GROWTH AND DEVELOPMENT IN THE NORMAL INFANT AND CHILD Gilbert P. August The pediatric population is composed of continually changing individuals. Thus, a knowledge of normal developmental changes is required…
RHYTHMS IN GLUCOSE REGULATION Part of “CHAPTER 6 – ENDOCRINE RHYTHMS“ In normal humans, glucose tolerance varies with the time of day.67 Figure 6-11 illustrates circadian variations in glucose tolerance…
RHYTHMS IN THE THYROTROPIC AXIS Part of “CHAPTER 6 – ENDOCRINE RHYTHMS“ In normal adult men and women, TSH levels are low throughout the daytime and begin to increase in…
RHYTHMS IN THE GONADOTROPIC AXIS Part of “CHAPTER 6 – ENDOCRINE RHYTHMS“ Rhythms in the gonadotropic axis cover a wide range of frequencies, from episodic release in the ultradian range…
RHYTHMS IN PROLACTIN SECRETION Part of “CHAPTER 6 – ENDOCRINE RHYTHMS“ Under normal conditions, the 24-hour profile of plasma PRL levels (see Chap. 13) follows a bimodal pattern, with minimal…
RHYTHMS IN THE PITUITARY-ADRENAL AXIS Part of “CHAPTER 6 – ENDOCRINE RHYTHMS“ Twenty-four-hour profiles of cortisol typical of normal subjects are shown in Figure 6-2, Figure 6-3, Figure 6-4 and…
RHYTHMS IN THE SOMATOTROPIC AXIS Part of “CHAPTER 6 – ENDOCRINE RHYTHMS“ In normal subjects, the 24-hour profile of plasma GH consists of stable low levels abruptly interrupted by bursts…
METHODOLOGIC ASPECTS OF THE STUDY OF ENDOCRINE RHYTHMS Part of “CHAPTER 6 – ENDOCRINE RHYTHMS“ DIURNAL VARIATIONS To investigate circadian hormonal rhythms, a group of individuals is usually studied for…
ULTRADIAN RHYTHMS Part of “CHAPTER 6 – ENDOCRINE RHYTHMS“ PERIOD RANGE AND ORIGIN The term ultradian is primarily used to designate rhythmicities with periods ranging from fractions of hours to…
CIRCADIAN RHYTHMS Part of “CHAPTER 6 – ENDOCRINE RHYTHMS“ BASIC MECHANISMS There is virtually neither a tissue nor a function in the human organism that does not exhibit regular changes…
