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Ectopic uterine tissue as a chronic pain generator.

While chronic pain is a main symptom in endometriosis, the underlying mechanisms and effective therapy remain elusive. We developed an animal model enabling the exploration of ectopic endometrium as a source of endometriosis pain. Rats were surgically implanted with autologous uterus in the gastrocnemius muscle. Within two weeks, visual inspection revealed the presence of a reddish-brown fluid-filled cystic structure at the implant site. Histology demonstrated cystic glandular structures with stromal invasion of the muscle. Immunohistochemical studies of these lesions revealed the presence of

The selective estrogen receptor modulator, raloxifene: a segment II/III delivery study in rats.

Raloxifene is a nonsteroidal, selective estrogen receptor modulator developed by Eli Lilly and Company as a therapeutic agent for postmenopa … cted, but vaginal patency occurred ca 2 d earlier than controls in females from the 10-mg/kg group. Estrous cycles of the F1 females were not affected during the first two weeks after vaginal opening, but were disrupted at 12 to 14 weeks of age in the 10-mg/kg group. These females showed poorer mating and fertility indices, and litter size was reduced in the tw …

What regulates placental steroidogenesis in 90-day pregnant ewes?

By day-90, the placenta secretes half of the circulating progesterone and 85% of the circulating estradiol-17beta [Weems YS, Vincent D, Tana … one (LH), pregnancy specific protein B (PSPB), or arachidonic acid (AA) on ovine endometrium of the estrous cycle or placental secretion of prostaglandins E(2) (PGE(2)) and F(2alpha) (PGF(2alpha)), and progesterone in vitro. Prostaglandins Other Lipid Mediators 2003;71:55-73]. Indomethacin (INDO), a prostaglandin synthesis inhibitor [Lands WEM. The biosynthesis …

Frequency of luteinizing hormone pulses in cattle influences duration of persistence of dominant ovarian follicles, follicular fluid concentrations of steroids, and activity of insulin-like growth factor binding proteins.

The objectives of the present study were to determine how varying frequency of LH pulses as controlled by varying treatments with progestero … for 8 days, then two PRIDs for 8 days (0.5-2PRID). Treatment was initiated on the fifth day of the estrous cycle, which was designated as Day 0, and continued for 16 days. All P4-treated females were administered prostaglandin F2alpha on Day 0 and 1 to regress their corpora lutea. Frequency of LH pulses was greater during treatment with the smaller dose of P4 …

Semen characteristics and second successful artificial insemination of Asian elephant (Elephas maximus) in Thailand.

BACKGROUND AND AIM: As the number of wild Asian elephants (Elephas maximus) continues to decline, maintaining healthy populations under huma … <60% progressive motility) ejaculates. Semen ejaculates for AI were collected from three bulls. The estrous cycles of four females were monitored using an enzyme immunoassay. Seven AI attempts were conducted using frozen and/or chilled semen by endoscopic visualization. AI was repeated 1 day before the luteinizing hormone surge, on the day of the surge, and 1 d …

Toxicology and carcinogenesis studies of diethylamine (CAS No. 109-89-7) in F344/N rats and B6C3F1 mice (inhalation studies).

UNLABELLED: Diethylamine is used mainly as a chemical intermediate to produce the corrosion inhibitor N,N-diethylethanolamine and a lesser a … perm motility in 32, 62, and 125 ppm males; there were no significant differences in the lengths of estrous cycles between chamber control and exposed groups of females. Exposure-related nasal lesions were seen primarily in rats exposed to 62 or 125 ppm. These lesions included turbinate necrosis, suppurative inflammation, respiratory epithelial hyperplasia, squ …

Targeting the RANKL/RANK/OPG Axis for Cancer Therapy.

RANKL and RANK are expressed in different cell types and tissues throughout the body. They were originally described for their essential roles in bone remodeling and the immune system but have subsequently been shown to provide essential signals from regulating mammary gland homeostasis during pregnancy to modulating tumorigenesis. The success of RANKL/RANK research serves as a paragon for translational research from the laboratory to the bedside. The case in point has been the development of Denosumab, a RANKL-blocking monoclonal antibody which has already helped millions of patients sufferin

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… Therefore, RANK and RANKL link sex hormones to mammary progenitor cell proliferation during the estrous cycle and in pregnancy ( 81 ) ( Figure 2 ). Figure 2 RANK/RANKL pathway in mammary gland physiology and breast cancer. … Interestingly, women with germline BRCA1/2 mutations usually exhibit higher progesterone and estrogen levels during the gestational phase of the estrous cycle compared to women without these mutations ( 87 ). …

Final report on the safety assessment of methoxyisopropanol and methoxyisopropyl acetate as used in cosmetics.

Methoxyisopropanol and Methoxyisopropyl Acetate, commonly known as propylene glycol monomethyl ether (PGME) and propylene glycol monomethyl … using rats, continuous inhalation of 3000 ppm Methoxyisopropanol produced CNS depression, prolonged estrous cycles, reduced fertility indices, reduced pup weights and pup survival, and delayed sexual development, with a NOAEL for reproductive and developmental effects of 1000 ppm. In a continuous breeding protocol using mice, 2.0% Methoxyisopropanol in drinking …

NTP technical report on the toxicity studies of Glutaraldehyde (CAS No. 111-30-8) Adminstered by Inhalation to F344/N Rats and B6C3F1 Mice.

Glutaraldehyde is a potent sensory irritant with the capability to cross-link, or fix, proteins. It is used industrially as an antimicrobial agent and as a cold sterilant in hospitals, and it has a variety of other industrial uses. The toxicity of glutaraldehyde was evaluated in 2-week and 13-week inhalation exposure studies in F344/N rats and B6C3F1 mice. In addition to histopathology, evaluations included clinical pathology and assessments of sperm morphology and estrous cycle length. In vitro genetic toxicity studies included assessments of mutagenicity in Salmonella typhimurium and in mous…

Биология и болезни крыс

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… Despite the lack of seasonal variation in estrous cycles in the rat, both ovarian function and the estrous cycle are influenced by light cycles. … Caloric restriction, a 15–30% decrease from ad libitum caloric intake, may cause cessation of estrous cycles and delayed sexual maturation ( Fox and Laird, 1970 ). …

The Health-Promoting Effects and the Mechanism of Intermittent Fasting.

Intermittent fasting (IF) is an eating pattern in which individuals go extended periods with little or no energy intake after consuming regular food in intervening periods. IF has several health-promoting effects. It can effectively reduce weight, fasting insulin levels, and blood glucose levels. It can also increase the antitumor activity of medicines and cause improvement in the case of neurological diseases, such as memory deficit, to achieve enhanced metabolic function and prolonged longevity. Additionally, IF activates several biological pathways to induce autophagy, encourages cell renew

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… The significant effects of IF-DR regimens on body weight, blood glucose, estrous cycle, and multiple hormone levels in young rats adversely affect the entire hypothalamic-pituitary-gonadal axis, which in turn affects reproduction in young rats [ 55 ]. … Sushil [ 55 ] | Nonrandomized controlled experiments on animals | Wistar strain young adult male and virgin cycling female albino rats divided into the control group and the IF-DR group | Estrous cycle disrupted, ovarian weight, testosterone↓; Glu, LEP, LH↓↓; estradiol↑↑ | IF-DR has a negative effect …

Воздействие транскутановой стимуляции нервы на сексуальную функцию женщин у пациентов с множественным склерозом: обзор скрипта.

Среди женщин с множественным склерозом (СМС) широко распространена сексуальная дисфункция (СФД), что приводит к значительным нарушениям качества жизни. Несмотря на различные имеющиеся методы лечения, в нынешних подходах зачастую не учитывается сложный, многофакторный характер ЛСД в этой группе населения. Транскутановая стимуляция берцового нерва (TTNS) недавно привлекла внимание как неинвазивная нейромодуляционная терапия, которая продемонстрировала потенциальные выгоды от нейрогенной дисфункции мочевого пузыря, при этом предварительные данные свидетельствуют о частичном улучшении сексуальной

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… Interestingly, the effects on blood perfusion were independent of stimulation frequency or estrous cycle phase, indicating a consistent neurogenic response. …

Нацеливаюсь на гормональное лечение мозга в менопаузе.

Эстрогены являются нейрозащитными, и менопауза может способствовать нейродегенерации. Эстриол преимущественно связывает бета-рецептор эстрогена (ERβ) в мозге для обеспечения нейрозащиты. Ранее пероральный эстриол повышал скорость когнитивной обработки и уменьшил атрофию коры головного мозга в месяц лечения twelve в случае женщин с множественным склерозом (МС). В данном случае лечение с помощью волдыря, предназначенного для здоровых менопаузальных женщин, содержащих эстриол и прогестерон (Pearlpak), оценивалось с точки зрения его воздействия на когнитивные симптомы, характерные для домена, в ря

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… We did not assess estrous cycles because this has been well established at the age of focus here, 12-14 months 92 , 93 . Young mice cycle approximately every 3-5 days. …

Gene regulation by non-Coding RNAs in infertility: a mechanistic review.

Infertility is a significant global health issue affecting millions of couples, with noncoding RNAs (ncRNAs) emerging as pivotal regulators in reproductive biology. This review explores the roles of various ncRNAs, including microRNAs (miRNAs), small interfering RNAs (siRNAs), long noncoding RNAs (lncRNAs), PIWI-interacting RNAs (piRNAs), and circular RNAs (circRNAs) in male and female infertility. These ncRNAs modulate critical processes such as spermatogenesis, oogenesis, follicular development, and embryo implantation through mechanisms like post-transcriptional regulation, chromatin remode

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… Accordingly, the ovary’s miRNA expression patterns show a great deal of variation based on the physiological function, cell type, and estrous cycle phase. … Furthermore, at various phases of the bovine estrous cycle, diverse patterns of miRNA expression have been noted in small and big follicles. …

NTP technical report on the toxicity studies of 1,6-Hexanediamine Dihydrochloride (CAS No. 6055-52-3) Administered by Drinking Water and Inhalation to F344/N Rats and B6C3F1 Mice.

1,6-Hexanediamine (HDA) is an aliphatic amine that is produced in large volumes in the United States. HDA is widely used as a corrosion inhi … ry nasal epithelium. HDDC caused no significant changes in sperm morphology or in the length of the estrous cycle of rats or mice. In mating trials, HDDC demonstrated no adverse effects on reproduction of rats. The only statistically significant changes in reproductive parameters of mice were a slight increase in gestation length in the 50 mg/m(3) and 160 mg/m( …

A review of spontaneous bone metastases in domestic and laboratory animals.

Bone metastases cause significant morbidity and ultimately death in some human cancer patients. Although experimental animal models of skeletal metastases have been invaluable for investigating the molecular mechanisms of cancer progression and growth in bones, few of these models recapitulate the heterogeneous nature of bone metastases observed in humans. Animals with naturally occurring cancers have been proposed as ideal and unique models for human cancer research. From this, understanding the incidence, histologic features, clinical presentation, and response to therapy of spontaneous bone

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… A landmark veterinary study found female dogs spayed before one estrous cycle or after 2 or more estrous cycles had relative risks of 0.5% and 26%, respectively, of developing mammary carcinomas when compared to dogs who were never spayed [ 86 ]. …

Физические упражнения низкой интенсивности связаны с улучшением мелиорации и сокращением микрогранной активации в модели обезвоживания Cuprizone.

Уничтожение таких болезней, как множественный склероз, приводит к повреждению милиновой оболочки, что приводит к неврологическим проблемам. Хотя точные причины НР неясны, известно, что подстрекательские процессы и плохое воспоминание способствуют прогрессированию заболеваний. Упражнения показали, что они являются ненаркотической терапией для MS, и, согласно сообщениям, выгоды для мобильности, настроения и потенциальной нейрозащиты. Однако не в полной мере понимаются конкретные способы воздействия физических упражнений на воспоминание и нейронное воспаление в условиях демиелина. В рамках этого

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… First, we exclusively used male mice to control variability associated with the estrous cycle and to maintain consistency with prior research. …

The effect of growth hormone on ovarian function recovery in a mouse model of ovarian insufficiency.

ObjectivesTo evaluate the effects and mechanisms of action of growth hormone (GH) in the recovery of ovarian function in ovarian insufficiency induced by cyclophosphamide (CP) in a mouse model.Materials and methodsAfter inducing ovarian insufficiency by administering 400 mg/kg of CP intraperitoneally to 6-week-old ICR mice, the mice were divided into four groups (control, CP, 1 mg/kg GH, and 2 mg/kg GH) with 10 mice in each group. GH was administered a week later for 7 days. Five mice from each group were sacrificed the next day, and their ovaries were collected for histological examination. T

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… Mice in the GH-treated group demonstrated an increase in the average number of estrous cycles, number of follicles, and number of corpus luteum significantly. Further, GH reduced apoptosis by inhibiting Fos and Jun signaling ( 31 ). …

NTP technical report on the toxicity studies of a Chemical Mixture of 25 Groundwater Contaminants Administered in Drinking Water to F344/N Rats and B6C3F(1) Mice.

Toxicity studies were performed with a chemically defined mixture of 25 groundwater contaminants, using dose levels considered to have envir … ut the 26- week drinking water studies. There were no effects on sperm morphology or motility or on estrous cycle length in rats or mice receiving the chemical mixture during the 26-week studies. Sperm concentration was decreased in F(1) CD-1(R) Swiss mice during continuous breeding studies, although there were no clear adverse effects on the fertility of Sprag …

Toxicology and carcinogenesis studies of sodium nitrite (CAS NO. 7632-00-0) in F344/N rats and B6C3F1 mice (drinking water studies).

UNLABELLED: Sodium nitrite is used as a color fixative and preservative in meats and fish. It is also used in manufacturing diazo dyes, nitr … e greater than those of the control groups. Sperm motility was decreased in 5000 ppm males, and the estrous cycles of 1500 and 5000 ppm females were significantly longer than in the controls. There were increased incidences of squamous cell hyperplasia of the forestomach in 5000 ppm males and females, extramedullary hematopoiesis of the spleen in 3000 and 5000 …