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50 records – page 1 of 5.

Annual variations in serum thyroid-stimulating hormone and thyroid hormones and in their responses to thyrotrophin-releasing hormone in the reindeer.

https://arctichealth.org/en/permalink/ahliterature62081
Source
J Endocrinol. 1994 Jun;141(3):527-33
Publication Type
Article
Date
Jun-1994
Author
J. Timisjärvi
V. Ojutkangas
E. Eloranta
M. Nieminen
J. Leppäluoto
S. Liimatainen
O. Vuolteenaho
Author Affiliation
Department of Physiology, University of Oulu, Finland.
Source
J Endocrinol. 1994 Jun;141(3):527-33
Date
Jun-1994
Language
English
Publication Type
Article
Keywords
Animal Nutrition
Animals
Comparative Study
Environment
Female
Light
Reindeer - blood
Research Support, Non-U.S. Gov't
Seasons
Temperature
Thyroid Gland - drug effects
Thyroid Hormones - blood
Thyrotropin - blood
Thyrotropin-Releasing Hormone - pharmacology
Thyroxine - blood
Triiodothyronine - blood
Triiodothyronine, Reverse - blood
Abstract
The reindeer in its natural habitat is subject to great annual variations in ambient temperature, illumination and nutrition. To ascertain the effect of these environmental factors on thyroid function, serum thyroid-stimulating hormone (TSH), thyroxine (T4), tri-iodothyronine (T3) and reverse T3 (rT3) concentrations were measured four times a year (2 June, 8 October, 21 November, and 24 February) in 14 animals housed outdoors at latitude 69 degrees 10'N. They all showed statistically significant (P
PubMed ID
8071651 View in PubMed
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Are the blood pressure and endocrine responses of healthy subjects exposed to cold stress altered by an acutely increased sodium intake?

https://arctichealth.org/en/permalink/ahliterature10212
Source
Eur J Appl Physiol. 2001 Jan-Feb;84(1-2):48-53
Publication Type
Article
Author
O. Arjamaa
T. Mäkinen
L. Turunen
P. Huttunen
J. Leppäluoto
O. Vuolteenaho
H. Rintamäki
Author Affiliation
Institute of Arctic Medicine, PO BOX 5000, 90014 University of Oulu, Finland. olli.arjamaa@oulu.fi
Source
Eur J Appl Physiol. 2001 Jan-Feb;84(1-2):48-53
Language
English
Publication Type
Article
Keywords
Adult
Atrial Natriuretic Factor - blood
Blood Pressure - drug effects - physiology
Cold
Female
Hematocrit
Hemoglobins
Humans
Male
Natriuretic Peptide, Brain - blood
Norepinephrine - blood
Protein Precursors - blood
Sodium, Dietary - administration & dosage
Stress - physiopathology
Abstract
In the study reported here, we examined blood pressure and endocrine responses in cold conditions during salt load in young healthy subjects who had previously shown increased resting blood pressure during acutely increased sodium intake. Subjects (n = 53) added 121 mmol sodium into their normal diet for 1 week. If their mean arterial pressure had increased by a minimum of 5 mmHg compared to the previous measure they were selected for subsequent experiments. The subjects (n = 8) were given 121 mmol supplemental sodium.day-1 for 14 days. They were then put into a wind tunnel for 15 min (temperature--15 degrees C, wind speed 3.5.ms-1). Their blood pressure increased (P
PubMed ID
11394253 View in PubMed
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Atrial natriuretic peptide and its mRNA in heart and brain of vasopressin-deficient Brattleboro rats.

https://arctichealth.org/en/permalink/ahliterature48389
Source
Acta Physiol Scand. 1995 May;154(1):35-42
Publication Type
Article
Date
May-1995
Author
O. Arjamaa
T. Taskinen
A. Kanervo
O. Vuolteenaho
J. Leppäluoto
Author Affiliation
Department of Physiology, University of Oulu, Finland.
Source
Acta Physiol Scand. 1995 May;154(1):35-42
Date
May-1995
Language
English
Publication Type
Article
Keywords
Animals
Atrial Natriuretic Factor - genetics - metabolism
Body Weight
Brain - metabolism
Deamino Arginine Vasopressin - pharmacology
Diabetes Insipidus - physiopathology
Drinking
Heart Atria - metabolism
Heart Ventricles - metabolism
Hypoglycemic Agents - pharmacology
Male
Myocardium - metabolism
Organ Size
RNA, Messenger - metabolism
Rats
Rats, Brattleboro - metabolism
Research Support, Non-U.S. Gov't
Urination
Vasopressins - deficiency
Water-Electrolyte Balance - physiology
Abstract
To understand the secretion and synthesis of atrial natriuretic peptide we measured immunoreactive atrial natriuretic peptide from plasma, heart tissues and brain areas, and ANP mRNA was determined from heart auricles and ventricles of vasopressin-deficient Brattleboro rats (DI) and from desmopressin treated Brattleboro rats (DI+DDAVP). Long-Evans rats (LE) served as controls. DI+DDAVP rats were given for 3 days sc. injections of 0.5 micrograms 1-desamino-8-D-arginine vasopressin in 1 mL saline twice a day. The rats were housed in single metabolic cages and urinary output and water intake were measured daily. All the body and organ weight parameters were similar in the three groups when the rats were killed. No change was seen in the plasma ANP level between the groups. The right ventricle of DI+DDAVP rats had significantly (P
PubMed ID
7572200 View in PubMed
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Atrial natriuretic peptide (ANP) and N-terminal peptide of proANP (NT-proANP) in maternal and umbilical cord plasma in spontaneous labor and at elective cesarean section.

https://arctichealth.org/en/permalink/ahliterature64933
Source
Eur J Obstet Gynecol Reprod Biol. 1992 Aug 21;46(1):11-7
Publication Type
Article
Date
Aug-21-1992

Bibliography on arctic medical research in the USSR.

https://arctichealth.org/en/permalink/ahliterature239528
Source
Arctic Med Res. 1985;39:1-140
Publication Type
Bibliography/Resource List
Article
Date
1985

Blood pressure and endocrine responses of healthy subjects in cold pressor test after acutely increased dietary sodium intake.

https://arctichealth.org/en/permalink/ahliterature10173
Source
J Physiol Anthropol Appl Human Sci. 2001 May;20(3):207-12
Publication Type
Article
Date
May-2001
Author
O. Arjamaa
T. Mäkinen
L. Turunen
P. Huttunen
J. Leppäluoto
O. Vuolteenaho
H. Rintamäki
Author Affiliation
Center of Arctic Medicine, University of Oulu, Oulu, Finland. Olli.Arjamaa@oulu.fi
Source
J Physiol Anthropol Appl Human Sci. 2001 May;20(3):207-12
Date
May-2001
Language
English
Publication Type
Article
Keywords
Adult
Blood Pressure - physiology
Cold
Endocrine System - physiology
Female
Hand
Humans
Male
Natriuretic Agents - blood
Norepinephrine - blood
Pressoreceptors - physiology
Random Allocation
Sodium, Dietary
Abstract
The objective of the study was to compare blood pressure and endocrine responses in a cold pressure test in young healthy subjects who had shown increased blood pressure during an acutely increased sodium intake. Subjects (n = 53) added 121 mmol sodium into their normal diet for one week. If the mean arterial pressure had increased by a minimum of 5 mmHg compared to the control measure, they were selected for the experiments. The selected subjects (n = 8) were given 121 mmol supplemental sodium d-1 for 14 days after which they immersed the right hand into a cold (+10 degrees C) water bath for 5 min. The blood pressure increased (P
PubMed ID
11499168 View in PubMed
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Circannual concentrations of melatonin, gonadotrophins, prolactin and gonadal steroids in males in a geographical area with a large annual variation in daylight.

https://arctichealth.org/en/permalink/ahliterature238502
Source
Acta Endocrinol (Copenh). 1985 Aug;109(4):446-50
Publication Type
Article
Date
Aug-1985
Author
H. Martikainen
J. Tapanainen
O. Vakkuri
J. Leppäluoto
I. Huhtaniemi
Source
Acta Endocrinol (Copenh). 1985 Aug;109(4):446-50
Date
Aug-1985
Language
English
Publication Type
Article
Keywords
Adult
Estradiol - blood
Finland
Follicle Stimulating Hormone - blood
Gonadotropins, Pituitary - blood
Humans
Light
Luteinizing Hormone - blood
Male
Melatonin - blood
Periodicity
Pineal Gland - physiology
Pituitary Gland - physiology
Prolactin - blood
Seasons
Testis - physiology
Abstract
This study was aimed at elucidating the possible effects of a large annual variation in photoperiodicity on the secretory activities of the pineal gland, pituitary and testes. Serum daytime melatonin, FSH, LH, prolactin (Prl), testosterone and oestradiol concentrations were determined monthly over a year in 24 healthy young adult men (except for melatonin which was analysed only in 11 subjects) in northern Finland, where the day length is 22 h in mid-summer and 3.5 h in mid-winter. Serum daytime melatonin levels showed two annual peak values, in December and May, and a nadir was observed in August. The absolute values of the other hormones measured did not show significant month to month variation over the observation period. When hormone levels were calculated as percentages of the individual annual means, several significant differences were found between monthly levels. The melatonin peak in May (133 +/- 20%, SE, of the annual mean) was associated with significant increases in LH (110 +/- 4%) and FSH (107 +/- 3%). Prl levels (115 +/- 9%) reached a maximum in January. The nadirs of melatonin and the pituitary hormones measured were seen in August. Oestradiol showed the highest values in April-June, but no significant variation was found in serum testosterone levels. Positive correlations were observed between FSH and LH (r = 0.41, P less than 0.01), and Prl and LH (r = 0.26, P less than 0.01), whereas Prl and testosterone (r = -0.17, P less than 0.01) were inversely correlated.(ABSTRACT TRUNCATED AT 250 WORDS)
PubMed ID
3929512 View in PubMed
Less detail
Source
Arctic Med Res. 1995;54 Suppl 2:5-8
Publication Type
Article
Date
1995

Delayed pro-opiomelanocortin activation after ethanol intake in man.

https://arctichealth.org/en/permalink/ahliterature11513
Source
Alcohol Clin Exp Res. 1994 Oct;18(5):1226-9
Publication Type
Article
Date
Oct-1994
Author
A C Ekman
O. Vakkuri
O. Vuolteenaho
J. Leppäluoto
Author Affiliation
Department of Physiology, University of Oulu Medical School, Finland.
Source
Alcohol Clin Exp Res. 1994 Oct;18(5):1226-9
Date
Oct-1994
Language
English
Publication Type
Article
Keywords
Adult
Alcohol Drinking - blood
Arousal - physiology
Circadian Rhythm - physiology
Corticotropin - blood
Cross-Over Studies
Dose-Response Relationship, Drug
Double-Blind Method
Ethanol - pharmacokinetics
Female
Humans
Hydrocortisone - blood
Male
Pro-Opiomelanocortin - blood
Reference Values
Research Support, Non-U.S. Gov't
beta-Endorphin - blood
Abstract
To elucidate the effect of ethanol on the secretion of ACTH and beta-endorphin (BE) as the representatives of the pro-opiomelanocortin (POMC) system, as well as cortisol as the hypophyseally regulated peripheral hormone, we measured concentrations of serum ethanol and plasma ACTH, BE, and cortisol at 1- to 4-hr intervals for 12 hr after administration of 0.5 and 1.0 g ethanol/kg of body weight and placebo drinks between 1900-1945 hr to nine healthy volunteers according to a double-blind, cross-over design. Plasma ACTH, BE, and cortisol showed an expected diurnal rhythm with the highest levels at 0700 hr. Intake of ethanol had no statistically significant effects on plasma ACTH up to 0700 hr in the morning. The higher dose caused increased levels of BE at 0100 hr and both doses at 0200 hr. Plasma cortisol at 0400 hr was higher in subjects receiving 1.0 g ethanol/kg than in those receiving placebo (p
PubMed ID
7847611 View in PubMed
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Effect of endurance training on atrial natriuretic peptide gene expression in normal and hypertrophied hearts.

https://arctichealth.org/en/permalink/ahliterature54920
Source
J Appl Physiol. 1994 Mar;76(3):1184-94
Publication Type
Article
Date
Mar-1994
Author
P. Mäntymaa
J. Arokoski
I. Pörsti
M. Perhonen
P. Arvola
H J Helminen
T E Takala
J. Leppäluoto
H. Ruskoaho
Author Affiliation
Department of Pharmacology, University of Oulu, Finland.
Source
J Appl Physiol. 1994 Mar;76(3):1184-94
Date
Mar-1994
Language
English
Publication Type
Article
Keywords
Animals
Atrial Natriuretic Factor - biosynthesis - genetics - immunology
Blotting, Northern
Body Weight - physiology
Cardiomegaly - metabolism
Dogs
Eating - physiology
Female
Lactates - blood
Lactic Acid
Male
Myocardium - metabolism
Organ Size - physiology
Physical Conditioning, Animal
Physical Endurance - physiology
RNA, Messenger - biosynthesis
Rats
Rats, Inbred SHR
Rats, Inbred WKY
Rats, Wistar
Research Support, Non-U.S. Gov't
Abstract
We studied the effects of physical endurance training on atrial natriuretic peptide (ANP) gene expression in beagle dogs, Wistar rats, and spontaneously hypertensive rats (SHR). The dogs underwent a gradually increased running training up to 40 km/day on a treadmill for 55 wk while the nontrained sibling control dogs were kept in their cages throughout the study. Endurance training caused a significant 13% (P
PubMed ID
8005862 View in PubMed
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50 records – page 1 of 5.