCl electrode. With a syringe connected to the microcatheter, substitution of intracellular solution and intracellular dialysis of drugs can be achieved easily. Compared with repatch technique and intracellular solution substitution techniques used abroad, this method operates more easily and can produce more reliable results.


Subject(s)
Dialysis , Methods , Equipment Design , Microelectrodes , Patch-Clamp Techniques
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