Riboswitches are cis-acting domains located in mRNA sequences that could regulate gene expression by sensing small molecules without employing protein. Most known riboswitches in bacteria have naturally evolved to bind essential metabolite ligands and are involved in the regulation of critical genes that are responsible for the biosynthesis or transport of the cognate ligand. The riboswitch-mediated gene expression could be repressed by metabolite analogs, which caused bacterial growth inhibition or even death. A number of leading compounds targeting riboswitches have been discovered. A promising avenue for the development of new class of riboswitch-based antibiotics has been opened. Herein we reviewed the current findings of riboswitches that served as targets for antibacterial drug development and the underlying mechanisms. The development of high-throughput methods and rational drug design for riboswitch-specific drug discovery are relevant challenges are discussed. summarized.

Electrochemiluminescence was used to determine thyroid function and thyroid autoantibodies in 140 pregnant women,who were then divided into normal group (n =117) and subclinical hypothyroidism group (n =23) based on the thyroid function.The urine iodine level in the pregnant women was detected by arsenic cerium catalytic spectrophotometric method.The awareness of past history of thyroid disease among the subjects with thyroid dysfunctions were investigated.The results showed that the prevalences of iodine deficiency were 50％ and 57％ in the normal group and the subclinical hypothyroidism group,respectively.The state of iodine level was not related to thyroid function.The levels of serum thyroid peroxidase antibody (TPOAb) and thyroglobulin antibody were markedly related to serum TSH(P＜0.01),so was the level of serum TPOAb related to serum FT4 (P＜0.05).Among the subclinical hypothyroidism women,70％ did not undergo thyroid function and thyroid autoantibodies screening before pregnancy,8.7％ denied past history of thyroid disease,and 21.7％ suffered from hypothyroidism before pregnancy.Therefore,we advocate the screening of urine iodine and thyroid autoantibodies before or during the first trimester of pregnancy,aiming to correct iodine deficiency,avoid supplementing too much iodine,improve the outcome of perinatal stage,and reduce all the negative effects on the offsprings.

Objective:To examine the effect of penetrating humanistic care educationin to gynecological clinical practice teaching to nursing students′humanistic care ability. Methods:A total of 236 nursing students in the First Affiliated Hospital of Xi′an Jiaotong University were allocated to the experimental group ( n=123 ) with the clinical practice teaching methods, of which the core was training humanistic care ability, while the control group ( n=113) in the Second Affiliated Hospital of Xi′an Jiaotong University with the routine method, which mainly trained the operating skills. The humanistic caring ability between these two group students was compared. Results: Be-fore the internship, there was no statistical significance between the two groups (P>0. 05). After the internship, the rewere no significant difference ( P>0 . 05 ) in the scores of assisting to meet the basic needs,providing a good environment, andhelping to solve the difficulty. For the dimensions ofinfusing faith and hope,health education,humanistic and altruistic value,solving health problems scientifically,promoting emotional com-munication, and the total scale, the scores were significantly higher than those of the control group (P<0. 05). Conclusion:In the clinical practice teaching, permeating humanistic care education helps to improve the nursing students′ability of humanistic care.

Objective To observe the curative effect of Bairui Granules combined with amoxicillin and clavulanate potassium tablets in treating acute tonsillitis. Methods A total of 200 patients with acute tonsillitis treated in Dongfang Hospital from February to November in 2017 were randomly divided into the treatment group and the control group according to the random number table method. A total of 100 cases in the control group was treated with amoxicillin and clavulanate potassium tablets, 100 cases in the treatment group received Bairui Granules combined with amoxicillin and clavulanate potassium tablets, each group was treated for 5 d as one course. The clinical symptoms and signs improving time of two groups were observed and the therapeutic effects of the two groups were compared and analyzed. Result In the treatment group, the time of heat withdrawal and sore throat disappeared was significantly less than that of the control group (P < 0.01); After one course of treatment, the total effective rate of the treatment group was significantly higher than that of the control group (P < 0.05). In the two groups, there was no adverse reaction during the treatment. Conclusion Bairui Granules combined with amoxicillin and clavulanate potassium tablets had the advantages of short course and higher effect in the treatment of acute tonsillitis.

Follicle-stimulating hormone (FSH) is a pituitary glycoprotein hormone that is essential for the development of ovarian follicles and testicular seminiferous tubules. The relatively short half-life of FSH in vivo requires daily injections for more than 10 days that is inconvenient and possibly contribute to the stress perceived by the patients. The goal of the present study was to increase FSH glycosylation, in order to develop a long-acting recombinant FSH. The cDNA of native alpha and beta subunit of human FSH was linked by a sequence with two N-linked glycosylation sites, and the resulted DNA was inserted into pcDNA3.1 vector to generate a recombinant vector of pcDNA3.1-FSH. The pcDNA3.1-FSH was linearized and transfected into CHO-K1, positive transformants were selected by G418 and confirmed by PCR and Western blotting. A single chain recombinant FSH was expressed, with molecular weight of about 49 kDa. The recombinant FSH expression level in CHO-K1 cell strain in serum-free culture was 3 mg/L. Single injection of this recombinant FSH could induce folliculogenesis and ovulation in rats, the efficacy was similar with the commercially available FSH preparation (Folltropin-V) administrated 8 times consecutively. The results suggested a long-acting FSH was produced successfully.
Animals ; CHO Cells ; Cricetinae ; Cricetulus ; Female ; Follicle Stimulating Hormone, Human ; biosynthesis ; Genetic Vectors ; Half-Life ; Humans ; Ovarian Follicle ; drug effects ; Ovulation ; drug effects ; Rats ; Recombinant Proteins ; biosynthesis ; Transfection

To investigate the plasma thioredoxin-interacting protein ( TXNIP ) levels in different glucose tolerance groups and discuss the relationship between TXNIP and insulin resistance/β-cell dysfunction in diabetes and prediabetes, and to investigate the potential relationship between TXNIP and interleukin-1β( IL-1β) . According to oral glucose tolerance test, 93 participants were divided into 3 groups:diabetes mellitus group, prediabetes group, and normal glucose tolerance group. Plasma TXNIP, IL-1β, and other biochemical indices were measured. The relationship between TXNIP and glucose, IL-1β, homeostasis model assessment for insulin resistance ( HOMA-IR) , and homeostasis model assessment forβcell function ( HOMA-β) were analyzed by using multiple linear regression techniques and Pearson’s linear correlation analysis. Plasma TXNIP level was higher in prediabetes group compared with normal glucose tolerance group, but lower in prediabetes group compared with diabetes mellitus group[(355. 35±31. 88 vs 274. 36±33. 86, 426. 16±63. 15)pg/ml, P<0. 01 or P<0. 05]. TXNIP was positively correlated with IL-1βand HOMA-IR, but negatively correlated with HOMA-β. Multiple linear regression analysis indicated that IL-1βexerted significant influence on TXNIP ( P<0. 05 ). Plasma TXNIP level is affected by blood glucose concentration. There is a close relationship between TXNIP and IL-1β. In prediabetes patient, the TXNIP levels have already been raised.

Cornus ; Deglutition Disorders ; Humans ; Laryngeal Diseases ; Neck Injuries ; Thyroid Cartilage/surgery*

Renal transplantation is one of the most effective treatment methods for end-stage renal diseases. However, some recipients present with fatigue symptoms after renal transplantation. Fatigue not only affects the quality of life, but also reduces the compliance of recipients with immunosuppressive agents. To strengthen the attention of medical staff to the fatigue, make early diagnosis and deliver effective interventions for renal transplant recipients, the current situation, risk factors and intervention methods of fatigue in renal transplant recipients were reviewed in this article.

OBJECTIVETo observe the effect of Shouwu-Huanjing Recipe(SWHJR) medicated serum on human sperm motility and fertility in vitro.

METHODSHuman sperm was co-cultured with SWHJR medicated serum in vitro. Human sperm motility was evaluated by computer-assisted semen analysis(CASA). The acrosome reaction and the capability of penetrating zona-free hamster eggs were also observed.

RESULTSThe co-cultured SWHJR medicated serum significantly increased the sperm motion velocity(VAP, VCL, VSL) (P < 0.01), the amplitude of lateral head movement (ALH) and the beat frequency of flagellum(BCF), the density of progressive motility sperms (P < 0.05), the acrosome reaction rate(P < 0.001), the fertilization rate(FR) and the fertilization index (FI) in sperm penetration assay(SPA) test (P < 0.01). The stimulation of SWHJR medicated serum occurred in dose-dependent manner.

CONCLUSIONSWHJR can improve human sperm motility and fertility.

Acrosome Reaction ; Animals ; Cricetinae ; Fertility ; drug effects ; Humans ; Male ; Medicine, Chinese Traditional ; Mesocricetus ; Rats ; Rats, Sprague-Dawley ; Sperm Motility ; drug effects

In China， about 100 million people currently have chronic obstructive pulmonary disease （COPD）. At the same time， COPD is a multisystem disease， not only affecting the function of musculoskeletal， cardiovascular， kidney and immune systems in patients， but also causing intestinal dysfunction as its extrapulmonary manifestations. From the perspective of traditional Chinese medicine （TCM）， after COPD is formed， deficiency， phlegm stasis and toxicity were accumulated in the lungs， which leads to dysfunction of lung in dispersing and descending， and eventually causes ascending and descending disorder of Qi activities， disorder of fluid supply and distribution， and stagnation of blood stasis. The viscera disease would affect the bowels， and the large intestine is thus affected. Modern medical discovers that， the lungs and intestines have common origins and similar physiological structures， in pathological circumstances， their common mucosal immune system may lead to similar immune factors and inflammatory manifestations in the lungs and intestines. At the same time， the studies have confirmed that there is also a close relationship between intestinal flora and lung， that is "lung-gut axis". These theories partially illustrate the mechanism of COPD in inducing intestinal injury. The specific manifestations of COPD intestinal dysfunction， ① Flora disorder， with increased abundance of intestinal gram-negative bacilli， and inhibited reproduction of Bifidobacterium， Lactobacillus and short-chain fatty acid-producing bacteria. ② Intestinal barrier damage： characterized by the destruction of intestinal epithelium tight connectivity， increased intestinal permeability， and thinning of the mucus layer. ③ Intestinal motility disorder： mostly manifested as weight loss and malnutrition. At present， for the intestinal dysfunction in COPD patients， most of the relevant discussions and targeted treatment methods in TCM are scattered and unsystematic. Guided by the idea of treating different diseases with the same treatment， we summarized the etiology and pathogenesis of COPD intestinal dysfunction by learning from the experience of TCM in treating intestinal flora disorders and inflammatory bowel disease， and proposed preliminary formulation with Tiaoqi Qushi，Tongfu Tongluo as its basic treatment principles in this paper， hoping to provide new ideas for the treatment of COPD.