This paper has reported the effect of preservation myceh'al fungus by the methods of slant and rubber plug. The mycelial fungus preserved include 29 genera, 69 species, 128 strains. The preservation time is from 2 years to 17 years. By slant inoculation, their survival conditions are still good keep their original charaters. The result shows that it is simple and effective preserving some mycelial fungus by the methods of slant and rubber plug.

Objective:To search for a method for radical resection of pancreatic and duodenal malignancy involving the mesentery root and for the long post-operation survival of patients.Methods:From Jan.2004 to Aug.2006,a total of 26(16 male and 10 female. aged 27-70)patients with pancreatic and duodenal malignancy involving the mesentery root were treated in our department.The patients included 3 with duodenal malignancy and 23 with pancreatic malignancy.Curative resection was performed by the extended pancreaticoduodenetomy(Whipple procedure)combined with mesentery root resection(MRR)for all patients.The outcomes,safety and the post-operation survival rate were analyzed retrospectively.Results:Thirteen patients were treated with Whipple procedures combined with MRR,9 were treated with partial portal vein/superior mesenteric vein(PV/SMV)and reconstruction of the vessel,and 4 patients received pre-shunt between PV and SMV with artificial vessel graft before the extended Whipple and MRR procedures.The operation time was 2.5 to 7(4.4?1.1)hour,and blood loss was 300 to 5 000(1892?1414)ml with the blood transfusion of 0 to 5 600(2 100?1 586)ml.There was no death in our group and 7(27%)had post-operation complication.The post-operation hospital stay was 10 to 30 days.The pathologic examination showed negative surgical margins for all specimens.The tumor size was 4 to 10 (6.17?2.03)cm.After a follow-up of 9 to 38 months,the pain was relieved in all patients.One of the 3 patients with duodenal adenocarcinoma had liver metastasis at 10 months after operation,and the other 2 survived 10 months and 27 months without evidence of tumor reccurence.The patient with pancreatic micro-adenocarcinoma died of local reccurence 9 months after operation.The patient with neuroendocrine carcinoma died of organ failure 24 months after operation.The patient with lymphoma have survived for 24 months after operation.The 1-year and 2-year accumulated survival rates in the 20 cases with pancreatic ductal cancer were 86.6% and 45.6%. respectively.Conclusion:The extended Whipple procedure with MRR is safe and effective.It can obtain R0 resection in patients with malignant tumors(over 5 cm in diameter)in the head,neck and uncinate process of the pancreas and duodenal.

Objective To summarize the experiences in using Bio-Gide and Bio-Oss for guided bone regener- ation in dental implantation.Methods In 28 cases of bone deficiency,Bio-Gide membranes were applied to cover alveolar defects filled with the Bio-Oss bone powder.In postoperative periodic follow-.up,the bone regeneration effect was observed by successive clinical and X-ray examination.Results 38 implants were inserted in the 28 patients and Bio-Gide membranes were used in the sites of the 38 implants.Alveolar bone defects were filled with new bone in 27 patients,1 implant loosed because of inflammation.37 implants had ideal osseointegration at stageⅡsurgery and were prosthetic rcconstructed successfully.No implant loosed during the observed period of 15 months to 4 years. Conclusion Bio-Gide and Bio-Oss have ideal effect of guided bone regeneration in dental implantation.

AlM:To understand the effect on comprehensive ability of“Teaching-learning transaction” professional education of ophthalmic postgraduates which involving the teachers and students to participate in, and to explore new education model for ophthalmic postgraduate.METHODS:We carried out retrospective investigation questionnaire in the 31 ophthalmic postgraduates of Luzhou Medical College 2010 ~ 2014 grade and the 47 medical staffs of Department of Ophthalmology of the Affiliated Hospital of Luzhou Medical College, to clarify the new professional education model whether could improve the comprehensive ability of ophthalmic postgraduates or not. RESULTS: Carrying out the “ Teaching - learning transaction” professional education could improve the comprehensive ability of ophthalmic postgraduates.CONCLUSlON: Putting teaching and learning together can improve and promote each other, and it is helpful to cultivate comprehensive ability of ophthalmic postgraduates.

AIM: To observe the efficacy of surgical excision combined with autologous limbus conjunctival flap transplantation in the treatment of pterygium accompanied with conjunctival cyst.METHODS: Totally 126 patients 188 eyes with pterygium were hospitalized in Department of Ophthalmology of Tongji Hospital of Huazhong University of Science and Technology during August 2013 and August 2015.The patients were divided into two groups: observation group (11 eyes of 11 patients) with pterygium accompanied with conjunctival cyst and control group (177 eyes of 115 patients) with primary pterygium.All patients underwent slit lamp microscope examination, anterior segment photography, and anterior segment optical coherence tomography(OCT).The size of pterygium was calculated by multiplying neck width and length of the covered corneal.All patients underwent excision combined with autologous conjunctival flap transplantation, and the resections were performed pathological section with hematoxylin and eosin staining.All patients were followed up postoperatively for 4-28mo.RESULTS: All cases in the observation group were confirmed by postoperative pathological examination.All cyst walls were complete, and containing single layer of epithelial cells.The mean size of pterygium of the observation group was 6.9±1.7mm2, and 6.3±1.8mm2 for the control group.There was no significant difference between the two groups (P>0.05).The mean postoperative healing time of observation group was 2.1±0.9d, and 1.9±0.8d for the control group.There was no significant difference between the two groups (P>0.05).Recurrence was seen in two eyes within the follow-up period in the control group, and no recurrence in the observation group.CONCLUSION: Surgical excision combined with autologous limbus conjunctival flap transplantation is a safe and effective treatment for pterygium accompanied with conjunctival cyst.

Objective To probe into the impact on sperm motility in male rat induced by fluorine poisoning, and provide experimental basis to further research for reproductive toxicity of fluoride. Methods According to bodyweight, 32 male Wistar rats were randomly divided into control group, the low-dose, medium-dose and high-dose group( 100,200,300 mg·kg~(-1)·d~(-1) NaF), and were treated by intragastric administration for 90 days, and the weight of the rats was observed each day. After the last intragastric administration, all rats were killed. The relative weight of liver, kidney and testis was calculated. Rat epididymides were plucked off and spermatozoa released from it. Sperm motility parameters were measured by WLJY-9000 color-detection system of sperm quality. Results Compared with high-dose group[(206.00 ± 18.16)g], the weight of low-dose and medium-dose group [ (235.00 ± 14.56), (235.44 ± 24.99)g] in 30 days were statistically significant increased(all P < 0.05) ; there were no significant differences between the groups in 60 days and in 90 days(F = 0.578,1.893, all P > 0.05). Comparison of organ coefficient of liver, kidney and testis among three groups showed no significant difference(F = 2.148,0.907, 1.801, all P > 0.05). The average path velocity(VAP) of the high-dose group[ (25.04 ± 4.59)μm/s] showed significant increase compared with control group[ (20.22 ± 3.29)μm/s] ; the straight line velocity(VSL) of the low- dose, medium-dose and high-dose group[ (18.82± 3.19), (17.84 ± 4.54), (16.46 ± 2.63)μm/s] showed significant increase compared with control group[ ( 12.48 ± 1.73 ) μm/s ] ; linearity (LIN) of the low-dese, medium-dose and high.dose group[(23.84±1.58)%,(24.99±3.37)%,(26.75±5.07)%]showed significant decrease compared with control group[(33.29±4.00)%];wobble(WOB)of the medium-dose and high-dose group[(47.03±3.98)%,(4921±723)%]showed significant increase compared with control group[(38.09±0.48)%];mean angular deviation (MAD)of the low-dose group[(68.29±5.71)radian/s]showed significant decrease compared with control group [(81.57±8.44)radian/s];beat cross frequency(BCF)ofthe high-dose group[(117±0.61)/s]showed significant increase compared with control group[(9.49±0.34)/s];sperm density(p)of the low-dose and medium-dose group [(1.26±0.24)×10~9/L,(1.84±0.50)×10~9/L]showed significant decrease compared with control group [(3.94±1.10)×10~9/L,all P<0.05].Comparison of the eurvilinearvelocity(VCL),straightness(STR),amplitude of lateral head displacement(ALH)among three groups showed no significant difference(F=0.264,2.209,1.667, all P>0.05).Conclusion Fluorine poisoning could change sperm motility parameters of the rat,reduce the sperm density and cau8e damage to the reproductive system.

Objective To investigate the preventive effect of TGF-?_1 neutralizing antibody on flexor tendon adhesion from operation.Methods One hundred and eight leghon cocks performed anastomonsis op- eration were divieded into three groups randomly,as normal saline(control group),5?g/ml group,10?g/ml group of TGF-?_1,antibody.At 1 st,3rd,8th and 12th weeks respectively after operation,the flexor biomechan- ics test,HE staining,Masson staining,Sirius red-polarization staining and TGF-?_1 immunohistochemistry stai- ning were used.Results The max of strength of tendon and the stimulate active flexor from the experiment groups(5?g/ml group,10?g/ml) are higher than from the control group,The max of strength of tendon of the experiment groups are less at 8th weeks,and no difference at 12th weeks from the control group;Compared with the control group,the 10?g/ml group were less shorten the progress of inflammation and accelerated the progress of molding;In the experiment groups(5?g/ml group,10?g/ml),the density of the collagenⅠtype were less,the ratio ofⅠ/Ⅲcollagen and expression of the TGF-?_1 were decreasing.Condusion The study showed that applying of TGF-?_1 muhiclonal neutralizing antibody can inhibit efficiently the function of the TGF-?_1 during the flexor tendon repair,reduce tendon adhesion and scar fromation,however has no affec- tion of tendon intensity,suggesting it is a latent and efficient method for preventiong flexor tendon from adhe- ring after operation.

OBJECTIVETo observe the histological characteristics of constructed basement membrane in tissue-engineered skin.

METHODSForskins from circumcision in normal children were obtained with informed consent of the parents, and then the epidermal keratinocytes (KC) and dermal fibroblasts (Fb) were isolated with trypsin and collagenase D digestion in sequence. Tissue engineered skin with composite chitosan was maintained in a submerged state for 3 days, and then at the air-liquid interface. The tissue-engineered skins were fixed in neutral formalin and then embedded in paraffin after culture for 7, 10 and 15 days, respectively for immunohistological examination of the basement membrane component,including the condition of collagen type IV (COL-IV), collagen type VII (COL-VII), and laminin (LN).

RESULTSHE staining showed that the keratinocytes formed a fine stratified squamous epithelium with the presence of basal, spinous, granular and corneous cell layers, and there was various amount of cells in flat and fusiform shape in each layer. It was found that a regular red staining strip situated at the dermal epidermal junction. Positive staining of collagen IV, collagen VII as well as LN was observed by immunohistological examination.

CONCLUSIONThe results suggest that the composite chitosan tissue engineered skin has a good prospect for clinical use because it presents a perfect reconstruction of basement membrane.

Basement Membrane ; cytology ; Cells, Cultured ; Child ; Chitosan ; metabolism ; Collagen Type IV ; metabolism ; Collagen Type VII ; metabolism ; Humans ; Laminin ; metabolism ; Organ Culture Techniques ; Skin, Artificial ; Tissue Engineering ; methods

AIMTo investigate the interaction between drugs and ordered phospholipid membrane using immobilized artificial membrane chromatography (IAMC).

METHODSIAMC was used to determine the interaction drugs with phospholipid membrane, expressed as membrane affinity (lg kIAM). An n-octanol/buffer system was also employed as the reference hydrophobicity (lg Do/w,7.4).

RESULTSWithin the range of used acetonitrile percentages (phi) 0-30% in mobile phase, retention index (lg kIAM) showed excellent correlation with phi. Intercepts of fitted straight lines between lg kIAM and phi were comparable but slopes were much different for the three organic modifiers (acetonitrile, ethanol and methanol). Effects by adding CH2 substituent on lipophilicity difference (delta lg kIAM and delta lg Do/w,7.4) were similar for p-hydroxyl benzoic methyl ester to butyl ester, whereas different for p-hydroxylbenzoic acid to methyl ester.

CONCLUSIONIAMC system is a convenient, efficient and rapid tool for determining membrane interaction.

Membranes, Artificial ; Octanols ; chemistry ; Pharmaceutical Preparations ; chemistry ; Phospholipids ; chemistry

AIMTo compare lipophilicity measuring scale stemmed from immobilized artificial membrane chromatography and n-octanol/buffer systems.

METHODSA test set consisted of 27 structurally diverse compounds. The lipophilicity of these were evaluated by both immobilized artificial membrane chromatography (IAMC) and n-octanol/buffer systems, which were expressed as lg kIAM and lg DO/W,7.4, respectively.

RESULTSWith regard to each individual group, good correlation coefficient (r2) over 0.81 was obtained (0.82 for acid; 0.88 for neutral, 0.81 for base and 0.92 for ampholyte, respectively). However, a smaller r2 (0.62) was acquired for all compounds studied than that of each individual group.

CONCLUSIONIAMC and n-octanol/buffer systems were shown to be different in lipophilicity.

Buffers ; Chromatography, High Pressure Liquid ; methods ; Hydrophobic and Hydrophilic Interactions ; Lipids ; chemistry ; Membranes, Artificial ; Octanols ; chemistry ; Pharmaceutical Preparations ; chemistry ; Phospholipids ; chemistry