Acute Disease ; Child ; Humans ; Respiratory Tract Infections ; virology

China ; Diarrhea ; prevention & control ; virology ; Humans ; Viral Vaccines ; immunology ; Virus Diseases ; prevention & control

Child, Preschool ; Communicable Disease Control ; Diarrhea ; prevention & control ; virology ; Female ; Humans ; Infant ; Infant, Newborn ; Male ; Virus Diseases ; prevention & control ; virology ; Virus Physiological Phenomena ; Viruses ; isolation & purification

Administration, Oral ; Humans ; Rotavirus Infections ; immunology ; prevention & control ; Viral Vaccines ; administration & dosage ; immunology

BACKGROUND:In the repair of urinary tract defects, we have been actively trying to construct the urinary tract substitutes with normal physiological function through combining ideal seed cel s and proper scaffold materials by tissue engineering method. OBJECTIVE:To investigate the biocompatibility of bone marrow mesenchymal stem cel s with rabbit bladder acel ular matrix scaffold. METHODS:Rabbit bone marrow mesenchymal stem cel s were isolated and cultured using density gradient centrifugation method. Passage 3 rabbit bone marrow mesenchymal stem cel s were cultured on the rabbit bladder acel ular matrix. The cel s were counted every day for 12 days, to drawn a cel growth curve. Bone marrow mesenchymal stem cel s cultured alone were used as control group. RESULTS AND CONCLUSION:Bone marrow mesenchymal stem cel s were successful y seeded onto the bladder acel ular matrix. Under the inverted microscope, the cel s grew out of the bladder acel ular matrix, and a great amount of long spindle-shaped cel s were found around the bladder acel ular matrix. With 5 days of inoculation, the cel s in the two groups grew gently;at 6-9 days, the cel growth curve gradual y became steeper, and the cel division and growth were increased exponential y;at 10-12 days, the cel s recovered to a gentle state. Cel growth curves in the two groups were basical y coincident, suggesting that rabbit bone marrow mesenchymal stem cel s have good biocompatibility with the bladder matrix.

Animals ; Extremities ; blood supply ; Ischemia ; metabolism ; Male ; Myocardial Reperfusion Injury ; metabolism ; Nitric Oxide ; blood ; Oxidative Stress ; Rats ; Rats, Wistar

Objective To evaluate the applicable and clinical value of CT and radiography in the dignosis of acetabular fractures.Methods The data of CT,X-ray and clinical treatment in 18 cases with acetabular fractures were analyzed and comparatively.Results There were 4 cases of the anterior wall fracture,4 cases of the anterior column fracture,2 cases of the posterior wall fracture,2 cases of the posterior column fracture and ,6 cases of complex fracture,11 cases were in company with swelling of the soft tissue in pelvic cavity.Of them,4 cases misdiagnosed by radiography.27 pieces of bone fragment were detected by CT,including 17 pieces of them in joint cavity.12 pieces of bone fragment were detected by X-ray,only 4 pieces of them were in joint.3 cases with femoral head fracture were included in 7 cases of the hip joint dislocation,1 case of them was misdiagnosed by X-ray.Conclusion In detecting the bone fragments in articular space,the type of acetabular fractures and soft-tissue swelling,CT is super to radiography.

Animals ; Apoptosis ; Extremities ; blood supply ; Kidney ; pathology ; Male ; Nitric Oxide ; physiology ; Random Allocation ; Rats ; Rats, Wistar ; Reperfusion Injury ; pathology ; physiopathology

Human bocavirus (HBoV) 1-4 have been detected both in respiratory and stool samples since the first HBoV was discovered in 2005. HBoV-1 is mostly associated with respiratory infection, while HBoV 2-4 are usually associated with intestinal tract infection. A variety of signs and symptoms have been described in patients with HBoV infection, including cough, wheezing, pneumonia, and diarrhea, but the research on pathogenic mechanism of HBoV is limited because HBoV cannot be cultured in vitro due to the lack of appropriate host cells. Three-dimensional epithelial cell culture, reverse genetics, and viral metagenomics are identified as novel tools that may promote the research on pathogenic mechanism of HBoV and the discovery of new viruses. This review summaries currently available diagnostic approaches such as electron microscopy, cell culture, PCR, and immunoassay in order to provide a method reference for indepth research on HBoV.
Animals ; Human bocavirus ; genetics ; growth & development ; isolation & purification ; pathogenicity ; Humans ; Parvoviridae Infections ; diagnosis ; virology ; Viral Proteins ; genetics ; metabolism ; Virology ; methods ; Virulence ; Virus Cultivation

Human adenovirus (HAdV) is one of the most important pathogens in infants and young children with acute respiratory infections and other diseases. This article reviews the literature on HAdV, including its molecular biological characteristics, detection and typing, and pathogenic mechanism, the clinical features and epidemiological characteristics of HAdV-related diseases, and the prevention and control of HAdV infections. So far, 67 types of HAdV have been identified, including recombinant variants discovered in recent years. The major epidemic strains that cause acute respiratory infections are HAdV-3 and HAdV-7, both of which belong to the subgroup B. HAdV often leads to acute respiratory infections, but it also causes diseases of other systems. HAdV-related diseases have similar clinical manifestations as those caused by other respiratory viruses, but often accompanied by gastrointestinal symptoms. The pathogenic mechanism of HAdV remains unclear, especially for the new recombinant variants, due to few studies on their association with diseases. Because there are no prospective, large randomized controlled trials of HAdV infections, the treatment of HAdV infections is controversial. Vaccine is the most effective measure to reduce respiratory HAdV infections, but it is still not commercially available.
Adenovirus Infections, Human ; virology ; Adenoviruses, Human ; classification ; genetics ; isolation & purification ; physiology ; Animals ; Humans