Article
Clinical Neurology
Jung-Chieh Du, Man-Hsin Chang, Chen-Jiun Yeh, Ming Tatt Lee, Hsin-Jung Lee, Shu-Hui Chuang, Lih-Chu Chiou
Summary: The SLITRK1 gene mutation and loss of striatal cholinergic interneurons (ChIs) are associated with Tourette syndrome (TS). In a mouse model, Slitrk1-KD mice exhibited TS-like tic behaviors, impaired prepulse inhibition, and delayed sensorimotor response. These characteristics were correlated with lower levels of striatal Slitrk1 protein, fewer Slitrk1-containing ChIs, and fewer activated ChIs in Slitrk1-KD mice.
ANNALS OF NEUROLOGY
(2023)
Article
Biochemistry & Molecular Biology
Subramaniam Jayanthi, Bruce Ladenheim, Patricia Sullivan, Michael T. McCoy, Irina N. Krasnova, David S. Goldstein, Jean Lud Cadet
Summary: Perturbations in striatal dopamine homeostasis may contribute to METH use disorder. Rats exposed to footshocks after long-term METH intake showed decreased intake when given a DA D1 receptor antagonist. Compulsive METH takers exhibited abnormal DA metabolism and decreased protein levels. These findings are consistent with studies on human METH users.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Pharmacology & Pharmacy
Jan H. Voss, Haneen Al-Hroub, Robin Gedschold, Jennifer M. Dietrich, Evelyn Gaffal, Marieta Toma, Stefan Kehraus, Gabriele M. Koenig, Peter Brust, Bernd K. Fleischmann, Daniela Wenzel, Winnie Deuther-Conrad, Christa E. Mueller
Summary: G protein is identified as a potential drug target for treating complex diseases. The development of specific radiotracers allows for disease diagnosis and research.
Article
Biochemistry & Molecular Biology
Edem K. Onyameh, Barbara A. Bricker, Suresh V. K. Eyunni, Chandrashekhar Voshavar, Uma M. Gonela, Edward Ofori, Andrea Jenkins, Seth Y. Ablordeppey
Summary: This study aims to investigate the relationship between antipsychotic drugs and their binding affinities at dopamine and serotonin receptor subtypes to potentially develop new drugs with enhanced efficacy. By synthesizing structurally modified compounds, a new analog with moderate binding affinity was identified and demonstrated antipsychotic-like activity in preliminary tests.
BIOORGANIC & MEDICINAL CHEMISTRY
(2021)
Article
Neurosciences
Tuulia Malen, Tomi Karjalainen, Janne Isojaervi, Aki Vehtari, Paul-Christian Buerkner, Vesa Putkinen, Valtteri Kaasinen, Jarmo Hietala, Pirjo Nuutila, Juha Rinne, Lauri Nummenmaa
Summary: This study investigated the influence of age, sex, BMI, cerebral hemisphere, and regional volume on striatal D2R availability in the human brain using a large historical dataset. The results showed that D2R availability decreased with age and was higher in females than males. BMI was weakly associated with D2R availability. The observed effects were independent of regional volumes and were validated using different spatial normalization methods. These findings contribute to our understanding of the vulnerability of neurological and psychiatric conditions involving altered D2R expression.
Article
Neurosciences
K. H. Binda, T. P. Lillethorup, C. C. Real, S. L. Baerentzen, M. N. Nielsen, D. Orlowski, D. J. Brooks, M. Chacur, A. M. Landau
Summary: Exercise in a parkinsonian rat model was found to increase synaptic density, reduce neuroinflammation, and raise the nociceptive threshold.
EXPERIMENTAL NEUROLOGY
(2021)
Review
Neurosciences
Antonio Verduzco-Mendoza, Paul Carrillo-Mora, Alberto Avila-Luna, Arturo Galvez-Rosas, Adriana Olmos-Hernandez, Daniel Mota-Rojas, Antonio Bueno-Nava
Summary: Recovery after TBI is influenced by various factors, including the biological and physical characteristics of patients, types of drugs used, and clinical indications. Dopaminergic drugs are used in clinical practice to facilitate recovery, but the mechanisms of action have not been fully clarified.
FRONTIERS IN NEUROSCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Martina Di Bartolomeo, Tibor Stark, Serena Di Martino, Fabio Arturo Iannotti, Jana Ruda-Kucerova, Giovanni Luca Romano, Martin Kuchar, Samuele Laudani, Petr Palivec, Fabiana Piscitelli, Carsten T. Wotjak, Claudio Bucolo, Filippo Drago, Vincenzo Di Marzo, Claudio D'Addario, Vincenzo Micale
Summary: Adolescent exposure to cannabinoids, such as THC, may increase the risk of psychosis in individuals exposed to perinatal insult. In this study, the researchers examined the effects of peripubertal THC exposure on rats that were also exposed to prenatal methylazoxymethanol acetate (MAM) or perinatal THC (pTHC). They found that the rats exposed to MAM or pTHC exhibited adult phenotypes relevant to schizophrenia, including social withdrawal and cognitive impairment. The researchers also observed changes in gene expression and DNA methylation, suggesting potential molecular mechanisms underlying these effects.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Review
Clinical Neurology
Valtteri Kaasinen, Tero Vahlberg, A. Jon Stoessl, Antonio P. Strafella, Angelo Antonini
Summary: This study conducted a systematic review and meta-analysis on the expression of dopamine receptors in PD, PSP, and MSA, revealing differences in binding values of dopamine receptors among patients with different diseases.
MOVEMENT DISORDERS
(2021)
Article
Multidisciplinary Sciences
Garrett Salzman, Jocelyn Kim, Guillermo Horga, Kenneth Wengler
Summary: The dopaminergic system is crucial for healthy cognition and neuropsychiatric disorders, and neuromelanin-sensitive MRI is a useful method for measuring neuromelanin in dopaminergic neurons. However, challenges include limited field-of-view and lack of standardized protocols for data acquisition.
JOVE-JOURNAL OF VISUALIZED EXPERIMENTS
(2021)
Article
Multidisciplinary Sciences
Leiwen Mao, Yujie Han, Qi-Wei Zhang, Yang Tian
Summary: The researchers developed a small molecular fluorescent probe that can specifically respond to norepinephrine (NE) on a 100-ms timescale, providing high spatiotemporal resolution for monitoring NE dynamics in living systems. The probe utilizes a dual acceleration mechanism of molecular-folding and water-bridging to enhance reaction kinetics. It successfully captured the fast fluctuation of NE levels at neuronal cytomembranes within 2s and revealed a correlation between downregulated NE levels and Alzheimer's disease pathology and antioxidant therapy through two-photon fluorescence imaging of acute brain tissue slices.
NATURE COMMUNICATIONS
(2023)
Article
Pharmacology & Pharmacy
Jin Zhang, Xiaobing Wang, Rick E. Bernardi, Jun Ju, Shoupeng Wei, Zhiting Gong
Summary: This study found that activation of AMPA receptors in the lateral habenula can reduce anxiety-like behaviors and increase dopamine and serotonin levels in the basolateral amygdala. Conversely, blocking AMPA receptors in the LHb may induce anxiety-like effects and decrease dopamine and serotonin levels in the BLA.
FRONTIERS IN PHARMACOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Javad Khodaii, Yoshiyuki Nomura, Natalie Hong Siu Chang, Dean F. Wong, Arne Moller, Albert Gjedde
Summary: The study explores the age-related changes of dopamine D-2/3 receptor availability in different brain regions. The results show that the binding potential of the receptors differs in striatal and extrastriatal regions, with an inverted U-shaped age-dependent pattern. The decline of receptor availability with age is most significant in posterior cortices and least significant in the caudate nucleus.
NEUROCHEMICAL RESEARCH
(2023)
Article
Neurosciences
Savannah Tollefson, Clara Stoughton, Michael L. Himes, Kaylynn E. Mckinney, Scott Mason, Roberto Ciccocioppo, Rajesh Narendran
Summary: This study investigated the relationship between nociceptin opioid peptide receptor (NOP) and relapse to alcohol in treatment-seeking individuals with alcohol use disorder (AUD). The results showed that individuals with AUD who drank heavily before the study had lower levels of NOP, which were also negatively correlated with drinking frequency and quantity. Individuals with AUD who relapsed had lower levels of NOP compared to those who abstained for 12 weeks. The study highlights the potential of investigating NOP-targeted medications for preventing relapse in individuals with AUD.
BIOLOGICAL PSYCHIATRY
(2023)
Article
Biochemistry & Molecular Biology
Yann S. Mineur, Tenna N. Mose, Laura Vanopdenbosch, Ian M. Etherington, Chika Ogbejesi, Ashraful Islam, Cristiana M. Pineda, Richard B. Crouse, Wenliang Zhou, David C. Thompson, Matthew P. Bentham, Marina R. Picciotto
Summary: Acetylcholine (ACh) levels are elevated in depressed individuals. Blocking ACh receptors can have antidepressant effects and decrease stress-related behaviors. ACh levels increase in response to stress, while blocking the enzyme that degrades ACh induces depression-like symptoms. Cholinergic inputs from the medial septum/diagonal bands of Broca (MSDBB) or ChAT-positive neurons intrinsic to the hippocampus mediate stress-related behaviors in mice.
MOLECULAR PSYCHIATRY
(2022)