In this study, five rhesus macaques were inoculated intravenously with SIVmac251 to establish a model of simian autoimmune deficiency syndrome (SAIDS). Peripheral blood samples were collected at different time points to monitor changes in the total T cell number and T lymphocyte subset. Plasma viral loads, cytokine expression levels and anti-SIV antibody levels were also assayed to acquire certain basic indexes to evaluate disease progression in the rhesus macaque SAIDS model. During the acute stage of infection, plasma viral loads reached a peak at week 1 post-inoculation and lasted for approximately 3 to 44 weeks. The CD3+ CD4+ T lymphocyte count in peripheral blood also transitorily decreased. During the same period, the level of interferon-gamma show an increasing trend, whereas IL-12 levels decreased; IL-2, IL-4, IL-10 and TNF-alpha were maintained at normal levels or could not be detected. During the asymptomatic and ARC phases, plasma viral loads persisted above 10(4) RNA copies/mL and either increased or declined during the later stages of disease; CD3+ CD4+ counts showed a steadily declining trend and the ratio of CD4 to CD8 decreased during late-stage disease. Moreover, antibodies against viral proteins were detected in the plasma and showed a significant increasing trend, while there were no apparently changes in the levels of IFN-gamma, IL-12, IL-2, IL-4, IL-10 and TNF-alpha. In conclusion, the characteristics of the SIV animal models in our study are similar to those of patients with AIDS. Therefore, the rhesus macaque SIVmac251 infection models can be applied for further studies into AIDS.
Animals ; Antibodies, Viral ; blood ; CD4 Lymphocyte Count ; CD4-Positive T-Lymphocytes ; virology ; Cytokines ; genetics ; immunology ; Disease Models, Animal ; HIV Infections ; genetics ; immunology ; virology ; HIV-1 ; physiology ; Humans ; Macaca mulatta ; Male ; Simian Acquired Immunodeficiency Syndrome ; genetics ; immunology ; virology ; Simian Immunodeficiency Virus ; physiology ; Viral Load

In this study, the human umbilical vein endothelial cell model was used to study the regulating effect of lipophilic components in Salvia miltiorrhiza on angiogenesis, and explore its possible mechanism. The cell model was established to determine the effect of lipophilic components in S. miltiorrhiza on the proliferative activity and migration capacity of endothelial cells. Then the realtime fluorescence quantification PCR technology was applied to detect the changes in the gene expressions of angiogenesis-related cytokines VEGF-A, VEGF-C and MMP-9. The results showed that 5 mg x L(-1) lipophilic components in S. miltiorrhiza could inhibit the proliferation and migration of endothelial cells, and reduce the expression of VEGF-A and MMP-9 genes. It indicated that lipophilic components in S. miltiorrhiza may inhibit the proliferation and migration of endothelial cells by inhibiting the expression of VEGF-A and MMP-9 genes, so as to show the inhibitory effect on angiogenesis.
Angiogenesis Inhibitors ; chemistry ; pharmacology ; Cell Movement ; drug effects ; Cell Proliferation ; drug effects ; Drugs, Chinese Herbal ; chemistry ; pharmacology ; Human Umbilical Vein Endothelial Cells ; cytology ; drug effects ; metabolism ; Humans ; Matrix Metalloproteinase 9 ; genetics ; metabolism ; Salvia miltiorrhiza ; chemistry ; Vascular Endothelial Growth Factor A ; genetics ; metabolism

OBJECTIVETo investigate the effect of adenosine A2A receptor knockout (A(2A)RKO) on relationship between continuous activation of phospho-c-Jun N-terminal kinase (P-JNK) and expression of nerve cell apoptosis in hippocampus CA1 domain of newborn mice after hypoxia/ischemia brain damage(HIBD) and its potential mechanism.

METHODSA(2A)RKO mice and adenosine A2A receptor wildtype (A(2A)RWT) littermates (n = 80) were divided into Sham operation group (S) and model group (M), 1, 3 and 7 day after HIBD, totally 8 groups. HIBD was developed with 7 day-old neonatal mice according classical Rice-Vannucci method. It was tested the effect of A(2A)RKO on short-term neurofunctional outcomes consisted of three developmental reflexes (righting, geotaxis and cliff aversion), the changes of brain pathology with hematoxylin-eosin (HE) staining and Nissl staining, the expressions of nerve cell apoptosis with terminal deoxynucleotidyl transferase mediated dUTP-biotin nick-end labeling(TUNEL) staining and P-JNK were observed by immunohistochemistry.

RESULTSThe neurological behavior injuries and brain histopathological damages and nerve apoptosis cells were aggravated in A(2A)RKO newborn mice after HIBD. The positive expressions of P-JNK were significantly higher in the ischemic hippocampus CA1 domain after HIBD than ones in group S respectively (P < 0.01), reaching to peak at 1 day and then began gradually decreasing. P-JNK expression in model knockout(MKO) at 1, 3 and 7 day increased greatly compared to those in the previous time point of corresponding model wildtype (MWT) (P < 0.01, P < 0.05, P > 0.05); there was a positive correlation between the expressions of P-JNK and nerve cell apoptosis after HIBD in newborn mice(r = 0.837, P < 0.01).

CONCLUSIONEarly continuous activation of P-JNK might be involved in the aggravated nerve apoptosis cells and brain damage induced by A(2A) RKO newborn mice after HIBD.

Animals ; Animals, Newborn ; Apoptosis ; Hypoxia-Ischemia, Brain ; metabolism ; pathology ; JNK Mitogen-Activated Protein Kinases ; metabolism ; Mice ; Mice, Knockout ; Neurons ; drug effects ; metabolism ; pathology ; Receptor, Adenosine A2A ; genetics

A new phenolic amide glycoside, cimicifugamide A (1) along with four known compounds, trans-feruloyl tyramine 4-O-beta-D-glucopyranoside (2), (+)-isolariciresinol 3-O-beta-D-glucopyranoside (3), cimidahurine (4), and 24-epi-7, 8-didehydrocimigenol-3-O-beta-D-xylopyranoside (5) were isolated from the rhizomes of Cimicifuga dahurica. Compound 3 was identified as a lignan and has been obtained from Cimicifuga genus for the first time. The structure of compound 1 was elucidated by IR, UV, HR-MS and NMR spectroscopic methods.
Amides ; chemistry ; isolation & purification ; Cimicifuga ; chemistry ; Glycosides ; chemistry ; isolation & purification ; Lignans ; chemistry ; isolation & purification ; Molecular Structure ; Phenols ; chemistry ; isolation & purification ; Plants, Medicinal ; chemistry ; Rhizome ; chemistry

OBJECTIVETo investigate the analgesic effect of interleukin-2 (IL-2) in mice with spared nerve injury (SNI).

METHODIL-2 was intraperitoneally injected in mice with induced SNI, and von Frey Filaments test and cold plate test were carried out to accesses the analgesic effects of IL-2 and the effect of naloxone in antagonizing the effects of IL-2.

RESULTSIL-2 produced analgesic effects against hyperalgesia and allodynia in mouse models of SNI, and the effect of IL-2 lasted for more than 24 h, showing a double-peak pattern in its action with the two peaks occurring at 30 and 105 min, respectively. The effect of IL-2 could be significantly antagonized by naloxone.

CONCLUSIONSIL-2 has long-lasting analgesic effects in mouse models of SNI model, showing a double-peak pattern of its action. The analgesic effect of IL-2 is probably mediated by opiate receptor.

Analgesics ; administration & dosage ; antagonists & inhibitors ; pharmacology ; therapeutic use ; Animals ; Disease Models, Animal ; Dose-Response Relationship, Drug ; Humans ; Hyperalgesia ; complications ; drug therapy ; Interleukin-2 ; administration & dosage ; antagonists & inhibitors ; pharmacology ; therapeutic use ; Male ; Mice ; Mice, Inbred BALB C ; Naloxone ; pharmacology ; Trauma, Nervous System ; complications ; drug therapy

OBJECTIVETo develop and investigate GLL-37, a substitution analogue of the human antimicrobial peptide LL-37 with anti-enzymatic degradation activity and improved efficacy.

METHODSThe bactericidal activities of LL-37 and newly developed GLL-37 against 6 Gram-negative and -positive bacteria were determined by Broth microdilution assays. The minimum inhibitory concentrations of LL-37 and GLL-37 against E.coli ATCC 25922 in different NaCl concentration medium were also detected. Both peptides were co-incubated with elastase, and then analyzed by PAGE electrophoresis and bactericidal activity determination.

RESULTGLL-37 showed a stronger elastase resistance ability than LL-37, and was significantly more effective than LL-37 under high-salt condition.

CONCLUSIONThe antimicrobial peptide GLL-37 derived form LL-37 has the potential as a new therapeutic agent for bacterial infections.

Animals ; Anti-Bacterial Agents ; pharmacology ; therapeutic use ; Antimicrobial Cationic Peptides ; pharmacology ; therapeutic use ; Blood Bactericidal Activity ; drug effects ; Cathelicidins ; Cell Membrane Permeability ; drug effects ; Escherichia coli ; drug effects ; Female ; Humans ; Membrane Proteins ; metabolism ; Monocytes ; drug effects ; Pseudomonas Infections ; drug therapy

Rhesus monkeys with high specific H5N1 antibody were inoculated the second time with H5N1 virus, the result of the second time H5N1 inoculation and the effect of first time H5N1 inoculation on second inoculation was evaluated. Monkeys of NO. 3, NO. 4, NO. 5 were inoculated with H5N1 allantoic fluid and NO. 6 with noninfectious allantoic fluid by intratracheal thyrocricoid puncture. Three months later, NO. 4, NO. 5, NO. 6 monkeys were infected with 7 ml TCID50 10(4.875) H5N1 allantoic fluid and NO. 3 monkey with 7 ml noninfectious allantoic fluid at the same time by the same method. Clinical symptoms were recorded and antibody response was detected by ELISA. NO. 3, NO. 4, NO. 6 monkeys were killed after 72 h post infection and NO. 5 monkey was killed after 7 days post infection. Pathologic changes of the infected monkeys' lung were examined by HE staining,immunohistochemistry and the virus in lung was detected by RT-PCR. Results showed that NO. 3, NO. 4, NO. 5 monkeys still retained high level of specific antibody, H5N1 virus only could be detected in NO. 6 monkey's lung by immunohistochemistry and RT-PCR ,and the lung of NO. 6 monkey injured worst . It can be concluded that Rhesus monkeys inoculated with H5N1 avian influenza A virus at the first time could retain a high level of specific antibody in 90 days and the clinical symptom had almost recovered, the ability of Rhesus monkeys to resist second infection of H5N1 virus was enhanced notably at that moment.
Animals ; Antibodies, Viral ; blood ; immunology ; Enzyme-Linked Immunosorbent Assay ; Immunohistochemistry ; Influenza A Virus, H5N1 Subtype ; genetics ; immunology ; pathogenicity ; Macaca mulatta ; Monkey Diseases ; immunology ; pathology ; virology ; Orthomyxoviridae Infections ; blood ; immunology ; pathology ; Reverse Transcriptase Polymerase Chain Reaction

OBJECTIVETo investigate the method and result of arthroscopic trans-septal approach (ATS).

METHODSTen fresh cadaveric knees were prepared for anatomical study about the posterior septum, and 65 posterior compartment arthroscopy of the knees were performed to view the structure of the posterior septum. The initial diagnosis included: rheumatoid arthritis, pigmented villonodular synovitis, osteoarthritis, loose body or foreign body in the posterior compartment, posterior cruciate ligament (PCL) injury or avulsion fracture, posterior horn tear of meniscus, undiagnosed swollen knee with pain and effusion, osteochondritis dissecans, pyogenic arthritis, gout. From January 2002 to June 2005, 22 cases of ATS were applied. Anterolateral portal was initially created, followed by posterolateral portal under the viewing of arthroscopy which was located at the anterolateral portal. Anteromedial and posteromedial portals were also created using the same technique. Arthroscopy was then transferred to the posteromedial portal, and blade was introduced from the anteromedial portal to gradually remove the synovium covering PCL. Arthroscopy was relocated to the anteromedial portal, Wissinger rod was introduced from the posteromedial portal and pointed to the posterior septum adjacent to the posterior edge of the midportion of PCL. The Wissinger rod was pushed carefully to pierce through the posterior septum under the sight of arthroscopy which was located at the posterolateral portal. ATS was finally created.

RESULTSThe posterior septum was in the middle of posterior compartment of the knee, which was film screen-like at the sagittal plane and sandwich-like at the transverse plane. The synovium covered the posterior septum at arthroscopic inspection. Twenty-two cases of ATS were successfully created, amounting to 34% (22/65) of all cases at the same period which had received the arthroscopy of posterior compartments of the knees. Synovectomy of the posterior compartments of the knees was performed in 7 cases, loose body removal was in 6 cases, PCL reconstruction was in 4 cases, reduction and fixation of PCL avulsion fracture was in 2 cases. Chondroplasty, inflammatory synovectomy, and meniscectomy were performed accordingly in 6 osteoarthritis cases. No vascular or nervous injury was encountered. At an average of 20 months follow-up (range, 4 to 45 months), 9 cases still had mild knee pain or swelling, 2 cases had severe pain and were recommended for total knee replacement, the other 11 cases had no recurrence of knee pain or swelling.

CONCLUSIONSATS has no blind area under arthroscopic vision and facilitate trans-septal operation. It is a safe and effective method to treat the diseases of the posterior compartment of the knee. The direction of inside to outside to create ATS is comparatively reliable, and PCL could be identified as an interior landmark during the passage of Wissinger rod through posterior septum to create ATS.

Adult ; Arthroscopy ; methods ; Female ; Follow-Up Studies ; Humans ; Joint Diseases ; surgery ; Knee Injuries ; surgery ; Knee Joint ; pathology ; surgery ; Male ; Middle Aged ; Posterior Cruciate Ligament ; pathology ; Reproducibility of Results ; Treatment Outcome

OBJECTIVETo explore and develop three-dimension (3D) virtual reality (VR) liver model and convert computed tomography data into a fully 3D VR environment for display, measure and manipulation.

METHODS3D-reconstruction of liver was restored from spiral computed tomography (CT) data by using LiVirtue software. Dextrobeam was used to view the 3D model in the VR environment. The liver and its anatomic structure were reconstructed to illuminate the location of the tumor and its related vessels.

RESULTS3D models of liver, tumor and their relative vessels were reconstructed successfully. These models could be viewed and manipulated in the VR environment on personal computer.38 patients underwent liver resection, including 21 right hemihepatectomy, 14 left hemihepatectomy and 3 extended right hemihepatectomy. The intraoperative contrast with preoperative simulation confirmed the reliability of our 3D operative planning system.

CONCLUSIONSThe preoperative simulation in 3D VR facilitated liver resection by the ability to view tumor and its relative vessels. This preoperative estimation from 3D model of liver benefits a lot to complicated liver resection.

Computer Simulation ; Hepatectomy ; Humans ; Imaging, Three-Dimensional ; Liver Neoplasms ; surgery ; Software ; User-Computer Interface

OBJECTIVETo study the tissue culture and rapid-proliferation techniques of Pueraria mirifica.

METHODThe tender branch were used as explants and cultivated in different media. The optimum media for inducing buds, proliferation and rooting were selected by adjusting the kinds and doses of plant hormones and special compounds.

RESULTThe medium of MS + IBA 0.05 mg L(-1) + BA 0.5 mg L(-1) was suitable for buds inducing and could be used in the first generation cultivation; MS + IBA 0. 02 mg L(-1) + BA 0.2 mg L(-1) and MS +BA 0.1 mg L(-1) were employed by turns in subculture, 25 days propagation coefficient was 3.0; and the medium of 1/2MS + IBA 0.1 mg L(-1) + IAA 0.2 mg L(-1) + C (special compound) 10 mg L(-1) was used for roots inducing, the rooting rate was 76.9%. Rooting plantlets were transplanted in spring and summer; the surviving rate was 81.0%.

CONCLUSIONThis technique system could be employed for rapid propagation of P. mirifica.

Pueraria ; growth & development ; Tissue Culture Techniques ; methods