1.Application of automatic slide-dropping instrument in bone marrow chromosomal karyotyping
Wei ZHANG ; Chenghua CUI ; Ji ZHOU ; Yanyi LYU ; Siping WANG ; Shenghua CHEN ; Huijun WANG ; Qi SUN ; Zhijian XIAO ; Chengwen LI
Chinese Journal of Medical Genetics 2024;41(7):803-806
Objective:To explore the application of an automatic slide-dropping instrument in bone marrow chromosomal karyotyping.Methods:The effects of manual and automatic dropping methods under different environmental humidity were retrospectively analyzed, and the repeatability of the automatic dropping method was analyzed.Results:No statistical difference was found between the results of automatic and manual dropping methods under the optimum ambient humidity and high humidity ( P>0.05). At low humidity, there was a statistical difference between the two methods ( P<0.05). With regard to the repeatability, the coefficient of variations of the automatic dropping method for the number of split phases, the rate of good dispersion and the rate of overlap were all lower than those of the manual dropping method. A statistical difference was also found in the number of split phases ( P<0.05) but not in the discrete excellent rate and overlapping rate between the two methods ( P>0.05). Conclusion:Better effect can be obtained by the automatic dropping instrument. It is suggested to gradually replace manual work with machine.
2.Tetrahedral DNA nanostructures synergize with MnO2 to enhance antitumor immunity via promoting STING activation and M1 polarization.
Siping LIANG ; Jiaying LI ; Zhengyu ZOU ; Miao MAO ; Siqi MING ; Fan LIN ; Ziyan ZHANG ; Can CAO ; Jinyu ZHOU ; Yuanqing ZHANG ; Jiaping LI ; Minhao WU
Acta Pharmaceutica Sinica B 2022;12(5):2494-2505
Stimulator of interferon genes (STING) is a cytosolic DNA sensor which is regarded as a potential target for antitumor immunotherapy. However, clinical trials of STING agonists display limited anti-tumor effects and dose-dependent side-effects like inflammatory damage and cell toxicity. Here, we showed that tetrahedral DNA nanostructures (TDNs) actively enter macrophages to promote STING activation and M1 polarization in a size-dependent manner, and synergized with Mn2+ to enhance the expressions of IFN-β and iNOS, as well as the co-stimulatory molecules for antigen presentation. Moreover, to reduce the cytotoxicity of Mn2+, we constructed a TDN-MnO2 complex and found that it displayed a much higher efficacy than TDN plus Mn2+ to initiate macrophage activation and anti-tumor response both in vitro and in vivo. Together, our studies explored a novel immune activation effect of TDN in cancer therapy and its synergistic therapeutic outcomes with MnO2. These findings provide new therapeutic opportunities for cancer therapy.
3.Retrospectively analysis the Guangdong’s experience on how to transport potential infected passengers by chartered aircraft during outbreaks of COVID-19
Jian WU ; Jinle LIN ; Fang WANG ; Xiaolong LIU ; Xiaowen CHEN ; Binbin HE ; Shengting XU ; Xuejiao BAI ; Jing ZHANG ; Siping ZHOU ; Ping JIANG
Chinese Journal of Emergency Medicine 2020;29(7):896-900
Objective:To summarize the experience of five hospitals in Guangdong Province on successfully transporting retained passengers by chartered flights during the outbreak of the COVID-19.Methods:We retrospectively evaluated the operation and management, cabin arrangement, isolation requirements, and personnel protection in the aspect of epidemic prevention and control.Results:In 11 charter missions, over one thousand "healthy" passengers with potential risk of infections were transported back to China. The medical delivery team and flight crew were kept free of infection, passengers maintained zero cluster infections and no unexpected adverse events during the air transport.Conclusions:Our results indicate how to carry passengers in a scientific and orderly way is crucial for avoiding the transmission risks of the epidemic of COVID-19 among working staffers and passengers during air transportation.
4.Establishment of a New Evaluation Method for Identification of Drug Resistance of Staphylococcus aureus Based on Rapid Identification System of Microorganisms
Tong-tong JIANG ; Gui-jie TIAN ; Xian-yu LI ; Yi WANG ; Yue-yi LI ; Ya-jun XING ; Ya-nan SUN ; Shu-hua MA ; Jin-he ZHOU ; Wei-feng YANG ; Zhong-mei HE
Chinese Journal of Experimental Traditional Medical Formulae 2020;26(10):128-135
Objective::To explore the feasibility of the rapid identification system(MALDI-Biotyper System) of microorganisms for rapid identification of
5.Effects of perianesthesia position nursing model based on enhanced recovery after surgery in patients undergoing thoracoscopic surgery
Juanli CHEN ; Yuqin HU ; Yan ZHOU ; Siping HU
Chinese Journal of Modern Nursing 2020;26(35):4977-4980
Objective:To explore the effects of perianesthesia position nursing model based on enhanced recovery after surgery (ERAS) in patients undergoing thoracoscopic surgery.Methods:Totally 100 patients undergoing thoracoscopic pulmonary surgery in Huzhou Central Hospital between July and December 2019 were selected by convenient sampling and divided into the control group and the experimental group according to the random number table, with 50 cases in each group. Patients in the experimental group received perianesthesia position nursing, while patients in the control group received conventional position nursing. The time of position placement, number of placement personnel, intubation time, comfort and pain were compared between the two groups.Results:There were statistically significant differences in the placement time and number of placement personnel between the two groups ( P<0.05) . The GCQ score of the experimental group was higher, while the VAS score was lower than that of the control group, and the differences were statistically significant ( P<0.05) . Conclusions:The perianesthesia position nursing model based on ERAS can shorten the time of posture placement, reduce the pain, and improve the comfort in patients undergoing thoracoscopic surgery.
6.Screening and Characterization of Effective Components of Immunopotentiating Activity in Senecionis cannabifolii Herba
Tingting ZHOU ; Difu ZHU ; Shengjun JI ; Chunchi WANG ; Dongxu JIA ; Yanru LI ; Yan TANG
China Pharmacy 2019;30(4):523-527
OBJECTIVE: To screen and characterize effective components of immunopotentiating activity in Senecionis cannabifolii Herba. METHODS: The polysaccharide components were obtained by water extraction and alcohol precipitation method to yield 50% alcohol precipitation sample (SCHE-1) and 80% alcohol precipitation sample (SCHE-2). The cells from mice mononuclear macrophage line RAW264.7 were divided into blank group (medium without serum), negative control group (medium with serum), lipopolysaccharide group (LPS, positive control drug, 1 μg/mL), SCHE-1 and SCHE-2 low-dose and high-dose groups (0.5, 1 mg/mL). The cell viability of RAW264.7 cells was detected by MTT assay. The levels of IL-1β, IL-6 and TNF-α in RAW264.7 were detected by ELISA. These were used to investigate the effects of SCHE-1 and SCHE-2 on the immunological enhancing activity of RAW264.7 cells. The molecular weight and distribution of SCHE-1 were determined by size exclusion chromatography; the monosaccharide composition of SCHE-1 was determined by HPLC pre-column derivatization. Methylation analysis of SCHE-1 was conducted by NaOH method. RESULTS: Compared with negative control group, the activity of RAW264.7 cells was enhanced significantly in SCHE-1 groups and LPS group, which also significantly increased the levels of IL-1β, IL-6 and TNF-α in cell culture fluids (P<0.01). SCHE-1 was an effective component with immunopotentiating activity. The neutral sugar content of SCHE-1 was 40.05%, the uronic acid was 35.62%, and the protein was 8.89%. SCHE-1 was a mixture, molecular weight of which was 62-6 119 Da; monosaccharide was mainly composed of galacturonic acid, arabinose (Ara) and galactose (Gal). The results of methylation analysis showed that the backbone was composed of 1→3, 1→4 and 1→6 linked Gal, and branches were on the O-6 position of the 1→3 linked Gal, and the non-reducing terminals were Ara. CONCLUSIONS: SCHE-1 may be the effective component of immuno potentiating activity, and main component of SCHE-1 is polysaccharide. SCHE-1 may regulate the immune function by activating macrophages to release IL-1β, IL-6 and TNF-α.
7. Downregulation of large conductance calcium-activated potassium channels in paraventricular nucleus contributes to sympathoexcitation in rats with chronic heart failure
Renjun WANG ; Meiling WEN ; Qin ZHOU ; Xiaowei WEI ; Hua LI ; Yongbin ZHAO ; Yunfeng QI ; Jian LUAN ; Xiaofu ZHOU
Chinese Journal of Cardiology 2018;46(3):178-186
Objective:
To elucidate the association between large conductance calcium-activated potassium channels (BKCa) in the paraventricular hypothalamic nucleus (PVN) and sympathetic outflow in rats with chronic heart failure (CHF) .
Methods:
Male Wistar rats (6-7 weeks old) were randomized to sham operated group and CHF group (coronary artery ligation) . Two weeks after operation, BKCa inhibitor Iberiotoxin (IBTX) was infused into PVN by osmotic minipumps, rats were divided into following groups: sham+aCSF, CHF+aCSF, sham+low dose IBTX (0.125 nmol/nl) , CHF+low dose IBTX, sham+moderate dose IBTX (1.25 nmol/nl) , CHF+moderate dose IBTX, sham+ high dose IBTX (12.5 nmol/nl) , and CHF+high dose IBTX (
8.Dermoscopic features and patterns of onychomycosis
Zhenyan SUN ; Siping ZHANG ; Jing ZHANG ; Ao ZHOU ; Jianfeng ZHENG
Chinese Journal of Dermatology 2018;51(11):812-814
Objective To analyze the dermoscopic features and patterns of onychomycosis.Methods From February to July in 2017,hospitalized patients from the Department of Endocrine Dermatology of the People's Hospital of Xuancheng City was enrolled and subjected to direct microscopic examination of fungi in nails,and the patients with positive results for fungi were diagnosed with onychomycosis.And then,dermoscopic photographs of infected nails were taken to analyze the dermoscopic characteristics and patterns of onychomycosis.Results A total of 205 patients with 634 infected nails were investigated.The dermoscopic characteristics on the nail plates included marble-like turbid areas (47.3%,300/634),pigmentation (30.9%,196/634),splinter hemorrhages (18.3%,116/634) and onycholysis (13.2%,84/634).The prevalence rates of marble-like turbid areas,pigmentation and onycholysis all significantly differed between distal and lateral subungual onychomycosis (DLSO) group and total dystrophic onychomycosis (TDO) group (X2 =42.09,31.23,18.19,respectively,all P < 0.01).The dermoscopic characteristics at the free edge of the nails included nail thickening (33.1%,210/634) and subungual deposition of keratin and debris (26.5%,168/634).The TDO group showed significantly higher prevalence rates of nail thickening and subungual deposition of keratin and detritus compared with the DLSO group (x2 =44.3,18.52,respectively,both P < 0.01).Periungual skin dryness and desquamation occurred more frequently in the TDO group than in the DLSO group (X2 =16.07,P < 0.01).Of the 634lesional nails,141 (22.2%) showed a short spiked pattern,210 (33.1%) showed a longitudinal striated pattern,202 (31.9%) showed a linear edge pattern,and 193 (30.4%) showed a distal irregular termination pattern.Conclusion The main characteristic dermoscopic manifestations of onychomycosis are marblelike turbid areas,subungual deposition of keratin and debris,periungual skin dryness and desquamation,and characteristic dermoscopic patterns of onychomycosis are short spiked pattern,longitudinal striated pattern,linear edge pattern and distal irregular termination pattern.
9.Influence on the bad eating habits of diabetes by the management of diabetes education with families participation
Deshi ZHANG ; Xiangdong GUAN ; Yunfang LIANG ; Siping ZHOU ; Yongyi MAI
Modern Clinical Nursing 2013;(9):24-27
Objective To explore the influence on the bad eating habits of diabetes by the management of diabetes education with families participation.Method Sixty-six patients with type 2 diabete mellitus were chosen as study object.They were divided into the experiment group and the control group at random.The diabetic knowledge and die behavior education were taken to the two groups and the families of the experiment group.The bad eating habits of the two groups were investigated before and after management. Results The snack,night snack and out eating times were significantly decreased in the experiment group than the control group and before management.There were statistical significant difference(all P<0.05).Conclusion The management of diabetes education with families participation can improve the bad eating habits so as to delay the progression of diabetes.
10.Dynamic changes in the immune function of children with mycoplasma pneumoniae pneumonia on different disease stages
Siping LI ; Shaoji LIU ; Xiaomei LU ; Yanhong YAO ; Yanxiang ZHOU
Chinese Pediatric Emergency Medicine 2012;19(3):245-247
ObjectiveTo investigate the changes and functions of T lymphocyte subsets,immune globulin and complement in children with mycoplasma pneumoniae pneumonia(MPP) on different disease stages.MethodsThe levels of T Iymphocyte subsets of CD3,CD4,CD8 and immunoglobulin ( IgG,IgA IgM),and complement ( C3,C4 ) in the peripheral blood were detected on acute and recovery stages in 28 children with MPP by flow cytometry and immune nephelometry.Twenty-five healthy children were recruited as control group.ResultsAmong these subjects of MPP children on acute stage,the levels of CD3,CD4,CD8,and CD4/CD8 in the peripheral blood were (58.71 ± 11.63)%,(32.36 ± 8.06)%,(28.19±6.23 ) % and 1.15 ± 0.41 respectively,and on recovery stage,the levels of CD3,CD4,CD8,and CD4/CD8 were (61.29 ±10.17)%,(34.14 ±7.22)%,(26.47 ±6.01)%,and 1.29 ±0.37 respectively.Both on acute stage and on recovery stage of MPP children,the levels of CD4,CD4/CD8 were significantly lower than those in control group [ (39.53 ± 6.16 ) %,1.83 ± 0.49 ],and CD8 was significantly higher compared to thecontrol group( 1.83 ± 0.49 ),P<0.01.CD3 were lower than that in control group [ (63.03 ± 12.32) % ] on acute stage (P<0.01 ),and no significant difference on recovery stage (P>0.05).During the acute stage of MPP,IgG [ ( 14.50 ±3.86) g/L] and IgM [ ( 1.67 ±0.56) g/L] were obviously higher than those in control group [ (7.92 ± 2.62 ) g/L,( 1.06 ± 0.32 ) g/L,P<0.01 ],and C3 [ ( 0.83 ± 0.42 ) g/L ] were obviously lower compared to the control group [ ( 1.37 ± 0.33 ) g/L,P<0.05].There were no significant differences of IgA and C4 between MPP and control groups ( P>0.05 ).ConclusionChildren with MPP had celhilar immune and humoral immune disorders.Through the detection of T lymphocyte subsets,immunoglobulin and complement,it will be helpful to judge the effectiveness of clinical treatment,which provides a theoretical basis for the clinical application of immune regulators.

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