Objective To explore the MSCT manifestations of chromophobe renal cell carcinoma (CRCC)and to improve its accu-racy of preoperative diagnose.Methods Clinical and MSCT finding were retrospectively reviewed in 14 patients with CRCC,which were confirmed by surgical pathology or biopsy.Results (1)On plain scanning,most of the CRCC lesions showed round or oval (86.7%,13/1 5)and isodensity (73.3%,1 1/1 5)mass;and the border of 66.7% (10/1 5)lesions were clear.53.3% (8/1 5)of the lesions were heterogeneous with lamellar cystic low density (8 lesions)and coarse ringed and/or foliated calcifications (4 lesions). (2)On contrast-enhanced sacanning,the CRCC lesions showed mild to moderate (86.7%,13/1 5)and heterogeneous (60%,9/1 5) enhancement,and 73.3% (1 1/1 5)of the lesions were persistent enhanced.(3)According to the pathology,80% (12/1 5)of the le-sions was the typical type,20% (3/1 5)was the eosinophilic type,and 0 was the hybrid type.Conclusion CRCC demonstrates cer-tain characteristics signs at MSCT examination.Lesion mostly shows well-circumscribed round or oval mass in the renal parenchy-ma,mild to moderate,heterogeneous and continuous enhancement on the contrast scanning.The diagnosis of CRCC should be con-sidered especially when the lesion has cystic change and coarse ringed and/or foliated calcifications.

Objective To explore the clinical effects and prognostic factors of postoperative radiotherapy for malignant gliomas. Methods From June 1998 to October 2007, seventy-eight cases of malignant gliomas patients were treated with radiotherapy after surgery, including -28 cases received whole brain radiotherapy, 34 cases local field irradiation and 16 cases three-dimensional conformal radiotherapy. Thirty-one cases received chemotherapy which included semustine, semustine plus teniposide and temozolomide. Kaplan-Meier survival analysis and COX regression analysis were used to analyze the prognostic factors. Results The median survival time and 1-, 3-, 5-year survival rate were 16 months, 65.4 %, 32.8 % and 17.9 % for all patients, respectively; 24 months, 72.7 %, 41.5 % and 22.8% for grade 1 patients; 11 months, 47.8 %, 10.9 % and 5.4 % for grade IV patients. Univariate analysis showed the age, Karnofsky, pathologic grade, surgical approach and the time from surgery to radiotherapy were significantly correlated with the survival time (P <0.05). Karnofsky (P =0.000), pathologic grade (P =0.004) and age (P =0.011) were independent prognostic factors in the multivariate analysis. Conclusion Prognosis of the patients with Karnofsky ≥70, age < 50 years and grade Ⅲ is better in malignant gliomas. Postoperative radiotherapy combined with chemotherapy may prolong the survival time.

Objective:To observe the clinical effect of electroacupuncture (EA) plus pricking-cupping bloodletting therapy for herpes zoster.
Methods:A total of 43 patients with herpes zoster were randomly divided into two groups, 23 cases in the treatment group and 20 cases in the control group. The treatment group was given EA plus pricking-cupping bloodletting therapy. The control group was given oral administration of Aciclovir Tablets, Diclofenac Sodium Dual Release Enteric-coated Capsules, Methylcobalamin Dispersible Tablets, and V itamin B12.
Results: The total effective rate was 87.0% in the treatment group and 70.0% in the control group, with a statistical significance in difference of the total effective rate between the two groups (P<0.01).
Conclusion:The clinical effect is better in the treatment of herpes zoster by EA plus pricking-cupping bloodletting therapy than by medications.

Objective: To investigate the protective effect of shenduqing Granules on chronic renal insufficiency in rats. Methods: The rat model of chronic renal insufficiency was made by feeding 0.75% adenine forage. The blood biochemical indexes, ion concentration in serum of rat was measured and the pathological changes of rat kidney were observed. Results: Shenduqing Granules obviously increased thymus index (TI). The weight of rat kidney in the treatment group was lighter than that of the model group. The kidney histomorphological study showed that Shenduqing Granules obvionsly reduce the pathological changes. The drug crystals were also reduced. Conclusion: Shenduqing Granules has the potential protection against chronic renal insufficiency in rats.

AIM　To investigate the antithrobosis effects of glycol mannate sulfate(GMS). METHODS　Vein thrombus was formed in rat by ligating postcava. Thrombus formation in vitro was observed by Chandlers method. Clotting indexes were measure by ACL200 congulation system. RESULTS　GMS dosage of 20、40 mg*kg-1 could inhibit the vein thrombus formation in rats (P<0.01). GMS could inhibit the thrombosis in rabbit, in vivo, and the inhibitory action was enhanced along with the increase of dosage. The CT,TT,CT,APTT,RT and PT were prolonged, and the fibrinogen and the activity of Ⅱ and Ⅱa were decreased. The activity of ATⅢ was enhenced. CONCLUSION　GMS has antithrombotic effect and the mechanism may be related to the anticongulat effect.

Objective To develop a promising type of radiation dosimeter based on doped hydroxyapatite,and to study the stability of dosimetric characteristics indepth.Methods The samples prepared by stereotyping techniques were stored under different temperatures,humidity and illumination conditions after 60Co γ-ray irradiation.Electron spin resonance (ESR) technique was used to quantitatively measure the radiation-induced free radical signal.Results The signal change was less than 3% when the dosimeter was preserved at 4℃ or room temperature within 3 months in the experiment.At 40℃,the signal changed by about 13%,but at room temperature with the humidity less than 36%,the signal changed less than 2%.The change rose to about 8% when humidity was 76%.However,no significant decay of signal strength occurred at relatively high temperatures and under high humidity conditions.When the samples were stored under average illumination of 1600 lux or in a light-resistant container,the signal changes were less than 3.8% or 3.4% respectively.Long-term stability inspection at room temperature suggested a signal change within 4.8%.Conclusion The dosimetric properties of the material don't change significantly below room temperature in a natural environment and exhibit good stability over long-term storage.The free radical signal is not influenced drastically by relatively strong light exposure.However,a high temperature or a highly humid environment may have some effect on the measurement process,which should be taken into consideration in further applications.

OBJECTIVETo study the chemical constituents from Hypericum perforatum.

METHODCompouds were isolated by chromatographic techniques. Their structures were identified by spectral methods. The inhibitory activity of recombinant human PTP1B was evaluated.

RESULTNine compounds were elucidated as D-Mannitol (1), 1,2-benzenedicarboxylic acid bis(1-methylpropyl) ester (2), (7E, 6R,9S)-9-hydroxy-4,7-megastigmadien-3-one (3), (6S,9R)-roseoside (4) , 2,6-dimethoxy-4-hydroquinone-l-O-beta-D-glucopyranoside (5), 2,6-di-methoxy-4-hydroxybenzyl alcohol 1 -O-beta-D-glucopyranoside (6), syringate 4-O-beta-glucopyranoside (7), hypericin (8), skyrin-6-0-beta-D-glucopyranoside (9) , (R)-2,3-dihydroxypropyl 3,4-dihydroxy-benzoate (10). At a concentration of 2 micromol x L(-1), compound 8 inhibited recombinant human PTP1B with inhibitory rate of 96.4% and IC50 of 2.5 micromol x L(-1).

CONCLUSIONcompound 10 was new, compounds 2-4, 7 were obtained from Hypericum for the first time and compounds 5-6 was isolated from this plant for the first time. Compound 8 showed remarkable PTP1B inhibitory activity.

Anthraquinones ; chemistry ; isolation & purification ; Drugs, Chinese Herbal ; chemistry ; isolation & purification ; Glucosides ; chemistry ; isolation & purification ; Hypericum ; chemistry ; Molecular Structure ; Norisoprenoids ; chemistry ; isolation & purification

The chemical constituents of Parthenocissus quinque were investigated. The chemical constituents were isolated by column chromatography on silical gel and sephadex LH-20. Their structures were elucidated on the basis of spectral analysis and of comparison of physical constant. Nine compounds were isolated from this plant and the structures of them were identified as 3,4,5-trihydroxy- benzoic acid (1), piceatannol (2), resveratrol (3), resveratrol trans-dehydrodimer (4), cyphoste mmin B (5), pallidol (6), cyphostemmin A (7), quercetin-3-O-alpha-L-rhamnoside (8), myricetin-3-O-alpha-L-rhamnoside (9), respectively. Compounds 1, 4-9 were isolated from this plant for the first time.
Plant Extracts ; analysis ; isolation & purification ; Vitaceae ; chemistry

The epidemic of coronavirus disease 2019 (COVID-19) puts higher demands on critical care medicine. Lots of studies have been conducted to solve COVID-19-related problems. Therefore, we reviewed the annual progress for COVID-19-related issues including antivirals threapies, respiratory support and immunomodulatory therapies and other critical issues, including the effect of antibiotic on mitochondrial damage and its relationship with sepsis, the goal and direction of antimicrobial de-escalation, drug prophylaxis of constipation, bleeding in gastrointestinal disorders and management of critical illness in the informalization era and so on. We hope to provide reference for clinical and scientific research work of the intensivists.