Organizing behavior in time is a fundamental process that is highly conserved across species. Here we study the neural basis of timing processes. First, we found that rodents had a burst of stimulus-triggered 4 Hz oscillations in the medial frontal cortex (MFC) during interval timing tasks. Second, rodents with focally disrupted MFC D1 dopamine receptor (D1DR) signaling had impaired interval timing performance and weaker stimulus-triggered oscillations. Prior work has demonstrated that MFC neurons ramp during interval timing, suggesting that they underlie temporal integration. We found that MFC D1DR blockade strongly attenuated ramping activity of MFC neurons that correlated with behavior. These macro- and micro-level phenomena were linked, as we observed that MFC neurons with strong ramping activity tended to be coherent with stimulus-triggered 4 Hz oscillations, and this relationship was diminished with MFC D1DR blockade. These data provide evidence demonstrating how D1DR signaling controls the temporal organization of mammalian behavior.
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http://dx.doi.org/10.1523/JNEUROSCI.2772-14.2014 | DOI Listing |
BMC Pregnancy Childbirth
January 2025
Jiaxing Maternity and Child Health Care Hospital, Jiaxing, Zhejiang, 314001, China.
Background: Intrahepatic cholestasis of pregnancy (ICP) is a liver disorder that occurs in the second and third trimesters of pregnancy and is associated with a significant risk of fetal complications, including premature birth and fetal death. In clinical practice, the diagnosis of ICP is predominantly based on the presence of pruritus in pregnant women and elevated serum total bile acid. However, this approach may result in missed or delayed diagnoses.
View Article and Find Full Text PDFSci Rep
January 2025
Department of Anaesthesia, Alex Ekwueme Federal University Teaching Hospital Abakaliki (AEFUTHA), Abakaliki, Ebonyi State, Nigeria.
Optimal (timely or cumulative age-appropriate) routine childhood immunization coverage (the receipt of every recommended vaccine dose at the recommended age and time-interval between doses) will enhance optimal protection against vaccine-preventable infectious diseases (VPDs) which have been causing significant morbidity and mortality and recurring outbreaks among children younger than five years. This study evaluated optimal routine childhood immunization coverage, and the predictors, in Ebonyi state, Nigeria. This study was a baseline cross-sectional household survey within a cluster-randomised controlled trial and was conducted from July 2 to 16, 2022 among consenting mother-child pairs, in which the children were aged 5-23 months (subdivided into 5-11 and 12-23 months), in 16 randomly selected geographical clusters where the primary health care (PHC) facilities were providing maternal and child health care services including weekly routine childhood immunization.
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January 2025
Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI, USA.
Long-lived iteroparous organisms vary resource expenditures toward migration and reproduction in response to individual physical factors and conspecific interactions, which can affect future reproductive timing and interval. Reproductive actions can lead to trade-offs associated with allocations to current vs. future reproduction, including longer reproductive interval, require additional study.
View Article and Find Full Text PDFAm J Public Health
January 2025
Alexia Couture, A. Danielle Iuliano, Ryan Threlkel, Matthew Gilmer, Alissa O'Halloran, Dawud Ujamaa, Matthew Biggerstaff, and Carrie Reed are with the National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA. Howard H. Chang is with the Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, GA.
To develop a method leveraging hospital-based surveillance to estimate influenza-related hospitalizations by state, age, and month as a means of enhancing current US influenza burden estimation efforts. Using data from the Influenza Hospitalization Surveillance Network (FluSurv-NET), we extrapolated monthly FluSurv-NET hospitalization rates after adjusting for testing practices and diagnostic test sensitivities to non-FluSurv-NET states. We used a Poisson zero-inflated model with an overdispersion parameter within the Bayesian hierarchical framework and accounted for uncertainty and variability between states and across time.
View Article and Find Full Text PDFJ Int Med Res
January 2025
Department of Gastroenterology and Hepatology, Henry Ford Hospital, Detroit, MI, United States.
Objectives: Central nervous system complications of acute pancreatitis (AP) can result in cerebral edema (CE). We assessed the risk of serious outcomes and health care features associated with CE in patients hospitalized with AP.
Methods: We conducted a retrospective cohort study using the National Inpatient Sample database.
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