scholarly journals A ‘minimum dose’ of lipopolysaccharide required for implantation failure: assessment of its effect on the maternal reproductive organs and interleukin-1α expression in the mouse

Reproduction ◽  
2004 ◽  
Vol 128 (1) ◽  
pp. 87-97 ◽  
Author(s):  
Kaushik Deb ◽  
Madan M Chaturvedi ◽  
Yogesh K Jaiswal
Keyword(s):  
Pregnancy Loss ◽  
Biological Effects ◽  
Reproductive Organs ◽  
Implantation Failure ◽  
Gram Negative ◽  
Minimum Dose ◽  
Preimplantation Stage ◽  
Genital Tract Infections ◽  
Blastocyst Implantation ◽  
Tract Infections

Genital tract infections caused by gram-negative bacteria induce abortion and are one of the most common complications of human pregnancy. This study was carried out to decipher the mechanism of gram-negative bacterial lipopolysaccharide (LPS)-induced pregnancy loss, using a mouse (Park strain) model. Since many of the biological effects of LPS are mediated by interleukin (IL)-1α, the role of IL-1α in LPS-induced pregnancy loss was studied. Pregnant female animals were injected intra-peritoneally (i.p.) with different doses (1 to 50 μg) of LPS from Salmonella minnesota Re-595, on day 0.5 of pregnancy. We found that 250 μg/kg body weight (i.e. 5 μg/female mouse) of LPS when given on day 0.5 of pregnancy was the ‘minimum dose’ (MD) required to completely inhibit the implantation of the blastocyst in the mouse. The effect of this dose on the pathophysiology of the various reproductive organs (i.e. uterus, ectoplacental cones, developing fetus, ovaries etc.) was assessed on day 14 of pregnancy. The effects of this dose on the level and pattern of expression of the proinflammatory cytokine IL-1α in the maternal uterine horns and preimplantation stage embryos were studied by RT-PCR. A single dose (100 ng/mouse) of recombinant mouse IL-1α was given i.p. to pregnant females on day 1 of pregnancy to study its effect on implantation. Our results show that treatment of the pregnant animals with LPS may alter cell proliferation and induce leukocyte infiltration, degeneration of luminal glandular epithelium, and hyperplasia in the various reproductive organs, and may also alter both embryonic and uterine IL-1α expression. IL-1α administration also caused implantation failure similar to that of LPS. The observations suggest that the determined MD of LPS may alter the expression of developmentally important proinflammatory cytokines such as IL-1α, which could, in turn, inhibit the normal processes of blastocyst implantation. Therefore, it is proposed that the LPS-induced histopathological alterations in the various reproductive organs of pregnant animals could be mediated by IL-1α and this may be one of the causes of failure of blastocyst implantation in the mouse.

scholarly journals Gram-Negative Bacterial LPS Induced Poor Uterine Receptivity and Implantation Failure in Mouse: Alterations in IL-1β Expression in the Preimplantation Embryo and Uterine Horns

2005 ◽  
Vol 13 (3) ◽  
pp. 125-133 ◽  
Author(s):  
Kaushik Deb ◽  
Madan Mohan Chaturvedi ◽  
Yogesh Kumar Jaiswal
Keyword(s):  
Cross Sections ◽  
Pregnancy Loss ◽  
Embryo Implantation ◽  
Preimplantation Embryos ◽  
Soluble Form ◽  
Implantation Failure ◽  
Perinatal Complications ◽  
Uterine Receptivity ◽  
Gram Negative ◽  
Blastocyst Implantation

Genito-urinary tract or systemic infections of the gram-negative bacteria in pregnant women, causes abortions, preterm labor, and several other perinatal complications. LPS is the most potent antigenic component of the gram-negative bacterial cell wall and is known to modulate the expression of various proinflammatory cytokines. Here we investigate the role of the soluble form of IL-1 i.e., IL-1β in the ‘minimum dose’ of LPS induced pregnancy loss in mice. Uterine cross-sections on each day of the preimplantation period of pregnancy were examined histopathologically for finding out LPS induced changes in the uterine preparation for embryo implantation. The expression of IL-1β in the various stages of the preimplantation period of pregnancy was studied by RT-PCR in the embryos and the uterine horns of the LPS treated and normal pregnant mice. We found that LPS significantly alters the proliferation of the glandular epithelium, luminal epithelium and stroma during the preimplantation period. We also found large infiltration of macrophages into the uterine horns of the LPS treated animals. The level and pattern of IL-1β expression in the preimplantation embryos and uterine horns were also altered in LPS treated animals. These observations indicate that LPS can alter the uterine preparation for blastocyst implantation, which could be due to the change in the IL-1β expression in the uterine horns. However, a change in the expression pattern of IL-1β in the preimplantation embryos underlines the significance of this molecule in LPS induced pregnancy loss or implantation failure in mouse.

Lipopolysaccharide-induced modulation in the expression of progesterone receptor and estradiol receptor leads to early pregnancy loss in mouse

Zygote ◽  
2012 ◽  
Vol 21 (4) ◽  
pp. 337-344 ◽  
Author(s):  
Varkha Agrawal ◽  
Mukesh Kumar Jaiswal ◽  
Yogesh Kumar Jaiswal
Keyword(s):  
Progesterone Receptor ◽  
Pregnancy Loss ◽  
Steroid Receptors ◽  
Gram Negative Bacteria ◽  
Implantation Failure ◽  
Early Pregnancy Loss ◽  
Chain Reaction ◽  
Gram Negative ◽  
Estradiol Receptor ◽  
Polymerase Chain

SummaryThe objective of the present study was to investigate the effect of Gram-negative bacteria infection on ovarian steroid receptors, i.e. progesterone receptor (PR) and estradiol receptor (ER) during preimplantation days of pregnancy. A well established mouse model of Gram-negative bacteria infection was used to test this objective. Mice were treated with normal saline or lipopolysaccharide (LPS) on day 0.5 of pregnancy and used to collect embryos and uterine horns on day 1.5 to day 4.42 preimplantation day of pregnancy. Total RNA was extracted and reverse-transcription polymerase chain reaction (PCR) was performed to check the expression of PR and ER genes. The mRNA expression of PR and ER was altered in embryos and uterus of LPS-treated animals during preimplantation days of pregnancy studied. These results suggest that PR and ER play an important role in Gram-negative bacteria infection and induced implantation failure in mouse.

Healthcare associated infections caused by non-fermenting Gram negative rods (NFGNR): six years of experience of a tertiary hospital

2013 ◽  
Vol 7 (2) ◽  
pp. 06-12
Author(s):  
Zahidul Hasan ◽  
Md. Kamrul Islam ◽  
Arifa Hossain
Keyword(s):  
Blood Stream Infection ◽  
Tertiary Care ◽  
Blood Stream ◽  
Tertiary Hospital ◽  
Healthcare Associated Infections ◽  
Care Hospital ◽  
Gram Negative ◽  
Acinetobacter Spp ◽  
Tract Infections ◽  
Healthcare Associated

Recently non-fermenting Gram negative rods (NFGNR) are playing an important role in healthcare associated infections. This observational study in a tertiary care hospital of Dhaka city conducted during 01August 2007 to 30 June 2013 found that 34.8% isolated organisms from patients with healthcare associated infections were NFGNR. Majority (74.3 %) of these infections were occurring inside critical care areas. Pseudomonas and Acinetobacter together constituted 79.6% of the total NFGNR whereas Burkholderia cephacia complex (15.4%), Stenotrophomonas (4.3%) and Chryseobacterium species (0.7%) combined constituted remaining 20.4%. Out of total NFGNRs, Pseudomonas was responsible for highest number of catheter associated urinary tract infections (55.6%), ventilator associated pneumonia (46.3%), respiratory tract infection (65.8%) and surgical site infection (70.6%). Blood stream infection was predominantly caused by Burkholderia cephacia complex (33.5%) and Acinetobacter spp. (39.5%). Other than colistin most of the organisms were resistant to antibiotics commonly recommended for NFGNR.DOI: http://dx.doi.org/10.3329/bjmm.v7i2.19326 Bangladesh J Med Microbiol 2013; 07(02): 6-12

Morphological features of endo- and myometrium in patients with uterine leiomyoma and infertility

2020 ◽  
pp. 33-37
Author(s):  
M.A. Flaksenberg ◽  
◽  
Keyword(s):  
Uterine Leiomyoma ◽  
Negative Impact ◽  
Reproductive Function ◽  
Cell Types ◽  
Underlying Disease ◽  
Reproductive Organs ◽  
Pathological Process ◽  
Simple Type ◽  
Morphological Examination ◽  
Blastocyst Implantation

The objective: determination of morphofunctional features of leiomatous nodes and endometrium in women with uterine leiomyoma and infertility to restore reproductive function and prevent recurrence of the underlying disease. Materials and methods. In order to restore reproductive function and prevent recurrence of the underlying disease, morphofunctional features of leiomatous nodes and endometrium in women with uterine leiomyoma and infertility were determined. Thirty samples of leiomyomatous nodes and endometrium were examined, among which 15 were obtained from women with multiple uterine leiomyoma and infertility and 15 samples from women with uterine leiomyoma with isolated uterine leiomyoma. During the study, a general-histological method was used for staining with hematoxylin-eosin and picrofuxin by van Gizon, as well as immunohistochemical methods. Histological examination of the endometrium was performed according to conventional protocol, taking into account the day of the menstrual cycle and R.W. Noyes criteria. Results. In the morphological examination of leiomyomatous nodes in the vast majority of cases the presence of uterine leiomyomas of simple and cell types or their combination was established. In women with multiple uterine leiomyoma, simple-type leiomyoma (53.3%) was predominant, and in patients with isolated leiomyoma the signs of cellular uterine leiomyoma (66.7%) were more frequently found. In 80.0% of women with uterine leiomyoma revealed pathology of the endometrium, such as glandular and glandular-fibrous polyps, simple and complex atypical endometrial hyperplasia, which confirms the theory about the only pathogenetic mechanisms of the emergence of hyperplastic processes of female organs. In 66.7% of women with multiple leiomyomas, signs of chronic endometritis have been found, which exacerbates the pathological process and can have a negative impact on the reproductive function, such as secretory endometrial transformation and impaired blastocyst implantation, and explains a much higher percentage of infertility in the group. Conclusion. In women with impaired reproductive function, patients with uterine leiomyoma, it is necessary to conduct a study of the receptivity of the reproductive organs, namely - the endometrium and leiomatous nodes. This will make it possible to use one or another method of treatment in order to restore reproductive function and prevent recurrence of the underlying disease. Keywords: infertility, uterine leiomyoma, endometrium, receptive apparatus.

RESULTS OF LOWER GENITAL TRACT INFECTION INTERVENTION AMONG KHMER WOMEN OF CHILDBEARING AGE IN CAN THO IN 2016

2018 ◽  
pp. 83-89
Author(s):  
Trung Thuan Phan ◽  
Dinh Binh Tran ◽  
Thanh Hue Dinh ◽  
Phong Son Dinh ◽  
Kieu Oanh Truong ◽  
...  
Keyword(s):  
Genital Tract ◽  
Common Knowledge ◽  
Intervention Group ◽  
Effective Intervention ◽  
Control Group ◽  
Childbearing Age ◽  
Lower Genital Tract ◽  
Genital Tract Infections ◽  
Tract Infections ◽  
Can Tho City

Objectives: To find a model that is effective intervention to reduce the incidence of lower genital tract infections in Khmer women. Subjects and Methods: The intervention study is carried which compared the test group with the control group of 400 Khmer women, aged 15 to 49 in Can Tho city. Results: The common knowledge of the prevention of lower genital tract infections in the intervention group increased from 30.9% in the control group to 54.5% in the intervention group. The general attitude toward the use of lower genital tract infections increased from 22.3% in the control group to 78.0% in the intervention group. This is a very significant improvement. The prevalence of subclinical infection of the intervention group (26.0%) was significantly lower than that of the control group (39.3%), the difference was statistically significant. Conclusion: Intervention effectiveness is good in both knowledge, attitudes and practices, especially the effectiveness of interventions in practice in Khmer women. Key words: Effective intervention, lower genital tract infections, Khmer women, Can Tho city

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