Background Research demonstrated that alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid GluR2 (AMPA-GluR2) is associated with amblyopia.It has been shown that levodopa and cytidine diphosphate choline can improve visual function of amblyopic children,but the mechanism is unclear.Objective This study was to explore the possible effects of levodopa and cytidine diphosphate choline on amblyopia.Methods Monocular deprivation (MD) animal models were created in 60 2-week-old SD rats by monolateral eyelid suturing and observed for 31 days and reared in natural light together with 15 other matched normal healthy SD rats.The models were randomly divided into the MD group,levodopa group,cytidine diphosphate choline group and normal saline control group,with 15 rats for each group.40 mg/kg of levodopa,80 mg/kg of cytidine diphosphate choline,I ml normal saline were given to the rats,respectively,for 28 consecutive days.Expressions of the AMPA-CluR2 protein and AMPA-CluR2 mRNA in the rat visual cortex were detected by immunohistochemistry,Western blot and real-time fluorescence quantitative PCR.Use of the animals followed the Regulations for the Administration of Affairs Concerning Experimental Animals by State Science and Technology Commission.Results The expression values of the AMPA-GluR2 protein (AMPA-GluR2/β-actin) and AMPA-GluR2 mRNA (2-△△Ct) were significantly lower in the MD group than those of the normal control group (protein:0.32 ± 0.02 vs.0.64 ± 0.05,t =13.287,P＜0.05 ;mRNA:0.30±0.01 vs.0.84±0.03,t=38.184,P＜0.05).Those in the levodopa group were significantly increased in comparison with the normal saline solution group (protein:0.59 ±0.04 vs.0.33 ±0.03,t =11.628,P＜0.05 ; mRNA:0.71±0.06 vs.0.33 ±0.02,t =13.435,P＜0.05).The expression values of the AMPA-GluR2 protein and AMPA-GluR2 mRNA were significantly increased in the cytidine diphosphate choline group compared with the normal saline solution group (protein:0.52 ± 0.04 vs.0.33 ± 0.03,t =8.497,P ＜ 0.05 ; mRNA:0.48± 0.04 vs.0.33 ± 0.02,t =7.500,P＜0.05).Conclusions AMPA-GluR2 is associated with the plasticity of visual development.Levodopa and cytidine diphosphate choline may improve visual function by down-regulating the expression of AMPA-GluR2 in the visual cortex.

AIMTo investigate the relationship between the spatial learning and memory and hippocampal ERK1/2 pathway activity in ovariectomized rats.

METHODSFemale SD rats were randomly divided into sham operated group (Sham group) and ovariectomized group (OVX group), and fed 4 months. Then spatial learning and memory of rats were evaluated by the Morris water maze task. Rats in each group were randomly divided into training group and untraining group before the test. Induced activity of ERK 1/2 stimulated by learning and memory was detected in the training group, and basic activity of ERK 1/2 was detected in the untraining group. The protein expression of p-ERK 1/2 and Raf kinase inhibitor protein (RKIP) were assayed by Western blotting respectively.

RESULTS(1) During the training session the OVX rats held longer escape latenci than the sham rats did (P < 0.05). (2) The relative level of pERK1/2 protein in training rats of the both groups was higher than that in untraining rats (P < 0.05). (3) The relative level of p-ERK1/2 protein both training and untraining rats in OVX group was lower than that in sham group correspondingly (P < 0.05). (4) Compared with sham group, the relative expression of RKIP in OVX group was significantly higher (P < 0.05).

CONCLUSIONSpatial learning and memory deficits in ovariectomized rats might be correlated with the decreased basic and induced activity of ERK1/2 pathway and increased expression of RKIP in the CA1/CA2 region of hippocampus.

Animals ; Extracellular Signal-Regulated MAP Kinases ; metabolism ; Female ; Hippocampus ; physiology ; Learning ; physiology ; MAP Kinase Signaling System ; physiology ; Memory ; physiology ; Ovariectomy ; Phosphatidylethanolamine Binding Protein ; metabolism ; Random Allocation ; Rats ; Rats, Sprague-Dawley

The aim of this study was to investigate the circulating levels of IL-11 in the patients with chronic idiopathic thrombocytopenic purpura (CITP), and its significance, and to evaluate the curative effect of rhIL-11 on CITP. The level of IL-11 in patients with CITP was determined by ELISA before and after treatment, respectively. 1.5 mg of rhIL-11 were injected subcutaneously, once a day, continuously for 14 days as one course, treatment time 1 - 2 courses as total. The results showed that the higher blood IL-11 level was found in CITP patients than that in controls (P < 0.01) and during the course of treatment the number of platelets in peripheral blood of patients with CITP parallelled to the level of IL-11. The platelet counts were obviously increased in all CITP patients after rhIL-11 treatment. It is concluded that the serum level of IL-11 in patients is correlated to the number of platelets in patients. rhIL-11 can be used as an effective treatment for CITP.
Adolescent ; Adult ; Aged ; Chronic Disease ; Female ; Humans ; Interleukin-11 ; blood ; therapeutic use ; Male ; Middle Aged ; Platelet Count ; Purpura, Thrombocytopenic, Idiopathic ; drug therapy ; Recombinant Proteins ; therapeutic use ; Treatment Outcome

OBJECTIVETo evaluate the safety of human umbilical cord derived-mesenchymal stem cell (UC-MSC) transplantation therapy in patients with decompensated liver cirrhosis.

METHODSUC-MSCs were transplanted intravenously into patients with decompensated liver cirrhosis. Serum levels of glucose (GLU), total cholesterol (TC), blood urea nitrogen (BUN), alpha fetoprotein (AFP), white blood cells (WBC), and prothrombin activity (PA) were detected at different time points after UC-MSCs transplantation.

RESULTSMost UC-MSC transplanted patients experienced an improvement in quality of life, to varying degrees. With the exception of low-grade fever in a few patients, side effects and oncogenic events were rare (treatment group: 1/38 vs. control group: 1/16; P more than 0.05). The UC-MSCs transplantation showed no effect on GLU, TC, BUN, AFP, WBC, or PA.

CONCLUSIONUC-MSCs transplantation in patients with decompensated liver cirrhosis is safe and may improve the patient's quality of life.

Adult ; Aged ; Cord Blood Stem Cell Transplantation ; adverse effects ; Female ; Humans ; Liver Cirrhosis ; complications ; surgery ; Male ; Mesenchymal Stem Cell Transplantation ; adverse effects ; Middle Aged ; Prospective Studies

BACKGROUNDAcute gout is an intensely painful, inflammatory arthritis. Although the non-steroidal anti-inflammatory drugs (NSAIDs) are widely used for this condition, the efficacy is based on only a few studies, particularly in China. We tried to assess the safety and efficacy of etoricoxib in the treatment of acute gouty arthritis in China.

METHODSA randomized, double-blind, active comparator study was conducted at 10 sites in China. Patients (n = 178; ≥ 18 years of age) with acute gouty attack (< 48 hours) were treated for 5 days with etoricoxib (120 mg/d; n = 89) or indometacin (75 mg twice daily; n = 89). The primary efficacy end point was self-assessed pain in the affected joint (0-4 point Likert scale) from days 2 - 5. Secondary end points included investigator assessments of tenderness and swelling, patient/ investigator global assessments of response to therapy, and patients discontinuing treatment. Safety was assessed by adverse events (AEs).

RESULTSEtoricoxib and indometacin had comparable primary and secondary end points. Mean change difference from baseline from days 2 - 5 was 0.03 (95% confidence interval (CI) -0.19 to 0.25; P = 0.6364), which fell within the prespecified comparative bounds of -0.5 to 0.5. No severe AEs were associated with etoricoxib use. Non-severe AEs were mainly digestive and general, and most (73.7%) were mild, although they caused withdrawal of two subjects in the etoricoxib group, due to bilateral renal calculi and uronephrosis of the left kidney (unrelated to etoricoxib) and fever and chills (potentially etoricoxib-related). Overall, AEs were similar, although the absolute number of AEs in the etoricoxib group (n = 31) was less than the indometacin group (n = 34).

CONCLUSIONSEtoricoxib (120 mg once daily) is effective in treating acute gout, is generally safe and well-tolerated, and is comparable in efficacy to indometacin (75 mg twice daily).

Adult ; Aged ; Arthritis, Gouty ; drug therapy ; Cyclooxygenase Inhibitors ; adverse effects ; therapeutic use ; Double-Blind Method ; Female ; Humans ; Indomethacin ; adverse effects ; therapeutic use ; Male ; Middle Aged ; Pyridines ; adverse effects ; therapeutic use ; Sulfones ; adverse effects ; therapeutic use

Objective: To explore the safety and efficacy of a novel lead locking device (LLD) in the procedure of cardiac lead extraction for heart rhythm implants. Methods: A total of 6 patients using LLD for cardiac lead extraction in our hospital were retrospectively reviewed. Clinical parameters, the reason of cardiac lead extraction, lead locking stylet condition, outcome of lead extraction and operative complications were summarized. Results: There were 6 patients including 1 female with the median age at 62.5 years. LLD was used and 13 cardiac leads were extracted including 1 scrap electrode wire and 12 functional electrode wire. Among those, LLD was successfully inserted and locked on the top of 11/13 (85%) leads for whole procedure and 2 (15%) leads were not locked for whole procedure; 12 (92 %) leads were completely removed and 1 (8%) lead was partially removed. No severe complications occurred. Conclusion: The novel LLD may safely and effectively extract electrode lead which is beneficial for complete cardiac lead extraction.

In order to explore the pathological mechanism of perimenopausal syndrome and seek prevention and treatment measures， it is necessary to establish animal models that similar to human perimenopausal syndrome， so as to provide reference for drug research， new drug development and clinical application. In this paper， the keywords of "perimenopausal period" "perimenopausal syndrome" "menopause" "menopausal syndrome""menopausal period" "menopausal syndrome" and "animal" were searched in China National Knowledge Infrastructure （CNKI）， Chongqing Weipu， China Biomedical Literature Database （CBM） and Pubmed. In addition， the selection of domestic peripheral menopausal syndrome model animals in recent years and the advantages and disadvantages of corresponding models were summarized. A total of 673 studies were identified， of which 61 were included in the analysis. The most common animal model of perimenopausal syndrome is castration model， while the immunodeficiency model is less used. With the aging of the population and the rapid increase of psychosocial stress， the incidence of perimenopausal syndrome is high. Therefore， it is particularly important to explore the mechanism of perimenopausal syndrome. According to the experimental purpose， experimental period， experimental technology and other factors， the selection of appropriate model animals and modeling methods is the key of the success of the experiment of perimenopausal syndrome.

Senescence is an inevitable natural life process that involves structural and functional degeneration of tissues and organs. Recently, the process of skin aging has attracted much attention. Determining a means to delay or even reverse skin aging has become a research hotspot in medical cosmetology and anti-aging. Dysfunction in the epidermis and fibroblasts and changes in the composition and content of the extracellular matrix are common pathophysiological manifestations of skin aging. Reactive oxygen species and matrix metalloproteinases play essential roles in this process. Stem cells are pluripotent cells that possess self-replication abilities and can differentiate into multiple functional cells under certain conditions. These cells also possess a strong ability to facilitate tissue repair and regeneration. Stem cell transplantation has the potential for application in anti-aging therapy. Increasing studies have demonstrated that stem cells perform functions through paracrine processes, particularly those involving exosomes. Exosomes are nano-vesicular substances secreted by stem cells that participate in cell-to-cell communication by transporting their contents into target cells. In this chapter, the biological characteristics of exosomes were reviewed, including their effects on extracellular matrix formation, epidermal cell function, fibroblast function and antioxidation. Exosomes derived from stem cells may provide a new means to reverse skin aging.

Objective To develop a time-resolved fluorescent immunoassay kit for the rapid,accurate and quantitative detection of S100B protein in serum and to evaluate its performance.Methods The test strip was prepared using time-resolved fluorescent microsphere-labeled anti-S100B polyclonal antibody and rabbit IgG antibody,labeling pads,sample pads,S100B nitrocellulose films and absorbent paper,and an S100B time-resolved fluorescence immunoassay kit was obtained by assembling the cartridge.The performance of the kit developed was evaluated by standard curve,accuracy,minimum detection limit,linear interval,specificity,reproducibility and stability.The reference intervals of 199 pieces of healthy human serum and plasma samples from a certain region were detected with the kit,and the clinical performance of the kit and Roche Elecsys S100 kit was tested by synchronous blind method to assess the consistency of the results of the two kits for 142 samples.Results The S100B time-resolved fluorescence immunoassay kit had the standard curve beingy=(1.133 02+1.752 24)/[1+(x/1.082 20)×(-0.603 52)]-1.752 24,R2=0.999 08 and the linear range being[0.05,30]ng/mL,which met the requirements of the relative deviation of the accuracy within±15％,the minimum detection limit not hgier than 0.05 ng/mL,the relative deviation of specificity within±15％and the coefficient of variation of intra-and inter-batch difference less than 15％.The stability test results indicated that the kit was valid for 12 months at 2-30 ℃ conditions.The reference intervals of serum and plasma samples measured by the kit were both lower than 0.3 ng/mL.Clinical trials showed that the results by the kit and Roche Elecsys S100 Assay Kit were in high agreement(Kappa=0.906 1＞0.80)and met the requirements.Conclusion The kit developed detects the concentration of S100B protein in serum quickly,accurately and quantitatively,and provides references for the diagnosis and treatment of neurological diseases,autoimmune diseases,cerebrovascular diseases and etc.[Chinese Medical Equipment Journal,2024,45(1):47-55]

The treatment ideas with acupuncture for knee osteoarthritis (KOA) are explored on the base of Dongyuan needling technology. Regarding the rules of acupoint selection, Zusanli (ST 36) is predominant, the back-shu points are used for the disorders related to the invasion of exogenous factors, and the front-mu points are for the cases caused by internal injury. Besides, the xing-spring points and shu-stream points are preferred. In treatment of KOA, besides the local points, the front-mu points, i.e. Zhongwan (CV 12), Tianshu (ST 25) and Guanyuan (CV 4), are selected specially to tonifying the spleen and stomach. The earth points and acupoints on the earth meridians (i.e. Yinlingquan [SP 9], Xuehai [SP 10], Liangqiu [ST 34], Dubi [ST 35], Zusanli [ST 36] and Yanglingquan [GB 34]) are optional to coordinate yin and yang, essence and qi , and regulate the qi movement of spleen and stomach. The shu-stream points of liver, spleen and kidney meridians (Taichong [LR 3], Taibai [SP 3] and Taixi [KI 3]) are chosen to promote meridian circulation and regulate zangfu functions.
Humans ; Osteoarthritis, Knee ; Acupuncture Therapy ; Meridians ; Acupuncture Points ; Spleen