• The final section of this chapter is dedicated to a brief overview on puberty-associated disorders, pinpointing the clinical features that should be taken into consideration and the deleterious signals that may occur until sexual maturation is achieved. (benthamscience.com)
  • Male Puberty: A Triggered Biochemical Event towards Sexual Maturation, Andrology: Current and Future Developments Biochemistry of Andrology (2017) 1: 154. (benthamscience.com)
  • They suggested that managerial approaches that focus on increasing availability of nutrients around 6 to 9 months of age (SS-2) can potentially time reproductive maturation consistently so that the majority of replacement beef heifers have reached puberty at 11 to 14 months of age while avoiding a high incidence of precocious puberty. (thecattlesite.com)
  • Delayed Puberty Delayed puberty is defined as absence of the start of sexual maturation at the expected time. (msdmanuals.com)
  • Early Puberty Early (precocious) puberty is sexual maturation that begins before the average age. (msdmanuals.com)
  • Sexual maturation or puberty begins at different ages depending on genetic and environmental factors. (msdmanuals.com)
  • If food restriction is maintained, central leptin infusion can induce sexual maturation, thus demonstrating that leptin can act as a signal for the onset of puberty. (nih.gov)
  • Since leptin, kisspeptin, neurokinin B and dynorphin are identified as regulators of puberty onset and reproductive function, this study investigated the influence of high fat diet on these modulators along puberty onset and after sexual maturation. (usp.br)
  • Puberty is a period of several years in which rapid physical growth and psychological changes occur, culminating in sexual maturity. (wikipedia.org)
  • Individual small RNAs are responsible for controlling the expression of gonadoliberin or GnRH (Gonadotropin-Releasing Hormone), a neurohormone that controls sexual maturation, the appearance of puberty, and fertility in adults, new research shows. (sciencedaily.com)
  • This inhibition of inhibitory factors allows increased production of GnRH, which is indispensable to infantile and juvenile sexual maturation, and the occurrence of puberty. (sciencedaily.com)
  • Indeed, in the absence of microRNAs, the expression of transcription factors that inhibit GnRH expression increases, and leads to the extinction of GnRH synthesis in the brain, leading to the arrest of sexual maturation, absence of puberty, and complete sterility in adult individuals. (sciencedaily.com)
  • The gonads direct sexual development before birth and during puberty and are important for reproduction. (medlineplus.gov)
  • Sound has been shown to play an important role in such aggregations as a species-specific recognition signal, orientation mechanism, and stimulant of sexual activity and synchronous reproductive efforts of the entire colony/aggregation 23 , 24 . (nature.com)
  • 2. Adolescence, a period of transition from childhood to adulthood, is characterized by rapid and objective physiologic changes, such as rapid growth, maturation of the reproductive system and changes in physical appearance. (who.int)
  • Thus, the prevailing predictor of maturation in fish appears to be a redirection of energy from growth to reproduction. (earth.com)
  • Bell, DJ & Mitchell, S 1984, ' Effects of female urine on growth and sexual maturation in male rabbits ', Journal of Reproduction and Fertility , vol. 71, no. 1, pp. 155-160. (uea.ac.uk)
  • To describe and analyze growth curves of body mass index (BMI) and height according to sexual maturation status in children and adolescents aged 8-14 years old in the city of Florianopolis, Santa Catarina, Brazil. (imed.pub)
  • We observed different growth curves of BMI and height according to sexual maturation status for both boys and girls. (imed.pub)
  • Association of sexual maturation with excess body weight and height in children and adolescents. (imed.pub)
  • Steroids Cycles for masteron when cutting, when calories sexual maturation in Flemish adolescents. (thedollpalace.com)
  • Severe dietary restriction in juvenile female rats is associated with low plasma leptin and sexual immaturity. (nih.gov)
  • Ranch profit is hugely hit by replacement heifer rearing and any strategies to assist in getting animals to sexual maturity faster is a major goal for the beef industry. (thecattlesite.com)
  • Sexual maturity begins earlier today than a century ago, probably because of improvements in nutrition, general health, and living conditions. (msdmanuals.com)
  • Interestingly, while genes involved in immune system function were down-regulated in the brains of mature males, changes in the expression levels of several receptors and channels were observed suggesting that some rewiring is occurring in the brain at sexual maturity. (biomedcentral.com)
  • This study shows that the brains of eels undergo major changes at the molecular level at sexual maturity that may include re-organization at the cellular level. (biomedcentral.com)
  • The results from the 2015 season showed that the female rainbow trout, close to full sexual maturity, gets a visual quality reduction especially in meat color and external characteristics. (nofima.com)
  • 2002. The effects of atrazine on the sexual maturation of female rats. (cdc.gov)
  • During mitosis, cells undergo symmetrical cell division, while oocyte meiotic maturation undergoes two consecutive, asymmetric divisions that generate a totipotent haploid oocyte and two small polar bodies not involved in DNA replication. (bioone.org)
  • Fish sexual maturation in relation to influencing factors has been discussed in this presentation. (fishconsult.org)
  • GAMBARDELLA, Ana M D and FRUTUOSO, Maria F P . Body image dissatisfaction during adolescence and its relation to sexual maturation . (bvsalud.org)
  • The production of these hormones increases gradually until sexual maturation is met. (wikipedia.org)
  • HSDD may also result from impairment of sexual function, particularly erectile dysfunction on the part of the male, or vaginismus on the part of the female. (minddisorders.com)
  • Hypoactive sexual desire disorder (HSDD) is defined as the persistent or recurrent extreme aversion to, absence of, and avoidance of all, or almost all, genital sexual contact with a sexual partner. (minddisorders.com)
  • In the absence of sexual trauma, there is often a repressive family attitude concerning sex that is sometimes enhanced by rigid religious training. (minddisorders.com)
  • Priapism is the occurrence of any persistent erection of more than four hours duration occurring in the absence of sexual stimulation. (minddisorders.com)
  • Sexual maturation disorder was listed in the tenth edition of the World Health Organization's (WHO) International Classification of Diseases, the ICD-10, the most widely used diagnostic manual by psychiatrists and psychologists worldwide. (wikipedia.org)
  • It was described as a disorder of anxiety or depression related to an uncertainty about one's gender identity or sexual orientation. (wikipedia.org)
  • Sexual maturation disorder, along with ego-dystonic sexual orientation and sexual relationship disorder, was introduced to the ICD in 1990, replacing the ICD-9 diagnosis of homosexuality. (wikipedia.org)
  • The following note was applied to the entirety of part F66, the section in which these three diagnoses appeared: "Sexual orientation by itself is not to be regarded as a disorder. (wikipedia.org)
  • In reference to sexual maturation disorder specifically, the working group noted the possibility that this diagnostic category conflated normal developmental patterns with pathological processes, and also noted that people with a non-heterosexual sexual orientation or who are gender nonconforming may experience social stress due to stigma, but such distress is not indicative of a disorder. (wikipedia.org)
  • His work has contributed to deciphering some physiological neuroendocrine mechanisms of sexual maturation. (chuv.ch)
  • However, whenever sexual maturation begins, it typically occurs in the same order. (msdmanuals.com)
  • It occurs between the first and third months of life of the infant, and is important to the correct course of sexual maturation. (sciencedaily.com)
  • Significant psychosocial development, especially emotional, intellectual and spiritual aspects occurs through a progressive maturation process from childhood dependence to adult interdependence. (who.int)
  • The sexual maturation seems to affect directly the evolution of BMI and height and should be considered in the assessment of nutritional status during childhood. (imed.pub)
  • Acquired, situational HSDD in the adult is commonly associated with boredom in the relationship with the sexual partner. (minddisorders.com)
  • It is the most common of all female sexual disorders, occurring in at least 20% of women in the United States. (minddisorders.com)
  • The vertebrate brain plays a critical role in the regulation of sexual maturation and reproduction by integrating environmental information with developmental and endocrine status. (biomedcentral.com)
  • A major function of the brain is to establish the appropriate developmental and endocrine status for reproduction, and then to co-ordinate this with aspects of behavior and sexual maturation. (biomedcentral.com)
  • Maturation and spawning appear to be induced when the supply of oxygen relative to the weight of individual fish declines. (earth.com)
  • However, the level of maturation is the main factor determining the fish quality - flesh quality and skin pigment. (nofima.com)
  • The boys and girls were divided for the analysis based on their age, transformed into sexual maturation phase. (bvsalud.org)
  • Early sexual maturation is associated with increased BMI z score to boys until 11 years of age and to girls in all groups age, and with increased height z score to boys in all age groups and in girls of 9 -12.5 years of age. (imed.pub)
  • Late sexual maturation is associated with lower values of BMI Z score in boys between 10 to 12 years of age and slower evolution of BMI Z score in girls. (imed.pub)
  • I can't help but agree with Naomi Wolf that if we were free of the constraint of constant grooming we might (God forbid) have more time and energy to start questioning such overt sexual discrimination, or why we are being paid 15% less than men. (huffingtonpost.co.uk)
  • In affected individuals who are chromosomally male (having an X and a Y chromosome), problems with sexual development lead to abnormalities of the external genitalia. (medlineplus.gov)
  • As part of the development of the ICD-11, the WHO appointed a Working Group on the Classification of Sexual Disorders and Sexual Health to make recommendations on the disease categories related to sexual orientation (part F66). (wikipedia.org)
  • Sexual maturation was self-assessed and classified according to Tanner stages of sexual development. (imed.pub)
  • 17α-hydroxylase/17,20-lyase deficiency is one of a group of disorders, known as congenital adrenal hyperplasias, that impair hormone production and disrupt sexual development and maturation. (medlineplus.gov)
  • Hormone imbalances lead to the characteristic signs and symptoms of 17α-hydroxylase/17,20-lyase deficiency, which include high blood pressure ( hypertension ), low levels of potassium in the blood (hypokalemia), and abnormal sexual development. (medlineplus.gov)
  • 2. Adolescence is characterized by physiologic, psychosocial, especially emotional, intellectual and spiritual development and maturation processes. (who.int)
  • A third possibility is that initial attempts at sexual intercourse resulted in pain or sexual failure. (minddisorders.com)
  • The rainbow trout does not seem to have significant osmotic challenges in the maturation process in seawater. (nofima.com)
  • Sperm counts and the pattern of androgen-dependent production of gel-plugs in semen also differed significantly between treatments during the critical maturation period. (uea.ac.uk)
  • Accordingly, the ICD-11 does not include any diagnostic categories that can be applied to people on the basis of sexual orientation, bringing the ICD in line with the DSM-5. (wikipedia.org)
  • Tertiles of age in each sexual maturation stage were used to classify individuals in early, normal or late sexual maturation. (imed.pub)
  • The affected person has a low level of sexual interest and desire that is manifested by a failure to initiate or be responsive to a partner's initiation of sexual activity. (minddisorders.com)
  • In the extreme form of HSDD, the patient not only lacks sexual desire, but may also find sex to be repulsive, revolting, and distasteful. (minddisorders.com)