Objective To study the acute inhalation toxicity of 50% Luowei,a plant molluscacide,in rats. Methods Twenty adult Wistar rats,half male and half female,were given of 5000 mg/m3 of 50% Luowei through a dynamic inhalation de?vice and the death and recovery of the rats were observed within 14 days,and LC50 was drawn. Results After exposure,the ac?tivities of the rats decreased and a few individual animals had scratching symptom,but the symptom disappeared after the expo?sure. No animals died during the whole observation period. Therefore,the acute inhalation LC50 was greater than 5000 mg/m3 for rats,and Luowei belonged to low toxicity level. Conclusions 50% Luowei will not cause animal death if it is inhaled into ani?mal body. However,people still need to wear protective equipment in production and use.

The current study to separate and identify constituents from Millettia nitida var. hirsutissima. The compounds from Millettia nitida var. hirsutissima were isolated by means of various chromatographic techniques such as column chromatography over ODS and Sephadex LH-20, preparative HPLC, and the structures of these isolated compounds were identified through spectroscopic analyses. Nine isoflavonoids and two flavans were isolated and identified as 5-O-methy genistein (1), 7-hydroxy-3',4'-dimethoxyisoflavone (2), ononin (3), catechin (4), formononetin (5), genistein (6), calycosin (7), (-)-gallocatechin (8), sissotrin (9), wistin (10), daidzin (11). Compounds 1, 2, 9 are obtained from the genus Millettia for the first time,and compounds 4, 8 are isolated from this plant for the first time.
Drugs, Chinese Herbal ; chemistry ; isolation & purification ; Flavones ; chemistry ; isolation & purification ; Isoflavones ; chemistry ; isolation & purification ; Mass Spectrometry ; Millettia ; chemistry ; Molecular Structure

Objective: To investigate the status of physical development, vitamin A and vitamin D among primary and middle school students in poor rural areas in Hubei, to evaluate the implementation effectiveness of the Nutrition Improvement Program for Rural Compulsory Education Students (abbreviated to the program) from 2012 to 2021. Methods: In Enshi City, a pilot monitoring county of the program in Hubei, and a total of 2 554 students from one primary school and one junior middle school were randomly selected. During September to October in 2012-2021, height was measured, and fasting venous blood was collected from students, and serum vitamin A and vitamin D were detected. Results: From 2012 to 2021, height, serum vitamin A and serum vitamin D concentration increased by 2.7 cm, 96.7 μg/L and 8.6 ng/mL. Growth retardation rate decreased by 1.0%. The subclinical and clinical deficiency of serum vitamin A decreased by 37.3% and 6.2%. The subclinical and clinical deficiency of serum vitamin D decreased by 45.7% and 8.5%. Height was positively correlated with serum vitamin A status and negatively correlated with serum vitamin D status ( r =0.08,-0.08, P <0.01). Conclusion The pilot counties of the program in Enshi, has witnessed improvement in height, serum vitamin A and vitamin D status among primary and secondary students. However, future efforts remains essential as subclinical deficiency of vitamin A and vitamin D are noted in some students. Serum vitamin A is positively associated with height, and vitamin D is negatively associated with height.Considering the correlation between serum vitamin A and vitamin D status with height, continued efforts should be implemented in poor rural areasto strengthen targeted nutrition intervention for students in Hubei.

The application of sutureless minimally invasive vitrectomy has been used for more than 10a.High-speed cutting and fine instrumentation have been effective in the treatment of severe vitreoretinal diseases,but intraoperative and postoperative complications have also seriously affected vision recovery,including choroidal detachment is minimally invasive vitrectomy and postoperative relatively rare complications,secondary glaucoma,decreased vision,etc.The reasons and treatment of choroidal detachment during and after minimally invasive vitrectomy are summarized below.

OBJECTIVETo investigate polymorphisms of killer cell immunoglobulin-like receptor gene (KIR) in renal transplant recipients from southern Zhejiang.

METHODSKIR genotypes were analyzed by PCR-SSP in 416 renal transplant recipients, and the genotype frequencies were compared with populations from Eastern China and worldwide.

RESULTSAll 16 known KIR genes were detected in the renal transplant recipients, and KIR2DL4, 3DL2-3, 3PD1 were found in all. As a pseudogene, 2DP1 has a high genotype frequency (99%). The frequencies of KIR2DL1, 2DL3, 3DL1, 2DS4 have ranged from 92.1% to 98.8%. Compared with 11 groups in Eastern China and other countries, the KIR2DL2 phenotype frequency was higher (34.6%) than those of Shanghai, Zhejiang and Jiangsu populations (P<0.05). Among 41 genotypes, three have not been reported previously. The most common genotype was AA1, with a frequency of 43.51%, which was significantly lower than those of Jiangsu and Northern Zhejiang.

CONCLUSIONRenal transplant recipients from southern Zhejiang share similar features with Eastern China Han population with regard to KIR polymorphisms, but also have unique frequencies for KIR genotypes.

Adolescent ; Adult ; Aged ; China ; Female ; Gene Frequency ; Genotype ; Humans ; Kidney Transplantation ; methods ; Male ; Middle Aged ; Polymorphism, Genetic ; Receptors, KIR ; genetics ; Young Adult

To investigate the effects of human anti-BAFF scFv-Fc against the hsBAFF, ICR mice were randomly divided into six groups: control, hsBAFF (1 mg x kg(-1)), hsBAFF (1 mg x kg(-1)) + Ab (1 mg x kg(-1)), hsBAFF (1 mg x kg(-1)) + Ab (2 mg x kg(-1)), hsBAFF (1 mg x kg(-1)) + human IgG (1 mg x kg(-1)) and hsBAFF (1 mg x kg(-1)) + human IgG (2 mg x kg(-1)) groups. The effects of scFv-Fc administration on the proliferation of B lymphocytes were evaluated using an MTT assay. The titres of antibody in the serum and B lymphocytes differentiation were assessed by ELISA and flow cytometry, respectively. The results showed that administration of scFv-Fc to mice injected with hsBAFF significantly prevented human BAFF-induced increases in splenic B cell numbers and serum immunoglobulin levels. Furthermore, this fully human antibody would avoid inducing the human anti-mouse antibody (HAMA) response when used in humans. These findings suggest that the compact antibody may be useful in therapeutic or diagnostic application of the BAFF-associated autoimmune diseases in human.
Animals ; B-Cell Activating Factor ; immunology ; metabolism ; B-Lymphocytes ; cytology ; Body Weight ; Cell Differentiation ; Cell Proliferation ; Cells, Cultured ; Female ; Humans ; Immunoglobulin Fc Fragments ; immunology ; metabolism ; Immunoglobulin G ; blood ; immunology ; Immunoglobulin M ; blood ; Mice ; Mice, Inbred ICR ; Random Allocation ; Recombinant Fusion Proteins ; immunology ; metabolism ; Single-Chain Antibodies ; immunology ; metabolism ; Spleen ; cytology

OBJECTIVETo investigate the constituents of Ervatamia hainanensis systematically.

METHODVarious chromatographic techniques were applied to isolate and purify the constituents of this plant. The structures were elucidated by spectroscopic analysis.

RESULTEight compounds were obtained, which were identified as alpha-amyrin acetate (1), 11-oxo-alpha-amyrin acetate (2), beta-sitosterol (3), cycloart-23-ene-3beta, 25-diol(4), cycloart-25-ene-3beta, 24-diol (5), 5alpha, 8alpha-epidioxyergosta-6, 22-dien-3beta-ol (6), ibogamin-3-one (7), beta-daucosterol (8).

CONCLUSIONCompounds 1, 2, 4- 7 were isolated from this plant for the first time.

Apocynaceae ; chemistry ; Ergosterol ; analogs & derivatives ; chemistry ; isolation & purification ; Oleanolic Acid ; analogs & derivatives ; chemistry ; isolation & purification ; Plant Roots ; chemistry ; Plant Stems ; chemistry ; Plants, Medicinal ; chemistry ; Triterpenes ; chemistry ; isolation & purification

Objective To describe the application of Vapocoolant spray for alleviating pain during intravenous cannulation in foreign countries. Methods We interviewed literature related with Vapocoolant spray for alleviating pain during intravenous cannulation. The databases included China National Knowledge Infrastructure, and Wanfang Data, Web of Science, PubMed. Results It is still controversial that Vapocoolant spray could alleviating pain during intravenous cannulation and there are few studies about Vapocoolant spray in China. Conclusions More high quality randomized controlled studies are needed to provide evidence for the controversy. Provide reference for medical staff with alleviate pain during intravenous cannulation.

Objective To analyze the incidence and predictors of chronic subdural hematoma (CSDH) after surgical clipping between unruptured intracranial aneurysms (UIAs) and ruptured intracranial aneurysms (RIAs).Methods A retrospective cohort study was adopted to collect 486 cases of aneurysm patients (102 cases of UIAs patients and 384 RIAs patients) closed by aneurysm surgery who were admitted to the department of neurosurgery of The Fifth People's Hospital of Chengdu from October 2009 to December 2017.The clinical data,preoperative and postoperative imaging data and postoperative follow-up results were collected.The incidence of CSDH after operation in UIAs patients and RIAs patients was compared.The risk factors of CSDH after UIAs and RIAs patients were analyzed by multivariate Logistic regression model.Results The incidence of CSDH in UIAs and RIAs patients (10.78％ vs 3.13％,x2 =10.487,P =0.001) and the reoperation rate after CSDH (3.92％ vs 0.78％;x2 =5.599,P =0.018) were all statistically different,all of which showed that the patients with UIAs were higher than those of the patients with RIAs.Brain atrophy of grade 3-4 (OR =1.978,95％ CI:1.939-2.030,P ＜ 0.001),subdural effusion CT value ≥40 (OR =3.394,95％ CI:2.908-3.867,P ＜ 0.001) and subdural effusion (OR =2.872,95％ CI:2.648-3.019,P ＜0.001 grade) of Ⅰ B are independent risk factors of CSDH in patients with UIAs after aneurysm clipping (P ＜0.05).Subdural effusion CT value ≥ 40 (OR =3.442,95％ CI:2.918-3.8769,P ＜ 0.001) and grade Ⅰ B subdural effusion (OR =2.329,95％ CI:2.011-2.564,P ＜ 0.001) are independent risk factors for CSDH in patients with RIAs after aneurysm clipping (P ＜0.05).Conclusions The incidence of CSDH after aneurysm clipping in UIAs patients was significantly higher than that of RIAs patients.The risk factors for CSDH in the two groups were not the same.

OBJECTIVETo discuss the application of reverse flap based on two dorsal metacarpal artery for reconstruction of degloved fingertip avulsion.

METHODSFrom Jan. 2005 to Mar. 2008, 28 cases with degloved fingertip avulsion were treated with reverse flaps based on two dorsal metacarpal artery. The defects were located distal to the distant interphalangeal joints and were 0.8-2.2 cm in length. 10 defects was in the index fingers, 13 in the middle fingers and 5 in the ring fingers. 24 fingers were treated in an emergency surgery. 4 fingers were treated due to skin necrosis.

RESULTSEpidermal necrosis happened at the distal end of flaps in 3 cases. All the other flaps survived completely. 25 cases were followed up for 4-27 months with satisfactory cosmetic and functional results. The 2-points discrimination distance was 6.0-9.0 mm (average, 7.6 mm).

CONCLUSIONSThe reverse flap based on two dorsal metacarpal artery is easily performed and reliable for degloved fingertip avulsion with satisfactory results.

Adolescent ; Adult ; Aged ; Child ; Female ; Finger Injuries ; surgery ; Follow-Up Studies ; Humans ; Male ; Middle Aged ; Surgical Flaps ; blood supply ; Treatment Outcome ; Young Adult