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1.
Chinese Journal of Anesthesiology ; (12): 597-601, 2023.
Article in Chinese | WPRIM | ID: wpr-994237

ABSTRACT

Objective:To evaluate the effect of superior cervical ganglion block (SCGB) on cardiac function and nucleotide like receptor protein 3 (NLRP3) signaling pathway in a rat model of myocardial ischemia-reperfusion (I/R).Methods:Sixty healthy SPF male Sprague-Dawley rats, weighing 250-300 g, aged 2-3 months, were divided into 4 groups ( n=15 each) using a random number table method: sham operation group (sham group), myocardial I/R group (IR group), myocardial I/R + normal saline group (IR+ NS group), and myocardial I/R + SCGB group (IR+ SCGB group). Myocardial I/R model was developed by ligation of the left anterior descending branch of the coronary artery for 45 min followed by restoration of blood flow in anesthetized aninals. IR+ SCGB group received SCGB (0.25% ropivacaine 0.1 ml) at 10 min before reperfusion once a day for 2 consecutive weeks, while 0.9% sodium chloride was given instead of ropivacaine in IR+ NS group. Blood samples were collected at 24 h and 14 days of reperfusion for determination of serum concentrations of norepinephrine (NE), troponin T (TnT), tumor necrosis factor-alpha (TNF-α), interleukin-18 (IL-18) and IL-1β by enzyme-linked immunosorbent assay. Echocardiography was performed before ischemia and at 14 days of reperfusion, and left ventricular short axis shortening rate (FS), ejection fraction (EF), and cardiac output (CO) were measured. The rats were sacrificed at 14 days of reperfusion and the hearts were taken for determination of the contents of norepinephrine (NE) in myocardial tissues in the infarction area (by enzyme-linked immunosorbent assay), percentage of myocardial fibrosis area (by Masson staining), M1 macrophage marker CD68 + cell count in the infarction area (by immunohistochemical method), and expression of NLRP3 and gasdermin D (GSDMD) in myocardial tissues (by Western blot). Results:Compared with Sham group, the serum concentrations of TnT, TNF-α, IL-18 and IL-1β, percentage of myocardial fibrosis area, and NE levels in serum and myocardial tissues were significantly increased, the expression of NLRP3 and GSDMD in myocardial tissues was up-regulated, CD68 + cell count was increased, and EF, CO and FS were decreased in IR group ( P<0.05). Compared with IR group, the serum concentrations of TnT, TNF-α, IL-18 and IL-1β, percentage of myocardial fibrosis area, and NE levels in serum and myocardial tissues were significantly decreased, the expression of NLRP3 and GSDMD in myocardial tissues was down-regulated, CD68 + cell count was decreased, and EF, CO and FS were increased in IR+ SCGB group ( P<0.05), and no statistically significant changes were found in the parameters mentioned above in IR+ NS group ( P>0.05). Conclusions:SCGB can improve the cardiac function in a rat model of myocardial I/R, and the mechanism may be related to the inhibition of NLRP3 signaling pathway.

2.
Journal of Biomedical Engineering ; (6): 1108-1116, 2022.
Article in Chinese | WPRIM | ID: wpr-970648

ABSTRACT

The skin is the largest organ of the human body, and many visceral diseases will be directly reflected on the skin, so it is of great clinical significance to accurately segment the skin lesion images. To address the characteristics of complex color, blurred boundaries, and uneven scale information, a skin lesion image segmentation method based on dense atrous spatial pyramid pooling (DenseASPP) and attention mechanism is proposed. The method is based on the U-shaped network (U-Net). Firstly, a new encoder is redesigned to replace the ordinary convolutional stacking with a large number of residual connections, which can effectively retain key features even after expanding the network depth. Secondly, channel attention is fused with spatial attention, and residual connections are added so that the network can adaptively learn channel and spatial features of images. Finally, the DenseASPP module is introduced and redesigned to expand the perceptual field size and obtain multi-scale feature information. The algorithm proposed in this paper has obtained satisfactory results in the official public dataset of the International Skin Imaging Collaboration (ISIC 2016). The mean Intersection over Union (mIOU), sensitivity (SE), precision (PC), accuracy (ACC), and Dice coefficient (Dice) are 0.901 8, 0.945 9, 0.948 7, 0.968 1, 0.947 3, respectively. The experimental results demonstrate that the method in this paper can improve the segmentation effect of skin lesion images, and is expected to provide an auxiliary diagnosis for professional dermatologists.


Subject(s)
Humans , Skin/diagnostic imaging , Algorithms , Clinical Relevance , Learning , Image Processing, Computer-Assisted
3.
Chinese Journal of Anesthesiology ; (12): 230-233, 2021.
Article in Chinese | WPRIM | ID: wpr-885064

ABSTRACT

Objective:To evaluate the effects of stellate ganglion block (SGB) on the activation of M1 microglia during cerebral ischemia-reperfusion (I/R) in rats.Methods:Fifty-four SPF healthy male Sprague-Dawley rats, aged 8-10 weeks, weighing 240-270 g, were divided into 3 groups ( n=18 each) using a random number table method: sham operation group (group Sham), cerebral I/R group (group IR) and SGB group.Blood vessels were only exposed, without occlusion in group Sham.Cerebral I/R was induced by occlusion of the middle cerebral artery for 90 min followed by reperfusion in group IR.Cervical sympathetic trunk transaction was performed to induce left SGB immediately after onset of reperfusion in group SGB.Blood samples were collected from the apex of the heart at 6, 12 and 24 h of reperfusion for determination of the concentrations of tumor necrosis factor (TNF)-α, interleukin (IL)-6, and IL-1β in the serum (using enzyme-linked immunosorbent assay). The animals were sacrificed after the neurological function was evaluated at 24 of reperfusion, and brain tissues were removed for microscopic examination of the pathological changes in cortex, for determination of percentage of cerebral infarct size (by TTC staining), for assessment of cell apoptosis and apoptosis rate in cortex (by TUNEL), and for determination of the expression of microglial biomarker Iba-1 and activated M1 microglia biomarker CD68 (by Western blot). Results:Compared with group Sham, the neurological function score, percentage cerebral infarct size, apoptosis rate in cortex, concentrations of TNF-α, IL-6 and IL-1β in the serum, and the expression of Iba-1 and CD68 were significantly increased in IR and SGB groups ( P<0.05). Compared with group IR, the neurological function score, percentage cerebral infarct size, apoptosis rate in cortex, concentrations of TNF-α, IL-6 and IL-1β in the serum, and the expression of Iba-1 and CD68 were significantly decreased in group SGB ( P<0.05), and the pathological changes of brain tissues were significantly attenuated in group SGB. Conclusion:The mechanism by which SGB reduces cerebral I/R injury is related to inhibiting activation of M1 microglia in rats.

4.
Chinese journal of integrative medicine ; (12): 339-344, 2020.
Article in English | WPRIM | ID: wpr-827469

ABSTRACT

OBJECTIVE@#To analyze the overall survival (OS) of elderly acute myeloid leukemia (AML) patients treated with oral arsenic-containing Qinghuang Powder (, QHP) or low-intensity chemotherapy (LIC).@*METHODS@#Forty-two elderly AML patients treated with intravenous or subcutaneous LIC (1 month for each course, at least 3 courses) or oral QHP (3 months for each course, at least 2 courses) were retrospectively analyzed from January 2015 to December 2017. The main endpoints of analysis were OS and 1-, 2-, 3-year OS rates of patients, respectively. And the adverse reactions induding bone marrow suppression, digestive tract discomfort and myocardia injury were observed.@*RESULTS@#Out of 42 elderly AML patients, 22 received LIC treatment and 20 received QHP treatment, according to patients' preference. There was no significant difference on OS between LIC and QHP patients (13.0 months vs. 13.5 months, >0.05). There was no significant difference on OS rates between LIC and QHP groups at 1 year (59.1% vs. 70.0%), 2 years (13.6% vs. 15%), and 3 years (4.6% vs. 5.0%, all >0.05). Furthermore, there was no significant difference of OS on prognosis stratification of performance status > 2 (12 months vs. 12 months), age> 75 year-old (12.0 months vs. 12.5 months), hematopoietic stem cell transplant comorbidity index >2 (12 months vs. 13 months), poor cytogenetics (12 months vs. 8 months), and diagnosis of secondary AML (10 months vs. 14 months) between LIC and QHP patients (>0.05).@*CONCLUSION@#QHP may be an alternative treatment for elderly AML patients refusing LIC therapy.


Subject(s)
Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Antineoplastic Agents , Therapeutic Uses , Arsenicals , Therapeutic Uses , Drugs, Chinese Herbal , Therapeutic Uses , Leukemia, Myeloid, Acute , Drug Therapy , Mortality , Powders , Retrospective Studies
5.
Journal of Leukemia & Lymphoma ; (12): 361-365, 2020.
Article in Chinese | WPRIM | ID: wpr-862854

ABSTRACT

Objective:To investigate the relationship between TP53 gene mutation and overall survival (OS) time of myelodysplastic syndrome (MDS).Methods:Databases, including PubMed, Cochrane Library and Embase were searched for relevant studies published up to 20 October, 2019. The corresponding hazard ratio ( HR) and their 95% confidence interval ( CI) for OS from multivariate Cox proportional hazard models were extracted. The combined HR with their 95% CI was calculated by using fixed or random effect models. Meta-analysis was performed by using Revman 5.3 software. Results:A total of 1 033 patients from 6 studies were enrolled. Meta-analysis results showed that OS time in TP53 gene mutation group was shorter than that in wild type group for patients with MDS ( HR = 2.16, 95% CI 1.52-3.07, P < 0.01). The prognostic risk for post-transplantation patients with MDS ( HR = 2.69, 95% CI 1.63-4.43, P < 0.01) was lower compared with that for patients treated by azacitidine( HR = 2.89, 95% CI 1.37-6.08, P = 0.005). Conclusion:TP53 gene mutation is a risk factor affecting OS of MDS patients.

6.
Journal of Leukemia & Lymphoma ; (12): 361-365, 2020.
Article in Chinese | WPRIM | ID: wpr-862853

ABSTRACT

Objective:To investigate the relationship between TP53 gene mutation and overall survival (OS) time of myelodysplastic syndrome (MDS).Methods:Databases, including PubMed, Cochrane Library and Embase were searched for relevant studies published up to 20 October, 2019. The corresponding hazard ratio ( HR) and their 95% confidence interval ( CI) for OS from multivariate Cox proportional hazard models were extracted. The combined HR with their 95% CI was calculated by using fixed or random effect models. Meta-analysis was performed by using Revman 5.3 software. Results:A total of 1 033 patients from 6 studies were enrolled. Meta-analysis results showed that OS time in TP53 gene mutation group was shorter than that in wild type group for patients with MDS ( HR = 2.16, 95% CI 1.52-3.07, P < 0.01). The prognostic risk for post-transplantation patients with MDS ( HR = 2.69, 95% CI 1.63-4.43, P < 0.01) was lower compared with that for patients treated by azacitidine( HR = 2.89, 95% CI 1.37-6.08, P = 0.005). Conclusion:TP53 gene mutation is a risk factor affecting OS of MDS patients.

7.
Journal of Leukemia & Lymphoma ; (12): 523-526, 2019.
Article in Chinese | WPRIM | ID: wpr-798242

ABSTRACT

Objective@#To investigate the clinical effects of Qinghuang powder, low-intensity chemotherapy and Qinghuang powder alternated with low-intensity chemotherapy in the treatment of elderly acute myeloid leukemia patients progressed from myelodysplastic syndromes (MDS-AML).@*Methods@#A total of 32 elderly patients with MDS-AML treated in Xiyuan Hospital, China Academy of Chinese Medical Sciences from January 2014 to December 2017 were retrospectively analyzed. Of them, 12 patients received Qinghuang powder (Qinghuang powder group), 6 patients received Qinghuang powder alternated with low-intensity chemotherapy (alternating group), and 14 patients received low-intensity chemotherapy (low-intensity chemotherapy group), based on the real world of patient's voluntary choice of treatment. The efficacy and adverse reactions in the 3 groups were observed.@*Results@#The overall response number of Qinghuang powder, alternating, and low-intensity chemotherapy groups were 2, 2 and 4 cases, respectively, there was no significant difference among the 3 groups (P > 0.05). The median overall survival time of 3 groups were 14, 12 and 8 months, respectively, there was no significant difference among the 3 groups (P > 0.05). Two cases in Qinghuang powder group presented with gastrointestinal reactions; 3 cases in alternating group with myelosuppression, 2 cases with liver function damage, and 2 cases with gastrointestinal reaction; 11 cases in low-intensity chemotherapy group presented with bone marrow suppression, 3 cases with liver function damage, 7 cases with gastrointestinal reactions, and 2 cases with myocardial enzyme changes. The incidences of myelosuppression, liver function damage and myocardial enzyme changes in Qinghuang powder group were lower than those in the alternating group and low-intensity chemotherapy group.@*Conclusion@#The efficacy of Qinghuang powder or Qinghuang powder alternated with low-intensity chemotherapy for the treatment of elderly MDS-AML is not worse than the low-intensity chemotherapy, furthermore Qinghuang powder or Qinghuang powder alternated with low-intensity chemotherapy has fewer adverse reactions and better tolerance.

8.
Journal of Experimental Hematology ; (6): 149-158, 2019.
Article in Chinese | WPRIM | ID: wpr-774344

ABSTRACT

OBJECTIVE@#To analyze the consistency of gene mutation sites between bone marrow DNA (BM-tDNA) and perepheral plasma circulating tumor DNA (PP-ctDNA) in patients with myelodysplastic syndrome (MDS).@*METHODS@#The simultaneous sampled BM and PP from 19 patients (SBPP) was detected by NGS-127 gene panel, and the consistency of VAF between BM-tDNA and PP-ctDNA was analyzed. The peripheral blood cell tumor DNA (PC-tDNA) of 5 out of 19 patients was detected randomly, the consistency of VAF among PC-tDNA,BM-tDNA and PP-ctDNA was analyzed. The non simultaneous sampled BM and PP from 13 patients (NBPP) was detected, and the difference value of VAF between BM-tDNA and PP-ctDNA in SBPP and NBPP was analyzed.@*RESULTS@#The average concentration of PP-ctDNA in SBPP was 0.59 ng/µl and 0.604 ng/µl in NBPP. The median concentration of PP-ctDNA in SBPP and NBPP was 0.330 ng/µl and 0.338 ng/µl, respectively. The study showed a good consistency of VAF between BM-tDNA and PP-ctDNA in the SBPP (R=0.9693, P<0.05), and the consistency of VAF between BM-tDNA and PP-ctDNA in single base replacement (SNP) sites (R=0.9712) was better than that in insertion deletion (Indel) sites (R=0.6813). The results showed a good consistency of VAF between BM-tDNA and PP-ctDNA both in 12 patients before treatment (R=0.9325, P<0.05) and 5 patients (R=0.9875, P<0.05) after treatment. The results also showed that the VAF of PC-tDNA had a good consistency with the VAF of BM-tDNA (R=0.8783) and PP-ctDNA (R=0.8783) (P<0.05). The difference value of VAF between BM-tDNA and PP-ctDNA in SBPP was significantly lower than that in NBPP (P<0.05).@*CONCLUSION@#PP can replace BM as a biological sample for genes mutation detection in patients with MDS due to its stable concentration, high degree of consistency with bone marrow in clinical significant mutation sites and easy collection.


Subject(s)
Humans , Bone Marrow Neoplasms , Circulating Tumor DNA , DNA, Neoplasm , Mutation , Myelodysplastic Syndromes
9.
Journal of Leukemia & Lymphoma ; (12): 523-526, 2019.
Article in Chinese | WPRIM | ID: wpr-751436

ABSTRACT

Objective To investigate the clinical effects of Qinghuang powder, low-intensity chemotherapy and Qinghuang powder alternated with low-intensity chemotherapy in the treatment of elderly acute myeloid leukemia patients progressed from myelodysplastic syndromes (MDS-AML). Methods A total of 32 elderly patients with MDS-AML treated in Xiyuan Hospital, China Academy of Chinese Medical Sciences from January 2014 to December 2017 were retrospectively analyzed. Of them, 12 patients received Qinghuang powder (Qinghuang powder group), 6 patients received Qinghuang powder alternated with low-intensity chemotherapy (alternating group), and 14 patients received low-intensity chemotherapy (low-intensity chemotherapy group), based on the real world of patient's voluntary choice of treatment. The efficacy and adverse reactions in the 3 groups were observed. Results The overall response number of Qinghuang powder, alternating, and low-intensity chemotherapy groups were 2, 2 and 4 cases, respectively, there was no significant difference among the 3 groups (P> 0.05). The median overall survival time of 3 groups were 14, 12 and 8 months, respectively, there was no significant difference among the 3 groups (P> 0.05). Two cases in Qinghuang powder group presented with gastrointestinal reactions; 3 cases in alternating group with myelosuppression, 2 cases with liver function damage, and 2 cases with gastrointestinal reaction; 11 cases in low-intensity chemotherapy group presented with bone marrow suppression, 3 cases with liver function damage, 7 cases with gastrointestinal reactions, and 2 cases with myocardial enzyme changes. The incidences of myelosuppression, liver function damage and myocardial enzyme changes in Qinghuang powder group were lower than those in the alternating group and low-intensity chemotherapy group. Conclusion The efficacy of Qinghuang powder or Qinghuang powder alternated with low-intensity chemotherapy for the treatment of elderly MDS-AML is not worse than the low-intensity chemotherapy, furthermore Qinghuang powder or Qinghuang powder alternated with low-intensity chemotherapy has fewer adverse reactions and better tolerance.

10.
Journal of Leukemia & Lymphoma ; (12): 396-399, 2018.
Article in Chinese | WPRIM | ID: wpr-691644

ABSTRACT

Objective To investigate the survival of oral arsenic-containing Qinghuang Powder (QHP) and low intensive chemotherapy (LIC) in the treatment of elderly patients with acute myeloid leukemia (AML).Methods Forty-two AML patients older than 60 years in Xiyuan Hospital from January 2015 to December 2017 were retrospectively analyzed.Of them,20 cases were treated with QHP (QHP group),22 cases were treated with LIC (LIC group).The survivals of the two groups were compared.Results There was no significant difference of median survival time (13 months vs.13.5 months,x2 =0.096,P =0.757),1-year survival rates (59.1% vs.70.0 %,x2 =0.543,P =0.461),2-year survival rates (13.6 % vs.15.0 %,x2 =0.016,P > 0.05),and 3-year survival rates (4.6 % vs.5.0 %,x2 =0.005,P > 0.05) between LIC and QHP groups.There was no significant difference of median survival time in age ≥75 year (12 months vs.12.5 months,x2 =1.317,P =0.251),performance status scores > 2 (12 months vs.12 months,x2 =0.834,P =0.361),hematopoietic stem cell transplantation with combined disease index > 2 (12 months vs.13 months,x2 =1.726,P =0.189),secondary AML (10 months vs.14 months,x2 =1.552,P =0.213),and poor cytogenetics (12 months vs.8 months,x2 =0.479,P =0.489) between LIC and QHP group.Conclusion The survival of elderly AML patients is considerable in patients treated with oral QHP and LIC,which suggests that oral QHP may be an equivalent alternative treatment since elderly AML (especially more than 75 years) patients refused to LIC therapy.

11.
Journal of Experimental Hematology ; (6): 522-527, 2018.
Article in Chinese | WPRIM | ID: wpr-690956

ABSTRACT

<p><b>OBJECTIVE</b>To analyze the imbalance of pro-inflammatory and anti-inflammatory cytokines in the patients of immune thrombocytopenia (ITP).</p><p><b>METHODS</b>Thirty-five patients with ITP were enrolled in ITP group, while 28 healthy persons were included in control group. The expressions of IL-8, IL-17A, IL-22, TNF-α, IFN-γ, IL-4, CD40, CD40L, TGF-β and IL-10 were detected by flow cytometry with aimPlex multiple immunoassay Flow.</p><p><b>RESULTS</b>The expressions of pro-inflammatory factors IL-8, IL-17A, IL-22, IFN-γ and TNF-α in ITP group all were significantly higher than that in the control group (P<0.05), however the expressions of anti-inflammatory factors IL-4, CD40L, TGF-β and IL-10 in ITP group all were significantly lower than that in the control group (P<0.05). The expression of CD40 was not significantly different between ITP group and control group (P>0.05). Expressions of TNF-α significantly related with platelet counts in both ITP group and control group (ITP group, r=0.64, P<0.05; control group, r=-0.41, P<0.05). However the expression of CD40, TGF-β, CD40L, IL-8, IL-17A, IL-22, IL-10, IL-1β, IFN-γ and IL-4 significantly did not relate with platelet counts in both ITP and control group.</p><p><b>CONCLUSIONS</b>The secretory imbalance between pro-inflammatory and anti-inflammatory cytokines exists in the patients of ITP. The decrease of Plt regulated may be regulated by the abnormal expression of TNF-α.</p>


Subject(s)
Humans , Cytokines , Purpura, Thrombocytopenic, Idiopathic
12.
Journal of Xinxiang Medical College ; (12): 216-218,223, 2018.
Article in Chinese | WPRIM | ID: wpr-699506

ABSTRACT

Objective To explore the effect of epidural labor analgesia on the prolactin (PRL) levels of parturient.Methods Sixty primipara who delivered in the First Affiliated Hospital of Xinxiang Medical University from October 2016 to May 2017 were selected as research object.The parturient were divided into observation group and control group,with 30 cases in each group.The parturient in observation group were given ropivacaine combined with sufentanil for epidural block labor analgesia;the parturient in control group took natural production method without any analgesia method.The pain score,duration of labor,milk yield,serum PRL level before analgesia and 24,48 h postpartum and the number of initial lactation at 30 rmin,24 h,48 h postpartum of maternal were compared between the two groups.Results The active period of the first stage of labor of parturient in the observation group was significantly shorter than that in the control group (P < 0.05);there was no statistic difference in the latent period of the first stage of labor,the second stage of labor and the third stage of labor of parturient between the observation group and the control group(P < 0.05).There was no statistic difference in the pain score of parturient between the two groups before analgesia(P < 0.05);the pain score of parturient in observation group was significantly lower than that in the control group at the time point of uterine orifice open 3 cm,uterine orifice full dilatation and fetal disengagement(P< 0.05).There was no statistic difference in the PRL levels of parturient between the two groups before analgesia (P < 0.05);the PRL level of parturient in observation group was significantly higher than that in the control group at 24,48 h postpartum(P <0.05).The condition of initial lactation of maternal in the observation group was significantly better than that in the control group(P < 0.05).The milk yield of parturient in observation group was significantly more than that in the control group at 24,48 h postpartum (P < 0.05).Conclusion Epidural analgesia can reduce the pain of parturient,shorten the active stage of the first stage of labor,increase the level of PRL and increase the milk yield of the postpartum.

13.
Chinese Journal of Epidemiology ; (12): 110-112, 2005.
Article in Chinese | WPRIM | ID: wpr-232125

ABSTRACT

<p><b>OBJECTIVE</b>To evaluate the long-time effect on allitridum and selenium in preventing cancer of digestive system.</p><p><b>METHODS</b>Persons who were recruited into the intervention group and took allitridum and selenium to prevent gastric cancer in Qixia county of China from 1989-1991 were followed up to 2001 and data of deaths was collected. The long effect on allitridum and selenium in preventing cancer of digestive system was analysed.</p><p><b>RESULTS</b>Data were compared to placebo group five years (1992-1996) after the termination of intervention to have found that the accumulative mortality rate of all cancer, digestive system cancer and gastric cancer had decreased 45.5%, 41.2% and 63.3% in the intervention group respectively. By stratum analysis, accumulative mortality rate of all cancer, digestive system cancer and gastric cancer had decreased 51.5%, 51.5% and 67.7% in males of the intervention group, respectively. Relative risks for males in the intervention group were 0.48, 0.47 and 0.30 times more than the placebo group, respectively. All of them were statistically significant. Relative risks for females in the intervention group were 0.74, 0.92 and 0.70 times more than placebo group. Six to ten years later after the termination of intervention, the accumulative mortality rate and relative risk of all cancers in two groups became similar.</p><p><b>CONCLUSION</b>Allitridum and selenium had the effect of decreasing the incidence risk of digestive cancer with a protective rate more than 50% for five years after the termination of intervention program.</p>


Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , Allyl Compounds , Therapeutic Uses , Antioxidants , Therapeutic Uses , Follow-Up Studies , Gastrointestinal Neoplasms , Selenium , Therapeutic Uses , Stomach Neoplasms , Sulfides , Therapeutic Uses
14.
Chinese Medical Journal ; (24): 1155-1160, 2004.
Article in English | WPRIM | ID: wpr-291961

ABSTRACT

<p><b>BACKGROUND</b>People have more and more concerned about allitridum as studies have shown that taking more raw garlic associated with a lower risk for cancers of the alimentary system. In the present study, we tried to examine whether a large dose of allitridum and a microdose of selenium prevent gastric cancer.</p><p><b>METHODS</b>A double-blind intervention study was performed on the participants aged (35 - 74) years, who had matched at least one of the following criteria: (1) a medical history of stomach disorder, (2) a family history of tumour, or (3) smoking and/or alcohol consumption. A total of 2,526 and 2,507 persons were randomly enrolled into intervention group and control group respectively from 288 natural villages of seven communities in Qixia County, Shandong Province, China. Each person of the intervention group orally took 200 mg synthetic allitridum every day and 100 microg selenium every other day for one month of each year during November 1989 to December 1991. At the same time, people in control group were given 2 placebo capsules containing corn oid with the identical appearance to that in the intervention group.</p><p><b>RESULTS</b>For all subjects the large dose of allitridum was accepted and no harmful side effects were found during the study. In the first follow-up five years (1992 - 1997) after stopping the intervention, the morbidity rates of malignant tumours in the intervention group declined by 22%, in contrast to the control group, declined by 47.3%. After adjusting for age, gender, and other potential confounders, relative risks (RRs) for all tumours and gastric cancer of the whole population were 0.67 (95% CL: 0.43 - 1.03) and 0.48 (95% CL: 0.21 - 1.06), respectively, and for male group they were 0.51 (95% CL: 0.30 - 0.85) and 0.36 (95% CL: 0.14 - 0.92), respectively. No signigicantly protective effect was found for the female subgroup.</p><p><b>CONCLUSION</b>The present study proves that large doses of allitridum and microdorse of selenium may effectively prevent gastric cancer, especially in men.</p>


Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , Allyl Compounds , Double-Blind Method , Multivariate Analysis , Selenium , Stomach Neoplasms , Sulfides
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