A lot of experimental findings have confirmed that: Animal cells acquire a spherical shape just before the division; Under biochemical stimulus of mitotic apparatus aster the cells form a contractile ring in equator plane, and the mother cell divides into two daughter cells; meanwhile the total volume keeps constant. In Zinemanas and Nir's model the reorientation of microfilament and the visco-elasticity of cortex have been took into consideration. In our present work, the effective coefficient m due to biochemical stimulus was incorporated into the model, and the local distribution C was modified to diffuse with the plasma membrane motion. The numerical results showed that the formation of a contractile ring and parameters such as the surface tension in the furrow and internal pressure can be predicted successfully. Compared with Zinemanas and Nir's model, the results of our model are more correspondent with the experimental results. It can be concluded that the effective coefficient m has limited effects on the process control of cytokinesis.
Animals ; Biomechanical Phenomena ; Cytokinesis ; Humans ; Models, Biological ; Surface Tension

OBJECTIVETo observe the effects of Tongfu Decoction (TFD) on the gastric emptying of normal rats, thus exploring whether it could promote gastric emptying rapidly.

METHODSThirty Sprague-Dawley (SD) rats were randomly divided into 3 groups, i.e., the normal control group, the domperidone group, and the TFD group, 10 in each group. They were respectively administered with normal saline, the domperidone suspension, and TFD by gastrogavage. Thirty min later the gastric emptying of mice was detected by single photon emission computed tomography technology (SPECT) labeled with 99m Tc-DTPA, and the gastric half-emptying time and the gastric emptying rate were calculated.

RESULTSThe gastric half-emptying time was (19.0 +/-1.7) min in the normal control group, (12.9 +/- 3.4) min in the domperidone group, and (12.7 +/- 4.1) min in the TFD group. Compared with the normal control group, the gastric half-emptying time was significantly shortened in the domperidone group and the TFD group (P <0.05). The gastric emptying rate at 15 min was 41.1% +/- 5. 8% in the normal control group, 52.9% +/- 10.9% in the domperidone group, and 56.0% +/- 10.3% in the TFD group, while at 30 min it was 65.6% +/- 2.8%, 72.9% +/- 2.6%, and 72.4% +/- 4.9%, respectively. Compared with the normal control group, the gastric emptying rate at 15 min and 30 min both significantly increased in the domperidone group and the TFD group (P <0.05). There was no statistical difference in the gastric half-emptying time or the gastric emptying rate between the two groups (P >0.05).

CONCLUSIONTFD showed similar effects as domperidone in rapidly promoting gastric emptying, and could shorten the gastric half-emptying time in normal rats.

Animals ; Domperidone ; pharmacology ; Drugs, Chinese Herbal ; pharmacology ; Gastric Emptying ; drug effects ; Male ; Rats ; Rats, Sprague-Dawley

Objective To understand the status of healthcare-associated infection(HAI)management in traditional Chinese medicine hospitals as well as integrated traditional Chinese and Western medicine hospitals in Fujian Pro-vince,analyze the existing problems and weak links,and put forward corresponding improvement measures.Methods A questionnaire was designed through literature and expert consultation,from March to April 2016,42 secondary and above traditional Chinese medicine hospitals as well as integrated traditional Chinese and Western medicine hos-pitals in 8 cities of Fujian Province were conducted on-site investigation,data were analyzed.Results A total of 42 hospitals participated in the investigation,92.86% were traditional Chinese medicine hospitals,7.14% were inte-grated traditional Chinese and Western medicine hospitals;all hospitals set up HAI management committees and HAI management groups of clinical departments,there were 100 HAI management professionals(66 were full-time,34 were part-time),nursing staff accounted for 63.00%,junior college and undergraduate personnel accoun-ted for 84.00%,staff with intermediate and senior professional titles accounted for 79.00%.There were significant differences in academic disciplines and education levels among administrators in secondary and tertiary hospitals(P<0.05). All hospitals carried out HAI case surveillance,only 2.38% achieved HAI informational software monito-ring,83.33% carried out comprehensive and targeted monitoring,42.86%,71.43%,and 80.95% of hospitals car-ried out targeted monitoring on multidrug-resistant organisms,surgical site infection,and intensive care unit respec-tively.Conclusion The environment of majority of Chinese medicine hospitals in Fujian Province improved signifi-cantly,organizations of HAI management is rational,staffing and quality of HAI management personnel is imbal-anced,HAI monitoring is still at preliminary stage,lack information management,HAI management in key depart-ments is not optimistic.

OBJECTIVETo observe the clinical efficacy of electroacupuncture (EA) on mild cognitive impairment (MCI) for patients of Uygur and Han nationality and explore the national diversity among the patients with MCI.

METHODSTwenty-five cases were divided into Han nationality group (15 cases) and Uygur nationality group (10 cases) according to patient's nationality. In either group, EA was applied to Baihui (GV 20), Fengchi (GB 20), Xuanzhong (GB 39), Fuliu (KI 7), Sanyinjiao (SP 6) and Taixi (KI 3), once per day, 15 treatments made one session and there were 5 days at the interval among the sessions. Totally, 3 sessions of treatment were required. The proton magnetic resonance spectroscopy (1H-MRS) was used to observe the changes in the ratio of N-acetylaspartate and creatine (NAA/Cr) on the left hippocampus for the patients in two groups before and after treatment as well as the changes in the results of the Mini-Mental State Examination (MMSE) and the Montreal Cognitive Assessment (MoCA) separately.

RESULTSNAA/Cr in Uygur nationality group was higher than that in Han nationality group before treatment (1.659 +/- 0.418 vs 1.137 +/- 0.190, P < 0.05). After treatment, MMSE and MoCA scores all increased apparently as compared with those before treatment in two groups (P < 0.05, P < 0.01), and NAA/Cr on the left hippocampus in either group was up-regulated as compared with that before treatment (both P < 0.01).

CONCLUSIONEA can improve the overall cognitive function for the patients with MCI. There is the national diversity in the partial brain metabolite level between Uygur patients and Han patients with MCI.

Aged ; Aged, 80 and over ; Aspartic Acid ; analogs & derivatives ; analysis ; China ; ethnology ; Cognition Disorders ; metabolism ; therapy ; Creatine ; analysis ; Electroacupuncture ; Female ; Hippocampus ; chemistry ; Humans ; Magnetic Resonance Spectroscopy ; Male ; Middle Aged

OBJECTIVETo study the influence of clinical and pathological-morphological parameters on the prognosis of colorectal carcinoma.

METHODSUnivariate and multivariate Cox proportional hazard model were used to study the influence of clinical and pathological-morphological factors on the prognosis in 226 colorectal carcinoma cases.

RESULTSUsing univariate analysis, data showed that the factors significantly related to disease prognosis would include: the depth of direct spread, vessel invasion, perineural invasion, tumor budding, peritumoral-lymphocytic infiltration, Crohn-like reaction, number of positive lymph nodes, distant metastasis, TNM stage and urine glucose. Multivariate Cox proportional hazard model showed that six factors were identified to be associated with higher relative-risk (RR), including: older age, advanced TNM stage, more severe budding, perineural invasion, less peritumoral-lymphocytic infiltration and urine glucose.

CONCLUSIONAge, TNM stage, tumor budding, perineural invasive, peritumoral-lymphocytic infiltration and urine glucose were independent predictors to the prognosis of colorectal carcinoma.

Aged ; China ; epidemiology ; Colorectal Neoplasms ; diagnosis ; epidemiology ; pathology ; Female ; Glycosuria ; Humans ; Lymphatic Metastasis ; Male ; Middle Aged ; Neoplasm Invasiveness ; Neoplasm Staging ; Prognosis ; Proportional Hazards Models ; Regression Analysis ; Retrospective Studies ; Risk Factors

The bodies found in water are one of the most common types in forensic practice. The dis-covery site of the body is often not the drowning site. However, the determination of drowning site is vital for the identification of victim. Inorganic particles and planktons, such as granular impurities, diatoms and bacteria, are valuable markers for the diagnosis of drowning. By comparing the granular impurities and planktons in tissues and suspicious drowning mediums, the drowning site can be concluded based on their similarity of types and distribution, which has practical applied value. In this paper, the research progress on determination of drowning site is summarized to provide reference for the peers.

Amino Acid Sequence ; Base Sequence ; Genes, Bacterial ; Humans ; Molecular Sequence Data ; Polymerase Chain Reaction ; Staphylococcus epidermidis ; enzymology ; genetics ; beta-Lactamases ; chemistry ; genetics

OBJECTIVETo evaluate the effect of the diameter of abdominal aortic aneurysm (AAA) on endovascular exclusion (EVE) and its results.

METHODSFrom March 1997 to June 2007, 429 AAA patients were treated with endovascular stent-graft exclusion. According to the maximal diameter of abdominal aortic aneurysm, the patients were divided into two groups: group A (diameter < 55 mm, n = 274) and group B (diameter > or = 55 mm, n = 155). The diameter of AAA, involvement of iliac artery, length, diameter and distortion of aneurismal neck in the two groups were recorded and compared retrospectively.

RESULTSPatients in group B were significantly older than group A (73.7 vs 71.1 years, P < 0.05). More patients in group B was complicated with coronary artery disease than those in group A (P < 0.05). The mean diameter of AAA in group A was (46.6 +/- 6.8) mm, and (66.8 +/- 11.2) mm in group B (P < 0.05). Proximal aneurysmal necks were shorter, wider and more tortuous in group B than those in group A (P < 0.05). Extraperitoneal approach, embolism of inner iliac artery and reconstruction of another inner iliac artery and stretch technique were more applied in group B. There were more endoleak during operation in group B and more stent-grafts were used. There was significant difference in morbidity rate between the two groups, while no statistic difference in mortality. And in group B, there were a high rate of endoleak and secondary intervention post operation.

CONCLUSIONSThe diameter of AAA affects EVE and its results. In small aneurysms, EVE carries better outcome than in big aneurysms.

Aged ; Aged, 80 and over ; Aortic Aneurysm, Abdominal ; pathology ; surgery ; Blood Vessel Prosthesis Implantation ; methods ; Female ; Follow-Up Studies ; Humans ; Male ; Middle Aged ; Prognosis ; Retrospective Studies ; Stents ; Treatment Outcome

BACKGROUNDAnomalous origin of the left coronary artery from the pulmonary artery (ALCAPA) is a rare congenital heart anomaly. We aimed to illustrate the clinical features and long-term prognosis of patients with ALCAPA.

METHODSTwenty three patients (13 males and 10 females, ages ranging from 2.5 months to 65 years) identified as ALCAPA in Beijing Anzhen Hospital from April 1984 to June 2009 were divided into two groups, based on the age of onset: group 1 (≤ 12 months, n = 16) and group 2 (> 12 months, n = 7).

RESULTSFifty six point three percent of patients in group 1 had been misdiagnosed as endocardial fibroelastosis (9/16), 18.8% as dilated cardiomyopathy (3/16) and 6.3% as myocardial infarction (1/16). Patients in group 2 were usually diagnosed as coronary heart disease, myocarditis, or patent ductus arteriosus. Electrocardiography in group 1 revealed abnormal Q waves with T wave inversion in leads I, avL, V(4)-V(6), especially in lead avL (deep and wide Q wave); but no specific manifestations in group 2. A higher percentage of patients in group 1 had cardiomegaly on chest radiograph (86.7% vs. 33.3%, P = 0.031), while pulmonary artery protrusion was more common in group 2 (26.7% vs. 83.3%, P = 0.046). Lower left ventricular ejection fraction (LVEF) was present in group 1 than in group 2 ((48.5 ± 11.5)% vs. (65.0 ± 6.1)%, P < 0.001). Apical ventricular aneurysm (62.5% vs. 0%, P = 0.007), enhanced echogenicity of papillary muscles (87.5% vs. 28.6%, P = 0.011) and endocardial thickening (93.8% vs. 14.3%, P < 0.001) were more frequent in group 1 than in group 2. The ratio of the proximal right coronary artery (RCA) diameter to the aortic root diameter exceeded 0.14 in all cases, more prominent in group 2 (0.26 ± 0.05 vs. 0.33 ± 0.03, P = 0.009). Increased coronary artery collaterals within the interventricular septum were detected in 18 patients (78.3%) by Doppler imaging. Twenty one patients underwent cardiac surgery, including left coronary artery (LCA) ligation (1/21), LCA ligation plus coronary artery bypass grafting (1/21), Takeuchi operation (7/21), and LCA reimplantation surgery (12/21). Four patients underwent concomitant mitral valve repair and one received mitral valve replacement. Aneurysm resection was performed in 3 cases. Six patients died in hospital after surgery, and the rest of the cohort had no overt symptoms during a follow-up period of 6 to 166 months. Their abnormal Q waves gradually regressed or disappeared, and the LVEF and left ventricle size returned to normal range with alleviation of mitral insufficiency.

CONCLUSIONSThe accurate diagnosis of ALCAPA can be made with serial diagnostic methods. ALCAPA can be successfully treated with several types of cardiac surgery, and surgeries of establishing two-coronary-artery circulation are the preferred operations nowadays, with good long-term prognosis.

Adolescent ; Adult ; Aged ; Child ; Child, Preschool ; Coronary Vessel Anomalies ; diagnosis ; mortality ; Echocardiography ; Electrocardiography ; Female ; Follow-Up Studies ; Humans ; Infant ; Male ; Middle Aged ; Prognosis ; Pulmonary Artery ; abnormalities

Adolescent ; Age Factors ; Child, Preschool ; Exercise Test ; Female ; Heart Rate ; Humans ; Male ; Retrospective Studies ; Sex Characteristics