OBJECTIVE: To analyze the forensic pathological characteristics of sudden death caused by pulmonary thromboembolism and the chronological transformation of thrombus and explore the assessment method of the causal relationship between previous trauma and the following fatal PTE episode. METHODS: All the 23 cases reviewed here were collected from our institute files from the year of 1998 to 2008. RESULTS: Trauma, surgery and braking etc. were all risky factors of PTE. Of these cases, 12 cases were caused by trauma, 21 cases were caused by surgery and 22 cases died in hospitals which were often happened one or two weeks after injury or one week's postoperative time. Of all the cases, 6 cases had single attack of thrombus and the rest 17 cases had the recurrence of thrombus. The number of the leg deep vein to be the embolic source was 16 cases which were often seen in the left leg. CONCLUSION It is important to confirm the embolic source, trauma, surgery and chronological events in determing the sudden death with PTE.
Adolescent ; Adult ; Aged ; Autopsy ; Cause of Death ; Child ; Death, Sudden/etiology* ; Expert Testimony ; Female ; Forensic Pathology ; Humans ; Leg/blood supply* ; Male ; Middle Aged ; Pulmonary Artery/pathology* ; Pulmonary Embolism/pathology* ; Retrospective Studies ; Risk Factors ; Venous Thrombosis/pathology* ; Wounds and Injuries/complications* ; Young Adult

Objective To investigate the frequency and mutational status of JAK2V617F mutation in Chinese patients with chronic myeloproliferative disorders(CMPD) and to study the relative quantification of mutated JAK2 mRNA and the clinical significance. Methods JAK2V617F mutation and the mutational status were screened with amplification-refractory mutation system polymerase chain reaction(ARMS-PCR), the relative quantification of mutated JAK2 mRNA was studied by using capillary electrophoresis. Results A higher prevalence of JAK2V617F in either the heterozygotc or homozyote status in essential thrombocythemia (ET) was observed in elderly patients with ET (P<0.05). The presence of JAK2V617F was found to be significantly correlated with the age at diagnosis (P<0.05); patients with age ≥ 60 years showed significantly higher JAK2 mutated RNA levels than those with age < 60 years (P<0.05); the presence of JAK2V617F in polycythemia vera (PV) and ET was found to be significantly associated with higher hemoglobin level and higher leukocyte count (P< 0.05). In addition, higher leukocyte count was observed in homozygous ET patients than in heterozygous ET patients (P<0.05). The frequency of JAK2V617F mutation and the prevalence of homozygote in PV patients were higher than those in ET patients (P<0.05). The differences of JAK2V617F mRNA levels among PV, ET and chronic idiopathic myelofibrosis (IMF) were not significant. Conclusions ARMS-PCR technique can be used to detect the frequency and mutational status of JAK2V617F mutation owing to its sensitivity and along with capillary electrophoresis, quantitative assay for mutated JAK2 mRNA, diagnosis of CMPD and judgement of prognosis become possible.

OBJECTIVETo investigate the prevalence of human papillomavirus (HPV) and the HPV genotype distribution in invasive squamous cell carcinoma of the uterine cervix in the Mongolian women in Inner Mongolia autonomy region.

METHODSThe prevalence data of HPV in our department were retrospectively reviewed. INNO-LiPA genotyping technique was used to detect HPV genotypes in the reserved carcinoma tissue specimens.

RESULTSTotally 63 tissue specimens were collected and detected. The prevalence of HPV was 93.7%. The positive rates of HPV among different clinical staging and different pathological grading were not significantly different (P >0.05). The prevalence of HPV16 was not significantly different among different age groups (P>0.05). HPV16 (69.8%), HPV18 (4.8%), HPV31 (4.8%), HPV39 (4.8%), and HPV52 (3.2%) were the 5 dominating HPV genotypes in all cases.

CONCLUSIONSHPV infection is closely correlated with invasive squamous cell carcinoma of the uterine cervix in Mongolia women. HPV16 is the most important genotype in invasive squamous cell carcinoma of the uterine cervix, followed by HPV18, 31, and 39. HPV infection dose not affect the progression and differentiation of invasive squamous cell carcinoma of the uterine cervix.

Adult ; Aged ; Asian Continental Ancestry Group ; Carcinoma, Squamous Cell ; virology ; Female ; Genotype ; Humans ; In Vitro Techniques ; Middle Aged ; Papillomaviridae ; classification ; genetics ; Papillomavirus Infections ; genetics ; virology ; Polymerase Chain Reaction ; Uterine Cervical Neoplasms ; virology

Objective To evaluate the effects of problem-based learning (PBL) teaching model in breast cancer medical imaging education based on multidisciplinary treatment (MDT). Methods The PBL teaching practice of breast cancer imaging based on MDT was carried out in the 192 clinical medicine students in Grade 2014 of Guangzhou Medical University. The students were randomly divided into four groups (group A, B, C and D) and each group was further divided into 1 to 5 teams, with 9 to 11 students in each team. The MDT teaching team consisted of clinical physicians in medical imaging, radiation oncology, surgery (specialized in breast tumor), and other disciplines. The formative assessment method was used to evaluate the teaching effects and the problems involved wereanalyzed. Results Firstly, with a full score of 100 points, the quantitative evaluation of each teaching team on the performance of students in PBL were (86.6±7.8), (87.1±8.1), (83.9±6.5), (88.1±4.5), and (85.1±8.2), respectively. No significant difference was found among each tutor team’s quantitative evaluation (F=1.014, P=0.388). Secondly, the whole posi-tive evaluation rate of students for tutors was 96.28%, with the highest and lowest positive rates as 98.36% and 94.08%, respectively. Significant difference was found among parts of the tutors ( χ2=10.554, P=0.032), specifically between team 1 and 5 (Z=2.245,P=0.025), 3 and 4 (Z=2.217,P=0.027) and 3 and 5 (Z=2.761,P=0.006) respectively. Lastly, the positive and negative evaluation rates of student's self-assessment were 87.33% and 12.67% respectively. Conclusion The effects of PBL based on MDT in breast cancer imaging teaching practice is encouraging, and the formative assessment method can objectively and effectively evalu-ate the effects of this kind of teaching model. However, the standards of evaluation still need to be further perfected and improved.

OBJECTIVETo study the biological function of killer cell immunoglobulin-like receptor (KIR) and the role of donor inhibitory KIR and recipient genetic background in HLA matched unrelated hematopoietic stem cell transplantation (HSCT).

METHODSHLA genotype of 51 patients (ALL 18 cases, CML 15 cases, AML 10 cases and others 8 cases) and their respective matched unrelated donors from Database of China Marrow Registration was determined by polymerase chain reaction sequence oligonucleotide probes (PCR-SSOP) and sequence specific primers (PCR-SSP). The KIR genotype was determined by PCR-SSP.

RESULTSAll the patients and the donors expressed KIR2DL1, KIR2DL2/L3, KIR2DL4, KIR3DL2 and KIR3DL3. 96.7% individuals expressed KIR3DL1. Among them, 21.57% of KIR was completely identical, while 78.43% was not. Of the non-identical KIRs, 25.49% were the recipient's KIR genotype containing the donor's ones, and 27.45% was the donor's containing the recipient's. 74.62% of donor's KIR2DL1 lacked recipient's C2 ligand, 5.91% of donor's KIR2DL2/L3 lacked recipient's C1 ligand, 19.74% of donor's KIR3DL1 lacked recipient's Bw4 ligand and 54.91% of donor's KIR3DL2 lacked recipient's A3, A11 ligand.

CONCLUSIONKIR genotype and HLA class I antigen are inherited independently. KIR2DLI and KIR3DL2 of donors may cause alloreactivity of NK cell. The mismatch of KIR/HLA in donor-recipient plays a very important role in matched unrelated allo-HSCT. The outcome of HSCT can be better predicted by the model of the presence of KIRs on the donor' sNK cells and the absence of corresponding KIR ligand in the recipient's HLA.

Adolescent ; Adult ; Child ; Child, Preschool ; Female ; Gene Frequency ; Genotype ; HLA Antigens ; genetics ; Hematopoietic Stem Cell Transplantation ; Humans ; Infant ; Killer Cells, Natural ; immunology ; Male ; Receptors, KIR ; genetics ; Transplantation, Homologous

This study was to investigate the relationship between Clostridium difficile associated diarrhea (CDAD) and intestinal microecosystem in patients received allogeneic hematopoietic stem cell transplantation (allo-HSCT) and to clarify clinical characteristics of intestinal microecosystem disorder. Clostridium difficile (CD) was isolated and identified by enzyme-linked-immunosorbent assay using clostridium difficile Premier toxins A&B Kit and anaerobic culture in 44 cases with diarrhea. Fecal flora (bifidobacteria, lactobacillus, bacteroides, peptostreptococcus, Clostridium perfringens, enterobacteriaceae, enterococcus, and yeasts) of patients were quantitatively and qualitatively analyzed by Mitsuoka's methods. The results showed that CDAD occurred after using antibiotic or chemotherapy. Clostridium difficile was detected in 12 patients with diarrhea (positive rate was 27.27%). There was marked changes of intestinal microecosystem when patients suffered from CDAD. The number of lactobacillus, bifidobacteria, bacteroides, enterobacteriaceae and so on decreased significantly. It was effective to treat CDAD with vancomycin, metronidazole and probiotic, but the recurrence rate was 16.67%. In conclusion, CDAD complicated by allo-HSCT is related to change of intestinal microecosystem. While treating CDAD with the sensitive antibiotic, the intestinal flora of patients should be supported actively. This treatment contributes to improving disease status and reducing diarrhea recurrence.
Adolescent ; Adult ; Anti-Bacterial Agents ; adverse effects ; therapeutic use ; Child ; Clostridium Infections ; microbiology ; Clostridium difficile ; growth & development ; Diarrhea ; microbiology ; Female ; Hematologic Neoplasms ; therapy ; Hematopoietic Stem Cell Transplantation ; adverse effects ; Humans ; Male ; Middle Aged ; Young Adult

The objective of this study was to identify the frequency and types of JAK2V617F mutation in chinese patients with essential thrombocythemia (ET), to quantitatively detect the level of mutation transcripts and to investigate its clinical significance. The frequency and types of JAK2V617F mutation were detected by amplification-refractory mutation sequencing polymerase chain reaction (ARMS-PCR), the transcript level of JAK2V617F mutation was determined by using capillary electrophoresis. The results indicated that the JAK2V617F mutation was detected in 59 out of 98 patient with ET, 18 of whom were homozygous mutation. The mean age of patients with homozygous and heterozygous mutation was higher than that of patients with wild type mutation (p < 0.05). The quantitative assay using capillary electrophoresis showed that the transcript level of JAK2V617F mutation in patients with homozygous mutation was (89.9 +/- 6.7)%, which was higher than that in patients with heterozygous mutation (57.1 +/- 6.7)% (p < 0.05); the transcript level of JAK2V617F mutation in patients with age < 60 years was (62.3 +/- 16.5)%, which was lower than that in patients with age > 60 years (72.4% +/- 15.8)% (p < 0.05). The rate of thrombotic complications in patients with JAK2V617F-positive was higher than that in patients with JAK2V617F-negative in which the rate of thrombotic complication in patients with homozygous mutation was higher than that in patients with heterozygous mutation (p < 0.05). Compared with patients without thrombotic events, there were higher level of transcripts of JAK2V617F mutation in patients with thrombotic events. It is concluded that the JAK2V617F positive and negative patients with ET display the different clinical features, therefore, the analysis of mutation types and detection of transcript levels not only helps to identify the disease status and progression, but also guides the treatment of ET patients.
Adolescent ; Adult ; Aged ; Aged, 80 and over ; Female ; Genotype ; Humans ; Janus Kinase 2 ; genetics ; Male ; Middle Aged ; Mutation ; Thrombocythemia, Essential ; genetics ; pathology ; Young Adult

OBJECTIVETo investigate the frequency and mutational status of JAK2 mutation in Chinese patients with chronic myeloproliferative neoplasms (MPN) and study the relative quantitation and clinical implications of mutated JAK2 transcript.

METHODSJAK2 mutation and the mutational status were screened with amplification-refractory mutation sequencing polymerase chain reaction (ARMS-PCR), the relative quantity of mutated JAK2 mRNA by using capillary electrophoresis.

RESULTSJAK2V617F mutation was detected in 95 of 135 MPN patients, including 37 (97.4%) of 38 polycythemia vera (PV), 56 (59.6%) of 94 essential thrombocythemia (ET) and 2 of 3 idiopathic myelofibrosis (IMF) patients; the difference between the mutations in PV and ET was significant (P<0.05). Of 95 JAK2V617F patients examined, 18/38 PV patients (47.3%) and 17/94 (18.1%) ET patients and 1 IMF patient were homozygotes, and ET patients showed lower prevalence of homozygote (P<0.05). In 95 MPN patients, the mutated mRNA ratio was higher in homozygote than in heterozygote patients. PV heterozygote patients showed higher levels of mutated JAK2 mRNA than ET heterozygote patients (P<0.05). The levels of JAK2V617F mRNA in patients over 60 years of age were significantly higher than that in those less than 60 years of age (P<0.001). Higher leukocyte counts were observed in PV and ET patients with higher levels of mutated JAK2 mRNA (P<0.05). The presence of JAK2V617F was found to be significantly associated with higher hemoglobin level in ET patients. Cytogenetic analysis was performed in 101 of the 135 patients, the association between abnormal karyotype and JAK2V617F was not found.

CONCLUSIONThe ARMS-PCR technique can be used to detect the frequency and mutational status of JAK2V617F mutation, and along with capillary electrophoresis, the estimation of minimal residual disease becomes possible.

Adolescent ; Adult ; Aged ; Aged, 80 and over ; DNA Mutational Analysis ; Electrophoresis, Capillary ; Female ; Humans ; Janus Kinase 2 ; genetics ; Male ; Middle Aged ; Mutation ; Myeloproliferative Disorders ; genetics ; Polymerase Chain Reaction ; methods ; RNA, Messenger ; genetics ; Young Adult

The common development of multi-disciplinary intersection is a hot spot in the research of acupuncture- moxibustion translational medicine. This article analyzes the current situation and reasons for slow development of acupuncture-moxibustion translational medicine, takes acupuncture-moxibustion for depressive disorder as an example, takes acupuncture and moxibustion literature, clinical evidence-based, biological mechanism and medical equipment research and development as the main line, expounds potential strategies to promote the development of acupuncture-moxibustion translational medicine under the background of multi-disciplinary intersection innovation, and discusses the future research direction of acupuncture-moxibustion translational medicine.
Translational Science, Biomedical