Objective To explore the antimicrobial resistance of carbapenem-resistant Klebsiella pneumoniae(CRKP)isolated from blood and the related risk factors for infection in patients.Methods Clinical data of 383 KP-infected patients from whose blood Klebsiella pneumoniae(KP)were isolated during hospitalization period in a hos-pital from January 2018 to December 2021 were retrospectively analyzed.Patients were divided into CRKP group(n=114)and non-CRKP group(n=269)based on antimicrobial resistance.According to the prognosis,114 patients in the CRKP group were subdivided into the death group(n=30)and the survival group(n=84).General informa-tion,underlying diseases,antimicrobial use,and infection outcomes of two groups of patients were compared,and risk factors for infection and death after infection were analyzed.Results The resistance rates of KP to tigecycline and compound sulfamethoxazole showed upward trends,with statistically significant differences(both P=0.008).The CRKP group had higher resistance rates to amikacin,aztreonam,compound sulfamethoxazole,ciprofloxacin,cefepime,cefoperazone/sulbactam,piperacillin/tazobactam,tigecycline,ceftazidime,tobramycin,and levofloxacin,as well as higher in-hospital mortality than the non-CRKP group,with statistically significant differences(all P＜0.05).Acute pancreatitis prior to infection(OR=16.564,P＜0.001),hypoalbuminemia(OR=8.588,P＜0.001),stay in in-tensive care unit prior to infection(OR=2.733,P=0.017),blood transfusion(OR=3.968,P=0.001),broncho-scopy(OR=5.194,P=0.014),surgery within 30 days prior to infection(OR=2.603,P=0.010),and treatment with carbapenems(OR=2.663,P=0.011)were independent risk factors for the development of CRKP blood-stream infection(BSI).Cardiac insufficiency before infection(OR=11.094,P=0.001),combined with pulmonary infection(OR=20.801,P=0.010),septic shock(OR=9.783,P=0.002),disturbance of consciousness(OR=11.648,P=0.001),and receiving glucocorticoid treatment(OR=5.333,P=0.018)were independent risk factors for mortality in patients with CRKP BSI.Conclusion The resistance rate of KP from BSI to tigecycline and com-pound sulfamethoxazole presents upward trend.Underlying diseases,invasive procedures,and carbapenem treat-ment are closely related to CRKP BSI.Cardiac insufficiency,pulmonary infection,septic shock,disturbance of con-sciousness,and glucocorticoid treatment can lead to death of patients with CRKP BSI.

Objective To investigate the effectiveness of team-based learning(TBL)combined with research-based learning(RBL)in enhancing evidence-based nursing practice skills of undergraduate nursing interns.Methods A total of 114 undergraduate nursing students who interned in the operating room of a ⅢA hospital in Guangzhou from July 2021 to April 2022 were selected as study subjects.A randomized cluster sampling method based on a random number table was used to divide the students into a control group and a trial group.The control group received traditional teaching methods,while the trial group was taught using a combination of TBL and RBL.The two groups were compared in terms of evidence-based practice skills,critical thinking abilities,and their evaluations on the teaching methods.Results The differences in evidence-based practice skills and critical thinking abilities before and after the internship were significantly higher in the observation group compared to the control group(t=35.108,35.897;both P<0.05).Additionally,post-internship evaluation scores for the teaching methods in the trial group were significantly higher than those in the control group(t=-17.580,P<0.05).Conclusion TBL combined with RBL effectively enhances the evidence-based nursing practice skills and critical thinking abilities of undergraduate nursing interns.This approach also improves students'evaluations on the teaching methods and fosters the cultivation of excellent clinical evidence-based nursing professionals.

Objective To study the role of red blood cell distribution width(RDW)in the prognosis evaluation of multidrug-resistant organism(MDRO)pulmonary infection(PI)in patients in intensive care unit(ICU).Methods Patients with MDRO PI in the ICU of a hospital from January 2021 to December 2022 were selected,they were di-vided into good prognosis group and poor prognosis group based on the prognosis.Basic information and serological indicators between two groups of patients were compared,including RDW(RDW coefficient of variation[RDW-CV],RDW standard deviation[RDW-SD]),D-dimer,procalcitonin(PCT),high-sensitivity troponin(TNTsh),N-terminal pro-B-type natriuretic peptide(NT-proBNP),erythrocyte sedimentation rate(ESR),C-reactive protein(CRP),and interleukin-6(IL-6).Univariate t-test and multiple logistic regression were adopted to analyze the cor-relation factors between serological indicators and the prognosis of MDRO PI patients,receiver operating characte-ristic(ROC)curves were used to evaluate the predictive efficacy of RDW on the prognosis of MDRO PI patients.Results A total of 275 cases of MDRO PI were included in analysis,age range from 22 to 99 years old;181 cases(65.8％)were in good prognosis group,94 cases(34.2％)in poor prognosis group.The levels of PCT,D-dimer,RDW-CV,RDW-SD,TNTsh,and NT-proBNP in the poor prognosis group were all higher than those in the good prognosis group,differences were all statistically significant(all P＜0.05).Multivariate logistic regression analysis showed that the increase of RDW-CV(OR-19.011,95％CI[5.247-68.882],P＜0.05)and RDW-SD(OR=13.693,95％CI[3.820-49.087],P＜0.05)were associated with poor prognosis in patients with MDRO PI.ROC curve results showed that the areas under the curve of RDW-CV and RDW-SD were 0.901 and 0.896,respec-tively,with optimal cutoff values of 14.45％and 49.60％,respectively.Conclusion This study suggests that RDW value is closely related to the disease outcome of MDRO PI patients,and is expected to become one of the prog-nostic evaluation indicators,achieve early intervention and risk assessment.

The Baimai Ointment with the effect of relaxing sinew and activating collaterals demonstrates a definite effect on Baimai disease with pain, spasm, stiffness and other symptoms, while the pharmacodynamic characteristics and mechanism of this agent remain unclear. In this study, a rat model of chronic compression of L4 dorsal root ganglion(CCD) was established by lumbar disc herniation, and the efficacy and mechanism of Baimai Ointment in the treatment of CCD were preliminarily explored by behavioral tests, side effect evaluation, network analysis, antagonist and molecular biology verification. The pharmacodynamic experiment indicated that Baimai Ointment significantly improved the pain thresholds(mechanical pain, thermal pain, and cold pain) and gait behavior of CCD model rats without causing tolerance or obvious toxic and side effects. Baimai Ointment inhibited the second-phase nociceptive response of mice in the formalin test, increased the hot plate threshold of normal mice, and down-regulated the expression of inflammatory cytokines in the spinal cord. Network analysis showed that Baimai Ointment had synergistic effect in the treatment of CCD and was related to descending inhibition/facilitation system and neuroinflammation. Furthermore, behavioral tests, Western blot, and immunofluorescence assay revealed that the pain-relieving effect of Baimai Ointment on CCD may be related to the regulation of the interaction between neuroactive ligand and receptors(neuroligands) such as CHRNA7, ADRA2A, and ADRB2, and the down-regulation of the expression of NOS2/pERK/PI3K, the core regulatory element of HIF-1 signaling pathway in spinal microglia. The findings preliminarily reveal the mechanism of relaxing sinew and activating collaterals of Baimai Ointment in the treatment of Baimai disease, providing a reference for the rational drug use and further research of this agent.
Rats ; Mice ; Animals ; Chronic Pain/metabolism* ; Rats, Sprague-Dawley ; Ganglia, Spinal/metabolism* ; Ligands ; Signal Transduction ; Hyperalgesia/metabolism* ; Drugs, Chinese Herbal

Looking retrospectively at the development of humanity, vaccination is an unprecedented medical landmark that saves lives by harnessing the human immune system. During the ongoing coronavirus disease 2019 (COVID-19) pandemic, vaccination is still the most effective defense modality. The successful clinical application of the lipid nanoparticle-based Pfizer/BioNTech and Moderna mRNA COVID-19 vaccines highlights promising future of nanotechnology in vaccine development. Compared with conventional vaccines, nanovaccines are supposed to have advantages in lymph node accumulation, antigen assembly, and antigen presentation; they also have, unique pathogen biomimicry properties because of well-organized combination of multiple immune factors. Beyond infectious diseases, vaccine nanotechnology also exhibits considerable potential for cancer treatment. The ultimate goal of cancer vaccines is to fully mobilize the potency of the immune system as a living therapeutic to recognize tumor antigens and eliminate tumor cells, and nanotechnologies have the requisite properties to realize this goal. In this review, we summarize the recent advances in vaccine nanotechnology from infectious disease prevention to cancer immunotherapy and highlight the different types of materials, mechanisms, administration methods, as well as future perspectives.

Objective:To investigate the effect of growth hormone (GH) supplementation during luteal phase one cycle before ovulation induction in patients undergoing in vitro fertilization-embryo transfer (IVF-ET).Methods:IVF-ET pregnancy-assisted patients who underwent long-term Gonadotropin Releasing Hormone-agonist (GnRH-a) protocol from January 1, 2019 to June 30, 2020 were collected from the Reproductive Center of Hunan Provincial Maternal and Child Health Hospital. Among them, 106 patients (GH group) were added with GH during luteal phase one cycle before ovulation induction, and 212 patients (control group) were not added with GH. Ovulation induction and pregnancy outcome were compared between the two groups.Results:(1) There was no statistically significant difference in primary infertility/secondary infertility rate, infertility years, age, and transplant cancellation cycle rate between the two groups (all P>0.05). (2) There were no significant differences in the number of oocytes obtained, MII oocytes, two pronucleus (2PN) oocytes, high-quality embryos and average number of transplanted embryos between GH group and control group (all P>0.05). The total amount of Gn in control group and GH group was (2 109.75±555.75)IU and (1 863±610.52)IU, respectively, with statistically significant difference ( P<0.05). (3) The embryo implantation rate of the control group and GH group was 43.73%(129/295) and 60.42%(87/144), respectively, with statistically significant difference ( P<0.05). The clinical pregnancy rates of the control group and GH group were 58.79%(107/182) and 71.91%(64/89), the difference was statistically significant ( P<0.05). The spontaneous abortion rate of early pregnancy in control group (4.67%, 5/107) was slightly higher than that in GH group (3.12%, 2/64), but there was no significant statistical difference ( P>0.05). Conclusions:For patients with normal ovarian response, adding small dose of growth hormone during luteal stage one cycle before controlled hyperovulation can improve the embryo implantation rate and clinical pregnancy rate, and reduce the amount of Gn, which is beneficial to patients.

OBJECTIVES: To study the clinical features of intestinal polyps and the risk factors for secondary intussusception in children. METHODS: A retrospective analysis was performed for the medical data of 2 669 children with intestinal polyps. According to the presence or absence of secondary intussusception, they were divided into two groups: intussusception (n=346) and non-intussusception (n=2 323). Related medical data were compared between the two groups. The multivariate logistic regression analysis was used to identify the risk factors for secondary intussusception. RESULTS: Among the children with intestinal polyps, 62.42% were preschool children, and the male/female ratio was 2.08∶1; 92.66% had hematochezia as disease onset, and 94.34% had left colonic polyps and rectal polyps. There were 346 cases of secondary intussusception, with an incidence rate of 12.96% (346/2 669). Large polyps (OR=1.644, P<0.001), multiple polyps (≥2) (OR=6.034, P<0.001), and lobulated polyps (OR=93.801, P<0.001) were the risk factors for secondary intussusception. CONCLUSIONS Intestinal polyps in children often occur in preschool age, mostly in boys, and most of the children have hematochezia as disease onset, with the predilection sites of the left colon and the rectum. Larger polyps, multiple polyps, and lobulated polyps may increase the risk of secondary intussusception, and endoscopic intervention is needed as early as possible to improve prognosis.
Child, Preschool ; Female ; Gastrointestinal Hemorrhage ; Humans ; Intestinal Polyps/complications* ; Intussusception/complications* ; Male ; Retrospective Studies ; Risk Factors

Humans ; Thyroid Cancer, Papillary ; Carcinoma, Papillary/surgery* ; Thyroid Neoplasms/surgery*

Most obsessive-compulsive disorder patients get sick in childhood, adolescence and early adulthood, which has a serious impact on their psychosocial function. Childhood and adolescence are critical period of neurological development. Affected by genetic and environmental factors, individuals often have neuronal damage, abnormal myelination, synaptic overpruning, abnormal synaptic connections and so forth. Pediatric obsessive-compulsive disorder is closely related to neurodevelopmental, which may involve genetic variation, immune activation, neurotransmitter disorders and functional and structural abnormalities of key brain regions in the cortico-striato-thalamo-cortical.With the development of neuroimaging, optogenetics and other advanced technologies, the dynamic development process of the brain has been further understood, and the etiological mechanism of pediatric obsessive-compulsive disorder has been further explored.This paper summarized the latest researches in this field, focusing on neurodevelopment, and expounds the possible pathophysiological mechanism of obsessive-compulsive disorder from the perspectives of neuroimmunology, neurostructure, neuroimaging, neurobiochemistry and other disciplines. It provides a new idea for the early accurate diagnosis, recognition and intervention of obsessive-compulsive disorder.

Objective:To explore effects of controlled ovarian stimulation (COS) protocols on pregnancy outcomes for patients with polycystic ovarian syndrome (PCOS) undergoing in vitro fertilization-embryo transfer (IVF-ET). Methods:A total of 1 032 patients with PCOS who underwent IVF-ET from September 1, 2016 to July 31, 2020 in the Reproductive Center of Hunan Provincial Maternal and Child Health Care Hospital were retrospectively analyzed. The patients were divided into modified long regimen group (group A, 126 cases), luteal phase long regimen group (group B, 185 cases), antagonist regimen group (group C, 344 cases), and progestin primed ovarian stimulation (PPOS) group(group D, 377 cases) according to different ovulation stimulation regimens. The ovulation promotion status [days of gonadotropin (Gn), total amount of Gn, estradiol (E 2) level on the day of human chorionic gonadotropin (HCG) injection, number of retrieved eggs, number of mature eggs (MII eggs), number of normal fertilized embryos (2PN), number of high-quality embryos] and the first frozen embryo transfer pregnancy status (clinical pregnancy rate, implantation rate, early abortion rate) were compared among the patients in each group. Results:(1) There was no significant difference in general clinical data between the four groups (all P>0.05). (2) The number of Gn days in group D was significantly less than that in groups A, B and C, and the total number of Gn was significantly less than that in groups A, B and C (all P<0.05); The E 2 level of patients in group C and group D on the day of hCG injection was significantly lower than that of group A and group B (all P<0.05); The number of eggs obtained and MII eggs in group C and group D were significantly lower than those in group A and group B (all P<0.05); The number of high-quality embryos and 2PN in group D were significantly different from those in group A, group B and group C (all P<0.05). (3) The clinical pregnancy rates of the first frozen embryo transfer after whole embryo cryopreservation in group A, group B, group C and group D were 54.72%(29/53), 56.79%(46/81), 52.56%(82/156) and 54.32%(195/359), respectively, with no significant difference among the four groups (all P>0.05). There was no significant difference in embryo implantation rate and early abortion rate among the four groups (all P>0.05). Conclusions:The modified long regimen, luteal phase long regimen, antagonist regimen and PPOS regimen can achieve better pregnancy outcomes in patients with PCOS. Among them, PPOS regimen can reduce the amount and time of Gn, and frozen embryo transfer does not affect the pregnancy outcome of patients. It can be used as one of the priority recommended strategies for PCOS patients who plan to undergo frozen embryo transfer.