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1.
Article in Chinese | WPRIM | ID: wpr-928733

ABSTRACT

OBJECTIVE@#To explore the expression levels and clinical significance of helper T cell 1/helper T cell 2 (Th1/Th2) cytokine and interleukin-6 (IL-6) in patients with acute leukemia (AL) complicated by infection.@*METHODS@#68 patients with AL complicated by infection admitted to Wuhan Fifth Hospital from May 2017 to January 2020 were enrolled as study group, 50 AL patients without infection were enrolled as AL group, and 30 healthy volunteers checked in physical examination center were enrolled as healthy control group. The levels of serum tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6) and interleukin-10 (IL-10), and peripheral blood Th1/Th2 cells subsets were measured and compared among the three groups. The serum IL-6, IL-10, TNF-α and Th1/Th2 were compared between the patients with mild to moderate infection (n=52) and septic shock (n=16). The relationship between IL-6, IL-10, TNF-α, Th1/Th2 and AL infection was analyzed.@*RESULTS@#The levels of IL-6, IL-10 , TNF-α, and the proportion of Th2 of the patients in study group and AL group were significantly higher than those in healthy control group (P<0.001), while the proportion of Th1 and Th1/Th2 were significantly lower than those in healthy control group (P<0.001). The levels of IL-6, IL-10 and TNF-α, and the proportion of Th2 the patients in study group were significantly higher than those in AL group (P<0.001), while the proportion of Th1 and Th1/Th2 were significantly lower than those in AL group (P<0.001). The serum IL-6, IL-10 and TNF-α level of the patients in septic shock group were significantly higher than those in mild-to-moderate infection group (P<0.001), while Th1/Th2 was lower than those in mild-to-moderate infection group (P<0.001). The results of ROC curve analysis showed that the area under the ROC curve (AUC) values of IL-6, IL-10, TNF-α and Th1/Th2 alone for the diagnosis of septic shock were 0.779, 0.761, 0.724 and 0.718, which were lower than that their combination (0.910) (P<0.05).@*CONCLUSION@#The levels of serum IL-6, IL-10 and TNF-α are high in patients with AL complicated infection and septic shock, while Th1/Th2 cell subsets is low. The combined detection of serum IL-6, IL-10, TNF-α and Th1/Th2 is a good diagnostic value for predicting the occurrence of severe septic shock.


Subject(s)
Cytokines/metabolism , Humans , Interleukin-10 , Interleukin-6/metabolism , Leukemia/metabolism , Shock, Septic/metabolism , Th1 Cells/metabolism , Th2 Cells/metabolism , Tumor Necrosis Factor-alpha/metabolism
2.
Article in Chinese | WPRIM | ID: wpr-928108

ABSTRACT

Mycena, a symbiont of Gastrodia elata, promotes seed germination of G. elata and plays a crucial role in the sexual reproduction of G. elata. However, the lack of genetic transformation system of Mycena blocks the research on the interaction mechanism of the two. In order to establish the protoplast transformation system of Mycena, this study analyzed the protoplast enzymatic hydrolysis system, screened the resistance markers and regeneration medium, and explored the transient transformation. After hydrolysis of Mycena hyphae with complexes enzymes for 8 h and centrifugation at 4 000 r·min~(-1), high-concentration and quality protoplast was obtained. The optimum regeneration medium for Mycena was RMV, and the optimum resistance marker was 50 mg·mL~(-1) hygromycin. The pLH-HygB-HuSHXG-GFP-HdSHXG was transformed into the protoplast of Mycena which then expressed GFP. The established protoplast transformation system of Mycena laid a foundation for analyzing the functional genes of Mycena and the molecular mechanism of the symbiosis of Mycena and G. elata.


Subject(s)
Agaricales , Gastrodia/genetics , Protoplasts , Symbiosis/genetics , Transformation, Genetic
3.
Article in Chinese | WPRIM | ID: wpr-879441

ABSTRACT

OBJECTIVE@#To explore the clinical effect of the simple nucleus pulposus removal and small incision interlaminar window in the treatment of prolapsed and displaced lumbar disc herniation.@*METHODS@#From February 2016 to February 2018, 35 patients with single-segment prolapse and displaced lumbar disc herniation were treated by the simple nucleus pulposus removal and small incision interlaminar window under general anesthesia. Among them, there were 21 males and 14 females;aged (42±17) years;27 cases of L@*RESULTS@#All the operations were successful and the operation time was 30 to 60 min with an average of 40 min, the intraoperative blood loss was 10 to 30 ml with an average of 20 ml. All the patients were followed up for 1 to 3 years with an average of 1.2 years. Thirty-five patients with low back pain and lower limb symptoms were significantly relieved or disappeared. According to modified Macnab standard, 29 cases obtained excellent results, 5 good, and 1 fair.@*CONCLUSION@#Applying the concept of minimally invasive operation, small incision interlaminar window and simple nucleus pulposus removal for the treatment of prolapsed and displaced lumbar disc herniation has the advantages of short operation time, definite curative effect, and less trauma. And it is a safe and effective surgical method under the premise of strict control of the indications.


Subject(s)
Adult , Diskectomy, Percutaneous , Endoscopy , Female , Humans , Intervertebral Disc Displacement/surgery , Lumbar Vertebrae/surgery , Male , Middle Aged , Nucleus Pulposus , Prolapse , Retrospective Studies , Treatment Outcome
4.
Acta Pharmaceutica Sinica B ; (6): 3035-3059, 2021.
Article in English | WPRIM | ID: wpr-922741

ABSTRACT

Various boron-containing drugs have been approved for clinical use over the past two decades, and more are currently in clinical trials. The increasing interest in boron-containing compounds is due to their unique binding properties to biological targets; for example, boron substitution can be used to modulate biological activity, pharmacokinetic properties, and drug resistance. In this perspective, we aim to comprehensively review the current status of boron compounds in drug discovery, focusing especially on progress from 2015 to December 2020. We classify these compounds into groups showing anticancer, antibacterial, antiviral, antiparasitic and other activities, and discuss the biological targets associated with each activity, as well as potential future developments.

5.
Neuroscience Bulletin ; (6): 1570-1582, 2021.
Article in English | WPRIM | ID: wpr-922660

ABSTRACT

Human genetic prion diseases (gPrDs) are directly associated with mutations and insertions in the PRNP (Prion Protein) gene. We collected and analyzed the data of 218 Chinese gPrD patients identified between Jan 2006 and June 2020. Nineteen different subtypes were identified and gPrDs accounted for 10.9% of all diagnosed PrDs within the same period. Some subtypes of gPrDs showed a degree of geographic association. The age at onset of Chinese gPrDs peaked in the 50-59 year group. Gerstmann-Sträussler-Scheinker syndrome (GSS) and fatal familial insomnia (FFI) cases usually displayed clinical symptoms earlier than genetic Creutzfeldt-Jakob disease (gCJD) patients with point mutations. A family history was more frequently recalled in P105L GSS and D178N FFI patients than T188K and E200K patients. None of the E196A gCJD patients reported a family history. The gCJD cases with point mutations always developed clinical manifestations typical of sporadic CJD (sCJD). EEG examination was not sensitive for gPrDs. sCJD-associated abnormalities on MRI were found in high proportions of GSS and gCJD patients. CSF 14-3-3 positivity was frequently detected in gCJD patients. Increased CSF tau was found in more than half of FFI and T188K gCJD cases, and an even higher proportion of E196A and E200K gCJD patients. 63.6% of P105L GSS cases showed a positive reaction in cerebrospinal fluid RT-QuIC. GSS and FFI cases had longer durations than most subtypes of gCJD. This is one of the largest studies of gPrDs in East Asians, and the illness profile of Chinese gPrDs is clearly distinct. Extremely high proportions of T188K and E196A occur among Chinese gPrDs; these mutations are rarely reported in Caucasians and Japanese.


Subject(s)
14-3-3 Proteins/cerebrospinal fluid , China , Creutzfeldt-Jakob Syndrome/genetics , Humans , Mutation/genetics , Prion Diseases/genetics , Prion Proteins/genetics , Prions/genetics , tau Proteins/cerebrospinal fluid
6.
Article in Chinese | WPRIM | ID: wpr-912803

ABSTRACT

The development of information technology in the medical industry is accelerating the construction of 3-level rehabilitation networks centering on community-based rehabilitation, which is based on the Internet and in combination with the Internet of things(IOT). A municipal rehabilitation hospital cooperated with the health centers of sub-district communities in the city to build a remote rehabilitation network based on IOT technology, for rehabilitation training of community stroke patients. The two sides worked out a cooperation scheme on project management, designed and built a remote community rehabilitation management model. Under the remote monitoring and equipment data IOT, the medical team of the municipal rehabilitation hospital could formulate the therapeutic plan according to the immediately obtained relevant functional evaluation data, and the medical team of the community health service center was responsible for the implementation of the plan. Fifty-three patients in the experimental group received the training of remote lower limb intelligent feedback system based on IOT together with routine rehabilitation training. After 8 weeks of treatment, the functional evaluation data of the two groups were improved in varying degrees( P< 0.05), but the improvement of the experimental group was significantly better than that of the control group( P < 0.05). Remote rehabilitation under the construction path of remote rehabilitation network based on IOT technology could significantly promote the improvement of post-functional rehabilitation of community stroke patients. This study can provide reference for the construction of three-level remote rehabilitation networks based on IOT and the implementation of home-based remote rehabilitation therapy in the future.

7.
Chinese Journal of Geriatrics ; (12): 1275-1279, 2021.
Article in Chinese | WPRIM | ID: wpr-911002

ABSTRACT

Objective:To assess the safety and efficacy of Anthocyanins for the treatment of Alzheimer's disease.Methods:From November 2018 to December 2020, a multicenter, double-blind, randomized controlled clinical study was conducted in 6 hospitals.The regular medication for the two groups was memantine, with the addition of a combination preparation containing Anthocyanins for the experimental group and a placebo for the control group.The Mini-Mental State Scale(MMSE), Montreal Cognitive Assessment Scale(MoCA), Alzheimer's Disease Assessment Scale-Cognitive Subscale(ADAS-cog), Activities of Daily Living Scale(ADCS-ADL)and Hamilton Depression Scale(HAMD)were used for assessment at the beginning.After 16 weeks of treatment, MMSE, MoCA, ADCS-ADL, ADAS-cog and the Clinician's Interview-Based Impression of Change Plus Caregiver Input(CIBIC-Plus)Scale were conducted and adverse events were recorded.Results:A total of 66 patients were enrolled, with 33 in the control group and 33 in the experimental group.There were no significant differences in cognitive function scores between the two groups before enrollment.Differences in MMSE scores, MOCA scores and ADAS-cog scores before and after treatment between the control group and the experimental group were 1.9±2.4 vs.3.4±2.0( t=2.62, P=0.011), 1.8±1.9 vs.2.9±1.4( t=2.45, P=0.018)and 3.0±2.3 vs.5.3±4.6( t=2.45, P=0.019), respectively.The differences were statistically significant.Instrumental activities of daily living(IADL)scores before and after treatment in the control group were 21.6±5.7 vs.22.6±6.2( t= 2.09, P= 0.046), and those in the experimental group were 22.7±5.4 vs.23.4±5.4( t= 2.45, P= 0.021). The differences between the two groups before and after treatment were statistically significant. Conclusions:Treatment with Anthocyanins can delay the decline of cognitive function and activities of daily living ability in patients with Alzheimer's disease.Anthocyanins may be a promising therapeutic drug for Alzheimer's disease in the future.

8.
Article in Chinese | WPRIM | ID: wpr-905999

ABSTRACT

Objective:To study the effects of 24-epibrassinolide (EBR) at different concentrations on seed germination, seedling growth and key enzyme activities for flavonoid biosynthesis in <italic>Astragalus membranaceus </italic>var.<italic> mongholicus</italic> under polyethylene glycol (PEG)-induced drought stress, in order to provide theoretical reference for standardizing the drought-resistant cultivation techniques of <italic>A. membranaceus </italic>var.<italic> mongholicus</italic>. Method:The seeds of <italic>A. membranaceus </italic>var.<italic> mongholicus </italic>were soaked in EBR solution at different concentrations(0.001, 0.01, 0.1, 1, 10 μmol·L<sup>-1</sup>) followed by foliar spraying to explore their effects on seed germination, seedling growth, photosynthesis, chlorophyll and malondialdehyde (MDA) contents, and key enzyme activities for flavonoid biosynthesis under drought stress induced by 20% polyethylene glycol (PEG)-6000. Result:Compared with the control(CK)group, PEG-induced drought stress led to an obvious decrease in germination potential, germination rate, germination index, vigor index, relative germination rate, plant height, root length, aboveground and root dry weight, net photosynthetic rate (<italic>Pn</italic>), stomata conductance (<italic>Gs</italic>)<italic>, </italic>transpiration rate (<italic>Tr</italic>), chlorophyll contents and chlorophyll a/b ratio, while a significant increase in intercellular carbon dioxide concentration (<italic>Gi</italic>), MDA, flavonoids contents, and key enzyme activities for flavonoid biosynthesis such as phenylalanine ammonia lyase (PAL). The treatment with exogenous EBR solution at the suitable concentration significantly enhanced the adaptation of <italic>A. membranaceus </italic>var.<italic> mongholicus </italic>seeds and seedlings to PEG-induced drought stress, manifested as significantly elevated germination potential, germination rate, germination index, vigor index, relative germination rate, plant height, root length, aboveground and root dry weight, <italic>Pn</italic>, <italic>Gs, Tr</italic>, chlorophyll a/b ratio, chlorophyll and flavonoids contents and key enzyme activities for flavonoid biosynthesis like PAL while lowered <italic>Ci</italic> and MDA contents. The optimal concentration of EBR solution was 0.1 μmol·L<sup>-1</sup>. Conclusion:Exogenous EBR solution at the suitable concentration ameliorates the inhibitory effect of 20% PEG stress against seed germination and seedling growth of <italic>A. membranaceus </italic>var.<italic> mongholicus</italic>, reduces the oxidative damage in leaves, and improves the stress resistance to a certain extent by up-regulating the key enzyme activities and promoting flavonoid synthesis.

9.
Article in Chinese | WPRIM | ID: wpr-905078

ABSTRACT

Objective:To establish the grade evaluation method for Codonopsis Radix slices based relative quality constants, in order to provide scientific theoretical basis for grading of Codonopsis Radix slices. Method:Through literature and market research,the main production areas of Codonopsis Radix slices were determined,and 67 batches of Ludangshen slices(52 batches) and Baitiaodang slices (15 batches) were collected. The appearance traits (average quality and average thickness of Codonopsis Radix slices) were observed and measured. According to Chinese Pharmacopoeia (2015 edition), the extract and the content of Codonopsis pilosula polysaccharide was determined by phenol-sulphoacid method. Then the relative quality constant was calculated,and the results of grade evaluation were evaluated through systematic cluster analysis and correlation analysis. Result:Relative quality constants of 67 batches of Codonopsis Radix slices were between 0.32-2.97. If these samples were divided into three grades:the first-grade relative quality constants were greater than or equal to 2.08,the second grade was greater than or equal to 0.89 but less than 2.08,while the third grade was less than 0.89. The results of systematic cluster analysis showed that 67 batches of Codonopsis Radix slices were clustered into 3 categories,and the results were basically consistent with the classification. The correlation analysis showed a positive correlation between the content of the extracts and the polysaccharide content (P<0.05). Conclusion:This method links the extrinsic characteristics to the intrinsic quality,and objectively grade Codonopsis Radix slices, so as to provide a basis for its grade standards.

10.
Chinese Journal of Biotechnology ; (12): 1968-1985, 2021.
Article in Chinese | WPRIM | ID: wpr-887775

ABSTRACT

Phytocannabinoids are bioactive terpenoids that are exclusive to Cannabis sativa L. The main pharmacologically active phytocannabinoids are Δ9-tetrahydrocannabinol and cannabidiol, both target endogenous cannabinoid receptors. Δ9-tetrahydrocannabinol and cannabidiol have extensive therapeutic potential due to their participation in many physiological and pathological processes in human body by activating the endocannabinoid system. At present, Δ9-tetrahydrocannabinol, cannabidiol and their analogues or combination preparations are used to treat epilepsy, vomiting in patients with cancer chemotherapy, spasticity in multiple sclerosis and relieve neuropathic pain and pain in patients with advanced cancer. With the further exploration of the application value of Δ9-tetrahydrocannabinol and cannabidiol as well as the increasing demand for standardization of pharmaceutical preparations, it is imminent to achieve large-scale production of Δ9-tetrahydrocannabinol and cannabidiol in the pharmaceutical industry. In this article, pharmacological research progress of phytocannabinoids in recent years, biosynthetic pathways of phytocannabinoids and the mechanism of key enzymes as well as various product development strategies of cannabinoids in pharmaceutical industry are reviewed. By exploring the potential of synthetic biology as an alternative strategy for the source of phytocannabinoids, it will provide a theoretical basis for the research and development of microbial engineering for cannabinoids synthesis, and promote the large-scale production of medicinal cannabinoids.


Subject(s)
Cannabidiol , Cannabinoids/biosynthesis , Cannabis , Humans , Receptors, Cannabinoid
11.
Article in Chinese | WPRIM | ID: wpr-846043

ABSTRACT

Objective: To establish an ultra-high performance liquid chromatography coupled with hybrid quadrupole-orbitrap mass spectrometry (UPLC-ESI-HRMS) determination method for simultaneous determination of 11 components from raw, wine-broiled, carbon-fried and steamed Rheum pumilum roots. Methods: The chromatographic separation was performed on a KinetexTM C18 column (150 mm × 4.6 mm, 2.6 μm) with a gradient elution of acetonitrile and 0.1% formic acid in water at flow rate 0.3 mL/min, the injection volume was 1 μL and column temperature was 32 ℃. The mass spectrometry was detected using ESI ion source and negative ion mode. Results: Eleven components gallic acid, epicatechin, polydatin, rhaponticin, luteolin, emodin-8-O-β-D-glucoside, aloe-emodin, rhein, emodin, chrysophanol and physcion showed a good linear relationship within a certain concentration range. The precision, repeatability and stability of the method were good for the determination of 11 components. The average recoveries varied between 91.31% and 107.08% and the RSD were between 1.73% and 3.58%. The content of gallic acid, polydatin, emodin-8-O-β-D-glucoside and emodin changed in processsed products of R. pumilum roots. The content of gallic acid and emodin increased significantly in the wine-broiled and carbon-fried process. The content of emodin-8-O-β-D-glucoside in the carbon-fried process was significantly reduced, and the content of polydatin was significantly reduced in all processed products. Conclusion: This determination method is simple, stable, accurate and reliable. It can be applied for rapid quantitative determination of 11 components in raw and processsed products of R. pumilum, which laid the foundation for further research on R. pumilum roots.

12.
Article in English | WPRIM | ID: wpr-828988

ABSTRACT

Objective@#The definite diagnosis of human and animal prion diseases depends on the examination of special pathological changes and/or detection of PrP in the brain tissues of suspected cases. Thus, developing methods to obtain PrP antibody with good specificity and sensitivity is fundamental for prion identification.@*Methods@#We prepared a PrP-specific polyclonal antibody (pAb P54) in a -knockout mouse model immunization with recombinant full-length human PrP protein residues 23-231. Thereafter, we verified that pAb in Western blot, immunohistochemistry (IHC), and immunofluorescent (IFA) assays.@*Results@#Western blot illustrated that the newly prepared pAb P54 could react with recombinant PrP protein, normal brain PrP from healthy rodents and humans, and pathological PrP in the brains of experimental rodents infected with scrapie and humans infected with different types of prion diseases. The electrophoretic patterns of brain PrP and PrP observed after their reaction with pAb P54 were nearly identical to those produced by commercial PrP monoclonal antibodies. Three glycosylated PrP molecules in the brain homogenates were clearly demonstrated in the reactions of these molecules with pAb P54. IHC assay revealed apparent PrP deposits in the GdnCl-treated brain slices of 139A-infected mice and 263K-infected hamsters. IFA tests with pAb P54 also showed clear green signals surrounding blue-stained cell nuclei.@*Conclusion@#The newly prepared pAb P54 demonstrated reliable specificity and sensitivity and, thus, may have potential applications not only in studies of prion biology but also in the diagnosis of human and experimental rodent prion diseases.


Subject(s)
Animals , Antibodies , Allergy and Immunology , Blotting, Western , Fluorescent Antibody Technique , Immunization , Immunohistochemistry , Mice , Mice, Knockout , PrPC Proteins , Allergy and Immunology , PrPSc Proteins , Allergy and Immunology , Prion Proteins , Allergy and Immunology , Recombinant Proteins , Allergy and Immunology
13.
Article in Chinese | WPRIM | ID: wpr-827816

ABSTRACT

To observe the protective effects of exogenous spermine on renal fibrosis induced by diabetic nephropathy (DN) and to explore its mechanism. Twenty-four male C57 mice were randomly divided into control group, type 1 diabetes group (TID) and spermine pretreatment group (TID+Sp, n=8 in each group). TID mice were induced by STZ (60 mg/kg), and TID+Sp mice were pretreated with spermine (5 mg/(kg·d)) for 2 weeks before STZ injection. The mice were killed at the 12th week. The renal function was determined by serum creatinine and urea nitrogen. HE, PAS and Masson staining were used to evaluate renal tissue injury and fibrosis. The expressions of matrix metalloproteinase (MMP-2, MMP-9) and collagen IV (Coll-IV) in the kidney of mice were detected by Western blot. Compared with the control group, the blood glucose (5.67±0.22 vs 28.40±0.57 mmol/L), creatinine (14.33±1.22 vs 30.67±4.73 μmol/L) and urea nitrogen (6.93±4.94 vs 22.00±1.04 mmol/L) in the T1D group were increased significantly (P<0.05), the glomerular basement membrane was thickened, the collagen was significantly increased, the expressions of MMP-2, MMP-9 and Coll-IV protein were increased (0.57±0.07 vs 1.06±0.20, 47.00±0.04 vs 1.29±0.09 and 0.42±0.16 vs 0.95±0.18,P<0.05). Exogenous spermine significantly alleviates the above-mentioned changes. Exogenous spermine pretreatment could significantly alleviate renal fibrosis in diabetic mice by regulating the balance between MMPs and collagen.

14.
Journal of Medical Postgraduates ; (12): 482-486, 2020.
Article in Chinese | WPRIM | ID: wpr-821878

ABSTRACT

ObjectiveGut microbiota plays an important role in Parkinson′s disease, but the mechanisms behind this remain unknown. This study aims to investigate the characteristics of intestinal microbiota in patients with Parkinson′s disease, and to study the changes of intestinal Prevotella_copri and their role in this disease.Methods The study was carried out in 46 patients with Parkinson′s disease and their spouses. The spouse has been living with the patient for a long time, not suffering from any disease. Fecal samples from all subjects were collected using sterile containers. The bacterial DNA was extracted on ice following the Kit protocol. We used the BGISEQ-500 high-throughput sequencing platform to conduct metagenomic shotgun sequencing, to explore the changes of patients′ intestinal microbiota through bioinformatics, and to analyze the function and role of differential microorganisms in disease.ResultsCompared to healthy spouse, the gut microbiota of patients with Parkinson′s disease was significantly changed, which was characterized by decreased Prevotellaceae and Prevotella_copri, but by significantly elevated Bacteroides_stercoris and Escherichia_coli. Prevotella_copri was decreased with age increasing. The correlation analysis showed a significantly negative correlation between the abundance of Prevotella_copri and age, H-Ystage, UPDR total score, and UPDRS Ⅲ score. Results of the random forest model indicated five items including Prevotella_copri had good predictive value for the disease. The functional analysis stated pathways associated with super-pathway of thiamin diphosphate biosynthesis, 4-aminobutanoate degradation. The glucose-1-phosphate degradation and methyl phosphonate degradation significantly increased in patients, while pathways associated with aromatic amino acid biosynthesis, chorismate biosynthesis, thiamin formation, and pyrimidine deoxyribonucleosides salvage significantly decreased. Pathways of Prevotella_copri were mainly concentrated in UMP biosynthesis, S-adenosyl-L-methionine cycle, and guanosine ribonucleotides de novo biosynthesis.ConclusionStructural composition and metabolic functions of gut microbiota were significantly changed in patients with Parkinson′s disease. Prevotella_copri plays an important role in the occurrence and progression of the disease and can be used as a potential biomarker for Parkinson′s disease.

15.
Acta Pharmaceutica Sinica ; (12): 652-668, 2020.
Article in Chinese | WPRIM | ID: wpr-820862

ABSTRACT

Hepatitis C virus (HCV) infection is one of the global public health issues. Approximately, 130-150 million individuals are chronically infected worldwide and a quarter of these patients are at increased risk of developing liver cirrhosis, hepatocellular carcinoma and even liver failure. A complete eradication of the virus is one of the most important treatment goals for antiviral research. From the point of view of medicinal chemistry, we summarize and discuss current endeavors towards the discovery and development of novel inhibitors with various scaffolds or distinct mechanisms of action.

16.
Article in Chinese | WPRIM | ID: wpr-870721

ABSTRACT

Epidemiologic, clinical and imaging data were collected from 14 children with confirmed coronavirus disease 2019 (COVID-19) admitted in Beijing Ditan Hospital from January 27, 2020 to February 12, 2020. There were 6 boys and 8 girls with a median age of 3.5 years (6 months-9.4 years). Four patients had a history of travel to Wuhan City or Hubei Province and 2 patients had contacted with people from Wuhan; 13 patients were familial cluster of infection. The incubation period was 4 to 16 days. The clinical manifestations were fever in 8 cases, cough in 5 cases, diarrhea in 1 case; and 2 cases were asymptomatic. Four patients had abnormal peripheral blood routine, including 1 had lymphocytosis, 3 had lymphocytopenia; 3 patients had a slightly elevated CRP, and 3 patients had hepatic dysfunction. Thirteen patients underwent chest CT; and 1 case showed bilateral lung glass exudation, 1 case showed multiple patchy high density shadows of bilateral lung. One patient underwent chest X-ray examination, which was showed no abnormal findings. The pediatric patients with COVID-19 in this series generally have a traceable epidemiological history. The clinical manifestations are fever, cough and diarrhea. Peripheral white blood cell counts were most normal. Chest CT reveals less severe changes than those in adults, most child patients show no manifestation of pneumonia.

17.
Article in Chinese | WPRIM | ID: wpr-870178

ABSTRACT

To analyze the predictive value of serum intact parathyroid hormone (iPTH) and alkaline phosphatase (ALP) on all-cause and cardiovascular mortality in maintaining hemodialysis (MHD) patients. A total of 224 MHD patients were prospectively investigated and followed up for 2 years. Serum iPTH levels were not associated with all-cause death and cardiovascular death ( HR=1.001, 95% CI 1.000-1.004, P=0.048) . The level of serum ALP was associated with cardiovascular death ( HR=1.002, 95% CI 1.000-1.004, P=0.033) . ALP≥106 IU/L was an independent risk factor for cardiovascular death in MHD patients ( P<0.05) . The joint variable was correlated with mortality in MHD patients ( HR=1.002, 95% CI 1.000~1.004, P=0.033) , that equal or over 37.28 was an independent risk factor for mortality ( P<0.05).

18.
Article in Chinese | WPRIM | ID: wpr-869187

ABSTRACT

Objective:To further understand the etiological distribution of fever of unknown origin (FUO) in patients underwent 18F-fluorodeoxyglucose (FDG) PET/CT imaging, and to explore the significance of 18F-FDG PET/CT in the diagnosis of different types of diseases in FUO patients. Methods:From January 2013 to August 2019, the clinical and PET/CT image data of 466 FUO patients (194 males, 272 females, age: 3-91(52.7±20.9) years) in Peking University People′s Hospital were retrospectively analyzed. The etiological distribution of FUO patients was analyzed according to the final clinical diagnosis. PET/CT imaging manifestations were analyzed for different types of diseases in FUO patients. The role of 18F-FDG PET/CT in differential diagnosis for FUO was evaluated through clinical questionnaire. Data were analyzed by using χ2 test. Results:The common disease types in FUO patients were rheumatic and immune disease (48.7%, 227/466), infection (28.5%, 133/466) and malignant tumor (11.2%, 52/466). For PET/CT imaging, 95.5% (445/466) of the patients were positive, of which 313 (70.3%, 313/445) were found to have focal lesions, and the other 132 (29.7%, 132/445) showed only nonspecific abnormal uptake. Lesions in different types of diseases were varied in the location, morphological changes as well as FDG uptake. The results of the questionnaire showed that PET/CT imaging could benefit 95.9% (447/466) of the patients in the FUO diagnosis and treatment. PET/CT reached direct etiological diagnosis of malignant tumors more frequently than other types of diseases ( χ2 values: 14.408-25.466, all P<0.001). PET/CT helped or directly reached the etiological diagnosis of rheumatologic diseases more frequently than infection and unknown cause group( χ2 values: 7.922, 9.647, both P<0.05). Conclusion:18F-FDG PET/CT imaging has high clinical value in the diagnosis of FUO etiology and can provide multilevel diagnostic information.

19.
Article in Chinese | WPRIM | ID: wpr-869184

ABSTRACT

Objective:To explore the clinical value of 18F-fluorodeoxyglucose (FDG) PET/CT in panniculitis presenting as fever of unknown origin (FUO). Methods:Patients with FUO ( n=503) who underwent 18F-FDG PET/CT examination in Peking University People′s Hospital between January 2013 and December 2019 were retrospectively analyzed, and those with final diagnosis of panniculitis were enrolled. The clinical and imaging data of patients with panniculitis were evaluated. Results:Five of the 503(0.99%) patients with FUO who underwent PET/CT imaging were diagnosed with panniculitis. Their age ranged from 41 to 76 years, and 3 of them were females. The main clinical manifestation was fever. Laboratory tests showed an increase in erythrocyte sedimentation rate and C-reactive protein. The 18F-FDG PET/CT imaging found localized FDG uptake foci in multiple adipose tissue, with maximum standardized uptake value (SUV max) ranging from 0.8 to 5.0. Those lesions located in subcutaneous adipose tissue ( n=3), mesenteric adipose tissue ( n=3) and other adipose tissue in abdominal cavity and retro peritoneum ( n=1). Diffusely increased FDG uptake of the spleen was found in 4 patients, diffusely increased FDG uptake of bone marrow was found in 3 patients, and multiple reactive hyperplasia lymph nodes was found in 2 patients. In addition, in 2 patients with the scanning field extended to the mid-thigh, high FDG uptake of the polyarticular synovium was also seen. Conclusions:Panniculitis has some characteristics on 18F-FDG PET/CT imaging. 18F-FDG PET/CT is helpful for etiological diagnosis of FUO caused by panniculitis.

20.
Article in Chinese | WPRIM | ID: wpr-863205

ABSTRACT

Objective:To evaluate the biosafety of medical injectable carboxymethyl glycosaminoglycan gel.Methods:Ames test, chromosome aberration test in vitro and gene mutation test in vitro were used to detect the genotoxicity of the medical carboxymethyl glycosaminoglycan gel. The gel saline extract (50 ml/kg) was injected slowly through the marginal vein of the ear into Japanese big-eared rabbits. The body temperature was measured and the temperature rise was calculated. The gel saline extract (50 ml/kg) and normal saline (control) were injected intraperitoneally and intravenously into the Kunming mice, respectively. The toxicity response in mice was observed after injection, and bodyweight change was valued. The gel saline extract, normal saline and distilled water were added into the rabbit anti-clotting, to detect the rate of hemolysis.Results:Under active and inactive conditions, the number of spontaneous revertants of the 4 strains of gel saline extract group and gel DMSO extract group did not reach 2 times of that of the corresponding negative control group. The rate of chromosome aberration of the three dose groups were 0. There was no significant increase in the large colony mutation frequency, small colony mutation frequency and total mutation frequency in three dose groups (all P>0.05). After injection of gel saline extract for 24, 48 and 72 h, no toxic reaction was found in each group of mice. With the extension of time after injection, the body weight of mice in the sample group and the control group increased, but the difference was not statistically significant ( P>0.05). After injection of gel saline extract, the temperature rise of 3 Japanese big-eared rabbits were 0.0, 0.3 and 0.2 ℃ respectively. The results of hemolysis test showed that the hemolysis rate of the polycarboxymethyl glucosamine gel was 0.1%. Conclusions:No genetic toxicity changes were found in carboxymethyl glycosaminoglycan to induce gene mutation or chromosome damage in bacteria and cells, and no pyrogenicity, acute systemic toxicity and hemolysis were observed. These results indicate that thecarboxymethyl glycosaminoglycan gel has good biosafety.

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