156 results on '"Liu RC"'
Search Results
2. The transmissibility estimation of influenza with early stage data of small-scale outbreaks in Changsha, China, 2005–2013
- Author
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Chen Tm, Szot A, Zhou Ss, Jiayong Zhao, Liu Rc, Songhua Chen, and Chen Qp
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Mainland China ,Adult ,Male ,China ,Adolescent ,Epidemiology ,030231 tropical medicine ,Population ,Basic Reproduction Number ,Standard deviation ,Disease Outbreaks ,03 medical and health sciences ,Young Adult ,0302 clinical medicine ,Influenza, Human ,Gamma distribution ,Disease Transmission, Infectious ,Humans ,030212 general & internal medicine ,education ,Child ,Disease burden ,Aged ,education.field_of_study ,Outbreak ,reproduction number ,Middle Aged ,Models, Theoretical ,Virology ,Original Papers ,Influenza ,Infectious Diseases ,Geography ,small-scale outbreak ,Female ,Epidemic model ,Basic reproduction number ,mathematical model ,Demography - Abstract
SUMMARYHundreds of small-scale influenza outbreaks in schools are reported in mainland China every year, leading to a heavy disease burden which seriously impacts the operation of affected schools. Knowing the transmissibility of each outbreak in the early stage has become a major concern for public health policy-makers and primary healthcare providers. In this study, we collected all the small-scale outbreaks in Changsha (a large city in south central China with ~7·04 million population) from January 2005 to December 2013. Four simple and popularly used models were employed to calculate the reproduction number (R) of these outbreaks. Given that the duration of a generation interval Tc = 2·7 and the standard deviation (s.d.)σ = 1·1, the mean R estimated by an epidemic model, normal distribution and delta distribution were 2·51 (s.d. = 0·73), 4·11 (s.d. = 2·20) and 5·88 (s.d. = 5·00), respectively. When Tc = 2·9 and σ = 1·4, the mean R estimated by the three models were 2·62 (s.d. = 0·78), 4·72 (s.d. = 2·82) and 6·86 (s.d. = 6·34), respectively. The mean R estimated by gamma distribution was 4·32 (s.d. = 2·47). We found that the values of R in small-scale outbreaks in schools were higher than in large-scale outbreaks in a neighbourhood, city or province. Normal distribution, delta distribution, and gamma distribution models seem to more easily overestimate the R of influenza outbreaks compared to the epidemic model.
- Published
- 2016
3. Prevalence and risk factors for chronic kidney disease in patients with coronary artery disease.
- Author
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Bao YS, Na SP, Jia XB, Liu RC, Wang MA, Yu CY, Mu SH, and Xie RJ
- Abstract
Abstract Objectives: Chronic renal disease (CKD) is recognized as a worldwide public health problem. Traditional risk factors for CKD are also present in coronary artery disease (CAD). The purpose of this study is to examine the prevalence and characteristics of risk factors for CKD in the population with CAD. Methods: Renal function was evaluated in 527 patients with CAD in order to assess characteristics of the incidence, risk factors for CKD in the population with CAD. In the present study in order to concentrate on evaluation for eGFR of the patients with CAD proteinuria is not included in the definition of CKD. Results: Univariate analysis demonstrated that the major risk factors associated with CKD in the patients with CAD were age (P <= 0.001), smoking (P = 0.016), diabetes mellitus (P = 0.021), hypertension (P <= 0.001), and systolic blood pressure (P = 0.004). The percentages of patients with both hypertension and diabetes mellitus were significantly greater in the CKD3-4 group (P < 0.001). The results of multivariable analysis showed that hypertension (OR 1.925, 95% CI 1.196-3.098, P = 0.007), diabetes mellitus (OR 1.744, 95% CI 1.044-2.914, P = 0.034) and serum uric acid (OR 1.008, 95% CI 1.006-1.010, P <= 0.001) were independent risk factors for reduced eGFR. Conclusions: CKD is common and has a high prevalence in the population with CAD. Several risk factors are known to simultaneously affect heart and kidney. The patients with CAD may be considered as a high-risk population for CKD. [ABSTRACT FROM AUTHOR]
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- 2012
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4. Erosion of gastric electrical stimulator electrodes: evaluation, management, and laparoscopic techniques.
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Liu RC, Sabnis AA, and Chang B
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- 2007
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5. Human immunodeficiency virus disease-related neutropenia and the risk of hospitalization for bacterial infection.
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Jacobson MA, Liu RC, Davies D, and Cohen PT
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- 1997
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6. Discovery of glycosidated glycyrrhetinic acid derivatives: Natural product-based soluble epoxide hydrolase inhibitors.
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Liu Q, Wang YX, Ge ZH, Zhu MZ, Ding J, Wang H, Liu SM, Liu RC, Li C, Yu MJ, Feng Y, Zhu XH, and Liang JH
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- Structure-Activity Relationship, Animals, Mice, Molecular Structure, Humans, Solubility, Drug Discovery, Dose-Response Relationship, Drug, Male, Glycosides chemistry, Glycosides pharmacology, Glycosides chemical synthesis, Anti-Inflammatory Agents pharmacology, Anti-Inflammatory Agents chemistry, Anti-Inflammatory Agents chemical synthesis, Edema drug therapy, Edema chemically induced, Epoxide Hydrolases antagonists & inhibitors, Epoxide Hydrolases metabolism, Enzyme Inhibitors pharmacology, Enzyme Inhibitors chemistry, Enzyme Inhibitors chemical synthesis, Glycyrrhetinic Acid pharmacology, Glycyrrhetinic Acid chemistry, Glycyrrhetinic Acid chemical synthesis, Biological Products chemistry, Biological Products pharmacology, Biological Products chemical synthesis
- Abstract
There are few reports on soluble epoxide hydrolase (sEH) structure-activity relationship studies using natural product-based scaffolds. In this study, we discovered that C-30 urea derivatives of glycyrrhetinic acid such as 33, rather than C-20/C-3 urea derivatives, possess in vitro sEH inhibitory capabilities. Furthermore, we explored the impact of stereoconfigurations at C-3 and C-18 positions, and glycosidic bonds at the 3-OH on the compound's activity. Consequently, a glycoside of 33, specifically 49Cα containing alpha-oriented mannose, exhibited promising in vivo efficacy in alleviating carrageenan-induced paw edema and acetic acid-induced writhing. Meanwhile, 49Cα demonstrated potential in mitigating acute pancreatitis by modulating the ratios of anti-inflammatory epoxyeicosatrienoic acids (EETs) to pro-inflammatory dihydroxyeicosatrienoic acids (DHETs). The co-crystal structure of sEH in complex with 49Cα revealed that the N-tetrahydropyranylmethylene urea hydrogen bonded with the residues within the sEH tunnel, contrasting with the mannose component that extended beyond the tunnel's confines. Our findings highlight 49Cα (coded LQ-38) as a promising candidate for anti-inflammatory and analgesic effects, and pave the way for the future rational design of triterpenoid-based sEH inhibitors., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Jian-Hua Liang reports financial support was provided by STI2030-Major Projects. Jian-Hua Liang reports financial support was provided by China's National Key Research and Development Program. Jian-hua Liang reports financial support was provided by China's National Natural Science Foundation. Jian-Hua Liang has patent #CN202410615904.9; CN202310704640.X pending to China National Intellectual Property Administration. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Masson SAS. All rights reserved.)
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- 2024
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7. Discovery of Orally Active Phenylquinoline-Based Soluble Epoxide Hydrolase Inhibitors with Anti-Inflammatory and Analgesic Activity.
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Ding J, Zhu MZ, Liu SM, Liu RC, Xu S, Shehzadi K, Ma HL, Yu MJ, Zhu XH, and Liang JH
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- Animals, Humans, Structure-Activity Relationship, Administration, Oral, Anti-Inflammatory Agents pharmacology, Anti-Inflammatory Agents pharmacokinetics, Anti-Inflammatory Agents chemistry, Anti-Inflammatory Agents chemical synthesis, Male, Mice, Pain drug therapy, Drug Discovery, Solubility, Rats, Epoxide Hydrolases antagonists & inhibitors, Epoxide Hydrolases metabolism, Analgesics pharmacology, Analgesics chemistry, Analgesics chemical synthesis, Analgesics pharmacokinetics, Enzyme Inhibitors pharmacology, Enzyme Inhibitors chemistry, Enzyme Inhibitors pharmacokinetics, Enzyme Inhibitors chemical synthesis, Quinolines pharmacology, Quinolines chemistry, Quinolines chemical synthesis, Quinolines pharmacokinetics
- Abstract
Currently, there are no specific drugs for treating acute pancreatitis. Soluble epoxide hydrolase (sEH) inhibitors show promise, but face challenges like low blood drug concentrations and potential adverse effects on CYP enzymes and the human ether-a-go-go-related gene (hERG). In this study, an approach involving scaffold hopping and structure-activity guided optimization was employed to design a series of phenylquinoline-based sEH inhibitors. Among these compounds, DJ-53 exhibited potent in vitro and in vivo effects in alleviating pain and reducing inflammation. The in vivo mechanism of action involved inhibiting sEH enzyme activity, thereby increasing levels of anti-inflammatory epoxyeicosatrienoic acids (EETs) and decreasing levels of proinflammatory dihydroxyeicosatrienoic acids (DHETs). Importantly, DJ-53 showed exceptional oral bioavailability and pharmacokinetics, while avoiding inhibition of CYP enzymes or the hERG channel. These results highlight DJ-53's potential as a new lead compound for anti-inflammatory and analgesic applications and provide a safe and effective scaffold for developing sEH inhibitors.
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- 2024
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8. A Systematic Review of Laser Treatment for Angiofibromas in Tuberous Sclerosis.
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Gu Y, Verheyden MJ, Sebaratnam DF, and Liu RC
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- Humans, Facial Neoplasms surgery, Laser Therapy methods, Treatment Outcome, Skin Neoplasms surgery, Lasers, Dye therapeutic use, Angiofibroma surgery, Angiofibroma therapy, Angiofibroma etiology, Tuberous Sclerosis complications
- Abstract
Background: While mammalian target of rapamycin inhibitors have revolutionized the management of angiofibroma in tuberous sclerosis complex (TS), physical modalities such as laser are still indicated for recalcitrant lesions., Objective: The authors performed a systematic review of the efficacy and safety of laser treatment for TS-related facial angiofibroma., Methods: The electronic databases such as MEDLINE, Embase, PubMed, Cochrane Central Register of Controlled Trials, and Web of Science were searched from inception to October 10, 2023, for eligible records., Results: Forty-seven articles met the inclusion criteria, representing a total of 217 patients with TS-related facial angiofibroma who received laser treatment. Several lasers have been trialed in patients including carbon dioxide ( n = 95, 43.7%), pulsed dye ( n = 21, 9.7%), argon ( n = 16, 7.4%), neodymium-doped: yttrium aluminum garnet ( n = 12, 5.5%), copper vapor ( n = 9, 4.1%), potassium titanyl phosphate ( n = 7, 3.2%), erbium: yttrium aluminum garnet ( n = 2, 0.9%), lasers and various combination therapies ( n = 55, 25.3%)., Conclusion: Potassium titanyl phosphate, pulsed dye, and neodymium-dopsed:yttrium aluminum garnet lasers are better suited to manage the vascular components of angiofibroma while ablative lasers such as erbium: yttrium aluminum garnet and carbon dioxide lasers may present better options for lesions with a prominent fibrous component. While several lasers have been trialed with broadly favorable results, the low level of evidence precludes definitive conclusions, and no single laser appears superior., (Copyright © 2024 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of the American Society for Dermatologic Surgery, Inc.)
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- 2024
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9. Vocal recognition of partners by female prairie voles.
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Warren MR, Young LJ, and Liu RC
- Abstract
Recognizing conspecifics is vitally important for differentiating kin, mates, offspring and social threats.
1 Although often reliant upon chemical or visual cues, individual recognition across the animal kingdom is also facilitated by unique acoustic signatures in vocalizations.2-4 However, amongst the large Muroidea superfamily of rodents that encompasses laboratory species amenable to neurobiological studies, there is scant behavioral evidence for individual vocal recognition despite individual acoustic variation.5-10 Playback studies have found evidence for coarse communicative functions like mate attraction and territorial defense, but limited finer ability to discriminate known individuals' vocalizations.11-17 Such a capacity would be adaptive for species that form lifelong pair bonds requiring partner identification across timescales, distances and sensory modalities, so to improve the chance of finding individual vocal recognition in a Muroid rodent, we investigated vocal communication in the prairie vole ( Microtus ochrogaster ) - one of the few socially monogamous mammals.18 We found that the ultrasonic vocalizations of adult prairie voles can communicate individual identity. Even though the vocalizations of individual males change after cohabitating with a female to form a bond, acoustic variation across individuals is greater than within an individual so that vocalizations of different males in a common context are identifiable above chance. Critically, females behaviorally discriminate their partner's vocalizations over a stranger's, even if emitted to another stimulus female. These results establish the acoustic and behavioral foundation for individual vocal recognition in prairie voles, where neurobiological tools19-22 enable future studies revealing its causal neural mechanisms., Competing Interests: DECLARATION OF INTERESTS The authors declare no competing interests.- Published
- 2024
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10. Value of multiparametric magnetic resonance imaging in distinguishing sinonasal lymphoma from sinonasal carcinoma: a case control study.
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Liu C, Wang Y, Zhang D, Zhou J, Wu Y, Guo Y, Liu RC, and Xu JE
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- Humans, Male, Female, Middle Aged, Diagnosis, Differential, Adult, Aged, Case-Control Studies, Contrast Media, Carcinoma diagnostic imaging, ROC Curve, Sensitivity and Specificity, Young Adult, Paranasal Sinus Neoplasms diagnostic imaging, Lymphoma diagnostic imaging, Diffusion Magnetic Resonance Imaging methods, Multiparametric Magnetic Resonance Imaging methods
- Abstract
Background: The study aimed to evaluate the diagnostic efficacy of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) and diffusion-weighted imaging (DWI) parameters in distinguishing sinonasal lymphoma from sinonasal carcinoma., Methods: Forty-two participants with histologically confirmed sinonasal lymphomas and fifty-two cases of sinonasal carcinoma underwent imaging with a 3.0T MRI scanner. DCE-MRI and DWI were conducted, and various parameters including type of time-intensity curve(TIC), time to peak, peak enhancement, peak contrast enhancement, washout rate, apparent diffusion coefficient (ADC), and relative ADC were measured. Binary logistic regression and receiver operating characteristic (ROC) curve analysis were employed to assess the diagnostic capability of individual and combined indices for differentiating nasal sinus lymphoma from nasal sinus carcinoma., Results: Sinonasal lymphoma predominantly exhibited type II TIC(n = 20), whereas sinonasal carcinoma predominantly exhibited type III TIC(n = 23). Significant differences were observed in all parameters except washout ratio (p < 0.05), and ADC value emerged as the most reliable diagnostic tool in single parameter. Combined DCE-MRI parameters demonstrated superior diagnostic efficacy compared to individual parameters, with the highest efficiency (area under curve = 0.945) achieved when combining all parameters of DCE-MRI and DWI., Conclusions: Multiparametric evaluation involving contrast-enhanced dynamic MRI and DWI holds considerable diagnostic value in distinguishing sinonasal lymphoma from sinonasal carcinoma., (© 2024. The Author(s).)
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- 2024
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11. Exploring mycorrhizal diversity in sympatric mycoheterotrophic plants: a comparative study of Monotropastrum humile var. humile and M. humile var. glaberrimum.
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Liu RC, Lin WR, and Wang PH
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- Sympatry, Asteraceae microbiology, Phylogeny, Soil Microbiology, Mycorrhizae physiology, Mycorrhizae classification, Mycorrhizae genetics, Biodiversity
- Abstract
Mycoheterotrophic plants (MHPs) rely on their mycorrhizal fungus for carbon and nutrient supply, thus a shift in mycobionts may play a crucial role in speciation. This study aims to explore the mycorrhizal diversity of two closely related and sympatric fully MHPs, Monotropastrum humile var. humile (Mhh) and M. humile var. glaberrimum (Mhg), and determine their mycorrhizal associations. A total of 1,108,710 and 1,119,071 ectomycorrhizal fungal reads were obtained from 31 Mhh and 31 Mhg, and these were finally assigned to 227 and 202 operational taxonomic units, respectively. Results show that sympatric Mhh and Mhg are predominantly associated with different fungal genera in Russulaceae. Mhh is consistently associated with members of Russula, whereas Mhg is associated with members of Lactarius. Associating with different mycobionts and limited sharing of fungal partners might reduce the competition and contribute to their coexistence. The ectomycorrhizal fungal communities are significantly different among the five forests in both Mhh and Mhg. The distinct mycorrhizal specificity between Mhh and Mhg suggests the possibility of different mycobionts triggered ecological speciation between sympatric species., (© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
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- 2024
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12. Integration of Chronological Age Does Not Improve the Performance of a Mixed-Effect Model Using Comorbidity Burden and Frailty to Predict 90-Day Readmission After Surgery for Degenerative Scoliosis.
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Shahrestani S, Chung LK, Brown NJ, Reese S, Liu RC, Prasad AA, Alluri RK, Hah R, Liu JC, and Safaee MM
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- Humans, Female, Male, Aged, Middle Aged, Age Factors, Postoperative Complications epidemiology, Aged, 80 and over, Patient Readmission statistics & numerical data, Scoliosis surgery, Frailty epidemiology, Comorbidity
- Abstract
Objective: We evaluated the contributions of chronological age, comorbidity burden, and/or frailty in predicting 90-day readmission in patients undergoing degenerative scoliosis surgery., Methods: Patients were identified through the Healthcare Cost and Utilization Project Nationwide Readmissions Database. Frailty was assessed using the Johns Hopkins Adjusted Clinical Groups frailty-defining indicator. Comorbidity was assessed using the Elixhauser Comorbidity Index (ECI). Generalized linear mixed-effects models were created to predict readmission using age, frailty, and/or ECI. Area under the curve (AUC) was compared using DeLong's test., Results: A total of 8104 patients were identified. Readmission rate was 9.8%, with infection representing the most common cause (3.5%). Our first model utilized chronological age, ECI, and/or frailty as primary predictors. The combination of ECI + frailty + age performed best, but the inclusion of chronological age did not significantly improve performance compared to ECI + frailty alone (AUC 0.603 vs. 0.599, P = 0.290). A second model using only chronological age and frailty as primary predictors performed better, however the inclusion of chronological age worsened performance when compared to frailty alone (AUC 0.747 vs. 0.743, P = 0.043)., Conclusions: These data support frailty as a predictor of 90-day readmission within a nationally representative sample. Frailty alone performed better than combinations of ECI and age. Interestingly, the integration of chronological age did not dramatically improve the model's performance. Limitations include the use of a national registry and a single frailty index. This provides impetus to explore biological age, rather than chronological age, as a potential tool for surgical risk assessment., (Copyright © 2024 Elsevier Inc. All rights reserved.)
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- 2024
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13. Diabetes ketoacidosis and Recurrent Childhood Stroke-like Episodes.
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Liu RC, Sheu JN, Liu CS, and Tsai JD
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- Humans, Female, Infant, Edema complications, Vomiting complications, MELAS Syndrome complications, MELAS Syndrome diagnosis, MELAS Syndrome genetics, Diabetic Ketoacidosis complications, Stroke complications, Acidosis, Lactic complications, Ketosis complications, Diabetes Mellitus
- Abstract
A 13-year and 4-month-old girl was brought to the emergency department due to fever, dizziness,vomiting, and blurred vision. Laboratory data revealed hyperglycemia with an HbA1C of 7.3 percent, ketonuria, and lactic acidosis. The initial impression was diabetic ketoacidosis. During admission, recurrent focal impaired awareness seizures were noted, and magnetic resonance imaging of the brain revealed multiple brain infarctions in the bilateral cerebrum. Mitochondrial gene report showed A3243 G with 64 percent heteroplasmy, and mitochondrial encephalomyopathy, lactic acidosis, and stroke-like episodes was diagnosed. At 16 years and 7 months old, recurrence of vomiting and onset of right hemianopia and mild right limb weakness were observed and follow-up T2 images showed massive edema in her left parieto-occipital region. At 16 years and 10 months old, she developed clonus in her left hand associated with an unsteady gait and blurred vision. MRI of the brain revealed recurrent brain infarction, and T2 images showed massive edema of the right parieto-occipital region. MELAS is a rare disease entity and occasionally comorbid with mitochondrial diabetes in childhood. Characteristic radiological features of MELAS include infarction-like lesions over the parieto-occipital or parieto-temporal areas, which help distinguish MELAS from childhood ischemic stroke.
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- 2024
14. The causal relationship between sleep disturbances and the risk of frailty: a two-sample Mendelian randomization study.
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Lu ZX, Sang N, Liu RC, Li BH, Zhang MY, Zhang MH, Cheng MC, and Wu GC
- Abstract
Objective: Adequate sleep is closely related to people's health. However, with increasing age, the quality of sleep worsens. At the same time, among elderly individuals, frailty is also a disturbing factor, which makes elderly individuals more vulnerable to negative factors. To explore the relationship between the two, we conducted this study., Methods: In this paper, independent genetic variations related to insomnia, sleep duration and daytime sleepiness were selected as IVs, and related genetic tools were used to search published genome-wide association studies for a two-sample Mendelian randomization (TSMR) analysis. The inverse-variance weighted (IVW) method was used as the main Mendelian randomization analysis method. Cochran's Q test was used to test heterogeneity, MR‒Egger was used to test horizontal pleiotropy, and the MR-PRESSO test was used to remove outliers., Results: According to our research, insomnia (OR = 1.10, 95% CI 1.03-1.17, P = 2.59e-97), long sleep duration (OR = 0.66, 95% CI 0.37-1.17, P = 0.02), short sleep duration (OR = 1.30, 95% CI 1.22-1.38, P = 2.23e-17) and daytime sleepiness (OR = 1.49, 95% CI 1.25-1.77, P = 0.96e-4) had a bidirectional causal relationship with frailty., Conclusions: Our research showed that there is a causal relationship between sleep disturbances and frailty. This result was obtained by a TSMR analysis, which involves the use of genetic variation as an IV to determine causal relationships between exposure and outcome. Future TSMR studies should include a larger sample for analysis., (© 2024. The Author(s).)
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- 2024
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15. Discovery of a novel lead characterized by a stilbene-extended scaffold against sepsis as soluble epoxide hydrolase inhibitors.
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Feng ZQ, Ding J, Zhu MZ, Xie WS, Liu RC, Liu SS, Liu SM, Yu MJ, Zhu XH, and Liang JH
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- Mice, Humans, Animals, Structure-Activity Relationship, Liver metabolism, Enzyme Inhibitors pharmacology, Enzyme Inhibitors chemistry, Epoxide Hydrolases, Sepsis drug therapy
- Abstract
Recently, some inhibitors of soluble epoxide hydrolase (sEH) showed limited potential in treating sepsis by increasing survival time, but they have unfortunately failed to improve survival rates. In this study, we initially identified a new hit 11D, belonging to a natural skeleton known as stilbene and having an IC
50 of 644 nM on inhibiting murine sEH. Natural scaffold-based sEH inhibitors are paid less attention. A combination of structure-activity relationships (SARs)-guided structural optimization and computer-aided skeleton growth led to a highly effective lead compound 70P (IC50 : 4.0 nM). The dose-response study indicated that 70P (at doses of 0.5-5 mg/kg, ip.) significantly increased survival rates and survival time by reducing the levels of the inflammatory factors TNF-α and IL-6 in the liver. Interestingly, 70P exhibited much higher accumulation in the liver than in plasma (AUC ratio: 175). In addition, 70P exhibits equal IC50 value (1.5 nM) on inhibiting human sEH as EC5026 (1.7 nM). In conclusion, the natural scaffold-extended sEH inhibitor 70P has the potential to become a new promising lead for addressing the unmet medical need in sepsis treatment, which highlighted the importance of natural skeleton in developing sEH inhibitors., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Jian-Hua Liang has patent #CN202310704634.4 pending to Beijing Institute of Technology. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Masson SAS. All rights reserved.)- Published
- 2024
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16. 'Skip' osteoporosis vertebral compression fractures caused by electrical injury: a case report and review of the literature.
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Jia R, Sun Y, Liu C, Liu RC, and Long Y
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- Humans, Male, Adult, Treatment Outcome, Back Pain etiology, Lumbar Vertebrae diagnostic imaging, Spinal Fractures complications, Spinal Fractures diagnostic imaging, Fractures, Compression complications, Fractures, Compression diagnostic imaging, Osteoporotic Fractures complications, Osteoporotic Fractures diagnostic imaging, Osteoporosis complications
- Abstract
Introduction: Electrical injuries rarely result in fractures, such as long bone fractures and spinal fractures. A few articles have reported osteoporosis vertebral compression fractures (OVCFs) caused by electrical injuries. Here, we present a rare case of 37-year-old male suffering from the 9th thoracic (T9) and 5th lumbar (L5) OVCFs after receiving a electric shock., Case Presentation: A 37-year-old Han male experienced an electric shock (480 V direct current) at the working time and felt immediately serious back pain. He did not fall and lose consciousness. X-ray and magnetic resonance imaging showed acute OVCFs, as well as dual-energy X-ray absorptiometry indicated osteoporosis. Normal laboratory tests can avoid secondary osteoporosis resulting from metabolic diseases and tumors. Finally, he was diagnosed with acute discontinuous OVCFs (T9 and L5). The patient denied having a history of back pain, whereas, he had a history of smoking, alcohol abuse, and congenital heart disease (tetralogy of Fallot) were associated with osteoporosis. Considering no local kyphosis and < 50% anterior body compression, we selected conservative treatment for this patient. At a 1-year and 3-year follow-up, the lateral thoracic and lumbar radiography demonstrated no instability of the spine, and the back pain has been relieved., Conclusions: This rare case reminds us the importance of consulting a detailed medical history when we encounter young patients receiving electrical injuries. Discontinuously OVCFs must not be overlooked, even though we encounter a young man., (© 2024. The Author(s).)
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- 2024
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17. Development of high-concentration labeled colloidal gold immunochromatographic test strips for detecting african swine fever virus p30 protein antibodies.
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Liu HC, Liu RC, Hu MR, Yang AB, Wu RH, Chen Y, Zhang J, Bai JS, Wu SB, Chen JP, Long YF, Jiang Y, and Zhou B
- Abstract
African Swine Fever (ASF), caused by the African swine fever virus (ASFV), has inflicted significant economic losses on the pig industry in China. The key to mitigating its impact lies in accurate screening and strict biosecurity measures. In this regard, the development of colloidal gold immunochromatographic test strips (CGITS) has proven to be an effective method for detecting ASFV antibodies. These test strips are based on the ASFV p30 recombinant protein and corresponding monoclonal antibodies. The design of the test strip incorporates a high-concentration colloidal gold-labeled p30 recombinant protein as the detection sensor, utilizing Staphylococcal Protein A (SPA) as the test line (T line), and p30 monoclonal antibody as the control line (C line). The sensitivity and specificity of the test strip were evaluated after optimizing the labeling concentration, pH, and protein dosage. The research findings revealed that the optimal colloidal gold labeling concentration was 0.05 %, the optimal pH was 8.4, and the optimal protein dosage was 10 μg/mL. Under these conditions, the CGITS demonstrated a detection limit of 1:512 dilution of ASFV standard positive serum, without exhibiting cross-reactivity with antibodies against other viral pathogens. Furthermore, the test strips remained stable for up to 20 days when stored at 50 °C and 4 °C. Comparatively, the CGITS outperformed commercial ELISA kits, displaying a sensitivity of 90.9 % and a specificity of 96.2 %. Subsequently, 108 clinical sera were tested to assess its performance. The data showed that the coincidence rate between the CGITS and ELISA was 93.5 %. In conclusion, the rapid colloidal gold test strip provides an efficient and reliable screening tool for on-site clinical detection of ASF in China. Its accuracy, stability, and simplicity make it a valuable asset in combating the spread of ASF and limiting its impact on the pig industry., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2024 The Authors. Published by Elsevier Ltd.)
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- 2024
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18. Changes in frailty and depressive symptoms among middle-aged and older Chinese people: a nationwide cohort study.
- Author
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Sang N, Liu RC, Zhang MH, Lu ZX, Wu ZG, Zhang MY, Li BH, Wei M, Pan HF, and Wu GC
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- Male, Middle Aged, Humans, Female, Aged, Cohort Studies, Longitudinal Studies, Depression epidemiology, Depression diagnosis, China epidemiology, Frailty epidemiology, East Asian People
- Abstract
Background and Aims: The older people bears a severe burden of disease due to frailty and depressive symptoms, however, the results of association between the two in the older Chinese people have been conflicting. Therefore, this study aimed to investigate the developmental trajectories and interactions of frailty and depressive symptoms in the Chinese middle-aged and older adults., Methods: The study used four waves of data from 2011, 2013, 2015 and 2018 in the China Health and Retirement Longitudinal Study (CHARLS) database, focused on middle-aged and older people ≥ 45 years of age, and analyzed using latent growth models and cross-lagged models., Results: The parallel latent growth model showed that the initial level of depressive symptoms had a significant positive predictive effect on the initial level of frailty. The rate of change in depressive symptoms significantly positively predicted the rate of change in frailty. The initial level of frailty had a significant positive predictive effect on the initial level of depressive symptoms, but a significant negative predictive effect on the rate of change in depressive symptoms. The rate of change in frailty had a significant positive predictive effect on the rate of change in depressive symptoms. The results of the cross-lagged analysis indicated a bidirectional causal association between frailty and depressive symptoms in the total sample population. Results for the total sample population grouped by age and gender were consistent with the total sample., Conclusions: This study recommends advancing the age of concern for frailty and depressive symptoms to middle-aged adults. Both men and women need early screening and intervention for frailty and depressive symptoms to promote healthy aging., (© 2024. The Author(s).)
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- 2024
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19. Instinct to insight: Neural correlates of ethological strategy learning.
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Lu K, Wong KT, Zhou LN, Shi YT, Yang CJ, and Liu RC
- Abstract
In ethological behaviors like parenting, animals innately follow stereotyped patterns of choices to decide between uncertain outcomes but can learn to modify their strategies to incorporate new information. For example, female mice in a T-maze instinctively use spatial-memory to search for pups where they last found them but can learn more efficient strategies employing pup-associated acoustic cues. We uncovered neural correlates for transitioning between these innate and learned strategies. Auditory cortex (ACx) was required during learning. ACx firing at the nest increased with learning and correlated with subsequent search speed but not outcome. Surprisingly, ACx suppression rather than facilitation during search was more prognostic of correct sound-cued outcomes - even before adopting a sound-cued strategy. Meanwhile medial prefrontal cortex encoded the last pup location, but this decayed as the spatial-memory strategy declined. Our results suggest a neural competition between a weakening spatial-memory and strengthening sound-cued neural representation to mediate strategy switches.
- Published
- 2023
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20. ' Candidatus Phytoplasma ziziphi' Changes the Metabolite Composition of Jujube Tree Leaves and Affects the Feeding Behavior of Its Insect Vector Hishimonus hamatus Kuoh.
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Liu RC, Li BL, Chen XL, Liu JJ, Luo K, and Li GW
- Abstract
Hishimonus hamatus Kuoh is a leafhopper species native to China that feeds on Chinese jujube leaves. This leafhopper species has been verified to transmit jujube witches' broom (JWB) disease, caused by phytoplasma, a fatal plant pathogen, which belongs to the phytoplasma subgroup 16SrV-B. The transmission of JWB phytoplasma largely relies on the feeding behavior of piercing-sucking leafhoppers. However, the specific mechanisms behind how and why the infection of JWB influences the feeding behavior of these leafhoppers are not fully understood. To address this, a study was conducted to compare the feeding patterns of H. hamatus when feeding JWB-infested jujube leaves to healthy leaves using the electrical penetration graph (EPG) technique. Then, a widely targeted metabolome analysis was performed to identify differences in the metabolite composition of JWB-infected jujube leaves and that of healthy jujube leaves. The results of EPG analyses revealed that when feeding on JWB-infected jujube leaves, H. hamatus exhibited an increased frequency of phloem ingestion and spent longer in the phloem feeding phase compared to when feeding on healthy leaves. In addition, the results of metabolomic analyses showed that JWB-infected leaves accumulated higher levels of small-molecular carbohydrates, free amino acids, and free fatty acids, as well as lower levels of lignans, coumarins and triterpenoids compared to healthy leaves. The above results indicated that the H. hamatus preferentially fed on the phloem of infected leaves, which seems to be linked to the transmission of the JWB phytoplasma. The results of metabolomic analyses partially imply that the chemical compounds might play a role in making the infected leaves more attractive to H. hamatus for feeding., Competing Interests: The authors declare no conflicts of interest.
- Published
- 2023
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21. Developmental pyrethroid exposure causes a neurodevelopmental disorder phenotype in mice.
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Curtis MA, Dhamsania RK, Branco RC, Guo JD, Creeden J, Neifer KL, Black CA, Winokur EJ, Andari E, Dias BG, Liu RC, Gourley SL, Miller GW, and Burkett JP
- Abstract
Neurodevelopmental disorders (NDDs) are a widespread and growing public health challenge, affecting as many as 17% of children in the United States. Recent epidemiological studies have implicated ambient exposure to pyrethroid pesticides during pregnancy in the risk for NDDs in the unborn child. Using a litter-based, independent discovery-replication cohort design, we exposed mouse dams orally during pregnancy and lactation to the Environmental Protection Agency's reference pyrethroid, deltamethrin, at 3 mg/kg, a concentration well below the benchmark dose used for regulatory guidance. The resulting offspring were tested using behavioral and molecular methods targeting behavioral phenotypes relevant to autism and NDD, as well as changes to the striatal dopamine system. Low-dose developmental exposure to the pyrethroid deltamethrin (DPE) decreased pup vocalizations, increased repetitive behaviors, and impaired both fear conditioning and operant conditioning. Compared with control mice, DPE mice had greater total striatal dopamine, dopamine metabolites, and stimulated dopamine release, but no difference in vesicular dopamine capacity or protein markers of dopamine vesicles. Dopamine transporter protein levels were increased in DPE mice, but not temporal dopamine reuptake. Striatal medium spiny neurons showed changes in electrophysiological properties consistent with a compensatory decrease in neuronal excitability. Combined with previous findings, these results implicate DPE as a direct cause of an NDD-relevant behavioral phenotype and striatal dopamine dysfunction in mice and implicate the cytosolic compartment as the location of excess striatal dopamine., (© The Author(s) 2023. Published by Oxford University Press on behalf of National Academy of Sciences.)
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- 2023
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22. Two different strategies of Diversispora spurca -inoculated walnut seedlings to improve leaf P acquisition at low and moderate P levels.
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Zou YN, Xu YJ, Liu RC, Huang GM, Kuča K, Srivastava AK, Hashem A, Abd Allah EF, and Wu QS
- Abstract
Walnut ( Juglans regia ) is an important nut tree species in the world, whereas walnut trees often face inadequate phosphorus (P) levels of soil, negatively limiting its growth and yield. Arbuscular mycorrhizal fungi (AMF) can colonize walnut roots, but whether and how AMF promotes walnut growth, physiological activities, and P acquisition is unclear. The present study aimed to evaluate the effects of Diversispora spurca on plant growth, chlorophyll component concentrations, leaf gas exchange, sugar and P concentrations, and expression of purple acid phosphatase ( PAP ) and phosphate transporter ( PT ) genes in leaves of J . regia var. Liaohe 1 seedling under moderate (100 μmol/L P) and low P (1 μmol/L P) levels conditions. Three months after inoculation, the root mycorrhizal colonization rate and soil hyphal length were 45.6-53.2% and 18.7-39.9 cm/g soil, respectively, and low P treatment significantly increased both root mycorrhizal colonization rate and soil hyphal length. Low P levels inhibited plant growth (height, stem diameter, and total biomass) and leaf gas exchange (photosynthetic rate, transpiration rate and stomatal conductance), while AMF colonization significantly increased these variables at moderate and low P levels. Low P treatment limited the level of chlorophyll a , but AMF colonization did not significantly affect the level of chlorophyll components, independent on soil P levels. AMF colonization also increased leaf glucose at appropriate P levels and leaf fructose at low P levels than non-AMF treatment. AMF colonization significantly increased leaf P concentration by 21.0-26.2% than non-AMF colonization at low and moderate P levels. Low P treatment reduced the expression of leaf JrPAP10 , JrPAP12 , and JrPT3;2 in the inoculated plants, whereas AMF colonization up-regulated the expression of leaf JrPAP10 , JrPAP12 , and JrPT3;2 at moderate P levels, although AMF did not significantly alter the expression of JrPAPs and JrPTs at low P levels. It is concluded that AMF improved plant growth, leaf gas exchange, and P acquisition of walnut seedlings at different P levels, where mycorrhizal promotion of P acquisition was dominated by direct mycorrhizal involvement in P uptake at low P levels, while up-regulation of host PAPs and PTs expressions at moderate P levels., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Zou, Xu, Liu, Huang, Kuča, Srivastava, Hashem, Abd_Allah and Wu.)
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- 2023
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23. Hearing Vocalizations during First Social Experience with Pups Increase Bdnf Transcription in Mouse Auditory Cortex.
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Moreno A, Rajagopalan S, Tucker MJ, Lunsford P, and Liu RC
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- Animals, Female, Mice, Humans, Animals, Newborn, Vocalization, Animal physiology, Brain-Derived Neurotrophic Factor genetics, Acoustic Stimulation methods, Hearing, Maternal Behavior physiology, RNA, Messenger, Auditory Cortex physiology
- Abstract
While infant cues are often assumed to innately motivate maternal response, recent research highlights how the neural coding of infant cues is altered through maternal care. Infant vocalizations are important social signals for caregivers, and evidence from mice suggests that experience caring for mouse pups induces inhibitory plasticity in the auditory cortex (AC), though the molecular mediators for such AC plasticity during the initial pup experience are not well delineated. Here, we used the maternal mouse communication model to explore whether transcription in AC of a specific, inhibition-linked, memory-associated gene, brain-derived neurotrophic factor ( Bdnf ) changes due to the very first pup caring experience hearing vocalizations, while controlling for the systemic influence of the hormone estrogen. Ovariectomized and estradiol or blank-implanted virgin female mice hearing pup calls with pups present had significantly higher AC exon IV Bdnf mRNA compared to females without pups present, suggesting that the social context of vocalizations induces immediate molecular changes at the site of auditory cortical processing. E2 influenced the rate of maternal behavior but did not significantly affect Bdnf mRNA transcription in the AC. To our knowledge, this is the first time Bdnf has been associated with processing social vocalizations in the AC, and our results suggest that it is a potential molecular component responsible for enhancing future recognition of infant cues by contributing to AC plasticity., Competing Interests: The authors declare that they have no conflicts of interests., (Copyright © 2023 Amielle Moreno et al.)
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- 2023
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24. Potential ultrasonic anatomical markers of obstructive sleep apnoea-hypopnoea syndrome.
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Lun HM, Liu RC, Hu Q, Liu YL, Wei LS, Wu D, Wang F, and Zhu SY
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- Humans, Ultrasonics, Polysomnography, Ultrasonography, Sleep Apnea, Obstructive diagnostic imaging, Sleep Apnea Syndromes
- Abstract
Aim: To investigate the potential value of ultrasonography in evaluating the pathophysiology of obstructive sleep apnoea-hypopnoea syndrome (OSAHS) by assessing the correlation of critical ultrasonic anatomical characteristics of the oropharynx with the severity of OSAHS., Materials and Methods: One hundred and seventy-one patients with suspected OSAHS underwent oropharyngeal sonographic examination and overnight polysomnography. Ultrasonic measurement was compared with the apnoea-hypopnoea index (AHI) and other parameters. An ordinal logistic regression model was used to identify potential ultrasonic anatomical markers for OSAHS., Results: The AHI was significantly correlated with lingual height (r=0.40, p<0.01), maximal width of the tongue (r=0.35, p<0.01), and distance from the symphysis of the mandible to the hyoid bone (M-HB) (r=0.24, p<0.01). A positive relationship between Friedman tongue position (FTP) grades and lingual height (r=0.24, p<0.01), between FTP grades and maximal width of the tongue (r=0.23, p<0.01), and between FTP grades and width of tongue base (TB; r=0.17, p<0.05) was found. Multivariate models adjusted for sex, age, and body mass index (BMI) revealed that lingual height (95% confidence interval [CI]: 1.04-1.24; p=0.004) is independently associated with a higher risk for the severity of OSAHS., Conclusions: Ultrasonography may be a potential imaging method for providing additional useful information about the correlation between ultrasound findings and the severity of OSAHS. Lingual height could be considered an ultrasonic anatomical marker for determining the severity of OSAHS patients independent of age, sex, and BMI., (Copyright © 2022 The Royal College of Radiologists. Published by Elsevier Ltd. All rights reserved.)
- Published
- 2023
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25. Advances in traditional Chinese medicine as adjuvant therapy for diabetic foot.
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Liu FS, Li Y, Guo XS, Liu RC, Zhang HY, and Li Z
- Abstract
Diabetes mellitus (DM) is a complex disease that often causes multiple systemic complications that have become a major international public health problem. Diabetic foot (DF) is one of the severe and frequent chronic complications of DM due to vascular lesions and neuropathy. DF ulcers (DFU) affect approximately 15% of people with DM and are the leading cause of death and disability. The prevalence and recurrence of DF are worrisome, and morbidity and mortality are also on the rise, which poses a substantial socioeconomic burden. Treating DF is difficult for clinicians and requires multidisciplinary cooperation, combining local and systemic therapy to reduce amputation and case-fatality rates. Traditional Chinese Medicine (TCM) has received extensive attention due to noticeable therapeutic effects and few adverse reactions. In recent years, research on DF treatment by TCM has been increasing, and further progress has been made. TCM includes oral medication, injectable preparations, and adjuvant therapy. This article reviews the relevant research on TCM-related adjuvant therapy for DF. We describe current progress in TCM in terms of external application, acupuncture, massage, acupoint injection, foot bath, fumigation, and moxibustion, as well as the mechanisms involved., Competing Interests: Conflict-of-interest statement: Authors declare no conflict of interests for this article., (©The Author(s) 2022. Published by Baishideng Publishing Group Inc. All rights reserved.)
- Published
- 2022
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26. Syntheses, structures, and magnetic properties of acetate-bridged lanthanide complexes based on a tripodal oxygen ligand.
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Sheng Y, Jiang YJ, Cheng ZH, Liu RC, Ge JY, and Gao F
- Abstract
Four homodinuclear lanthanide complexes, Dy
2 (LOEt )2 (OAc)4 ( 1 ), Tb2 (LOEt )2 (OAc)4 ( 2 ), Ho2 (LOEt )2 (OAc)4 ( 3 ), and Gd2 (LOEt )2 (OAc)4 ( 4 ), have been synthesized and characterized based on a tripodal oxygen ligand Na [(η5 -C5 H5 )Co(P(O)(OC2 H5 )2 )3 ] (NaLOEt ). Structural analyses show that the acetate anions bridge two symmetry-related Ln3+ ions in the μ2 :η1 :η1 and μ2 :η1 :η2 coordination patterns, and each lanthanide (III) ion owns a twisted square antiprism (SAPR) conformation. Static magnetic measurements reveal the weak intramolecular ferromagnetic interaction between dysprosium (III) ions in 1 and antiferromagnetic Ln3+ ···Ln3+ couplings in the other three complexes. Through the analysis of the ligand-field effect and magnetic anisotropy axis orientation, the reasons for the lack of dynamic magnetic behavior in 1 were identified., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Sheng, Jiang, Cheng, Liu, Ge and Gao.)- Published
- 2022
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27. More than the end: OFF response plasticity as a mnemonic signature of a sound's behavioral salience.
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Anandakumar DB and Liu RC
- Abstract
In studying how neural populations in sensory cortex code dynamically varying stimuli to guide behavior, the role of spiking after stimuli have ended has been underappreciated. This is despite growing evidence that such activity can be tuned, experience-and context-dependent and necessary for sensory decisions that play out on a slower timescale. Here we review recent studies, focusing on the auditory modality, demonstrating that this so-called OFF activity can have a more complex temporal structure than the purely phasic firing that has often been interpreted as just marking the end of stimuli. While diverse and still incompletely understood mechanisms are likely involved in generating phasic and tonic OFF firing, more studies point to the continuing post-stimulus activity serving a short-term, stimulus-specific mnemonic function that is enhanced when the stimuli are particularly salient. We summarize these results with a conceptual model highlighting how more neurons within the auditory cortical population fire for longer duration after a sound's termination during an active behavior and can continue to do so even while passively listening to behaviorally salient stimuli. Overall, these studies increasingly suggest that tonic auditory cortical OFF activity holds an echoic memory of specific, salient sounds to guide behavioral decisions., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Anandakumar and Liu.)
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- 2022
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28. Sex-specific and social experience-dependent oxytocin-endocannabinoid interactions in the nucleus accumbens: implications for social behaviour.
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Borie AM, Young LJ, and Liu RC
- Subjects
- Animals, Arvicolinae metabolism, Endocannabinoids, Female, Humans, Male, Nucleus Accumbens metabolism, Receptors, Oxytocin metabolism, Social Behavior, Oxytocin, Pair Bond
- Abstract
Oxytocin modulates social behaviour across diverse vertebrate taxa, but the precise nature of its effects varies across species, individuals and lifetimes. Contributing to this variation is the fact that oxytocin's physiological effects are mediated through interaction with diverse neuromodulatory systems and can depend on the specifics of the local circuits it acts on. Furthermore, those effects can be influenced by both genetics and experience. Here we discuss this complexity through the lens of a specific neuromodulatory system, endocannabinoids, interacting with oxytocin in the nucleus accumbens to modulate prosocial behaviours in prairie voles. We provide a survey of current knowledge of oxytocin-endocannabinoid interactions in relation to social behaviour. We review in detail recent research in monogamous female prairie voles demonstrating that social experience, such as mating and pair bonding, can change how oxytocin modulates nucleus accumbens glutamatergic signalling through the recruitment of endocannabinoids to modulate prosocial behaviour toward the partner. We then discuss potential sex differences in experience-dependent modulation of the nucleus accumbens by oxytocin in voles based on new data in males. Finally, we propose that future oxytocin-based precision medicine therapies should consider how prior social experience interacts with sex and genetics to influence oxytocin actions. This article is part of the theme issue 'Interplays between oxytocin and other neuromodulators in shaping complex social behaviours'.
- Published
- 2022
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29. Ultrasound-based radiomics for predicting different pathological subtypes of epithelial ovarian cancer before surgery.
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Tang ZP, Ma Z, He Y, Liu RC, Jin BB, Wen DY, Wen R, Yin HH, Qiu CC, Gao RZ, Ma Y, and Yang H
- Subjects
- Carcinoma, Ovarian Epithelial diagnostic imaging, Carcinoma, Ovarian Epithelial surgery, Female, Humans, Retrospective Studies, Ultrasonography, Nomograms, Ovarian Neoplasms diagnostic imaging, Ovarian Neoplasms surgery
- Abstract
Objective: To evaluate the value of ultrasound-based radiomics in the preoperative prediction of type I and type II epithelial ovarian cancer., Methods: A total of 154 patients with epithelial ovarian cancer were enrolled retrospectively. There were 102 unilateral lesions and 52 bilateral lesions among a total of 206 lesions. The data for the 206 lesions were randomly divided into a training set (53 type I + 71 type II) and a test set (36 type I + 46 type II) by random sampling. ITK-SNAP software was used to manually outline the boundary of the tumor, that is, the region of interest, and 4976 features were extracted. The quantitative expression values of the radiomics features were normalized by the Z-score method, and the 7 features with the most differences were screened by using the Lasso regression tenfold cross-validation method. The radiomics model was established by logistic regression. The training set was used to construct the model, and the test set was used to evaluate the predictive efficiency of the model. On the basis of multifactor logistic regression analysis, combined with the radiomics score of each patient, a comprehensive prediction model was established, the nomogram was drawn, and the prediction effect was evaluated by analyzing the area under the receiver operating characteristic curve (AUC), calibration curve and decision curve., Results: The AUCs of the training set and test set in the radiomics model and comprehensive model were 0.817 and 0.731 and 0.982 and 0.886, respectively. The calibration curve showed that the two models were in good agreement. The clinical decision curve showed that both methods had good clinical practicability., Conclusion: The radiomics model based on ultrasound images has a good predictive effect for the preoperative differential diagnosis of type I and type II epithelial ovarian cancer. The comprehensive model has higher prediction efficiency., (© 2022. The Author(s).)
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- 2022
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30. Symbiotic Fungi Alter the Acquisition of Phosphorus in Camellia oleifera through Regulating Root Architecture, Plant Phosphate Transporter Gene Expressions and Soil Phosphatase Activities.
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Cao MA, Liu RC, Xiao ZY, Hashem A, Abd Allah EF, Alsayed MF, Harsonowati W, and Wu QS
- Abstract
Plant roots can be colonized by many symbiotic fungi, whereas it is unclear whether and how symbiotic fungi including arbuscular mycorrhizal fungi and endophytic fungi promote phosphorus (P) uptake in Camellia oleifera plants. The objective of the present study was to analyze the effect of inoculation with a culturable endophytic fungus ( Piriformospora indica ), three arbuscular mycorrhizal fungi ( Funneliformis mosseae , Diversispora versiformis , and Rhizophagus intraradices ), and mixture of F . mosseae , D . versiformis and R . intraradices on plant growth, root architecture, soil Olsen-P, soil phosphatase activities, leaf and root P concentrations, and phosphate transporter gene expressions, in order to explore the potential and mechanism of these symbiotic fungi on P acquisition. All the symbiotic fungi colonized roots of C . oleifera after 16 weeks, with P . indica showing the best effect on fungal colonization. All the symbiotic fungi significantly increased acid, neutral, and total phosphatase activities in the soil, accompanied with an elevation of soil Olsen-P, of which P . indica presented the best effect. All symbiotic fungal treatments, except D . versiformis , significantly promoted plant growth, coupled with an increase in root total length, area, and volume. Symbiotic fungi almost up-regulated root CoPHO1-3 expressions as well as leaf CoPHO1-1 , CoPHO1-3 , and CoPHT1;4 expressions. Correlation analysis showed that P concentrations in leaves and roots were significantly positively correlated with root morphological variables (length, volume, and surface area) and soil acid, neutral and total phosphatase activities. It is concluded that symbiotic fungi, especially P . indica , played an important role in P uptake of C . oleifera plants through regulating root architecture, part plant phosphate transporter gene expressions and soil phosphatase activities.
- Published
- 2022
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31. Proactive strategies for an inclusive faculty search process.
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Nguyen KH, Thomas K, Liu RC, and Corbett AH
- Subjects
- Humans, Faculty
- Published
- 2022
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32. Whole-genome analysis reveals possible sources of ALV-J infection in an anyi tile-like gray chicken flock.
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Li HQ, Zhang FF, Chen L, Yang Q, Zeng YB, Tan J, Fu GH, Fu QL, Liu RC, Huang Y, Su Q, Tan MF, and Kang ZF
- Subjects
- Animals, Chickens genetics, China epidemiology, Avian Leukosis, Avian Leukosis Virus genetics, Poultry Diseases
- Abstract
Avian leukosis virus (ALV) induces multiple tumors in chicken and is still prevalent in a lot of local flocks in China. In this study, we analyzed the ALV infection status in an Anyi tile-like gray chicken flock by DF1-cells isolation, virus identification, and genome sequencing. Results showed a 29% (29/100) ALV positive rate in this flock. Homology analysis based on env genes illustrated that all these stains belong to subgroup J (92-100% identities) and can be further divided into 5 batches, suggesting a higher diversity of ALV-J within the same flock. The whole-genome analysis of representative stains from each batch confirmed the close relationship between these isolated strains with previously reported strains from different regions (Guangxi, Shandong, and Heilongjiang), revealing the enrichment of different strains in Anyi tile-like grey chickens. This study provides the epidemiological data of ALV-J in a special chicken flock and a reference for the further eradication of ALV in China., (Copyright © 2022 The Authors. Published by Elsevier Inc. All rights reserved.)
- Published
- 2022
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33. Social experience alters oxytocinergic modulation in the nucleus accumbens of female prairie voles.
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Borie AM, Agezo S, Lunsford P, Boender AJ, Guo JD, Zhu H, Berman GJ, Young LJ, and Liu RC
- Subjects
- Animals, Arvicolinae metabolism, Female, Grassland, Humans, Oxytocin pharmacology, Pair Bond, Social Behavior, Nucleus Accumbens metabolism, Receptors, Oxytocin metabolism
- Abstract
Social relationships are dynamic and evolve with shared and personal experiences. Whether the functional role of social neuromodulators also evolves with experience to shape the trajectory of relationships is unknown. We utilized pair bonding in the socially monogamous prairie vole as an example of socio-sexual experience that dramatically alters behaviors displayed toward other individuals. We investigated oxytocin-dependent modulation of excitatory synaptic transmission in the nucleus accumbens as a function of pair-bonding status. We found that an oxytocin receptor agonist decreases the amplitude of spontaneous excitatory postsynaptic currents (sEPSCs) in sexually naive virgin, but not pair-bonded, female voles, while it increases the amplitude of electrically evoked EPSCs in paired voles, but not in virgins. This oxytocin-induced potentiation of synaptic transmission relies on the de novo coupling between oxytocin receptor signaling and endocannabinoid receptor type 1 (CB1) receptor signaling in pair-bonded voles. Blocking CB1 receptors after pair-bond formation increases the occurrence of a specific form of social rejection-defensive upright response-that is displayed toward the partner, but not toward a novel individual. Altogether, our results demonstrate that oxytocin's action in the nucleus accumbens is changed through social experience in a way that regulates the trajectory of social interactions as the relationship with the partner unfolds, potentially promoting the maintenance of a pair bond by inhibiting aggressive responses. These results provide a mechanism by which social experience and context shift oxytocinergic signaling to impact neural and behavioral responses to social cues., Competing Interests: Declaration of interests The authors declare no competing interests., (Copyright © 2022 Elsevier Inc. All rights reserved.)
- Published
- 2022
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34. Imidazolylacetophenone oxime-based multifunctional neuroprotective agents: Discovery and structure-activity relationships.
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Ren B, Guo C, Liu RZ, Bian ZY, Liu RC, Huang LF, and Tang JJ
- Subjects
- Acetophenones chemical synthesis, Acetophenones chemistry, Acetylcholinesterase metabolism, Animals, Biphenyl Compounds antagonists & inhibitors, Cell Line, Cyclooxygenase 2 metabolism, Dose-Response Relationship, Drug, Electrophorus, Enzyme Inhibitors chemical synthesis, Enzyme Inhibitors chemistry, Humans, Imidazoles chemical synthesis, Imidazoles chemistry, Lipopolysaccharides antagonists & inhibitors, Lipopolysaccharides pharmacology, Mice, Molecular Structure, Neuroprotective Agents chemical synthesis, Neuroprotective Agents chemistry, Nitric Oxide antagonists & inhibitors, Nitric Oxide biosynthesis, Oximes chemical synthesis, Oximes chemistry, Picrates antagonists & inhibitors, Rats, Structure-Activity Relationship, Acetophenones pharmacology, Drug Discovery, Enzyme Inhibitors pharmacology, Imidazoles pharmacology, Neuroprotective Agents pharmacology, Oximes pharmacology
- Abstract
Alzheimer's disease (AD) possesses a complex pathogenetic mechanism. Nowadays, multitarget agents are considered to have potential in effectively treating AD via triggering molecules in functionally complementary pathways at the same time. Here, based on the screening (∼1400 compounds) against neuroinflammation, an imidazolylacetophenone oxime ether (IOE) was discovered as a novel hit. In order to obtain SARs, a series of imidazolylacetophenone oxime derivatives were constructed, and their C=N bonds were confirmed as the Z configuration by single crystals. These derivatives exhibited potential multifunctional neuroprotective effects including anti-neuroinflammatory, antioxidative damage, metal-chelating, inhibition of acetylcholinesterase (AChE) properties. Among these derivatives, compound 12i displayed the most potent inhibitory activity against nitric oxide (NO) production with EC
50 value of 0.57 μM 12i can dose-dependently suppress the expression of iNOS and COX-2 but not change the expression of HO-1 protein. Moreover, 12i exhibited evidently neuroprotective effects on H2 O2 -induced PC12 cells damage and ferroptosis without cytotoxicity at 10 μM, as well as selectively metal chelating properties via chelating Cu2+ . In addition, 12i showed a mixed-type inhibitory effect on AChE in vitro. The structure-activity relationships (SARs) analysis indicated that dioxolane groups on benzene ring and rigid oxime ester can improve the activity. Parallel artificial membrane permeation assay (PAMPA) also verified that 12i can overcome the blood-brain barrier (BBB). Overall, this is the first report on imidazolylacetophenone oxime-based multifunctional neuroprotective effects, suggesting that this type of compounds might be novel multifunctional agents against AD., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2021 Elsevier Masson SAS. All rights reserved.)- Published
- 2022
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35. Maturation of Social-Vocal Communication in Prairie Vole ( Microtus ochrogaster ) Pups.
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Warren MR, Campbell D, Borie AM, Ford CL 4th, Dharani AM, Young LJ, and Liu RC
- Abstract
Impairments in social communication are common among neurodevelopmental disorders. While traditional animal models have advanced our understanding of the physiological and pathological development of social behavior, they do not recapitulate some aspects where social communication is essential, such as biparental care and the ability to form long-lasting social bonds. Prairie voles ( Microtus ochrogaster ) have emerged as a valuable rodent model in social neuroscience because they naturally display these behaviors. Nonetheless, the role of vocalizations in prairie vole social communication remains unclear. Here, we studied the ontogeny [from postnatal days (P) 8-16] of prairie vole pup ultrasonic vocalizations (USVs), both when isolated and when the mother was present but physically unattainable. In contrast to other similarly sized rodents such as mice, prairie vole pups of all ages produced isolation USVs with a relatively low fundamental frequency between 22 and 50 kHz, often with strong harmonic structure. Males consistently emitted vocalizations with a lower frequency than females. With age, pups vocalized less, and the acoustic features of vocalizations (e.g., duration and bandwidth) became more stereotyped. Manipulating an isolated pup's social environment by introducing its mother significantly increased vocal production at older (P12-16) but not younger ages, when pups were likely unable to hear or see her. Our data provide the first indication of a maturation in social context-dependent vocal emission, which may facilitate more active acoustic communication. These results help lay a foundation for the use of prairie voles as a model organism to probe the role of early life experience in the development of social-vocal communication., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Warren, Campbell, Borie, Ford, Dharani, Young and Liu.)
- Published
- 2022
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36. Differential metabolism-associated gene expression of duck pancreatic cells in response to two strains of duck hepatitis A virus type 1.
- Author
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Chen Z, Shi SH, Huang Y, Huang CQ, Liu RC, Cheng LF, Fu GH, Chen HM, Wan CH, and Fu QL
- Subjects
- Amino Acids genetics, Amino Acids metabolism, Animals, Ducks virology, Gene Expression, Hepatitis, Viral, Animal genetics, Hepatitis, Viral, Animal metabolism, Hepatitis, Viral, Animal pathology, Pancreas cytology, Pancreas pathology, Pancreas virology, Pancreatitis pathology, Pancreatitis virology, Picornaviridae Infections metabolism, Picornaviridae Infections pathology, Picornaviridae Infections virology, Poultry Diseases genetics, Poultry Diseases metabolism, Poultry Diseases pathology, Real-Time Polymerase Chain Reaction, Sequence Analysis, RNA, Hepatitis Virus, Duck pathogenicity, Hepatitis, Viral, Animal virology, Host-Pathogen Interactions genetics, Picornaviridae Infections veterinary, Poultry Diseases virology
- Abstract
Several outbreaks of duck hepatitis A virus type 1 (DHAV-1), which were characterized by yellow coloration and hemorrhage in pancreatic tissues, have occurred in China. The causative agent is called pancreatitis-associated DHAV-1. The mechanisms involved in pancreatitis-associated DHAV-1 infection are still unclear. Transcriptome analysis of duck pancreas infected with classical-type DHAV-1 and pancreatitis-associated DHAV-1 was carried out. Deep sequencing with Illumina-Solexa resulted in a total of 53.9 Gb of clean data from the cDNA library of the pancreas, and a total of 29,597 unigenes with an average length of 993.43 bp were generated by de novo sequence assembly. The expression levels of D-3-phosphoglycerate dehydrogenase, phosphoserine aminotransferase, and phosphoserine phosphatase, which are involved in glycine, serine, and threonine metabolism pathways, were significantly downregulated in ducks infected with pancreatitis-associated DHAV-1 compared with those infected with classical-type DHAV-1. These findings provide information regarding differences in expression levels of metabolism-associated genes between ducks infected with pancreatitis-associated DHAV-1 and those infected with classical-type DHAV-1, indicating that intensive metabolism disorders may contribute to the different phenotypes of DHAV-1-infection., (© 2021. The Author(s).)
- Published
- 2021
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37. A New Stemness-Related Prognostic Model for Predicting the Prognosis in Pancreatic Ductal Adenocarcinoma.
- Author
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Huang XY, Qin WT, Su QS, Qiu CC, Liu RC, Xie SS, Hu Y, and Zhu SY
- Subjects
- Aged, Biomarkers, Tumor genetics, Carcinoma, Pancreatic Ductal genetics, Carcinoma, Pancreatic Ductal metabolism, Databases, Genetic, Female, Humans, Male, Middle Aged, Neoplastic Stem Cells metabolism, Nomograms, Pancreatic Neoplasms genetics, Pancreatic Neoplasms metabolism, ROC Curve, Survival Rate, Transcriptome, Carcinoma, Pancreatic Ductal pathology, Neoplastic Stem Cells pathology, Pancreatic Neoplasms pathology
- Abstract
Objective: This study is aimed at identifying stemness-related genes in pancreatic ductal adenocarcinoma (PDAC)., Methods: The RNA-seq data of PADC patients were downloaded from The Cancer Genome Atlas (TCGA) and Genotype-Tissue Expression (GTEx) databases. The mRNA expression-based stemness index (mRNAsi) and epigenetically regulated mRNAsi (EREG-mRNAsi) of PADC patients were evaluated. The mRNAsi-related gene sets in PADC were identified by weighted gene coexpression network analysis (WGCNA). The key genes were further analyzed using functional enrichment analysis. The Kaplan-Meier survival analysis and the Cox proportional hazards model were used to evaluate the prognostic value of the key genes. Prognostic hub genes were used to establish nomograms. The receiver operating characteristic (ROC) curves, concordance index ( C -index), and calibration curves were used to assess the discrimination and accuracy of the nomogram. Finally, these results were validated in the Gene Expression Omnibus (GEO) database., Results: A total of 36 key genes related to mRNAsi were identified by WGCNA. A prognostic gene signature compromising seven genes (TPX2, ZWINT, UBE2C, CCNB2, CDK1, BUB1, and BIRC5) was established to predict the overall survival (OS) of PADC patients. The Cox regression analysis revealed that the risk score was an independent prognostic factor for PADC. Patients were then divided into the high-risk and low-risk groups. The ROC curves, C -index, and calibration curves indicated good performance of the prognostic signature in the TCGA and GEO datasets. Moreover, the nomogram incorporating clinical parameters showed better sensitivity and specificity for predicting the OS of PADC patients., Conclusion: The stemness-related prognostic model successfully predicted the OS of PADC patients and could be used for the treatment of PADC., Competing Interests: The authors declare that they have no conflicts of interest., (Copyright © 2021 Xiao-Yan Huang et al.)
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- 2021
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38. Polyethylene mesh knitted fabrics mulching the soil to mitigate China's haze: A potential source of PBDEs.
- Author
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Wang Y, Tan J, Li R, Jiang ZT, Tang SH, Wang L, and Liu RC
- Subjects
- China, Environmental Monitoring, Polyethylene, Soil, Halogenated Diphenyl Ethers analysis, Soil Pollutants analysis
- Abstract
The fate of polybrominated diphenyl ethers (PBDEs) from polyethylene mesh knitted fabrics (PMKFs) to mulched soil and nearby plants was studied. PBDEs in the soil sample collected from Tianjin University of Commerce in April 2019 increased significantly after 6 months of PMKF mulching owing to PMKFs as the main input source. The compositional profiles/congener patterns of the PBDEs in the soil and PMKFs became similar after 6 months. High correlations were found between ΣPBDEs in the soil and PMKFs in October 2019, with no significant correlation in April. Plants could take up, accumulate and biotransform PBDEs in contaminated soil. The uptake of BDE-209 by plants was the highest compared with other lesser brominated PBDE congeners, due to its higher log Kow value and molecular weight or size. BDE-47 taken up in the plant was biotransformed via hydroxylation. These results prove that the government's PMKF solution to haze is causing environmental problems in bare soil, i.e., PBDE pollution in both soil and nearby plants. The present study provides important pieces of evidence for government and policymakers, and it is recommended that one environmental problem is not solved by creating another., (Copyright © 2021 Elsevier Ltd. All rights reserved.)
- Published
- 2021
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39. Differential Effects of Exogenous Glomalin-Related Soil Proteins on Plant Growth of Trifoliate Orange Through Regulating Auxin Changes.
- Author
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Liu RC, Gao WQ, Srivastava AK, Zou YN, Kuča K, Hashem A, Abd Allah EF, and Wu QS
- Abstract
Multiple functions of glomalin released by arbuscular mycorrhizal fungi are well-recognized, whereas the role of exogenous glomalins including easily extractable glomalin-related soil protein (EE-GRSP) and difficultly extractable glomalin-related soil protein (DE-GRSP) is unexplored for plant responses. Our study was carried out to assess the effects of exogenous EE-GRSP and DE-GRSP at varying strengths on plant growth and chlorophyll concentration of trifoliate orange ( Poncirus trifoliata ) seedlings, along with changes in root nutrient acquisition, auxin content, auxin-related enzyme and transporter protein gene expression, and element contents of purified GRSP. Sixteen weeks later, exogenous GRSP displayed differential effects on plant growth (height, stem diameter, leaf number, and biomass production): the increase by EE-GRSP and the decrease by DE-GRSP. The best positive effect on plant growth occurred at exogenous EE-GRSP at ½ strength. Similarly, the GRSP application also differently affected total chlorophyll content, root morphology (total length, surface area, and volume), and root N, P, and K content: positive effect by EE-GRSP and negative effect by DE-GRSP. Exogenous EE-GRSP accumulated more indoleacetic acid (IAA) in roots, which was associated with the upregulated expression of root auxin synthetic enzyme genes ( PtTAA1, PtYUC3 , and PtYUC4 ) and auxin influx transporter protein genes ( PtLAX1, PtLAX2 , and PtLAX3 ). On the other hand, exogenous DE-GRSP inhibited root IAA and indolebutyric acid (IBA) content, associated with the downregulated expression of root PtTAA1, PtLAX1 , and PtLAX3 . Root IAA positively correlated with root PtTAA1, PtYUC3, PtYUC4, PtLAX1 , and PtLAX3 expression. Purified EE-GRSP and DE-GRSP showed similar element composition but varied in part element (C, O, P, Ca, Cu, Mn, Zn, Fe, and Mo) concentration. It concluded that exogenous GRSP triggered differential effects on growth response, and the effect was associated with the element content of pure GRSP and the change in auxins and root morphology. EE-GRSP displays a promise as a plant growth biostimulant in citriculture., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2021 Liu, Gao, Srivastava, Zou, Kuča, Hashem, Abd_Allah and Wu.)
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- 2021
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40. The Change in Fatty Acids and Sugars Reveals the Association between Trifoliate Orange and Endophytic Fungi.
- Author
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Meng LL, Liu RC, Yang L, Zou YN, Srivastava AK, Kuča K, Hashem A, Abd Allah EF, Giri B, and Wu QS
- Abstract
Endophytes have the ability to improve plant nutrition alongside their agronomic performance, among which arbuscular mycorrhizal fungi provide the most benefits to their host. Previously, we reported for the first time that an arbuscular mycorrhizal-like fungus Piriformospora indica had the ability to colonize roots of trifoliate orange ( Poncirus trifoliata ) and conferred positive effects on nutrient acquisition. Present study showed the changes in fatty acids and sugars to unravel the physiological and symbiotic association of trifoliate orange with P . indica and an arbuscular mycorrhizal fungus, Funneliformis mosseae singly or in combination. All the endophytic fungi collectively increased fructose, glucose, and sucrose content in leaves and roots, along with a relatively higher increase with P . indica inoculation than with F . mosseae alone or dual inoculation. Treatment with P . indica increased the concentration of part unsaturated fatty acids such as C18:3N6, C20:2, C20:3N6, C20:4N6, C20:3N3, C20:5N3, C22:1N9, and C24:1. Additionally, P . indica induced the increase in the concentration of part saturated fatty acids such as C6:0, C8:0, C13:0, C14:0, and C24:0. F . mosseae hardly changed the content of fatty acids, except for increase in C14:0 and C20:5N3. Double inoculation only reduced the C21:0, C10:0, C12:0, C18:3N3, and C18:1 content and increased the C20:5N3 content. These endophytic fungi up-regulated the root PtFAD2, PtFAD6, PtΔ9 , and PtΔ15 gene expression level, coupled with a higher expression of PtFAD2 and PtΔ9 by P . indica than by F . mosseae . It was concluded that P . indica exhibited a stronger response, for sugars and fatty acids, than F . mosseae on trifoliate orange. Such results also reveal the Pi (an in vitro culturable fungus) as a bio-stimulator applying to citriculture.
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- 2021
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41. Transcriptome-Wide Identification and Characterization of the JAZ Gene Family in Mentha canadensis L.
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Xu DB, Ma YN, Qin TF, Tang WL, Qi XW, Wang X, Liu RC, Fang HL, Chen ZQ, Liang CY, and Wu W
- Subjects
- Amino Acid Sequence, DNA-Binding Proteins genetics, Gene Expression Regulation, Plant, Mentha genetics, Mentha growth & development, Multigene Family, Plant Proteins genetics, Sequence Homology, DNA-Binding Proteins metabolism, Mentha metabolism, Phylogeny, Plant Proteins metabolism, Transcriptome
- Abstract
Jasmonate ZIM-domain (JAZ) proteins are the crucial transcriptional repressors in the jasmonic acid (JA) signaling process, and they play pervasive roles in plant development, defense, and plant specialized metabolism. Although numerous JAZ gene families have been discovered across several plants, our knowledge about the JAZ gene family remains limited in the economically and medicinally important Chinese herb Mentha canadensis L. Here, seven non-redundant JAZ genes named McJAZ1 - McJAZ7 were identified from our reported M. canadensis transcriptome data. Structural, amino acid composition, and phylogenetic analysis showed that seven McJAZ proteins contained the typical zinc-finger inflorescence meristem (ZIM) domain and JA-associated (Jas) domain as conserved as those in other plants, and they were clustered into four groups (A-D) and distributed into five subgroups (A1, A2, B1, B2, and D). Quantitative real-time PCR (qRT-PCR) analysis showed that seven McJAZ genes displayed differential expression patterns in M. canadensis tissues, and preferentially expressed in flowers. Furthermore, the McJAZ genes expression was differentially induced after Methyl jasmonate (MeJA) treatment, and their transcripts were variable and up- or down-regulated under abscisic acid (ABA), drought, and salt treatments. Subcellular localization analysis revealed that McJAZ proteins are localized in the nucleus or cytoplasm. Yeast two-hybrid (Y2H) assays demonstrated that McJAZ1-5 interacted with McCOI1a, a homolog of Arabidopsis JA receptor AtCOI1, in a coronatine-dependent manner, and most of McJAZ proteins could also form homo- or heterodimers. This present study provides valuable basis for functional analysis and exploitation of the potential candidate McJAZ genes for developing efficient strategies for genetic improvement of M. canadensis .
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- 2021
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42. Contrast-enhanced ultrasound for the preoperative assessment of laryngeal carcinoma: a preliminary study.
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Hu Q, Zhu SY, Liu RC, Zheng HY, Lun HM, Wei HM, and Weng JJ
- Subjects
- Adult, Aged, Aged, 80 and over, Humans, Laryngeal Neoplasms pathology, Laryngeal Neoplasms surgery, Larynx diagnostic imaging, Larynx pathology, Larynx surgery, Male, Middle Aged, Neoplasm Staging, Tomography, X-Ray Computed, Ultrasonography methods, Laryngeal Neoplasms diagnostic imaging
- Abstract
Background: Contrast-enhanced ultrasound (CEUS) is considered an attractive imaging technique to evaluate tumor microcirculation. However, the validity of CEUS for assessing laryngeal carcinoma is unclear., Purpose: To compare the performance of CEUS with conventional US and contrast-enhanced computed tomography (CECT) in the diagnosis and preoperative T-staging of laryngeal carcinoma., Material and Methods: Forty-one consecutive patients with laryngeal carcinoma underwent conventional high-frequency US, CEUS, and CECT before surgery. The CEUS characteristics of laryngeal carcinoma were recorded. The imaging findings of CEUS and conventional US were compared with CECT findings and the postoperative pathological examination., Results: CEUS showed hyperenhancement in 38 cases and isoenhancement in three cases. Homogeneous distribution of contrast agent was found in 20 cases and heterogeneous distribution in 21 cases, of which 16 cases showed local perfusion defects. In the enhanced phase, rapid entry was observed in 37 cases, synchronous entry was observed in two cases, and slow entry was observed in two cases. Rapid exit was observed in 25 cases and slow exit was observed in 16 cases. The pretherapeutic T-staging accuracy was not significantly different between conventional US, CEUS, and CECT ( P ≥ 0.500). A high sensitivity and specificity were achieved by CEUS in the evaluation of involvement of thyroid cartilage., Conclusion: Compared with conventional US and CECT, CEUS has a reliable initial T-staging accuracy and diagnostic properties for detecting laryngeal cartilage invasion.
- Published
- 2021
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43. Design, synthesis and in vitro antitumor evaluation of novel pyrazole-benzimidazole derivatives.
- Author
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Ren B, Liu RC, Ji K, Tang JJ, and Gao JM
- Subjects
- Antineoplastic Agents chemical synthesis, Antineoplastic Agents chemistry, Benzimidazoles chemistry, Cell Line, Tumor, Cell Proliferation drug effects, Dose-Response Relationship, Drug, Drug Screening Assays, Antitumor, Humans, Molecular Structure, Pyrazoles chemistry, Structure-Activity Relationship, Antineoplastic Agents pharmacology, Benzimidazoles pharmacology, Drug Design, Pyrazoles pharmacology
- Abstract
A series of novel pyrazole-benzimidazole derivatives (6-42) have been designed, synthesized and evaluated for their in vitro antiproliferative activity against the HCT116, MCF-7 and Huh-7 cell lines. Among them, compounds 17, 26 and 35 showed significant antiproliferative activity against HCT116 cell lines with the IC
50 values of 4.33, 5.15 and 4.84 μM, respectively. Moreover, fluorescent staining studies showed compound 17 could induce cancer cells apoptosis. The flow cytometry assay revealed that compound 17 could induce cell cycle arrest at G0/G1 phase. All in all, these consequences suggest that pyrazole-benzimidazole derivatives could serve as promising compounds for further research to develop novel and highly potent cancer therapy agents., (Copyright © 2021 Elsevier Ltd. All rights reserved.)- Published
- 2021
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44. Electroacupuncture improves learning and memory functions in a rat cerebral ischemia/reperfusion injury model through PI3K/Akt signaling pathway activation.
- Author
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Wang HL, Liu FL, Li RQ, Wan MY, Li JY, Shi J, Wu ML, Chen JH, Sun WJ, Feng HX, Zhao W, Huang J, Liu RC, Hao WX, and Feng XD
- Abstract
Electroacupuncture has been widely used to treat cognitive impairment after cerebral ischemia, but the underlying mechanism has not yet been fully elucidated. Studies have shown that autophagy plays an important role in the formation and development of cognitive impairment, and the phosphoinositide 3-kinase (PI3K)/Akt signaling pathway plays an important role in autophagy regulation. To investigate the role played by the PI3K/Akt signaling pathway in the electroacupuncture treatment of cerebral ischemia/reperfusion rat models, we first established a rat model of cerebral ischemia/reperfusion through the occlusion of the middle cerebral artery using the suture method. Starting at 2 hours after modeling, electroacupuncture was delivered at the Shenting (GV24) and Baihui (GV20) acupoints, with a dilatational wave (1-20 Hz frequency, 2 mA intensity, 6 V peak voltage), for 30 minutes/day over 8 consecutive days. Our results showed that electroacupuncture reduced the infarct volume in a rat model of cerebral ischemia/reperfusion injury, increased the mRNA expression levels of the PI3K/Akt signaling pathway-related factors Beclin-1, mammalian target of rapamycin (mTOR), and PI3K, increased the protein expression levels of phosphorylated Akt, Beclin-1, PI3K, and mTOR in the ischemic cerebral cortex, and simultaneously reduced p53 mRNA and protein expression levels. In the Morris water maze test, the latency to find the hidden platform was significantly shortened among rats subjected to electroacupuncture stimulation compared with rats without electroacupuncture stimulation. In the spatial probe test, the number of times that a rat crossed the target quadrant was increased in rats subjected to electroacupuncture stimulation compared with rats without electroacupuncture stimulation. Electroacupuncture stimulation applied to the Shenting (GV24) and Baihui (GV20) acupoints activated the PI3K/Akt signaling pathway and improved rat learning and memory impairment. This study was approved by the Animal Ethics Committee of the First Affiliated Hospital of Henan University of Traditional Chinese Medicine, China (approval No. 8150150901) on March 10, 2016., Competing Interests: None
- Published
- 2021
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45. Waddell (Nonorganic) Signs and Their Association With Interventional Treatment Outcomes for Low Back Pain.
- Author
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Cohen SP, Doshi TL, Kurihara C, Dolomisiewicz E, Liu RC, Dawson TC, Hager N, Durbhakula S, Verdun AV, Hodgson JA, and Pasquina PF
- Subjects
- Adult, Aged, Female, Humans, Injections, Epidural, Low Back Pain diagnosis, Male, Middle Aged, Military Medicine, Pain Measurement, Predictive Value of Tests, Prospective Studies, Risk Assessment, Risk Factors, Steroids administration & dosage, Steroids adverse effects, Treatment Failure, United States, Decision Support Techniques, Low Back Pain therapy, Nerve Block adverse effects, Pain Management adverse effects, Radiofrequency Ablation adverse effects, Steroids therapeutic use
- Abstract
Background: The rising use of injections to treat low back pain (LBP) has led to efforts to improve selection. Nonorganic (Waddell) signs have been shown to portend treatment failure for surgery and other therapies but have not been studied for minimally invasive interventions., Methods: We prospectively evaluated the association between Waddell signs and treatment outcome in 3 cohorts: epidural steroid injections (ESI) for leg pain and sacroiliac joint (SIJ) injections and facet interventions for LBP. Categories of Waddell signs included nonanatomic tenderness, pain during sham stimulation, discrepancy in physical examination, overreaction, and regional disturbances divulging from neuroanatomy. The primary outcome was change in patient-reported "average" numerical rating scale for pain intensity (average NRS-PI), modeled as a function of the number of Waddell signs using simple linear regression. Secondary outcomes included a binary indicator of treatment response. We conducted secondary and sensitivity analyses to account for potential confounders., Results: We enrolled 318 patients: 152 in the ESI cohort, 102 in the facet cohort, and 64 in the SIJ cohort, having sufficient data for primary analysis on 308 patients. Among these, 62% (n = 192) had no Waddell signs, 18% (n = 54) had 1 sign, 11% (n = 33) had 2, 5% (n = 16) had 3, 2% (n = 7) had 4, and about 2% (n = 6) had all 5 signs. The mean change in average NRS-PI in each of these 6 groups was -1.6 ± 2.6, -1.1 ± 2.7, -1.5 ± 2.5, -1.6 ± 2.6, -1 ± 1.5, and 0.7 ± 2.1, respectively, and their corresponding treatment failure rates were 54% (102 of 192), 67% (36 of 54), 70% (23 of 33), 75% (12 of 16), 71% (5 of 7), and 83% (5 of 6). In the primary analysis, an increasing number of Waddell signs were not associated with a significant decrease in average NRS-PI (coefficient [Coef] = 0.19; 95% confidence interval [CI], -0.43 to 0.05; P = .12). A higher number of Waddell signs were associated with treatment failure, with a 1.35 increased odds of treatment failure per cumulative number of signs (P = .008)., Conclusions: Whereas this study found no consistent relationship between Waddell signs and decreased mean pain scores, a significant relationship between the number of Waddell signs and treatment failure was observed., Competing Interests: Conflicts of Interest: See Disclosures at the end of the article.
- Published
- 2021
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46. Complete mitochondrial genome of the edible Basidiomycete mushroom Thelephora aurantiotincta (Aphyllophorales: Thelephoraceae) from China.
- Author
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Chen XH, Meng WW, Liu RC, Bai YX, Xu HQ, Ding R, and Shao SC
- Abstract
The complete mitochondrial genome of Thelephora aurantiotincta , an edible Basidiomycete mushroom species with ecological and economic value is reported in this study. The whole genome is a circular molecule 50,672 bp in length and encodes 42 genes as follows: 15 protein-coding genes, two rRNA genes and 25 tRNA genes. The A, T, C, G contents in the genome are 35.60%, 35.31%, 13.89%, and 15.20%, respectively. Phylogenetic analysis revealed a close relationship between T. aurantiotincta and T. ganbajun . This is the first complete mitochondrial genome for T. aurantiotincta that will be useful for providing basic genetic information for this important species., Competing Interests: No potential competing interest was reported by the authors., (© 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.)
- Published
- 2021
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47. Using the pup retrieval instinct as reinforcement for efficient auditory learning in mice.
- Author
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Besosa CI, Dunlap AG, Lu K, and Liu RC
- Abstract
There is growing interest in the mechanisms for natural sensory learning in pro-social contexts. Studies using a maternal model of social behavior in the mouse have provided new insight into the auditory processing of behaviorally relevant pup vocalizations, which are used as communication signals to elicit pup retrieval behavior by adult females. Whether neural and behavioral plasticity in response to these vocalizations reflect auditory associative learning linking the sounds to pups, versus simply a change in maternal responsiveness to evolved vocal signals, remains an open question. Here we describe a T-maze paradigm to track auditory learning as we pair an initially neutral, non-ethological stimulus with delivery of a pup for retrieval, which is intrinsically reinforcing for rodents.•Training is rapid and completely appetitive.•Over a period of 7 × 50-minute daily training sessions, animals increasingly use the sound to guide their arm choice for pup retrieval, with an increase in performance from chance to an average of ~80% on day 7.•This pairing method establishes a newly-formed sensory association using a natural maternal behavioral response, and lays a solid foundation for studies into the neurochemical and circuit mechanisms that mediate auditory associative learning in natural social contexts., Competing Interests: X The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2020 The Author(s).)
- Published
- 2020
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48. Parent TRAP: Discriminating Infant Cries Requires a Higher-Order Auditory Association Area in Mice.
- Author
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Liu RC, Anandakumar DB, and Lu K
- Subjects
- Animals, Humans, Infant, Mice, Neurons, Ultrasonics, Auditory Cortex
- Abstract
A circuit understanding of how perception links to response requires integrating neural connectivity, activity, and behavior. In this issue of Neuron, Tasaka et al. (2020) target neurons activated by ultrasonic pup vocalizations and discover a functional synaptic network embedded through acoustically selective TeA neurons that help link the calls to a discriminative maternal behavioral response., (Copyright © 2020 Elsevier Inc. All rights reserved.)
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- 2020
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49. Becoming a better parent: Mice learn sounds that improve a stereotyped maternal behavior.
- Author
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Dunlap AG, Besosa C, Pascual LM, Chong KK, Walum H, Kacsoh DB, Tankeu BB, Lu K, and Liu RC
- Subjects
- Acoustic Stimulation, Animals, Animals, Newborn, Auditory Cortex physiology, Behavior, Animal physiology, Conditioning, Operant physiology, Female, Humans, Maze Learning, Mice, Mice, Inbred CBA, Motivation, Neuronal Plasticity physiology, Social Behavior, Sound Localization physiology, Vocalization, Animal physiology, Learning physiology, Maternal Behavior physiology, Stereotyped Behavior physiology
- Abstract
While mothering is often instinctive and stereotyped in species-specific ways, evolution can favor genetically "open" behavior programs that allow experience to shape infant care. Among experience-dependent maternal behavioral mechanisms, sensory learning about infants has been hard to separate from motivational changes arising from sensitization with infants. We developed a paradigm in which sensory learning of an infant-associated cue improves a stereotypical maternal behavior in female mice. Mice instinctively employed a spatial memory-based strategy when engaged repetitively in a pup search and retrieval task. However, by playing a sound from a T-maze arm to signal where a pup will be delivered for retrieval, mice learned within 7 days and retained for at least 2 weeks the ability to use this specific cue to guide a more efficient search strategy. The motivation to retrieve pups also increased with learning on average, but their correlation did not explain performance at the trial level. Bilaterally silencing auditory cortical activity significantly impaired the utilization of new strategy without changing the motivation to retrieve pups. Finally, motherhood as compared to infant-care experience alone accelerated how quickly the new sensory-based strategy was acquired, suggesting a role for the maternal hormonal state. By rigorously establishing that newly formed sensory associations can improve the performance of a natural maternal behavior, this work facilitates future studies into the neurochemical and circuit mechanisms that mediate novel sensory learning in the maternal context, as well as more learning-based mechanisms of parental behavior in rodents., (Copyright © 2020 The Authors. Published by Elsevier Inc. All rights reserved.)
- Published
- 2020
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50. Experience-Dependent Coding of Time-Dependent Frequency Trajectories by Off Responses in Secondary Auditory Cortex.
- Author
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Chong KK, Anandakumar DB, Dunlap AG, Kacsoh DB, and Liu RC
- Subjects
- Age Factors, Animals, Electrodes, Implanted, Female, Mice, Mice, Inbred CBA, Random Allocation, Acoustic Stimulation methods, Action Potentials physiology, Auditory Cortex physiology, Pitch Perception physiology, Reaction Time physiology
- Abstract
Time-dependent frequency trajectories are an inherent feature of many behaviorally relevant sounds, such as species-specific vocalizations. Dynamic frequency trajectories, even in short sounds, often convey meaningful information, which may be used to differentiate sound categories. However, it is not clear what and where neural responses in the auditory cortical pathway are critical for conveying information about behaviorally relevant frequency trajectories, and how these responses change with experience. Here, we uncover tuning to subtle variations in frequency trajectories in auditory cortex of female mice. We found that auditory cortical responses could be modulated by variations in a pure tone trajectory as small as 1/24th of an octave, comparable to what has been reported in primates. In particular, late spiking after the end of a sound stimulus was more often sensitive to the sound's subtle frequency variation compared with spiking during the sound. Such "Off" responses in the adult A2, but not those in core auditory cortex, were plastic in a way that may enhance the representation of a newly acquired, behaviorally relevant sound category. We illustrate this with the maternal mouse paradigm for natural vocalization learning. By using an ethologically inspired paradigm to drive auditory responses in higher-order neurons, our results demonstrate that mouse auditory cortex can track fine frequency changes, which allows A2 Off responses in particular to better respond to pitch trajectories that distinguish behaviorally relevant, natural sound categories. SIGNIFICANCE STATEMENT A whistle's pitch conveys meaning to its listener, as when dogs learn that distinct pitch trajectories whistled by their owner differentiate specific commands. Many species use pitch trajectories in their own vocalizations to distinguish sound categories, such as in human languages, such as Mandarin. How and where auditory neural activity encodes these pitch trajectories as their meaning is learned but not well understood, especially for short-duration sounds. We studied this in mice, where infants use ultrasonic whistles to communicate to adults. We found that late neural firing after a sound ends can be tuned to how the pitch changes in time, and that this response in a secondary auditory cortical field changes with experience to acquire a pitch change's meaning., (Copyright © 2020 Chong et al.)
- Published
- 2020
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