Objective To introduce a new method for correcting square face deformity.Methods This operation consists of malar reduction (MR)and mandibular angle osteotomy (MAO),which could be done simutaneously or at different time.Results A total of 21 patients with square face deformity accepted MR and MAO in which 12 cases were done simutaneously and 9 cases at different time.After this procedure, the width of the mid face and the lower face reduced by 15.3?3.2mm and 14.2?2.5mm, respectively. A11 the cases achieved satisfactory results without complications.Conclusion This method can effectively correct square face deformity by reducing the width and protrusion of the mid face and the width of the lower face.

Objective To explore clinical effect of double-tube continuous negative pressure drainage in the treatment of Morel-Lavallée leision.Methods We retrospectively analyzed the clinical data of 13 patients with Morel-Lavallée leision,which were diagnosed and treated in our hospital from May 2009 to July 2010.They were 11 women and 2 men,aged from 19 to 57 years (average,32.5 years).All patients underwent operations within 3 days after injury,except for 2 patients whose diagnosis was postponed.The operation was performed with small incision and double-tubes were placed for continuous negative pressure drainage.Double-tubes were not removed until effusion was less than 30 ml/24 hours.The heal was defined as no skin necrosis and subcutaneous hydrops at lesion site,no skin floating and sliding at palpation.Results Double-tubes were removed 4 to 12 days postoperatively (average,6.3 day).All of 13 patients were followed up for an average of 13.7 months (range,10 to 18 months).Skin necrosis occurred in 1 patient.Lesions were healed 4 to 10 weeks postoperatively(average,7.2 weeks).No deep infection or delayed hematogenous infection was found.There were no general systematic complications.Superficial infection at wound site occurred in one patient and healed after wound management.Conclusion Application of double-tube continuous negative pressure drainage is a safe,less invasive,low-cost and effective treatment for Morel-Lavallée leision.

Objective To evaluate the role of mitochondrial ATP-sensitive potassium (mitoKATP) channel in mitigation of cerebral ischemia-reperfusion (I/R) injury by isoflurane preconditioning in rats and the relationship with c-Jun N-terminal kinase (JNK) signaling pathway.Methods Thirty-two male Sprague-Dawley rats,weighing 280-320 g,were randomly divided into 4 groups (n =8 each) using a random number table:sham operation group (group S),group I/R,isoflurane preconditioning group (group Ⅰ-pre),and 5-hydroxydecanoate (5-HD,a selective mitoKATP channel antagonist) group.Cerebral I/R was produced by modified 4-vessel technique described by Pulsinelli in anesthetized rats.In group Ⅰ-pre,the rats were exposed to 1.5％ isoflurane for 1 h everyday for 5 consecutive days before ischemia.In group 5-HD,5-HD 15 mg/kg was injected intraperitoneally at 30 min before ischemia and the other procedures were similar to those previously described in group Ⅰ-pre.Neurological behavior was evaluated at 24 h of reperfusion.The rats in each group were sacrificed at 72 h of reperfusion,and the brains were removed for determination of neuronal apoptosis (by TUNEL) and expression of caspase-3 and phosphor-JNK (p-JNK) protein (using Western blot) in hippocampal tissues.Apoptotic rate was calculated.Results Compared with group S,the number of grid cross was significantly decreased,hanging time was shortened,apoptotic rate was increased,and caspase-3 expression was up-regulated in I/R,Ⅰ-pre and 5-HD groups,the expression of p-JNK protein was up-regulated in IR and 5-HD groups,and no significant change was found in the expression of p-JNK protein in group Ⅰ-pre.Compare with group I/R,the number of grid cross was significantly increased,hanging time was prolonged,apoptotic rate was decreased,and the expression of caspase-3 and p-JNK protein was downregulated in group Ⅰ-pre,and no significant change was found in the parameters mentioned above in group 5-HD.Compared with group Ⅰ-pre,the number of grid cross was significantly decreased,hanging time was shortened,apoptotic rate was increased,and the expression of caspase-3 and p-JNK protein was up-regulated in group 5-HD.Conclusion The mitoKATP channel is involved in mitigation of cerebral I/R injury by isoflurane preconditioning through blocking the JNK signaling pathway in rats.

Objective To evaluate the effect of isoflurane preconditioning on the expression of hippocampal GluR1 subunits-containing α-amino-3-hydroxy-5-methyl-4-isoxazolepropionate(AMPA)receptors in a rat model of focal cerebral ischemia-reperfusion(I/R).Methods Forty-eight pathogen-free healthy male Sprague-Dawley rats,weighing 250-280 g,aged 7-8 weeks,were divided into 3 groups(n=16 each)using a random number table:sham operation group(group S),focal cerebral I/R group(group I/R)and isoflurane preconditioning group(group IPC).Focal cerebral I/R was induced by occlusion of the middle cerebral artery for 2 h followed by reperfusion to induce cognitive decline in I/R and IPC groups. Rats were exposed to 1.5% isoflurane for 1 h every day for 5 consecutive days,and the model was established at 24 h after the last exposure in group IPC. Eight rats in each group were selected to perform Morris water maze test for 6 consecutive days starting from 9 or 23 days after operation. The rats were sacrificed at 14 and 28 days after operation,and the hippocampal tissues were obtained for determination of the expression of GluR1 mRNA(by using real-time polymerase chain reaction)and GluR1 protein(by Western blot).Results Compared with group S,the escape latency was significantly prolonged at each time point after operation,the frequency of crossing the original platform quadrant and percentage of swimming distance at the original platform quadrant were decreased at 14 and 28 days after operation,and the expression of GluR1 protein and mRNA was down-regulated at 14 days after operation in I/R and IPC groups(P<0.05).Compared with group I/R,the escape latency was significantly shortened at 10-13 days after operation,the percentage of swimming distance at the original platform quadrant and frequency of crossing the original platform quadrant were increased at 14 days after the operation,and the expression of GluR1 protein and mRNA was up-regulated at 14 days after operation in group IPC(P<0.05).Conclusion The mechanism by which isoflurane preconditioninig improves the cognitive function is related to up-regulation of the expression of hippocampal GluR1 subunits-containing AMPA receptors in a rat model of focal cerebral I/R.

Objective To evaluate the effect of isoflurane preconditioning on autophagy during focal cerebral ischemia-reperfusion (I/R) injury in rats.Methods Thirty-six healthy male Sprague-Dawley rats,weighing 250-280 g,aged 7-8 weeks,were divided into 3 groups (n =12 each) using a random number table:sham operation group (group S),cerebral I/R group (group I/R) and isoflurane preconditioning group (group IP).Focal cerebral I/R was induced by 2 h middle cerebral artery occlusion followed by 24 reperfusion.Group IP inhaled 1.5％ isoflurane for 1 h per day for 5 consecutive days,the other two groups only inhaled 30％ oxygen,and focal cerebral I/R was induced at 24 h after the last inhalation.At 24 h of reperfusion,neurologic deficit was assessed and scored,the rats were then sacrificed,and brains were removed for determination of cerebral infarct size (using triphenyl tetrazolium chloride staining) and expression of microtubule-associated protein 1 light chain 3-Ⅱ (LC3-Ⅱ) and Beclin-1 (by Western blot).Results Compared with group S,the neurologic deficit scores and cerebral infarct size were significantly increased,and the expression of hippocampal LC3-Ⅱ and Beclin-1 was significantly up-regulated in I/R and IP groups (P＜0.05).Compared with group I/R,the neurologic deficit scores and cerebral infarct size were significantly decreased,and the expression of hippocampal LC3-Ⅱ and Beclin-1 was significantly upregulated in group IP (P ＜ 0.05).Conclusion The mechanism by which isoflurane preconditioning ameliorates focal cerebral I/R injury is related to enhancement of autophagy in the rats.

Aims Toevaluatethepharmacodynamic efficacy of different types of antiangiogenic agents as HM-3 on a non-small cell lung cancer xenografts tumor model .To explore the interaction between the antian-giogenic agents and the tumor microenvironment,and to offer suggestions for clinical therapy.Methods Thenon-smallcelllungcarcinomaxenograftmodelwas established in Balb/c nude mice.The model mice were treated with Docetaxel(10 mg·kg-1 )as the positive control.The mice were parallelly treated with,HM-3 at the doses of 3 mg · kg-1 and 48 mg · kg-1 and, Avastin(5 mg·kg-1 ).The parameters include tumor volume,tumor weight and immunohistochemical analy-sis.Result Animalexperimentsshowedthatdocetaxel had good anti-tumor activity.Tumor growth inhibition by tumor weight of G2 docetaxel(10 mg·kg-1 )group was 60. 80%.Tumor growth inhibition by tumor weight of G3 HM-3(3 mg·kg-1 )group,G4 HM-3(48 mg· kg-1 )group ,G4 Avastin(5 mg·kg-1 )group,were 43. 60%,-34. 80%,44. 40%,respectively.Con-clusion Theantigiogeniceffectisaffectedbytumor growth stage,tumor microenvironment and their work-ing mechanisms.Angiogenesis inhibitors HM-3 has a certain effect of inhibiting tumor growth,but to little a-vail.HM-3 shows on inhibitory effect in a dose-de-pendent manner at the doses of 0~6 mg·kg-1 .HM-3 at a high dose of 48 mg · kg-1 has no inhibitory but promoting effects on human non-small cell lung carci-noma A549 xenografts in nude mice .Special dose-effect relationship indicates that dosage should be paid attention to in the clinical use of blood vessel inhibi-tors.

Objective To evaluate the cardioprotection of electroacupuncture (EA) in the patients undergoing heart surgery with cardiopulmonary bypass (CPB).Methods Forty American Society of Anesthesiologists physical status Ⅲ patients,aged 18-55 yr,of New York Heart Association Ⅱ-Ⅲ,scheduled for elective cardiac valve replacement with CPB,were divided into 2 groups (n =20 each) using a random number table:control group (group C) and group EA.In group EA,bilateral Neiguan,Ximen,Shenmen and Baihui acupoints were stimulated with an electrie stimulator with the frequency of 2 Hz from 20 min before anesthesia induction until the end of operation,and the optimal intensity was selected according to the patient's tolerance when awake.Before EA and at 30 min of CPB,30 min,1 h and 2 h after termination of CPB and 6 and 24 h after operation,blood samples were taken from the central vein for determination of concentrations of heart-type fatty acid binding protein and cardiac troponin Ⅰ in plasma (by enzymelinked immunosorbent assay) and concentrations of malondialdehyde (using hydroxylamine method).Cardiac contractility was scored at 1,6 and 24 h after operation,and arrhythmia was scored at 24 h after operation.Results Compared with group C,the plasma concentrations of malondialdehyde at 30 min and 1 and 2 h after termination of CPB and 6 h after operation,plasma concentrations of cardiac troponin Ⅰ at 24 h after operation,and plasma concentrations of heart-type fatty acid binding protein at 30 min of CPB and 24 h after operation were significantly decreased,and the arrhythmia score and cardiac contractility score at 6 and 24 h after operation were decreased in group EA (P＜0.05).Conclusion EA can inhibit lipid peroxidation and exerts cardioprotection in the patients undergoing heart surgery with CPB.

Objective:To explore the efficacy and safety of in-class transition from proteasome inhibitor bortezomib to ixazomib in the treatment of newly-treated patients with multiple myeloma (MM).Methods:The clinical data of 63 newly-treated MM patients in Shenzhen Second People's Hospital from January 2018 to December 2020 were retrospectively analyzed. They were divided into transition group (23 cases) and bortezomib group (40 cases). Both groups were treated with bortezomib-containing regimen as the first-line treatment regimen. In case of intolerable adverse reactions, patients in the transition group were treated with ixazomib instead of bortezomib, while the patients in the bortezomib group did not undergo drug transition. The curative effect and progression-free survival (PFS) were compared between the two groups.Results:In the transition group, the overall response rate (ORR) before in-class transition was 95.7% (22/23), the rate of ≥ very good partial remission (VGPR) was 52.2% (12/23); the ORR after transition was 95.7% (22/23), and the rate of ≥ VGPR was 82.6% (19/23). In the bortezomib group, ORR was 90.0% (36/40), and the rate of ≥ VGPR was 72.5% (29/40). There was no significant difference in ORR and the rate of ≥VGPR between the two groups ( χ2 = 0.64, P=0.424; χ2 = 0.82, P = 0.364). The median number of cycles of PI therapy in the transition group was 9, and the median PFS time was not reached. The median number of cycles of PI therapy in the bortezomib group was 7.5, and the median PFS time was 30.0 months (95% CI 19.1-40.9 months), there was no significant difference in PFS between the two groups ( P = 0.275). In the bortezomib group, 12 patients discontinued bortezomib due to adverse reactions, the median PFS time was 20.0 months (95% CI 12.6-27.4 months), and the PFS of patients who discontinued PI in the transition group and the bortezomib group was compared, the difference was statistically significant ( P = 0.043). In the transition group, 21 patients (21/23, 91.3%) developed peripheral neuropathy, and the incidence of ≥grade 3 adverse reactions was 13.0% (3/23); in the bortezomib group, 22 patients (22/40, 55.0%) developed peripheral neuropathy, and the incidence of ≥grade 3 adverse reactions was 12.5% (5/40). Conclusions:For newly-treated MM patients, the transition from bortezomib to ixazomib can improve the depth of remission and reduce the recurrence caused by the discontinuation of PI.

As an important protein structure on the surface of bacteria, type Ⅳ pili (TFP) is the sensing and moving organ of bacteria. It plays a variety of roles in bacterial physiology, cell adhesion, host cell invasion, DNA uptake, protein secretion, biofilm formation, cell movement and electron transmission. With the rapid development of research methods, technical equipment and pili visualization tools, increasing number of studies have revealed various functions of pili in cellular activities, which greatly facilitated the microbial single cell research. This review focuses on the pili visualization method and its application in the functional research of TFP, providing ideas for the research and application of TFP in biology, medicine and ecology.
Fimbriae, Bacterial/metabolism* ; Bacterial Proteins/genetics* ; Bacterial Physiological Phenomena ; Bacterial Adhesion/physiology*

Dirofilaria immitis (heartworm) infections affect domestic dogs, cats, and various wild mammals with increasing incidence in temperate and tropical areas. More sensitive antibody detection methodologies are required to diagnose asymptomatic dirofilariasis with low worm burdens. Applying current transcriptomic technologies would be useful to discover potential diagnostic markers for D. immitis infection. A filarial homologue of the mammalian translationally controlled tumor protein (TCTP) was initially identified by screening the assembled transcriptome of D. immitis (DiTCTP). A BLAST analysis suggested that the DiTCTP gene shared the highest similarity with TCTP from Loa loa at protein level (97%). A histidine-tagged recombinant DiTCTP protein (rDiTCTP) of 40 kDa expressed in Escherichia coli BL21 (DE3) showed immunoreactivity with serum from a dog experimentally infected with heartworms. Localization studies illustrated the ubiquitous presence of rDiTCTP protein in the lateral hypodermal chords, dorsal hypodermal chord, muscle, intestine, and uterus in female adult worms. Further studies on D. immitis-derived TCTP are warranted to assess whether this filarial protein could be used for a diagnostic purpose.
Animal Structures/chemistry ; Animals ; Antibodies, Helminth/blood ; Antigens, Helminth/chemistry/*genetics/immunology/*isolation & purification ; Cloning, Molecular ; Dirofilaria immitis/chemistry/*genetics/immunology ; Disease Models, Animal ; Dogs ; Escherichia coli/genetics ; Gene Expression ; Molecular Sequence Data ; Molecular Weight ; Recombinant Fusion Proteins/chemistry/genetics/immunology/isolation & purification ; Sequence Analysis, DNA ; Tumor Markers, Biological/chemistry/*genetics/immunology/*isolation & purification