The combination of Danggui and Honghua (GH) is a popular herb pair commonly used in clinic for the treatment of blood stasis syndrome in China. To evaluate the activating blood circulation and dissipating blood stasis effects of the combination of different proportions of Danggui and Honghua on acute blood stasis rats, and optimize the proportion of GH to have the best activating blood circulation and dissipating blood stasis effect. Acute blood stasis rat model was induced by subcutaneous injection of adrenaline and ice water bath. The blood stasis rats were administrated intragastrically with GH (1 : 0, 4 : 1, 2 : 1, 3 : 2, 1 : 1, 2 : 3, 1: 2, 1 : 4 and 0 : 1) extracts. The whole blood viscosity (WBV), plasma viscosity (PV), and high shear whole blood relative index (HSWBRI), low shear whole blood relative index (LSWBRI), and erythrocyte aggregation index (EAI) were tested to observe the effects of GH on hemorheology of blood stasis rats. And the maximum aggregation induced by adenosine diphosphate (ADP) was tested to observe the effect of GH on platelet aggregation index of blood stasis rats. In addition, the prothrombin time (PT), thrombin time (TT), activated partial thromboplastin time (APTT) and plasma fibrinogen (FIB) were tested to observe the effects of GH on blood coagulation function of blood stasis rats. Then principal component analysis and multi-attribute comprehensive index methods were both used to comprehensively evaluate the total activating blood circulation and dissipating blood stasis effects of GH. The results showed that the hemorheological indexes and coagulation parameters of model group both had significant differences with normal group. Compared with model group, GH (1 : 0, 4 : 1, 2: 1, 3 : 2, 1 : 1, 2 : 3, 1 : 2, 1 : 4 and 0 : 1) could improve all the blood hemorheology indexes and regulate part indexes of blood coagulation function and platelet aggregation in acute blood stasis rats. Based on principal component analysis and multi-attribute comprehensive index methods, GH 1 : 1 and GH 3 : 2 both had the best effect of blood circulation and dissipating blood stasis, and the effect of GH 1 : 1 was slightly better than GH 3 : 2. These results suggest that GH could obviously ameliorate the abnormality of hemorheology and blood coagulation function in acute blood stasis rats. The optimized proportion of GH was consistent with regulations of medicine usage that GH 1 : 1 had the highest frequency used in traditional Chinese formulae. It could provide scientific basis for more effective application of the compatibility between Danggui and Honghua in modern clinic medicine.
Animals ; Blood Coagulation ; Blood Viscosity ; Carthamus tinctorius ; China ; Drugs, Chinese Herbal ; pharmacology ; Erythrocyte Aggregation ; Hemorheology ; Partial Thromboplastin Time ; Platelet Aggregation ; Principal Component Analysis ; Prothrombin Time ; Rats ; Rats, Sprague-Dawley ; Thrombin Time

Salviae Miltiorrhizae Radix et Rhizoma-Carthami Flos is a famous Chinese medicine pair (CMP). Salviae Miltiorrhizae Radix et Rhizoma can promote blood circulation for removing blood stasis, and Carthami Flos can promote blood circulation for removing meridian obstruction and remove blood stasis for relieving pain. The two herbs are important TCMs for activating blood. Danhong injection is the classic application of the two herbs compatibility, which was made from Salviae Miltiorrhizae Radix et Rhizoma and Carthami Flos with scientific formalation by extraction and refining. The CMP is used for treatement of organ flood insufficiency and ischemic infarction diseases. It can obviously relieving symptoms of angina pectoris, improve myocardial ischemia, regress atherosclerosis plaque, and inhibit thrombus. This paper elaberated the bio-active constituents, compatibility effects and action mechanism, and clinical applications of the CMP in order to further upgrade basic research and application levels of the CMP.
Animals ; Carthamus tinctorius ; chemistry ; Drug Compounding ; Drug Interactions ; Drugs, Chinese Herbal ; chemistry ; pharmacology ; Humans ; Medicine, Chinese Traditional ; methods ; Salvia miltiorrhiza ; chemistry

Objective　To explore the relationship between hemolymph phenol oxidase and the melanization of Plasmodium yoelii oocysts in Anopheles dirus. Methods　An Anopheles dirus-Plasmodium yoelii system was used Anopheles dirus were divided into 3 groups, that is, non-blood-fedding (N), normal-blood-fedding (B) and infected-blood-fedding (I). The activities of MPO and o-DPO in hemolymph from 3 groups were determined with native polyacrylamide gel electrophoresis (PAGE) and density scanning at 5, 7, 11 and 15 d after blood feeding. Results　Both MPO and o-DPO activity were significantly higher in group I than group N and B (P<0.05). But with the melanization of Plasmodium yoelii oocysts, both MPO and o-DPO activity in group I were decreased in comparison with group N, especially on the 15 th day after infected-blood feeding. MPO and o-DPO activity in group B were significantly stronger than those of group N. Conclusion　Blood feeding and infection of Plasmodium yoelii both can activate the cascade. The heamolymph phenol oxidase may play an important role in the melanization of Plasmodium yoelii oocysts in Anopheles dirus.

Aging can cause degenerative changes in the function of multiple tissues and organs in the body. Gastrointestinal diseases and intestinal dysfunction are very common in the elderly people. The purpose of this study is to explore the effect of the total extract of Astragalus membranaceus (Fisch.) Bge. on intestinal function and gut microbiota homeostasis in natural aging mice, which will provide clues for further mechanism study. The natural aging mice model is established and animal experiments follow the regulations of the Animal Ethics Committee of Nanjing University of Traditional Chinese Medicine. The overall health of the mice was evaluated by the "frailty index" scoring method. The intestinal absorption and transport function were measured by detecting intestinal glucose absorption capacity, transport time, lipase and amylase activities of aging mice. Intestinal inflammation was assessed by detecting inflammatory cytokines by enzyme-linked immunosorbent assay (ELISA). The pathological changes in the intestines of aging mice were tested by hematoxylin-eosin (H&E) staining and alizarin blue (AB) staining. The qRT-PCR method was used to explore the gene transcription level related with the proliferation and differentiation of intestinal stem cells. Microbiota analysis based on 16S rDNA were used to evaluate the composition of gut microbiota. The results showed that Astragalus had a tendency to reduce the "frailty index" of aging mice, but did not show a significant difference. In some indicators of aging phenotype, Astragalus has the most significant effect on hair loss and physical fitness. In terms of intestinal function, Astragalus could increase intestinal glucose absorption capacity, shorten intestinal transportation time and promote lipase secretion in aging mice. The levels of inflammatory cytokines such as tumor necrosis factor-α (TNF-‍α) in the aging intestinal tissue were reduced after Astragalus administration. Astragalus also ameliorated the pathological degeneration of the intestinal tissue of aging mice by increasing the length of small intestinal villi, the thickness of colonic mucosa and goblet cell number. In addition, Astragalus elevated the expression of genes associated with the proliferation and differentiation in jejunum and modulated gut microbiota, especially restoring the abundance of Lachnospiraceae. Taken together, the above research results demonstrate the total extract of Astragalus as a key factor improving the intestinal function and gut microbiota homeostasis of aging mice.

In this study, the ameliorative effects of Flos Abelmoschus manihot on mice with chronic inflammatory bowel disease (IBD) were investigated and its effects on the structure of the intestinal flora as well as the lipid profile in feces of IBD mice were analyzed. All animal welfare and experimental procedures followed the regulations of the Animal Ethics Committee of Nanjing University of Chinese medicine. A mouse model with chronic IBD induced by dextran sulfate sodium (DSS) was used to evaluate changes in body weight, disease activity index (DAI), colonic histopathological damage as well as gene expression levels of inflammatory factors in the colon. Fecal samples from mice in each group were collected and subjected to Illumina high-throughput sequencing to detect the abundance of intestinal flora; samples were analyzed by UHPLC-Q-Exactive^® HF Quadrupole-Orbitrap^® of untargeted lipidomics, which detects lipid content in feces. Administration of Flos Abelmoschus manihot could significantly restore the body weight and ameliorate colonic histopathological damage in IBD mice. Sequencing of the gut microbiota revealed that the species diversity and richness of the gut microbiota in IBD mice were decreased, with a significant increase in the abundance of Verrucomicrobia and a significant decrease in the abundance of Bacteroidetes; Flos Abelmoschus manihot significantly increased the richness and diversity of intestinal microbiota in IBD mice, increased the number of taxa species at each level, and restored the abundance of bacteria in the phylum Bacteroidetes. Analysis of fecal lipid profiles identified the most significant changes in sphingolipid and glycerophospholipid metabolic pathways in IBD mice, with Flos Abelmoschus manihot inhibiting ceramide and sphingomyelin synthesis in sphingolipid metabolism. In summary, Flos Abelmoschus manihot can effectively improve the disease condition of mice with chronic IBD, and it has the effect of regulating intestinal flora homeostasis and lipid metabolism, but the related mechanism between the two still needs to be deeply explored.

OBJECTIVETo analyze the influence of included angle between the anterior aspects of S2 and S vertebral bodies on pelvic inlet imaging in the pelvic midline sagittal plane.

METHODSTotally 58 axial pelvic CT scans were chosen as study objects including 43 males and 15 females,with an average age of 40.7 years old (ranged,18 to 68 years old). The angles between the anterior aspects of S2 and S1, vertebral bodies and the horizontal plane on midline sagittal CT reconstruction were measured to simulate the optimal S2 and S1 inlet angles. The included angle between the anterior aspects of S2 and S1 vertebral bodies was calculated by subtrocting the S1,inlet angle from the S2 inlet angle defined as a base number. Then, the impact of the calculated included angles on the pelvic inlet imaging was analyzed. Results:The S2 inlet angles averaged (30.5±6.5) degrees; the S inlet angles averaged (25.7±5.9) degrees. The difference between them was significant (t=3.35, P=0.001). Ten patients had zero angle between the anterior aspects of S2 and S1 vertebral bodies; 14 patients had negative angle, averaged-(8.9±8.1) degrees; 34 patients had positive angle,averaged (11.8+6.4) degrees.

CONCLUSIONThe difference of included angle between the anterior aspects of S2 and S1 vertebral bodies leads to the difference between S1 inlet view and S2 inlet view in most cases, complicating the pelvic inlet imaging,and affecting the reliability of the application of pelvic inlet view. Utilizing the angles measured on the preoperative midlihe sagittal CT reconstruction to obatin the patient-customized S1 and S2 inlet views could accurately guide the S1 and S2 iliosacral screw insertion.

Adolescent ; Adult ; Aged ; Animals ; Bone Screws ; Female ; Fracture Fixation, Internal ; methods ; Humans ; Image Processing, Computer-Assisted ; Male ; Middle Aged ; Pelvis ; anatomy & histology ; injuries ; Spine ; anatomy & histology ; Tomography, X-Ray Computed ; Young Adult

Aged ; Female ; Humans ; Male ; Middle Aged ; Multiple Myeloma ; diagnosis ; immunology ; Prognosis ; T-Lymphocyte Subsets ; immunology

OBJECTIVETo study the feasibility to repair the peripheral nerve gap with tissue engineering scaffold complex that is composed of medical biodegradable material agarose hydrogel and nerve growth factor (NGF).

METHODSChitosan tube containing agarose hydrogel and NGF was transplanted to bridge a 10 mm gap of injured sciatic nerve in rat. Chitosan duct without agarose hydrogel and NGF was used as negative control, while autograft nerve as positive control. Sixteen weeks after operation, the regeneration of nerve fiber was observed with morphological and immunohistochemistrical methods.

RESULTThe number and diameter of regenerating nerve fibers bridged by the scaffold complex of agarose hydrogel and NGF were better than negative control group (P < 0.01) and reached the level of autograft nerve group.

CONCLUSIONSThe new type of tissue engineering scaffold complex of agarose hydrogel and NGF may provide a microenvironment, as well as autograft nerve, to promote nerve regeneration. This technique may benefit patients with nerve injury in the future.

Absorbable Implants ; Animals ; Biocompatible Materials ; Chitosan ; Disease Models, Animal ; Feasibility Studies ; Hydrogel, Polyethylene Glycol Dimethacrylate ; Male ; Nerve Growth Factors ; pharmacology ; Nerve Regeneration ; drug effects ; Peripheral Nerve Injuries ; Peripheral Nerves ; physiopathology ; surgery ; Prosthesis Implantation ; Rats ; Rats, Sprague-Dawley ; Sepharose ; Stents ; Tissue Engineering ; methods

OBJECTIVETo establish hepatitis C virus (HCV) infected cell model which is similar to the infection in vivo and can support HCV to replicate for a long time.

METHODSAfter infected with HCV-positive serum, Hep G2 cells were cultured for 60 days. Nested RT-PCR was used to detect plus and minus HCV RNA in cultured cells and supernatants.

RESULTSPlus HCV RNA was detected intermittently in Hep G2 cells during 2-30 days, minus HCV RNA was detected during 3-30 days after infection, the detection rate was similar to plus HCV RNA. Plus and minus HCV RNA can be still intermittently detected during 31-60 days after infection. However, the detection rate gradually declined. Plus HCV RNA was also found intermittently positive in the supernatant, and the detection rate was consistent to that in cells. Minus HCV RNA was not detected in the supernatant.

CONCLUSIONHep G2 cells were susceptible to HCV, and could support HCV to replicate for a relatively long time. Hep G2 is an ideal HCV infection cell model.

Cell Line, Tumor ; Hepacivirus ; genetics ; growth & development ; Humans ; RNA, Viral ; genetics ; isolation & purification ; Reverse Transcriptase Polymerase Chain Reaction ; Virus Replication

Along with progress of modern science and technology, human is utilizing natural resources and their inherent law more effectively and more efficiently according to their own purposes. Chinese medicine pair (CMP) is relatively fixed combination of two TCMs which was proven to be effective in clinical application. CMP has its inner specification, and it is an intermediate point between single herb and many TCM formulae. With the aid of modern science and technology, and by means of choosing appropriate strategies and approaches, the compatibility rules of CMP might be revealed, which will be significant to develop the compatibility theory of TCM formulae and create modern TCM new drugs.
Animals ; Clinical Trials as Topic ; Drug Interactions ; Humans ; Medicine, Chinese Traditional ; methods ; Research Design ; Systems Biology