Dental Pulp Cavity ; diagnostic imaging ; pathology ; Humans ; Radiography ; Root Canal Therapy

Adult ; Hamartoma ; pathology ; Humans ; Lung ; pathology ; Lung Neoplasms ; pathology

Microbe infection is not only the key pathogenic factor of primary endodontic infectious diseases, but also the arch-crimina of endodontic treatment fail. Therefore, the endodontic treatment success is based on the debridement of infectious root canal, elimination of bacteria, and the prevention of endodontic reinfection. It is beset with difficulties to control the endodontic infection in clinic because of the bacterial variety, anatomic complexity of root canal, and limitation of the root canal therapeutic methods. In order to get the ideal prognosis of the root canal treatment, in the procedure of the therapy, it should be the tight isolation of tooth, reasonable choose of the root canal preparation technique, rational use of root canal preparation instrument, effective irrigation of root canal, proper root canal dressing, and the 3-dimensional obturation of root canal.
Humans ; Infection Control ; Root Canal Irrigants ; Root Canal Preparation ; Root Canal Therapy

OBJECTIVETo study chemical constituents from Ilex pubescens.

METHODThe constituents were isolated by chromatographic method and the structures were identified on the basis of spectral alanlysis.

RESULTSix lignin glycosides were identified as (7S, 8R) dihydrodehydrodiconiferyl alcohol 4-O-beta-D-glucopyranoside (1), (-)-olivil-4'-O-beta-D-glucopyranoside (2), (7S, 8R) dehydrodiconiferyl alcohol 4-O-beta-D-gluco-pyranosid (3), (+)-cyclo-olivil 6-O-p-D-glucopyranoside (4), (+)-medioresinol di-O-beta-D-glucopyranoside (5), (+)-pinoresinol-4, 4'-O-bisglucopyranoside (6).

CONCLUSIONAll of them were isolated from this plant for the first time.

Chromatography, Gel ; Furans ; chemistry ; isolation & purification ; Glucosides ; chemistry ; isolation & purification ; Glycosides ; chemistry ; isolation & purification ; Ilex ; chemistry ; Lignans ; chemistry ; isolation & purification ; Lignin ; chemistry ; isolation & purification ; Plant Roots ; chemistry ; Plants, Medicinal ; chemistry

OBJECTIVETo isolate and elucidate the constituents from rhizome of Arundina graminifolia.

METHODTheconstituents were extracted with 95% alcohol and isolated by chromatography on silica gel, Sephedax LH-20. The structures were determined by UV, IR, NMR and MS spectral analysis.

RESULTFive phenanthrene constituents were identified as 7-hydroxy-2, 4-dimethoxy-9, 10-dihydrophenanthrene( I ), 4, 7-dihydroxy-2-methoxy-9, 10-dihydrophenanthrene ( II ), 2, 7-dihydroxy-4-methoxy-9, 10-dihydrophenanthrene ( III ), 7-hydroxy-2-methoxyphenanthrene-1,4-dione ( IV ), 7-hydroxy-2-methoxy-9, 10-dihydrophenanthrene-1,4-dione (V), respectively.

CONCLUSIONAll compounds were isolated from rhizome of A. graminifolia for the first time.

Orchidaceae ; chemistry ; Phenanthrenes ; chemistry ; isolation & purification ; Plants, Medicinal ; chemistry ; Rhizome ; chemistry

AIMTo study chemical constituents from pine cone of Pinus armandii Franch.

METHODSThe constituents were isolated by chromatographic method and the structures were identified on the basis of spectral analysis.

RESULTSFour compounds were identified as 7-oxo-12alpha, 13beta-dihydroxyabiet-8(14)-en18-oic acid (I), 7-oxo-13beta-hydroxyabiet-8 (14)-en-18-oic acid (II), 8 (14)-podocarpen-13-on-18-oic acid (III) and lambertianic acid (IV).

CONCLUSIONCompound I is a new diterpenoid and compounds II, III were isolated from this plant for the first time.

Carboxylic Acids ; chemistry ; isolation & purification ; Diterpenes ; chemistry ; isolation & purification ; Fruit ; chemistry ; Molecular Conformation ; Naphthalenes ; chemistry ; isolation & purification ; Pinus ; chemistry ; Plants, Medicinal ; chemistry

Traditional Chinese medicine (TCM) dispensing is the final step of TCM used for clinical treatment, the stability of TCM dispensing is the guarantee of good clinical effect. Establishment of effect-constituent equivalence for Chinese herbal pieces based on clinical efficacy, can not only guarantee the stability of TCM dispensing, but also relate to the precision of clinical effect. This study chose Coptidis Rhizoma as the model, established effect-constituent equivalence of Coptidis Rhizoma, based on the effect-constituent index already established by our research group, and taking into consideration of homogeneity of clinical dosage and compliance of decoction, the uniformity of dispensing for different specification of Coptidis Rhizoma decoction pieces was studied. This research model was then applied to guide the specification-optimization of Coptidis Rhizoma and its clinical dispensing. The result indicated, effective constituent equivalence could reflect the fluctuation of specification, dosage and decoction to the fluctuation of efficacy; Optimized Coptidis Rhizoma decoction pieces had the characteristic of high homogeneity as for clinical dispensing, good compliance as for decoction, and high effective constituent equivalence. In conclusion, effective constituent equivalence could improve relevance of methods of TCM dispensing control to clinical effect. Preparated Superior-standard Decoction Pieces based on effective constituent equivalence was featured by good quality and a good practice of adjustable dosage, which could promote the development of TCM decoction pieces toward precision medicine.
Chemistry, Pharmaceutical ; methods ; Coptis ; chemistry ; Drugs, Chinese Herbal ; chemistry ; Quality Control ; Rhizome ; chemistry ; Therapeutic Equivalency

OBJECTIVETo study the chemical constituents of the leaves of pineapple.

METHODChromatographic methods were used to isolate compounds from the leaves of pineapple and spectral methods were used to identify the structures of the isolated compounds.

RESULTCompound 1 was isolated from the leaves of pineapple. It was identified as 1-O-beta-D-glucopyranosyl-(2S, 3R, 4E, 11E)-2-[(2(R)-hydroxydocosanoyl) amido]-4, 11-hexadecanediene-1, 3-diol.

CONCLUSIONCompound 1 was a new compound.

Ananas ; chemistry ; Cerebrosides ; chemistry ; isolation & purification ; Molecular Conformation ; Molecular Structure ; Plant Leaves ; chemistry ; Plants, Medicinal ; chemistry

To study relevant risk factors of Shenmai injection induced adverse reactions by using Logistic model and ROC curve, and made the prediction for the occurrence of relevant adverse reactions/events. Case data of patients treated with Shenmai injection were collected by using the prospective, multi-center, large-sample, nested-case control method, in order to analyze the risk factors of Shenmai injection-induced adverse reactions/events, establish the logistic model and draw the receiver operating characteristic (ROC) curve for risk factors. During the study, 7632 patients (including 3 477 males and 4 155 females) were included, and eight of them suffered adverse reactions/events. Based on a multi-factor Logistic model analysis, the age (> or = 50 years) (OR = 5.061, 95% CI: 2.197-7.924; P = 0.001), the total number of medication days (OR = -1.020, 95% CI: -l.652 - 0.388; P = 0.002) and the single dose (OR = 0.245, 95% CI: 0.127-0.364; P = 0.000) were significant independent risk factors for Shenmai injection-induced adverse reactions/events. According to the results, ROC curves were drawn with age (> or = 50 years), the total number of days of inedication and single dose; The area under ROC curves the joint predictor (0.9753, 95% CI: 0.9443-1.000, P < 0.005) was larger than that of the other three single indexes, with a higher risk prediction value. The independent risk factors for Shenmai injection-induced adverse reactions/events included the age (> or = 50 years), the total number of days of medication and single dose. In clinical practice, the age (> or = 50 years), the total number of days of medication and the medication dose can be substituted in the joint predictor calculation formula (P = 1 / [1 + e(-(-21.58 + 5.061 x Xage - 1.020 x Xd + 0.245 x X(mL)] to predict the potential adverse reactions of patients and adjust the dosage regimen.
Adolescent ; Adult ; Aged ; Aged, 80 and over ; Child ; Child, Preschool ; China ; epidemiology ; Drug-Related Side Effects and Adverse Reactions ; epidemiology ; etiology ; Drugs, Chinese Herbal ; administration & dosage ; adverse effects ; Female ; Humans ; Infant ; Logistic Models ; Male ; Middle Aged ; Prospective Studies ; ROC Curve ; Risk Factors ; Young Adult

OBJECTIVETo culture and amplify the young rabbit's bone marrow stromal cells (BMSCs) in vitro, and to observe the effect of hypothermia on the cells' growing behavior and biological function.

METHODSBMSCs were acquired from the rabbit' tibia bone marrow and induced to mature osteoblasts in vitro. The cultured cells growing well in vitro were preserved in liquid nitrogen. The anabiotic cells having cryopreserved for 1 week were chosen as the experimental group, and the routine 7th generation as the control group. Their biological function in comparion by the examination of morphological changes, cells' proliferation ability, colone forming ratio, synthesis ability of ALP and protein, mineralized nodes forming ability were observed.

RESULTSAs contrast to the control groups, the anabiotic cells also grew and proliferated well in vitro except a little more slowly than before. They had the similar general shape in all the time segments, but a little differences in cells' ultrastructure. The experimental groups also had the typical characters of mature osteoblasts, and high abilities of the synthesis of ALP and proteins. The statistic data showed that these two groups had no significant difference (P > 0.05).

CONCLUSIONThe cryopreserved osteoblasts had the same biological functions and the similar growing behaviors as before. These results suggest that it is practical to use the cryopreserved osteoblasts for further study on bone tissue engineering.

Animals ; Bone Marrow Cells ; Bone and Bones ; Cell Differentiation ; Cell Proliferation ; Cells, Cultured ; In Vitro Techniques ; Osteoblasts ; Rabbits ; Tissue Engineering