Objective To evaluate the performance of T-SPOT.TB Test and serological tuberculosis antibody(TB-Ab) in tuberculosis-assisted diagnosis.Methods Patients were diagnosed as tuberculosis from 2015 January to 2016 March in the hospital.T-SPOT.TB and tuberculosis antibody detection were performed for those patients.Results In 112 cases of tuberculosis patients,101 cases of T-SPOT.TB test were positive and the sensitivity was 90.18%,32 cases of tuberculosis antibody detection were positive and the sensitivity was 28.57%.In 41 cases of pulmonary tuberculosis,T-SPOT.TB assay showed positive results in 40 patients and the sensitivity was 97.56%,tuberculosis antibody detection showed positive results in 18 patients and the sensitivity was 43.9%;in 71 cases of extrapulmonary tuberculosis,T-SPOT.TB assay showed positive results in 61 patients and the sensitivity was 85.91%,tuberculosis antibody detection showed positive results in 14 patients and the sensitivity was 19.7%.Conclusion T-SPOT.TB was superior to serological tuberculosis antibody(TB-Ab),and the diagnosis of active tuberculosis was higher,and the sensitivity of T-SPOT.TB was higher than that of T-SPOT.TB value.

OBJECTIVETo analyze the imaging features of osteopoikilosis and its diagnosis knowledge.

METHODSThe imaging data of 9 patients with osteopoikilosis were analyzed retrospectively, including 6 familial cases and 3 sporadic cases. In 6 familial cases,there were 4 males and 2 females with an average age of 28 years old ranging from 10 to 63 years. Clinical manifestations of 1 familial case were left knee pain and limitation of activity for 3 years, and other 5 cases without clinical manifestation. In 3 sporadic cases, there were 2 males and 1 female with an average age of 33.7 years old ranging from 25 to 44 years. Three sporadic cases had obvious injury history with following up from 6 to 12 months. All imaging results of 9 cases were observed.

RESULTSThe imaging data of 6 familial osteopoikilosis showed the multiple round or oval nodes within bone with clear margins, uniform density, different size. The occurrence of the hyperostotic spots preferentially localized in the epiphyses and metaphyses of the long bones, and carpus and tarus. X-ray features of 3 sporadic osteopoikilosis were similar to that of 6 familial cases and for 6 to 12 months follow-up X-ray features were unchanged.

CONCLUSIONThe imaging features of osteopoikilosis are relatively specific such as the multiple mottling dense focal within bone with clear border and bilateral symmetry, and the focus located on cancellous bone and the diaphyses usually is unaffected. The imaging is a valuable examination for the accurate diagnosis of osteopoikilosis.

Adolescent ; Adult ; Child ; Female ; Humans ; Male ; Middle Aged ; Osteopoikilosis ; diagnosis ; diagnostic imaging ; Pedigree ; Radiography ; Young Adult

PurposeTo investigate the image quality of Dual Source CT (DSCT) high pitch prospective scan in acute chest pain examination by using triple-rule-out (TRO) protocol and its responses to heart beat rate change.Materials and Methods Thirty-two consecutive patients who planned to undergo TRO acute chest pain examination were enrolled and randomly divided into research group and control group. The conventional retrospective spiral scanning protocol was applied to the patients in the control group, while the high pitch prospective spiral scanning mode was used in the research group. CT value, noise level, SNR, CNR and radiation dosage in aorta and pulmonary arteries were recorded and compared between the two groups, and the image quality of the coronary arteries was scored subjectively.Results No significant difference was found in the aspects such as CT value, noise level, SNR, CNR radiation dosage in aorta and pulmonary arteries (P>0.05); however, the subjective scoring for coronary artery in the research group (85.5%) was significantly lower than that in the control group (93.9%) (χ2=8.33,P<0.05). Considering the influence of severe heart rate changes, we excluded those patients whose heart rate variance was more than 5 beats/min (control group:n=5; research group:n=4) and then compared the image quality of the two groups again. The subsequent results showed no difference (χ2=0.12,P>0.05). In addition, the radiation dosage in the control group was significantly higher than that in the research group [(20.8±6.2) mSvvs. (2.3±0.4) mSv;t=17.142,P<0.01].Conclusion DSCT high pitch prospective scanning in TRO protocol shows high success rate in examining patients with acute chest pain whose heart beat rate is lower than 80 beats/min and heart beat variance is less than 5 beats/min. The image quality has no difference with that derived from retrospective scan but with far more less radiation dose (2.3±0.4) mSv. This method thus is promising and can be widely promoted clinically.

Objective:To identify the healing effect of electrospun silk fibroin-BMP-2 as a biologic pulp capping agent to inflammatory pulp in rat caused by lipopolysaccharide ( LPS) .Methods:A total of 30 healthy adult male Wistar rats were randomly divided into five groups:(1) normal control group without operation;(2) blank control group without capping agents;(3) calcium hydroxide capping group;(4) electrospun silk fibroin capping group;(5) electrospun silk fibroin-BMP-2 capping group .Bilateral up-per first molars of each rat in group 2-5 were drilled to expose the pulp to LPS which was used to estab-lish a model of inflammatory pulp .The exposed pulp was capped with different capping agents or without capping agents.Then the hole was sealed.The animals were sacrificed on days 3, 7, and 14 post-opera-tion and histological analysis was carried out , including HE stain and CD 14 immunohistochemical stain . Results:On day 7 and 14 , the lowest inflammatory reaction score in HE stain among pulp capping groups was that of silk fibroin-BMP-2 group .The next were calcium hydroxide group and silk fibroin group .That of blank control group was the highest .The ranking of reparative dentine scores of those groups was just reversed.The D values of immunohistochemical stain of CD 14 were not significantly different in groups applied pulp capping agents but significantly lower than blank control group on days 3 and 7.However, the D value of silk fibroin-BMP-2 group ( 0 .145 ±0 .011 ) was significantly lower than blank control group (0.287 ±0.019), calcium hydroxide group (0.170 ±0.017) and silk fibroin group (0.175 ± 0 .018 ) on day 14 .Conclusion:Electrospun silk fibroin compounded with BMP-2 promoted wound hea-ling of exposed pulp and had better potential to stimulate formation of reparative dentine to establish a suitable environment for pulp recovery .

[Abstract ] Objective To evaluate the inhibitory effect of chlorogenic acid on senescence of human skin fibroblasts (HSFs). Methods Fibroblasts isolated from human foreskin were treated with 1 mmol/L glyoxal in vitro to develop a model for cellular senescence. In order to select effective concentrations of chlorogenic acid, some HSFs were treated with 1 mmol/L glyoxal alone or in combination with chlorogenic acid at different concentrations (5, 10, 20, 40, 80 μmol/L)for 3 days, with those receiving no treatment serving as the blank control group. Then, methyl thiazolyl tetrazolium (MTT)assay was performed to evaluate the proliferative activity of HSFs. Some HSFs were divided into 5 groups to be cultured alone(blank control group), or treated with 1 mmol/L glyoxal(glyoxal group)or the combination of 1 mmol/L glyoxal and chlorogenic acid at effective concentrations of 10, 20 and 40 μmol/L (glyoxal + chlorogenic acid groups). Senescence associated β-galactosidase (SA-β-gal)staining and real-time fluorescence-based quantitative PCR were conducted to determine the percentage of senescent cells and expression level of p16INK4a mRNA respectively. Statistical analysis was carried out by one-way analysis of variance followed by the least significant difference(LSD)-t test. Results Compared with the blank control group, the glyoxal group showed significantly decreased cellular proliferative activity of HSFs (55.65% ± 2.00% vs. 100% ± 6.90%, P < 0.01), while chlorogenic acid increased the proliferative activity of HSFs in a dose-dependent manner, and the increase reached a peak at 40 μmol/L. Concretely speaking, the glyoxal + 10-, 20-, 40-, 80-μmol/L chlorogenic acid groups all significantly differed from the glyoxal group in cellular proliferative activity (60.75% ± 1.32%, 67.65% ± 1.90%, 75.71% ± 3.25% and 75.69% ± 2.38% vs. 55.65%± 2.00%, all P < 0.05), but no significant difference was observed between the glyoxal group and glyoxal + 5-μmol/L chlorogenic acid group or between the glyoxal + 40-μmol/L chlorogenic acid group and glyoxal + 80-μmol/L chlorogenic acid group (both P > 0.05). Therefore, 10 - 40 μmol/L was selected as the effective concentrations of chlorogenic acid. The glyoxal group showed significant increases in the percentage of senescent (SA-β-gal-positive)cells (35.65% ± 2.24% vs. 13.00% ± 2.22%, P < 0.01)and expression level of p16INK4a mRNA (2-ΔΔCt: 1.00 ± 0.06 vs. 0.26 ± 0.05, P <0.01)compared with the blank control group, while the glyoxal + 10-, 20-, 40-μmol/L chlorogenic acid groups showed significantly decreased percentage of senescent cells (31.50% ± 2.13% , 22.31% ± 3.11% and 19.32% ± 3.01%respectively)and expression level of p16INK4a mRNA (2-ΔΔCt: 0.88 ± 0.08, 0.73 ± 0.06 and 0.68 ± 0.04 respectively) compared with the glyoxal group (all P < 0.05). Additionally, the percentage of senescent cells decreased with the increase in chlorogenic acid concentrations in the glyoxal + chlorogenic acid groups. Conclusion Chlorogenic acid can protect HSFs from glyoxal-induced senescence.

BACKGROUND:Previous studies have indicated that ulinastatin can inhibit RANKL-induced osteoclastogenesis on RAW264.7 cells and also lower matrix metal oproteinase-9 expression and activity. However, it remains be unclear whether ulinastatin has the intervention effect on polymethyl methacrylate (PMMA)-induced MC3T3-E1 mouse preosteoblast apoptosis or not. ＜br> OBJECTIVE:To explore the intervention role of ulinastatin on the PMMA-induced MC3T3-E1 mouse preosteoblast apoptosis and its effects on type I col agen, osteocalcin, matrix metal oproteinase-2 mRNA expression. ＜br> METHODS:MC3T3-E1 mouse preosteoblasts at passages 6 and 7 were divided into four groups:blank group (only cultured MC3T3-E1 mouse preosteoblast), PMMA-induced group (MC3T3-E1 mouse preosteoblast+1 g/L PMMA bone cement suspension), low dose ulinastatin group (MC3T3-E1 mouse preosteoblast+1 g/L PMMA bone cement suspension+500 U/mL ulinastatin) and high dose ulinastatin group (MC3T3-E1 mouse preosteoblast+1 g/L PMMA bone cement suspension+5 000 U/mL ulinastatin). MTT method was adopted to detect the proliferation activity of proliferative activity of MC3T3-E1 mouse preosteoblast;alizarin red staining method was used to observe mineralization nodules of MC3T3-E1 mouse preosteoblast among different groups;the change of apoptosis rate for MC3T3-E1 cells was detected by flow cytometry analysis;semi-quantitative RT-PCR was taken to analyze type I col agen, osteocalcin, matrix metal oproteinase-2 mRNA expression level in MC3T3-E1 mouse preosteoblasts among different groups. ＜br> RESULTS AND CONCLUSION:Compared with the blank group, PMMA significantly inhibited the proliferation activity of MC3T3-E1 mouse preosteoblast (P＜0.05), and however significantly promoted cells apoptosis (P＜0.05). After addition of different concentrations of ulinastatin (500, 5 000 U/mL), the proliferation activity of MC3T3-E1 mouse preosteoblasts significantly raised (P＜0.05), and cells apoptosis rate significantly decreased (P＜0.05), showing the dose and time-dependent relation. Type I col agen and osteocalcin mRNA expression levels both significantly decreased after co-culture in PMMA group compared with the blank group (P＜0.05), matrix metal oproteinase-2 mRNA expression level, however, significantly increased (P＜0.05). After intervention with 5000 U/mL ulinastatin, type I col agen and osteocalcin mRNA expression levels both significantly increased, while matrix metal oproteinase-2 mRNA expression level significantly decreased (P＜0.05). PMMA group showed no obvious mineralization nodules. Yet, mineralization nodules were formed in the blank group, high and low dose ulinastatin groups. These results indicate that ulinastatin could have the inhibitory effect on the PMMA-induced MC3T3-E1 mouse preosteoblast apoptosis, and it could promote type I col agen and osteocalcin mRNA expression and yet suppress matrix metal oproteinase-2 mRNA expression.

OBJECTIVETo observe the effects of electroacupuncture (EA) on circadian rhythm of temperature and melatonin (MT) in depression rats model induced by chronic stress, so as to explore the biological mechanism of EA for depression.

METHODSTwenty-four SD rats were randomly divided into a control group, a model group and an EA group, 8 cases in each one. Rats in the control group were treated with normal diet for 21 days without any treatment. In the model and EA group, rat model was established by chronic unpredictable stress combined with solitarily feeding method, and rats in the EA group was treated with EA at "Baihui" (GV 20), "Yintang" (GV 29) 1 h before stress stimulation everyday, 2 Hz in frequency and intensity was favorable with the head of rat slightly shivering. The needles were retained for 20 min, once a day for totally 21 days. After EA treatment, open-field experiment was adopted to observe the behavioral improvement; the rats temperatures were monitored at six time points (2:00, 6:00, 10:00, 14:00, 18:00, 22:00) and orbital blood sampling was collected. The level of serum MT was tested by enzyme linked immunosorbent assay. The circadian rhythm changes of temperature and serum MT in each group were compared.

RESULTSThe numbers of horizontal movement and vertical movement in the model group were obviously lower than those in the control group (both P < 0.05), while those in the EA group were significantly improved compared with those in the model group (both P < 0.01). The circadian rhythm of temperature and MT disappeared in the model group, which was improved into normal level after EA treatment.

CONCLUSIONThe electroacupuncture has regulation effects on circadian rhythm of temperature and melatonin in depression rat model induced by chronic stress.

Animals ; Circadian Rhythm ; Depression ; metabolism ; physiopathology ; therapy ; Electroacupuncture ; Humans ; Male ; Melatonin ; metabolism ; Rats ; Rats, Sprague-Dawley

OBJECTIVETo observe the change of nephron damaged by chemotherapy and to evaluate the effect of Baoshen Mixture (, BSM) in protecting and treating damaged nephrons.

METHODSFour hundred tumor patients with normal renal function and ready to receive chemotherapy were randomly assigned to two groups. Both groups received one cycle of chemotherapy program of 28-30 days with conventional hydratization, alkalization and chloridization. To the 200 cases in the treated group BSM was given orally thrice a day, 150 mL every time for 15 successive days and the other 200 cases in the control group were treated by chemotherapy alone. The clinical efficacy was compared after treatment, and the changed condition of damaged nephrons were monitored dynamically and compared at different time points (the 3rd, 7th, 14th and 21st day after chemotherapy) by measuring the micro-globulin beta(2) (beta(2)-MG), albumin (Alb) and immunoglobulin G (IgG) levels in urine with radioimmunoassay (RIA).

RESULTS(1) The effective rates in the treated group at the 4 time points of observation were all higher than those in the control group respectively (P<0.05 or P<0.01); (2) Less occurrence of abnormal beta(2)-M, Alb and IgG levels on the 14th and 21st day in the treated group took place compared to that in the control group (P<0.01); (3) Urinary levels of beta(2)-MG, Alb and IgG reached the peak on the 7th day in both groups, and then, they came down gradually and returned to the normal level on the 21st day. However, comparison between the two groups showed that all the three parameters in the treated group on day 3, 14 and 21 were lower than the respective one at the corresponding time points in the control group (P<0.05 or P<0.01).

CONCLUSIONThe chemotherapy damage on nephron is regular in time, and reversible when treated suitably. TCM shows a marked effect in protecting and treating the damage on nephron caused by chemotherapy.

Adult ; Aged ; Albuminuria ; prevention & control ; Antineoplastic Agents ; adverse effects ; Drugs, Chinese Herbal ; therapeutic use ; Female ; Humans ; Immunoglobulin G ; urine ; Male ; Middle Aged ; Nephrons ; drug effects ; beta 2-Microglobulin ; urine

Objective To observe the combined poisonous effects of fluoride and aluminum on sex hormone of male rats.Methods Sixteen weaned SD healthy male rats aged two week were selected and divided into control group,aluminum group,fluoride group,fluorine-aluminum group,four rats in each group.All rats in the experimental groups were fed with corn collected from the prevailng areas containing different fluorine contents respectively for 90 days.Serum testosterone(T)and estradiol(E2)were detected.Results Compared separatelv with the control group[(3.317±0.635)μg/L],serum T level of fluorine-aluminum group[(15.994±6.558)μg/L]was higher(P＜0.05),but aluminum[(8.134±3.134)μg/L]and fluorine[(1.868±0.367)μg/L]groups had no significant differences(P＞0.05).Compared separately with the control group[(0.319±0.072)nmol/L],E2 level of the fluorine group[(0.172±0.030)nmol/L]being lower(P＜0.05),and it was not significant differences(P＞0.05)in the control group when compared with aluminum group[(0.282±0.012)nmol/L],and fluorine-aluminum group[(0.265±0.047)nmol/L].Fluorine and aluminum interacted with each other(F=9.82,P＜0.05).Conclusion The combined poisonous effects of fluorine and aluminum may influence sex hormone levels of male rats.

Objective To compare the efficacy of the conventional PPD skin test and a new enzymelinked immunospot assay(TSPOT-TB)for diagnosing latent tuberculosis infection(LTBI)in patients with rheumatic diseases.Methods Two hundred and sixty rheumatic patients were enrolled,and all were screened for LTBI based on clinical history,chest X-ray,PPD skin test or TSPOT.Results The positive rate of TSPOT assay was 24.1%and that of PPD skin test was 39.4%.The overall concordance rate between the 2tests was 61.0%.Among PPD negative patients (n=149).29 were TSPOT(+)(19.5%).Among PPD(+)patients(n=98),69 were TSPOT(-)(70.0%).The patients who got BCG vaccination or had history of tuberculosis infection showed a significantly higher rate of positive result of PPD skin test than those who did not (P<0.05 or P<0.01).While in TSPOT assay,the BCG vaccination or history of tuberculosis infection did not show influence on TSPOT results(P>0.05).Of the 127 patients who received biological agents after screening for LTBI,9 patients were pretreated with isoniazide.Twenty-seven patients stopped biological agent treatment because of the positive results of PPD or TSPOT.Twenty three patients who had positive PPD but negative TSPOT results received biological agent treatment without isoniazide,and none of them developed active tubereulosis after 6 to 18 months of follow-up.Conclusion BCG vaccination affects the result of PPD test in rheumatic patients,but has no influence on TSPOT results.The infection rate of latent tuberculosis of rheumatic patients in our research is 23.8%detected by TSPOT.