User profiles for Antti Haapalinna

Antti Haapalinna

Vice President R&D,Head of External Research and Partnering
Verified email at orionpharma.com
Cited by 3749

Pharmacological Properties, Central Nervous System Effects, and Potential Therapeutic Applications of Atipamezole, a Selective α2‐Adrenoceptor Antagonist

A Pertovaara, A Haapalinna, J Sirviö… - CNS drug …, 2005 - Wiley Online Library
Atipamezole is an α 2 ‐adrenoceptor antagonist with an imidazole structure. Receptor binding
studies indicate that its affinity for α 2 ‐adrenoceptors and its α 2 /α 1 selectivity ratio are …

Adrenergic α2C-receptors modulate the acoustic startle reflex, prepulse inhibition, and aggression in mice

J Sallinen, A Haapalinna, T Viitamaa… - Journal of …, 1998 - Soc Neuroscience
Studies on animal models of stress, anxiety, aggression, and sensorimotor gating have
linked specific monoamine neurotransmitter abnormalities to the cognitive and behavioral …

Neuroprotective effects of dexmedetomidine in the gerbil hippocampus after transient global ischemia

…, J Pokorny, R Miettinen, A Haapalinna… - The Journal of the …, 1997 - pubs.asahq.org
Background Cerebral ischemia induces a massive release of norepinephrine associated with
neuronal death in the brain. It has been demonstrated that alpha2-adrenoceptor agonists …

Neuroprotection by the α2-adrenoceptor agonist, dexmedetomidine, in rat focal cerebral ischemia

…, J Koistinaho, R Kauppinen, A Haapalinna… - European journal of …, 1999 - Elsevier
The present study was undertaken to explore the possible neuroprotective effect of the selective
α 2 -adrenoceptor agonist, dexmedetomidine in a rat model of focal cerebral ischemia. …

Genetic alteration of α2C-adrenoceptor expression in mice: influence on locomotor, hypothermic, and neurochemical effects of dexmedetomidine, a subtype …

J Sallinen, RE Link, A Haapalinna, T Viitamaa… - Molecular …, 1997 - ASPET
α 2 -Adrenergic receptors (α 2 -ARs) regulate many physiological functions and are targets
for clinically important antihypertensive and anesthetic agents. Three human and mouse …

Behavioral effects of the α2-adrenoceptor antagonist, atipamezole, after focal cerebral ischemia in rats

…, S Rantakömi, A Härkönen, A Haapalinna… - European journal of …, 2000 - Elsevier
The present study characterized the behavioral effects of the selective α 2 -adrenoceptor
antagonist, atipamezole, in a rat model of focal cerebral ischemia. Atipamezole (1 mg/kg, sc) or …

Evaluation of the effects of a specific α2-adrenoceptor antagonist, atipamezole, on α1-and α2-adrenoceptor subtype binding, brain neurochemistry and behaviour in …

A Haapalinna, T Viitamaa, E MacDonald… - Naunyn-Schmiedeberg's …, 1997 - Springer
In the present study we evaluated the α 1 - and α 2 -adrenoceptor subtype binding, central α
2 -adrenoceptor antagonist potency, as well as effects on brain neurochemistry and …

Pharmacological Characterisation of a Structurally Novel α2C ‐Adrenoceptor Antagonist ORM‐10921 and its Effects in Neuropsychiatric Models

…, R Virtanen, J Sirviö, A Haapalinna - Basic & clinical …, 2013 - Wiley Online Library
The α 2 ‐adrenoceptors (ARs) are important modulators of a wide array of physiological
responses. As only a few selective compounds for the three α 2 ‐AR subtypes (α 2A , α 2B and α …

α‐Adrenoceptor‐Mediated Modulation of 5‐HT2 Receptor Agonist Induced Impulsive Responding in a 5‐Choice Serial Reaction Time Task

T Koskinen, A Haapalinna, J Sirvi - Pharmacology & toxicology, 2003 - Wiley Online Library
The activation of 5‐HT 2A receptors has been shown to enhance the probability of premature
responding, regarded as a form of motor impulsive behaviour. At the behavioural level, the …

Stimulation of alpha-1 adrenergic receptors facilitates spatial learning in rats

T Puumala, S Greijus, K Narinen, A Haapalinna… - European …, 1998 - Elsevier
The present experiments were designed to examine the effects of alpha-1 adrenergic stimulation
and inhibition on memory encoding and to investigate whether the alpha-1 adrenergic …