Search Results

You are looking at 11 - 20 of 336 items for :

  • endometrium x
  • Refine by access: All content x
Clear All
Douglas A Gibson Centre for Inflammation Research, The University of Edinburgh, Edinburgh Bioquarter, Edinburgh, UK

Search for other papers by Douglas A Gibson in
Google Scholar
PubMed
Close
,
Ioannis Simitsidellis Centre for Inflammation Research, The University of Edinburgh, Edinburgh Bioquarter, Edinburgh, UK

Search for other papers by Ioannis Simitsidellis in
Google Scholar
PubMed
Close
,
Frances Collins Centre for Inflammation Research, The University of Edinburgh, Edinburgh Bioquarter, Edinburgh, UK

Search for other papers by Frances Collins in
Google Scholar
PubMed
Close
, and
Philippa T K Saunders Centre for Inflammation Research, The University of Edinburgh, Edinburgh Bioquarter, Edinburgh, UK

Search for other papers by Philippa T K Saunders in
Google Scholar
PubMed
Close

Introduction In women, the endometrium is divided into an inner/luminal functional layer (‘functionalis’) and a basal layer (‘basalis’). On its inner (luminal) aspect, columnar epithelial cells form a boundary between the fluid-filled uterine

Free access
Hwa-Yong Lee Laboratory of Reproductive Endocrinology, Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
Department of Physiology and Genetic Regulation, National Institute of Agrobiological Sciences, Ibaraki 305-0901, Japan
Departments of Food Technology and
Reproductive Immunology, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn 10-747, Poland
Department of Agricultural and Life Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan

Search for other papers by Hwa-Yong Lee in
Google Scholar
PubMed
Close
,
Tomas J Acosta Laboratory of Reproductive Endocrinology, Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
Department of Physiology and Genetic Regulation, National Institute of Agrobiological Sciences, Ibaraki 305-0901, Japan
Departments of Food Technology and
Reproductive Immunology, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn 10-747, Poland
Department of Agricultural and Life Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan

Search for other papers by Tomas J Acosta in
Google Scholar
PubMed
Close
,
Michiyo Tanikawa Laboratory of Reproductive Endocrinology, Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
Department of Physiology and Genetic Regulation, National Institute of Agrobiological Sciences, Ibaraki 305-0901, Japan
Departments of Food Technology and
Reproductive Immunology, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn 10-747, Poland
Department of Agricultural and Life Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan

Search for other papers by Michiyo Tanikawa in
Google Scholar
PubMed
Close
,
Ryosuke Sakumoto Laboratory of Reproductive Endocrinology, Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
Department of Physiology and Genetic Regulation, National Institute of Agrobiological Sciences, Ibaraki 305-0901, Japan
Departments of Food Technology and
Reproductive Immunology, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn 10-747, Poland
Department of Agricultural and Life Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan

Search for other papers by Ryosuke Sakumoto in
Google Scholar
PubMed
Close
,
Junichi Komiyama Laboratory of Reproductive Endocrinology, Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
Department of Physiology and Genetic Regulation, National Institute of Agrobiological Sciences, Ibaraki 305-0901, Japan
Departments of Food Technology and
Reproductive Immunology, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn 10-747, Poland
Department of Agricultural and Life Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan

Search for other papers by Junichi Komiyama in
Google Scholar
PubMed
Close
,
Yukari Tasaki Laboratory of Reproductive Endocrinology, Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
Department of Physiology and Genetic Regulation, National Institute of Agrobiological Sciences, Ibaraki 305-0901, Japan
Departments of Food Technology and
Reproductive Immunology, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn 10-747, Poland
Department of Agricultural and Life Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan

Search for other papers by Yukari Tasaki in
Google Scholar
PubMed
Close
,
Mariusz Piskula Laboratory of Reproductive Endocrinology, Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
Department of Physiology and Genetic Regulation, National Institute of Agrobiological Sciences, Ibaraki 305-0901, Japan
Departments of Food Technology and
Reproductive Immunology, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn 10-747, Poland
Department of Agricultural and Life Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan

Search for other papers by Mariusz Piskula in
Google Scholar
PubMed
Close
,
Dariusz J Skarzynski Laboratory of Reproductive Endocrinology, Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
Department of Physiology and Genetic Regulation, National Institute of Agrobiological Sciences, Ibaraki 305-0901, Japan
Departments of Food Technology and
Reproductive Immunology, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn 10-747, Poland
Department of Agricultural and Life Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan

Search for other papers by Dariusz J Skarzynski in
Google Scholar
PubMed
Close
,
Masafumi Tetsuka Laboratory of Reproductive Endocrinology, Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
Department of Physiology and Genetic Regulation, National Institute of Agrobiological Sciences, Ibaraki 305-0901, Japan
Departments of Food Technology and
Reproductive Immunology, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn 10-747, Poland
Department of Agricultural and Life Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan

Search for other papers by Masafumi Tetsuka in
Google Scholar
PubMed
Close
, and
Kiyoshi Okuda Laboratory of Reproductive Endocrinology, Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
Department of Physiology and Genetic Regulation, National Institute of Agrobiological Sciences, Ibaraki 305-0901, Japan
Departments of Food Technology and
Reproductive Immunology, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn 10-747, Poland
Department of Agricultural and Life Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan

Search for other papers by Kiyoshi Okuda in
Google Scholar
PubMed
Close

a target organ for GCs in some species. However, the roles of GCs in the bovine endometrium remain unknown. The endometrium is a complex tissue and mainly consists of epithelial and stromal cells ( Fortier et al. 1988 ). Although both types

Free access
M S Fernandes Institute of Reproductive and Developmental Biology, Wolfson & Weston Research Centre for Family Health, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
Inpharmatica Ltd, London Bioscience Innovation Centre, 2 Royal College Street, London NW1 0NH, UK
Biomedical Research Institute, Department of Biological Sciences, Warwick Medical School, University of Warwick, Coventry CV4 7AL, UK
Cancer Research-UK Labs and Section of Cancer Cell Biology, Department of Cancer Medicine, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
Endokrinologikum Hamburg, Falkenried 88, 20251 Hamburg, Germany

Search for other papers by M S Fernandes in
Google Scholar
PubMed
Close
,
V Pierron Institute of Reproductive and Developmental Biology, Wolfson & Weston Research Centre for Family Health, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
Inpharmatica Ltd, London Bioscience Innovation Centre, 2 Royal College Street, London NW1 0NH, UK
Biomedical Research Institute, Department of Biological Sciences, Warwick Medical School, University of Warwick, Coventry CV4 7AL, UK
Cancer Research-UK Labs and Section of Cancer Cell Biology, Department of Cancer Medicine, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
Endokrinologikum Hamburg, Falkenried 88, 20251 Hamburg, Germany

Search for other papers by V Pierron in
Google Scholar
PubMed
Close
,
D Michalovich Institute of Reproductive and Developmental Biology, Wolfson & Weston Research Centre for Family Health, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
Inpharmatica Ltd, London Bioscience Innovation Centre, 2 Royal College Street, London NW1 0NH, UK
Biomedical Research Institute, Department of Biological Sciences, Warwick Medical School, University of Warwick, Coventry CV4 7AL, UK
Cancer Research-UK Labs and Section of Cancer Cell Biology, Department of Cancer Medicine, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
Endokrinologikum Hamburg, Falkenried 88, 20251 Hamburg, Germany

Search for other papers by D Michalovich in
Google Scholar
PubMed
Close
,
S Astle Institute of Reproductive and Developmental Biology, Wolfson & Weston Research Centre for Family Health, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
Inpharmatica Ltd, London Bioscience Innovation Centre, 2 Royal College Street, London NW1 0NH, UK
Biomedical Research Institute, Department of Biological Sciences, Warwick Medical School, University of Warwick, Coventry CV4 7AL, UK
Cancer Research-UK Labs and Section of Cancer Cell Biology, Department of Cancer Medicine, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
Endokrinologikum Hamburg, Falkenried 88, 20251 Hamburg, Germany

Search for other papers by S Astle in
Google Scholar
PubMed
Close
,
S Thornton Institute of Reproductive and Developmental Biology, Wolfson & Weston Research Centre for Family Health, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
Inpharmatica Ltd, London Bioscience Innovation Centre, 2 Royal College Street, London NW1 0NH, UK
Biomedical Research Institute, Department of Biological Sciences, Warwick Medical School, University of Warwick, Coventry CV4 7AL, UK
Cancer Research-UK Labs and Section of Cancer Cell Biology, Department of Cancer Medicine, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
Endokrinologikum Hamburg, Falkenried 88, 20251 Hamburg, Germany

Search for other papers by S Thornton in
Google Scholar
PubMed
Close
,
H Peltoketo Institute of Reproductive and Developmental Biology, Wolfson & Weston Research Centre for Family Health, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
Inpharmatica Ltd, London Bioscience Innovation Centre, 2 Royal College Street, London NW1 0NH, UK
Biomedical Research Institute, Department of Biological Sciences, Warwick Medical School, University of Warwick, Coventry CV4 7AL, UK
Cancer Research-UK Labs and Section of Cancer Cell Biology, Department of Cancer Medicine, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
Endokrinologikum Hamburg, Falkenried 88, 20251 Hamburg, Germany

Search for other papers by H Peltoketo in
Google Scholar
PubMed
Close
,
E W-F Lam Institute of Reproductive and Developmental Biology, Wolfson & Weston Research Centre for Family Health, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
Inpharmatica Ltd, London Bioscience Innovation Centre, 2 Royal College Street, London NW1 0NH, UK
Biomedical Research Institute, Department of Biological Sciences, Warwick Medical School, University of Warwick, Coventry CV4 7AL, UK
Cancer Research-UK Labs and Section of Cancer Cell Biology, Department of Cancer Medicine, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
Endokrinologikum Hamburg, Falkenried 88, 20251 Hamburg, Germany

Search for other papers by E W-F Lam in
Google Scholar
PubMed
Close
,
B Gellersen Institute of Reproductive and Developmental Biology, Wolfson & Weston Research Centre for Family Health, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
Inpharmatica Ltd, London Bioscience Innovation Centre, 2 Royal College Street, London NW1 0NH, UK
Biomedical Research Institute, Department of Biological Sciences, Warwick Medical School, University of Warwick, Coventry CV4 7AL, UK
Cancer Research-UK Labs and Section of Cancer Cell Biology, Department of Cancer Medicine, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
Endokrinologikum Hamburg, Falkenried 88, 20251 Hamburg, Germany

Search for other papers by B Gellersen in
Google Scholar
PubMed
Close
,
I Huhtaniemi Institute of Reproductive and Developmental Biology, Wolfson & Weston Research Centre for Family Health, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
Inpharmatica Ltd, London Bioscience Innovation Centre, 2 Royal College Street, London NW1 0NH, UK
Biomedical Research Institute, Department of Biological Sciences, Warwick Medical School, University of Warwick, Coventry CV4 7AL, UK
Cancer Research-UK Labs and Section of Cancer Cell Biology, Department of Cancer Medicine, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
Endokrinologikum Hamburg, Falkenried 88, 20251 Hamburg, Germany

Search for other papers by I Huhtaniemi in
Google Scholar
PubMed
Close
,
J Allen Institute of Reproductive and Developmental Biology, Wolfson & Weston Research Centre for Family Health, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
Inpharmatica Ltd, London Bioscience Innovation Centre, 2 Royal College Street, London NW1 0NH, UK
Biomedical Research Institute, Department of Biological Sciences, Warwick Medical School, University of Warwick, Coventry CV4 7AL, UK
Cancer Research-UK Labs and Section of Cancer Cell Biology, Department of Cancer Medicine, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
Endokrinologikum Hamburg, Falkenried 88, 20251 Hamburg, Germany

Search for other papers by J Allen in
Google Scholar
PubMed
Close
, and
J J Brosens Institute of Reproductive and Developmental Biology, Wolfson & Weston Research Centre for Family Health, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
Inpharmatica Ltd, London Bioscience Innovation Centre, 2 Royal College Street, London NW1 0NH, UK
Biomedical Research Institute, Department of Biological Sciences, Warwick Medical School, University of Warwick, Coventry CV4 7AL, UK
Cancer Research-UK Labs and Section of Cancer Cell Biology, Department of Cancer Medicine, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
Endokrinologikum Hamburg, Falkenried 88, 20251 Hamburg, Germany

Search for other papers by J J Brosens in
Google Scholar
PubMed
Close

the endometrium that initially define a limited period of uterine receptivity (implantation window) and subsequently control differentiation of the stromal compartment (decidualization) ( Brosens et al. 1999 , Gellersen & Brosens 2003 ). This

Free access
Ioannis Simitsidellis Centre for Inflammation Research, The University of Edinburgh, Queen’s Medical Research Institute, Edinburgh BioQuarter, Edinburgh, UK

Search for other papers by Ioannis Simitsidellis in
Google Scholar
PubMed
Close
,
Arantza Esnal-Zuffiaure Centre for Inflammation Research, The University of Edinburgh, Queen’s Medical Research Institute, Edinburgh BioQuarter, Edinburgh, UK

Search for other papers by Arantza Esnal-Zuffiaure in
Google Scholar
PubMed
Close
,
Olympia Kelepouri Centre for Inflammation Research, The University of Edinburgh, Queen’s Medical Research Institute, Edinburgh BioQuarter, Edinburgh, UK

Search for other papers by Olympia Kelepouri in
Google Scholar
PubMed
Close
,
Elisabeth O’Flaherty Centre for Inflammation Research, The University of Edinburgh, Queen’s Medical Research Institute, Edinburgh BioQuarter, Edinburgh, UK

Search for other papers by Elisabeth O’Flaherty in
Google Scholar
PubMed
Close
,
Douglas A Gibson Centre for Inflammation Research, The University of Edinburgh, Queen’s Medical Research Institute, Edinburgh BioQuarter, Edinburgh, UK

Search for other papers by Douglas A Gibson in
Google Scholar
PubMed
Close
, and
Philippa T K Saunders Centre for Inflammation Research, The University of Edinburgh, Queen’s Medical Research Institute, Edinburgh BioQuarter, Edinburgh, UK

Search for other papers by Philippa T K Saunders in
Google Scholar
PubMed
Close

epithelial cells surrounding the lumen and glands of the endometrium, as well as the smooth muscle cells of the myometrium ( Simitsidellis et al. 2018 ). Studies in women and rodents have demonstrated that secretions from endometrial glands play a

Open access
Junie Hurette Chansi Kengni Groupe de Recherche en Biopathologies Cellulaires et Moléculaires, Département de Chimie-Biologie, Université du Québec à Trois-Rivières, CP 500, Trois-Rivières, Québec, G9A 5H7 Canada

Search for other papers by Junie Hurette Chansi Kengni in
Google Scholar
PubMed
Close
,
Isabelle St-Louis Groupe de Recherche en Biopathologies Cellulaires et Moléculaires, Département de Chimie-Biologie, Université du Québec à Trois-Rivières, CP 500, Trois-Rivières, Québec, G9A 5H7 Canada

Search for other papers by Isabelle St-Louis in
Google Scholar
PubMed
Close
,
Sophie Parent Groupe de Recherche en Biopathologies Cellulaires et Moléculaires, Département de Chimie-Biologie, Université du Québec à Trois-Rivières, CP 500, Trois-Rivières, Québec, G9A 5H7 Canada

Search for other papers by Sophie Parent in
Google Scholar
PubMed
Close
,
Valérie Leblanc Groupe de Recherche en Biopathologies Cellulaires et Moléculaires, Département de Chimie-Biologie, Université du Québec à Trois-Rivières, CP 500, Trois-Rivières, Québec, G9A 5H7 Canada

Search for other papers by Valérie Leblanc in
Google Scholar
PubMed
Close
,
Carl Shooner Groupe de Recherche en Biopathologies Cellulaires et Moléculaires, Département de Chimie-Biologie, Université du Québec à Trois-Rivières, CP 500, Trois-Rivières, Québec, G9A 5H7 Canada

Search for other papers by Carl Shooner in
Google Scholar
PubMed
Close
, and
Eric Asselin Groupe de Recherche en Biopathologies Cellulaires et Moléculaires, Département de Chimie-Biologie, Université du Québec à Trois-Rivières, CP 500, Trois-Rivières, Québec, G9A 5H7 Canada

Search for other papers by Eric Asselin in
Google Scholar
PubMed
Close

). Decidualization can be initiated only when the endometrium is receptive, and this only occurs during a short period in pregnancy. Several decades of investigations have showed that PGs are needed to trigger the events of blastocyst implantation. Implantation

Free access
K. YAMASHITA
Search for other papers by K. YAMASHITA in
Google Scholar
PubMed
Close

Lutwak-Mann (1955) and Pincus, Miyake, Merrill & Longo (1957) have shown that the carbonic anhydrase activity of the uterine endometrium in rabbits primed with oestrogen is mainly under progestin control. Since the activity increased roughly proportionally to that of proliferative development, determinations of endometrial carbonic anhydrase have been utilized as a quantitative test for progestational activity. In a previous paper (Yamashita & Kurouji, 1961 a), we suggested that certain androgens prevent the activating effect of progesterone on the endometrial carbonic anhydrase. However, Lutwak-Mann (1955) has demonstrated that methyltestosterone itself produces marked increases in the content of uterine carbonic anhydrase. The present observation was made to ascertain whether androgenic steroids affect the activity of endometrial carbonic anhydrase. The following androgens were tested: methyltestosterone, androstenedione, androstanolone, stigmasterol and β-sitosterol.

Immature albino rabbits, weighing approximately 1·5 kg., were used. Clauberg's (1930) method was modified in that the animals were primed with 5 μg.

Restricted access
S. ZUCKERMAN
Search for other papers by S. ZUCKERMAN in
Google Scholar
PubMed
Close
Restricted access
Shahenda M El-Naggar Department of Biochemistry and Molecular Biology,
Department of Pathology and
Department of Medicine,
Research Resource Center, University of Louisville, Louisville, Kentucky 40202, USA,
James Graham Cancer Center, University of Louisville, 580 South Preston St Baxter II, 324, Louisville, Kentucky 40202, USA

Search for other papers by Shahenda M El-Naggar in
Google Scholar
PubMed
Close
,
Mohammad T Malik Department of Biochemistry and Molecular Biology,
Department of Pathology and
Department of Medicine,
Research Resource Center, University of Louisville, Louisville, Kentucky 40202, USA,
James Graham Cancer Center, University of Louisville, 580 South Preston St Baxter II, 324, Louisville, Kentucky 40202, USA

Search for other papers by Mohammad T Malik in
Google Scholar
PubMed
Close
,
Alvin Martin Department of Biochemistry and Molecular Biology,
Department of Pathology and
Department of Medicine,
Research Resource Center, University of Louisville, Louisville, Kentucky 40202, USA,
James Graham Cancer Center, University of Louisville, 580 South Preston St Baxter II, 324, Louisville, Kentucky 40202, USA

Search for other papers by Alvin Martin in
Google Scholar
PubMed
Close
,
Joseph P Moore Department of Biochemistry and Molecular Biology,
Department of Pathology and
Department of Medicine,
Research Resource Center, University of Louisville, Louisville, Kentucky 40202, USA,
James Graham Cancer Center, University of Louisville, 580 South Preston St Baxter II, 324, Louisville, Kentucky 40202, USA

Search for other papers by Joseph P Moore in
Google Scholar
PubMed
Close
,
Mary Proctor Department of Biochemistry and Molecular Biology,
Department of Pathology and
Department of Medicine,
Research Resource Center, University of Louisville, Louisville, Kentucky 40202, USA,
James Graham Cancer Center, University of Louisville, 580 South Preston St Baxter II, 324, Louisville, Kentucky 40202, USA

Search for other papers by Mary Proctor in
Google Scholar
PubMed
Close
,
Tariq Hamid Department of Biochemistry and Molecular Biology,
Department of Pathology and
Department of Medicine,
Research Resource Center, University of Louisville, Louisville, Kentucky 40202, USA,
James Graham Cancer Center, University of Louisville, 580 South Preston St Baxter II, 324, Louisville, Kentucky 40202, USA

Search for other papers by Tariq Hamid in
Google Scholar
PubMed
Close
, and
Sham S Kakar Department of Biochemistry and Molecular Biology,
Department of Pathology and
Department of Medicine,
Research Resource Center, University of Louisville, Louisville, Kentucky 40202, USA,
James Graham Cancer Center, University of Louisville, 580 South Preston St Baxter II, 324, Louisville, Kentucky 40202, USA

Search for other papers by Sham S Kakar in
Google Scholar
PubMed
Close

associated with sustained levels of estrogen on the uterus ( Tang et al. 1984 ). These glands were cystically dilated and were filled with fluid (Fig. 8 , compare a and b with e and f). In some cases, these glands occupied the entire endometrium and

Free access
B. S. SETTY
Search for other papers by B. S. SETTY in
Google Scholar
PubMed
Close
,
MAN MOHAN SINGH
Search for other papers by MAN MOHAN SINGH in
Google Scholar
PubMed
Close
,
S. R. CHOWDHURY
Search for other papers by S. R. CHOWDHURY in
Google Scholar
PubMed
Close
, and
AMIYA B. KAR
Search for other papers by AMIYA B. KAR in
Google Scholar
PubMed
Close

SUMMARY

Sodium and potassium levels were determined in the rat endometrium and uterine washings during normal and 'delayed' implantation. Both endometrium and uterine washings of normal rats differed from those of 'delayed' animals in their electrolyte concentrations. A dose of oestradiol dipropionate (1 μg/rat) capable of inducing implantation in 'delayed' rats (ovariectomized and maintained on progesterone) did not evoke any significant changes in electrolyte concentration of either the endometrium or uterine washings. These findings are discussed in the light of a hypothesis regarding delayed implantation in rats.

Restricted access
S. C. Riley
Search for other papers by S. C. Riley in
Google Scholar
PubMed
Close
and
N. L. Poyser
Search for other papers by N. L. Poyser in
Google Scholar
PubMed
Close

ABSTRACT

The output of prostaglandin (PG) F from guinea-pig endometrium obtained on day 15 of the oestrous cycle and maintained in tissue culture was significantly (P<0·05) reduced by the use of Ca2+-depleted medium, EGTA (a Ca2+ chelator), 8-(N,N-diethyl-amino)octyl-3,4,5-trimethoxybenzoate hydrochloride (TMB-8; an intracellular Ca2+ antagonist), trifluoperazine (TFP) and N-(6-aminohexyl)-5-chloro-1-naphthalenesulphonamide (W-7; both calmodulin antagonists). Nifedipine inhibited PGF output at a concentration (100 μmol/l) much greater than that usually required to block Ca2+ channels. Verapamil had a small but significant (P < 0·05) inhibitory effect on PGF output at 10–100 μmol/l. The outputs of PGE2 and, to a lesser extent, 6-keto-PGF (the hydrated product of PGI2) were also reduced by using Ca2+-depleted medium. EGTA reduced the outputs of PGE2 and 6-keto-PGF on day 1 of culture, but stimulated 6-keto-PGF output on day 3 of culture. The outputs of PGE2 and 6-keto-PGF were increased by TMB-8 (100 μmol/l) on day 3 of culture and by TFP and, to a smaller extent, by W-7 on all 3 days of culture. Nifedipine (100 μmol/l by not 1 or 10 μmol/l) reduced the outputs of PGE2 and 6-keto-PGF on all 3 days of culture, whereas verapamil (100 μmol/l but not 1 or 10 μmol/l) increased the outputs of these two prostaglandins on days 2 and 3 of culture. Phorbol 12-myristate 13-acetate (an activator of protein kinase C) had no effect on the outputs of PGF, PGE2 and 6-keto-PGF from cultured guineapig endometrium obtained on days 7 and 15 of the oestrous cycle. It is concluded that extracellular Ca2+ is necessary for the high output of PGF from the guinea-pig uterus after day 11 of the oestrous cycle, and that the action of Ca2+ is not potentiated by the activation of protein kinase C.

J. Endocr. (1987) 113, 463–471

Restricted access