Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 17 de 17
Filter
Add more filters










Publication year range
1.
Oral Maxillofac Surg ; 2024 May 01.
Article in English | MEDLINE | ID: mdl-38691260

ABSTRACT

OBJECTIVE: To analyze the types and causes of complications following orbital fracture reconstruction and enhance clinicians' capacity to manage or prevent such complications. METHODS: We conducted a retrospective case series analysis, retrospectively collecting and analyzing clinical data of patients with orbital fractures who received surgical treatment at the Affiliated Eye Hospital of Nanchang University from May 2012 to May 2022. Descriptive statistics were employed to document common postoperative complications, and we recorded complications persisting after a minimum 6-month follow-up period. RESULTS: Among the 227 patients who underwent orbital fracture surgery, they were followed up for 6 to 36 months, and complications occurred in 15 cases, resulting in an incidence rate of 6.61%. These complications included implant material infections and rejections (4 cases), persistent diplopia (3 cases), intraorbital hematomas (2 cases), epiphora (2 cases), lower eyelid eversion or retraction (2 cases), and skin scars (2 cases). The primary cause of postoperative infection was chronic inflammation in the paranasal sinuses or closed cavities within the fracture area. Postoperative complications in orbital fractures were associated with various factors, including the timing of surgery, surgical approach, repair materials, surgical skills, and auxiliary techniques. CONCLUSION: Standardizing surgical techniques and implementing precise auxiliary technologies may reduce the incidence of complications and enhance the operation's success rate.

2.
International Eye Science ; (12): 62-66, 2024.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-1003507

ABSTRACT

The finite element method(FEM)is a widely employed mathematical technique in mechanical research that divides an object into discrete and interacting finite elements. Medically, finite element analysis(FEA)enables the simulation of biomechanical experiments that are challenging to conduct. Orbital surgery poses significant challenges to ophthalmologists due to its inherent difficulty and steep learning curve. FEM enables the simulation and analysis of the mechanical properties of orbital tissue, offering a novel approach for diagnosing and treating orbital-related diseases. With technological advancements, FEM has significantly matured in the diagnosis and treatment of orbital diseases, becoming a popular area of research in orbital biomechanics. This paper reviewed the latest advancements in orbital FEM, encompassing the development of orbital FEA models, simulation of orbital structure, and its application in orbital-related diseases. Additionally, the limitations of FEM and future research directions are also discussed. As a digital tool for auxiliary diagnosis and treatment, orbital FEA will progressively unlock its potential for diagnosing and treating orbital diseases alongside technological advancements.

3.
Heliyon ; 9(12): e22803, 2023 Dec.
Article in English | MEDLINE | ID: mdl-38090007

ABSTRACT

Objective: This study aims to explore the impact of nano-hydroxyapatite (na-HA) and micron-hydroxyapatite (mi-HA) on human umbilical vein endothelial cells (HUVEC) using in vitro experiments, assessing their influence on cellular biological activity. These findings offer crucial experimental data for informing the development of more vascularized tissue-engineered bone constructs. Methods: We employed the Cell Counting Kit-8 (CCK-8) assay to assess the impact of various concentrations of both HA extracts on HUVEC metabolic activity post 48, 72, and 96 h of treatment. Transwell experiments were conducted to evaluate the influence of HA extract on HUVEC migratory capabilities. The cell proliferation activity was assessed using the 5-ethynyl-2'-deoxyuridine (EdU) incorporation assay, elucidating the impact of varying concentrations of both HA extracts on cell proliferation. Lumen formation experiments were conducted to assess the capacity of HA-treated HUVECs to form lumen-like structures. The Enzyme-Linked Immunosorbent Assay (ELISA) was employed to measure the impact of HA extract on vascular endothelial growth factor (VEGF) secretion by HUVECs. Western blotting (WB) was utilized to analyze alterations in the expression levels of PI3K/Akt signaling pathway-related proteins following HA extract treatment of cells. Results: At extract concentrations of 100 g/L and 12.5 g/L, both the mi-HA and na-HA groups demonstrated suppression of cell metabolic activity, migration, and proliferation. Conversely, at 25 g/L, increased cell metabolic activity and proliferative activity were observed. Lumen formation experiments demonstrated that both HA extracts at 100 g/L concentration facilitated lumen formation, with the na-HA group at 25 g/L concentration displaying a more pronounced impact on lumen formation. The ELISA results indicated a notable reduction in VEGF secretion within the mi-HA group at a concentration of 100 g/L. WB experiments revealed that within the na-HA group, treatment of HUVECs with 25 g/L and 12.5 g/L extract concentrations led to upregulation of PI3K and Akt protein expression, while at 100 g/L concentration, Akt protein expression decreased. In the mi-HA group, intracellular expression of both PI3K and Akt proteins exhibited reduction. Conclusion: Hydroxyapatite extract at both high and low concentrations impacts the biological activity of vascular endothelial cells, with the potential mechanism of action involving the PI3K/Akt signaling pathway.

4.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-990807

ABSTRACT

Objective:To systematically analyze the efficacy of nasal endoscopic transsphenoidal decompression and glucocorticoid pulse therapy for traumatic optic neuropathy (TON).Methods:PubMed, Web of Science, Cochrane Library, ClinicalTrial.gov, CNKI, Wanfang, China Biomedical and other databases were searched to retrieve clinical studies on endoscopic surgery and hormone therapy for TON since their establishment to November 1, 2020.Two researchers screened the literature and evaluated the quality of the included literatures.The improvement of visual acuity before and after treatment was taken as an effective indicator.RevMan 5.3 statistical software was used for meta-analysis.The sensitivity of the results was analyzed atfer literature exclusion.The publication bias of each study was double checked by funnel plot and Begg test.Results:Eight studies were included, including 7 cohort studies and 1 randomized controlled trial.There was no significant difference between the endoscopic decompression group and glucocorticoid group in the efficiency of visual acuity improvement in the treatment of TON [odds ratio ( OR)=1.65, 95% confidence interval ( CI)∶0.75-3.66, P=0.22], neither in TON patients with residual vision before surgery ( OR=2.17, 95% CI: 0.94-4.98, P=0.07). For nasal endoscopic decompression surgery, early surgery (disease course<7 days) was more effective than late surgery (disease course>7 days) ( OR=4.73, 95% CI: 2.55-8.78, P<0.01). Sensitivity analysis suggested that the results of this literature analysis were not robust.The Begg test showed that there was no literature publication bias. Conclusions:There is no significant difference between nasal endoscopic surgery and glucocorticoid therapy in the treatment of TON.Early endoscopic surgery may help improve visual acuity in patients with residual vision.

5.
Med Sci Monit ; 27: e932344, 2021 Mar 25.
Article in English | MEDLINE | ID: mdl-33762557

ABSTRACT

An editorial decision has been made to retract this manuscript due to breach of publishing guidelines, following the identification of non-original and manipulated figures. Reference: Tan Guiying, Li Yue, Xiong Chao, Yu Jinhai, Xu Qihua: Antitumor Effects of 8-Deoxylactucin in RB355 Human Retinoblastoma Cells Are Mediated via Apoptosis Induction, Reactive Oxygen Species Production, and Cell Cycle Arrest.  Med Sci Monit 2019; 25:4575-4582. 10.12659/MSM.914242.

6.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-865387

ABSTRACT

Orbital tumors not only damage the appearance of patients, but also damage the visual function, even endanger the life of patients.Orbital tumors can be divided into epidermal ectoderm, neuroectoderm, mesoderm, lymphopoietic system and metastatic tumors according to their origin.Due to the complex structure of orbital tissue, abundant nerve vessels and close connection with visual organs, it is more difficult and risky to treat orbital tumors than other regional tumors.Classic treatments for tumors include surgical resection, chemotherapy, and radiotherapy.Surgery is the main treatment for most orbital tumors.Due to the improvement of technology and equipment, it has been developed in the direction of minimally invasive surgery.For advanced tumors or lymphoid hematopoietic system tumors with extensive invasion, chemotherapy is the main treatment.Due to the improvement of drug delivery methods and protocols, it is developing towards high efficiency and less side effects.Radiotherapy is mostly used for refractory tumors that are difficult to be completely removed by surgery and easy to relapse.Due to the continuous improvement of radiotherapy technology, safe and accurate treatment has been achieved.In addition to the classical treatment methods, targeted treatment of carcinogenic sites at the molecular level has become a hot topic in the treatment of orbital tumors.This paper reviews the current development of orbital tumors in surgical resection, chemotherapy, radiotherapy and targeted therapy.

7.
Med Sci Monit ; 25: 4575-4582, 2019 06 20.
Article in English | MEDLINE | ID: mdl-31219101

ABSTRACT

BACKGROUND Retinoblastoma is a rare malignancy arising from the immature cells of the retina, generally in children up to the age of 3 years. Here, we assessed the anticancer effects of a natural sesquiterpene lactone - 8-deoxylactucin - on the growth of the retinoblastoma RB355 and normal RPE cells. MATERIAL AND METHODS Cell viability was assessed by 3-(4,5-dimethylthiazol-2-Yl)-2,5-diphenyltetrazolium bromide (MTT) assay, and apoptosis was assessed by DAPI staining and annexin V/propidium iodide (PI) assay. Reactive oxygen species (ROS) levels were determined by fluorescence microscopy. Flow cytometry was used to determine the cell cycle distribution. Protein expression was determined by Western blot analysis. RESULTS The results showed that 8-deoxylactucin exerted selective and potent anticancer effects on the RB355 cells and exhibited an IC50 of 25 µM. Nonetheless, the cytotoxic effects of 8-deoxylactucin on the normal RPF cells were comparatively lower, as evident from the IC50 of 65 µM. 8-Deoxylactucin increased the production of ROS and triggering apoptosis of RB355 cells. The induction of 8-deoxylactucin-induced apoptosis was also accompanied with increased cleavage of caspase 3, upregulation of Bax, and downregulation of Bcl-2. The 8-deoxylactucin-induced cell cycle arrest of RB355 cells was also associated with inhibition of cyclin A and B1 expression, as well as the inhibition of Cdc2 phosphorylation. CONCLUSIONS 8-Deoxylactucin inhibits the growth of RB355 cells by apoptosis, cell cycle arrest, and increased production of ROS.


Subject(s)
Antineoplastic Agents/pharmacology , Reactive Oxygen Species/metabolism , Retinoblastoma/drug therapy , Sesquiterpenes/pharmacology , Apoptosis/drug effects , Cell Cycle/drug effects , Cell Cycle Checkpoints/drug effects , Cell Line, Tumor , Cell Proliferation/drug effects , Cell Survival/drug effects , Humans , Retinoblastoma/metabolism , Retinoblastoma/pathology , Signal Transduction/drug effects
8.
Chinese Pharmacological Bulletin ; (12): 581-588, 2017.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-511277

ABSTRACT

Aim To investigate the effect of Ajuga decumbens(HBG), Poria cocos(FL) and their combination on the metastasis of invasive breast cancer cells and the related mechanisms.Methods We conducted several assays including cell adhesion assay, scratch assay and transwell invasion assay.Western blot analysis was employed to detect the expression of associated proteins of EMT and MAPK signaling pathway.Results FL,HBG and their combination could significantly inhibit the adhesion, migration and invasion of MDA-MB-231 and SK-BR-3 cells.HBG and FL had markedly synergistic effect, and the best compatibility ratio was 10 ∶1.HBG, FL and their combination could reverse EMT of breast cancer cells, which increased the levels of epithelial biomarkers, such as β-catenin, E-cadherin and ZO-1, and reduced the levels of mesenchymal biomarkers, such as vimentin.Moreover, treatment of the cells with HBG, FL and their combination resulted in marked inhibition of phosphorylation of ERK1/2, JNK and p38.Conclusions The combination of HBG and FL have the ability to inhibit breast cancer cell invasion by targeting the expression of MAPK pathway as well as suppressing the epithelial-to-mesenchymal transition.

9.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-664195

ABSTRACT

Objective To investigate the relationship between serum Dickkopf-1 ,HE4 and PARP-1 levels and clinical staging of gastric cancer and lymph node metastasis and its clinical prognosis .Methods The serum levels of DKK-1 ,HE4 and PARP-1 in 50 patients with gastric cancer (gastric cancer group) and 50 healthy volunteers (control group) were measured by enzyme-linked im-munosorbent assay (ELISA) ,the relationship between serum Dickkopf-1 ,HE4 and PARP-1 levels and clinical staging of gastric cancer ,lymph node metastasis was analyzed .and the clinical prognosis was explored .Results Serum DKK-1 ,HE4 ,PARP-1 levels of gastric cancer group were (29 .6 ± 9 .6) ,(52 .6 ± 18 .6) ,(6 .1 ± 1 .8)μg/L respectively ,and the levels of control group were (5 .8 ± 1 .5) ,(17 .5 ± 2 .6) ,(3 .6 ± 1 .8)μg/L respectively .Serum DKK-1 ,HE4 and PARP-1 levels of gastric cancer group were signifi-cantly higher than those of control group ,DKK-1 ,HE4 ,PARP-1 levels were higher in gastric cancer patients with older age ,lower degree of differentiation ,in late clinical stage ,and with lymph node metastasis ;serum DKK-1 ,HE4 ,PARP-1 levels had no obvious relationship with gender and age but were positively related to TNM stage ,and lymph node metastasis ;DKK-1 (P=0 .04) ,HE4 (P=0 .03) and PARP-1 (P=0 .04) are independent risk factors of poor prognosis of patients with gastric cancer .Conclusion The levels of serum Dickkopf-1 ,HE and PARP-1 in patients with gastric cancer are closely related to the clinical prognosis of the pa-tients and are independent risk factors of poor prognosis .

10.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-288725

ABSTRACT

<p><b>OBJECTIVE</b>To study the mercury accumulation in injured skin rats induced by Badu Shengji San (BDSJS), a traditional Chinese medicine preparation for external use.</p><p><b>METHOD</b>Injured skin rats were treated with BDSJS for consecutively 4 weeks. During the 4 weeks and the following 4 weeks after the drug withdrawal, samples were collected for determining mercury contents in blood, urine and kidney, with urinary N-acetyl-beta-D-glucosaminidase(NAG) and beta2-microglobulin (beta2-MG) as indicators of renal toxicity and serum biochemical indicators of hepatic and renal functions. Additionally, activated partial thromboplastin time (APTT), prothrombin time (PT) and kidney and renal pathological changes were also observed.</p><p><b>RESULT</b>Compared to injured skin rats, mercury contents of blood, urine and kidney were increased significantly in low, middle and high-dose BDSJS groups administered for consecutive 4 weeks. The levels of mercury showed decreases in urine (89%, 78%, 93%) and kidney (55%, 51%, 57%), and blood mercury concentration recovered to the normal range in low, middle and high-dose BDSJS groups after the drug withdrawal for 4 weeks. Kidney coefficient and beta2-MG were remarkably increased and renal tubular epithelial cell swelling could be found in the high-dose group, and kidney coefficient, beta2-MG and renal morphology basically recovered to the normal levels after the drug withdrawal for 4 weeks.</p><p><b>CONCLUSION</b>The administration of BDSJS for consecutively 4 weeks can cause mercury accumulation in blood and mainly in kidney. Once the accumulated mercury concentration of kidney reaches a certain level, renal tubular epithelial cells would be injured. 1.1 mg x cm(-2) of BDSJS is proved to be safe and 2.2 mg x cm(-2) can cause mild but reversible injury in the function of kidney which can be recovered after drug withdrawal for 4 weeks.</p>


Subject(s)
Animals , Female , Male , Rats , Acetylglucosaminidase , Urine , Drugs, Chinese Herbal , Chemistry , Toxicity , Epithelial Cells , Metabolism , Pathology , Kidney Tubules , Metabolism , Pathology , Mercury , Blood , Metabolism , Toxicity , Urine , Rats, Sprague-Dawley , Skin , Wounds and Injuries , Time Factors , beta 2-Microglobulin , Urine
11.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-288724

ABSTRACT

<p><b>OBJECTIVE</b>To compare the sensitivity of early renal injury induced by mercury-containing medicine in rats, including urinary N-acetyl-beta-D-glucosdminidase (NAG), beta2-microglobulin (beta2-MG), retinol binding protein (RBP) and clusterin (CLU).</p><p><b>METHOD</b>Badu Shengji San(BDSJS), a mercury-containing preparation of traditional Chinese medicine, was adopted as the mercury contact drug. The lowest effective toxic dose was used to observe its effect on serum creatinine (SCr), blood urea nitrogen (BUN), and such early renal injury indicators as NAG, RBP, beta2-MG and CLU and compare the sensitivity of tested indicators.</p><p><b>RESULT</b>Compared to the broken skin group, groups with administration of 60 and 120 mg x kg(-1) doses of BDSJS showed no obvious difference in SCr and BUN when kidney indicators is remarkably increased and obvious pathological changes were found in kidney tubules but with significant increase in the urinary level of CLU and the levels of NAG and RBP. H&E staining of renal tubule showed that exposure of 30 mg x kg(-1) BDSJS had no significant morphological changes, but at the same concentrations, the level of RBP was markedly increased. Urinary beta2-MG levels were markedly decreased in BDSJS 30, 60 mg x kg(-1) group rats, whereas 120 mg x kg(-1) dose group showed no obvious change in urinary beta2-MG levels.</p><p><b>CONCLUSION</b>Urinary RBP, NAG and CLU were more sensitive than SCr and BUN as indicators for early renal injury in the order of RBP > NAG > CLU, and urinary RBP, NAG would increase earlier than beta2-MG.</p>


Subject(s)
Animals , Male , Rats , Acetylglucosaminidase , Urine , Blood Urea Nitrogen , Clusterin , Urine , Creatinine , Blood , Drugs, Chinese Herbal , Chemistry , Toxicity , Epithelial Cells , Metabolism , Pathology , Kidney Tubules , Metabolism , Pathology , Mercury , Blood , Metabolism , Toxicity , Urine , Random Allocation , Rats, Sprague-Dawley , Retinol-Binding Proteins , Urine , Skin , Wounds and Injuries , Time Factors , beta 2-Microglobulin , Urine
12.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-288723

ABSTRACT

<p><b>OBJECTIVE</b>To compare the effects of Badu Shengji San (BDSJS) on rats with different injured skins.</p><p><b>METHOD</b>The injured and ulcerous skin rat model was established to observe the renal injury induced by BDSJS, a mercury-containing external preparation of Chinese medicine, with urinary N-acetyl-beta-D-glucosaminidase (NAG) and retinol binding protein (RBP) as indicators of renal toxicity.</p><p><b>RESULT</b>Compared to injured skin rats with the same dose, both of high and low-dose ulcerous skin groups showed obvious increase in urinary RBP and kidney coefficients, significant pathomorphological changes in renal tubules and notable epithelial cytopathic effects. In terms of NAG, the high-dose ulcerous skin group saw no significant increase, but the low-dose group recorded sharp rise.</p><p><b>CONCLUSION</b>The renal toxicity induced by BDSJS in ulcerous skin rats was more toxic than that in injured skin ones.</p>


Subject(s)
Animals , Male , Rats , Acetylglucosaminidase , Urine , Disease Models, Animal , Drugs, Chinese Herbal , Pharmacology , Therapeutic Uses , Toxicity , Epithelial Cells , Metabolism , Pathology , Kidney Tubules , Metabolism , Pathology , Mercury , Toxicity , Urine , Random Allocation , Rats, Sprague-Dawley , Retinol-Binding Proteins , Urine , Skin , Wounds and Injuries , Skin Ulcer , Drug Therapy , Microbiology , Staphylococcal Skin Infections , Drug Therapy
13.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-288717

ABSTRACT

<p><b>OBJECTIVE</b>To study the effect of repeated administration of Zhuhong ointment on renal antioxidant capability of ulcerous skin in rats, in order to further discuss the mechanism of mercury contained in Zhuhong ointment on the antioxidant capability of kidney in skin ulcer rats.</p><p><b>METHOD</b>Eighty SD rats were randomly divided into eight groups: Zhuhong ointment A, B, C, D, E (1.219, 0.609, 0.305, 0.152, 0.76 g x kg(-1)) groups, the vaseline group, the ulcer model group and the impairment control group. The levels of NAG and RBP of toxicity for early kidney tubular injury and T-AOC, SOD, GSH-PX and GSH in kidney were determined after consecutive administration for 14 days.</p><p><b>RESULT</b>Compared with ulcer model group, the levels of RBP in groups A, B, C and D increased, while the levels of NAG increased only in the group A. The level of T-AOC increased in groups A, B and C. The level of T-SOD increased in the group E, while it dropped down greatly in the group A. The level of GSH-PX increased in groups A, B and C. The content of GSH increased in every dose groups.</p><p><b>CONCLUSION</b>Antioxidant capacity in rats can be increased in a reasonable dose of Zhuhong ointment, but some antioxidant activity can be notably inhibited by with the increase of dose.</p>


Subject(s)
Animals , Male , Rats , Acetylglucosaminidase , Urine , Antioxidants , Metabolism , Disease Models, Animal , Dose-Response Relationship, Drug , Drugs, Chinese Herbal , Pharmacology , Toxicity , Glutathione , Metabolism , Glutathione Peroxidase , Metabolism , Kidney Tubules , Wounds and Injuries , Metabolism , Mercury , Metabolism , Ointments , Random Allocation , Rats, Sprague-Dawley , Retinol-Binding Proteins , Urine , Skin Ulcer , Metabolism , Microbiology , Specific Pathogen-Free Organisms , Staphylococcal Skin Infections , Metabolism , Superoxide Dismutase , Metabolism , Time Factors
14.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-288716

ABSTRACT

<p><b>OBJECTIVE</b>To study the effects of Zhuhong ointment on accumulation in the body of mercury and the pathological morphology changes of kidney, via the measurement of related indicators of the skin-impaired model rat.</p><p><b>METHOD</b>Eighty-eight SD rats were randomly divided into the impairment control group, and high-, middle-, low-dose Zhuhong ointment groups. Each group was treated by corresponding methods for 4 weeks, and recovering for 4 weeks. Urinary potein (PRO), pH, Beta N-acetyl aminoglycosidase enzymes (NAG) and beta2-microglobulin (beta2-MG) contents in urine were taken as monitoring indexes, blood urea nitrogen (BUN) and serum creatinine (SCr) in blood and the levels of mercury in urine, blood and kidney were tested, and the pathological morphology changes of kidney were observed.</p><p><b>RESULT</b>After treatment for 4 weeks, compared with impairment control group, the levels of mercury in urine, blood and kidney in every dose group increased significantly (P < 0.01). And the relation exists between toxicity and dose on Zhuhong ointment. After recovery for 4 weeks, the levels of mercury in urine and blood in every dose group restore normal, while the level of mercury in kidney in high- dose group still increased (P < 0.01). The level of NAG increased only in high-dose group. There was no significant difference in NAG contents between Zhuhong ointment groups and the impairment control group (P < 0.05).</p><p><b>CONCLUSION</b>Excess using Zhuhong ointment repeatedly may lead to accumulation of mercury and pathological morphology changes of kidney. So the levels of mercury in the body and related indicators of renal functions should be tested in clinical when long-term using Zhuhong ointment.</p>


Subject(s)
Animals , Female , Male , Rats , Acetylglucosaminidase , Urine , Blood Urea Nitrogen , Creatinine , Blood , Disease Models, Animal , Drugs, Chinese Herbal , Pharmacology , Toxicity , Hydrogen-Ion Concentration , Kidney , Metabolism , Pathology , Mercury , Blood , Metabolism , Urine , Ointments , Random Allocation , Rats, Sprague-Dawley , Retinol-Binding Proteins , Urine , Skin , Wounds and Injuries , Time Factors , beta 2-Microglobulin , Urine
15.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-252974

ABSTRACT

<p><b>OBJECTIVE</b>To provide evidences for evaluating the role of chlorogenic acid (CA) on the adverse reaction of traditional Chinese medicine injection and promoting clinical rational usage of CA, the effect of CA and chlorogenic acid-HSA(CA-HSA) on the degranulation in mast cell RBL-2H3 were compared and the allergenic effect and its mechanism were investigated.</p><p><b>METHOD</b>The unsensitized and sensitized RBL-2H3 cells were used. The releasing rate of histamine and beta-hexosaminidase was detected by colormetric assays. The degranulating rate was detected by neutral red staining and Annexin V positive cell rate was detected by flow cytometry.</p><p><b>RESULT</b>CA and CA-HSA could not induce degranulation in unsensitized RBL-2H3 cells. CA and CA-HSA could significantly increase the release of histamine and beta-hexosaminidase, degranulating rate and Annexin V positive cell rate.</p><p><b>CONCLUSION</b>CA has strong allergenicity after combination with serum proteins. As an active ingredient of Shuanghuanglian injection, CA is a kind of possible allergen which caused hypersensitivity reactions induced by Shuanghuanglian injection.</p>


Subject(s)
Animals , Rats , Cell Degranulation , Cell Line , Chlorogenic Acid , Dose-Response Relationship, Drug , Drugs, Chinese Herbal , Histamine Release , Mast Cells , Cell Biology , Bodily Secretions , beta-N-Acetylhexosaminidases , Bodily Secretions
16.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-251204

ABSTRACT

<p><b>OBJECTIVE</b>To investigate the anticancer and anti-metastatic effect of Ajuga decumbens extraction (HBG) on breast cancer and to clarify the effect of HBG on MMPs and TIMPs.</p><p><b>METHOD</b>The antitumor and antimetastic effect of HBG was determined using orthotopic 4T1 breast cancer mouse model. Western blot analysis was employed to detect the expression of associated proteins in breast cancer metastasis.</p><p><b>RESULT</b>Administration with 50-200 mg x kg(-1) doses of HBG significantly reduced the tumor weight, tumor volume and numbers of lung tumor nodules in a dose-dependent manner. Tumor metastasis correlated proteins were altered following HBG treatment, MMP-2 and MMP-9 were down-regulated while TIMP-1 and TIMP-2 were up-regulated.</p><p><b>CONCLUSION</b>HBG showed anticancer and antimetastatic effect towards breast cancer through regulating the expression of MMPs and TIMPs. These data sustain our contention that HBG might be used as a potential therapeutic agent.</p>


Subject(s)
Animals , Female , Mice , Ajuga , Mammary Neoplasms, Experimental , Chemistry , Drug Therapy , Pathology , Matrix Metalloproteinase 2 , Matrix Metalloproteinase 9 , Metalloproteases , Mice, Inbred BALB C , Neoplasm Invasiveness , Neoplasm Metastasis , Phytotherapy , Plant Extracts , Therapeutic Uses , Tissue Inhibitor of Metalloproteinase-1 , Tissue Inhibitor of Metalloproteinase-2 , Tissue Inhibitor of Metalloproteinases
17.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-404740

ABSTRACT

BACKGROUND: It is very important to evaluate vascularization of postoperative hydroxyapatite (HA) orbital implants in human eyes. Recently, methods for evaluating vascularization of HA orbital implants are limited; however, ultrasonic contrast is a novel technique to high-precisely measure blood flow.OBJECTIVE: To investigate the feasibility of ultrasonic contrast to evaluate the vascularization of HA orbital implants, and to compare with enhanced MRI.DESIGN, TIME AND SETTING: The comparative observation was performed at Departments of Ophthalmology and Ultrasound,Jiangyin People's Hospital between January 2008 and January 2009.PARTICIPANTS: Ten patients including 8 males and 2 females were treated with eye ball extirpation and HA orbital implants. The patients were aged 24-61 years, with the mean age of (45.0±10.2) years. HA orbital implants were crossly coated using anterior part of pedicle scleral flap.METHODS: PHILIPS IU22 color Doppler ultrasound was used in this study, and SonoVue (59 mg) was the major contrast medium. Sulphur hexafluoride was dissolved in saline to make suspension. A 2.4-mL suspension was injected through peripheral vein of elbow. Enhanced MRI was additionally used in this study: Siemens Magnetom Avanto 1.5T, standard head coil, horizontal axis, 2.0-3.0 mm thickness, no interval, FOV 160 mmxi80 mm, 256x256 matrix, and SE sequence T1WI (TR 500 ms, TE 12 ms).Dimeglumine gadopentetate injection was used as a contrast medium.MAIN OUTCOME MEASURES: Vascularization characteristics and degrees between ultrasonic contrast and enhanced MRI at different time points after implantation.RESULTS: Ultrasonic contrast showed a well dynamic contrast-enhanced image of the anterior part of HA in early stage of post-operation, and showed distributing instance and density of blood vessel. Later stage of post-operation (about 3-6 months),contrast-enhanced image was unconspicuous. The enhanced MRI showed a clear vascularization of HA orbital implants at the stage of post-operation.CONCLUSION: Ultrasonic contrast is a effective investigative way to evaluate vascularization of HA orbital implants in early stage of implantation, and it is limited at the later stage of post-operation than enhanced MRI.

SELECTION OF CITATIONS
SEARCH DETAIL
...