The extracting technology of salidroside, tyrosol, crenulatin and gallic acid from Rhodiolae Crenulatae Radix et Rhizoma was optimized. With extraction rate of salidroside, tyrosol, crenulatin and gallic acid as indexes, orthogonal test was used to evaluate effect of 4 factors on extracting technology, including concentration of solvent, the dosage of solvent, duration of extraction, and frequency of extraction. The results showed that, the best extracting technology was to extract in 70% alcohol with 8 times the weight of herbal medicine for 2 times, with 3 hours once. High extraction rate of salidroside, tyrosol, crenulatin and gallic acid were obtained with the present technology. The extracting technology was stable and feasible with high extraction rate of four compounds from Rhodiolae Crenulatae Radix et Rhizoma, it was suitable for industrial production.
Chemical Fractionation ; methods ; Chemistry, Pharmaceutical ; methods ; Coumarins ; isolation & purification ; Drugs, Chinese Herbal ; isolation & purification ; Gallic Acid ; isolation & purification ; Glucosides ; isolation & purification ; Phenols ; isolation & purification ; Phenylethyl Alcohol ; analogs & derivatives ; isolation & purification ; Rhizome ; chemistry ; Rhodiola ; chemistry

piRNA(Piwi-interacting RNA) is a novel class of small single strand RNA that were recently isolated from testes of the mammals, associate with PIWI proteins, and are organized into distinct genomic clusters. These RNAs are typically 30 nt long, strikingly different from microRNAs in their length, expression pattern, and genomic organization. piRNA has a role in RNA silencing via the formation of an RNA-induced silencing complex (RISC) with Piwi proteins, these piRNA complexes (piRCs) have been linked to transcriptional gene silencing of retrotransposons and other genetic elements in germ line cells, particularly those in spermatogenesis.Recent researches and progresses of piRNAs are reviewed.

Nowadays the role of genetic findings in determining the diagnosis, therapy and prognosis of acute myeloid leukemia (AML) has become more valuable. To improve and validate the detection of clonal chromosomal aberrations in leukemia, we designed a combined application of karyotyping with multiplex reverse transcription-polymerase chain reaction (RT-PCR) and fluorescence in situ hybridization (FISH), and addressed the expression and distribution of fusion genes among the subtypes of Chinese adult patients with de novo AML. Multiplex RT-PCR assays were performed on 477 samples from newly diagnosed AML patients, and cytogenetic data were obtained from 373 of them by R or G banding techniques and those in some cases were confirmed by FISH. The PCR products in some suspected cases were tested by two-directional sequencing. The results showed that except unqualified samples, fusion genes were detected by multiplex RT-PCR in 211 of 474 patients (44.51%), including AML1-ETO, CBFβ-MYH11, PML-RARα, PLZF-RARα, NPM-RARα, MLL rearrangements, BCR-ABL, DEK-CAN, SET-CAN, TEL-PDGFR, TLS-ERG, AML1-MDS1 (EVI-1). In 373 patients, who took both multiplex RT-PCR and karyotype analysis, the detection rate of chromosomal aberrations by using multiplex RT-PCR and karyotyping was 160/373 (42.89%) and 179/373 (47.98%) respectively, and the combination could optimize the detection rate of clonal genetic abnormalities to 216/373 (57.90%). The PCR results from 11 cases "normal" in karyotyping but abnormal in RT-PCR for MLL rearrangements were confirmed by two-directional sequencing. It is concluded that karyotype studies remain the cornerstone for genetic testing; conventional cytogenetics and molecular-based methods are complementary tests for the detection of clonal genetic aberrations in AML, especially for the cryptic or submicroscopic aberrations. Once a genetic marker has been identified by combined analysis, it could be used to monitor residual disease during/after chemotherapy, by quantitative RT-PCR and/or FISH.

Central composite design (CCD) is one of the most commonly used design methods in response surface optimization and has been widely applied in the field of pharmaceutics to optimize preparations. On the 20th anniversary of the introduction of CCD into China, the paper reviews its application in domestic pharmaceutical researches. Based on the brief introduction of basic principle and operation steps of CCD, the mistakes emerging in the application of CCD are summarized, including conceptual confusion with Box-Behnken design and face-centered CCD as well as wrong designs. Besides, the issues concerning the selection of factors and responses are discussed. The article is helpful for researchers to comprehensively understand the CCD and facilitates the rational application of this method.

OBJECTIVETo retrospectively investigate the clinical characteristics of sternal insufficiency fractures (SIFs) of post-menopausal women.

METHODSFindings on the clinical presentation, associated diseases, and imaging of SIFs in 17 postmenopausal women admitted to our hospital between February 1999 and January 2009 were reported.

RESULTSTwelve patients complained of severe pain in their anterior chest. Other symptoms included cough (5 cases), dyspnoea (3 cases), breathlessness (3 cases), and wheeze (2 cases). Four patients had no discomfort. The sternums of 11 cases were tender to palpation. Seventeen patients had osteoporosis. Other associated diseases were chronic obstructive pulmonary disease (7 cases), rheumatoid arthritis (3 cases), systemic lupus erythematosus (1 case), asthma (1 case), and thoracic vertebral fracture (13 cases). Nine patients had received glucocorticoid treatment. The fractures were located in the body of the sternum in 15 patients, in the manubrium in 1 patient, and in the manubriosternal junction in 1 patient. Displaced fracture was present in 13 cases. Lateral radiography of the sternum showed a fracture line in 14 patients. In the remaining 3 cases, other imaging examinations such as bone scan, computed tomography or magnetic resonance imaging demonstrated the presence of a fracture.

CONCLUSIONSOsteoporosis, glucocorticoid therapy, chronic obstructive pulmonary disease, and rheumatoid arthritis might be risk factors for SIFs. SIFs should be considered in the differential diagnosis of chest pain.

Aged ; Aged, 80 and over ; Arthritis, Rheumatoid ; complications ; epidemiology ; Cohort Studies ; Female ; Fractures, Bone ; diagnosis ; epidemiology ; etiology ; Fractures, Stress ; diagnosis ; epidemiology ; etiology ; Glucocorticoids ; adverse effects ; therapeutic use ; Humans ; Middle Aged ; Osteoporosis, Postmenopausal ; chemically induced ; complications ; epidemiology ; Postmenopause ; physiology ; Pulmonary Disease, Chronic Obstructive ; complications ; epidemiology ; Retrospective Studies ; Risk Factors ; Sternum ; injuries ; pathology

This paper summarized the recent 30 years research progress of the chemical constituents from Notopterygii Rhizoma et Radix. The chemical constituents from Notopterygii Rhizoma et Radix mainly consist of coumarins, polyene-polyacetylenes, sesquiterpenes, phenolic acids, while steroids and flavonoids were less reported. All constituents were confirmed and corrected through SciFinder. We also checked the Chinese name and English name and listed the CAS number of each compound. It can provide some guidelines for the research, development and utilization of Notopterygii Rhizoma et Radix in the future. Whether there is columbianin in the Notopterygii Rhizoma et Radix need to be further researched.
Apiaceae ; chemistry ; Drugs, Chinese Herbal ; analysis ; Rhizome ; chemistry

OBJECTIVETo investigate the chemical constituents of dried whole plants of Artemisia annua.

METHODThe chemical constituents were isolated by repeated silica gel chromatography, medium pressure column chromatography, and semi-preparative HPLC, and their structures were elucidated by spectroscopic analyses and comparison of NMR data with those reported in literature.

RESULT15 compounds were isolated and identified to be 5-O-[(E)-Caffeoyl] quinic acid(l), 1,3-di-O-caffeoylquinic acid(2), 4 5-di-O-caffeoylquinic acid(3), 3, 5-di-O-caffeoylquinic acid (4), 3, 4-di-O-caffeoylquinic acid (5), methyl-3,4-di-O-caffeoylquinic acid(6), methyl-3,5-di-O-caffeoylquinic acid(7), 3,6'-O-diferuloylsucrose(8), 5'-β-D-glucopyranosyloxyjasmonic acid(9), Scopoletin(10), scoparone (11), 4-O-β-D-glucopyranosyl-2-hydroxyl-6-methoxyacetophenone (12), chrysosplenol D (13), casticin (14), chrysosplenetin(15).

CONCLUSIONCompounds 2, 6, 8 and 9 are obtained from the Artemisia genus for the first time. Compounds 7 and 15 are obtained from this plant for the first time.

Artemisia annua ; chemistry ; Chromatography, Gel ; Chromatography, High Pressure Liquid ; Drugs, Chinese Herbal ; chemistry ; isolation & purification ; Flavonoids ; chemistry ; isolation & purification ; Medicine, Chinese Traditional ; Plants, Medicinal ; Quinic Acid ; analogs & derivatives ; chemistry ; isolation & purification ; Silica Gel

Objective To observe the clinical effect of monosialotetrahexosyl ganglioside sodium injection (GM1) on spastic cerebral palsy. Methods 98 children with spastic cerebral palsy were randomly divided into control group (n=50) and treatment group (n=48). Both groups received Bobath approach, and the treatment group received GM1 in addition. They were assessed with Functional Independence Measure for Children (WeeFIM), Gross Motor Function Measure (GMFM) and Gesell Development Schedule (GDS) before and after 90 days of treatment. Results The scores of WeeFIM, all the dimensions of GMFM and the gross motor, fine motor, personal-social and adaption of the GDS improved in both groups after treatment (P<0.05), and improved more in the treatment group than in the control group (P< 0.05). Conclusion GM1 may further improve the recovery of function for children with spastic cerebral palsy.

Abstract: Objective　To analyze the detection of SARS‑CoV‑2 in household environment and public place environment of Huangpu District, and describe the feature of SARS‑CoV‑2 contamination in the environment exposure to the infected cases, so as to support the control strategies such as disinfection and health communication. Methods　The results of RT-PCR test for the environmental samples exposure to the cases infected by SARS‑CoV‑2 during February 1 to March 31 2022 in Huangpu District of Shanghai were collected as the research data. Pearson χ2 was used to test the significance of the differences between positive rates of SARS‑CoV‑2 contamination. Results　From February 1 to March 31, household environment samples had a higher positive rate (6.47%, 234/3 618) of SARS‑CoV‑2 contamination while the public place samples had a lower one (1.22%, 47/3 582) in Huangpu District of Shanghai (χ2=141.908, P<0.01). Among the household buildings, the lane houses of old style representing poorer living condition had the highest positive rates (8.31%, 96/1 155) of SARS‑CoV‑2 contamination while the apartments representing better living condition had the lowest (3.59%, 22/612) (F=5.25，P<0.05). Among the samples from household environment, samples regarding sewerage had the highest positive rates (13.30%,58/436) of SARS‑CoV‑2 contamination, while samples regarding the tool of cooking and sweeping had the lowest (3.10%,17/548) (F=9.84，P<0.01). Among the samples from public place environment, samples regarding entertainment tools had the highest positive rates (13.33%, 2/15) of SARS‑CoV‑2 contamination, while samples regarding the tool of cooking and sweeping had the lowest (0.62%, 4/646) (F=4.22，P<0.01). Conclusion　In the environment exposure to the SARS‑CoV‑2 infected cases, the disinfection, ventilation and cleaning should be intensified strictly. SARS‑CoV‑2's surviving in sewage environment should be evaluation dynamically. More health communication should be pushed to people of poorer living condition.

The reaction conditions of baicalin hydrolyzed into baicalein by a kind of thermophilic and sugar-tolerant beta-glucosidase were studied in this paper. The beta-glucosidase could catalyze baicalin into baicalein well in the acetic acid-sodium acetate buffer. The optimal enzyme activity was at 85 degrees C and pH 5.5. The enzyme was stable at the temperature less than 85 degrees C and pH range of 5-7.5. The maximum reaction rate V. and michaelis constant K. were 0.41 mmol x L(-1) x min(-1) and 3.31 mmol x L(-1) respectively. Different metal ions had different effects on the activity of enzyme. Na+ existing in acetic acid-sodium acetate buffer had an activation effect on enzyme. The enzyme activity was enhanced by the concentrations of glucose below 0.6 mol x L(-1), and was gradually inhibited when monosaccharide concentration was over 0.6 mol x L(-1). When the monosaccharide concentration reached 1.2 mol x L(-1), the inhibition rate of enzyme activity was about 50%, which showed good glucose tolerance. The good reaction conditions through the experiment have been determined as follows, the substrate: enzyme dose was 1 g: 0.2 mL, acetic acid-sodium acetate buffer pH 5.5, reaction temperature 85 degrees C, reaction time 10 h, and the enzymatic hydrolyzation ratio could reach 97%.
Biocatalysis ; Enzyme Stability ; Flavanones ; chemistry ; Flavonoids ; chemistry ; Glucose ; chemistry ; Hot Temperature ; Hydrolysis ; Kinetics ; beta-Glucosidase ; chemistry