Establishment and Evaluation of A High-Speed Fragment-Induced Penetrating Liver Injury Model Assisted by Portable Ultrasound / 中国医学影像学杂志

Purpose To establish and evaluate a high-speed fragment-induced penetrating liver injury model in pigs assisted by portable ultrasound.Materials and Methods With the aid of portable ultrasound,the lower edge of the liver at the end of expiration and the lower edge of the right chest at the end of inspiration of 10 Landrace pigs were positioned on the body surface.Then the sighting line was traced to determine the direction of projection and the sighting point.High-speed(about 627 m/s)fragments were projected through an experimental ballistic gun to induce penetrating liver injury.Blood pressure,heart rate,respiratory rate,pulse oxygen saturation and other physiological indexes were measured 15 minutes before shooting and 20 minutes after shooting.20 minutes after injury,the liver injury and the degree of injury were examined by ultrasound.After injury,the liver injury and abdominal fluid accumulation were observed by on-site portable ultrasound,and the size of liver trauma,liver injury grade,abdominal fluid accumulation location and maximum depth were recorded.The degree of liver injury was evaluated by comparison with the gross pathological results.Results Nine out of ten pigs were successfully modeled.The success rate of penetrating liver injury induced by fragments was 90%(9/10),other organ injury in abdominal cavity was 22.22%(2/9),and diaphragm penetrating injury was 22.22%(2/9),which did not occur obvious hemopneumothorax.After injury,the systolic blood pressure,diastolic blood pressure,and pulse oxygen saturation of the pigs decreased[(132.44±12.65)mmHg vs.(103.33±33.43)mmHg,(96.44±12.27)mmHg vs.(70.89±24.21)mmHg,(89.44±8.49)%vs.(76.00±13.41)%;t=2.440,2.651,4.084,all P<0.05],and the heart rate increased[(94.00±17.39)times/min vs.(139.89±37.21)times/min;t=3.534,P<0.05].Within 20 minutes after modeling,portable ultrasound images showed that the liver injury was a patchy,heterogeneous,slightly strong echo area with clear and irregular boundary,and the continuity of the local liver capsule was interrupted.The ascites appeared in the abdominal cavity with the maximum depth of(4.16±1.35)cm.The American association for the surgery of trauma(AAST)liver injury grading of gross pathology after the animals were killed showed that there were 6 cases of grade Ⅱ and 3 cases of grade Ⅲ.Along the fragment projection direction,the short diameter measured by ultrasound was positively correlated with the depth of gross pathological laceration(r=0.945,P<0.001).Compared with the gross specimen,the accuracy rate of ultrasonic AAST grading of liver injury was 88.89%(8/9).Conclusion The model of high-speed fragment-induced liver injury in pigs assisted by portable ultrasound is accurate and stable,and portable ultrasound can effectively evaluate the penetrating liver injury,which provides a basis for the treatment of liver firearm injury.

The effect of esketamine on postoperative analgesia and postpartum depression after cesarean section / 中国医师杂志

Objective:To observe the effect of combination of esketamine and sufentanil on postoperative analgesia and postpartum depression after cesarean section.Methods:A total of 150 primiparous women who underwent lower segment cesarean section under spinal anesthesia and postoperative analgesia at Changsha Maternal and Child Health Hospital from February to October 2021 were selected and randomly divided into three groups: A, B, and C, with 50 cases in each group. All three groups underwent combined spinal epidural anesthesia and received patient-controlled intravenous analgesia (PCIA) after surgery. The group A received low-dose esketamine via intravenous pump after fetal delivery, with PCIA formula esketamine combined with sufentanil; After the delivery of fetuses in the group B and the group C, an equal dose of physiological saline was pumped into the vein. The PCIA formula of esketamine combined with sufentanil for the group B and Sufentanil for the group C. We compared the pain Visual Analogue Scale (VAS) and Edinburgh Postpartum Depression Scale (EPDS) scores of three groups of patients at different time points after surgery, as well as the postoperative pain relief rate and incidence of adverse reactions.Resultsl:There was a statistically significant difference in VAS between the group A and the group B within 48 hours after surgery compared to the group C (all P<0.05), while there was a statistically significant difference in VAS between the group A and the group B within 24 hours after surgery (all P<0.05). The postoperative pain relief rate in the group A and group B was significantly lower than that in the group C, and the incidence of postpartum depression within 7 days after surgery was significantly lower than that in the group C. Moreover, the incidence of postpartum depression in the group A was lower than that in the group B within 3 days after surgery, and the differences were statistically significant (all P<0.05). There was no statistically significant difference in the incidence of postpartum depression among the three groups 42 days after surgery (all P>0.05), and there was no statistically significant difference in the incidence of adverse reactions among the three groups ( P>0.05). Conclusions:Esketamine combined with sufentanil can synergistically enhance the analgesic effect after cesarean section and reduce the incidence of early postpartum depression after surgery.

Application of ultrasound-guided lumbar quadratus muscle block in multimodal analgesia after cervical cancer radical surgery / 中国医师杂志

Objective:To evaluate the application of ultrasound-guided lumbar quadratus muscle block in multimodal analgesia after cervical cancer radical surgery.Methods:A total of 120 patients who underwent elective open surgery for cervical cancer at Changsha Maternal and Child Health Hospital from January 2021 to January 2023 were selected and randomly divided into three groups: quadratus lumborum block (QLB) group, rectus sheath block (RSB) group, and patient-controlled intravenous analgesia (PCIA) group, with 40 patients in each group. After surgery, they underwent lumbar quadratus muscle block+ intravenous analgesia, rectus abdominis sheath nerve block+ intravenous analgesia, and simple intravenous analgesia. Three groups of patients were observed for their resting and active pain Visual Analogue Scale (VAS) at 2, 6, 12, 24, and 48 hours after surgery, as well as their postoperative pain relief rate, nausea and vomiting rate, skin itching incidence rate, first postoperative exhaust time, first ambulatory activity time, hospitalization time, and patient satisfaction.Resultsl:The resting and active VAS scores of the QLB group and RSB group were significantly lower than those of the PCIA group at 2, 6, 12, 24, and 48 hours after surgery, and the scores of the QLB group were lower than those of the RSB group at all time points, with statistical significance (all P<0.05). The postoperative pain relief rate and incidence of nausea and vomiting in the QLB group were significantly lower than those in the PCIA group (all P<0.05). The first postoperative exhaust time and first ambulation time of the QLB group were significantly earlier than those of the PCIA group and the RSB group, and the hospitalization time was significantly shorter than that of the PCIA group and the RSB group, with statistical significance (all P<0.05); The first postoperative exhaust time and first bedtime activity time in the RSB group were significantly earlier than those in the PCIA group (all P<0.05). The postoperative patient satisfaction scores of the QLB and RSB groups were higher than those of the PCIA group (all P<0.05), and there was no statistically significant difference in patient satisfaction scores between the QLB and RSB groups ( P>0.05). Conclusions:Ultrasound guided lumbar quadratus muscle block combined with low opioid intravenous analgesia can significantly reduce postoperative pain scores, shorten hospitalization time, and improve patient satisfaction. It is an important component of multimodal analgesia after cervical cancer radical surgery and can promote early recovery of patients.

Effect of esmketamine for labor analgesia on development of postpartum depression / 中华麻醉学杂志

Objective:To evaluate the effect of esmketamine for labor analgesia on the occurrence of postpartum depression (PPD).Methods:Two hundred and forty-two cases of nulliparous parturients who selected natural labor and agreed to receive labor analgesia were selected and divided into conventional labor analgesia group (C-LA group, n=119) and esmketamine-based labor analgesia group (E-LA group, n=123). The epidural labor analgesia solution contained ropivacaine 100 mg and sufentanil 30 μg in 100 ml of normal saline in C-LA group. The epidural labor analgesia solution contained ropivacaine 100 mg, sufentanil 30 μg and esketamine 50 mg in 100 ml of normal saline in E-LA group. The Edinburgh Postnatal Depression Scale (EPDS) was used to screen parturients for depression on admission to the predelivery room and at 2 h and 1, 7 and 42 days after delivery, and EPDS scores were recorded. The patients were diagnosed as having PPD when EPDS score ≥ 9 at 7-42 days after delivery. Peripheral venous blood samples were collected on admission to the predelivery room and at 1 day after delivery to determine the concentrations of serum estrogen, progesterone, 5-hydroxytryptamine and cortisol by enzyme linked inmunosorbent assay. Results:Compared with group C-LA, the EPDS scores were significantly decreased on the 1 and 42 days after delivery( P<0.01), no significant change was found in the incidence of PPD (1.7%/0.8%, P>0.05), no significant change was found in the concentrations of serum estrogen, progesterone, 5-hydroxytryptamine and cortisol on admission to the delivery room ( P>0.05), and the concentrations of serum progesterone and cortisol were significantly increased on 1 day after delivery in group E-LA ( P<0.05). Conclusions:Combination of esketamine is helpful in reducing the risk of postpartum depression when used for epidural labor analgesia, and the mechanism is related to slowing the declines in blood levels of sex hormones and stress hormones after delivery.

Establishment of a high-velocity fragment-induced penetrating liver injury model in landrace pigs / 中华危重病急救医学

Objective:To establish a stable fragment-induced penetrating liver injury model in landrace pigs and evaluate the characteristics of deep tissue injury.Methods:According to the different positioning methods of aiming points, twelve healthy adult landrace pigs were divided into group A (the relative height "h" of the aiming point and the highest point of the body surface on the tracing line was set to 5 cm) and group B ("h" was set to 6 cm). Ultrasonography was used to determine the direction of fragment projection, and an experimental ballistic gun was used to project high-velocity fragments to cause injury to animals. The vital signs of the two groups were monitored, and whole blood cell count, blood gas analysis, and liver and renal function were tested. Damages to the liver and adjacent organs, as well as the amount of bleeding and survival time were analyzed.Results:For the overall analysis of the two groups, the liver hit rate of fragment simulating projectiles was 100% (right anterior lobe and right lateral lobe injury), the hit rate of other organs in the abdominal cavity was 25% (3/12), and the incidence of hemothorax or pneumothorax was 8% (1/12). The wounds were mainly characterized by liver lacerations, with total or partial disconnection of the distal liver lobe. There was no significant difference in wound length and bleeding amount between groups A and B [wound length (cm): 9.8±1.7 vs. 11.2±3.8, bleeding amount (g): 597.0±477.1 vs. 1 032.0±390.3, both P > 0.05]. The depth of liver parenchymal laceration in group B with the aiming point closer to the anterior median line was significantly longer than that in group A (cm: 2.8±0.4 vs. 1.9±0.6, P = 0.015). Mean arterial pressure (MAP), pH value, residual arterial blood base (BE), hemoglobin (Hb) and hematocrit (HCT) levels decreased after the fragment-induced injury, and then reached a trough level [MAP (mmHg, 1 mmHg ≈ 0.133 kPa): 87.0±33.6, pH: 7.26±0.15, BE (mmol/L): -6.65±8.48, Hb (g/L): 9.86±1.10, HCT: 0.309±0.029, all P < 0.05] in the first hour. Blood lactate (Lac), lactate dehydrogenase (LDH) and aspartate aminotransferase (AST) levels increased over time, and reached a peak level [Lac (mmol/L): 10.21±4.40, LDH (U/L): 1 417.0±223.3, AST (U/L): 234.5 (162.5, 357.5), both P < 0.05] at 1 hour after injury. Pearson's correlation analysis showed that the total amount of bleeding was correlated with the depth of liver parenchyma laceration ( r = 0.684, P = 0.014). The Kaplan-Meier survival curve showed that the 3 hours survival rate in group A was higher than that in group B, but the difference was not statistically significant [83.3% (5/6) vs. 33.3% (2/6), P > 0.05]. Conclusions:The high-velocity fragment-induced penetrating liver injury model established by striking landrace pigs closer to the anterior median line with fragment simulating projectiles is reproducible and the degree of damage is controllable, and the model is applicable to further relevant research of hepatic ballistic trauma.

Perioperative rehabilitation of children undergoing lingual frenoplasty under dexmedetomidine nasal drip combined with esketamine anesthesia / 中国医师杂志

Objective:To observe the perioperative rehabilitation of children undergoing lingual frenoplasty under dexmedetomidine nasal drip combined with esketamine anesthesia.Methods:100 children who underwent lingual frenoplasty in Changsha Maternal and Child Health Hospital from 2020 to 2021 were randomly divided into two groups: the esketamine group (E group, 50 cases) and the dexmedetomidine nasal drip combined with esketamine group (DE group, 50 cases). The mean arterial pressure (MAP), heart rate (HR) , blood oxygen saturation (SpO 2) and respiratory rate (RR) were measured, and the patients were admitted to the post anesthesia recovery unit (PACU) after operation. The modified Aldrete score, Visual Analogue Score (VAS), Wake-up Restlessness Score, food intake (clear water) time and hospital leaving time were observed at 10 min, 30 min, 60 min and 120 min after operation. Results:There was no significant difference in SpO 2 and RR, MAP and HR at T 0 and T 6 between the two groups (all P>0.05). The MAP and HR at T 1, T 2, T 3, T 4 and T 5 in DE group were lower than those in E group (all P<0.05). The modified Aldrete score of DE group was higher than that of E group, and the VAS and Wake-up Restlessness Score were lower than that of E group (all P<0.05); The time of food intake (clear water) and leaving hospital were shorter than those in Group E, with statistically significant difference (all P<0.05). Conclusions:In children′s lingual frenoplasty, dexmedetomidine nasal drip combined with esmketamine can more effectively relieve postoperative pain and agitation than esmketamine alone, shorten children′s postoperative eating time, leave the hospital earlier, and enhance recovery of children.

Effect of transverse abdominis plane block combined with dexmedetomidine on recovery quality after cesarean section under general anesthesia in post anesthesia recovery unit / 中国医师杂志

Objective:To study the effects of transverse abdominis plane block (TAPB) combined with dexmedetomidine on the recovery quality after general anesthesia in cesarean section.Methods:From June 2019 to October 2020, 120 cases of cesarean section in Changsha Maternal and Child Health Hospital were randomly divided into dexmedetomidine group (Group D), transversus abdominis plane block group (group T), transversus abdominis plane block combined with dexmedetomidine (Group TD) and control group (Group C). Before anesthesia induction, local infiltration of 1% lidocaine was performed at the incision of all parturients. Propofol and rocuronium were used for induction under general anesthesia. After delivery of fetus, sufentanil and midazolam were injected intravenously, and propofol was pumped to maintain anesthesia. At the same time, dexmedetomidine was pumped into group D and TD, and normal saline was pumped into group T and C. After the posterior sheath of rectus abdominis was sutured in T group and TD group, two epidural anesthesia catheters were placed to the fascia of transverse abdominis on both sides, and 10 ml of 0.33% ropivacaine was injected respectively. The parturients were sent to postanesthesia care unit (PACU) after the operation. The time from the end of operation to the extubation of tracheal tube, heart rate (HR) and mean arterial pressure (MAP) before operation (T 1), after induction (T 2), after operation (T 3), at the time of extubation (T 4), 10 minutes after extubation (T 5) and at the time of leaving PACU (T 6) were recorded. Steward's wake-up score at T 4, T 5 and T 6, agitation during extubation (Sedation Agitation Scale, SAS score), PACU stay time and pain visual analogue scale (VAS) were recorded. Results:There was no difference in HR and MAP between the four groups at T 1, T 2, and T 3 ( P>0.05), while HR and MAP in group C at T 4, T 5 and T 6 were higher than those in the other three groups ( P<0.05). There was no significant difference in Steward′s wake-up score among the four groups ( P>0.05). The SAS score [(4.0±0.4)point], the time from the end of operation to extubation [(10.1±1.5)min] and stay time of PACU [(21±4.2)min] were the lowest in group TD than those in the other three groups ( P<0.05); the VAS score in group TD [(0.5±0.5)point] and group T [(1.1±0.4)point] were lower than that in group D [(4.1±0.3)point] and group C [(5.3±0.5)point] ( P<0.05). Conclusions:The application of general anesthesia combined with TAPB and dexmedetomidine in cesarean section may improve the quality of anesthesia recovery.

Endoscopic and pathological features of advanced colorectal serrated adenoma / 中华消化内镜杂志

Objective To analyze the clinical and pathological features of advanced colorectal serrated adenoma(ACSA). Methods The endoscopic and pathological features of 156 cases of ACSA and 121 cases of non-ACSA diagnosed in General Hospital, Tianjin Medical University from January 2010 to March 2016 were retrospectively analyzed and compared.Results ACSA and non-ACSA cases accounted for 56.3%(156/277)and 43.7%(121/277)of all patients with colorectal serrated lesions,respectively. The mean age of ACSA patients was 57.79±13.65 years and 89(57.1%)of these patients were male. There was no significant difference in age and gender between ACSA and non-ACSA patients. A total of 161 ACSA lesions were diagnosed,including 71 sessile serrated adenoma/polyps and 90 traditional serrated adenomas. Among the 161 ACSA lesions,there were 29(18.0%)lesions whose diameter≥10 mm, and 84(52.2%) lesions located in the proximal colon, which were more than non-ACSA(84/161 VS 49/134,P=0.007). ACSA was classified under endoscopy into pedunculated type(20/161),sub-pedunculated type(35/161), sessile type(24/161),flat type(79/161)and laterally spreading tumor(3/161), and the distribution of lesion type was significantly different from non-ACSA(P<0.001). One hundred and sixty(99.4%)ACSA lesions were diagnosed as dysplasia, including 158 low degree dysplasia and 2 high degree dysplasia.Moreover,16 ACSA patients were accompanied with synchronous advanced colorectal neoplasia(sACN), and large serrated polyps(diameter≥10 mm)might have a strong association with sACN(OR=4.35, 95%CI:1.467-12.894, P<0.05). Conclusion ACSA is more common in proximal colon and sub-pedunculated type,sessile type and flat type. ACSA diameter≥10 mm is significantly associated with sACN.

A clinical comparative study of Keyhole with re-ostomy and without re-ostomy in the treatment of laparoscopic parastomal hernia repair for stoma hernia / 中华普通外科杂志

Objective To compare laparoscopic Keyhole parastomal hernia repair with re-ostomy technique or without re-ostomy in the treatment of stoma hernia,then analyze the advantages of reconstruction ostomy,and summarize the key technical points of the reconstruction operation.Methods From Jan 2010 to Dec 2016,68 stoma hernia patients underwent laparoscopic Keyhole parastomal hernia repair with reostomy technique,52 patients underwent laparoscopic Keyhole parastomal hernia repair without re-ostomy technique.The preoperative,intraoperative and postoperative parameters were analyzed.Results Compared to without re-ostomy group,the re-ostomy reconstruction group had low incidence rate of intestinal fistula (x2 =5.411,P =0.033),patch infection (x2 =6.823,P =0.014),the incidence of postoperative serous swelling and serum swelling (x2 =14.266,P ＜0.001),postoperative recurrence (x2 =8.688,P =0.005) and postoperative appearance dissatisfaction (x2 =9.479,P =0.004).Conclusion Laparoscopic parastomal hernia repair and re-ostomy technique reduces the incidence rate of intestinal fistula,patch infection and serous swelling and serum swelling,decreases the postoperative recurrence rate and appearance dissatisfaction.

Advances in Research on Dendritic Cell-based Tumor Vaccine / 胃肠病学

Although tumor immunotherapy has been proposed for many years,the consensus denoting it as an essential approach for fighting against cancer is reached only in recent years. Tumor immunotherapy can be categorized as active and passive ones. In order to successfully cure cancer,safe and efficient active immunotherapy is required. Dendritic cells (DCs)are not only the bridge linking innate and adaptive immunity,but also the key determinants of the quality of adaptive immunity:immunity versus immune tolerance. Therefore,the safe and efficient DC-based tumor-specific and broad-spectral tumor vaccine has an irreplaceable important position in tumor immunotherapy. Because of the high heterogeneity of DCs, the research on DC-based tumor vaccine has encountered a bottleneck. Here,we reviewed the progress in research on DC-based tumor vaccine and related problems needed to be resolved with the incorporation of our experiences.

Efficacy of ketamine in preventing postpartum depression in patients undergoing cesarean section / 中华麻醉学杂志

Objective To evaluate the efficacy of ketamine in preventing postpartum depression in patients undergoing cesarean section.Methods One hundred and twenty ASA physical status Ⅰ patieuts,aged 18-38 yr,with body mass index ＜35 kg/m2,scheduled for elective cesarean section,were equally and randomly divided into 2 groups using a random number table:control group (group C) and ketamine group (group K).Postoperative analgesia was performed with sufentanil 100 μg in 100 ml of normal saline,and sufentanil was infused at 2 ml/h (bolus dose 5 μg,lockout interval 15 min) in both groups.In group K,ketamine 4 mg/kg was added to analgesic pump.VAS score was maintained＜3.Before surgery and at 1,3,5 and 42 days after surgery,depressive symptoms were measured using the Edinburgh Postpartum Depression Survey (EPDS),and postpartum depression was defined as EPDS score ≥ 13.Postpartum depression and ketamine-related complications occurred within 3 days after surgery in group K were recorded.Results Compared with group C,EPDS scores were significantly decreased at 1,3 and 5 days after surgery,and the incidence of postpartum depression was decreased in group K.Ketamine-related complications were not found in group K.Conclusion Ketamine (infused starting from the end of operation,lasting for 48 h,total amount 4 mg/kg) for postoperative analgesia can prevent postpartum depression to some extent in patients undergoing cesarean section.

The study on damage of mifepristone in fetal liver,kideny and brian / 中国基层医药

Objective To explore the mechanisms on the damage in fetus liver,kidney and brain with administration of mifepristone and mesoproseol.Methods 17 specimens were obtained from the women who volunteered to terminate their pregnancy during 10～28 weeks.According to the fetus weight,they were divided into 3 groups.Immunohistochemistery was induced to investigate the expressions of pur-?,HSP70.Results The expressions of pur-? and HSP70 could be observed in both the treatment group and the control group.pur-? and HSP70 are the targets in detecting the damage of DNA.But pur-? was more sensitive than HSP70.The damage on group Ⅱ is the strongest.Conclusion Mifepristone can lead to the damage to lover,kidney and brain in mid-pregnancy.Its damage will be reducing as the growing of fetus.

PPAR? agonist pioglitazone attenuates cortical neuron lesion and gliosis in rat brain of post-traumatic injury / 中国病理生理杂志

AIM:To investigate the neuroprotective effect of pioglitazone (Pio),a potent agonist of peroxi-some proliferator-activated receptor gamma (PPAR?),on the traumatic brain injury (TBI) in rats. METHODS:SD rats were randomly divided into 4 groups:sham group,vehicle + TBI group,Pio + TBI group and Pio + T0070907 + TBI group. TBI was induced by the method of controlled cortical impact (CCI) injury. Neutral red staining technique was used to determine the cortical lesion volume. NeuN,GFAP and OX -42 were measured by immunohistochemical technique to evaluate the morphology of neurons,activation and infiltration of astrocytes and microglia at the edge of cortical lesion. RE-SULTS:CCI injury in rat elicited activation and proliferation of the astrocytes and microglia. The glial scar wall formation at the edge of cortical lesion,which was accompanied by the loss of neurons,was observed. Pio significantly reduced the cortical lesion volume,the activation and infiltration of the astrocytes and microglia,and the loss of pyramidal neurons at the edge of cortical lesion. T0070907,an antagonist of PPAR?,reversed the effects of Pio. CONCLUSION:Pioglitazone exerts a neuroprotective efficacy,attenuates the loss of neurons and cortical lesion volume following CCI injury by inhibiting the activation and infiltration of astrocytes and microglia,especially glial scar formation.

Autoimmune syndrome induced by chronic mucosal immune response / 中国免疫学杂志

To explore me chanisms of successful induction of autoimmunity by chronic Campylobacter jejuni (CJ-S131 ) infection [3, 4, 5, 6], a chronic mucosal immune response mooe(?) was established by oral immunization of BALB /C mice with formalized CJ-S131 bacteria.in a dosage of 4 xlO8 bacterial cells per mouse, twice a week for 14 weeks, which mimicked the released antigens persistently stimulating the mucosal immune system when mice were chronically infected by C. jejuni. It was also found that the immunized mice demonstrated (?)upus-like autoimmune syndro me, sim ilar, but more severe.to those seen in the mice chronically infected by C. jejuni. It was characterized by (1) significant lymphoproliferation of both mucosal and systemic immune systems; (2) polyclonal activation of B lymphocytes; (3) significantly elevated level of multiple autoanti bodies against ss- DNA, ds- DNA and histones; (4) immunocom plex glomerulonephritisi; (5) chronic inflammation of multiple organs or tissues including the intestine, liver and blood vessels. In the polyclonal activation testin vitro, the levels of total immunoglobulins and autoantibody against DNA in the supernatan ts of the splenic culture cells from the immunized mice were significantly higher than that from the controll mice. The results verified that chronic C. jejuni infection in the gut could induce abnormal. chronic mucosal immune response which led to perturbation of the systemic immune system, resulting autoimmunity or autoimmune syndrom.

Kinetics of autoantibody induced by oral immunization with formalized campylobacter jejuni in mice / 中国免疫学杂志

KM mice were orally immunized with formalized C. jejuni (CJ-S131 vaccine) for 16 weeks. The production kinetics of autoanti bodies against ss-DNA, ds-DNA, histories and extractable nuclear antigens (ENA) was investigated and two peaks of autoantibody production were observed within 16 weeks after immunizalion. The first peak appeared at 6th week after immunization when the positive percentage of autoantibody against histones (83%) and ENA (67%) was higher than that against ds-DNA (33%) and ss-DNA ( 0 %), and the second peak at 16th week when the positive percentage of anti-ds-DNA (50%) and anti-ss-DNA (83%) antibody higher than that of anti-histones (33%) and anti-ENA (33%) anti body. Natural autoanti bodies against nuclear acid (ds-DNA and ss-DNA) in the controlled mice could be detected, too, by ELISA, which raised with aging but obviously demonstrating individual difference; however, autoanti bodies to nucleoproteins (histones and ENA) could not be detected at the matched times. The results suggested that autoantibody against histones or ENA was more specific for autoimmune diseases than that against DNA, and might be of significance for earlier diagnosis of the systemic autoimmune diseases, e. g. SLE, in clinic.

Influences of both genetic background and sex on the production of autoantibodies induced by vaccine of campylobacter jejuni / 中国免疫学杂志

Five strains of mice (C57BL/6, BALB/c, ICR, KM and SMMC/B) were respectively orally immunized with CJ-S131 vaccine for 16 weeks, Autoantibodies against ss-DNA, ds-DNA, histones, extractable nuclear antigens (ENA)and thymocytes were detected by ELISA or CELIS(?)One or more kind (s) of autoantibody significantly raised in the serum of SMMC/B, KM, BALB/c and ICR mice, but not in C57BL/6 mice. The mean enzyme index (EI) of the autoantibodies of SMMC/B and KM mice was higher than that of ICR and BALB/c. The influence of the sex on the production of autoantibody induced by CJ-S131 vaccine seemed to be demonstrated on the basis of genetic background.It was characterized by (1) autoantibodies raising mainly in the female mice,e.g. in KM mice; (2) one kind of autoantibody or more raising in both male and female mice, as seen in SMMC/B and BALB/c mice; and (3) autoantibody no in male and female of C57BL/6 mice. The results revealed that the profile of autoimmune response induced by CJ-S131 vaccine was different in strains and sex of mice.