Comparison of intestinal microbial community succession based on different universal primer sets / 生物工程学报

The important role of intestinal microorganisms in human health has been widely confirmed. At present, most of the studies on intestinal microorganisms are based on amplification of the V3-V4 region of bacterial 16S rRNA gene, and little attention has been paid to archaea. In this study, a primer set which can amplify 16S rRNA gene of both bacteria and archaea at the same time was used. By comparing the community changes before and after probiotics intake, it showed that this primer set is suitable for analyzing the changes of human intestinal bacteria and archaea communities. The fecal samples of volunteers were collected, and the amplification and high-throughput sequencing were carried out by using bacterial primer set (B primer) and bacterial and archaeal universal primer (AB primer); several commonly used rRNA databases were used to determine the amplification ability of the primer set to bacteria and archaea. The results showed that AB primer could display the bacterial community amplified by B primer, and could obtain the sequence of common methanogenic archaea in intestinal tract. AB primer set can analyze the bacteria and archaea in the intestinal tract at the same time by only one amplification and sequencing, which can show the structure of intestinal microbial community more comprehensively, which is suitable for the research of intestinal microorganisms.

The Clinical application of recontruction of sideburns aesthetic subunit with local flaps / 中华整形外科杂志

Objective@#To explore the clinical application and effect of sideburns aesthetic reconstruction with local flaps.@*Methods@#Between June 2012 and June 2017, there were 12 cases of patients with Benign tumor which is in the sideburn , including 7 Male patients, 5 female patients, thier ages are from 37 to 68 years old.The tumor size ranged from 0.5 cm×1.0 cm to 1.5 cm×2.5 cm, and the defects, size ranged from 1.0 cm× 1.2 cm to 1.5 cm× 3.0 cm. Single leaf flaps, double leaves flaps or local flaps which are on the ipsilateral sideburn or in the hairy area behind the ear are designed for sideburns reconstruction according to the size and shape of the defect, The flaps size ranged from 1.5 cm× 2.5 cm to 1.8 cm× 3.5 cm.@*Results@#All flaps with 12 cases of patients survived completely with no flap blood supply obstacles, and the incision healed well, all patients were followed up for 6-24 months with no recurrence of the tumor , and the incision scars are hidden in the sideburns, And the sideburn showed satisfactory effect of aesthetic reconstruction with good symmetric cosmetic effect.@*Conclusions@#The local flaps have less injury in the surgery area , simple surgical approach, hidden incision scars, reliable blood supply and high survival rate, which do not affect the sideburns symmetry.Aesthetic result can be achieved by local flaps in the reconstruction of defect after resection of benign tumor at sideburn.

Study on influence of patient perceived medical service quality on satisfaction and behavioral intention / 重庆医学

Objective To study the influence of patient perceived medical service quality on the satisfaction and behavioral intention.Methods The AMOS21.0 software was adopted to construct a structural equation model with satisfaction as a medium for conducting the path analysis among the perceived medical service quality,satisfaction and behavioral intention.Results The perceived medical service quality produced the direct impact on behavioral intention(y=0.50) and satisfaction(γ=0.87),the satisfaction produced the direct impact on behavioral intention(γ=0.38);with the satisfaction as a medium,the perceived medical service quality had the indirect impact(0.33) on behavioral intention and the intermediary rate was 39.76％.Conclusion The perceived medical service quality has active influence on the patient satisfaction and behavior intention,and indirectly acts on the behavioral intention with the satisfaction as intermediary agent.

Effects of lappaconitine on pain and inflammatory response of severely burned rats and the mechanism / 中华烧伤杂志

Objective@#To explore the effects of lappaconitine (LA) on pain and inflammatory response of severely burned rats and the mechanism.@*Methods@#Forty SD rats were divided into healthy+ normal saline group, sham injury+ normal saline group, pure burn group, burn+ LA group, and healthy+ LA group according to the random number table (the same dividing method below), with 8 rats in each group. Rats in pure burn and burn+ LA groups were inflicted with about 32% total body surface area deep partial-thickness scald (hereinafter referred to as burn) on the back and right hind. Rats in sham injury+ normal saline group were sham injured. Rats in burn+ LA group were intraperitoneally injected with 1 g/L LA solution in the dosage of 4 mL/kg at 2.0 h before injury and post injury hour (PIH) 0 (immediately), 24.0, 48.0, and 72.0. Rats in healthy+ LA group were intraperitoneally injected with LA solution in the same dose at the same time points as above, and rats in healthy+ normal saline and sham injury+ normal saline groups were intraperitoneally injected with normal saline in the dose of 4 mL/kg at the same time points as above. At 1.5 h before injury and PIH 12.5, 24.5, 36.5, 48.5, and 72.5, the paw withdrawal mechanical threshold (PWMT) of injured rats was detected, and their pain behaviors were observed. The same observation and detection were conducted in rats without injury in the two groups at the same time points as above. Another 32 SD rats were divided into normal saline group, trinitrophenyl (TNP)-ATP group, minocyline group, pyridoxal-phosphate-6-azophenyl-2', 4'-disulfonic acid (PPADS) group, with 8 rats in each group, and all the rats were inflicted with the same burn injury as above. At PIH 48.0, rats in normal saline group were intrathecally injected with 10 μL normal saline; rats in TNP-ATP group were intrathecally injected with 10 μL TNP-ATP in the concentration of 30 nmol/μL; rats in minocyline group were intrathecally injected with 10 μL minocyline in the concentration of 5 g/L; rats in PPADS group were intrathecally injected with 10 μL PPADS in the concentration of 10 nmol/μL. The PWMT of rats was detected at 0.5 h before injection and 0.5 h after. At PIH 72.5, the tissue in the dorsal horn of spinal cord of rats in sham injury+ normal saline, pure burn, and burn+ LA groups was harvested to observe the co-expression of P2X4 receptor and OX42 receptor with immunofluorescent staining and to observe the expression of P2X4 receptor and count the positive cells with immunohistochemical staining. The venous blood was harvested for determination of serum content of tumor necrosis factor-alpha (TNF-α) and interleukin-1 beta (IL-1β) with enzyme-linked immunosorbent assay. The same observation and determination were conducted in rats without injury in the two groups at the same time point as above. Data were processed with one-way analysis of variance, analysis of variance for repeated measurement, SNK test, paired t test, and Bonferroni correction.@*Results@#(1) There were no abnormal activity in rats of healthy+ normal saline, sham injury+ normal saline, healthy+ LA groups at all time points. Until PIH 72.5, rats in pure burn group were in poor mental state; red and swollen manifestation and blister were observed in burn wounds on the back and right hind; imbalance in gait, lick, bite, and scratch were observed occasionally. Fewer behaviors such as lick, bite, and limp were observed in rats in burn+ LA group than in pure burn group, and the red and swollen manifestation in wounds of rats in burn+ LA group dissipated faster than that in pure burn group. (2) At 1.5 h before injury, there were no significant differences in the PWMT values of rats in healthy+ normal saline, sham injury+ normal saline, pure burn, burn+ LA, and healthy+ LA groups (F=0.106, P>0.05). PWMT values of rats in pure burn group were significantly lower than those in the other 4 groups at all post injury time points (with P values below 0.05). PWMT values of rats in burn+ LA group were significantly lower than those in healthy+ normal saline, sham injury+ normal saline, and healthy+ LA groups at all post injury time points (with P values below 0.05). (3) At 0.5 h before injection, PWMT values of rats in normal saline, TNP-ATP, PPADS, and minocyline groups were close, respectively 15.3±0.8, 15.1±1.0, 15.3±0.9, and 15.6±1.1 (F=0.343, P>0.05). At 0.5 h after injection, PWMT values of rats in normal saline group and PPADS group were respectively 15.2±1.2 and 14.8±1.0, which were significantly lower than 20.8±1.4 and 26.3±1.0 in TNP-ATP group and minocyline group respectively (with P values below 0.05). PWMT values of rats in normal saline and PPADS groups were similar before and after injection (with t values respectively 0.073 and -0.772, P values above 0.05), while those of rats in TNP-ATP and minocyline groups were higher after injection than before injection (with t values respectively -10.180 and -20.813, P values below 0.01). (4) At PIH 72.5, co-expression of P2X4 receptor and OX42 receptor was observed in a few microglias of rats in healthy+ normal saline, sham injury+ normal saline, and healthy+ LA groups, while co-expression of P2X4 receptor and OX42 receptor was observed in a large number of microglias of rats in pure burn and burn+ LA groups. At PIH 72.5, more P2X4 receptor positive cells were observed in rats in pure burn group than in the other 4 groups (with P values below 0.05), and more P2X4 receptor positive cells were observed in rats in burn+ LA group than in healthy+ normal saline, sham injury+ normal saline, and healthy+ LA groups (with P values below 0.05). (5) At PIH 72.5, the serum content of TNF-α and IL-1β of rats in pure burn group was significantly higher than that in the other 4 groups (with P values below 0.001). The serum content of TNF-α and IL-1β of rats in burn+ LA group was significantly lower than that in healthy+ normal saline, sham injury+ normal saline, and healthy+ LA groups (with P values below 0.001).@*Conclusions@#LA has significant analgesic effects on severely burned rats, and it can ameliorate the excessive inflammational situation. The mechanism may be related to its inhibition of expression of P2X4 receptor in microglias in the dorsal horn of spinal cord and reduction in the release of inflammatory factors TNF-α and IL-1β.

Advanced gourd-shaped flap with frontal branch of superficial temporal artery for defects after resection of per-auricular tumor / 中华整形外科杂志

Objective@#To investigate the therapeutic effect of advanced gourd-shaped flap with frontal branch of superficial temporal artery for defects after resection of per-auricular tumor.@*Methods@#From June 2012 to September 2016, 9 cases with pre-auricular tumor, including 7 cases of basal cell cancer and 2 cases of squamous cell carcinoma, received extended resection operation. The tumor size ranged from 0.5 cm×1.0 cm to 1.0 cm×2.0 cm.Intraoperative frozen specimen was used to make sure no invasion at margin and defect bottom. Based on the size and location of defects, the advanced gourd-shaped flap with frontal branch of superficial temporal arterywas designed to cover the defect. The wounds at donor sites were closed directly. The flap size ranged from 2.0 cm× 5.0 cm to 3.0 cm× 7.5 cm.@*Results@#The flaps in all the 9 cases survived completely with primary healing and no complication, like facial paralysis or abnormal feeling. The patients were followed up for 6-36 months with inconspicuous scarandno tumor relapse. Satisfactory cosmetic and functional result can be achieved. The flaps had good match in color with the surrounding tissue.@*Conclusions@#The advanced gourd-shaped flap with frontal branch of superficial temporal arteryhas a reliable blood supply and flexible transverse method with satisfactory cosmetic result. It is one of the ideal method for reconstruction of pre-auricular soft tissue defects.

Repair of the preauricular defects by the superficial temporal artery frontal branch flap and the retrograde retroauricular artery flap / 中华整形外科杂志

Objective@#To investigate the feasibility and effectiveness of the superficial temporal artery frontal branch flap combine with the retrograde retroauricular artery flap in repairing the preauricular defects.@*Methods@#The superficial temporal artery frontal branch flap with hair is designed for sideburns reconstruction, and the hairless retrograde retroauricular artery flap for repair the hairless area which is between the tragus and the temples. The donor sites were closed directly.@*Results@#From September 2012 to September 2015, 9 cases were treated. All flaps survived completely. Surgical incisions and wounds at donor sites and recipient sites healed primarily. All cases were followed up for 6-18 months (10 months on average) and cosmetic results were satisfactory without visible scar.@*Conclusions@#The method of the superficial temporal artery frontal branch flap combined with the retrograde retroauricular artery flap for the repair of preauricular a large skin defect is simple with less and inconspicious auxiliary incision. The sidebums and hairless area can be simultaneously reconstructed with satisfactory appearance.

The preoperative design optimization and clinical application of the anterolateral thigh flap / 中华显微外科杂志

Objective To prospectively summary the piercing-out position,direction,length and piercing-in position of perforator,and investigate the feasibility of preoperative design and optimization of the anterolateral thigh flap and its clinical application.Methods All 58 cases of anterolateral thigh flaps were designed and taken from the lateral thigh area from January,2014 to January,2016.Portable Doppler ultrasound was used before an operation to detect the piercing-out position (point P) of perforators.The direction and length (lower subcutaneous segment of perforators) of perforators after leaving piercing-out position were observed during the operation.And the piercing-in positions (point P') on superficial fascia and the dermis were observed.Based on this,we added line B (anterior superior spine-lateral femoral epicondyle) and line C (anterior superior spine-the middle point of superior border of patella) in the lateral and anterior side of original ilium-patella line in the thigh (line A),respectively.Results All perforators found in 58 cases before and during the operations were located on line A or between line A and line B.No perforators were found between line A and line C.Perforators walked toward the anterior medial side after leaving the muscle membrane.The perforator vascular subcutaneous segment (distance between point P and point P') was (2.02±0.23) cm.There was rectus muscle branch in the descending branch of lateral femoral circumflex artery,while no rectus muscle cutaneous branch was seen.20 cases were designed by one-line method,12 cases were designed by two-line method,while 26 cases were designed by three-line method.Conclusion Advanced three-line method is beneficial to detect of the perforators on the anterior thigh lateral region and to reduce the intraoperative injury perforator vessels at the puncture point.Clinical application of the anterior lateral thigh flap is simple and reliable.

The influence of comprehensive psychological intervention on the immune function of patients with nasopharyngeal carcinoma / 中国实用护理杂志

Objective To explore the influence of psychological intervention on the immune function of patients with nasopharyngeal carcinoma. Methods Forty nasopharyngeal carcinoma patients with concomitant radiochemotherapy were divided into intervention group and control group by random digits table method with 20 cases each.Among concomitant radiochemotherapy nasopharyngeal carcinoma patients, intervention group were treated with comprehensive psychological behavior, and control group received only concurrent radiotherapy and chemotherapy. Both groups were investigated by Self-rating Anxiety Scale(SAS)and Self-rating Depression Scale(SDS).Natural killer cells activity were measured by flow cytometry. Results There were no significantly difference in score of SDS and SAS between two confirmed groups(P>0.05).After treatment,the score of SDS and SAS in intervention group were(45.26± 3.83), (42.57 ± 3.75) points, which were significantly lower than those of control group (52.68 ± 3.66), (51.16 ± 3.62) points, the difference was statistically significant(t =6.264, 7.370, P<0.05). Meanwhile, natural killer cell activity between two groups showed no significantly difference (P>0.05). However, the activity of natural killer cells in intervention group was 26.96±9.01,which was higher than that of control group 22.84 ± 7.19, there were statistically significant difference between two groups (t=2.120, P<0.05).There was a positive correlation between the value difference of SDS scores,SAS scores and natural killer cell activity between two groups (r=0.238, P=0.006; r=0.527, P=0.003). Conclusions Comprehensive psychological intervention can significantly not only improve the depression and anxiety of nasopharyngeal carcinoma patients,but also enhance the activity of natural killer cells,which help maintain the leukocyte level of patients.

Repair of skin and soft tissue defects at distal end of finger with serrated flap with digital proper artery and nerve pedicle combined with bilaterally pedicled V-Y advancement flap of the injured finger / 中华烧伤杂志

<p><b>OBJECTIVE</b>To investigate the therapeutic effects of repair of skin and soft tissue defects at distal end of finger with serrated flap with digital proper artery and nerve pedicle combined with bilaterally pedicled V-Y advancement flap of the injured finger.</p><p><b>METHODS</b>Thirteen patients with skin and soft tissue defects at distal end of 13 fingers were hospitalized from September 2013 to January 2015. After debridement, the wound area of finger ranged from 1.2 cm × 0.8 cm to 1.8 cm × 1.5 cm. Serrated flap with digital proper artery and nerve pedicle combined with bilaterally pedicled V-Y advancement flap of the injured finger were used to repair the defect. The flaps were interruptedly sutured. The areas of bilaterally pedicled V-Y advancement flap and serrated flap with digital proper artery and nerve pedicle ranged from 0.52 to 1.11 and 2.60 to 5.23 cm(2,) respectively.</p><p><b>RESULTS</b>All flaps of 13 patients survived completely. The patients were followed up for 6 to 24 months. The color and texture of the flaps were good. After reconstruction, the finger tips were in round in shape. The appearance of the fingers was consistent with that of the normal fingers, and joint motility was normal. No hook-nail deformity or knuckle dysfunction was found. Sensation of the flaps was estimated as S4, and the distance of two-point discrimination ranged from 2 to 3 mm. The recovery of the joint motion function of the fingers was excellent.</p><p><b>CONCLUSIONS</b>Serrated flap with digital proper artery and nerve pedicle, combined with bilaterally pedicled V-Y advancement flap from the injured finger can repair the skin and soft tissue defects at distal end of finger with reliable blood supply and simple operative technic. It also could avoid the formation of deformity subsequent to a linear scar, and a satisfactory appearance with good function could be obtained.</p>

Effect of cordyceps sinensis compound on immunological rejection of human-pig skin grafting / 中国病理生理杂志

AIM:To investigate the effect of compound of cordyceps sinensis(CS) and tripterygium hypoglaucum on survival time of the heterologous human-pig graft skin.METHODS: CS solution were used to hatch the skin graft and CS was used locally.Ciclosporin A(CsA) and normal saline solution(NS) were used in control.Besides,skin HE staining was detected and CD4,CD8,IL-2 and IL-10 were also examined before and after operation.RESULTS: The survival time of the graft skin treated with CS was(21.20?3.19) days,while the control group treated with NS was(10.17?1.94) days(P