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Objective@#To investigate the use of conventional MR imaging to guide treatment in patients with cholecystolithiasis and diffuse inflammatory thickening of gallbladder wall.@*Methods@#The clinical data of patients who were treated in the Ningbo Huamei Hospital, University of the Chinese Academy of Sciences between January 2017 and January 2018 were analyzed. These patients were divided into two groups: patients with acute cholecystitis (n=139) and patients with viral hepatitis combined with cholecystolithiasis (n=67). Differences in the imaging signs in standardized upper abdominal contrast enhanced MRI examinations were retrospectively analyzed.@*Results@#The imaging signs, including stone location, continuity of gallbladder mucosa, exudation in peri-gallbladder space, edema of intrahepatic portal area showed significant differences between the two groups (all P<0.05). On stratification analysis, the type of thickened gallbladder wall, background of liver parenchyma and extent of edema in intrahepatic catchment area also showed significant differences (all P<0.05). The imaging signs, including non-gallbladder neck ductal stones, concentric thickening of gallbladder wall, continuous mucous membrane in gallbladder and no peri-gallbladder space exudation but diffuse edema of intrahepatic catchment area supported the diagnosis of viral hepatitis combined with gallstones. The imaging signs, including discontinuity of gallbladder mucosa, exudation of peri-gallbladder space, diffuse edema of gallbladder wall without a cirrhotic background and edema in intrahepatic portal area supported the diagnosis of acute calculous cholecystitis of gallbladder.@*Conclusions@#Routine upper abdominal contrast enhanced MRI plays an important role in demonstrating the underlying cause of gallbladder wall diffuse edema thickening in patients with gallstones. It provides an important reference for the choice of clinical treatment pathway.
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0bjective To investigate the use of conventional MR imaging to guide treatment in patients with cholecystolithiasis and diffuse inflammatory thickening of gallbladder wall.Methods The clinical data of patients who were treated in the Ningbo Huamei Hospital.University of the Chinese Academy of Sciences between January 2017 and January 2018 were analyzed.These patients were divided into two groups:patients with acute cholecystitis(n=139)and patients with viral hepatitis combined with cholecys-tolithiasis(n=67).Differences in the imaging signs in standardized upper abdominal contrast enhanced MRI examinations were retrospectively analyzed.Results The imaging signs,including stone location,continuity of gallbladder mucosa,exudation in peri-gallbladder space,edema of intrahepatic portal area showed significant differences between the two groups(all P＜0.05).On stratification analysis,the type of thickened gallbladder wall.background of liver parenchyma and extent of edema in intrahepatic catchment area also showed significant differences(all P＜0.05).The imaging signs,including non-gallbladder neck ductal stones,concentric thickening of gallbladder wall,continuous mucous membrane in gallbladder and no peri-gallbladder space exudation but diffuse edema of intrahepatic catchment area supposed the diagnosis of viral hepatitis combined with gallstones.The imaging signs.including discontinuity of gallbladder mucosa.exudation of peri-gallbladder space,diffuse edema of gallbladder wall without a cirrhotic background and edema in intrahepatic portal area supposed the diagnosis of acute calculous cholecystitis of gallbladder.Conclusions Routine upper abdominal contrast enhanced MRI plays an important role in demonstrating the underlying cause of gallbladder wall diffuse edema thickening in patients with gallstones.It provides an important reference for the choice of clinical treatment pathway.
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Objective To analyze the CT and MRI features of splenic inflammatory myofibroblastoma (SIMF).Methods The CT and MRI images of 6 patients with SIMF were retrospectively analyzed.Results 5 cases underwent CT examination;2 cases did MRI.Six cases of SIMF were all single lesions;the average diameter was (3.9 ± 0.9) cm;the lesions were round or gourdshaped;most have clear boundaries with uneven scan density.On the MRI,the parenchymal part was slightly low signal on T1WI,inhomogeneous hypointensity on T2WI,or high signal on T2WI.After CT or MRI enhancement,lesions were progressively enhanced.Correct preoperative diagnosis was established in only 1 patient.Conclusion In this study,all SIMF cases present as single lesion.The circular appearance and clear boundaries are in common.Asymptotic intensification with map-unenhanced regions is the main enhancement feature.
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Objective To investigate the effect of aloe-emodin on Akt/mTOR,apoptosis and migration of autophagy-related pathway in colorectal cancer LOVO cells. Methods The LOVO cells were divided into control group(normal culture),low dose group(LOVO cells+10 μmol/L aloe-emodin culture 30 min), medium dose group (LOVO cells + 30 μmol/L aloe-emodin culture 30 min) and high dose group (LOVO cells + 50 μmol/L aloe veratin culture 30 min). The cell proliferation rate was measured by CCk-8 method at 24,48 and 72 h respectively. The apoptotic rate of each group was detected by flow cytometry. The migration ability of each group was detected by Transwell chamber. Western blot was used to detect the expression of IC3-Ⅰ,IC3-Ⅱ,Beclin-1,mTOR,p-mTOR,Akt and p-Akt.Results Compared with that of the control group,the cell rate,migration ability and apoptosis rate of the low dose group was not significantly changed(P>0.05).The cell rate and migration ability of the medium and high dose groups was significantly decreased and the apoptosis rate was significantly increased:0.43 ± 0.03,0.59 ± 0.04 vs.0.16 ± 0.00;0.57 ± 0.07,1.06 ± 0.17 vs.0.34 ± 0.02;0.37 ± 0.02, 0.49 ± 0.01 vs.0.13 ± 0.00,P<0.05,there was dose dependent(P<0.05).Compared with those of the control group,the expressions of IC3-Ⅰ,IC3-Ⅱ,Beclin-1,mTOR,p-mTOR,Akt and p-Akt in the low dose group showed no significant change(P>0.05),those were decreased in middle and high dose groups which showed significant differences:0.85 ± 0.08,0.37 ± 0.02 vs.2.08 ± 0.07;1.42 ± 0.09,1.19 ± 0.02 vs.1.97 ± 0.11;0.97 ± 0.00,0.84 ± 0.06 vs.1.19 ± 0.02;0.43 ± 0.02,0.31 ± 0.01 vs.0.98 ± 0.08,P<0.05, there were dose dependent (P < 0.05). Conclusions Aloe-emodin can promote autophagy, apoptosis there inhibit the growth,migration of colorectal cancer LOVO cells by reducing the expression of Akt/mTOR signaling pathway and reducing its phosphorylation level.
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Objective To analyze the MR imaging performances and pathological characteristics of nodular muscular sarcoidosis,and to improve the diagnostic accuracy.Methods Six cases with pathologically confirmed nodular muscular sarcoidosis were included,the MRI imaging findings and pathologic appearance were analyzed,and the literature was reviewed.Results Six patients underwent plain and enhanced MRI examination with 3 cases of unilateral gastrocnemius muscle single lesion,1 case of unilateral anterior medial thigh muscle lesions,and 2 cases of bilateral gastrocnemius muscle lesions.MRI plain scan showed a strip-shaped or fusiform with slightly short TI-long T2 signal along the muscle fibers,and the occupancy effect was not obvious."Dark star" sign showed in lesion center with axial T2WI and enhanced T1WI,and "three stripes" sign could be seen along the long axis view image lesions.The lesion obviously enhanced after enhancement,with mild enhancement center.Similar small nodular satellite lesions were seen around 5 large lesions,and 4 cases showed similar small nodule enhancement in distant muscle groups.Pathological manifestations:granulomatous inflammation of muscle fibers,intermuscular epithelial cells,and multinucleated tissue cells with or without lymphocytic infiltration;no cheese-like necrosis in the nodules,visible fusion of nodules.Conclusion On MRI,it is characterized by strips or fusiform lesions along the muscle fibers,visible "three-layer stripe sign" and "black star sign",and the characteristics of the enhanced muscle nodules in the surrounding muscle groups,which contributes to the diagnosis and differential diagnosis of muscular sarcoidosis.
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OBJECTIVE: More than 70% of hepatic alveolar echinococcosis (HAE) are inoperable. Thus, long-term, or even life-long, pharmacological treatment with benzimidazoles is necessary. For effective treatment, it is of great importance to employ imaging techniques to detect and monitor the non-resectable parasitic viability. Therefore, this study aimed to evaluate diffusion-weighted imaging (DWI) in assessing the viability of HAE in comparison to 18-fluoro-deoxyglucose (18F-FDG) positron emission tomography, combined with computed tomography (PET/CT). MATERIALS AND METHODS: Positron emission tomography, computed tomography and DWI (b-values: 0, 800 s/mm2) were retrospectively analysed in eight patients with clinically-verified HAE to, generate the apparent diffusion coefficient (ADC) map. The activity of HAE lesions in both techniques were determined independently by two radiologists according to the following standard: (+), marked focally or perilesionally increased FDG uptake/high signal intensity; (−), a hepatic defect without FDG uptake/no high signal intensity. Every lesion's maximum standardized uptake value (SUV(max)) on the PET/CT images and mean ADC values on the parametric ADC maps were measured respectively. Results of PET/CT and DWI were compared on a per-lesion-basis. Pearson's correlation coefficient was assessed for statistical analysis. RESULTS: A total of 14 HAE lesions were detected. Eight lesions (diameter 3–15 cm) showed perilesional hyper-signal intensity on DWI. This was visualised on PET/CT as increased FDG uptake. They mainly existed in the lesion's border with normal liver parenchyma. Five lesions (diameter < 2 cm) were detected as nodular hyperintensity on DWI and a ‘hot spot’ on PET/CT in the same distribution. One patient, who had received oral drug therapy for three years showed significantly decreased perilesional hyperintensity on the DWI and a hepatic defect without any FDG uptake on PET/CT. Pearson's correlation coefficient indicated a significant inverse correlation of the ADC and the SUV(max) (r = −0.67, p < 0.001). CONCLUSION: Diffusion-weighted imaging is capable of offering information on visually detecting the HAE lesions' viability and may be useful for routine application in the initial diagnosis of HAE.
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Humans , Benzimidazoles , Diagnosis , Diffusion , Drug Therapy , Echinococcosis , Echinococcosis, Hepatic , Electrons , Liver , Magnetic Resonance Imaging , Parasites , Positron Emission Tomography Computed Tomography , Positron-Emission Tomography , Retrospective StudiesABSTRACT
Objective To investigate the distribution of LAP+CD4+T cells in gastric carcinoma microenvironment and the correlation of LAP + CD4 + T cells with the progression of gastric tumor. Methods Forty gastric tumor patients and 20 healthy donors were enrolled in this study. The percentage of LAP+CD4+T cells in the peripheral blood and tumor tissue was detected by flow cytometry. The correlation of LAP+CD4+T cells with the progression of gastric tumor was analyzed. Results The percentage of LAP+CD4+T cells in the peripheral blood of gastric tumor patients was higher than that of health donors:(10.9±3.3)%vs. (4.3 ± 1.2)%;the percentage of LAP+CD4+T cells from tumor tissue was higher than that from non-tumor tissue:(13.5 ± 5.3)%vs. (4.7 ± 1.4)%. The percentage of LAP+CD4+T cells in peripheral blood from metastasis patients was higher than that from non-metastasis patients and health donors: (10.1 ± 6.4)% vs. (4.5 ± 1.3)% and (4.3 ± 1.2)%. Conclusions LAP+ CD4+ T cells accumulates in gastric carcinoma microenvironment and the percentage of LAP+CD4+T cells increases along with the progression of gastric tumor.
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Objective To evaluate the diagnostic value of MSCT in the differentiation of thymic epithelial tumours (TET)with the maximum diameter equal or less than 3 cm.Methods A retrospective analysis of pathological and imaging data of 56 patients with pathologically confirmed TET with the maximum diameter equal or less than 3 cm was performed.According to the 2004 WHO classification,56 TETs were classified as low-risk thymomas(types A/AB/B1),high-risk thymomas (types B2/B3)and thymic carcinomas (type C).The CT manifestations of TET in each group,including shape of tumor,tumor edge (smooth or spiculate protuberance), presence of small nodule around tumor,enhancement degree,pleura invasion and fat space around tumor,were analyzed retrospectively.The differences in the CT manifestations among three types were compared using chi-square test.If the sample number was too small, Fisher 's exact test was used.Results Compared with high-risk thymomas (23 cases)and thymic carcinomas (6 cases),regular round shape was more often observed in low-risk thymomas (27 cases)(χ2 =73,P <0.001;χ2 =116,P <0.001)and the mediastinum-lung interface was more likely to bulge (χ2 = 3.41,P =0.046;χ2 =7.39,P =0.01).Blurred edge,spiculate protuberance and pleural invasion and so on were significantly more common in high-risk thymomas and thymic carcinomas (P <0.001)and they were the most common in thymic carcinomas (χ2 =11.5,P =0.009).There was a significant difference between type B2 thymomas and thymic carcinomas (χ2 =31.52, P <0.001),however there was no significant difference between type B3 thymomas and thymic carcinomas (χ2 =6.96,P =0.07). Conclusion MSCT can accurately show the shape of tumor,tumor edge,presence of small nodule around tumor,enhancement degree,pleura invasion,which can predict the histologic type of thymomas and also can provide information for preoperative diagnosis and prognosis evaluation.
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Objective To investigate the distribution of LAP+CD4+T cells in gastric carcinoma microenvironment and the correlation of LAP + CD4 + T cells with the progression of gastric tumor. Methods Forty gastric tumor patients and 20 healthy donors were enrolled in this study. The percentage of LAP+CD4+T cells in the peripheral blood and tumor tissue was detected by flow cytometry. The correlation of LAP+CD4+T cells with the progression of gastric tumor was analyzed. Results The percentage of LAP+CD4+T cells in the peripheral blood of gastric tumor patients was higher than that of health donors:(10.9±3.3)%vs. (4.3 ± 1.2)%;the percentage of LAP+CD4+T cells from tumor tissue was higher than that from non-tumor tissue:(13.5 ± 5.3)%vs. (4.7 ± 1.4)%. The percentage of LAP+CD4+T cells in peripheral blood from metastasis patients was higher than that from non-metastasis patients and health donors: (10.1 ± 6.4)% vs. (4.5 ± 1.3)% and (4.3 ± 1.2)%. Conclusions LAP+ CD4+ T cells accumulates in gastric carcinoma microenvironment and the percentage of LAP+CD4+T cells increases along with the progression of gastric tumor.
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Objective To investigate mental health literacy (MHL) of community medical staffs in district and town of Zhongshan city,and to provide data to improve MHL of community medical staffs.Methods Totally 352 medical staffs who were not psychiatric physician and 81 psychiatric physician were selected.The Chinese Mental Health Knowledge Awareness Questionnaire (published by Ministry of Health) was used to investigate the awareness rate of mental health knowledge.Five vignettes of two schizophrenia,one bipolar disorder,one depression and one obsessive compulsive disorder,each with 8 related questions,were used to investigate the recognition and response ability.Results The average awareness rate of the two groups was more than 80.0% (87.6%,91.6%).For the item 2(75.6%,88.6%),6(74.1%,62.6%),19(36.5%,65.6%),and 20(74.1%,86.2%),the awareness rates were lower than 80.0%,and there were significant differences between the two groups (x2=8.45,4.92,27.48,6.99,all P<0.05).In vignettes survey,the correct rate was lower in the staffs who did not engaged in the mental health work than those in the other group,the difference was statistically significant(64.6% vs.75.9%,P<0.001).For both of the two groups the correct rate of depression was the lowest(x2=44.46,P<0.001).There was statistically significant difference between the total (x2=141.17,P<0.001).Conclusion The awareness rate of mental health knowledge has reached the national standards for community medical staffs,but they have to improve for some knowledge point.Their recognition and response ability for mental illness should be improved.
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<p><b>OBJECTIVE</b>To investigate the association of parameters in dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) using reference region model with prognostic factors and molecular subtypes of breast cancer.</p><p><b>METHODS</b>MRI and pathological data of 50 patients with pathologically confirmed invasive ductal carcinoma of the breast were retrospectively analyzed. Reference region model was applied to analyze pharmacokinetic quantitative parameters including volume transfer constant (RR K), rate constant (K) and the ratio of Kto extracellular space volume (K/V). The associations of the above parameters with prognostic factors and molecular subtypes of breast cancer were analyzed.</p><p><b>RESULTS</b>RR Kand Kwere significantly higher in patients of histological grade 3 compared with those of histological grade 1 & 2 (all<0.05); and the patients with estrogen receptor (ER)-negative and/or progesterone receptor (PR)-negative also had higher RR Kand Kthan those with ER-positive or PR-positive (all<0.05). For immunohistochemistry, RR Kand Kwere significantly higher in triple negative breast cancer compared with luminal type breast cancer (all<0.05).</p><p><b>CONCLUSIONS</b>High RR Kand Kare associated with poor prognosis of breast cancer, and which can also be used to distinguish molecular subtypes of breast cancer.</p>
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Objective To evaluate the diagnostic value of MSCT in the differentiation of thymic epithelial tumours (TET)with the maximum diameter equal or less than 3 cm.Methods A retrospective analysis of pathological and imaging data of 56 patients with pathologically confirmed TET with the maximum diameter equal or less than 3 cm was performed.According to the 2004 WHO classification,56 TETs were classified as low-risk thymomas(types A/AB/B1),high-risk thymomas (types B2/B3)and thymic carcinomas (type C).The CT manifestations of TET in each group,including shape of tumor,tumor edge (smooth or spiculate protuberance), presence of small nodule around tumor,enhancement degree,pleura invasion and fat space around tumor,were analyzed retrospectively.The differences in the CT manifestations among three types were compared using chi-square test.If the sample number was too small, Fisher 's exact test was used.Results Compared with high-risk thymomas (23 cases)and thymic carcinomas (6 cases),regular round shape was more often observed in low-risk thymomas (27 cases)(χ2 =73,P <0.001;χ2 =116,P <0.001)and the mediastinum-lung interface was more likely to bulge (χ2 = 3.41,P =0.046;χ2 =7.39,P =0.01).Blurred edge,spiculate protuberance and pleural invasion and so on were significantly more common in high-risk thymomas and thymic carcinomas (P <0.001)and they were the most common in thymic carcinomas (χ2 =11.5,P =0.009).There was a significant difference between type B2 thymomas and thymic carcinomas (χ2 =31.52, P <0.001),however there was no significant difference between type B3 thymomas and thymic carcinomas (χ2 =6.96,P =0.07). Conclusion MSCT can accurately show the shape of tumor,tumor edge,presence of small nodule around tumor,enhancement degree,pleura invasion,which can predict the histologic type of thymomas and also can provide information for preoperative diagnosis and prognosis evaluation.
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Objective To investigate the diagnostic value of the combined transeranial Doppler ultrasound and CT for vertebrobasilar insufficiency in elderly patients.Methods Fifty elderly patients with symptoms of vertebrobasilar insufficiency were enrolled and randomly assigned to 4 groups,including examinations of TCD,CTA,DSA,combination of TCD and CTA.The diagnostic accuracy was calculated and compared.Results Among 50 cases,the vertebrobasilar insufficiency was confirmed in 42 patients (84％) by TCD,45 (90％) by CTA,48 (96％) by DSA,49(98％) by combination of TCD and CTA.There was no significant difference in diagnostic rate between TCD combined with CTA and DSA (x2 =0.34,P＞0.05).Conclusions The diagnosis accuracy of the combined CTA and TCD is high,making it worth popularizing.
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Objective To investigate the feasibility of low-tube-voltage in combination with the three-dimensional adaptive iterative dose reduction (AIDR-3D) algorithm in performing lower extremity computed tomography angiography (CTA).Methods A total of 60 patients suspicious of lower extremity arterial occlusion were randomized into control group (120 kV,a =30) and experimental group (100 kV,n =30).The CTA was undertaken with a 320-row scanner (Toshiba Aquilion ONE),and the images was reconstructed with filtered back projection (FBP) algorithm in control group and FBP as well as the AIDR-3D algorithm in experimental group.The subjective image quality,vascular density (VD),noise,signal-to-noise ratio (SNR),contrast-to-noise ratio (CNR),and dose length product (DLP) were compared between two groups.Results The DLP was significantly lower in experimental group than that in control group [(503.5± 104.7) vs.(1 099.4 ± 151.7) mGy·cm,t =15.7,P ＜0.05].The images in experimental group with 100 kV and FBP protocol had significantly increased VD and noise (t =-3.13,-3.61,P ＜ 0.05) than that in the control.The images in experimental group with AIDR-3D had significantly lower noise and higher SNR and CNR than that with FBP (t =13.59,2.14,P ＜ 0.05),also significantly lower noise and significantly higher VD,SNR,and CNR than that in the control (t =-3.75,-4.19,-4.15,P ＜ 0.05).Conclusions Low-tube-voltage (100 kV) combined with AIDR-3D reconstruction could significantly improve the image quality and reduce radiation dose in lower extremity CTA with a 320-row CT scanner.Trial registration Chinese clinical trial registry,ChiCTR-DPD-16008054.
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Objective To explore the epidemiological characteristics of adult allergic diseases,looking for risk factors of allergic airway disease in Shiqi District of Zhangshan,and to provide a scientific basis for the development of community health education.Methods The questionnaire which was designed by national respiratory allergic diseases research and epidemiological survey collaboration group was carried out,and the random cluster sampling method was used to extract a total of 2 000 adults from Shiqi District of Zhongshan City,and the questionnaires,physi calexamination,and laboratory tests were taken.Results In Shiqi District of Zhongshan,the incidence rate of adult respiratory allergic disease was 10.4％,including allergic rhinitis,allergic pharyngitis and allergic asthma,accounted for 54.33％,33.65％ and 12.02％.Most common cause is smoking and keeping pets.Among respiratory allergic disease population,smoking accounted for 28％ and keep pets accounted for 17.8％.Common allergens are mites,cockroaches,animal fur and flowers.Leather pilot assassination test positive rate of respiratory allergic disease population was 37.50％,including mites,cockroach accounted for 23.08％,7.21％ of animal fur,flowers accounted for 6.25％.Conclusion In Shiqi District of Zhongshan,adult respiratory allergic disease prevalence is same as the country,the majority is respiratory diseases.The most common cause is smoking and keeping pets.The most common allergens are mites,cockroaches,animal fur and flowers.The incidence maybe related to life behavior and the living environment.
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Objective To compare the clinical efficacy of gemcitabine arterial infusion chemotherapy with intravenous chemotherapy in the management of patients with advanced pancreatic cancer and to evaluate the efficacy and safety of gemcitabine arterial infusion chemotherapy. Methods 43 patients with advanced pancreatic cancer were included in this study, of whom 21 patients received arterial infusion chemotherapy (Group A) and the other 22 were treated by intravenous chemotherapy (Group B), gemcitabine combined with 5-FU chemotherapy was administrated in both groups. The main outcomes were clinical benefit response (CBR), tumor response rate and toxicity. Results Compared with Group B, there was a significant improvement of CBR in group A (81% vs 50%, P =0.033) ; there was also significant improvement of pain control in group A (76.2% vs 45.5%, P =0.039). There was no significant difference in the tumor response rate between two groups (33.3% vs 22.7%, P =0.498). No significant increase of side effects was observed in both groups. Conclusions In the management of advanced pancreatic cancer, the arterial infusion method may be more favorable than intravenous approach in improving clinical benefits with mild toxicity and well tolerability.
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Objective To investigate the prevalence and the clinical features of pancreatic cancer pain in a Chinese patient population.Methods The study was carried out in 415 cages of pancreatic cancer which were admitted to the First Municipal people's Hospital of Guangzhou Medical college and the Second Affiliated Hospital of Sun Yat-sen University from 1999 to 2007.The prevalence,clinical features of pancreatic cancer pain and its correlations with the cancer site and the clinical staging were analyzed.Results Of the 415 patients.the prevalence of pain wag 65.1%and 60.5%of all the patients presented pain as the initial symptom;the incidence of pain in pancreatic body/tail cancer patients was 80.7%.while it was 71.4%in total pancreatic cancer patients.and the incidence was 58.2%in pancreatic head cancer patients;the incidence between pancreatic body/tail cancer and pancreatic head cancer patients was statistically different (P＜0.05).The incidence of pain in patients with stage Ⅰ,Ⅱ,Ⅲ,and Ⅳ was 28.6%,58.1%,66.2%and 78.6%.and the difference was statistically significant(P＜0.01).The incidence of moderate to severe degree of pain in patients with stage Ⅰ,Ⅱ,Ⅲ,and Ⅳ was 18.8%,44.4%,53.1%and 68.2%,and the differenee was statistically significant(P＜0.01).Conclusions Pain was very common in patients with advanced pancreatic cancer.The incidence and severity of pain increased with the progression of pancreatic cancer.
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This is an in vitro study designed to assess the effect of temperature variation on the heart function of the five-strip eyebrow squirrel--amammal of the hibernating kind. A heart model of exsomatizing action and for determining the physiological parameters with four physiological recorders was used to measure the LVSP, LVEDP and (+/- dP/dtmax), respectively. It was found that the curves of the squirrel's heart mechanics property in relation to temperature variation are similar to the curves of the non-hibernating animals'. But, the squirrels' heart contraction function changes with in a much wider range, suggesting that their hearts are more tolerant of temperature variation.
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Animals , Female , Male , Biomechanical Phenomena , Heart , Physiology , Hibernation , In Vitro Techniques , Myocardial Contraction , Sciuridae , Physiology , TemperatureABSTRACT
Objective To understand the differences of residents'compliance through stool and serum examinations on schistosomiasis and evaluate the effect of schistosomiasis surveillance and control in Jiangshan City.Methods The local residents and floating population from 9 villages were sampled with the stratified cluster method and investigated for schistosomiasis through the stool examination(Kato-Katz technique)and serum examination(ELISA),and the results were analysed.Results The rates of the examination accepted of the 1st stool,2nd stool and serum were 92.2%,89.7% and 99.7%,respectively.There were significant differences of the rates of the stool examination accepted in different groups of age and education background(P