1.Measurement of Morphological Parameters of Cryptosporidium murisOocysts by Digital Image Processing Technology
Yuyan BING ; Yan LI ; Chunli AN
Chinese Journal of Parasitology and Parasitic Diseases 1987;0(03):-
Objective To establish and analyze the morphological parameters of the oocysts of Cryptosporidium muris for defining their morphological change. Methods Oocysts were collected from KM mice(immunodepressed by dexamethasone for 10 days) and examined with modified acid-fast staining. Images of 1 190 oocysts were acquired by photograph system. The length, width, perimeter, area and equivalent diameter of the oocysts were obtained by computer digital image processing system and analyzed by SPSS software (Version 11.0). Result The average length of the oocysts was 5.93 ?m, ranging from 3.36 ?m to 8.51 ?m in 95% confidence interval of them. The average width was 4.96 ?m, ranging from 3.26 ?m to 6.66 ?m in 95% confidence interval of them. The average perimeter was 18.03 ?m and the average area was 16.08 ?m2. Conclusion Data obtained from the computer system are objective and precise, offering scientific foundation for measuring the oocysts and for identifying Cryptosporidium spp.[
2.Health Outcomes Equity among the People Insured in New Rural Cooperative Medical System in Shaanxi
Yuyan QIAN ; Jianmin GAO ; Jue YAN ; Xiaowei YANG
Chinese Medical Ethics 2015;(3):454-458
Objective:To study the health equity and explore the influencing factors of health inequities among those insured in New Rural Cooperative Medical System and to provide theoretical and factual basis for improvement of medical insurance system through .Method:Using concentration index decomposition to explore the sources of inequity in health outcomes and the degree of horizontal inequity in health outcomes .Results:Economical level leads that the concentration indexes of two week prevalence favor the poor , i.e.the worse the health outcome of the rich is.Economical level leads that the concentration indexes of chronic disease prevalence and self -reported health defective rate favor the rich , i.e.the worse the health outcome of the poor is .Conclusion:Economic level is the primary factors affecting two weeks prevalence , age, culture level, the employment situation is the factors al-leviate health outcomes unfair .Increase people′s economic level and cultural level , improve the situation of em-ployment is important to the health equity .
3.Research of coagulation function changes in newborn hemolytic disease
Haiyan CAI ; Caiyun GAO ; Min WANG ; Aixia YAN ; Shuzhong WANG ; Yuyan YANG
Chinese Journal of Postgraduates of Medicine 2011;34(18):16-18
Objective To investigate the clinical significance and coagulation function changes in newborn hemolytic disease. Method The newborn hemolytic disease ( 60 cases, hemolytic disease group ), non-hemolytic hyperbilirubinemia (60 cases, non-hemolytic hyperbilirubinemia group) and normal newborn (60 cases,control group) were selected as the study subjects, the prothrombin time (PT) and activated partial thromboplastin time (APTT) were measured, and the blood platelet count at the same time was detected. Results PT and APTT in hemolytic disease group were higher than those in non-hemolytic hyperbilirubinemia group[(28.79 ?.21) s vs. (18.98?.41) s and (58.52?.13) s vs. (47.26?.81) s], and they were apparently higher than those in control group [(13.81 ?1.83) s and (38.10 ?3.00) s], the difference had statistic significance (P<0.05). There was no statistic significance to detect the blood platelet count (P> 0.05). Conclusions The newborn hemolytic disease has the bleeding tendency, and the bleeding tendency has no relationship with the quantity of the blood platelet, but relates to the extension of PT and APTT. The more serious the case is, the more obvious the PT and APTT rise. PT and APTT can be as the detection index and evaluating effect of the newborn hemolytic disease coagulation function.
4.Clinical research on the D-dimer changes in haemolytic disease of newborn
Haiyan CAI ; Yuyan YANG ; Caiyun GAO ; Aixia YAN ; Shuzhong WANG ; Min WANG
Chinese Journal of Postgraduates of Medicine 2011;34(27):31-33
ObjectiveTo investigate the change of D-dimer in haemolytic disease of newborn and its clinical significance. MethodsSixty cases with haemolytic disease of newborn were divided into nonserious group(34 cases) and serious group(26 cases) by the level of bilirubin, 40 cases of normal neonatus (control group) were also selected. The levels of D-dimer and fibrinogen(FIB) were measured and compared.ResultsThe level of D-dimer in serious group and non-serious group[ (9.29 ± 11.34), (0.84 ± 0.77 ) mg/L]was higher than that in control group [ (0.45 ± 0.06) mg/L](P < 0.01 or < 0.05 ),the level of D-dimer in serious group was higher than that in non-serious group (P< 0.01 ). There was no significant difference in the level of FIB among the three groups (P > 0.05). ConclusionsThere is hypercoagulability in the serious haemolytic disease of newborn. It is valuable to detect plasma D-dimer density for serious haemolytic disease of judgement and treatment.
5.Laparoscopic anatomical nerve sparing radical hysterectomy for cervical cancer: a clinical analysis of 37 cases
Yong CHEN ; Yan LI ; Huicheng XU ; Junnan LI ; Yuyan LI ; Zhiqing LIANG
Chinese Journal of Obstetrics and Gynecology 2009;44(5):359-363
Objective To investigate feasibility of laparoscopic anatomical nerve sparing radical hysterectomy (LANSRH) used for locally advanced cervical cancer treatment and evaluate early recovery of bladder function postoperatively. Methods From October 2006 to September 2007, 37 cervical cancer patients with stage Ⅰb1 to Ⅱ a underwent LANSRH(LANSRH group) with pelvic lymphadenectomy matched 25 patients with cervical cancer treated by general laparoscopic radical hysterectomy (LRH,LRH group) with pelvic lymphadenectomy. The data of operating time, blood loss, numbers of lymph node, the length of resected vaginal and paracervix tissue were collected and compared. In the mean time, postoperative recovery of bladder function was evaluated. Results The laparoscopic anatomic nerve-sparing procedure was performed successfully and safely among all patients. (1) There was no remarkable difference in the following clinical parameters between LANSRH and LRH group: median operating time [(175±41) min vs. (178±30) min, P=0.72 ], blood loss [(233±104)ml vs. (218±77) ml, P=0.06], numbers of lymph nodes (13±4 vs. 15±6, P=0.16), resected length of paracervix tissue [(3.6±0.5)cm vs. (3.7±0.6) cm, P=0.43], resected length of vaginal tissue [(3.5±1.0)cm vs. (3.5±0.8) cm, P=0.80]. (2) The mean time of the Foley catheter removed was (10.6±2.7)days(7-17 days)in LANSRH group and (17.2±4.2)days(9-25 days)in LRH group (P=0.02). After Foley catheter removed, 95% (35/37) presented bladder fulfilling sense, 86% (32/37) presented automatic micturition and urination emptying in LANSRH group. However, In LRH group, 88% (22/25) presented bladder fulfilling sense, 76% (19/25) presented automatic micturition and urination emptying. The bladder void function recovery were 68% (25/37) in class 0 and 3% (1/37) in class Ⅱ in LANSRH group, when compared with 40% (10/25) in class 0 and 12% (3/25) in class Ⅱ in LRH group, it reached statistical difference (P<0.05). In the mean time, there was no significant difference in Class Ⅰ bladder void function recovery, which were 24% (9/37) and 48% (12/25). (3) No surgery complications and blood transfusion were observed in LANSRH and LRH group. Postoperative pathology suggested that no tumor cell invasion occurred in paracervix tissue and lymph nodes. During the range of 11 to 19 months follow-up, all patients were alive without tumor recurrence and metastasis. Conclusion LANSRH is safe and feasible surgical management for cervical cancer at early stage and would improve the recovery of bladder voiding function postoperatively by sparing anatomical nerve.
6.Efficacy of follicular unit extraction in the repair of scarring eyebrow loss: a clinical observation
Yan WANG ; Jufang ZHANG ; Yuyan WANG ; Haiyan SHEN ; Xiaozhe LI ; Yonglin LI
Chinese Journal of Dermatology 2017;50(2):117-119
Objective To evaluate the efficacy of follicular unit extraction (FUE) in the repair of scarring eyebrow loss.Methods A total of 30 patients with scarring eyebrow loss were treated with FUE technique in the Department of Plastic Surgery of Zhengzhou First People's Hospital,including 18 females and 12 males with 41 eyebrow defects.Fine soft hairs with a length of 5-10 mm were extracted from the back of the ear and temporal region of the patients,and then were split into individual follicular units under a microscope at 6 × magnification.The transplant density ranged from 20 to 30 FU/cm2.Results During the 3-18 months of follow-up after the surgery,eyebrows in the recipient areas grew in a natural direction and showed good appearance.The survival rate of hair grafts was up to 90%,and the patients were satisfied with the results.Conclusion FUE may be an ideal method for the treatment of scarring eyebrow loss with less injury and high survival rate of hair grafts.
7.Clinical efficacy analysis of adult sinonasal rhabdomyosarcoma.
Yunlong BAI ; Xiaohong CHEN ; Yuyan YAN ; Shurong ZHANG ; Weiguo ZHOU ; Jugao FANG ; Zhigang HUANG
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2015;29(9):804-810
OBJECTIVE:
To investigate the clinical prognostic impact factors of adult sinonasal rhabdomyosarcoma (SNRMS).
METHOD:
The clinical features, treatment methods, and disease outcome were reviewed retrospectively for twenty-three adult SNRMS between 2006 January and 2014 December. The survival analysis was performed by Kaplan-Meier estimate and the comparison between groups by Log-rank test. Multivariate analysis was carried out by Cox proportional hazard model.
RESULT:
Patients' ages ranged from 18 to 59 years (median, 23.2 years). With a median follow-up of 20 moths (3-47 moths), 14 cases dead and 9 cases alive, the 1-year and 2-year overall survival (OS) rates were 77.1% and 35.0%, respectively. Within the 1-year and 2-year OS rates,early stage group had a higher overall survival rates than advanced diease group (100.0%, 66.7% and 83.3%, 10.5%, P < 0.05); combined therapy group had a higher overall survival rates than single treatment group (86.7%, 50.0% and 50.8%, 0, P < 0.05). In the non-metastasis group (21 cases), 1-year and 2-year distant metastasis rates were 38.1% and 70.5%, respectively. Multivariate analysis showed that radiotherapy, chemotherapy and tumor diameter less than 5 cm were good prognostic factors (P < 0.05), while the lymph node metastasis, meningeal involvement and orbital involvement were poor prognostic factors (P < 0 05). In the 14 cases of dead patients, 92 8% (13/14) died of distant metastasis.
CONCLUSION
Adult RMS had a high advanced rate with poor prognosis. Distant metastasis is the leading cause of death. Controlling distant metastasis is a key to improve the survival rate.
Adolescent
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Adult
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Lymphatic Metastasis
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Multivariate Analysis
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Paranasal Sinus Neoplasms
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diagnosis
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mortality
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pathology
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Prognosis
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Proportional Hazards Models
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Retrospective Studies
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Rhabdomyosarcoma
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diagnosis
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mortality
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pathology
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Survival Analysis
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Young Adult
8.Amplitude of brain low-frequency fluctuation changes after sleep deprivation in healthy adolescent subjects: An fMRI study
Guoling ZHOU ; Yuanyue ZHOU ; Yan LIU ; Li PEI ; Shunying PAN ; Yuyan SUN ; Chunjuan HUANG ; Xialing CHEN ; Xiaohua ZHU ; Weiming HU
Chinese Mental Health Journal 2017;31(2):170-176
Objective:To explore the regional brain activities in healthy adolescent subjects after sleep deprivation (SD) using amplitude of low-frequency fluctuation (ALFF) method.Methods:Total of 16 healthy adolescent subjects (8 males,8 females;aged 13-20 years) were recruited in the community and the campus through the internet and posters.Each of the 16 healthy adolescent subject underwent the attention network test and magnetic resonance imaging (MRI) session twice:once was after rested wakefulness (RW condition),and the other was after SD condition.Amplitude of low frequency fluctuation (ALFF) method was used to assess the local brain features.The mean ALFF signal values of the different brain areas were performed to investigate their relationships with the accuracy rate,reaction time and lapse rate in the attention network test,and were analyzed with a receiver operating characteristic (ROC) curve to investigate their sensitivities and specificities to distinguish the SD condition from the RW condition.Results:Subjects showed a lower response accuracy rate [(83 ± 12) % vs.(97 ± 4) %,P < 0.05],a longer response time [(832 ± 134) ms vs.(715 ± 97) ms,P < 0.05] and a higher lapse rate [(15 ± 11)% vs.(2.4 ±7.3)%,P <0.05] under SD condition than under RW condition.They showed higher ALFF area in the right cuneus (BA 17,BA 18),and lower ALFF areas in the right lentiform nucleus,right claustrum,left dorsolateral prefrontal cortex (BA 46) and left inferior parietal cortex (BA 39) under SD condition than under RW condition.Under SD condition,the mean ALFF signal value of the right claustrum showed a significant positive correlation with the accuracy rate (r =0.69,P <0.05),and a negative correlation with the lapse rate (r =-0.71,P <0.05).The mean ALFF signal value of the dorsolateral prefrontal cortex showed a significant positive correlation with the reaction time (r =0.68,P < 0.05).The values of area under the curve of the right cuneus,right lentiform nucleus,right claustrum,left dorsolateral prefrontal cortex and left inferior parietal cortice were 0.9,0.8,0.9,0.8 and 0.9,respectively.These different ALFF areas also showed high degree of sensitivities and specificities.Conclusion:Sleep deprivation leads to the dysfunction in the default mode network,anticorrelatedtask-positive network,and advanced cognitive function brain areas,and the functional compensation in the visual network.
9.Effect evaluation of interventional training of working memory on children with developmental dyslexia
JIANG Qi, LUO Yan, LONG Ji, YANG Yuyan, TAI Xiujuan, LIU Shuqing, YANG Zaifeng
Chinese Journal of School Health 2020;41(5):724-727
Objective:
To explore the effect of working memory intervention training on working memory and literacy of children with developmental dyslexia,so as to provide a preference for practice of the trianing of working memory among children with dyslexia.
Methods:
A total of 32 children with dyslexia of grade 3-5 in a primary school in Guiyang were randomly divided into two groups: the study group (n=16) and the control group (n=16),and the software of training exercises of working memory was applied to conduct interventional trainings of different durations to 2 gruops of children.
Results:
Through the intervention training of working memory, the scores of literacy and working memory tasks in the study group (2 217.88±252.32, 105.13±7.68) were significantly higher than those in the control group (1 907.69 ± 545.15, 96.50 ± 11.04) (t=2.06, 2.56, P<0.05).
Conclusion
The working memory ability of children with dyslexia can be improved by working memory intervention training for a certain period of time. The intervention effect is not only significant in the trained working memory task, but also can be extended to other untrained contents such as literacy.
10.Dermoscopic features of 79 cases of childhood vulvar lichen sclerosus
Yan LI ; Li ZHANG ; Yuyan XIE ; Yueting ZHAO ; Hong SHU
Chinese Journal of Dermatology 2022;55(10):885-888
Objective:To investigate dermoscopic features of childhood vulvar lichen sclerosus.Methods:From January 2019 to May 2021, 79 female children with vulvar lichen sclerosus were collected from Kunming Children′s Hospital, and their dermoscopic features at first and return visits were analyzed retrospectively.Results:Among the 79 female children with vulvar lichen sclerosus, their age ranged from 2.4 to 12 years, the age at onset was 5.6 ± 2.12 years, the course of disease was 14.23 ± 12.36 months, and 30 children received regular follow-up and treatment. Among 329 skin lesions at the first visit, characteristic vascular shapes were observed in 149 (45.3%) , including linear vessels in 129, punctate vessels in 25, coiled vessels in 19, and hairpin-like vessels in 12; degenerative structures and pigment abnormalities were seen in 207 (62.92%) , including bluish-gray pigmented structures in 136, brown pigmented structures in 51, pepper-like patterns in 15, etc.; yellowish-white structureless areas were found in 280 (85.1%) , follicular keratotic plugs in 97 (29.5%) , and reddish-violet globules and patches in 66 (20%) . Among 238 skin lesions at the return visit, characteristic vascular shapes were observed in 100 (42%) , including linear vessels in 87, dendritic vessels in 21 and punctate vessels in 4, and no hairpin-like vessels were observed; degenerative structures and pigment abnormalities were seen in 154 (64.70%) , including brown pigmented structures in 93, bluish-gray pigmented structures in 57, and pepper-like patterns in 4; yellowish-white structureless areas were found in 165 (69.3%) , follicular keratotic plugs in 62 (26.1%) , and reddish-violet globules and patches in 8 (3.4%) . The prevalence rates of bluish-gray pigmented structures, yellowish-white structureless areas, reddish-violet globules and patches, punctate vessels, hairpin-like vessels, and coiled vessels in the skin lesions were all significantly lower at the return visit than at the first visit (all P < 0.05) , while the prevalence rate of the brown pigmented structure was significantly higher at the return visit than at the first visit ( P < 0.05) . Conclusion:Under a dermoscope, yellowish-white structureless areas are a highly specific characteristic of childhood vulvar lichen sclerosus, and therapeutic effect can be monitored by observing changes in dermoscopic features, including brown pigmented structures, bluish-gray pigmented structures, yellowish-white structureless areas, reddish-violet globules and patches, and vascular structures. Dermoscopy shows favorable application value in auxiliary diagnosis and follow-up observation of childhood vulvar lichen sclerosus.