Objective To investigate the effects of interlukin-10 (IL-10) on lipopolysaccharide (LPS)-induced liver injury in rats.Methods One hundred male Wistar rats,aged 10-14 weeks,weighing 250-300 g,were randomly divided into 5 groups (n =20 each):control group (C group),LPS group,IL-10 group,HO-1 inducer cobalt protoporphyrin-Ⅸ group (Co group) and HO-1 inhibitor zinc protoporphyrin-Ⅸ group (Zn group).The animals in LPS,IL-10,Co and Zn groups received intraperitoneal LPS 20 mg/kg.IL-10,Co and Zn groups received recombinant human IL-10 1 μg at 3 h before LPS injection.Co and Zn groups received cobalt protoporphyrin-Ⅸ and zinc protoporphyrin-Ⅸ 25 mg/kg at 2 h before administration of recombinant human IL-10.Ten rats in each group were chosen at 24 h after LPS injection and blood samples were collected from the heart for determination of the levels of serum alanine aminotransferase (ALT),aspartate transaminase (AST),tumor necrosis factor-α (TNF-α) and interlukin-1β (IL-1 β).The animals were then sacrificed and lungs removed for determination of glutathione peroxidase (GSH-Px) and superoxide dismutase (SOD) activities,malonodialdehyde (MDA) content and expression of HO-1 mRNA in lung tissues.The left 10 rats in each group were chosen and the survival rates within 72 h after LPS administration were recorded.Results Compared with C group,the levels of serum ALT,AST,TNF-αand IL-1 β and MDA content in lung tissues were significantly increased,and GSH-Px and SOD activities in lung tissues and survival rates were decreased in LPS,IL-10,Co and Zn groups (P ＜ 0.05).Compared with LPS group,the levels of serum ALT,AST,TNF-α,IL-1β and MDA content in lung tissues were significantly decreased,GSH-Px and SOD activities in lung tissues and survival rates were increased,and the expression of HO-1 mRNA was up-regulated (P ＜ 0.05).Compared with IL-10 group,the levels of serum ALT,AST,TNF-α and IL-1β and MDA content in lung tissues were significantly increased,and GSH-Px and SOD activities in lung tissues and survival rates were decreased in group Zn (P ＜ 0.05),and no significant change in the parameters mentioned above was found in Co group (P ＞ 0.05).Conclusion IL-10 can attenuate LPS-induced liver injury in rats by inducing the expression of HO-1.

Objective To investigate the mechanism of small-dose cisplatin in enhancing photodynamic therapy sensitivity and apoptosis in human cervical carcinoma cell lines.Methods The Hela and Siha cells were divided into four groups(blank control group,photodynamic therapy only,cisplatin only,photodynamic therapy and cisplatin).The effects on proliferation of Hela and Siha cells in the four groups were examined by MTT assay.The expression of P185c-erbB-2 in Hela and Siha cells affected was detected by immunocytochemistry.Results The degree of apoptosis caused by the joint application of cisplatin and photodynamic therapy was greater than that caused by cisplatin or photodynamic therapy alone.The expression of P185c-erbB-2 in cells declined correspondingly.However,the order of cisplatin and photodynamic therapy did not cause obvious differences in the effect.Conclusion The in vitro proliferation of Hela and Siha cells is restrained obviously by cisplatin combined with photodynamic therapy;the effect is greater than that of cisplatin or photodynamic therapy only.The mechanism of cispatin's enhancement of photodynamic therapy sensitivity may be related to inhibiting P185c-erbB-2 expression.

Objective To investigate the effect of total saponins of panax notoginseng(PNS)on the production of collagen Ⅰ,Ⅲ and TGF-?1 in rats with experimental fibrosis.Methods Experimental fibrosis model was copied by intracutaneous injection of BSA and rats feeding on diet rich in lipid.From the 1st day after BSA injection,SPN(60 or 30 mg/kg)or Colchicine were given intracutaneously once a day for 42 days.All animals were sacrificed on the 43rd day.Their hepatic function was evaluated by determining the levels of ALT,AST,ALB in serum.The progression of hepatic fibrosis was confirmed by pathological analysis.Then type collagenⅠ,Ⅲ and TGF-?1 were observed with immunohistochemical method.Results The BSA injection significantly elevated the levels of ALT and AST,while SPN treatment significantly down-regulated them.But the level of ALB was opposite to that of ALT or AST in SPN treatment group.The positive staining of the collagenⅠ,Ⅲ and TGF-?1 was stronger in hepatic fibrosis model group than in SPN treatment group.The contents of the collagen were identical to the immunohistochemical results.Conclusion SPN has the protective effect against liver fibrosis.

Objective To investigate the inhibitory effect of IFN-γ on acute allergic airway inflammation induced by IL-33 in mice.Methods Twenty-four female C57BL/6 mice (6-8 weeks) were randomly divided into four groups: IL-33 model group, IFN-γ treatment group, IL-33+IFN-γ treatment group and PBS control group.A mouse model of acute allergic airway inflammation was induced by IL-33.Samples of bronchial alveolar lavage fluid (BALF) and lung tissues were collected.Group 2 innate lymphoid cells (ILC2s) and eosinophils were analyzed by flow cytometry.Levels of IL-5 and IL-13 in the supernatants of lung homogenate and BALF were measured by ELISA.Expression of IL-5, IL-13 and ST2 at mRNA level was detected by real-time PCR.Pathological changes in lung tissues were observed following hematoxylin and eosin (HE) and periodic acid-Schiff (PAS) staining.Results Compared with the PBS control group, no infiltration with inflammatory cells, goblet cell hyperplasia or mucus secretion was observed in the IFN-γ group;the numbers of ILC2s and eosinophils were not affected by IFN-γ;the levels of IL-5 and IL-13 in the supernatants of BALF and lung homogenate, and the expression of IL-5, IL-13 and ST2 at mRNA level in lung tissues were not significantly changed by IFN-γ (P>0.05).Compared with the PBS control group, massive infiltration with inflammatory cells, excessive mucus secretion, increased numbers of ILC2s and eosinophils, up-regulated levels of IL-5 and IL-13 in the supernatants of BALF and lung homogenate, and enhanced expression of IL-5, IL-13 and ST2 at mRNA level in lung tissues were detected in the IL-33 model group (P<0.05).Compared with the IL-33 model group, the combined treatment with IL-33 and IFN-γ significantly alleviated inflammatory cell infiltration, inhibited mucus secretion, reduced the numbers of ILC2s and eosinophils, down-regulated the levels of IL-5 and IL-13 in the supernatants of BALF and lung homogenate, and suppressed the expression of IL-5, IL-13 and ST2 at mRNA in lung tissues (P<0.05).Conclusion IFN-γ can inhibit the proliferation of eosinophils and ILC2s induced by IL-33, and reduce the secretion of IL-5 and IL-13, which indicates that IFN-γ has an inhibitory effect on acute allergic airway inflammation induced by IL-33 in mice.

OBJECTIVETo evaluate the effect of intrathecal administration of glycine on the minimum alveolar concentration (MAC) of isoflurane in rats.

METHODSIntrathecal catheters were implanted in 40 adult male rats anesthetized with isoflurane. Baseline MAC of isoflurane was measured during the infusion of artificial cerebrospinal fluid (CSF) alone. Subsequently, 10, 40, 80, 160, and 300 mmol/L of glycine dissolved in artificial CSF were infused for two hours at the same rate as under control conditions, and MAC for isoflurane was re-determined.

RESULTSIntrathecal administration of glycine produced a significant, dose-dependent decrease in MAC for isoflurane (up to -65.2% +/- 16.2%).

CONCLUSIONSIntrathecal administration of glycine decreases anesthetic requirement This result supports the idea that glycine receptors may be important to the immobilizing effect of anesthetics that enhance glycine receptor function such as isoflurane.

Anesthetics, Inhalation ; metabolism ; Animals ; Glycine ; administration & dosage ; pharmacology ; Injections, Spinal ; Isoflurane ; metabolism ; Male ; Pulmonary Alveoli ; drug effects ; metabolism ; Rats ; Rats, Sprague-Dawley

OBJECTIVE: To carry out genetic testing and prenatal diagnosis for a family affected with Duchenne muscular dystrophy (DMD). METHODS: Multiplex ligation dependent probe amplification (MLPA) was used to detect potential deletion and duplication of the Dystrophin gene. Haplotype analysis was performed using five short tandem repeat polymorphism loci (3'-STR, 5'-STR, 45-STR, 49-STR, 50-STR of the DMD gene. RESULTS: A same deletional mutation (exons 51-55) of the DMD gene was detected in two brothers but not in their mother. The patients and fetus have inherited different haplotypes of the Dystrophin gene from their mother, suggesting that the fetus was unaffected. CONCLUSION The mother was very likely to harbor germline mosaicism for the Dystrophin gene variant. Genetic testing of peripheral blood samples cannot rule out germline mosaicism in the mother. Prenatal diagnosis should be provided for subsequent pregnancies in this family.
Dystrophin ; genetics ; Exons ; Female ; Gene Deletion ; Germ-Line Mutation ; Humans ; Male ; Mosaicism ; Muscular Dystrophy, Duchenne ; genetics ; Pregnancy ; Prenatal Diagnosis

OBJECTIVE: To carry out genetic diagnosis for a pedigree affected with cutis laxa. METHODS: Genomic DNA was extracted from peripheral blood samples from members of the pedigree and 50 unrelated healthy controls. Potential mutation was screened by next-generation sequencing and verified by Sanger sequencing. RESULTS: A heterozygous c.1985delG mutation was identified in the ELN gene among all patients from this pedigree. The same mutation was not found among unaffected family members and 50 healthy controls. CONCLUSION The genetic etiology for the pedigree has been elucidated, which has enabled genetic counseling and guidance for reproduction.
Cutis Laxa ; genetics ; Elastin ; genetics ; Heterozygote ; High-Throughput Nucleotide Sequencing ; Humans ; Mutation ; Pedigree

Objective:To evaluate the effect of ultrasound-guided adductor canal combined with knee joint posterior capsule space block on the recovery period delirium in elderly patients undergoing total knee arthroplasty (TKA).Methods:A total of 68 elderly patients who underwent unilateral TKA at the Nanjing First Hospital from December 2021 to December 2022 were selected. They were randomly divided into a control group ( n=34) and an observation group ( n=34) using a random number table method. Both groups received general anesthesia, and the observation group received ultrasound-guided myofascial tube combined with knee joint posterior capsule space block before the surgery began. The incidence of delirium within 24 hours after surgery was mainly observed in two groups of patients. The surgical time, recovery time, intraoperative blood loss, infusion volume, total use of propofol and remifentanil were recorded; The resting and motor Visual Analogue Scale (VAS) scores of the patient were recorded at 4, 8, and 24 hours postoperatively. The patient′s serum tumor necrosis factor-α (TNF-α) and melatonin levels were measured on the day before surgery, the evening after surgery, and the first day after surgery. The subjective sleep quality score was recorded on the first day after surgery; The total dosage of sufentanil for patient-controlled intravenous analgesia (PCIA) within 24 hours after surgery, the effective number of compressions (P1) and actual number of compressions (P2) of PCIA, and the number of cases of additional oxycodone analgesia were recorded; The occurrence of respiratory depression, excessive sedation, nausea, and vomiting within 24 hours after surgery was recorded; The occurrence of complications of nerve block in the observation group was recorded. Results:The incidence of delirium during the recovery period in the observation group was lower than that in the control group ( P<0.05). The dosage of propofol and remifentanil in the observation group was lower than that in the control group (all P<0.05), and the awakening time was shorter than that in the control group ( P<0.05). The VAS scores at rest and exercise at 4, 8, and 24 hours after surgery in the observation group were lower than those in the control group (all P<0.05). Compared with the day before surgery, the observation group showed an increase in melatonin levels on the night after surgery ( P<0.05) and an increase in TNF-α levels on the first day after surgery ( P<0.05); The control group had a decrease in melatonin levels on the first day after surgery ( P<0.05), and an increase in TNF-α levels on the night and day after surgery (all P<0.05). The serum melatonin levels in the observation group were higher than those in the control group on the evening and first day after surgery (all P<0.05), and TNF-α levels were lower than those in the control group (all P<0.05). The subjective sleep quality score of the observation group showed that the total dosage of PCIA sufentanil, P1, P2, and the number of cases of additional oxycodone analgesia within 24 hours after surgery were lower than those of the control group (all P<0.05). The incidence of nausea in the control group (13 cases, 38.2%) was higher than that in the observation group (3 cases, 8.8%) ( P<0.05). Conclusions:In elderly patients undergoing unilateral TKA under general anesthesia, preoperative use of ultrasound-guided adductor tube combined with knee joint posterior capsule space block can effectively reduce the occurrence of postoperative delirium.

Objective To explore the role of next-generation sequencing(NGS)technology in the assisted diagnosis of RA-Sopathies.Methods Peripheral blood was extracted from 1 child patient with suspected Noonan syndrome and her parents,and the gene mutations were detected by adopting the aCGH and NGS.The results were verified by Sanger sequencing.Results The NGS results revealed that the heterozygous mutation of c.1406G>A existed in BRAF gene,and the results of Sanger sequencing in this child case was consistent with the NGS results.The Sanger sequencing results in her parents showed the locus was G/G wild type. Conclusion This child case was diagnosed as CFC.NGS plays a good auxiliary role in the differentiation diagnosis of RASopathies.

Objective To investigate the effect of ultrasonograpy (US )-guided bilateral superior laryngeal nerve (SLN)block by different concentrations of lidocaine combined with intrave-nous anesthesia for polypectomy of vocal cord by laryngoscope.Methods Sixty patients,aged 18-65 years, ASA physical status Ⅰ or Ⅱ, scheduled for elective polypectomy of vocal cord by laryngoscope were divided into 3 groups (n=20 each)using a random number table:US-guided bilat-eral SLN block by 2% lidocaine (group A),S-guided bilateral SLN block by 1% lidocaine (group B), and traditional SLN block by 2% lidocaine (group C).HR,MAP,SpO2and plasma concentration of NE were detected at the time of patients entering the operating room (T0),immediately after intuba-tion(T1),suspensing laryngoscopy (T2),5 min after suspensing laryngoscopy (T3),immediately af-ter extubation(T4),5 min after extubation(T5).Extubation time and side effects such as dysphagia and dyspnea in two hours after extubation were recorded as well.Results HR and MAP in the three groups at T1-T5were increased compared to T0(P<0.05).Compared with group C,HR and MAP in groups A and B were decreased at T1-T5(P<0.05).Plasma concentration of NE of groups A and B was more significantly decreased than group C (P<0.05),and extubation time of groups A and B was less than that of group C (P <0.05 ).Conclusion US-guided bilateral SLN block by 1% lidocaine has definite effect and better comfort level,with stable haemodynamics and less extubation time.