Acute Disease ; Adult ; Aged ; Aneurysm, Dissecting ; complications ; Aortic Aneurysm, Thoracic ; complications ; Coronary Artery Bypass ; Coronary Artery Disease ; surgery ; Female ; Humans ; Male ; Middle Aged

OBJECTIVETo establish quality standard of Zhuang medicine Lonicera dasystyla, and provide scientific basis for the quality control of L. dasystyla.

METHODCharacteristics of materia medica, microscopic features, TLC indentification, inspection, extractum and determination of chlorogenic acid, macranthoidin B, dipsacoside B were carried out through the experience, microscopic, physical and chemical methods, respectively. The standard of quality control was formulated thereafter.

RESULTThe characteristics of materia medica, microscopic features, TLC indentification were specified, the average contents of water, total ash, acid-insoluble ash, alcohol-soluble extracts, chlorogenic acid were 11.6%, 6.6%, 0.2% , 24.4%, 1.16%, respectively, the total amount of macranthoidin B and dipsacoside B was 3.13%. Quality standard of L. dasystyla was proposed according to experimental results.

CONCLUSIONThe quality of L. dasystyla can be controlled effectively with the quality standard.

Chlorogenic Acid ; analysis ; isolation & purification ; Chromatography, Thin Layer ; Drugs, Chinese Herbal ; chemistry ; standards ; Lonicera ; chemistry ; Oleanolic Acid ; analogs & derivatives ; analysis ; isolation & purification ; Quality Control ; Saponins ; analysis ; isolation & purification ; Solubility

The aim of the research is to investigate the genetic characteristics of Legionella pneumophila serogroup1 (LP1)in Sichuan Province.The sequence-based typing (SBT) and multiple-locus VNTR analysis (MLVA) were used to describe the genetic polymorphism of 42 strains which were isolated from 1989-2016 in Sichuan Province,China.According to the reference,PCR was used to detect the 8-VNTR loci and 7 housekeeping genes respectively.The VNTR results were determined by using capillary electrophoresis,and the SBT results were sequenced and compared with the database of EWGLI.Results showed that totally 42 stains were divided into 8 MLVA types with the advantage types were M08 (47.6 ％) and M07 (23.8 ％).Twelve ST types were obtained with 3 main clonal complex and 2 singleton,including 2 novel ST types,among those,ST1 was the predominant type,accounting for 52.3 ％,following by ST630 (14.2 ％).In conclusion,our results demonstrated MLVA and SBT were both applied to the research for molecular epidemiological investigation of LP1 and showed the high genetic polymorphism and the regional specificity.The results also suggest that the isolates are a potential threat to the public,effective control and prevention strategies are urgently needed.

OBJECTIVETo explore the relation between the positive rates of autoantibodies against beta(1) adrenergic receptor (beta1-receptor)and (M2-receptor) with urinary albumin excretion rate (UAER) in type 2 diabetes patients with refractory hypertension.

METHODSAutoantibodies against beta(1)- and M(2)-receptor as well as autoantibodies were determined in type 2 diabetes patients with (n = 136) or without (n = 111) refractory hypertension, hypertensive patients without renal failure (n = 60) and healthy control subjects (n = 40, control) by ELISA.

RESULTSThe positive rates of the autoantibodies against beta1-receptors (44.9%) and M(2)-receptor (37.5%) in patients with type 2 diabetes with refractory hypertension were significantly higher than those in patients with type 2 diabetes without refractory hypertension (27.9% and 24.3%, respectively, all P < 0.05), in patients with hypertension without renal failure (11.7% and 15.0%, all P < 0.01) and in healthy controls (8.3% and 7.5%, all P < 0.01). In type 2 diabetes patients with refractory hypertension and renal failure (UAER > or = 200 microg/min), the positive rates of the autoantibodies against beta(1)-receptor (87.1%, 27/31) and against M(2)-receptor (67.7%, 21/31) were significantly higher than those in type 2 diabetes patients with refractory hypertension but without renal failure (UAER 20 - 199 microg /min, 46.7%, 28/60 and 41.7%, 25/60, respectively, all P < 0.05).

CONCLUSIONThe serum beta(1)- and M (2)-receptor autoantibodies are positively associated with the UAER level and suggest that these autoantibodies against beta(1) and M(2)-receptor may play important roles in the pathogenesis of the type 2 diabetes with refractory hypertension.

Aged ; Albuminuria ; etiology ; Autoantibodies ; analysis ; Diabetes Mellitus, Type 2 ; complications ; immunology ; Female ; Humans ; Hypertension ; complications ; immunology ; Male ; Middle Aged ; Receptor, Muscarinic M2 ; immunology ; Receptors, Adrenergic, beta-1 ; immunology

OBJECTIVETo explore the role of the autoantibodies against M(2)-muscarinic receptor (M(2)-receptor), beta(1)-adrenergic receptor (beta(1)-receptor) in the development of diabetic with refractory hypertension.

METHODSSerum autoantibodies against M(2) and beta(1) were detected by ELISA using synthesized epitopes of the second extracellular loop of M(2) receptor (169 - 193) and beta(1) receptor (197 - 222) in healthy controls (n = 40), diabetic patients (n = 62), diabetic patients with non-refractory hypertension (n = 55) and diabetic patients with refractory hypertension (n = 81).

RESULTSThe positive rates of the autoantibodies against M(2) receptor and beta(1) receptor were similar among healthy controls (15.0% and 17. 5%), diabetes mellitus patients (17.7% and 14.5%) and diabetic patients with non-refractory hypertension (16.4% and 12.7%) but are significantly higher in diabetic patients with refractory hypertension (64.2% and 55.6%, P < 0.01 vs. other 3 groups).

CONCLUSIONThis finding suggests that autoimmune mechanisms might play a role in the pathogenesis of diabetic patients with refractory hypertension.

Adult ; Autoantibodies ; blood ; Diabetes Mellitus, Type 2 ; blood ; complications ; Female ; Humans ; Hypertension ; blood ; complications ; Male ; Middle Aged ; Receptor, Muscarinic M2 ; immunology ; Receptors, Adrenergic, beta-1 ; immunology

OBJECTIVETo investigate the role of sho-saiko-to compound (SSTC) on the growth of the well-differentiated squamous cell line 1 of nasopharyngeal carcinoma (CNE-1) and well-differentiated CNE-2 in tumor-bearing nude mouse, and try to supply scientific data for its clinical development.

METHODSSTC were prepared by concentration gradients, and the effect of SSTC on the growth and proliferation of the CNE-1 and CNE-2 were investigated by MT assay and soft-agar colony formation test. After setting up the subcutaneous tumor-bearing nude mouse model at the right lower back (0.2 mL CNE-2 cell suspension, 5 x 10(5)/mL), we randomly divided forty mice into 5 groups and gave high, middle and low concentration groups of SSTC (0.5, 0.25, 0.125 g X mL(-1) by intragastric administration. Positive and negative groups were set up for comparison. After constant administration for 15 days, the volume and weight of the tumor were measured for inhibition rate, so as to investigate the role of SSTC on the CNE-2 bearing tumor.

RESULTIn vitro, compared with negative control, SSTC at different gradient concentrations were cultured with the CNE-1 and CNE-2 for 24 h, 48 h and 72 h. It showed that the growth and proliferation of both cell lines were inhibited to some extent. The inhibition rate was increased as the concentration and culture time increasing. Both MTT assay and soft-agar colony formation test showed that the 50% inhibiting concentration (IC50) was about 2.5 g X L(-1). In vivo, compared with negative control, the SSTC could slow down the tumor growth in the SSTC treated groups. The tumor growth of the negative control group (0.76 +/- 0.28) g, (962.88 +/- 245.96) mm3 and the low concentration group of SSTC (0.88 +/- 0.40) g, (1239.66 +/- 421.93) mm3 were obviously faster than those of the high, middle concentration group of SSTC (0.22 +/- 0.14) g, (239.31 +/- 137.07) mm3; (0.20 +/- 0.16) g, (263.42 +/- 166.57) mm3 and CTX positive control group (0.20 +/- 0.10) g, (246.72 +/- 194.6) mm3 (P<0.05).

CONCLUSIONSSTC could efficiently inhibit the growth and proliferation of CNE-1 and CNE-2 in vitro, and slow down the tumor growth of the CNE-2 bearing nude mice. It may be a new compound of Chinese medicine for nasopharyngeal carcinoma therapy.

Animals ; Carcinoma ; drug therapy ; Drugs, Chinese Herbal ; pharmacology ; Female ; Humans ; Male ; Mice ; Mice, Nude ; Nasopharyngeal Neoplasms ; drug therapy ; Transplantation, Heterologous

Objective:To investigate the risk factors and prognoses of cerebral venous sinus thrombosis (CVST) caused by pegasparaginase (PEG-Asp).Methods:A total of 252 children with acute lymphoblastic leukemia (ALL) were treated with PEG-Asp chemotherapy in our hospital from December 2016 to July 2021, including 8 children with CVST. The clinical manifestations, laboratory and imaging features, treatments and prognoses of these children with CVST caused by PEG-Asp were analyzed retrospectively.Results:(1) CVST occurred during induction chemotherapy in 4 children, during re-induction chemotherapy in 3 children, and during consolidation stage in one child. CVST occurred in two children who received PEG-ASP chemotherapy once, in one child who received PEG-Asp chemotherapy twice, and 5 children who received PEG-Asp chemotherapy more than twice. The median time between CVST occurrence and last treatment of PEG-Asp was 20.5 d. (2) The clinical manifestations included paroxysmal headache ( n=4), nausea or vomiting ( n=3), convulsions ( n=2) and persistent blurred vision ( n=1). (3) CVST appeared at the sigmoid sinus ( n=6), transverse sinus ( n=4) and superior sagittal sinus ( n=4), of which one child was complicated with hemorrhage in left frontal parietal and right parietal cortex, and one with reversible posterior encephalopathy syndrome; 8 children were not complicated with thrombus in other parts. (4) Some of the children were complicated with abnormal blood coagulation. When CVST occurred, fibrinogen level decreased in 3 children, anti-thrombin III level decreased in 2 children, and D-dimer level increased in 3 children. (5) Six children were treated with low molecular weight heparin (LMWH), of which, 4 were treated with rivasaban and one with warfarin sequentially. The total course of anticoagulation was 56 d. (6) The symptoms of 6 children disappeared after anticoagulation; Magnetic resonance venography (MRV) showed disappeared thrombus in 4 children and reduced thrombus range in 2 children. One child with intracranial hemorrhage did not use PEG-Asp anymore; 7 accepted PEG-Asp further during follow-up chemotherapy, of which one had CVST recurrence and the range of thrombus was reduced after anticoagulant therapy. Conclusions:When children with ALL develop unexplained neurological symptoms during PEG-Asp chemotherapy, CVST should be highly vigilant. Enhanced MRI and MRV should be performed for early diagnosis. Some children are complicated with abnormal blood coagulation, and LMWH, warfarin and rivasaban are effective. The prognosis is good and there are no sequelae. Most children accepted PEG-Asp again will not have CVST again.

OBJECTIVETo observe the positive rates of autoantibodies against beta1 adrenergic receptors (beta1-receptor) and angiotensin II type 1 receptors (AT(1)-receptor) in type 2 diabetes patients with or without hypertension.

METHODSThe epitopes of the second extracellular loop of beta1-receptor (197 - 222) and AT(1) receptor (165 - 191) were synthesized and serum autoantibodies were determined in type 2 diabetes patients with hypertension (n = 171) or without hypertension (n = 106). Left ventricular dimension was determined by echocardiography. The 24-hour urinary protein was measured by ELISA. The risk factors for enlarged left ventricle were analyzed by multiple logistic regressions.

RESULTSThe positive rates of the autoantibodies against beta1-receptors (45.0%) and AT(1)-receptor (46.2%) in patients with type 2 diabetes with hypertension were significantly higher than those in patients with type 2 diabetes without hypertension (16.0% and 10.4%, respectively, all P < 0.01). In type 2 diabetes patients with hypertension and enlarged left ventricle, the positive rates of the autoantibodies against beta1-receptor 61.4% (35/57) and against AT(1)-receptor 64.9% (37/57)were significantly higher than those in type 2 diabetes patients with normal left ventricular dimension (36.8%, 42/114 and 36.8%, 42/114, respectively, all P < 0.01). Regression analysis demonstrated that course of disease, systolic pressure, serum autoantibodies against beta1 adrenergic receptor and angiotensin II type 1 receptors sera autoantibodies were independent risk factors for left ventricular enlargement (all P < 0.05).

CONCLUSIONThe serum beta1 and AT(1)-receptor autoantibodies are related to enlarged left ventricle in type 2 diabetes patients with hypertension and suggest that autoantibodies against beta1 and AT(1)-receptor might play important roles in the pathogenesis of type 2 diabetes patients with hypertension and enlarged left ventricle.

Aged ; Autoantibodies ; blood ; Diabetes Mellitus, Type 2 ; complications ; immunology ; Female ; Humans ; Hypertrophy, Left Ventricular ; complications ; immunology ; Male ; Middle Aged ; Receptor, Angiotensin, Type 1 ; immunology ; Receptors, Adrenergic, beta-1 ; immunology

Animals ; Hydrogen Sulfide ; metabolism ; Hypertension, Portal ; metabolism ; physiopathology ; Male ; Rats ; Rats, Sprague-Dawley

OBJECTIVETo determine whether 3'phosphorothioate-modified-2 terminal mismatched primers can turn off DNA polymerization mediated by Exo(+) polymerase.

METHODSTwo-directional primer extension was performed using polymerase with and without 3' exonuclease activity. The effects of unmodified primers and 3' phosphorothioate-modified primers on primer extension were evaluated.

RESULTSExo(-) polymerase yielded products from matched and mismatched primers regardless of their modification. However, 3' phosphorothioate-modified primers with a single base mismatch at -2 position worked similarly to the terminal (-1) mismatched primers in triggering the novelly reported "off-switch" of Exo(+) polymerase.

CONCLUSIONThese data suggested that the "off-switch" can be of enormous application in the diagnosis of single gene diseases and in the association studies by single nucleotide polymorphism screening.

DNA Primers ; chemistry ; genetics ; Exonucleases ; metabolism ; Humans ; Phosphorothioate Oligonucleotides ; chemistry ; genetics ; Polymerase Chain Reaction ; Polymorphism, Single Nucleotide