1.Comparison of HRP-labeled Neurons in Living and Dead Mice with Light and Electron Microscopy
Journal of Third Military Medical University 1983;0(04):-
Crystal HRP was applied to the cut ends of the left infraorbital nerve and branches of the facial nerve of 34 adult mice. Then the animals were killed and perfused, and HRP solution was applied to the cut ends of the root of the right facial nerve and the right maxillary nerve. Frozen sections of the brain stem and the trigerminal ganglia were made and reacted with BDHC, TMB or DAB method for light and electrom microscopic examination.Under light microscopy, the neurons labeled when alive in the left trigerminal ganglion and the nucleus of the left facial nerve showed that more cell bodise but less nerve fibers were labeled. The reaction products with all the 3 methods in thess cells were granular. The neurons labeled after death in the right trigerminal ganglion and the nucleus of the right facial nerve showed that more fibers but less cell bodies were labeled. The reaction products in these cells were also granular with BDHC and TMB methods but diffuse with DAB method.Under electron microscopy, there were electron-dense positive products in all the cells labeled either when alive or after death. In those cells labeled when alive, the products were found in the round or oval secondary lysosomes or multive-sicular bodies, while in those labeled after death, they were mostly found on one side of vacuoles without membrane boundary. In the fibers labeled after death, many large or small positive granules were found in the axons and many minute positive granules in the myelin lamellae especially on their inner surface in contact with the axons.
2.Laparoscopy in Treatment of Post-laparoscopic Cholecystectomy Complications:Report of 21 Cases
Chinese Journal of Minimally Invasive Surgery 2005;0(07):-
Objective To investigate the value of laparoscopic treatment for post-laparoscopic cholecystectomy complications.Methods From October 1996 to October 2007,totally 754 patients suffering from gallbladder diseases underwent laparoscopic cholecystectomy in our hospital;21 of them developed postoperative complications and received laparoscopic intra-abdominal exploration.Results By laparoscopy,bile leakage was diagnosed in 11 cases,intra-abdominal bleeding in 6,intraperitoneal fluid in 2,duodenal bulb perforation in 1,and obstructive jaundice in 1.The patients who developed obstructive jaundice was converted to open surgery because of hepatic duct transection.The other 20 cases underwent laparoscopic treatment.All the patients were followed up for a mean of 6 years(1 to 11),during which none of them had biliary complications.Conclusion Laparoscopic treatment is a microinvasive,safe and effective method for post-laparoscopic cholecystectomy complications.
3.Progress in the Studies of Biological Clocks Genes
Progress in Biochemistry and Biophysics 2001;28(2):181-183
Circadian rhythms describe biological phenomena that oscillate with an 24 hour cycle. These rhythms include blood pressure, body temperature, hormone level, the number of immune cells in blood, and the sleep-wake cycle. The aim is to introduce common genes between species that are responsible for determining the circadian behavior, especially some transcription factor s that serve to regulate many circadian rhythm genes. And the common molecular mechanism of biological clocks between fly and human will be in troduced.
4.Observation of metastasis of colon adenocarcinoma Iovo cells in vitro under laser scanning confocal microscope
International Journal of Biomedical Engineering 2009;32(6):341-343
Objective To explore the feasibility of applying laser scanning confocal microscopy to investigate the metastatic characteristic of tumor cells in vitro. Methods The confocal microscope combined with transwell assay was employed to observe the invasion and migration of the metastatic colon cancer ]ovo cells when stimulated by IL-8. Results The results show that the number of invasive lovo cells in the stimulated group was much higher than the unstimulated group (P<0.05). The migration way of lovo cells observed under the confocal microscopy was ameba like movement. These findings suggest that the metastatic ability of lovo cells stimulated by IL-8 was enhanced. Conclusion The metastatic characteristic of colon adenocarcinoma lovo cells is similar to the chemotactic movement of leukocytes.
5.Raloxifene combined with calcium phosphate cement for repair of rabbit mandibular defects
Chinese Journal of Tissue Engineering Research 2014;(25):3993-3997
BACKGROUND:Raloxifene is the third generation of selective estrogen receptor modulators, which can decrease bone loss, increase bone mineral content, and reduce fracture risk. OBJECTIVE: To study the effects of raloxifene combined with self-setting calcium phosphate cement on the repair of rabbit mandibular defects. METHODS:Totaly 36 New Zealand white rabbits were selected to prepare 8 mm×4 mm×3 mm mandibular defect models, and then randomized equaly into experimental group (raloxifene, 7.5 mg/kg per day, combined with self-setting calcium phosphate cement), drug group (raloxifene, 7.5 mg/kg per day), artificial bone group (self-setting calcium phosphate cement). Rabbits were sacrificed 4, 8 and 12 weeks later, respectively, for measurement of bone morphogenetic protein 2 using immunohistochemistry method and transforming growth factor β using a laser scanning confocal microscope. RESULTS AND CONCLUSION:After 4 and 8 weeks, the expression of bone morphogenetic protein 2 was obviously higher in the experimental group than the drug and artificial bone groups; after 12 weeks, bone remodeling was basicaly complete in the experimental group, and the expression of bone morphogenetic protein 2 became lower than that in the other two groups. The expression of transforming growth factor β in the experimental group was gradualy increased and reached the peak at 8 weeks, while in the drug and artificial bone groups, the expression of transforming growth factor β exhibited an increasing trend within 4-12 weeks, which was close to the peak. These findings suggest that raloxifene can promote early expression of bone morphogenetic proteins and early calus formation as wel as accelerate the repair of bone defects with calcium phosphate cement.
6.Clinical analysis of nonpuerperal mastitis: diagnosis and treatment study of 82 cases
International Journal of Surgery 2014;41(3):177-180
Objective To explore and summarize the clinical features and treatmentof the nonpuerperal mastitis.Methods Eighty-two cases of nonpuer-peral mastitis from 2003 to 2013 were analyzed retrospectively.All patients were divided into surgery alone group (11 cases)and medication combined surgery group (71 cases),which PDM patients with triple anti-mycobacterial drugs therapy,GM patients with cortical hormone therapy.Results All patients were diagnosed by biopsy.The total duration of simple drug group (triple or hormone) is (11.92 ±6.50) weeks and remission rate after 4 weeks was (89.06 ± 2.25) %.Drugs plus surgery group,the total duration of the group is (6.57 ± 2.30) weeks,and no recurrence.The total duration of the simple surgery group is (17.09 ± 13.11) weeks and remission rate after 4 weeks was (63.64 ± 1.10) %.Comparison of the total duration of the three groups and the cumulative response rate curves were significantly different(P < 0.05).Conclusions Nonpuerperal mastitis requires a combination of clinical and pathological diagnosis.Surgery is not the only treatment option,triple anti-mycobacterial or cortisol hormones for different types of pathology conservative treatment can achieve a satisfactory therapeutic effect.Drug therapy combined with surgery can shorten the duration and reduce the relapse rate,it is an effective treatment for nonpuerperal mastitis.