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Article: [Medication for Neurogenic Orthostatic Hypotension].

Asahina, Masato

Brain and nerve = Shinkei kenkyu no shinpo

2023 Volume 75, Issue 5, Page(s) 631–636

Abstract: Orthostatic hypotension is a phenomenon characterized by reduction in blood pressure secondary to the inability to adapt to changes in blood volume distribution (pooling of blood in the lower extremities) observed when standing from a seated or supine ... ...

Abstract	Orthostatic hypotension is a phenomenon characterized by reduction in blood pressure secondary to the inability to adapt to changes in blood volume distribution (pooling of blood in the lower extremities) observed when standing from a seated or supine position. Orthostatic hypotension is classified into neurogenic and non-neurogenic types. Neurogenic orthostatic hypotension due to autonomic failure may occur in most neurological diseases and is a major concern encountered in daily practice. In this review, I present an overview of the pathophysiology and diagnosis of neurogenic orthostatic hypotension and describe the therapeutic strategies and characteristics of drugs used for this condition.
MeSH term(s)	Humans ; Hypotension, Orthostatic/drug therapy ; Hypotension, Orthostatic/diagnosis ; Nervous System Diseases ; Blood Pressure
Language	Japanese
Publishing date	2023-05-17
Publishing country	Japan
Document type	Review ; English Abstract ; Journal Article
ZDB-ID	390389-8
ISSN	1344-8129 ; 1881-6096 ; 0006-8969
ISSN (online)	1344-8129
ISSN	1881-6096 ; 0006-8969
DOI	10.11477/mf.1416202389
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Article: Reactivity of observers' facial skin blood flow depending on others' facial expressions and blushing.

Ishikawa, Naoki / Asahina, Masato / Umeda, Satoshi

Frontiers in psychology

2023 Volume 14, Page(s) 1259928

Abstract: Facial skin blood flow (SkBF) has attracted attention as an autonomic indicator because it influences facial colour, which informs others of emotional states, and facial temperature related to social anxiety. Previous studies have examined the facial ... ...

Abstract	Facial skin blood flow (SkBF) has attracted attention as an autonomic indicator because it influences facial colour, which informs others of emotional states, and facial temperature related to social anxiety. Previous studies have examined the facial SkBF in people experiencing emotions; however, facial SkBF changes in the observers of emotions are poorly understood. Our study clarified facial SkBF changes related to observing others' emotions by comparing the changes with other physiological indices. Thirty healthy participants (24 females; mean age: 22.17) observed six types of facial expressions (neutral, angry, and embarrassed expressions with and without facial blushing) and rated the emotional intensity of the other person. We measured their facial SkBF, finger SkBF, and cardiac RR interval as they made their observations. Facial SkBF generally decreased in relation to observing emotional faces (angry and embarrassed faces) and significantly decreased for angry expressions with blushing. None of the participants noticed blushing of facial stimuli. For the RR interval and finger SkBF, there was no variation depending on the observed facial expressions, although there was a general increase related to observation. These results indicated that facial SkBF is sensitive and reactive to emotional faces-especially angry faces with blushing- compared with other autonomic indices. The facial SkBF changes were not related to either RR interval changes or the intensity rating, suggesting that facial SkBF changes may be caused by vasoconstriction and have potential functions for our emotions. The decrease in facial SkBF may have a role in calming observers by preventing them from adopting the same emotional state as a person with intense anger. These findings clarify daily facial SkBF fluctuations and their relationship with our emotional processing in interpersonal situations.
Language	English
Publishing date	2023-12-07
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2563826-9
ISSN	1664-1078
ISSN	1664-1078
DOI	10.3389/fpsyg.2023.1259928
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Article: [The Neural Mechanism of Emotional Sweating].

Asahina, Masato

Brain and nerve = Shinkei kenkyu no shinpo

2016 Volume 68, Issue 8, Page(s) 883–892

Abstract: The autonomic nervous system mediates blood pressure, heart rate, and sweat secretion, which are strongly modulated by the limbic system. Moreover, the limbic system plays an important role in generating emotion. Therefore, monitoring autonomic ... ...

Abstract	The autonomic nervous system mediates blood pressure, heart rate, and sweat secretion, which are strongly modulated by the limbic system. Moreover, the limbic system plays an important role in generating emotion. Therefore, monitoring autonomic activities, such as palmar sweating, could be useful to evaluate emotional responses. Palmar sweating is otherwise known as emotional sweating, and it's monitored for lie-detection or psychological therapy. The present review will be helpful for neurologists, psychiatrists, and psychologists seeking to understand the neural mechanism of emotional sweating.
MeSH term(s)	Central Nervous System/physiology ; Emotions/physiology ; Foot/physiology ; Hand/physiology ; Humans ; Sweat Glands/physiology ; Sweating/physiology
Language	Japanese
Publishing date	2016-08
Publishing country	Japan
Document type	Journal Article
ZDB-ID	390389-8
ISSN	1344-8129 ; 1881-6096 ; 0006-8969
ISSN (online)	1344-8129
ISSN	1881-6096 ; 0006-8969
DOI	10.11477/mf.1416200526
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Article: [Clinical significance of sudomotor evaluation for neurological diagnosis].

Asahina, Masato

Brain and nerve = Shinkei kenkyu no shinpo

2015 Volume 67, Issue 5, Page(s) 605–616

Abstract: Human sweating is functionally classified into thermoregulatory, emotional, and gustatory sweating. Several central and peripheral nervous structures are involved in the sudomotor systems. Therefore, an anatomical understanding of the sudomotor systems ... ...

Abstract	Human sweating is functionally classified into thermoregulatory, emotional, and gustatory sweating. Several central and peripheral nervous structures are involved in the sudomotor systems. Therefore, an anatomical understanding of the sudomotor systems and clinical evaluation of its function are useful for regional neurological diagnose. In addition, some neurological diseases may present characteristic abnormalities of sweating. This systematic review summarizes the anatomy, physiology, and symptomatology of sweating as well as the clinical characteristics of abnormal sweating in neurological disorders.
MeSH term(s)	Humans ; Sweating ; Sympathetic Nervous System/physiology ; Temperature
Language	Japanese
Publishing date	2015-05
Publishing country	Japan
Document type	English Abstract ; Journal Article ; Review
ZDB-ID	390389-8
ISSN	1344-8129 ; 1881-6096 ; 0006-8969
ISSN (online)	1344-8129
ISSN	1881-6096 ; 0006-8969
DOI	10.11477/mf.1416200188
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Article: [Pure autonomic failure and acetylcholine: historical and current aspects].

Asahina, Masato

Brain and nerve = Shinkei kenkyu no shinpo

2014 Volume 66, Issue 5, Page(s) 539–550

Abstract: The discovery of acetylcholine was closely related to research on the autonomic nervous system. At the onset of the twentieth century, John Newport Langley (1852-1925), a patriarch of modern autonomic research, classified the autonomic nervous system ... ...

Abstract	The discovery of acetylcholine was closely related to research on the autonomic nervous system. At the onset of the twentieth century, John Newport Langley (1852-1925), a patriarch of modern autonomic research, classified the autonomic nervous system into the sympathetic, parasympathetic, and enteral systems, proposed the concept of preganglionic and postganglionic autonomic nerves, and suggested the presence of a "receptive substance" allowing the interaction of postganglionic nerve terminals and effector visceral organs. Around the same time, Henry Hallett Dale (1875-1968) revealed the pharmacological properties of acetylcholine, and he and his colleague, Wilhelm Feldberg (1900-1993), demonstrated that acetylcholine acts as a mediator of nerve impulses across nerve junctions (synapses) between nerves (sympathetic ganglia), and between the vagus nerve and heart (parasympathetic nerve terminals). On the other hand, Bradbury and Eggleston first described 3 patients with orthostatic hypotension in 1925, introducing the term "idiopathic orthostatic hypotension". However, this term was used loosely. Therefore, Roger Bannister proposed "pure autonomic failure" as the term for idiopathic orthostatic hypotension without other neurological symptoms. Recently, autoimmune autonomic ganglionopathy associated with anti-ganglionic acetylcholine receptor antibodies has attracted attention as a differential diagnosis of pure autonomic failure, which is characterized by Lewy body pathology.
MeSH term(s)	Acetylcholine/metabolism ; Acetylcholine/pharmacology ; Animals ; Autonomic Nervous System/metabolism ; Humans ; Pure Autonomic Failure/diagnosis ; Pure Autonomic Failure/metabolism ; Receptors, Cholinergic/metabolism ; Receptors, Nicotinic/metabolism ; Synaptic Transmission
Chemical Substances	Receptors, Cholinergic ; Receptors, Nicotinic ; Acetylcholine (N9YNS0M02X)
Language	Japanese
Publishing date	2014-05
Publishing country	Japan
Document type	English Abstract ; Journal Article ; Review
ZDB-ID	390389-8
ISSN	1344-8129 ; 1881-6096 ; 0006-8969
ISSN (online)	1344-8129
ISSN	1881-6096 ; 0006-8969
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Article ; Online: [Evaluation of sudomotor function].

Asahina, Masato

Rinsho shinkeigaku = Clinical neurology

2014 Volume 54, Issue 12, Page(s) 1038–1040

Abstract: From the aspect of physiological roles, sweating on the hairy skin is an important for thermoregulation of body, and that on glabrous skin (the palm or sole) works as an anti-skid material when gripping something or performing a delicate task using the ... ...

Abstract	From the aspect of physiological roles, sweating on the hairy skin is an important for thermoregulation of body, and that on glabrous skin (the palm or sole) works as an anti-skid material when gripping something or performing a delicate task using the fingertips (emotional sweating). Abnormal sweating, which can be global or localized, is classified into hyperhidrosis and hypohidrosis, and detection of abnormal sweating, such as Horner's syndrome and Harlequin syndrome, is clinically useful for regional diagnosis of neurological lesions. In addition, sudomotor function tests, where sweat secretion is induced by physiological or pharmacological stimuli, are useful for diagnosis of neurological disorders. In this manuscript, clinical evaluation of abnormal sweating from the aspect of neurological diagnosis is reviewed.
MeSH term(s)	Autonomic Nervous System/physiopathology ; Autonomic Nervous System Diseases/diagnosis ; Body Temperature Regulation/physiology ; Diagnostic Techniques, Neurological ; Flushing/diagnosis ; Horner Syndrome/diagnosis ; Humans ; Hyperhidrosis ; Hypohidrosis/diagnosis ; Nervous System Diseases/diagnosis ; Nervous System Diseases/physiopathology ; Skin Physiological Phenomena ; Sweating/physiology
Language	Japanese
Publishing date	2014
Publishing country	Japan
Document type	English Abstract ; Journal Article ; Review
ZDB-ID	604200-4
ISSN	1882-0654 ; 0009-918X
ISSN (online)	1882-0654
ISSN	0009-918X
DOI	10.5692/clinicalneurol.54.1038
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Article ; Online: [Cognitive function and blood pressure regulation in Lewy body diseases].

Asahina, Masato

Rinsho shinkeigaku = Clinical neurology

2013 Volume 53, Issue 11, Page(s) 1386–1388

Abstract: It is well known that autonomic failure is severer in patients with dementia with Lewy bodies (DLB) compared with patients with Parkinson's disease (PD). According to the Braak's hypothesis, Lewy bodies first appear in the olfactory bulb or peripheral ... ...

Abstract	It is well known that autonomic failure is severer in patients with dementia with Lewy bodies (DLB) compared with patients with Parkinson's disease (PD). According to the Braak's hypothesis, Lewy bodies first appear in the olfactory bulb or peripheral autonomic nervous system. Lewy bodies in the peripheral autonomic nervous system ascend to dorsal motor nuclei of vagus nerve, while those in the olfactory bulb expand to the limbic system. Lewy bodies later attain the substantia nigra. However, it seems that Braak staging can not explain difference in severity of autonomic failure between DLB and PD. As a possibility, in DLB patients with significant autonomic failure, Lewy bodies may have been localized to the peripheral autonomic nervous system in a long time before onset of dementia or parkinsonism, and propagation of Lewy bodies into the central nervous system may be initiated by apparition of certain promotion factor, such as ageing and amyloid-β.
MeSH term(s)	Aged ; Autonomic Nervous System/pathology ; Autonomic Nervous System/physiopathology ; Blood Pressure ; Brain/pathology ; Cognition ; Disease Progression ; Female ; Humans ; Hypotension, Orthostatic/etiology ; Hypotension, Orthostatic/physiopathology ; Lewy Bodies/pathology ; Lewy Body Disease/pathology ; Lewy Body Disease/physiopathology ; Lewy Body Disease/psychology ; Male ; Middle Aged ; Parkinson Disease/pathology ; Parkinson Disease/physiopathology ; Parkinson Disease/psychology
Language	Japanese
Publishing date	2013-09-05
Publishing country	Japan
Document type	English Abstract ; Journal Article ; Review
ZDB-ID	604200-4
ISSN	1882-0654 ; 0009-918X
ISSN (online)	1882-0654
ISSN	0009-918X
DOI	10.5692/clinicalneurol.53.1386
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Article ; Online: Sporadic Late-onset Nemaline Myopathy Associated with Sjögren's Syndrome: A Case Report.

Hamaguchi, Tsuyoshi / Nishino, Ichizo / Hirano, Yasuki / Uchida, Nobuaki / Fujita-Nakata, Michiyo / Nakanishi, Megumi / Sakai, Tomoyuki / Asahina, Masato

Internal medicine (Tokyo, Japan)

2024

Abstract: We report the case of a 46-year-old female patient who developed a subacute progression of axial and proximal muscle weakness. Laboratory findings revealed mildly elevated serum creatine kinase levels. No monoclonal gammopathy was detected. A muscle ... ...

Abstract	We report the case of a 46-year-old female patient who developed a subacute progression of axial and proximal muscle weakness. Laboratory findings revealed mildly elevated serum creatine kinase levels. No monoclonal gammopathy was detected. A muscle biopsy revealed that she had nemaline myopathy. Serological tests and a lip biopsy revealed Sjögren's syndrome (SjS). We diagnosed her as having sporadic late-onset nemaline myopathy without monoclonal gammopathy of undetermined significance associated with SjS. Her symptoms improved after methylprednisolone pulse therapy followed by intravenous immunoglobulin therapy. A good response to immunotherapy demonstrates the necessity of making a correct diagnosis, for which a muscle biopsy is required.
Language	English
Publishing date	2024-03-04
Publishing country	Japan
Document type	Journal Article
ZDB-ID	32371-8
ISSN	1349-7235 ; 0021-5120 ; 0918-2918
ISSN (online)	1349-7235
ISSN	0021-5120 ; 0918-2918
DOI	10.2169/internalmedicine.3092-23
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Article ; Online: Autochthonous Cryptococcus gattii genotype VGIIb infection in a Japanese patient with anti-granulocyte-macrophage colony-stimulating factor antibodies.

Hamaguchi, Tsuyoshi / Uchida, Nobuaki / Fujita-Nakata, Michiyo / Nakanishi, Megumi / Tsuchido, Yasuhiro / Nagao, Miki / Iinuma, Yoshitsugu / Asahina, Masato

Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy

2024

Abstract: A 31-year-old Japanese man presented with cerebral and pulmonary cryptococcosis. Cryptococcus gattii (C. gattii) genotype VGIIb was detected in the patient's sputum and cerebrospinal fluid specimens. The serum levels of anti-granulocyte-macrophage colony- ...

Abstract	A 31-year-old Japanese man presented with cerebral and pulmonary cryptococcosis. Cryptococcus gattii (C. gattii) genotype VGIIb was detected in the patient's sputum and cerebrospinal fluid specimens. The serum levels of anti-granulocyte-macrophage colony-stimulating factor (GM-CSF) antibodies were elevated in this patient, which has been associated with pulmonary alveolar proteinosis and is considered a risk factor for C. gattii infection. After undergoing >12 months of antifungal treatments, the patient showed improvements in symptoms and findings on brain and lung imaging. Several Japanese patients who develop C. gattii infection have also been reported; however, most of these patients have been infected outside Japan, as C. gattii infection is rare in Japan. Only one patient with C. gattii genotype VGIIb infection has been reported in Japan, and it is believed that this patient contracted the infection in China. In the present case, our patient has never been outside Japan, indicating that the infection originated in Japan. Our findings suggest that C. gattii might be spreading in Japan. Therefore, patients with positive serum anti-GM-CSF antibodies should be thoroughly monitored for C. gattii infection, even those living in Japan.
Language	English
Publishing date	2024-03-12
Publishing country	Netherlands
Document type	Case Reports
ZDB-ID	1355399-9
ISSN	1437-7780 ; 1341-321X
ISSN (online)	1437-7780
ISSN	1341-321X
DOI	10.1016/j.jiac.2024.03.009
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Article ; Online: [Cardiovascular autonomic function and brain imaging].

Asahina, Masato

Rinsho shinkeigaku = Clinical neurology

2012 Volume 52, Issue 11, Page(s) 1276–1278

Abstract: The cardiovascular system is regulated by cortical modulation such as the anterior cingulate gyrus, insular cortex, amygdala as well as the reticular formation of the brainstem, including ventrolateral medulla (vasopressor center). These structures are ... ...

Abstract	The cardiovascular system is regulated by cortical modulation such as the anterior cingulate gyrus, insular cortex, amygdala as well as the reticular formation of the brainstem, including ventrolateral medulla (vasopressor center). These structures are called as the central autonomic network (CAN), and its dysfunction causes autonomic dysregulation. For example, ventrolateral medulla compression by tortuous or ectatic vessels has been etiologically linked with essential hypertension. In regard to a relationship of the cerebral cortex and autonomic dysfunction, hypoperfusion of the anterior cingulate gyrus may be seen in patients with chronic autonomic failure such as pure autonomic failure. Meanwhile, patients with chronic hypertension may also show hypoperfusion of the anterior cingulate gyrus. These findings indicate that inadequate internal environment such as hypotension and hypertension in long term can reduce activities of the anterior cingulate gyrus. In regard to the insular cortex, a relationship with cardiac events or sudden death has drawn attention but now it may be time to revaluate this relationship. Amygdala also play an important role in autonomic regulation. Patients with bilateral amygdala damage show s poor autonomic response to mental stress which induces emotional change.
MeSH term(s)	Autonomic Nervous System/physiology ; Autonomic Nervous System/physiopathology ; Brain/physiology ; Brain/physiopathology ; Cardiovascular Diseases/physiopathology ; Cardiovascular Physiological Phenomena ; Humans
Language	Japanese
Publishing date	2012-11-08
Publishing country	Japan
Document type	English Abstract ; Journal Article
ZDB-ID	604200-4
ISSN	1882-0654 ; 0009-918X
ISSN (online)	1882-0654
ISSN	0009-918X
DOI	10.5692/clinicalneurol.52.1276
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