BACKGROUND:Recently, the clinical repair methods of irregular wound on fingers primarily include local pedicled flap and free mini-flap of upper extremities or lower extremities.
OBJECTIVE:To discuss the application of free mini-flap derived from upper limb in repairing the wound on fingers.
METHODS:From December 2010 to February 2014, 12 patients with irregular wounds on 12 fingers were selected from Department of Traumatic Orthopaedics and Hand Surgery, First Affiliated Hospital of Guangxi Medical University, China. The size of wounds ranged from 1.5 cm × 2.0 cm to 3.0 cm × 4.5 cm with different degrees of bone or tendon exposure. After the debridement, 12 patients were treated by free mini-flaps of upper limb. The donor sites were directly sutured.
RESULTS AND CONCLUSION:Among the 12 patients, al the wounds at recipient and donor sites were healed at stage I, and the free mini-flags survival completely. Al of patients were fol owed up for 3-6 months (average 4.5 months). Free mini-flags had good appearance and needn’t undergo secondary trimming. The active motion of fingers was improved dominantly. According to the criteria of Hand Surgery Association Society of Chinese Medical Association Society for the function evaluation of upper limb, three cases were excellent, eight were good, and only one was bad. The excellent and good rate was 91%. Free mini-flaps of upper limb are an ideal method for repair of wounds on fingers. It has no injury to normal tissue in hands, donor site is very secluded, and the short-term curative effect is good.

Objective To identify whether the branches of cervical nerve roots joined into the accessory nerve trunk or not.Methods In 10 adult cadavers (7 males and 3 females, including 20 laterals of brachial plexus nerves), we observe source of cervical plexus branches to the accessory nerve anatomically.In 10 clinical cases of males with brachial plexus nerve injures, in the supraclavicular approach of brachial plexus exploration, the part of the supraclavicular cutaneous nerve for histological specimen were cut off;in the posterior approach, electrical stimulation of the trunk and branches of cervical plexus were performed to observed istaltrapezius muscle contraction.After accessory nerve transfer, the residual terminal accessory nerve and branch of cervical plexus were taked for histological specimens;and observed and judged of each nerve sample by acetylcholinesterase (AchE) immunohistochemical staining.Results In 10 of 20 lateral cases, cervical plexus communicating branches were derived from the fourth cervical nerve root.The intraoperative electrical stimulation of the accessory nerve trunk, 10 cases of distal trapezius muscle were significantly shrink;electrical stimulation of the cervical plexus branch, 2 cases after stimulation of the mild distal trapezius contraction, the remaining 8 cases without trapezius muscle contraction.10 cases of supraclavicular nerve staining for AchE were negative, 10 cases of accessory nerve terminal branches of AchE staining were mixed,10 cases of branch AchE cervical plexus to the accessory nerve staining were negative.Conclusion The branches of the fourth cervical nerve root constantly joins into the accessory nerve, participating in the trapezius muscle inner vation, the fibers of the branches are sensorial fibers.

OBJECTIVE: To explore the mechanisms for urinary system disorders before and after ketamine withdrawal in rats and to evaluate the recovery degree of the urinary system damage after ketamine withdrawal. METHODS: Fifteen male healthy Sprague-Dawley rats were randomly divided into 3 groups: A control group, an experimental group, and a withdrawal group. The rats in the control group were given normal saline. The rats in the experimental group were given ketamine 30 mg/(kg.day) for 30 days. The rats in the withdrawal group were treated as the experimental group except for drug withdrawal for 2 weeks. In the experimental period, we randomly selected 1 rat of kidney, ureter, and bladder from each group to perform HE staining. The bladder tissues in each group were used to detect mRNA expression by quantitative real-time polymerase chain reaction (qRT-PCR). RESULTS: 1) The behavior of ketamine-injected rats was obviously changed, but the weight of ketamine-induced rats was not changed. 2) As compared with the control group, the experimental and withdrawal groups showed infiltration of mononuclear inflammatory cells in the kidney tissues, the thinner epithelium of bladder and infiltration of submucosal mononuclear inflammatory cells under the optical microscope. 3) As compared with the control group, the expression of H1R mRNA was increased in the experimental group (P<0.05). As compared with the experimental group, H1R mRNA expression was significantly decreased in the withdrawal group (P<0.05). CONCLUSION Ketamine abuse could induce behavior changes in rats. The infiltration of mononuclear inflammatory cells in kidney and bladder, the thinner bladder epithelial layer, and the increased H1R gene mRNA expression in bladder might be an important pathogenesis of KAUD. Ketamine withdrawal may effectively reverse the pathogenic process of KAUD.
Animals ; Epithelium ; physiopathology ; Ketamine ; administration & dosage ; Kidney ; physiopathology ; Male ; RNA, Messenger ; Rats ; Rats, Sprague-Dawley ; Urinary Bladder ; physiopathology ; Urologic Diseases ; physiopathology

Objective:To explore the etiology of male urethral stricture,analyze the therapeutic strategies of urethral stricture,and summarize the complicated cases.Methods:The data of 183 patients with urethral stricture were retrospectively analyzed,including etiology,obstruction site,stricture length,therapeutic strategy,and related complications.Results:The mean age was 49.7 years,the average course was 64.7 months,and the constituent ratio of51 to 65 years old patients was 38.8％ (71/183).The traumatic injury of patients accounted for 52.4％ (96/183),in which the pelvic fracture accounted for 35.5％ (65/183) and the straddle injury accounted for 16.9％ (31/183).There were 54 cases of iatrogenic injury (29.5％).The posterior urethral stricture accounted for 45.9％ (84/183),followed by the anterior urethral stricture (44.8％,82/183) and the stenosis (6.6％,12/183).A total of 99 patients (54.1％) received the end to end anastomosis,and 40 (21.9％) were treated with intracavitary surgery,such as endoscopic holmium laser,cold knife incision,endoscopic electroknife scar removal,balloon dilation,and urethral dilation.In the patients over 65-years old,the urethral stricture rate was 14.8％ and the complication rate (70.4％) for transurethral resection of the prostate (TURP) was significantly higher than that of all samples (P＜ 0.01).Conclusion:Both the etiology of male urethral stricture and the treatment strategy have changed and the incidence of traumatic and iatrogenic urethral stricture has increased in recent 3 years.The main treatment of urethral stricture has been transformed from endoscopic surgery into urethroplasty.

Objective:To investigate the regulatory mechanism of long-chain non-coding RNA (lncRNA) MEG3 on the sensitivity of lung cancer cell line H1299 to irradiation.Methods:The expression of MEG3 and miR-21-5p in lung cancer cell line H1299 was detected by qRT-PCR. Overexpression control group (transfected with pcDNA3.1), MEG3 overexpression group (transfected with pcDNA3.1-MEG3), miR-NC inhibition group (transfected anti-miR-NC), miR-21-5p inhibition group (transfected with anti-miR-21-5p), MEG3 overexpression+ miR-NC overexpression group (co-transfected with pcDNA3.1-MEG3 and miR-NC), MEG3 overexpression+ miR-21-5p overexpression group (co-transfected with pcDNA3.1-MEG3 and miR-21-5p mimics) were all transfected into H1299 cells by liposome method treated with 4 Gy irradiation. Cell survival fraction was detected by colony formation assay. Cell apoptosis was detected by flow cytometry. The binding of MEG3 to miR-21-5p in cells was assessed by dual luciferase reporter assay.Results:Compared with normal lung epithelial cells, the expression of MEG3 was significantly decreased, whereas the expression of miR-21-5p was significantly increased in the radioresistant lung cancer cells H1299. Overexpression of MEG3 or inhibition of miR-21-5p could promote the apoptosis and enhance the radiosensitivity of H1299 cells. MEG3 could targetedly regulate the expression of miR-21-5p. Overexpression of miR-21-5p could reverse the enhanced radiosensitivity of MEG3 to H1299 cells.Conclusion:LncRNA MEG3 can enhance the sensitivity of lung cancer cells H1299 to irradiation. The mechanism may be related to targeting miR-21-5p.

Extremity compartment syndrome can cause neuromuscular ischemia and deposition of metabolites in the compartment,leading to irreversible lesions which harm limb functions in the end.It is a great challenge for surgeons to make a timely and accurate diagnosis of the syndrome in adults and children.The key is evaluation of the clinical symptoms and intracompartmental pressure.In this paper we summarize the epidemiology,etiology,pathophysiology,and current diagnosis and treatment of acute extremity compartment syndrome of the upper and lower extremities in adults and children.

Objective:To explore the efficacy of neurolysis or nerve grafting in the treatment of the conducting neuroma of Narakas II obstetric brachial plexus palsy (OBPP), and provide the reference basis for choosing an optimal method.Methods:From January, 2009 to December, 2014, 32 patients undergoing surgical treatment due to Narakas II OBPP were included in this study. Neurolysis was performed in 15 patients, and the procedure of nerve grafting was performed in 17 patients. The general information included gender, age, birth weight, injury cause, etc. were recorded and compared to each other between 2 groups. A followed-up study had been conducting after surgery, the functional rating systems of Gilbert and Raimondi were used for quantitative comparison between preoperative function and postoperative function of shoulder joint, elbow joint and hand. In addition, the differences of the measurement data were compared with the single factor analysis of variance and paired t-test by using SPSS 22.0 statistical software. When P<0.05, it was considered statistically significant. Results:There was no statistically significant difference in the baseline information between 2 groups ( P>0.05). The average time of follow-up was 58.44 (48-96) months. And the fourth year' average score of shoulder joint, elbow joint, hand of the neurolysis group improved from preoperative (1.07±0.85) , (2.07±0.77) and (3.47±0.62) score to (3.00±0.73), (4.13±0.62) and (4.53±0.72) score ( P<0.05), and the nerve grafting group rose from an average of (0.76±0.73), (1.71±0.46) and (3.71±0.67) score to (3.24±0.55), (4.29±0.46) and (4.65±0.48) score ( P<0.05). But the different score between 2 groups was no statistically significant ( P>0.05), respectively. In addition, the proportion of the patients who needed the secondary operation about functional reconstruction in the neurolysis group and the nerve grafting group was 73.33% and 35.29% respectively, besides the proportion of the shoulder joint and elbow joint in the surgical sites accounted for 82.35%, 17.65% respectively. Conclusion:Nerve grafting is a better choice for the treatment of conducting neuroma of Narakas II OBPP at present.

Objective:To explore the diagnosis and treatment of the multi-segment injury of brachial plexus and provide reference for diagnosis and treatment in clinical practice.Methods:From October, 2012 to January, 2015, 24 patients (21 males and 3 females, aged 7-46, average at 25.06±13.01 years) who suffered multi segments injury of brachial plexus were treated by surgical operations. Time from injury to surgery was 7 days to 7 months, with (2.43±2.15) months in average. The general data, injuries and surgical procedures of the patients were recorded. Muscle strength grading was used to evaluate and analyse the curative effect.Results:Twenty-four cases were followed-up for 3.1-7.2 years, with 4.3 years in average. Of the patients, 58.3% of the injuries were caused by mechanical traction. Combined injuries were counted for 83.3%, of which 62.5% combined with ipsilateral limb fractures, 20.8% (5/24) involved in the root of brachial plexus, 79.2% (19/24) with upper part of the clavicle, 91.6% (22/24) with lower part of the clavicle, 16.7% (4/24) with branches of the brachial plexus and 91.7% (22/24) with injuries of 2 segments, 8.3% (2/24) with injuries of 3 segments. At the last followed-up, 55.0% of the patients achieved better than M 3 in total muscle strength. The excellent and good rate was 70.8% in neurolysis group and 42.9% in multiple segment injury group. Conclusion:The mechanism of multi segments injury of brachial plexus is special, and the actual injury is difficult to be located. For patients with multi segments injury, surgical operation should be carried out as early as possible, and the correct surgical procedure can only be determined after the exploration of all sections of the brachial plexus.

Urethra stricture is one of the most common diseases of the urinary system. Accurate imaging diagnosis is key to the selection of surgical approach. At present, X-ray urethral imaging can show the form of urethra cavity, but not the tissues around the urethra. Sonourethrography (SUG) can dynamically identify the urethral cavity and the surrounding tissues without radiation exposure. Multi-layer spiral CT urethrography (CTU) has advantages of no need to adjust the position, quick scanning and reconstruction of the three-dimensional image, which can accurately show the location, length and degree of urethral stricture, and the spatial relationship with the surrounding tissues. Magnetic resonance urethrography (MRU) can provide useful information of the urethral stricture and soft tissues around the urethra, especially in urethral strictures caused by pelvic fractures and complex urethral stenosis. The choice of imaging method should be based on the etiology, anatomy, types of urethral injury and the general situation of patients. Appropriate imaging method can improve the diagnostic accuracy.

To investigate effects of verapamil on primary cultured human urethral scar fibroblasts (USFs) and to provide basis for protecting the formation of urethra scar.
 Methods: The cell proliferation was evaluated with the cell counting kit (CCK)-8 method after USFs were incubated various verapamil concentrations (50, 100, 150, 200, or 250 μmol/L) or solvent for 12, 24, or 48 h. The protein level of matrix metalloproteinase (MMP) was evaluated with ELISA after cells were incubated with verapamil (100 μmol/L) or solvent (control cells) for 24 h.
 Results: The proliferation of USFs was obviously suppressed after verapamil treatment, which was in a dose-dependent and time-dependent manner. Meanwhile, the protein levels of MMP-2 and MMP-9 in the verapamil treatment group increased obviously compared with those of the control groups (P<0.05).
 Conclusion: Calcium channel blockers may prevent the excessive formation of urethra scar by inhibiting the proliferation of urethral scar fibroblasts and enhancing the activity of MMP.
Calcium Channel Blockers ; pharmacology ; Cell Proliferation ; drug effects ; Cells, Cultured ; Cicatrix ; prevention & control ; Fibroblasts ; drug effects ; Humans ; Matrix Metalloproteinase 2 ; drug effects ; Matrix Metalloproteinase 9 ; drug effects ; Matrix Metalloproteinase Inhibitors ; pharmacology ; Up-Regulation ; drug effects ; Urethra ; cytology ; pathology ; Verapamil ; pharmacology