LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 14

Search options

  1. Article ; Online: Case report: Overlapping anti-AMPAR encephalitis with anti-IgLON5 disease post herpes simplex virus encephalitis.

    Sun, Shihui / Ren, Jiafeng / Zhong, Zhao / Ma, Xuxia / Shang, Danqing / Su, Changjun / Zhao, Xianchao

    Frontiers in immunology

    2024  Volume 14, Page(s) 1329540

    Abstract: Autoimmune encephalitis (AE) is the result of an autoimmune process that occurs as a rapidly advancing encephalopathy. Autoimmune encephalitis was commonly linked to herpes simplex virus 1 (HSV-1) as the most frequently identified virus. The main areas ... ...

    Abstract Autoimmune encephalitis (AE) is the result of an autoimmune process that occurs as a rapidly advancing encephalopathy. Autoimmune encephalitis was commonly linked to herpes simplex virus 1 (HSV-1) as the most frequently identified virus. The main areas affected by this invasion are the temporal lobe, frontal lobe, and limbic system. Limbic encephalitis is a highly uncommon occurrence involving anti-alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR) encephalitis and anti-IgLON family member 5 (IgLON5) disease, both belonging to the rare category. As far as we know, this is the first report showing that a patient diagnosed with AMPAR encephalitis overlapped with anti-IgLON5 disease post herpes simplex virus encephalitis (HSE), which helps to broaden the range of this uncommon autoimmune disease. We recommend autoantibody testing in all patients with HSE, particularly those involving neurological relapses or progression.
    MeSH term(s) Humans ; Brain Diseases ; Cell Adhesion Molecules, Neuronal ; Encephalitis, Herpes Simplex/drug therapy ; Hashimoto Disease ; Herpesvirus 1, Human
    Chemical Substances Cell Adhesion Molecules, Neuronal ; IgLON5 protein, human
    Language English
    Publishing date 2024-01-08
    Publishing country Switzerland
    Document type Case Reports ; Research Support, Non-U.S. Gov't
    ZDB-ID 2606827-8
    ISSN 1664-3224 ; 1664-3224
    ISSN (online) 1664-3224
    ISSN 1664-3224
    DOI 10.3389/fimmu.2023.1329540
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: How to achieve adequate quenching for DBP analysis in drinking water?

    Ren, Jiafeng / Tang, Mengmeng / Wang, Leyi / Chu, Wenhai / Shi, Wei / Zhou, Qing / Pan, Yang

    Water research

    2024  Volume 253, Page(s) 121264

    Abstract: Quenching is an important step to terminate disinfection during preparation of disinfected water samples for the analysis of disinfection byproducts (DBPs). However, an incomplete quenching might result in continued reactions of residual chlorine, ... ...

    Abstract Quenching is an important step to terminate disinfection during preparation of disinfected water samples for the analysis of disinfection byproducts (DBPs). However, an incomplete quenching might result in continued reactions of residual chlorine, whereas an excessive quenching might decompose target DBPs. Therefore, an adequate quenching to achieve simultaneous disinfection termination and DBP preservation is of particular importance. In this study, the two-stage reaction kinetics of chlorine and three commonly used quenching agents (i.e., ascorbic acid, sodium thiosulfate, and sodium sulfite) were determined. Stopping quenching during the first stage prevented interactions of residual chlorine with natural organic matter. Complete quenching was achieved by minimizing the quenching time for ascorbic acid and sodium sulfite, while limiting the quenching time to less than 3 min for sodium thiosulfate. At the optimized quenching times, the molar ratios (MRs) of quenching agent to chlorine were 1.05, 1.10, and 0.75 for ascorbic acid, sodium sulfite, and sodium thiosulfate, respectively. The destructive effects of the three quenching agents on total organic halogen (TOX) followed the rank order of ascorbic acid (33.7-64.8 %) < sodium sulfite (41.6-72.8 %) < sodium thiosulfate (43.3-73.2 %), and the destructive effects on aliphatic DBPs also followed the rank order of ascorbic acid (29.5-44.5 %) < sodium sulfite (34.9-51.9 %) < sodium thiosulfate (46.9-53.2 %). For total organic chlorine (TOCl) and aliphatic DBPs, the quenching behavior itself had more significant destructive effect than the quenching agent type/dose and quenching time, but for total organic bromine (TOBr), the destructive effect caused by quenching agent type/dose and quenching time was more significant. High-dose, long-duration quenching enhanced the reduction of TOX, but had little effect on aliphatic DBPs. Additionally, the three quenching agents reduced the levels of halophenols (except for tribromophenol), while maintained or increased the levels of tribromophenol, halobenzoic/salicylic acids, and halobenzaldehydes/salicylaldehydes. To achieve adequate quenching for overall DBP analysis in chlorinated water samples, it is recommended to use ascorbic acid at a quenching agent-to-chlorine MR of 1.0 for a quenching time of < 0.5 h.
    MeSH term(s) Drinking Water/analysis ; Chlorine/analysis ; Disinfectants/analysis ; Halogens/analysis ; Disinfection ; Chlorides ; Ascorbic Acid/analysis ; Water Purification ; Water Pollutants, Chemical/analysis ; Halogenation ; Sulfites ; Thiosulfates
    Chemical Substances Drinking Water ; sodium sulfite (VTK01UQK3G) ; sodium thiosulfate (HX1032V43M) ; Chlorine (4R7X1O2820) ; Disinfectants ; Halogens ; Chlorides ; Ascorbic Acid (PQ6CK8PD0R) ; Water Pollutants, Chemical ; Sulfites ; Thiosulfates
    Language English
    Publishing date 2024-02-05
    Publishing country England
    Document type Journal Article
    ZDB-ID 202613-2
    ISSN 1879-2448 ; 0043-1354
    ISSN (online) 1879-2448
    ISSN 0043-1354
    DOI 10.1016/j.watres.2024.121264
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: ADHD in narcolepsy: A closer look at prevalence and ties.

    Ren, Jiafeng / Zhao, Xianchao / Su, Changjun / Li, Xiao / Zhou, Junying

    Neuroscience and biobehavioral reviews

    2023  Volume 156, Page(s) 105471

    Abstract: The reported prevalence of attention deficit hyperactivity disorder (ADHD) in narcolepsy varies considerably, while the associated factors remain inadequately established. A systematic search of studies published in PubMed, EMBASE, and the Cochrane ... ...

    Abstract The reported prevalence of attention deficit hyperactivity disorder (ADHD) in narcolepsy varies considerably, while the associated factors remain inadequately established. A systematic search of studies published in PubMed, EMBASE, and the Cochrane Library was performed from inception to March 2023. Ten studies with 839 patients with narcolepsy were included in the study. Utilizing a random effects model, the pooled prevalence of ADHD in narcolepsy was 25% (95% CI, 14-38%). Notably, patients with narcolepsy type 2 showed a significantly higher prevalence of ADHD than that of narcolepsy type 1 (46% vs. 20%, p = 0.045). Furthermore, the rate of ADHD was notably elevated in narcolepsy compared with the healthy controls (odds ratio 9.59, 95% CI, 4.06-22.63, p < 0.001). Several factors such as excessive daytime sleepiness (EDS), fatigue, insomnia severity, and the quality of life were significantly associated with ADHD in narcolepsy (all ps < 0.05). These findings highlight the importance of monitoring and managing ADHD in narcolepsy, and provide a clue to help reducing ADHD by intervening in these associated factors.
    MeSH term(s) Humans ; Attention Deficit Disorder with Hyperactivity/complications ; Attention Deficit Disorder with Hyperactivity/epidemiology ; Prevalence ; Quality of Life ; Narcolepsy/complications ; Narcolepsy/epidemiology ; Fatigue
    Language English
    Publishing date 2023-11-28
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 282464-4
    ISSN 1873-7528 ; 0149-7634
    ISSN (online) 1873-7528
    ISSN 0149-7634
    DOI 10.1016/j.neubiorev.2023.105471
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Disrupted topological properties of structural brain networks present a glutamatergic neuropathophysiology in people with narcolepsy.

    Chen, Guoyan / Wang, Wen / Wu, Haoyang / Zhao, Xiangchao / Kang, Xiaopeng / Ren, Jiafeng / Zhang, Jun / He, Jiaxiu / Sun, Shihui / Zhong, Zhao / Shang, Danqing / Fan, Mengmeng / Cheng, Jinxiang / Zhang, Dan / Su, Changjun / Lin, Jiaji

    Sleep

    2024  

    Abstract: Study objectives: Growing evidences have documented various abnormalities of the white matter bundles in people with narcolepsy. We sought to evaluate topological properties of brain structural networks, and their association with symptoms and ... ...

    Abstract Study objectives: Growing evidences have documented various abnormalities of the white matter bundles in people with narcolepsy. We sought to evaluate topological properties of brain structural networks, and their association with symptoms and neuropathophysiological features in people with narcolepsy.
    Methods: Diffusion tensor imaging (DTI) was conducted for people with narcolepsy (n = 30) and matched healthy controls as well as symptoms assessment. Structural connectivity for each participant was generated to analyze global and regional topological properties and their correlations with narcoleptic features. Further human brain transcriptome was extracted and spatially registered for connectivity vulnerability. Genetic functional enrichment analysis was performed and further clarified using in vivo emission computed tomography data.
    Results: A wide and dramatic decrease in structural connectivities was observed in people with narcolepsy, with descending network degree and global efficiency. These metrics were not only correlated with sleep latency and awakening features, but also reflected alterations of sleep macrostructure in people with narcolepsy. Network-based statistics identified a small hyperenhanced subnetwork of cingulate gyrus that was closely related to rapid eye movement sleep behavior disorder (RBD) in narcolepsy. Further imaging genetics analysis suggested glutamatergic signatures were responsible for the preferential vulnerability of connectivity alterations in people with narcolepsy, while additional PET/SPECT data verified that structural alteration was significantly correlated with metabotropic glutamate receptor 5 (mGlutR5) and N-methyl-D-aspartate receptor (NMDA).
    Conclusions: People with narcolepsy endured a remarkable decrease in the structural architecture, which was not only be closely related to narcolepsy symptoms but also glutamatergic signatures.
    Language English
    Publishing date 2024-01-04
    Publishing country United States
    Document type Journal Article
    ZDB-ID 424441-2
    ISSN 1550-9109 ; 0161-8105
    ISSN (online) 1550-9109
    ISSN 0161-8105
    DOI 10.1093/sleep/zsae002
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article: Characteristics of Objective Sleep and Its Related Risk Factors Among Parkinson's Disease Patients With and Without Restless Legs Syndrome.

    Sun, Shuyu / Zhao, Xianchao / Ren, Jiafeng / Cheng, Jinxiang / Zhou, Junying / Su, Changjun

    Frontiers in neurology

    2021  Volume 12, Page(s) 644385

    Abstract: Objective: ...

    Abstract Objective:
    Language English
    Publishing date 2021-06-11
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2564214-5
    ISSN 1664-2295
    ISSN 1664-2295
    DOI 10.3389/fneur.2021.644385
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Management of narcolepsy during COVID-19: a challenge or an opportunity?

    Wu, Min / Ren, Jiafeng / Li, Shirley Xin / Xue, Pei / Su, Changjun / Zhou, Junying

    Sleep

    2021  Volume 44, Issue 2

    MeSH term(s) Adolescent ; Adult ; COVID-19/epidemiology ; Child ; Female ; Humans ; Male ; Middle Aged ; Narcolepsy/epidemiology ; Narcolepsy/therapy ; Retrospective Studies ; Young Adult
    Language English
    Publishing date 2021-02-12
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 424441-2
    ISSN 1550-9109 ; 0161-8105
    ISSN (online) 1550-9109
    ISSN 0161-8105
    DOI 10.1093/sleep/zsaa273
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: A nuclease-mimetic platinum nanozyme induces concurrent DNA platination and oxidative cleavage to overcome cancer drug resistance.

    Li, Fangyuan / Sun, Heng / Ren, Jiafeng / Zhang, Bo / Hu, Xi / Fang, Chunyan / Lee, Jiyoung / Gu, Hongzhou / Ling, Daishun

    Nature communications

    2022  Volume 13, Issue 1, Page(s) 7361

    Abstract: Platinum (Pt) resistance in cancer almost inevitably occurs during clinical Pt-based chemotherapy. The spontaneous nucleotide-excision repair of cancer cells is a representative process that leads to Pt resistance, which involves the local DNA bending to ...

    Abstract Platinum (Pt) resistance in cancer almost inevitably occurs during clinical Pt-based chemotherapy. The spontaneous nucleotide-excision repair of cancer cells is a representative process that leads to Pt resistance, which involves the local DNA bending to facilitate the recruitment of nucleotide-excision repair proteins and subsequent elimination of Pt-DNA adducts. By exploiting the structural vulnerability of this process, we herein report a nuclease-mimetic Pt nanozyme that can target cancer cell nuclei and induce concurrent DNA platination and oxidative cleavage to overcome Pt drug resistance. We show that the Pt nanozyme, unlike cisplatin and conventional Pt nanoparticles, specifically induces the nanozyme-catalyzed cleavage of the formed Pt-DNA adducts by generating in situ reactive oxygen species, which impairs the damage recognition factors-induced DNA bending prerequisite for nucleotide-excision repair. The recruitment of downstream effectors of nucleotide-excision repair to DNA lesion sites, including xeroderma pigmentosum groups A and F, is disrupted by the Pt nanozyme in cisplatin-resistant cancer cells, allowing excessive accumulation of the Pt-DNA adducts for highly efficient cancer therapy. Our study highlights the potential benefits of applying enzymatic activities to the use of the Pt nanomedicines, providing a paradigm shift in DNA damaging chemotherapy.
    MeSH term(s) Platinum/pharmacology ; DNA Adducts ; Cisplatin/pharmacology ; Endonucleases ; Drug Resistance, Neoplasm ; DNA ; Oxidative Stress ; Nucleotides ; Neoplasms/drug therapy
    Chemical Substances Platinum (49DFR088MY) ; DNA Adducts ; Cisplatin (Q20Q21Q62J) ; Endonucleases (EC 3.1.-) ; DNA (9007-49-2) ; Nucleotides
    Language English
    Publishing date 2022-11-30
    Publishing country England
    Document type Journal Article
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-022-35022-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Rapid eye movement sleep and slow wave sleep rebounded and related factors during positive airway pressure therapy.

    Cheng, Jin-Xiang / Ren, Jiafeng / Qiu, Jian / Jiang, Yingcong / Zhao, Xianchao / Sun, Shuyu / Su, Changjun

    Scientific reports

    2021  Volume 11, Issue 1, Page(s) 7599

    Abstract: This study aimed to investigate the clinical characteristics and predictors of increased rapid eye movement (REM) sleep or slow wave sleep (SWS) in patients with obstructive sleep apnea (OSA) following positive airway pressure (PAP) therapy. The study ... ...

    Abstract This study aimed to investigate the clinical characteristics and predictors of increased rapid eye movement (REM) sleep or slow wave sleep (SWS) in patients with obstructive sleep apnea (OSA) following positive airway pressure (PAP) therapy. The study retrospectively analyzed data from patients with OSA who underwent both diagnostic polysomnography (PSG) and pressure titration PSG at the Tangdu Hospital Sleep Medicine Center from 2011-2016. Paired diagnostic PSG and pressure titration studies from 501 patients were included. REM rebound was predicted by a higher oxygen desaturation index, lower REM proportion, higher arousal index, lower mean pulse oxygen saturation (SpO
    MeSH term(s) Adult ; Arousal/physiology ; China/epidemiology ; Continuous Positive Airway Pressure/methods ; Female ; Humans ; Male ; Middle Aged ; Oximetry/methods ; Oxygen/metabolism ; Polysomnography/methods ; Positive-Pressure Respiration/adverse effects ; Positive-Pressure Respiration/methods ; Prognosis ; Respiratory System/physiopathology ; Retrospective Studies ; Sleep/physiology ; Sleep Apnea, Obstructive/physiopathology ; Sleep Initiation and Maintenance Disorders/physiopathology ; Sleep, REM/physiology ; Sleep, Slow-Wave/physiology ; Wakefulness/physiology
    Chemical Substances Oxygen (S88TT14065)
    Language English
    Publishing date 2021-04-07
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-021-87149-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Effects of transcranial direct current stimulation on performance and recovery sleep during acute sleep deprivation: a pilot study.

    Cheng, Jin-Xiang / Zhao, Xianchao / Qiu, Jian / Jiang, Yingcong / Ren, Jiafeng / Sun, Shuyu / Wang, Rong / Su, Changjun

    Sleep medicine

    2021  Volume 79, Page(s) 124–133

    Abstract: Background: Previous studies claimed that transcranial direct current stimulation (tDCS) over the left dorsolateral prefrontal cortex (DLPFC) improves cognition in neuropsychiatric patients with cognitive impairment, schizophrenia, organic hypersomnia, ... ...

    Abstract Background: Previous studies claimed that transcranial direct current stimulation (tDCS) over the left dorsolateral prefrontal cortex (DLPFC) improves cognition in neuropsychiatric patients with cognitive impairment, schizophrenia, organic hypersomnia, etc, but few studies evaluated the effects of tDCS on cognitive improvement following sleep deprivation. The objective of this study was to determine whether tDCS (anode on the left DLPFC and cathode on the right DLPFC with a 2-mA current for 30 min) improves cognition following sleep deprivation.
    Methods: Seven participants received active tDCS and eight participants received sham tDCS when their cognition declined during at least 30 h of sleep deprivation. All participants completed the psychomotor vigilance task, Trail Making Tests A and B, digit cancellation test, Stroop color word test, the Brief Visuospatial Memory Test-Revised and a procedural game every 2 h during the sleep deprivation and after recovery sleep.
    Results: Compared to the sham stimulation, active tDCS (anode on the left DLPFC and cathode on the right DLPFC at a 2-mA current for 30 min) had beneficial effects on attention, memory, executive function, processing speed, and the ability to inhibit cognitive interference, and improved in subjective drowsiness and fatigue following sleep deprivation. The lasting effect of a single tDCS on cognition during sleep deprivation was greater than 2 h. In all participants, tDCS did not disturb recovery sleep, and cognitive performance recovered to the baseline levels after recovery sleep.
    Conclusions: The study results indicate that tDCS can improve cognition following sleep deprivation and does not disturb recovery sleep or cognitive performance after recovery sleep. The possible pathophysiological mechanisms might be related to the modulation of the corticothalamic pathway. We believe that tDCS can be applied in the treatment of sleep disorders involving sleepiness.
    Trial registration number: ChiCTR2000029420.
    Date of registration: 2020-1-31.
    MeSH term(s) Cognition ; Double-Blind Method ; Humans ; Pilot Projects ; Prefrontal Cortex ; Sleep Deprivation/therapy ; Transcranial Direct Current Stimulation
    Language English
    Publishing date 2021-01-13
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2012041-2
    ISSN 1878-5506 ; 1389-9457
    ISSN (online) 1878-5506
    ISSN 1389-9457
    DOI 10.1016/j.sleep.2021.01.014
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Association between leg motor restlessness and depression among Chinese males living at high-altitude: the mediating role of insomnia.

    Sun, Shuyu / Qiu, Jian / Ren, Jiafeng / Zhao, Xianchao / Jiang, Yingcong / Wang, Rong / Wu, Chengji / Cheng, Jinxiang / Su, Changjun

    Sleep & breathing = Schlaf & Atmung

    2020  Volume 25, Issue 2, Page(s) 979–987

    Abstract: Objective: Previous research has documented an association between insomnia and depression among patients with restless legs syndrome (RLS)/Willis-Ekbom disease. Given that leg motor restlessness (LMR) is closely related to RLS, the purpose of this ... ...

    Abstract Objective: Previous research has documented an association between insomnia and depression among patients with restless legs syndrome (RLS)/Willis-Ekbom disease. Given that leg motor restlessness (LMR) is closely related to RLS, the purpose of this study was to investigate the prevalence of insomnia and depression among individuals with LMR. In addition, we examined the associations among LMR, insomnia, and depression in a sample of young Chinese men living in high-altitude areas.
    Methods: Chinese military personnel working on the Qinghai Tibet Plateau (Lhasa, an altitude of 3600 m) were recruited in 2019 to complete a series of questionnaires. Participants having the urge to move their legs but not meeting the diagnostic criteria for RLS were classified as having LMR. Hierarchical linear regressions and mediational analyses using the SPSS PROCESS macro in SPSS were conducted to examine the associations among LMR, insomnia, and depression.
    Results: Of 196 participants, 36 (18%) had LMR. Only 1 participant was diagnosed with RLS. The proportions of participants suffering from insomnia who had LMR and did not have LMR were 44% and 22%, respectively. For depression, the proportions were 47% and 28%, respectively. Results of the hierarchical linear regressions showed that both LMR and depression were associated with increased insomnia symptoms. In addition, results from the mediational analyses indicated that the indirect effect of LMR on depression was significant and accounted for 52% of the total effect.
    Conclusions: Participants with LMR had a higher prevalence of insomnia and depression compared with those without LMR. In addition, LMR was correlated with depression, and insomnia played a significant role in this co-occurrence.
    MeSH term(s) Adult ; Altitude ; China/epidemiology ; Depression/epidemiology ; Humans ; Male ; Residence Characteristics/statistics & numerical data ; Restless Legs Syndrome/epidemiology ; Sleep Initiation and Maintenance Disorders/epidemiology ; Young Adult
    Language English
    Publishing date 2020-08-08
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1500381-4
    ISSN 1522-1709 ; 1520-9512
    ISSN (online) 1522-1709
    ISSN 1520-9512
    DOI 10.1007/s11325-020-02156-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top