Objective To investigate the clinical efficacy of RevoLix 2 μm continuous wave laser treatment on bladder neck contracture after benign prostatic hyperplasia operation. Methods A total of 21 cases were enrolled in current research and they all accepted 2 μm continuous wave laser treatment of bladder neck contracture after benign prostatic hyperplasia operation in the 252th Hospital of the Chinese People's Liberation Army. The clinical efficacy was recorded. Results The operation of the 2 μm continuous wave laser vaporesections were successfully performed on 21 cases. The maximum urine flow rate was increased from(6. 86 ± 1. 97)ml/ s to(16. 31 ± 1. 61)ml/ s,and the difference was significant(t = 15. 49,P < 0. 01). After 3 to 23 months(median 14 months)follow-up,20 cases were cured and 1 case was combined with bladder residual urine 110 ml. Conclusion The therapy of 2 μm continuous wave laser is a superior micro-invasive surgery method for patients with Bladder neck contracture,which shows little blood loss,high level safety,convenient operation and infrequent complications.

Objective To investigate the impact of midazolam on neuronal injury induced by oxygen glucose depri-vation/reoxygenation(OGD/R)in mice.Methods An injury model of neuronal cell line HT22 was established by OGD/R induction.HT22 cells were divided into OGD/R group,low-dose group,medium-dose group and high-dose group,midazolam+KG-501(CREB inhibitor)group and control group.ELISA was applied to detect TNF-α and IL-6 levels;Commercialy available reagent kits were applied to detect superoxide dismutase(SOD),catalase(CAT),and malondialdehyde(MDA)levels;MTT and Edu experiments were applied to detect cell prolifera-tion;flow cytometry was applied to detect cell apoptosis rate;RT-qPCR method was applied to detect the ex-pression levels of CREB mRNA and PGC-1α mRNA;Western blot was applied to detect the expression levels of Ki-67,Bcl-2,Bax,CREB,and PGC-1α proteins.Results Compared with the control group,the A490 value(24,48 hours),proliferation rate,SOD and CAT activity,CREB mRNA and PGC-1α mRNA expres-sion,Ki-67,Bcl-2,CREB,and PGC-1α protein level in the OGD/R group were all significantly reduced(P＜0.05);The apoptosis rate,TNF-α,IL-6,MDA,and Bax protein expression were significanty increased(P＜0.05).Compared with the OGD/R group,the A490 values(24,48 hours),proliferation rate,SOD,CAT activity,CREB mRNA and PGC-1α mRNA expression,and Ki-67,Bcl-2,CREB,and PGC-1α protein expression were significantly increased in low,medium,and high dose midazolam groups;The apoptosis rate,TNF-α,IL-6,MDA,and Bax protein expression were obviously reduced(P＜0.05).Compared with the high-dose midazolam group,A490 value(24,48 hours),proliferation rate,activity of SOD and CAT,CREB mRNA and PGC-1α mRNA expression as well as Ki-67,Bcl-2,CREB,and PGC-1α protein expression were all sig-nificantlu reduced in the high-dose midazolam+KG-501 group while the apoptosis rate,TNF-α,IL-6,MDA,and Bax protein expression were obviously increased(P＜0.05).Conclusions Midazolam might alleviate nerve cell injury potentially through the mechaninsms of promoting OGD/R-induced proliferation and reducing cell apoptosis in HT22 cells.

Objective: To examine the relationship of clinicopathological features and treatment strategies with the prognosis of patients with initially diagnosed stageⅣbreast cancer bone metastasis (IDBCBM). Methods: Clinical data from 74 patients with IDBCBM who were treated at Tianjin Medical University Cancer Institute and Hospital between March 2007 and November 2016 were analyzed retrospectively. A univariate analysis of prognosis was conducted using a Log-rank test, and the subsequent multivariate analysis was conducted using a Cox regression model. Results: The median age of the patients was 53.3 years. The median total survival duration (overall survival, OS) was 34.3 months, and the 3-and 5-year survival rates were 37.8% and 12.2%, respectively. Patients for whom the first distant metastasis was bone metastasis only had a better prognosis, with a median survival duration of 41.7 months and overall 3-and 5-year survival rates of 54.5% and 20.4%, respectively. In the univariate analysis, molecular subtype, hormonal receptor status, HER-2 expression levels, nodal status, Ki-67 index, number of bone metastases (NBM), initial mode of metastasis, mode of therapy, and locoregional treatment showed an association with prognosis. Further, multivariate analysis demonstrated that Ki-67 index, NBM, mode of therapy, and initial mode of metastasis were independent factors affecting OS (P<0.05). Conclusions: A high Ki-67 index, single mode therapy, the presence of multiple bone metastases, and accompanying visceral metastasis were associated with a poor prognosis. However, it remains unclear whether locoregional treatment, including surgery and radiotherapy treatment of the primary tumor, is beneficial.

OBJECTIVETo test the hypothesis that the CCL2/CCR2 signaling pathway plays an important role in pain induced by experimental tooth movement.

METHODSMale Sprague- Dawley rats weighing between 200 and 300 g were used in this study. Expression of CCL2/CCR2 in the trigeminal ganglion (TG) was determined by Western blotting 0 h, 4 h, 1 d, 3 d, 5 d, 7 d after tooth movement. Localization of the CCL2 was revealed by immunohistochemistry. Changes in body weight, nocifensive behaviors, and the effects of CCL2/CCR2 antagonists on these changes in pain behaviors were evaluated. Exogenous CCL2 was injected into periodontal tissues and added to TG neurons in culture and the resulting c-fos expression and pain responses were detected. In addition, the expression and cellular localization of CCL2 in the medullary dorsal horn (MDH) was determined by immunohistochemistry 3 d and 14 d after tooth movement.

RESULTSExperimental tooth movement led to a statistically significant increase in CCL2/CCR2 expression at the protein level from day 3 to 7 after application of force initiating tooth movement.When compared with control group (1.000 ± 0.000), CCL2 increased to (2.620 ± 0.128), (3.300 ± 0.197) and (1.740 ± 1.290) at day 3, 5 and 7 respectively, which were statistically significant (P < 0.05). CCR2 expression levels were (1.636 ± 0.061) and (1.766 ± 0.126) compared with that in control group (1.000 ± 0.000) at day 3 and 5 respectively with statistical significance (P < 0.05). Both of them peaked on day 5 (3.3 and 1.8 time compared to control group). Application of recombinant CCL2 led to the up-regulation of c-fos expression in vivo and in vitro, and triggered a corresponding nocifensive behavior in rats. The magnitude of the nocifensive behavior could be reduced by a CCR2 antagonist, and by CCL2 neutralizing antibody. Furthermore, we found a significant increase in the expression of CCL2, corresponding well to the up-regulation of the time spent on nocifensive behaviors after ETM. In addition, CCL2 was up-regulated in TG neurons and astrocytes in Vc.

CONCLUSIONSThe CCL2/CCR2 axis was modulated by experimental tooth movement and involved in the development of tooth movement pain, and thus palyed an important role in orthodontic pain mechanism.

Animals ; Chemokine CCL2 ; physiology ; Immunohistochemistry ; Male ; Neurons ; Rats ; Rats, Sprague-Dawley ; Receptors, CCR2 ; physiology ; Signal Transduction ; Tooth Movement Techniques ; adverse effects ; Toothache ; etiology ; Trigeminal Ganglion ; Up-Regulation

Osteoporosis （OP） is a systemic metabolic bone disease. Amid population aging， OP has become a major health problem for the middle-aged and the elderly in China. Aging， iron load， and estrogen deficiency break the balance between oxidation and antioxidant systems， and the increase of reactive oxygen species mediates oxidative stress to damage DNA， lipids， proteins and other macromolecules， thus accelerating cell apoptosis and inducing OP， obesity， and neurodegenerative disorders. It has been found that oxidative stress is of great significance in the pathogenesis of OP. Oxidative stress regulates the signaling pathways， cytokines， and proteins related to the mesenchymal stem cells， osteoblasts， and osteoclasts， thereby weakening the osteogenic differentiation of mesenchymal stem cells， inhibiting osteoblast mineralization， and promoting the activation， proliferation， and maturation of osteoclasts. As a result， the dynamic imbalance between bone resorption and bone formation occurs， influencing bone remodeling and promoting the progression of OP. At the moment， anti-bone resorption drugs， bone formation-promoting drugs， and hormones are mainly used in clinical settings in western medicine. However， due to the long treatment cycle and the occurrence of serious gastrointestinal reactions， hypocalcemia， osteonecrosis， and others， patients show poor compliance and thus the effect is not as expected. Traditional Chinese medicine （TCM） demonstrates remarkable effect on OP attributing to the multi-pathway and multi-target characteristics. With low price and few adverse reactions， TCM is widely applied in clinical practice in comparison with western medicine. TCM has unique advantages in the treatment of OP by regulating oxidative stress. It exerts the therapeutic effect on OP by modulating different signaling pathways， providing new mindset for the treatment of this disease. Therefore， through literature research， this study summarized the research on mechanism of oxidative stress in OP and the treatment by TCM， which is expected to lay a foundation for further research.

Objective: To investgate the effect of Herbst appliance on the growth and remodeling of the temporomandibular joint (TMJ) in class Ⅱ patients with mandibular retrusion by using MRI. Methods: Between December 2010 and October 2014, 12 class Ⅱ patients (11-16 years old) with mandibular retrusion were chosen. The patients were divided into two groups. The control group included 7 patients (14 joints) with normal disc condyle relationship and the anterior disc displacement (ADD) group included 5 patients (10 joints) with anterior disc displacement. The MRI images of TMJ were measured, including condylar height, joint space index and disc position ratio, before and after the treatment. Results: The condylar height of the patients in the control group was significantly increased (P<0.001) after treatment, and no significant difference in joint space index (P=0.821) and disc position ratio (P=0.146) was found. The joint space index of the patients ([-14.70±8.82]% and [4.90±11.35]%) in ADD group changed significantly (P<0.001) after treatment, and no significant difference in condylar height (P=0.294) and disc position ratio (P=0.120) was found. Conclusions The normal disc condyle relationship was beneficial to the reconstruction of the condylar process, and the increase of the condylar height. The condyle moved forward in patients with anterior disc displacement after treatment.

国家自然科学基金项目(11932012、81400536),上海申康医院发展中心临床创新三年行动计划(SHDC2020CR3009A),上海交通大学医工(理)交叉基金(JYJC202130)