ABSTRACT
Objective:To evaluate the changes of retinal thickness, choroid thickness and choroid vascular polypoid lesions (polyps) before and after the treatment of conbercept in polypoidal choroidal vasculopathy (PCV) with conbercept based on enhanced-depth imaging optical coherence tomography (EDI-OCT) and OCT angiography (OCTA).Methods:Twenty patients with PCV admitted to the ophthalmology department of the Affiliated Hospital of Traditional Chinese Medicine of Xinjiang Medical University from January 2019 to December 2020 (who had not received intravitreous injection before) were selected and given intravitreous injection of conbercept with 3+ pro re nata (PRN) treatment. The changes of visual acuity, intraocular pressure, central macular thickness (CMT), subfoveal choroidal thickness (SFCT), peripapillary choroid thickness (PCT), polyps height, and maximum cross-sectional area of polyps were observed before and after treatment.Results:There were significant difference in the best corrected visual acuity (BCVA), CMT, SFCT, PCT, polyps height and maximum polyps cross-sectional area before and after treatment in 20 patients (all P<0.05). BCVA was significantly improved at 1 week and 1 month after treatment (all P<0.05), and still improved at 6 months after treatment, but the difference was not statistically significant compared with 3 months after treatment ( P>0.05), and slightly fluctuated at 6 to 12 months after treatment, but basically stable. CMT, SFCT and PCT decreased significantly after 3 months of treatment, and were basically stable from 6 to 12 months after treatment. One month after treatment, polyps height was (251.30±57.49)μm, with a decrease of 11.3 μm; the polyps height decreased at 3, 6 and 12 months after treatment, and the difference was statistically significant (all P<0.05). The maximum cross-sectional area of polyps at 3 and 12 months after treatment was (2.10±0.44)μm 2 and (1.98±0.44)μm 2, respectively, with a certain degree of decrease, and the difference was statistically significant (all P<0.05). Conclusions:Intraocular injection of conbercept can effectively reduce CMT, SFCT, PCT, polyps height, maximum cross-sectional area of polyps and increase BCVA in PCV patients 3 months after treatment. EDI-OCT and OCTA were used to quantitatively detect the changes of PCV indexes and observe the curative effect and prognosis.
ABSTRACT
Objective:To examine the risk factors for neuropathic pain (NP) after a spinal cord injury (SCI).Methods:A total of 115 patients with a SCI were analyzed retrospectively. They were divided into an NP group of 53 and a non-NP group of 62 according to the occurrence of NP. Gender, age, length of stay, occupation, level of education, cause of injury, spinal fracture, degree of SCI, the injury′s plane and complications at admission (diabetes, hypertension, anemia, venous thrombosis, pressure sores, urinary tract infection or hypoproteinemia) were recorded. T-tests and chi-squared tests were used to compare those factors between the two groups, and multivariate logistic regressions were evaluated to identify the risk factors for NP.Results:Twenty-three of the 53 cases of NP (43%) had developed within 1 month of the SCI. Thirty-seven (75%) experienced pain below the plane of the SCI. The main features reported were squeezing (34%) and numbness (26%). The multivariate logistic regression showed that the occurrence of NP was most strongly related to gender (women being particularly at risk) and venous thrombosis at admission.Conclusions:Women are at particular risk of feeling NP after an SCI, and venous thrombosis is an independent risk factor. NP should be diagnosed and treated quickly to reduce the negative impact on patients′ life quality.
ABSTRACT
Eosinophilic esophagitis (EoE) is a recently recognized esophageal inflammatory disease with clinical manifestations arising from esophageal dysfunction. The etiology of EoE is currently being clarified and food allergy is evolving as the central cornerstone of EoE disease pathogenesis. Given the large number of eosinophils in the esophagus of people with EoE verified by data from murine models EoE is widely considered as the hallmark T-helper type 2 (Th2) disease of the esophagus. It is also known that some eosinophilic inflammation is controlled by other subsets of T cells such as Th9 or Th17 and control is also exerted by type 2 innate lymphoid cells acting together with basophils. In this paper we review results from molecular studies of mouse models in light of the results from the first clinical trials targeting key cytokines in humans and present in-depth molecular understanding of EoE.
Subject(s)
Animals , Humans , Mice , Basophils , Cytokines , Eosinophilic Esophagitis , Eosinophils , Esophagus , Food Hypersensitivity , Inflammation , Lymphocytes , T-LymphocytesABSTRACT
Objective To investigate the clinical efficacy of piracetam combined with edaravone in the treatment of patients with acute cerebral infarction.Methods 120 patients with acute cerebral infarction were selected,and they were randomly divided into control group and observation group according to the digital table,60 cases in each group.The patients in both two groups were treated with mannitol to reduce intracranial pressure,aspirin antiplatelet aggregation,combined with basic nutritional support,active prevention and treatment of complications.The control group was intravenously given piracetam.On this basis,the observation group was intravenously given edaravone injection.Both two groups were treated for 14 days.The clinical curative effect,neurological deficit and self-care ability score before and after treatment were observed,and the indicators of hemorheology before and after treatment were observed.Results Mter treatment,the neurological deficit and self-care ability scores of the two groups were significantly improved(t =3.43,4.12,5.67,6.89,all P ＜ 0.05),the improvements of the observation group were significantly better than those of the control group(t =2.10,4.21,all P ＜ 0.05).The total effective rate of the observation group was 85.00％,which was higher than 70.00％ of the control group,the difference was statistically significant (x2 =4.11,P ＜ 0.05).After treatment,the indicators of hemorheology of the two groups were significantly improved (t =1.43,2.98,2.32,4.56,1.67,2.11,1.46,1.98,all P ＜ 0.05),and the improvements of the observation group were significantly better than those of the control group (t =1.46,2.32,1.67,1.39,all P ＜ 0.05).Conclusion Piracetam combined with edaravone can significantly improve the neurological function,cognitive function and hemorheology of patients with acute cerebral infarction.
ABSTRACT
The basic principles of medical ethics included respect and autonomy,beneficial and nonmaleficence,informed consent and confidentiality,impartiality and mutual assistance.During medical journal editing,medical ethics principles should be strictly applied.Focused on two types of medical thesis,medical scientific research and clinical trials,this paper concluded the ethics issues related to experimental animals,cells and gene researches,all these should be noticed in manuscripts.Meanwhile,this paper analyzed the ethics principles about contrast set and the use of placebo that should be abided in clinical trial,and the respects of patients'privacy during clinical observation,etc.Some review key points were put forward from the perspective of editors.
ABSTRACT
<p><b>OBJECTIVE</b>To prepare nanofibrous membranes of poly (vinyl alcohol)/chitosan (PVA/CS) loaded with varied salvianic acid A sodium (SAS) contents.</p><p><b>METHODS</b>Ultrafine fiber mats were prepared with PVA/CS as matrix and SAS as model drug. The structure and morphology of the nanofibrous membranes were characterized by FT-IR and SEM. Drug-loading amount and drug release profiles of these membranes were determined by UV VIS spectra, and the degradation of the membranes was also investigated.</p><p><b>RESULTS</b>Average diameters of PVA/CS/SAS nanofibers with different SAS contents were 280 ≊390 nm. Drug-loading amount of these nanofibrous membranes was high and exhibited sustained and controlled release behavior for SAS.</p><p><b>CONCLUSION</b>The PVA/CS/SAS nanofibrous membrane prepared in this study loads drug uniformly and has remarkably sustained release behavior, which may offer strategies for the research and development of novel topical drug delivery systems.</p>
Subject(s)
Chitosan , Drug Carriers , Membranes, Artificial , Nanofibers , Polyvinyl AlcoholABSTRACT
Attention deficit hyperactivity disorder(ADHD) is one of the most common psychiatric illness in children. The symptoms in ADHD are inatention, hyperactivity and impulsivity.It interferes with many areas, such as family life, personal achievement and relationship ability.There have been no objective methods to diagnose ADHD and evaluate the treatment effect by far.EEG can reflect brain function non-invasively.This review summarizes the progresses of quantitative electroencephalography in ADHD.
ABSTRACT
Objective To know the present status of the clean operating rooms in some hospitals in Shanxi province. Methods 8 indices including clean efficiency of newly built operating room were monitored during 2005-2006. Results The results showed that the overall eligible rate was 67.3%, of which the eligible rate of wind speed(air change rate)was 68.2%, humidity was 61.4%, suspend particle was 94.5%, noise was 95.5%, illuminance was 100%, temperature was 100%, differential pressure was100%, airborne bacterial was 100%, depositing bacterial was 100%. Conclusion In operating rooms, the eligible rate of biological indices is the highest and the eligible rate of purification is lower. The eligible rate of technology indices is the lowest.
ABSTRACT
OBJECTIVE: To compare the acute toxicity of common injection and sustained-release preparation of norcantharidin for mice so as to identify the attenuation of the sustained-release preparation of norcantharidin. METHODS: The poloxamer 407 was used as a sustained-release vehicle for topical administration of norcantharidin, and the acute toxicity of mice treated with common injection and sustained-release preparation of norcantharidin was observed. The median lethal dose (LD(50)) was calculated by Bliss software. RESULTS: The symptoms of mice were similar between the two groups, but the appearance of symptoms in norcantharidin/poloxamer 407 group was 4 hours later than that in norcantharidin group. The LD(50) of norcantharidin administered through vein injection was 12.6 mg/kg. The LD(50) of norcantharidin/poloxamer 407 administered through intraperitoneal injection, intrahepatic injection and intramuscular injection were 19.9, 19.1 and 20.9 mg/kg, respectively, and the LD(50) of the common preparation were 13.0, 13.1 and 15.1 mg/kg, respectively. CONCLUSION: The norcantharidin/poloxamer 407 is less toxic than the equivalent dose of norcantharidin, mainly because norcantharidin/poloxamer 407 may release norcantharidin sustainedly, thus reducing norcantharidin concentration in blood.
ABSTRACT
OBJECTIVE: To establish a multidrug-resistant cell line BEL-7402/5-FU of hepatocellular carcinoma (HCC). METHODS: BEL-7402/5-FU was induced by pulse therapy combined with continuous stepwise exposure to 5-fluorouracil in vitro. MTT assay was used to determine its multidrug resistance (MDR). Biological characteristics of the BEL-7402/5-FU cell line were observed including morphological changes, cell growth curve, population doubling time, plate cloning efficiency, adherence rate, cell cycle distribution, chromosome and tumorigenicity. Accumulation amount of adriamycin (ADM) in cytoplasm was measured by flow cytometry. The protein expression of thymidylate synthase (TS) was evaluated by immuno-cytochemical method. RESULTS: The acquired MDR cell line of BEL-7402/5-FU was established successfully. The BEL-7402/5-FU cells showed cross-resistance to ADM, vincristine (VCR), methotrexate (MTX) and oxaliplatin (OHP), whereas still sensitive to hydroxycamptothecin (HCPT). The BEL-7402/5-FU cells tended to grow in clusters in vitro. It was found that the population doubling time of BEL-7402/5-FU cells was longer than that of its parental cells. The plate cloning efficiency and the adherence rate of BEL-7402/5-FU cells at the 2nd and 3rd hour were both lower than those of the parental cells. The distributing proportion of BEL-7402/5-FU cells in G(0)/G(1) phase was less than that of the parental cells, whereas the distributing proportion of BEL-7402/5-FU cells in S phase was higher than that of the parental cells. The accumulation amount of ADM in cytoplasm of BEL-7402/5-FU cells was significantly lower while the expression level of TS protein of which was highly up-regulated as compared with those of the parental cells. CONCLUSION: Establishment of the human HCC cell line BEL-7402/5-FU might be beneficial to the studies of 5-Fluorouracil acquired MDR mechanisms and the selection of reversal modifiers.
ABSTRACT
OBJECTIVE: To study the feasibility of the establishment of the orthotopic transplantation tumor model of hepatocellular carcinoma in mice and its tumor biological characteristics. METHODS: H22 cells of hepatocellular carcinoma were inoculated to form ectopic transplanted model in mice by subcutaneous injection. Then the subcutaneous tumors were implanted into the liver of mice, and the orthotopic transplantation tumor model of hepatocellular carcinoma was established. RESULTS: The successful rate of the orthotopic transplantation tumor model was 95.6% and the spontaneous metastatic rate was 81.8%, the rate of mass ascites was 40.9% and the natural extinctive rate was 0%. The natural survival time in the orthotopic transplantation tumor model was 28 days and the proliferation of tumor in transplanted model was accelerated after 2 weeks or so. CONCLUSION: The orthotopic transplantation tumor model in mice is an ideal model for studying the metastatic mechanism and screening anti-tumor drugs for liver cancer, just because of its high successful rate and high spontaneous metastatic rate with no natural extinction.
ABSTRACT
Object To establish a SDS PAGE method on quality control of melittin. Methods Melittin was extracted and purified from bee venom by gel chromatography. Purity and molecular mass of melittin were determined by SDS PAGE. Results In the gelatinous board, the sample was a single peptide chain with a molecular mass of about 2 800 dalton as revealed by SDS PAGE. The purity was (90 59?0 85)%, which was in parallel with the result tested by HPLC. Conclusion SDS PAGE is accurate, reliable and simple for the determination of melittin.
ABSTRACT
Objective To study the reversal effect on acquired multidrug resistance (MDR) of human hepatocellular caricinoma (HCC) by Ganli Injection. Methods Proliferative inhibition rate of HCC BEL-7402/5-Fu cell line and reversal index of 5-Fu acquired MDR were measured by MTT assay. Cell morphological changes were observed under inverted microscope and Wright-Giemsa stain method. Fluorescence intensity of Adriamycin (ADM) was detected by Flow cytometry. Results HCC BEL-7402/5-Fu cell line exhibited cross-resistance to general chemotherapeutics in clinic. Proliferative inhibition rates of HCC BEL-7402/5-Fu cell line treated for 72 h by Ganli Injection at the (matrine) concentration of 0.230, 0.115, 0.058 mg/mL were (9.25?2.38)%, (8.46?1.90)%, and (4.23?2.05)%, respectively. The corresponding reversal indexes to 5-Fu were 5.50, 3.83, and 2.25. Pre-treatment of Galli Injection at the concentration of 0.230 mg/mL for 2 h could increase the accumulation of ADM in cells to 38.61%.Conclusion Ganli Injection has the effect on reversing 5-Fu acquired MDR of human hepatocellular carcinoma in vitro.
ABSTRACT
Objective: To determinate the content of bufalin,resibufogenin and cinobufagin in Cinobufacini Injection. Methods: Liposoluble components in cinobufacini were extracted with ethyl acetate and determined by HPLC using a C 18 column, acetonitrile water(50∶50) as a mobile phase and UV detection wavelength at 299nm. Results: The method showed the good resolution, high sensitivity, satisfactory accuracy and specificity. Quantitatively analyze results showed that the concentration of bufalin, cinobufagin and resibufogenin in Cinobufacini Injection were 0.333 ?g?mL -1 , 0.159?g?mL -1 and 0.110?g?mL -1 , respectively. Conclusion: Bufalin in Cinobufacini Injection reached effective concentration, which was regarded as one of anti cancer components.