Objective　To assess the CT manifestations and diagnostic value in the pancreatic tuberculosis(PTB)with review of the literatures. Methods　All cases of PTB proved by surgery or biopsy were examined with plain and enhanced CT scans. Results　The CT findings in one case with multiple-nodular type of PTB were diffuse enlargement of the pancreas with multiple, nodular, and low-density lesions; The nodular lesions had peripheral enhancement. 7 cases of local type of PTB encroached on pancreatic head. 4 cases showed local soft tissue masses with multiple flecked calcifications in 2 cases and mild enhancement in one case; Cystic masses was found in 2 cases, with mural calcification in 1 case and multiloculated cystic mass in 1 case, respectively; Massive pancreatic head calcification was demonstrated in one case. In these 8 cases of PTB, the lesion extended out of pancreas in 4 cases, including abdominal tuberculous lymph nodes, tuberculous peritonitis, and hepatosplenic tuberculosis. Conclusion　CT findings of PTB were various but had some characteristics. Pancreatic masses with multiple flecked calcification or mild enhancement could suggest the diagnosis. Abdominal tuberculosis accompanied with the pancreatic lesion, especially tuberculous lymph nodes, was highly suggestive of the diagnosis of PTB.

Case based learning ( CBL ) teaching method was applied to the experiment group in radiology internship teaching,and conventional teaching in control group.Two mentors would evaluate and score their radiological case analysis.The aim of this research was to explore the application and effect of case-based learning ( CBL ) teaching method in radiology internship teaching.

OBJECTIVEThis study is to establish the fingerprint and find out the common chromatographic peaks of Inula cappa by HPLC.

METHODThe HPLC analysis was performed on an Agilent Eclipse Plus C18 column (2.1 mm x 150 mm, 1.8 μm) with 0.1% fomic acid aqueous solution-0.1% fomic acid acetonitrile solution as mobile phase at a flow rate of 0.3 · mL(-1) · min(-1); The detective wavelength is 325 nm; The column temperature is 45 °C.

RESULTThe results indicated that 5 of 17 common peaks were identified . The similarity about 10 groups of Inulacappais is over 0.95.

CONCLUSIONThis method is able to be a scientific basis of quality assessment according to its convenient and reliable.

Chromatography, High Pressure Liquid ; methods ; Drugs, Chinese Herbal ; analysis ; Inula ; chemistry

Objective To investigate etiology of acute pneumonia in children in order to provid basis for clinical diagnosis and treatment.Methods The children with acute pneumonia who were hospitalized in children's hospital affiliated to Suzhou university were selected.And the sputum of them were collected.Bacteria and virus were tested using sputum culture and direct immunofluoresence respectively.Antibodies against mycoplasma and chlamydia were detected by enzymelinked immunosorbent assay(ELISA) in paired sera. Results Microbial etiology was obtained in 360 cases (67.7%) of 532 patients.Viral infections were in 178 cases (33.5%).Bacterial infections were in 23 cases (4.3%),mycoplasma pneumoniae 50 cases (9.4%) and chlamydia pneumoniae 19 cases (3.6%),compound infections 90 cases (16.9%).Respiratory syncycial virus was the major viral pathogen,streptococcus pneumoniae were the prominent pathagens of bacterial pneumonia,followed by haemophilus influenza.Conclusions Viral infection is the most common cause of acute pneumonia in children in Suzhou area during winter and spring,followed by mycoplasma pneumoniae,bacteria and chlamydia pneumoniae.Mycoplasma pneumoniae infection is more common in children older than 3 years,chlamydia pneumoniae infection is more in infants less than 3 months,most of compound infection children were below the age of 3 years.

Objective: To explore the mechanism of acupuncture in regulating cognitive deficits in insomnia rats by observing the effect of acupuncture on microglia in thalamic reticular nucleus (TRN). Methods: Thirty rats were randomly divided into a control group, a model group and an acupuncture group, with 10 rats in each group. The insomnia model was established by intraperitoneal injection of para-chlorophenylalanine (PCPA) once a day for 2 d. Rats in the control group were intraperitoneally injected with the same amount of normal saline. Rats in the acupuncture group received acupuncture at Neiguan (PC 6) and Zusanli (ST 36) for 5 consecutive days. The CLOCKLAB 2 data acquisition system was used to dynamically observe the sleep of the rats throughout the experiment. The cognition of rats was evaluated by event-related potentials (ERPs). After intervention, brain tissue was extracted. Immunofluorescence was used to test the fluorescence expression in TRN region. The concentrations of interleukin (IL)-1β and tumor necrosis factor (TNF)-α were detected by enzyme-linked immunosorbent assay. Results: After intraperitoneal injection of PCPA suspension, the spontaneous activity in light period of rats in the model group and acupuncture group increased significantly compared with the control group (both P<0.01). After acupuncture treatment, the rats in the acupuncture group had much less spontaneous activity during the light period than those in the model group (P<0.01), and the results indicated that acupuncture could effectively improve the sleep quality of insomnia rats. Compared with the control group, rats in the model group showed that the P3 latency, the average optical density of microglia, and the concentrations of IL-1β and TNF-α increased significantly (all P<0.05), and the P3 amplitude decreased significantly (P<0.01). Compared with the model group, rats in the acupuncture group presented that the P3 latency, the average optical density of microglia, and the concentrations of IL-1β and TNF-α were significantly decreased (all P<0.05), and the amplitude of P3 was significantly increased (P<0.05). Conclusion: Acupuncture possesses an ability to improve the cognitive state in insomnia rats. The mechanism may be related to inhibiting the microglial activation, diminishing the levels of pro-inflammatory mediators like IL-1β and TNF-α, and promoting the recovery of central nervous system function.

Objective - （ ） To analyze the epidemiological characteristics of occupational noise induced deafness ONID （ ） diagnosed by Guangdong Province Hospital of Occupational Disease Prevention and Control GDHOD from 2016 to 2020 and - Methods the reasons non ONID diagnosis. The data of ONID patients diagnosed in GDHOD from 2016 to 2020 were collected “ from the Occupational Disease Report Card in the Occupational Disease and Occupational Health Information Monitoring ” “ ” - System subsystem of the China Disease Prevention and Control Information System . The data of non ONID subjects were ， collected from the occupational disease diagnosis archives in the same hospital and the relevant data were analyzed Results ， ， （ ） retrospectively. Of the 1 432 subjects 824 subjects were diagnosed as ONID patients mainly of mild ONID 86.0% . （M） ， M Male patients accounted for 88.0%. The median of diagnosis age was 45.0 years old and of length of employment of ， ， ， diagnosis was 8.3 years. ONID patients were mainly found in Zhongshan Dongguan Zhuhai Jiangmen and Guangzhou City in ， ， （ ） the Pearl River Delta accounting for 67.6%. The cases distributed in 519 enterprises mainly on manufacturing 90.2% . ， - ， ； Among the 139 enterprises each enterprise had 2 11 patients worked within five years accounting for 53.9% 91.1% of the -， - - - ONID patients were distributed in large medium and small enterprises. ONID patients mainly worked in non public enterprises that accounted for 91.3%. There were 606 subjects could not be diagnosed as ONID. The main reasons for not being （ ）， diagnosed were that the weighted value of better ear hearing threshold was less than 26 dB 34.8% the working history of （ ）， occupational noise exposure was less than three years 31.5% the weighted value of better ear hearing threshold was less thanConclusion 26 dB and the average hearing threshold of binaural high frequency was less than 40 dB 16.2% . The ONID ， ， -， - patients have the characteristics of group aggregation. The Pearl River Delta manufacturing industry large medium and - - ： small non public enterprises are the key points of ONID prevention. The main reasons for not being diagnosed as ONID were ， the working history of occupational noise exposure was less than three years the weighted value of better ear hearing threshold ， - was less than 26 dB and the average high frequency hearing threshold of both ears was less than 40 dB.

OBJECTIVEThis study was designed to explore the effects of zinc on bone development.

METHODSForelimbs of mice with 16 d gestation were cultured by a rotating device.

RESULTSContents of OC and (45)Ca and activities of AKP in the bone tissues cultured at zinc-deficiency media and at media with 120 micro mol/L of Zn(2+) decreased significantly. Synthesis of OC, absorption of calcium and activities of AKP in the bone tissues cultures at media with 45 and 70 micro mol/L of Zn(2+) increased significantly. Radiograph of bone tissues showed that length of long bone cultured at zinc-deficiency media and at media with 120 micro mol/L of Zn(2+) shortened and their density reduced, and those cultured at media with 45 and 70 micro mol/L of zinc increased, as compared with self-control bone. Histological analysis showed the death of bone cells and loss of stroma in the bone tissues cultured at media with 120 micro mol/L of Zn(2+), and active proliferation and differentiation of bone cells, and secretion and synthesis of osteoid increased in the bone tissues cultured at media with 45 and 70 micro mol/L of zinc.

CONCLUSIONSAdequate supplementation of zinc could promote formation and development of bone tissues and deficiency or excess of zinc could alter their growth and development and normal metabolism.

Animals ; Bone Density ; drug effects ; Bone Development ; drug effects ; Calcium ; metabolism ; Embryo, Mammalian ; drug effects ; physiology ; Extremities ; embryology ; Female ; Insulin-Like Growth Factor II ; Male ; Mice ; Proteins ; metabolism ; Zinc ; pharmacology

UL48 plays essential role in replication of MDV genome and interacts with UL36 as well as other MDV tegument proteins.To investigate the interaction between UL48 and UL36 during MDV oncogenisis,antibody against UL48 was prepared and characterized in current study.UL48 gene was amplified from MDV-Ⅰ genome and then subcloned into pTYB1 and pGEX-4T3 vectors for UL48 expression with induction of IPTG in BL21(DE3) E..coli cells.Chitin-sepharose and Glutathion-sepharose were,respectively,used to purify fusion protein intein-UL48 and GST-UL48.Four subcutaneous injections of intein-UL48 fusion protein were done on the lower back and the thigh of rabbit and then other three injections with an interval 10 days.The titer of antibody was measured by the sandwich ELISA with UL48 protein isolated from GST-UL48 after cleavage of thrombin.Western blot was carried out for specificity analysis of antibody against UL48 protein.The results suggested that UL48 antibody was succesfully prepared,and its titer was 1 ∶ 512 000.

Our previous studies showed that the proto-oncogene c-erbB₂ played an important role in primordial follicles growth. The present study was conducted to investigate the role of MAPK and PKC signaling pathways in the primordial follicle onset in neonatal rats, and the relationship between c-erbB₂ and MAPK/PKC signaling pathways. Ovaries collected from 2-day-old Sprague-Dawley rats were cultured in the Waymouth culture system in vitro. Ovaries were transfected with c-erbB₂ siRNA, or treated with PD98059 (50 mumol/L) or Calphostin (0.5 mumol/L) in the culture medium. RT-PCR was performed to measure the expression of c-erbB₂ mRNA, and Western blot analysis was performed to measure the expression of ErbB₂, MAPK and PKC protein after the neonatal rat ovaries were cultured for 8 d. The quantities of every-stage follicles of ovaries cultured for 8 d were obtained in histological section stained with hematoxylin eosin. The results showed that c-erbB₂ siRNA reduced the levels of c-erbB₂ mRNA (P<0.01) and the levels of ErbB₂, MAPK and PKC protein (P<0.01) significantly. But the levels of c-erbB₂ mRNA and ErbB₂ protein exhibited no change (P>0.05) in the ovaries cultured with PD98059 or Calphostin. After the ovaries were transfected with c-erbB₂ siRNA or cultured with PD98059 or Calphostin for 8 d, the quantities of primary follicles and second follicles were lower than those in the control group (P<0.05 or P<0.01), but the quantity of the primordial follicles was higher than that in the control group (P<0.01). These results suggest that proto-oncogene c-erbB₂ promotes the initiation of primordial follicle growth through the MAPK and PKC signal transduction, and c-erbB₂ is possibly the upstream of PKC and MAPK signaling pathway in the regulation of primordial follicle onset.
Animals ; Animals, Newborn ; Enzyme Inhibitors ; pharmacology ; Female ; Flavonoids ; pharmacology ; MAP Kinase Signaling System ; Naphthalenes ; pharmacology ; Ovarian Follicle ; metabolism ; Protein Kinase C ; metabolism ; RNA, Messenger ; metabolism ; RNA, Small Interfering ; Rats ; Rats, Sprague-Dawley ; Receptor, ErbB-2 ; metabolism ; Signal Transduction

Objective To study the effect of enalapril folic acid on peripheral blood inflammatory factors in type H hypertensive of rats.Methods Sixty Wistar Spontaneous hypertension male rats were randomly divided into control group,model group,enalapril group and enalapril folic acid group,15 rats in each group.Type H hypertensive rat model were established by feeding with 3％ methionine in model group,enalapril group and enalapril folic acid group.And enalapril folic acid group were given 10 mL · kg-1 enalapril maleate folic acid solution,enalapril group were given 10 mL · kg-1 enalapril solution,and the model group were given 10 mL · kg-1 double distilled water,and 4 groups were intervened for 8 weeks everyday.The serum levels of homocysteine (Hcy),serum tumor necrosis factor alpha (TNF-α),hypersensitivity C reactive protein (hs-CRP)and soluble OX40 ligand(OX40L) were measured by enzyme-linked immunosorbent assay.The nitric oxide(NO)level were measured by End-point assay.The structure of carotid artery was observed under microscope.Results Compared with Hcy(64.22 ±6.82) μ mol · L-1 and NO(41.45 ±5.25) μmol · L-1 in the enalapril group,levels of Hcy(19.75 ±2.14) μmol · L-1 were lower,and NO(57.68 ±6.43) μmol · L-1were higher in the enalapril folic acid group with significantly (P ＜ 0.05).Compared with TNF-α (72.72 ± 6.89) pg · mL-1,hs-CRP (1.15 ±0.12) pg · mL-1,OX40L(5.24 ±0.47) ng · mL-1in the enalapril group,levels of TNF-α(58.18 ±5.76)pg · mL-1,hs-CRP(0.86-±0.11) pg · mL-1,OX40L(3.03 ±0.39) ng · mL-1 were lower in the enalapril folic acid group with significantly(P ＜0.05).Compared with the carotid artery IMT (61.14±7.73) μm,and IMCSA levels(0.12 ± 0.02) mm2 in the enalapril group,the carotid artery IMT (52.74±6.29)μm,and IMCSA (0.10 ±0.01) mm2 in the enalapril folic acid group were lower with significantly(P ＜ 0.05).Compared with the levels of carotid artery LD(951.38 ± 6.08) μm in the enalapril group,the levels of carotid LD (969.79 ± 6.17) μm in the enalapril folic acid group was higher with significantly(P ＜0.05).Conclusion enalapril folic acid can effectively reduce levels of peripheral blood Hey,TNF-oα,hs-CRP and OX40L in type H hypertensive rats,improve levels of NO,reduce inflammation,and improve the structure of carotid artery.