Objective To investigate the clinical and pathologic characteristics of rectal gastrointestinal stromal tumor (GIST),and to evaluate the management of rectal GIST. Methods The clinical and pathological data of 19 cases of rectal GIST in recent 19 years were studied retrospectively. Results The diagnosis of 19 cases of rectal GIST were identified by surgery and pathology. Most rectal GISTs were spindle cell type. Immunohistochemical analysis displayed positive reactivity for CD117(100%) and CD34(73. 7% ). Graded by aggressive behavior there were 4 cases of high risk, 3 cases of intermediate risk, 5 cases of low risk and 7 cases of very low risk. Conclusions Rectal GISTs have a low prevalence and have no specific symptom in the early stage. Most tumors are low risk in aggressive behavior. It is difficult to get an accurate pathological diagnosis before operation and difficult to decide whether a sphincter preserving procedure is justified however trans-anal local resection is the therapy of choice for low risk submucosal rectal GIST(

AIMTo develop the chemical characteristics of Panax notoginseng in order to control its quality.

METHODSThe samples was extracted using pressurized liquid extraction (PLE) and analyzed by HPLC-DAD. The data were evaluated using the "similarity evaluation system for chromatographic fingerprint of TCM" software (version 2004A).

RESULTSThe chromatographic characteristics of 28 Panax notoginseng from different places were established using HPLC-DAD, and 8 peaks among 13 typical ones in the chromatograms were identified by comparing with their reference compounds. The similarity of different samples was high (0.982 +/- 0.008, RSD = 0.78%).

CONCLUSIONThe chromatographic characteristics are useful to control the quality of Panax notoginseng.

Chromatography, High Pressure Liquid ; methods ; Ginsenosides ; analysis ; Panax notoginseng ; chemistry ; Quality Control ; Reproducibility of Results

A 45-year-old male car driver died in a traffic accident of four cars rear-end collision on the highway. He was found to have died after a respiratory and cardiac arrest at the scene. No sign of skin injuries was observed from the external inspection. The autopsy was not permitted by the family members because of the local culture. Multislice computed tomography (MSCT) was applied to the current case, showing dislocation of C3~4 cervical vertebrae with Ⅱ degree, C4 vertebral plate fractures, and spinal stenosis. Post-mortem MSCT confirmed the diagnosis as whiplash injuries. MSCT was verified to be effective in showing the severity of whiplash injuries, thus providing certain objective evidence for medicolegal expertise.

Aged ; Angioplasty, Balloon, Coronary ; adverse effects ; Coronary Vessels ; injuries ; Drug-Eluting Stents ; Humans ; Male ; Polytetrafluoroethylene ; chemistry ; therapeutic use

The injury of the penile cavernous nerve is a common cause of erectile dysfunction (ED). Reconstruction of the resected cavernous nerve can restore penile erectile function to normal. The methods for cavernous nerve repair include direct anastomosis, autotransplantation of the nerve, and substitution of the biodegradable artificial nerve, among which only autotransplantation of the sural nerve is used clinically at present. Besides, the nerve growth factor plays an important role in nerve reconstruction. This paper summarizes the methods of cavernous nerve reconstruction in the recent years.
Humans ; Male ; Nerve Regeneration ; Nerve Tissue ; surgery ; transplantation ; Neurosurgical Procedures ; methods ; Penile Erection ; Penis ; innervation

The rhizome of Panax japonicus var. major have been used as the natural medicinal agent by Chinese traditional doctors for more than thousand years. Most of the therapeutic effects of P. japonicus var. major had been reported due to the presence of tetracyclic or pentacyclic triterpene saponins. In this study, Illumina pair-end RNA-sequencing and de novo splicing were done in order to understand the pathway of triterpenoid saponins in this species. The valid reads data of 15. 6 Gb were obtained. The 62 240 unigenes were finally obtained by de novo splicing. After annotation, we discovered 19 unigenes involved in ginsenoside backbone biosynthesis. Additionally, 69 unigenes and 18 unigenes were predicted to have potential function of cytochrome P450 and UDP-glycosyltransferase based on the annotation results, which may encode enzymes responsible for ginsenoside backbone modification. This study provides global expressed datas for P. japonicus var. major, which will contribute significantly to further genome-wide research and analysis for this species.
Gene Expression Profiling ; Panax ; genetics ; Saponins ; biosynthesis ; Sequence Analysis, RNA

Objective To explore the application value of multi-slice spiral computed tomography (MSCT) in traffic accidents through observing and analyzing the injury features of the accidents. Methods Two fatal cases caused by traffic accidents were fully examined using MSCT, 3D imaging reconstruction and angiography through cardiac puncture. The features of traffic injury mechanism were analyzed through combination of MSCT and postmortem external examination. Results In case 1, right cardiac rupture was found by MSCT and angiography through cardiac puncture. The cause of death was cardiac tam-ponade and right ventricular rupture due to the crush injury of chest in the traffic accident. In case 2, splenic rupture and intra-abdominal hemorrhage was found and caused by injury of left trunk by MSCT. The cause of death was hemorrhage and traumatic shock. Conclusion MSCT could observe skeletal in-jury, soft tissue injury, and hematologic disorder well. The combination use of MSCT and angiography through cardiac puncture provided assistance to the diagnosis of cardiovascular system injury.

A 45-year-old male car driver died in a traffic accident of four cars rear-end collision on the highway. He was found to have died after a respiratory and cardiac arrest at the scene. No sign of skin injuries was observed from the external inspection. The autopsy was not permitted by the family members because of the local culture. Multislice computed tomography (MSCT) was applied to the current case, showing dislocation of C3-4 cervical vertebrae with II degree, C4 vertebral plate fractures, and spinal stenosis. Post-mortem MSCT confirmed the diagnosis as whiplash injuries. MSCT was verified to be effective in showing the severity of whiplash injuries, thus providing certain objective evidence for medicolegal expertise.
Accidents, Traffic ; Autopsy ; Humans ; Male ; Middle Aged ; Multidetector Computed Tomography ; Spinal Fractures ; Whiplash Injuries/diagnostic imaging*

A case of a stillbirth with lethal type II osteogenesis imperfecta (OI) was reported. The fetus had skull fractures and craniocerebral injuries during pregnancy. Postmortem multi-sliced computed tomography (MSCT) and 3D-reconstruction were performed, followed by a medico-legal autopsy. The autopsic findings showed the typical features of type II OI, including a soft calvarium, deformed extremities, flexed and abducted hips, and uncommon features, such as white sclera, coxa vara, absence of several bones and organs, a cleft lip, and asymmetric ears. The radiologic images revealed such anomalies and variations as a cleft palate, mandibular dysplasia, spina bifida, costa cervicalis, and fusion of the ribs and vertebrae, which were difficult to detect during conventional autopsy. The paper investigated the classification, causative mutation, cause of death, and the differentiation of OI from child abuse, coming to a conclusion that OI knowledge can be of great importance to forensic pathologists and that the merits of postmortem MSCT should be emphasized in forensic pathologic examinations.
Autopsy ; Child ; Death ; Fatal Outcome ; Female ; Fetus ; Forensic Pathology ; Humans ; Infant, Newborn ; Multidetector Computed Tomography/methods* ; Osteogenesis Imperfecta/physiopathology* ; Pregnancy ; Ribs ; Skull/pathology*

BACKGROUNDThis study transferred a recombinant gene encoding human insulin like growth factor-1 (hIGF-1) into modified primary skeletal myoblasts with a retroviral vector (pLgXSN) and determined whether the hIGF-1 promoted growth of skeletal muscle in rat.

METHODShIGF-1cDNA was amplified in vitro from normal human liver cells by using RT-PCR and cloned into plasmid vector pLgXSN. The recombinant vector pLghIGF-1SN and control vector pLgGFPSN were transfected into packaging cell PT67 and G418 was used to select positive colony. Myoblasts were infected with a high titre viral supernatant and transduction efficiency was evaluated as GFP expression. The expression of hIGF-1 mRNA in myoblasts was investigated by immunocytochemistry and RT-PCR. MTT assays detected the growth of myoblasts in vitro. Myoblasts transduced with pLghIGF-1SN were injected into hind limb muscles of 10 - 12 week male SD rats. Formed tissues were harvested 4 weeks later. Myocyte diameter, mean weight of hind limb and body were measured to evaluate the skeletal muscle growth.

RESULTSRecombinant retroviral plasmid vector pLghIGF-1SN was constructed successfully. The titre of the packaged recombinant retrovirus was 1 x 10(6) cfu/ml. The transfection rate of PT67 cells reached 100% after G418 screening. hIGF-1 expression was positive in myoblast-IGF-1. The proliferation rate of myoblast-IGF-1 in vitro was higher than GFP-myoblast or myoblast (P < 0.05). The mean weights of hind limb and body of rats injected myoblast-IGF-1 were higher than those of the rats injected with myoblast-GFP or myoblast (P < 0.05). Myocyte diameter had a significant increase in IGF-1 group compared to GFP group and myoblast group (P < 0.05).

CONCLUSIONSThe transfection of the human IGF-1 gene mediated by a retroviral vector can promote the growth of skeletal muscle in rats. Genetically modified primary skeletal myoblasts provide a possibly effective approach to treat some skeletal muscle diseases.

Animals ; Cells, Cultured ; DNA, Recombinant ; genetics ; Genetic Vectors ; Insulin-Like Growth Factor I ; genetics ; physiology ; Muscle, Skeletal ; growth & development ; Myoblasts ; physiology ; Rats ; Rats, Sprague-Dawley ; Retroviridae ; genetics ; Transfection