Objective To investigate the neural proliferation , differentiation and apoptosis of the developing spinal cord of the mouse and to discuss the mechanism of spinal cord ’ s development .Methods 5-Bromodeoxyuridine ( BrdU) assay was used to mark the proliferative neural stem cells , and the immunofluorescent stainings ( DCX, NeuN and Caspase8) were carried out to visualize the newborn neurons , mature cells and apoptotic cells in the spinal cord with 173 mice arrange from E18 to P90.Results BrdU positive neural stem cells appeared evenly in the spinal cord at early days . With age increasing , the neural stem cells differentiated into neuroglial cells and neurons .The newborn neurons in the subventricular zone migrated toward the intermediate zone ( putative gray matter ) and differentiated into mature neurons gradually .With neurons ’ concentrating towards the center , the gray matter formed an “H” shape .In the meantime , with neural differentiation , some apoptotic neurons appeared among the newborn neurons and mature neurons . Double immunostaining showed that most apoptotic neurons were newborn neurons , suggesting the neuroapoptosis more likely occurred in newborn neurons .The statistical data showed that the number of DCX , NeuN and Caspase-8 positive cells reduced with age increasing , suggesting neural differentiation and neuroapoptosis decreased during spinal cord ’ s development .Conclusion Neural proliferation , neural differentiation and neuroapoptosis occur in developing spinal cord . They work together to regulate the formation and development of the spinal cord .

Drying is the critical link during pharmaceutical process of traditional Chinese medicine (TCM), which is directly related to the quality of drugs. The key to technology upgrading of pharmaceutical equipment in Chinese materia medica enterprise is the development of new drying techniques, which concerns the modernization of TCM. The study provides new ideas for the drying technology and equipment by means of reviewing the research status of drying process for the traditional Chinese medicinal materials and preparations, and analyzing the traditional and modern drying methods and equipment, as well as their existing problems and corresponding measures for the drying processes and equipment. In addition, this paper expounds the development trend of traditional Chinese medicinal materials and preparations of drying process and equipment.
Chemistry, Pharmaceutical ; instrumentation ; methods ; standards ; Drugs, Chinese Herbal ; chemistry ; Humans ; Medicine, Chinese Traditional ; instrumentation ; standards ; Plants, Medicinal ; chemistry

Objective To prepare a conjugate vaccine by linking Haemophilus influenzae type b (Hib)polysaccharide to PsaA protein carrier and evaluate the immunogenicity and efficacy of the conjugate vaccine. Methods A recombinant protein rPsaA,expressed by using the genetic engineering technology, was used as a protein carrier to prepare conjugate vaccine together with Hib polysaccharide. Ten mice at age of 3 weeks were immunized with the conjugate vaccine,while another 10 age-matched mice were immunized with Hib-tetanus toxoid(Hib-TT)vaccine which was produced formerly as a control. The mice treated with equal volume of PBS were set up as the negative control. The IgG antibodies in serum samples against PsaA and Hib polysaccharide were detected in two weeks after the final immunization. A suspension of Pneumococ-cus was injected into the middle ears of mice from experiment and control group. Histopathological analysis was performed to measure the clearance of bacteria in the middle ears and the severity of infection on days 3 and 7 after bacterial challenge. Results The rPsaA protein was prepared by the genetic engineering tech-nology and purified successfully with anion-exchange column. The Hib polysaccharide-PsaA protein conju-gate vaccine was prepared through a series of amide condensation reactions. The detection of IgG antibodies against PsaA protein and Hib polysaccharide in the immunized mice demonstrated that there was no signifi-cant difference with the titer of IgG against Hib polysaccharide between the mice immunized with the Hib-PsaA conjugate vaccine and those immunized with the Hib-TT vaccine. Less Pneumococcus strains were de-tected in the middle ears of mice immunized with the conjugate vaccine than those mice immunized with the Hib-TT vaccine three days after challenge. The mice from control group showed severe inflammation in the middle ears than those from experiment group. The Hib polysaccharide-PsaA protein conjugate vaccine im-proved protection against Pneumococcus infections as compared with the Hib-TT vaccine. Conclusion The rPsaA protein could be produced by genetic engineering technology and purified by anion-exchange column. The Hib polysaccharide was successfully conjugated with the rPsaA protein through amide condensation reac-tion. Both anti-PsaA and anti-Hib immune responses were induced in young mice by the injection of Hib pol-ysaccharide-PsaA protein conjugate vaccine. Apart from providing protection against Hib infection,the con-jugate vaccine might also be used for the prevention of acute otitis media caused by Pneumococcus infection.

This study is to explore the amelioration of piperine on chronic acute combining stress rat with depression-like behavior, visceral sensitivity, and its effect on the expression of serotonin (5-HT) and synaptophysin. Forty two SD rats were divided into seven groups: blank group, model group, piperine (12.5, 25, 50 and 100 mgkg-1, ig) and imipramine (10 mgkg-1, ip) groups. The rat model of irritable bowel syndrome was established by chronic acute combining stress, and then to evaluate depression-like behavior and visceral sensitivity. The expressions of 5-HT and synaptophysin in the hippocampus and colon were determined by high performance liquid chromatography (HPLC) and Western blotting, respectively. The duration of immobility of IBS rat in the forced swimming test had been significantly increased, the sucrose consumption of IBS rat had been reduced and visceral sensitivity was obviously elevated in the IBS model group as compared with those in the normal control group (P<0.05, P<0.01). As compared with those in the normal control group, the expression of 5-HT significantly decreased, 5-HIAA/5-HT ratio significantly increased in the hippocampus of IBS model group (P<0.05), but opposite presentations were noted in the colon (P<0.05). As compared with that in the normal control group, the synaptophysin expression in the hippocampus decreased significantly but obviously increased in the colon (P<0.05). Piperine improved the behavior of IBS rats, and reversed the levels of 5-HT and 5-HIAA, and 5-HIAA/5-HT proportion in the hippocampus and colon (P<0.05); besides, they significantly reverse the synaptophysin level in the hippocampus and colon (P<0.05). The presence of depression and visceral sensitivity had been changed in IBS rats, with abnormal expression of 5-HT and synaptophysin in the brain-gut system. Piperine can ameliorate the changes of the behavior and regulation of serotonin and synaptophysin expression in IBS rat model.
Alkaloids ; isolation & purification ; pharmacology ; Animals ; Benzodioxoles ; isolation & purification ; pharmacology ; Colon ; metabolism ; Hippocampus ; metabolism ; Hydroxyindoleacetic Acid ; metabolism ; Irritable Bowel Syndrome ; metabolism ; physiopathology ; Male ; Motor Activity ; drug effects ; Piper nigrum ; chemistry ; Piperidines ; isolation & purification ; pharmacology ; Plants, Medicinal ; chemistry ; Polyunsaturated Alkamides ; isolation & purification ; pharmacology ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Serotonin ; metabolism ; Synaptophysin ; metabolism

Toxoplasma gondii infection during pregnancy can result in abortion,premature delivery,fetal death,deformity,and impact the physical and intellectual development of the newborns.This is an investigation on the consequences of pregnancy in Toxoplasma gondii-infected women,the development of their babies,and the effect of pyrimethamine treatment during 1990-1996 in Baoding City.

Objective: To observe the clinical efficacy of DZWJY-1 type electronic moxibustion apparatus and traditional moxibustion in treating knee osteoarthritis (KOA). Methods: A total of 76 eligible patients were randomized into an electronic moxibustion apparatus group and a traditional moxibustion group, with 38 cases in each group. The electronic moxibustion apparatus group was intervened by DZWJY-1 type electronic moxibustion apparatus, and the traditional moxibustion group received moxa stick moxibustion for treatment. Neixiyan (EX-LE 4), Dubi (ST 35), Xuehai (SP 10) and Liangqiu (ST 34) were selected for both groups and the treatment was conducted 3 times a week for a total of 12 times. The visual analog scale (VAS) and the Western Ontario and McMaster Universities osteoarthritis index (WOMAC) scores were observed before treatment and after 6 and 12 sessions of treatment, respectively. Results: There were 4 dropout cases in the traditional moxibustion group. Therefore, this trial had 72 valid cases, including 38 cases in the electronic moxibustion apparatus group and 34 cases in the traditional moxibustion group, the differences in the baseline data between the two groups were statistically insignificant (P>0.05). After 6 and 12 sessions of treatment, the VAS scores decreased significantly with the increase of treatment sessions in both groups (all P<0.01), and the betweengroup differences were statistically insignificant at the same time points (both P>0.05). The pain intensity was evaluated using the weighted value of VAS score. The markedly effective rate was 47.4％ and the total effective rate was 89.5％ in the electronic moxibustion apparatus group, versus 50.0％ and 94.1％ in the traditional moxibustion group, and the betweengroup differences were statistically insignificant (both P>0.05). After 6 and 12 sessions of treatment, the total score and the component scores including pain, stiffness and difficulty moving in the WOMAC decreased significantly with the increase of treatment sessions in both groups (all P<0.01), and the between-group differences were statistically insignificant (all P>0.05). Conclusion: Electronic moxibustion apparatus and traditional moxibustion both are effective in reducing joint pain and improving joint function in KOA patients, and they are equivalent comparing the clinical efficacy.

OBJECTIVETo investigate the expression of HPA and HIF-1alpha in human esophageal squamous cell carcinoma and their relationship with cancer development, invasion and metastasis.

METHODSThe expression of HPA mRNA and HIF-1alpha protein in 23 mucosa specimens of incisal margin, 26 para-tumorous dysplastic tissues and 70 esophageal squamous cell carcinoma specimens were detected by in situ hybridization assay and immunohistochemical staining, respectively.

RESULTSThe positive expression of HPA mRNA and HIF-1alpha protein were significantly increased as the epithelial cells progressed into carcinoma (P < 0.05). The expression of HPA mRNA and HIF-1alpha protein in the esophageal squamous cell carcinoma were significantly correlated with the invasion depth, lymph node metastasis and clinical staging (P < 0.05), while it was not correlated with the differentiation of tumors (P > 0.05). There was a close correlation between the expression of HPA mRNA and HIF-1alpha protein in the carcinoma tissues (P < 0.01).

CONCLUSIONThe high expression of HPA mRNA and HIF-1alpha protein is correlated with carcinogenesis, progression, invasion and metastasis of esophageal squamous cell carcinoma. There may be a positive cooperation between two of them in the carcinogenesis and development of esophageal carcinoma. The determination of HPA mRNA and HIF-1 alpha will be useful in predicting tumor biological behavior.

Adult ; Aged ; Carcinoma, Squamous Cell ; metabolism ; pathology ; Esophageal Neoplasms ; metabolism ; pathology ; Esophagus ; metabolism ; pathology ; Female ; Gene Expression Regulation, Neoplastic ; Glucuronidase ; genetics ; metabolism ; Humans ; Hypoxia-Inducible Factor 1, alpha Subunit ; genetics ; metabolism ; Immunohistochemistry ; In Situ Hybridization ; Lymphatic Metastasis ; Male ; Middle Aged ; Mucous Membrane ; metabolism ; Neoplasm Invasiveness ; Neoplasm Staging ; RNA, Messenger ; metabolism

OBJECTIVETo explore the feasibility of evaluating complete ischemia-reperfusion injury (IRI) of the testis by contrast-enhanced ultrasonography with microbubbles (MB) targeted to P-selectin (MBp) in rabbits.

METHODSWe randomly divided 30 healthy adult rabbits into five groups of equal number (control, 0.5 h IRI, 1 h IRI, 2 h IRI, and 4 h IRI), prepared phospholipid MB and MBp, and performed contrast-enhanced ultrasonography of the bilateral testes with MB or MBp at an interval of 20 min at different times after IRI. When MB or MBp disappeared completely in the healthy testis at 4 to 5 min after intravenous injection, we recorded the power of the first frame (F-P) in the IRI testes followed by immunohistochemical staining of the testis tissue.

RESULTSCEU with MBp achieved a significantly higher F-P than that with MB in all the IRI groups (P < 0.05), which was (8.34 +/- 1.20) versus (1.87 +/- 0.25) 10(-5) AU at 2 hours, but there was no significant difference between MB and MBp in the control rabbits (0 AU, P > 0.05). Immunohistochemistry showed a significantly time-dependent increase in the expression of P-selectin in the vascular endothelial cells of the IRI testes, but not in those of the control.

CONCLUSIONContrast-enhanced ultrasonography with MBp can be used to evaluate the inflammatory reaction of testicular ischemia-reperfusion injury.

Animals ; Antibodies ; Disease Models, Animal ; Male ; Microbubbles ; P-Selectin ; immunology ; Rabbits ; Reperfusion Injury ; diagnostic imaging ; Testis ; blood supply ; Ultrasonography

OBJECTIVETo observe the clinical efficacy on pain in postmenopausal osteoporosis treated with the warm acupuncture therapy and discuss its effect mechanism.

METHODSNinety cases of postmenopausal osteoporosis were randomized into a warm acupuncture group, an electroacupuncture group and a medication group, 30 cases in each group. In the warm acupuncture group and the electroacupuncture group, Dazhu (BL 11), Shenshu (BL 23) and Xuanzhong (GB 39) were selected bilaterally and stimulated with the warm acupuncture and electroacupuncture therapies respectively, once a day for 30 days totally. In the medication group, caltrate-D tablets were prescribed, 600 mg, once a day for 30 days totally. The changes in the bone density T value, visual analogue scale (VAS) score, serum insulin like growth factor 1 (IGF-1), interleukin 6 (IL-6) and tumor necrosis factor (TNF-alpha) were observed before and after treatment in the three groups.

RESULTS(1) The bone density T value in the patients of postmenopausal osteoporosis did not change obviously after 30 days treatment with the three therapies; (2) VAS score was all reduced after treatment, in which, the result in the warm acupuncture group was the most obvious (6.73 +/- 0.24 before treatment vs 4.43 +/- 0.26 after treatment). The value after treatment in the warm acupuncture group was different significantly as compared with the electroacupuncture group (5.13 +/- 0.31) and the medication group (5.17 +/- 0.33, both P < 0.05). (3) The level of serum IGF-1 was improved after treatment in the warm acupuncture therapy [(119.5 +/- 20.1) ng/mL before treatment vs (156.5 +/- 23.9) ng/mL after treatment], which was more apparent as compared with the electroacupuncture group [(136.3 +/- 24.5) ng/mL] and the medication group [(127.7 +/- 22.1) ng/mL, all P < 0.05]. Concerning to reducing the levels of IL-6 and TNF-alpha in serum, the results in the warm acupuncture group were superior to the other two groups (all P < 0.05).

CONCLUSIONThe warm acupuncture therapy achieves the significant efficacy on pain in postmenopausal osteoporosis, which could be related to increasing the level of IGF-1, decreasing the levels of IL-6 and TNF-alpha, promoting bone formation and inhibting bone absorption.

Acupuncture Therapy ; methods ; Bone Density ; Female ; Humans ; Insulin-Like Growth Factor I ; metabolism ; Interleukin-6 ; blood ; Middle Aged ; Osteoporosis, Postmenopausal ; blood ; physiopathology ; therapy ; Pain Management ; Tumor Necrosis Factor-alpha ; blood

Adult ; Diagnosis, Differential ; Female ; Glycogen ; metabolism ; Glycogen Storage Disease Type II ; pathology ; Humans ; Liver ; metabolism ; pathology ; Muscle, Skeletal ; metabolism ; pathology ; Muscular Dystrophies, Limb-Girdle ; pathology ; Pyomyositis ; pathology ; Young Adult