GC-MS Analysis of Effect of Different Processing Conditions on Irritation of Magnoliae Officinalis Cortex / 中国实验方剂学杂志

ObjectiveTo investigate the key compounds affecting the irritation and to clarify the effect of heating and the addition of ginger juice as the auxiliary material during the processing on the irritation of Magnoliae Officinalis Cortex（MOC） by comparing the irritation and composition of volatile oil in MOC and its different processed products. MethodVolatile oil in raw products， water-processed products， ginger-dried products， ginger-fried products（the amounts of ginger were 10%， 50%， respectively） of MOC were extracted by steam distillation and subjected to rabbit eye irritation experiment， and the volatile components of each sample were detected by gas chromatography-mass spectrometry（GC-MS）. Principal component analysis（PCA）and orthogonal partial least squares-discriminant analysis（OPLS-DA） were used to analyze the data of each sample by SIMCA 14.1. The relative contents of different processed products were compared two by two with those of and raw products or ginger-fried products， and the markers that might be related to the irritation were sorted out according to the principles of variable importance in the projection（VIP） value >1 and P<0.05， and the factors influencing the differences in irritation were analyzed. ResultCompared with the blank group， the administration groups all had irritation to the eyes of rabbits， and the degree of irritation was in the order of raw products>water-processed products>ginger-dried products>ginger-fried products（10%）>ginger-fried products（50%）. The results of PCA and OPLS-DA showed that there were differences in the volatile oil from raw products and different processed products. According to VIP value>1 and P<0.05， and combined with the results of eye irritation experiment， ten volatile compounds related to irritation changes were screened out. Among them， cis-cinnamaldehyde was only detected in raw products， the relative contents of β-caryophyllene， （+）-delta-cadinene， α-humulene， γ-muurolene， （-）-isoledene and citral all increased to different degrees， the contents of p-cymene， 1（10）-4-cadinadien-15-ol and β-eudesmol all decreased to different degrees. ConclusionThe irritation of MOC is reduced after heating and processing with ginger juice， and the synergistic effect of both is more effective for reducing irritation. Among the differential markers associated with changes in irritation， the increase in the relative content of citral is closely related to the addition of ginger juice， while the decrease in the relative contents of cis-cinnamaldehyde， p-cymene， 1（10）-4-cadinadien-15-ol is related to heating， and the changes of other components may be related to the synergistic effect of heating and ginger juice.

Study on integrated technology of producing area processing and decoction pieces processing of Curcuma longa / 中国药房

OBJECTIVE To op timize the i ntegrated technology of producing area processing and decoction pieces processing of Curcuma longa （hereinafter refer to “integrated technology ”）. METHODS The content of ethanol-soluble extract in C. longa was determined by hot leaching method ；the contents of curcumin ，demethoxycurcumin and bisdemethoxycurcumin were determined by high performance liquid chromatography. On the basis of identification of producing area processing technology ， Using overall desirability （OD） value of the contents of ethanol-soluble extract ， curcumin， demethoxycurcumin and bisdemethoxycurcumin as evaluation indexes ，moisture content ，slice thickness and drying temperature as factors ，the integrated technology of C. longa was optimized by single factor tests combined with central composite design-response surface method ，and the validation tests were conducted. At the same time ，prepared product was compared with traditional decoction pieces prepared according to 2020 edition of Chinese Pharmacopoeia （part Ⅰ）. RESULTS The best integrated technology was that the fresh C. longa was boiled in boiling water for 5 min，dried at 50 ℃ to 40％ water content ，cut into 2 mm thin slices ，and dried at 50 ℃ until moisture content not exceeding 15.0％. After validation ，The deviation between the average OD value （0.811 3，RSD＝2.13％） and the predicted value （0.848 1）of the contents of ethanol-soluble extract ，curcumin，demethoxycurcumin and bisdemethoxycurcumin was 4.34％. OD value of the contents of ethanol-soluble extract ，curcumin，demethoxycurcumin and bisdemethoxycurcumin in decoction pieces prepared by integrated technology were all higher than those prepared by traditional technology. CONCLUSIONS The process optimized in this study is simple ，stable and feasible.

Changes and significance of monocytic myeloid-derived suppressor cells during acute phase of Kawasaki disease / 中华微生物学和免疫学杂志

Objective:To investigate the changes of monocytic myeloid-derived suppressor cells (M-MDSC) in children with acute Kawasaki disease (KD) and its roles in the immunological pathogenesis of KD.Methods:A total of 38 children with acute KD were enrolled in the present study and 32 age-matched healthy children were selected as control group. The proportions of HLA-DR -CD11b + CD33 + CD15 -CD14 + M-MDSC and CD4 + CD25 + CD127 - regulatory T cells (Treg) in peripheral blood, concentrations of reactive oxygen species (ROS) and expression of arginase-1 (Arg-1), CD39, CD73, CD40, CD40L and CCR5 at protein levels were detected by flow cytometry. Quantitative real-time PCR was used to evaluate the transcription levels of inducible nitric oxide synthase (iNOS) in M-MDSC and the transcription levels of cytotoxic T-lymphocyte associated antigen 4 (CTLA4) and lymphocyte-activation gene 3 (LAG3) in Treg. Concentrations of NO, CCL3, CCL4, CCL5, IL-10 and TGF-β in the supernatants of cell culture were measured by ELISA. Results:(1) The proportion of HLA-DR -CD11b + CD33 + CD15 -CD14 + M-MDSC, the concentration of intracellular ROS and the expression of iNOS, CD39 and CD73 in M-MDSC decreased significantly in patients with acute KD as compared with those in the control group ( P<0.05), and the concentrations of NO, IL-10 and TGF-β in culture supernatant of M-MDSC were lower than those in the control group upon lipopolysaccharide (LPS) stimulation for 48 h ( P<0.05). All of the aforementioned indexes restored to some extent after intravenous immunoglobulin (IVIG) therapy ( P<0.05). No statistical differences were found in Arg-1 expression between healthy controls and patients with KD before or after IVIG therapy ( P<0.05). (2) CD40 expression on M-MDSC was significantly lower in the acute KD group than in the control group ( P<0.05). The concentrations of CCL3, CCL4 and CCL5 in the culture supernatants of M-MDSC were lower in the acute KD group than in the control group after LPS stimulation ( P<0.05). With IVIG treatment, all of the indexes were up-regulated significantly ( P<0.05), although CD40 expression was still lower in the acute KD group than in the control group ( P<0.05). (3) The proportion of CD4 + CD25 + CD127 -Treg and the expression of CTLA4, LAG3, CD40L and CCR5 reduced significantly in patients with acute KD as compared those in healthy controls ( P<0.05), and all increased remarkably after IVIG therapy ( P<0.05). Pearson correlation analysis showed a positive correlation between the proportions of M-MDSC and Treg in patients with acute KD ( r=0.58, P<0.05). Conclusions:Insufficiency and impaired function of M-MDSC might be a major cause of immune dysfunction in patients with acute KD.

Liddle syndrome: case report and literature review / 中华全科医师杂志

The clinical data and the genetic study results of a patient with Liddle syndrome were reported.The genomic DNA of peripheral blood mononuclear cells was extracted and the mutation sites of all the exons in 36 genes related to hypokalemia were screened by high-throughput sequencing.Genetic validation of patients and their parents was performed by direct sequencing.The patient presented with severe hypokalemia,low aldosterone and hypertension.The results of gene sequencing showed that the SCNN1B gene exon 13 584 codon 1751C-T,and the corresponding encoded amino acid changed from alanine to valine (A-V).Eleven families and 33 cases of Liddle syndrome diagnosed by genetic analysis were reported in Chinese literature from 1998 to June 2018.The literature review showed that all patients had hypertension,87％ (28/32) had hypokalemia and 85％ (23/27) had low aldosterone.The onset age of 21 patients was＜20 year,among whom cerebral stroke occurred in 3 patients.The normal blood pressure can be achieved by low-salt diet and administration of amiloride or triamterene.The most common mutations were missense mutations (7/11).Liddle syndrome is a controllable and treatable disease,early detection,diagnosis and treatment can avoid serious complications.

Hashimoto's encephalopathy with disturbance of consciousness and dementia as initial symptoms: report of 2 cases and literature review / 中华全科医师杂志

Two eases of Hashimoto's encephalopathy (HE) are reported and relative literature is reviewed in this article.Both cases were female,with disturbance of consciousness and dementia as initial symptoms.Marked increase of anti-thyroid antibodies was found in serum of the patients.The symptoms disappeared after steroids and maintenance therapies.A total of 126 cases of HE in Chinese literature were retrieved from 2006 to 2015 through the databases of China National Knowledge Infrastructure and Wanfang Med Online.The male/female radio was 1 ∶ 6 with an average age of 51.3 years.The clinical manifestations included cognitive impairment (44.5％),epilepsy (38.3％),psychiatric disorders (27.3％),stroke-like symptoms (25.8％),disturbance of consciousness (24.2％),and extrapyramidal symptoms (20.3％).Good response to steroids was observed in 77.2％ HE patients.Analysis indicates that HE is an autoimmune disease with the presence of neurological and psychiatric manifestations,elevated titers of anti-thyroid antibodies in serum and well response to steroids,with a good prognosis.

Comparison of the outcome of premature babies fed by different ways / 中国基层医药

Objective To compare the body weight,height,head circumference of premature babies fed by different ways,and to analyze the advantages and disadvantages.Methods 260 premature infants were selected as the research subjects,according to random number table,they were divided into four groups.Group A:premature infant formula feeding,80 cases;Group B:pure breast feeding group,60 cases;Group C:normal full term formula feeding,60 cases;Group D:premature infant formula mixed breast feeding,60 cases.All children were fed at the first 12 to 24h after birth.The body weight,height,head circumference and catch up full term time were evaluation index. Results After correct gestational age 40 weeks,group B children'weight,height,head circumference were higher than other groups,group C was the lowest levels,the difference was statistically significant (F =3.563,P <0.05).Correct gestational age 1,3,6 months later,group A children'weight,height and head circumference index were higher than other feeding group,the level of group D was the second,the lowest level was group C,the differences were statistically significant (F =3.011,2.853,2.779,all P <0.05).In 6 months,group A,38.8% (31 /80),was the fastest one to reach the full term infant,the difference was statistically significant (χ2 =29.149,P <0.05).At other time,the pur-suing number of group A was bigger,but there was no statistically significant difference.Conclusion For premature babies,preterm infant formula milk powder or premature infant formula and milk feeding way is better than that of pure breast feeding and normal full term milk powder,which can guarantee the children's nutrition demand,shorten the time of pursuing full term infant,promote baby's health.

Clinical implications of rearrangements during transfection of papillary thyroid cancer (RET/PTC) 1,3 detected with FQ-PCR in fine-needle aspiration specimen of thyroid nodules / 中华内分泌代谢杂志

Objective To evaluate the clinical significance of rearrangements during transfection of papillary thyroid cancer (RET/PTC) 1,3 in fine needle aspiration (FNA) specimen from regional thyroid nodules by FQ-PCR.Methods Two hundred and eighty-five FNA samples were collected from patients with thyroid nodules during January 2012 to January 2013.RET/PTC1,3 rearrangements were detected with FQ-PCR.Results The frequencies of the RET/PTC1 and RET/PTC3 rearrangements in 285 FNA samples were 17.2％ (49/285) and 1.4％ (4/285),respectively.During 21.7 months of follow-up,19 (40.4％,19/47) RET/PTC1 positive patients were confirmed to have papillary thyroid carcinoma(PTC) after operation.In the patients with RET/PTC1 rearrangement PTC was found in Thy5 and Thy4 groups.In Thy 2 group,22.6％ cases with RET/PTC1 rearrangements developed PTC as compared with 3.2％ cases without it(x2 =6.667,P＜0.01).In addition,8.5％ (4/47) RET/PTC1 rearrangements emerged in benign lesions.Conclusions It is convenient and reliable to detect RET/PTC1,3 rearrangements by FQ-PCR using FNA samples.RET/PTC1 rearrangement frequently occurs in PTC,however it would be detected in benign lesions occasionally.

Pharmacokinetics of ginsenosides Rg1 and its metabolites in rats / 药学学报

To study the pharmacokinetics of ginsenosides Rg1 and its metabolites after iv and oral administration in Wistar rats, the LC-MS/MS method was selected to determine ginsenosides Rg1 and its metabolites in plasma and their pharmacokinetic parameters were calculated. After oral administration of ginsenosides Rg1 to rats, ginsenosides Rg1, Rh1, F1 and protopanaxatriol (Ppt) could be detected in plasma. Their Tmax were 0.92, 3.64, 5.17, and 7.30 h, respectively; MRT were 2.68, 5.06, 6.65, and 5.33 h, respectively; AUC(o-t), were 2 363.5, 4 185.5, 3 774.3, and 396.2 ng x mL(-1) x h, respectively. After iv administration of ginsenosides Rg1 to rats, ginsenosides Rg1, Rh1 and FI could be detected in plasma. Their T1/2betaS were 3.12, 5.87, and 6.87 h, respectively; MRTs were 1.92, 5.99, and 7.13 h, respectively; AUCo-tS were 1 454.7, 597.5, and 805.6 ng x mL(-1) x h, respectively. So, it can be concluded that after oral administration, the amounts of metabolites were higher than the prototype in vivo, and the distribution and elimination of the metabolites were relatively slow. After iv administration, the amount of prototype were higher than that of the metabolites in vivo, and the distribution and elimination of the metabolites were relatively slow.

The transition of uropathogens and drug resistance in patients with type 2 diabetes in recent 10 years / 中华临床感染病杂志

Objective To investigate the transition of uropathogens and drug resistance in patients with type 2 diabetes(T2DM)complicated with urinary tract infection(UTI)in recent 10 years.Methods A total of 392 cases of T2DM with UTI were included in the study.The patients were divided into 2 groups according to time of hospitalization:group A(January 1998 to December 2002)and group B(January 2003 to December 2007).Clinical information,distilbution of uropathogens and antibiotic resistance between the two groups were analyzed.Results The most common pathogens isolated were Escherichia coli(50/152,32.89%),followed by Candida albicans(21/152,13.82%)and Enterococcus faecium(15/152,9.87%).Of the various pathogenic organisms isolated in group B,there were 16 new species not seen in group A.Escherichia coli was found to have higher resistant rates to ciprofloxacin and ceftriaxone in group B than in group A(80.8%vs.42.8%,26.9%vs.0,respectively).Enterococcus faecium was found to be more susceptibility to tetracycline in group B than in group A(0 vs.100.O%).Conclusion Species of uropathogens in T2DM patients ale increased,and the isolates are of high drug resistance,which should be noted in clinic.

Inhibitory effect of total flavonoids from mulberry tree leaf on small intestine disaccharidases in diabetic rats / 中华内分泌代谢杂志

Objective To observe the hypoglycemic effect of total flavonoids from mulberry tree leaf (MTF) on diabetic rats and the effect of MTF on disaccharidases from rats. Methods Diabetic rats were treated with MTF, and then the change of blood glucose of these rats was observed; the brush border membrane from the small intestine of rats was stripped and homogenized, which was incubated with MTF and disaccharides, and the inhibitory rate of MTF on disaccharidases was determined. Blood samples from portal and peripheral veins were separately collected at 30, 60, 120 min after maltose solution was infused into small intestine in vivo, then the difference of blood glucose concentration between portal and peripheral veins was determined. Results MTF exerted a hypoglycemic effect on diabetic rats by inhibition of disaccharidases, the inhibitory rate of sucrase, maltase and lactase was 68.0%, 47.1%, 27.8% respectively, the difference of blood glucose concentration between portal and peripheral veins was also reduced. Conclusion The hypoglycemic effect of MTF on diabetic rats is probably via the inhibitory effect on small intestine disaccharidases in rats.