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Objective:To investigate the species types and phylogenetic relationship of canine Leishmania in Diebu County, Gansu Province, so as to provide a basis for exploring new methods of prevention and control of canine visceral leishmaniasis. Methods:DNA was extracted from blood samples of eight asymptomatic Leishmania-infected dogs in Luoda administrative village in Diebu County, Gansu Province. Ribosomal internal transcribed spacer 1 (ITS-1) gene fragments were amplified and isolated by PCR, and then the amplified target fragments were sequenced. The MEGA 7.0 software was used for multiple sequence alignment, and a phylogenetic tree was constructed by neighbor-joining method to analyze the phylogenetic relationship of canine Leishmania in Diebu County, Gansu Province. Results:Fragments of about 320 bp corresponding in size to the target sequence ITS-1 were isolated from all of the eight asymptomatic Leishmania-infected dogs blood samples. ITS-1 sequence alignment showed that the sequence homology between 8 samples and Leishmania infantum MG969403, MN648755 strains was 99.1% - 100.0%; phylogenetic tree showed that all 8 samples were clustered into one branch with Leishmania infantum. Conclusion:Leishmania infantum is identified from all of the eight asymptomatic Leishmania-infected dogs blood samples in Diebu County, Gansu Province.
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Objective:To investigate the Leishmania infection status in dogs in canine-derived visceral leishmaniasis endemic areas in Wenxian County and Diebu County of Gansu Province, to provide basis for formulating effective prevention and treatment measures for visceral leishmaniasis. Methods:In 2019, household survey method was used to collect dog basic information (such as gender and age) in villages with higher incidence of previous cases in Wenxian County and Diebu County of Gansu Province; and venous blood of dog was collected, PCR method was used to detect microloop DNA of Leishmania. Results:A total of 537 dogs were investigated, the positive rate of Leishmania detected by PCR was 41.15% (221/537); the positive rates of PCR detection were 64.63% (95/147) and 32.31% (126/390) in Wenxian County and Diebu County, respectively, and the positive rate in Wenxian County was higher than that in Diebu County (χ 2=46.044, P < 0.05). In 35 dogs with clinical symptoms of visceral leishmaniasis, the positive rate of PCR detection was 74.29% (26/35); the positive rates of PCR detection in symptomatically infected dogs were 84.62% (22/26) and 4/9 in Wenxian County and Diebu County, respectively, the positive rate in Wenxian County was higher than that in Diebu County ( P < 0.05). The positive rate of PCR detection was 38.84% (195/502) in 502 asymptomatic dogs; the positive rates of PCR detection were 60.33% (73/121) and 32.02% (122/381) in Wenxian County and Diebu County, respectively, the positive rate in Wenxian County was higher than that in Diebu County (χ 2=39.982, P < 0.05). Conclusions:The infection rates of Leishmania in dogs are high in Wenxian County and Diebu County of Gansu Province, the positive rate of PCR detection in asymptomatic dogs infected with Leishmania is high. This indicates that local residents and dogs are at high risk of infection with Leishmania. It is recommended that relevant departments should enhance residents' awareness of active protection and strengthen efforts to control the Leishmania infection of dogs.
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Objective:To analyze the spatial distribution characteristics of dogs infected with Leishmania in Wenxian and Diebu counties of Gansu Province, and provide a scientific basis for implementation of precise prevention and control measures. Methods:In 2019, blood samples were collected from all dogs in visceral leishmaniasis endemic areas Xinglong Village, Wenxian County and Luoda Village, Diebu County, Gansu Province, by cluster sampling method. The primer RV1-RV2 which was commonly used to diagnose visceral leishmaniasis, was used for PCR amplification of dog blood samples. SaTScan V9.5 software was used to analyze the spatial clustering of dogs infected with Leishmania. Results:A total of 537 dogs were investigated, and the number of positive infection was 221, with a positive rate of 41.2%. Among them, the positive rates of dogs infected with Leishmania in Wenxian and Diebu counties were 64.6% (95/147) and 32.3% (126/390), respectively. The results of SaTScan analysis showed that the spatial clustering of dogs infected with Leishmania in Wenxian and Diebu counties were not statistically significant ( P > 0.05). Conclusions:There are no spatial clustering of dogs infected with Leishmania in Wenxian and Diebu counties, but the positive rate of dogs infected with Leishmania is higher, and there is a higher risk of epidemic. It is recommended to strengthen health education in local area, strictly drive out lacewings, detect and kill diseased dogs, and reduce the risk of visceral leishmaniasis transmission.
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Objective To investigate the clinical features of multiple primary malignancies ( MPM) in patients with kidney malignancy .Methods The clinical data of 111 patients suffered from MPM associated with kidney malignant tumor in Yantai Yuhuangding Hospital and Affiliated Yantai Hospital of Binzhou Medical College from April 1984 to December 2014 were retrospectively analyzed .Results Among the 111 cases,there were 100 cases with two primary malignancies ,9 with three cancers and 2 cases with four or five cancers.Synchronous MPM were 37 cases,and metachronous 74 cases.The interval between the first and the second primary malignancy was between 0 and 348 months,with average of 46 months and median of 16 months.One hundred and seventy-two cases were treated by operation , and 64 cases by conservative therapy.The proportion of operation from the first to the fifth cancers were 89.2%(99/111),59.5%(66/111),54.5%(6/11),50.0%(1/2),0%(0/1),respectively,with the trend of declining.Finally 95 cases (85.6%) were followed up ,with 53 cases survived and 42 cases died.From the diagnostic date of the first primary cancer,overall survival in 1 year,3 years,5 years,10 years were 97.2%,77.2%,67.8%,48.4%, respectively.Median survival time was 120 months.From the diagnostic date of the last primary cancer , overall survival in 1 year,3 years,5 years were 81.4%,53.4%,48.2%,respectively.Median survival was only 48 months.Univariate analysis showed that the cumulative survival rate was higher in patients with operation than conservative therapy ( P =0.000 ) , in metachronous group than synchronous group ( P =0.009).COX proportional hazard model showed metachronous MPM (OR=3.870,95%CI 1.702-8.801,P=0.001),aggressive operation of the first primary cancer (OR=0.107,95%CI 0.018-0.647,P=0.015) and the second cancer (OR=0.313,95%CI 0.131 -0.750, P=0.009) were independent prognostic factors. Conclusions The main treatment of MPM associated with kidney malignancy is aggressive operation, radiotherapy, chemotherapy and biological therapy are adjuvant .Early detection and early operation for MPM are beneficial for increasing the survival of the patients .
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Objective To evaluate the clnical value of percutaneous nephrolithotomy combined with flexible cystoscope in the treatment of complicated renal calculi.Methods Data of 53 cases of complex renal calculi treated with single channel percutaneous nephrolithotomy combined with flexible cystoscope from July 2011 to September 2013 were analyzed retrospectively.There were 31 males and 22 females.Their age ranged from 26 to 74 years with a mean age of 49 years.Thirty-two cases were located on the left side,19 cases right,2 cases bilateral,21 cases of staghorn calculi and 32 cases of multiple stones.All the stones were filled in 2 or more calyces,with 7 cases in upper ureteral stones at the same time and 2 cases in solitary kidney.The longest diameter of stones was between 2.5 cm to 4.6 cm,with an average of 3.7 cm.There were 39 cases with hydronephrosis and the separation of the collection system was 2.0-5.1 cm with an average of 3.8cm.The period which patients suffered from stones was from 1 month to 6 years.Fourteen cases underwent ESWL and 6 cases underwent open operation before percutaneous nephrolithotomy.All patients underwent single channel percutaneous nephrolithotomy under the guidance of color Doppler ultrasound,and the channel of puncture was expanded to 24 F.Results Fifty-three cases (55 sides) were performed successfully in one-stage sugery and the operation time was between 85 to 170 min,with an average of 119 min.Thestone clearance rate was 89％ (49/55) and postoperative hemoglobin decreased 3.9-9.2 g/L with an average of 6.1 g/L.The hospitalization time was 8 to 12 days with an average of 9.2 days.Two cases had hemorrhage of about 500 ml after surgery and the renal hemorrhage stopped after clamping of renal fistula without blood transfusion.Two patients suffered from fever on surgery day and 1 patient on one day after surgery,and the body temperature returned to normal level after anti-infection treatment for 2 or 3 days.No renal perforation,fluid pneumothorax or damaged surrounding organs occurred.6 patients had residual stones,among which 2 were treated by two-stage operation and 4 were treated with extracorporeal shock wave lithotripsy.Conclusion Percutaneous nephrolithotomy combined with flexible cystoscope has little trauma and high stone clearance rate in the treatment of complex renal calculi with high clinical value.
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BACKGROUND:The transplanted bone marrow stem cells (BMSCs) survive,migrate to the injury site and differentiate into neurons and astrocytes.Transplantation of BMSCs following spinal cord injury (SCI) may improve the recovery of spinal function and may be an effect way for treating spinal cord injury.The treatment of spinal cord injury by autologous BMSCs mobilization and surgical transplantation has a wide prospect of clinic application.However,it is still unclear whether outcomes and mechanisms of them are different.OBJECTIVE:To compare the efficacy of treating SCI in rats by mobilization and surgical transplantation of autologous BMSCs,and assess the two methods by qualitative indexes.DESIGN,TIME AND SETTING:A randomized controlled animal experiment was conducted at the Henan Province People's Hospital from June 2007 to April 2008.MATERIALS:A total of 90 healthy Sprague Dawley rats aged 10 wees old,half male and half female,weighing (240±10) g,were subjected to make spinal cord injury models.MATHODS:After 3 days injection with bromodeoxyuridine 50 mg/kg per day,BMSCs were isolated from bone marrow of healthy rats.All the rats were underwent spinal cord injury by NYU impactor.All 90 rats were randomly divided into 3 groups,with 30 for each group.Rats in the mobilization group were subcutaneously injected with grenulocyte-colony stimulating factor for 7 days,20 mg/kg per day.In surgical transplantation group,a total of 0.3 mL (1×10~(10)/L) BMSCs were transplanted into injured area of spinal cord.Rats in control group were given the same volume of saline (0.3 mL) into injured area of spinal cord.All the rats were injected with 50 mg/kg bromodeoxyuridine daily at day 3 before surgery for 10 days in each group.MAIN OUTCOME MEASURES:The Basso-Beattie-Brasnahan (BBB) locomotor score was used to evaluate functional recovery in rat hindlima at 3 days,1,2,4 and 8 weeks after SCI.Motion evoked potential (MEP) and somatosensory evoked potential (SEP) tests were performed to defect the neural pathway so as to evaluate recovery of injured spinal cord.The cell structural changes and the expression and distribution of Brdu,glial fibrillary acidic protein (GFAP),and neuron specific enolase (NSE) were observed by pathological and immunohistochemical methods.and 8 weeks after injury (P ＜ 0.05),but there was no significant difference between the mobilization group and surgical was increased in the mobilization group and surgical transplantation group compared with the control group (P ＜ 0.05-0.01),but Histopathology showed that there were less empty,necrosis and GFAP-positive glial scar tissue,more Brdu-positive cells and NSE-positive cells in the mobilization group and surgical transplantation group than in the control group.CONCLUSION:Autologous BMSCs mobilization transplantation and surgery transplantation could significantly reduce the degree of SCI,and promote the recovery of the spinal cord function after injury for treating SCI.Compared between the two,mobilization of autologous BMSCs are more convenient,non-invasive,more likely to seize the opportunity to treatment.
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OBJECTIVE: In recent years, in the field of neurosurgery, people have tried to study the mesenchymal stem cells(MSCs) transplantation for treatment of spinal cord injury and review its related studies.DATA SOURCES: We did a computer-search of Medline for spinal cord injury related articles published in English from January 1990 to November 2004, with the key words of "mesenchymal stem cells, transplantation,spinal cord injury". Meanwhile, We also searched Chinese Biomedical Literature Database (CBM) for bone marrow-derived mesenchymal stem cells for transplantation of spinal cord injury related articles published from January 1990 to November 2004, with the key words of "mesenchymal stem cells, transplantation, spinal cord injury" in Chinese.STUDY SELECTION: All articles were selected firstly, and those relevant to progression of mesenchymal stem cells transplantation in spinal cord injury therapy were collected. The full texts of the rest literatures were looked up and the latest evolutional articles were enrolled.DATA EXTRACTION: A total of 32 articles about the mesenchymal stem cells transplantation in spinal cord injury therapy were collected. After the exclusion of repetitive or similar studies, 19 articles met our criteria.DATA SYNTHESIS: Aiming at the spinal cord injury therapy by means of mesenchymal stem cells transplantation, the viewpoints of collected articles were summarized. We found bone marrow derived mesenchymal stem cells could supply lesioned part as filler. Directional regeneration accomplishes the construction of the function that transfers up and down for the nerve cell anchor through surrounding structure. The microenvironment which can inhibit the regeneration of the glial cell, protect the survival of nerve cell body, promote the regeneration of autogenic nerve cells shall be created in transplant. The international successful experience was introduced emphatically, and the most hopeful outlook was suggested.CONCLUSION: The transplanted MSCs survive, migrate to the injury site and differentiate into neurons and astrocytes. Transplantation of MSCs following spinal cord injury may improve the recovery of spinal function and may be an effect way in treating spinal cord injury.
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31 patients with cysticercosis of cerebral ventricles verified by operation or pathological investigation were reported. All patients were between 7 and 64 years of age and 14 were females. All had a single cyst. Since 29 patients (94%) were without a history of intestinal taeniasis, it was proposed that most patients of cysticercosis of cerebral ventricles were caused by hetero-infection and the entrance of Cysticercus into brain ventricle was through choroid plexus along the cerebro-spinal fluid. This is probably the reason why it occurs mostly in the 4th ventricle. The clinical manifestation of cysticercosis of cerebral ventricles were paroxysmal headache and vomiting caused by increased intracranial pressure. Ventricu-lography and CT scanning have considerable diagnostic value. Removal of Cysticercus by surgical operation is successful (Figs. 1 - 8).