This study aimed to investigate viral infections and the prevalence of influenza-like illness (ILI) in Shijiazhuang, China, in 2011 and to provide a scientific basis for the diagnosis and control of respiratory tract infections. Throat swab specimens were collected from 483 cases of ILI who were outpatients in the influenza surveillance sentinel hospitals in Shijiazhuang between January and December 2011. All specimens were examined by multiplex RT-PCR for the following 15 respiratory tract viruses: adenovirus (ADV), human rhinovirus (HRV), human parainfluenza virus (PIV types 1-4), influenza virus A (FluA), influenza virus B (FluB), human enterovirus (HEV), respiratory syncytial virus (RSV-A and -B), human metapneumovirus (HMPV), human coronavirus (HCoV-229E/NL63 and -OC43/HKU1), and human bocavirus (HBoV). Among the 483 cases of ILI, 214 (44.31%) were positive for viruses, including ADV (8.7%), HEV (8.7%), RSV-A (8.07%), HRV (7.45%), FluA (5.38%), HCoV-OC43/ HKU1 (2.9%), PIV-3 (2.9%), HMPV (1.86%), PIV-1 (1.24%), HCoV-229E/NL63 (1.04%), PIV-2 (1.04%), HBoV (0.83%), and FluB (0.41%). Twenty-six (5.38%) of all cases were co-infected with two or more viruses, most commonly HEV/HRV with other viruses. Cases of viral infection were detected throughout the year, with peaks in January and February. ADV and HRV were detected throughout almost the whole year without obvious seasonality. HEV was detected between April and November, with a peak of prevalence in summer and autumn. FluA and FluB reached epidemic levels mainly in winter and spring. All cases of RSV were identified to be subtype A. PIV infection was mainly caused by PIV-3. The positive rate of HCoV-OC43/HKU1 infection was significantly higher than that of HCoV-229E/NL63. The leading five viruses that resulted in ILI Shijiazhuang in 2011 were HEV, ADV, RSV-A, HRV, and FluA, and these viruses have different epidemiological features.
Adolescent ; Adult ; Aged ; Child ; Child, Preschool ; China ; epidemiology ; Female ; Humans ; Infant ; Influenza, Human ; epidemiology ; virology ; Male ; Middle Aged ; Respiratory Tract Infections ; epidemiology ; virology ; Virus Diseases ; epidemiology ; virology ; Viruses ; classification ; genetics ; isolation & purification ; Young Adult

A novel targeting drug carrier (FA-BO-PAMAM) based on the PAMAM G5 dendrimer modified with borneol (BO) and folic acid (FA) molecules on the periphery and doxorubicin (DOX) loaded in the interior was designed and prepared to achieve the purposes of enhancing the blood-brain barrier (BBB) transportation and improving the drug accumulation in the glioma cells. 1H NMR was used to confirm the synthesis of FA-BO-PAMAM; its morphology and mean size were analyzed by dynamic light scattering (DLS) and transmission electron microscope (TEM). Based on the HBMEC and C6 cells, cytotoxicity assay, transport across the BBB, cellular uptake and anti-tumor activity in vitro were investigated to evaluate the properties of nanocarriers in vitro. The results showed that the nanocarrier of FA-BO-PAMAM was successfully synthesized, which was spherical in morphology with the average size of (22.28 ± 0.42) nm, and zeta potential of (7.6 ± 0.89) mV. Cytotoxicity and transport across the BBB assay showed that BO-modified conjugates decreased the cytotoxicity of PAMAM against both HBMEC and C6 cells and exhibited higher BBB transportation ability than BO-unmodified conjugates; moreover, modification with FA increased the total uptake of DOX by C6 cells and enhanced the cytotoxicity of DOX-polymer against C6 cells. Therefore, FA-BO-PAMAM is a promising nanodrug delivery system in employing PAMAM as a drug carrier and treatment for brain glioma.
Biological Transport ; Blood-Brain Barrier ; Bornanes ; chemistry ; Cell Line, Tumor ; Dendrimers ; Doxorubicin ; pharmacology ; Drug Carriers ; chemistry ; Drug Delivery Systems ; Folic Acid ; chemistry ; Glioma ; Humans

Pseudomonas sp. M18 is one of plant growth-promoting rhizobacteria capable of producing two kinds of anti-fungal agents: phenazine-1-carboxilic acid (PCA) and pyoluteorin (Plt). The pqsR gene, which encodes a LysR family member PqsR, was amplified from chromosomal genome of strain M18. Using the homologous recombination technique, a chromosomal pqsR inactivated mutant strain M18PRG was constructed in Pseudomonas sp. M18. To study the effect of pqsR gene on Plt biosynthesis, the dynamic curves of Plt production by strains M18 and M18PRG was measured in KMB media. As a result, Plt production of the pqsR mutant was three to four folds higher than that of its parent strain M18. The Plt production was restored to the wild-type level when strain M18PRG was complemented with pqsR gene in trans. The regulation of pqsR gene on Plt production was further confirmed by the pltA′-′lacZ translational fusion analysis. These results indicate that pqsR gene negatively controls the Plt biosynthesis. Additionally, by analyzing the growth curves of wild type strain M18 and pqsR mutant, wecan readily find that PqsR has a negative influence on cell growth. It was also shown that the production of red pigments in strain M18 required the expression of pqsR gene. In conclusion, the data presented in this study clearly demonstrate that PqsR acts as a global regulator involved in many physiological activities in Pseudomonas sp. M18.

OBJECTIVETo probe the implant-bone-interface stress distribution of zygomatic implant denture concerning different implant sites.

METHODSThree-dimensional finite element model for severe atrophy maxillary posterior-tooth area was established biomechanically in this study by computer technique and zygomatic implant was simulated into the model in the first-maxillary-premolar region, the second-maxillary-premolar region, the first-maxillary-molar region and the second-maxillary-molar region respectively. Vertical loading, buccal (30 degrees) loading and lingual (30 degrees) loading were preformed, 100 N. Then these load cases were calculated and analyzed.

RESULTS1) When the implant site was placed in the first-maxillary-premolar region, the buccal side of zygomatic implant exposed out of the bone and didn't meet the clinical request. 2) As far as the tensile stress peak value in the maxillary posterior-tooth area was concerned, the highest value was recorded when the implant was placed in the second-maxillary-molar region, and then the medium value was recorded when the implant was placed in the second-maxillary-premolar region, and the smallest was recorded when the implant in the first-maxillary-molar region. As far as the compressive stress peak value in the maxillary posterior-tooth area was concerned, the highest value was recorded when the implant was placed in the second-maxillary-molar region, and then the medium was recorded when the implant was in the first-maxillary-molar region, and the smallest value was presented when the implant was in the second-maxillary-premolar region. As far as the tensile and compressive stress peak values in the zygomatic area were concerned, the highest value was recorded when the implant was in the second-maxillary-premolar region, and then the medium value when the implant was in the first-maxillary-molar region, and the smallest when the implant was in the second-maxillary-molar region.

CONCLUSIONThe first-maxillary-molar region is the best implant site of zygomatic implant denture.

Bicuspid ; Dental Implants ; Dental Prosthesis, Implant-Supported ; Dentures ; Finite Element Analysis ; Humans ; Maxilla ; Molar ; Stress, Mechanical

Objective To propose a new blood purification modality-hemodialysis with plasma- based dialysate (HD-PBD) plus high volume hemofiltration (HVHF) for patients with liver failure, and to evaluate the effect of this treatment on plasma cytokines.Methods Twelve patients with liver failure were included in this study.All patients received HD-PBD therapy in the first 6 hours,and then were treated with HVHF for 24 hours with the same filter (AV600).The levels of TNF-?,IL-1?, IL-6 and IL-8 in plasma before and after HD-PBD plus HVHF for 6 and 24 hours were examined respectively by ELISA,and changes of clinical parameters were observed at the same time point. Serum bilirubin,total bile acids (TBA),serum ammonia,blood urea nitrogen (BUN) and serum creatinine (Scr) were detected before and after treatment.Arterial blood gas analysis and the concentration of electrolytes were monitored before and after treatment.Results (1)HD-PBD for 6 hours was more effective than HVHF for 24 hours in removal of serum bilirubin and TBA(P＜0.05). (2)Serum ammonia,BUN,Ser,arterial blood HCO_3~-,PCO_2,PO_2 and electrolytes did not show significant difference before and after HD-PBD (P＞0.05),but these parameters significantly changed before and after HVHF (P＜0.05).(3)The average level of serum bilirubin was sharply decreased after HVHF for 24 h following HD-PBD(P＜0.05).(4)After HD-PBD plus HVHF,there was a marked reduction of the plasma levels of TNF-?,IL-6 and IL-8.Conclusions HD-PBD plus HVHF,a newly proposed modality for patients with liver failure,can effectively decrease serum bilirubin,TBA,BUN,Scr,ammonia and cytokines,and adjust water-electrolyte as well as acid- alkali balance.It is a low-cost,safe,simple and convenient therapy.

Objective To explore the biological functions of retinoic acid-inducible gene-I(RIG-I) in vivo through phenotype analysis of RIG-I knockout mice. Methods The gene expression of RIG-Ⅰ in various tissues of mice was examined with Northern blotting and semi-quantitative RT-PCR.The phenotypes observed included body weight measurement,differential count of peripheral blood cells,metabolic parameters measurement and histopathologic examination. ResultsRIG-Ⅰ expressed in various tissues of mice with different levels.No gross developmental abnormalities and expected maturation arrest in granulocytic differentiation were observed in RIG-Ⅰ knockout mice.However,RIG-Ⅰ knockout mice exhibited an unexpected increase in the ratios of neutrophiles to lymphocytes in peripheral blood and increased susceptibility to bacteria infection. Conclusion RIG-Ⅰ may play an important role in immune regulation in mice.

OBJECTIVEDiscuss the functional mechanism of treating male infertility with Bushen Shengjing pill (BS).

METHODFill the SD rat with adenine so as to injure the germ cell which will produce the model rat with kidney yang deficiency. Measure the activity of SOD and NOS, the amount of NO and MDA in the testicle.

RESULTBS can promote the activity of SOD, reduce the activity of NOS and the amount of NO and MDA.

CONCLUSIONBS has the function of protecting the germ cell which is closely related to the function that the pill can promote the activity of SOD, reduce the activity of NOS and the amount of NO and MDA.

Adenine ; Animals ; Drug Combinations ; Drugs, Chinese Herbal ; isolation & purification ; pharmacology ; Fertility Agents, Male ; pharmacology ; Kidney Diseases ; chemically induced ; metabolism ; Male ; Malondialdehyde ; metabolism ; Nitric Oxide ; metabolism ; Nitric Oxide Synthase ; metabolism ; Plants, Medicinal ; chemistry ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Spermatogenesis ; drug effects ; Superoxide Dismutase ; metabolism ; Testis ; metabolism ; Yang Deficiency ; chemically induced ; metabolism

OBJECTIVESTo determine the expression of nitric oxide synthase (NOS) in testis and to investigate the effects of NO on the reproductive function of testis.

METHODSTestes of adult male Sprague-Dawley rats were fixed in 4% paraformaldehyde. The paraffin sections were made as routine. Immunohistochemical ABC method was used to observe the localization of NOS.

RESULTSEndothelia NOS (eNOS), neuronal NOS (nNOS) and inductive NOS (iNOS) were all expressed in Leydig cells. Only eNOS was expressed in peritubular myoid cells, endothelial and smooth muscle cells of blood vessel, while only nNOS expressed in tunica adventitia of testicular blood vessels. The reactive substance distributes in cytoplasm with negative nuclei. Immunoreactivity for eNOS, nNOS and iNOS in all spermatogenic cells was negative.

CONCLUSIONSThree kinds of NOS were all expressed in testis and the distribution of different NOS had a little difference.

Animals ; Immunohistochemistry ; Male ; Nitric Oxide ; biosynthesis ; Nitric Oxide Synthase ; analysis ; Rats ; Rats, Sprague-Dawley ; Testis ; enzymology

OBJECTIVEAs a new technique of biomedical imaging, the optical in vivo imaging has been used in many research fields of biological processes, such as analyzing gene expression pattern, observing action of drug target. For extending its application field, this technique is initially used to investigate the effect of acupuncture in this study.

METHODSSeven SPF mice were randomly divided into an acupuncture group (4 cases) and a control group (3 cases). Fluorescent labeling Cy7 (Tf-Cy7) and Doxorubicin (Dox) were injected into the caudal vein of the nude mice, respectively. With the.stabilized distribution of Tf-Cy7 and Dox in vivo, "Yaoyangguan" (GV 3) point was acupunctured in the acupuncture group. The animals in the control group were not acupunctured. Then, the fluorescent irradiance of Tf-Cy7 and Dox was displayed by the optical in vivo imaging, the effect of acupuncture was analyzed.

RESULTS(1) After acupuncture, the fluorescent intensity of Tf-Cy7 started to decrease in the blood-brain barrier and heart, but tended to increase in the liver and spleen, in which the highest intensity of Tf-Cy7 was demonstrated at 50 min during the acupuncture. It was obviously different from that of the control group. (2) The fluorescent intensity of Dox tended to increase in the brain and lung after 20 min of acupuncture, and reached the highest concentration at 30 min.

CONCLUSIONAcupuncture can influence the action of Tf-Cy7 targeting and distribution of Dox, which is clearly showed with the optical in vivo imaging. Thus, this technique provides a new approach for the acupuncture and meridian research.

Acupuncture ; Animals ; Blood-Brain Barrier ; physiology ; Female ; Heart ; physiology ; Liver ; physiology ; Male ; Mice ; Mice, Nude ; Molecular Imaging ; methods ; Pilot Projects ; Random Allocation ; Research Design ; Specific Pathogen-Free Organisms

OBJECTIVETo explore the mechanism of occupational medicamentosa-like dermatitis (OMDT) induced by trichloroethylene (TCE) and some immunity indexes in workers occupationally exposed to TCE.

METHODSThe blood samples from 8 cases with medicamentosa-like dermatitis in 1st, 2nd, 3rd, 4th and 5th weeks after admitting to hospital were examined for liver function, immunoglobulin and some complement indexes. Thirty nine workers occupationally exposed to TCE were investigated for urinary TCE and some immuno-complement indexes. The TCE concentrations of air in workplaces were monitored.

RESULTSC3d-CIC and C3 of patients before admission were (92.86 ± 44.80) mg/L and 0.91 ± 0.19 mg/L, respectively. C3d-CIC and C3 of patients before discharge were (52.41 ± 17.75) mg/L and (1.14 ± 0.22) mg/L, respectively. There were significant differences between admission and discharge (P < 0.05). The average TCE concentration in 4 workplaces was (351.96 ± 36.72) mg/m(3), which was higher than the occupational exposure limits (OELs). The number of workers exposed to the TCE concentration-time weighted and TCA in urine over OELs were 28.21% and 56.41% of total subjects, respectively. The serum IgG and CIC levels of patients before discharge were (10.03 ± 1.21) mg/L and 103.50 ± 29.17 mU/L, which were significantly lower than those (17.21 ± 1.85) mg/L and (227.46 ± 111.67) mU/L of patients before admission (P < 0.01).

CONCLUSIONThe type II and III hypersensitivity may be associated with OMDT and the organ injure induced by TCE.

Adolescent ; Adult ; Complement System Proteins ; immunology ; Dermatitis, Occupational ; immunology ; Female ; Humans ; Male ; Occupational Exposure ; Trichloroethylene ; toxicity ; Young Adult