Acupuncture Therapy ; Adolescent ; Adult ; Aged ; Bloodletting ; Combined Modality Therapy ; Facial Paralysis ; therapy ; Female ; Humans ; Male ; Middle Aged ; Mouth Mucosa ; blood supply ; Young Adult

ObjectiveTo observe the projections from respiratory neurons of medulla oblongata to the motor neuron pool of phrenic nerve in rat. MethodsBy using horseradish peroxidase (HRP) retrograde tracing technique after injecting HRP into phrenic nerve, retrograde labelled neurons were found in C3-C5 segment. Then, HRP was injected into the area where the phrenic motor neurons occupied, retrograde labelled neurons were found in medulla oblongata. ResultsPhrenic motor neurons locate in the C3-C5 segment ipsilaterally, occuping the intermediate portion of anterior horn and appearing typical motor neurons. Retrograde labelled neurons were found bilaterally in medulla oblongata, the neurons were located in nucleus retroambigualis (RNA), ventramedial area to nucleus retrofacialis (NRF). ConclusionThe phrenic motor neurons may receive direct projection of respiratory neuron in medulla oblongata, the projecting neurons are distributed in RNA and NRF area.

Adult ; Carotid Artery, External ; anatomy & histology ; Humans ; Hypoglossal Nerve ; anatomy & histology ; Tongue ; anatomy & histology ; blood supply ; innervation

Calycosin, which is a kind of typical phytoestrogen, can bind with estrogen receptor and produce estrogen-like effects. Calycosin were reported to have antioxidant, anti-osteoporosis, anti-tumor and immunomodulating activities. This review covers biological activities and its mechanism of calycosin. It will provide a useful reference for clinical research and rational utilization of monomericompound.
Animals ; Apoptosis ; drug effects ; Astragalus Plant ; chemistry ; Cell Proliferation ; drug effects ; Drugs, Chinese Herbal ; pharmacology ; Humans ; Isoflavones ; pharmacology ; Phytoestrogens ; pharmacology

OBJECTIVETo investigate the effect of air pollution on stroke mortality in Tianjin, China, and to provide basis for stroke control and prevention.

METHODSTotal data of mortality surveillance were collected by Tianjin Centers for Disease Control and Prevention. Meteorological data and atmospheric pollution data were from Tianjin Meteorological Bureau and Tianjin Environmental Monitoring Center, respectively. Generalized additive Poisson regression model was used in time-series analysis on the relationship between air pollution and stroke mortality in Tianjin. Single-pollutant analysis and multi-pollutant analysis were performed after adjustment for confounding factors such as meteorological factors, long-term trend of death, "days of the week" effect and population.

RESULTSThe crude death rates of stroke in Tianjin were from 136.67 in 2001 to 160.01/100000 in 2009, with an escalating trend (P = 0.000), while the standardized mortality ratios of stroke in Tianjin were from 138.36 to 99.14/100000, with a declining trend (P = 0.000). An increase of 10 µg/m³ in daily average concentrations of atmospheric SO₂, NO₂ and PM₁₀ led to 1.0105 (95%CI: 1.0060 ∼ 1.0153), 1.0197 (95%CI: 1.0149 ∼ 1.0246) and 1.0064 (95%CI: 1.0052 ∼ 1.0077), respectively, in relative risks of stroke mortality. SO₂ effect peaked after 1-day exposure, while NO₂ and PM₁₀ effects did within 1 day.

CONCLUSIONAir pollution in Tianjin may increase the risk of stroke mortality in the population and induce acute onset of stroke. It is necessary to carry out air pollution control and allocate health resources rationally to reduce the hazard of stroke mortality.

Air Pollutants ; analysis ; Air Pollution ; analysis ; China ; epidemiology ; Environmental Monitoring ; Humans ; Models, Theoretical ; Particulate Matter ; analysis ; Poisson Distribution ; Stroke ; epidemiology ; mortality ; Survival Rate ; Time Factors

Antigens, CD ; blood ; Antigens, Neoplasm ; blood ; Bone Marrow ; immunology ; Child ; Child, Preschool ; Female ; Flow Cytometry ; methods ; Humans ; Male ; Myeloid Cells ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; immunology ; mortality ; Survival Rate

Objective To examine the composition and distribution of animal reservoir of plague in Quanzhou city, Fujian province, and so as to accumulate basic data for making the plague prevention and control measures. Methods Rodents were captured by cages in six monitoring spots of Quanzhou city between 2000 and 2009. Then rodents and flea species were identified. Rats liver and spleen homogenates were detected of plague F1 antigen by reverse indirect hemagglutination test (RIHA); rats serum were detected of plague F1 antibody by indirect hemagglutination test (IHA). ResultsA total of 26 264 rodents were captured between 2000 and 2009.Rattus norvegicus and Rattus flavipectus were dominant species, which were accounted for 45.97％ (12 074/26 264)and 32.01％(8407/26 264), respectively. The account of Rattus flavipectus captured between 2005 and 2009 was (26.99 ± 2.46)％ and (37.03 ± 3.79)％ between 2000 and 2004. The difference was statistically significant (t =4.97, P ＜ 0.05). Total rodent densities was (6.86 ± 1.44)％, including(5.36 ± 1.83)％ in mountains and (6.81 ±1.66)％ in coastal areas, respectively, and the difference was not statistically significant(t =1.01, P ＞ 0.05). Total flea index and flea infection rate of rodents were 1.39 ± 0.34 and (35.90 ± 5.34)％, respectively. Xenopsylla Cheopis index was 1.20 and free flea index was 0.009. Flea infection rate was (32.36 ± 0.96)％ between 2005 and 2009, which was lower than (39.44 ± 0.39)％ between 2000 and 2004(t =2.76, P ＜ 0.05). ConclusionsThe major rodent species found in Quanzhou city is Rattus norvegicus. Xenopsylla Cheopis is the dominant flea species.Spreading of plague among Rattus is not found.

Inoculant the examine-needed germ on a flat panel of synthetic medium, and placed paper slices, which had being saturated by different kinds of sugar, on the medium to carry out the experiment of microorganic auxanography. Its result was compared with that of the traditional method, the sugar-grain method. The comparison showed that the former was better than the latter for its more definite result and more convenient operation.

OBJECTIVETo explore the therapeutic effect of the modified maxillary bone disassembly procedures on patients with tumors in the anterior and middle skull base.

METHODSRetrospective analysis was made of patients treated with the modified maxillary bone disassembly procedures. Ten tumors in the anterior and middle skull base were resected according to the pathology, size and site of the skull base tumors including 9 benign tumors and 1 malignant tumor.

RESULTSAll tumors were resected completely. All patients were followed up from 12 months to 5 years postoperatively. The complications were less and the life quality was increased. The patients with benign tumors showed no recurrence . Two patients with cerebrospinal rhinorrhea cured spontaneously after 7 days. One patient with melanoma died of brain metastase.

CONCLUSIONSIt is necessary to estimate the tumors thoroughly before surgery. According to the location of the tumor, the modified maxillary bone disassembly is the nearest and harmless approach, through which the tumors can be completely excised with minimal invasiveness. The life quality is thus increased.

Adolescent ; Adult ; Female ; Humans ; Male ; Maxilla ; surgery ; Middle Aged ; Retrospective Studies ; Skull Base Neoplasms ; surgery ; Surgery, Oral ; methods ; Treatment Outcome ; Young Adult

OBJECTIVETo study the concentration of stresses at the cervix with simulating restoration of tooth defects.

METHODSA two-dimensional finite element model of a mandible first premolar with defect from longitudinal section was developed. The model was simulatedly restored, respectively by composite resin and glass ionomer cement, and then investigated stress variation in the cervical area.

RESULTSIn the restored models, both of materials improved the concentration of stresses at the cervical area. The composite resin and the glass ionomer cement restorations made the maximum principal stresses declined respectively to 36.2 MPa and 42.5 MPa, which were close to the value of normal tooth in the deepest area of defects.

CONCLUSIONThe concentration of stresses are improved in the cervical area with teeth defects restored.

Composite Resins ; Dental Restoration, Permanent ; Finite Element Analysis ; Glass Ionomer Cements ; Humans ; Tooth Abrasion ; physiopathology ; therapy