Mini Review
Creative Commons, CC-BY
Trypanosoma Cruzi Experimental Infection and COVID-19: Similar Cardiovascular Syndrome?
*Corresponding author: Gabriel Oliveira, Cell Biology Laboratory, Oswaldo Cruz Institute, Oswaldo Cruz Fundation, Av. Brasil, 4365 – Rio de Janeiro, Brasil.
Received: May 06, 2021; Published: June 01, 2021
DOI: 10.34297/AJBSR.2021.13.001832
Abstract
Dr. Carlos Chagas, in 1909, published his notable discovery, a new pathology denominated Chagas disease. He was able to identify: etiologic agent, the protozoan Trypanosoma cruzi, its biological cycle and your pathogenesis: etiologic agent, the protozoan T. cruzi its biological cycle and your pathogenesis. However, to date, there is still no vaccine or effective treatment for the symptomatic chronic phase. In 2019, a new Severe Acute Respiratory Syndrome, promoted by a member of the Coronavirus family, emerged in Wuhan (China province), whose origin has not yet been totally elucidate. SARS-Cov-2 or COVID-19 is characterize by high transmissibility and high morbidity. Thus, in 2020 it became a global pandemic. Highlights into similarities between a neglected disease, which affects 40.000 new cases per year and intense research for a vaccine and treatment using experimental models and severe COVID-19 infection, with millions of victims, by evolution to cardiovascular disturbance, mainly through its target point to ACE2 enzyme. To compare acute T. cruzi experimental infection in mice, the cardiorenal axis involvement and suggest possible common points to research about serious course of the COVID- 19 infection and cardiovascular involvement.
Keywords: Trypanosoma cruzi; Murine model; Cardiovascular; COVID-19
Introduction
Chagas disease
Trypanosoma Infection: Dr. Carlos Chagas, in 1909, published his notable discovery, a new pathology denominated Chagas disease [1]. An unprecedented medicine feat, he was able to identify: etiologic agent, the protozoan Trypanosoma cruzi, its biological cycle and your pathogenesis [2]. This disease affects a large part of the world population in a situation of social vulnerability, considered a neglected disease (NTDs) [3]. Actions to control the endemic infection of T. cruzi were perform, such as the eradication of its invertebrate vector (by Triatoma infestans) and required testing in blood donnors [4-6]. As described by Moncayo & Silveira (2009) the Latin Amerca incidence of Chagas disease has dropped from 700.00 to 40.000 new cases per year [6]. Death number per year is between 45.000 to 12.500 patients deaths6. The main route of transmission is still vector through the bite of insects popularly called “Barbeiro”, “Chupança” or “Vinhuca”. However, its infectious form, the metacyclic trypomastigote, can be found in natural foods, such as açaí, bacaba and fruit pulps, increasing its risk of transmission through oral contamination [7,8]. The classic pathogenesis has two distinct phases: the acute phase, characterized by mild, non-specific symptoms [6-8], in which approximately 10% of all patients have severe myocarditis, with 90% of these having an unfavorable prognosis [9]. Approximately 20 to 30% of infected patients will develop the symptomatic chronic phase, which is the most severe, with severe cardiac involvement due to chronic myocardiopathy and the presence of dilations in digestive organs, such as the megaesophagus and megacolon [3,10]. According Lizzeti et, al., (2019) he only drugs available for the treatment of T. cruzi infection are nifurtimox and benznidazole [10]. However, currently benznidazole is the most widely used drug, however it is not effective during the chronic symptomatic phase of the disease and can promote serious side effects, especially in infants [10,11]. Moreover, to date, no other drug has had a trypanocidal efficacy similar to benznidazole and we still do not have a vaccine, despite more than 100 years of disease research [11-13].
The experimental mouse model, depending on the binomial of infection, mouse lineage & parasite strain becomes more susceptible or resistant to infection14. However, it allows the investigation of several aspects of the pathogenesis of T. cruzi infection in a relatively short period of time. In addition, due to its genetic homology to the human being, several approaches can be clarified, such as immunological response, cardiac remodeling and preclinical tests for the evaluation of experimental chemotherapies in the search for an effective compound for the treatment of chagasic patients [14,15].
State-of-Art
The preclinical study of T. cruzi infection, since 1909, demonstrated a diverse use of biomodels, such as mice, rats, dogs and opossums [25]. However, with the refinement of techniques and the use of transgenic models using the mouse model, it became possible, especially in Outbred Stock mice, to evaluate, in a short period of time, the evolution of the acute phase, the symptoms in the chronic phase and the effectiveness of experimental compounds, more closely the possibility of translating the results to the patient with reliability [17]. However, experimental murine infection, in the acute and chronic phase, has always had a primary focus on cardiac involvement and the, still unknown, mechanism to which asymptomatic patients develop Chagas’ heart disease [27]. Experimental infection by COVID-19 still requires unconventional models in the science of laboratory animals, such as ferrets and humanized mice Taconic and Jackson Labs developed: Tbd, expressing human ACE2; Ace2 knockout, ACE2 Low expression and K18-hACE2- ACE2 expression; Tmprss2 Knockout; Stat1 knockout. Standards murine lineages as Balbc, C57Bl6 agedependent develop clinical illnesses, including irregular interstitial pneumonia [28]. The conception of this review was based on the hypothesis of possible similarities between the use and evaluation of the experimental mouse biomodel in both infections, both by the parasite and the viral. We are convinced that, among striking differences, the use of the mouse biomodel in both infections is not contemplating the elements of the complex network associated between the various biological systems, such as only the cardiac involvement in T. cruzi infection and the involvement of the lung in the case of COVID-19.
Compilation and Reflections
According to Yuki et. Al. [16] the severity criteria for COVID-19 infection are determined by
1. Asymptomatic COVID: Without any clinical symptoms imaging
diagnosis normal.
2. Mild Acute: Uupper respiratory tract syntomd as: fever, fatigue,
myalgia, cough, sore throat, runny nose, sneezing or digestive
symptoms.
3. Moderate Respiratory: with fever, cough, hypoxemia and
imaging chest test positive.
4. Severe Respiratory: severe hypoxemia
5. Systemic complications: severe pneumonia, heart failure,
cardiovascular shock; encephalopathy and acute kidney injury
[16].
In the experimental study of acute T. cruzi infection in mice one of the most susceptible binomials is the Balbc lineage & Y strain infection. It promotes high mortality due to the severity of acute myocarditis and is a widely used model for assessing the immune response. Our research group demonstrated that before the evolution of acute myocarditis there is, even during the presence of parasites in the blood, a marked, but transient, acute kidney injury [29,30]. We evaluated, in vitro, the several types infection of renal cells infected by T. cruzi and observed that there was an inverse relationship, mainly in mesangial cells, that the presence of the parasite, not necessarily replicating in renal tissue, increased the oxide nitric levels in the cell culture supernatant, as well as cytokine TNF [30]. At the cellular level, this may be one of the explanations for the early acute kidney injury and its consequences, such as the drop in blood pressure and the perception of the justaglomerular apparatus (immunocomplex deposition) [31], activating the reninangiotensin- aldosterone system (RAAS).
The activated RAAS can perform several systemic effects, such as vasoconstriction, in this case, as a positive feedback to the perception of a decreased in cardiovascular pressure, endothelial and cardiac muscle remodeling [32]. Our in vivo investigation has shown that the use of multi-stage RAAS blockers (losartan, captopril and spironolactone), directly interfere in increasing the animals’ survival, which suggests that not only is acute myocarditis the cause of death of the animals, but rather the influence of the renal-cardio axis associated with the severity of the acute inflammatory response in the heart muscle [33]. Interestingly, the use of spironolactone significantly minimized the mortality of mice infected with T. cruzi [33]. Our theory, still in studies, would be that the parasite, inside the organism, promotes some type of toxicity, ancient manuscripts describe the possibility of chagastoxin [34,35]. Thus, we would have an association between acute kidney injury, histopathological analysis showed glomerular IgM deposits [29], changes in the cardiovascular and endothelial system, myocardial inflammatory response due to parasitic multiplication, evolution to cardiogenic shock and death of the animal [36]. Spironolactone suggests minimizing the effects of this possible parasite endo or exotoxin, decreased vasodilation, or loss of elasticity of the endothelium, balancing blood pressure in the vessels and avoiding cardiogenic shock [37,38]. Melnikov et al. [39] described that, during different phases, T. cruzi infection can be observed in lungs. The parasite presence were were accompanied by mononuclear inflammatory infiltrate promoted compromised in the alveoli walls and lung hemorrhage [39,40].
Ingraham et al. [41] suggest RAAS inhibition decreases COVID-19 lung injury and improves survival, while simultaneously decreasing viral load in animal models with viral infections that utilize the ACE2 receptor [38]. Experimental acute T. cruzi infection, showed that RAAS-block throught use (before infection) of multistage RAAS blockers (losartan, captopril and spironolactone), directly interfere in increasing the animals’ survival, which suggests that not only is acute myocarditis the cause of death of the animals, but rather the influence of the renal-cardio axis associated with the severity of the acute inflammatory response in the heart muscle [33]. So, when we compare both infections and the serious stage of COVID-19, it suggests that the key mechanism we should be looking at would be the modulation of the RAAS. Mainly using an initial system blocker such as Aliskiren that blocks Renin’s conversion [41].
Conclusions
In this review, we do not intend to compare or suggest translate of the infection and the relationship between the evolution and severity of COVID-19 with the experimental T. cruzi infection. Our goal is for our observation and knowledge of both infections, and the long experience in the development of the science of laboratory animals, to propose key points that can be used by other research groups in the search for the mitigation of this terrible pandemic and in some way, we are prepared for others broad-spectrum viral, bacterial, parasitic infections that could become a global public health problem [42].
We believe, in addition to physical structures, personal training and an increase in the technological and scientific political development, that at the laboratory level, using animals for scientific purposes, some chalenges are important at this moment:
1. Development of a murine model, a mouse biomodel, capable
of developing in house facilities the COVID-19 infection in a
similar way to critically ill patients.
2. Refine biomodel assessment techniques, primarily by using
equipment that enables the assessment of environmental and
controlled transmissibility of the virus, not only susceptibility
to intranasal inoculations.
3. Use techniques and procedures that are closest to those used
by humans, especially at the critical and systemic level of
infection, such as endothelial changes, thromboembolism and
pulmonary embolism.
4. Possibility of quickly, reproducibly and reliably testing
experimental therapies, acute and chronic toxicity of new
compounds (or repositioning of drugs) and vaccines.
Finally, we would like to affirm that the identification of kidney injury in mice infected with T. cruzi during the acute phase was relevant because, in many moments, we “close” the focus on an organ or system and as the infection by COVID-19, we must observe the genesis of the pathology in a complex interconnected system, because in both cases, the infection will progress to cardiovascular shock and multiple organ failure.
Sharing one of our hypotheses, we believe that, as already observed, patients infected in the acute phase are also presenting with acute kidney injury. Would there be a possibility that the cardio-renal axis is involved in 20 to 30% of the population that has severe cardiac symptoms in the chronic phase of Chagas disease? So, research on the cardiovascular system in critically ill patients infected with COVID-19, can be a field of study, primarily to save the lives of these patients, but used to increase knowledge of the genesis of cardiovascular syndromes, such as thrombosis, strokes and others.
Epigenetic Regulation of Long non-coding RNAs on the ECM in pPROM
Long non-coding RNAs (lncRNAs) are long single-stranded RNAs with no translational potential. LncRNAs function in regulating epigenetic and cellular processes through various mechanisms. By analyzing the present available studies of lncRNA transcripts within the reproductive system and the current understanding of the biology of lncRNAs, the important diagnostic and therapeutic roles of lncRNAs in the etiology of reproductive disorders have been illustrated [100]. LncRNA is a mediator of the outcomes of interaction at the maternal–fetal interface and in the biological mechanisms underlying trophoblast differentiation [101,102]. In addition to miscarriage, intrauterine grown retardation, preeclampsia, and gestational diabetes mellitus [103,104], a pathogenic role for lncRNA has been observed in human sPTB, wherein the epigenetic regulatory function of lncRNA was found to link social and environmental exposures and the outcome of pregnancy [105,106]. Down-regulation of lncRNAs on laminin, collagens, VLAα10, OPN, α6β1, and α/βDG, which also implied that these lncRNAs may be significant for the decreased synthesis of mRNA and leaded to weakening of the ECM. Several co-differentially expressed pairs of lncRNA–mRNA sharing the same genomic loci in sPTB were recognized as being associated with the infectioninflammation pathway and ubiquitine-proteasome system [107].
Conclusion
The above experimental and clinical data have identified the causal nature of intrauterine infection and cervix vaginal infection in explaining the progress of sPTB and pPROM. The inflammatory response can lead to the activation of mechanisms and resulting in labour. But in some cases, pregnancy with the infection can maintain to term without complications. In other cases, the major event is activation of myometrial movement, leading to the risk of sPTB. In other cases, the primary outcome is the secretion of MMP from fetal membranes, resulting in pPROM. Therefore, a better understanding of the relationship between the ECM and the pPROM remains limited and is elucidated to shed light on effective strategies to provide opportunities to prevent the potential risk of pPROM during pregnancy.
Conflict of Interest
No conflict of interest declared.
Acknowledgement
This study is supported in part by the New York State Research Foundation for Mental Hygiene (914-3280, 914-3257), and the National Institutes of Health (R01 HD094381)..
References
- Liu L, Oza S, Hogan D, Perin J, Rudan I, et al. (2015) Global, regional, and national causes of child mortality in 2000-13, with projections to inform post-2015 priorities: an updated systematic analysis. Lancet 385(9966): 430-440.
- Oyen ML, Calvin SE, Landers DV (2006) Premature rupture of the fetal membranes: is the amnion the major determinant? Am J Obstet Gynecol 195(2): 510-515.
- Egeblad M, Rasch MG, Weaver VM (2010) Dynamic interplay between the collagen scaffold and tumor evolution. Curr Opin Cell Biol 22(5): 697-706.
- Whitley GS, Cartwright JE (2010) Cellular and molecular regulation of spiral artery remodelling: lessons from the cardiovascular field. Placenta 31(6): 465-474.
- Timmons B, Akins M, Mahendroo M (2010) Cervical remodeling during pregnancy and parturition. Trends Endocrinol Metab 21(6): 353-361.
- Mercer BM (2011) Preterm premature rupture of the membranes. Obstet Gynecol 101(1): 178-193.
- Clark IM, Swingler TE, Sampieri CL, Edwards DR (2008) The regulation of matrix metalloproteinases and their inhibitors. Int J Biochem Cell Biol 40(6-7): 1362-1378.
- Hynes RO (2009) The extracellular matrix: not just pretty fibrils. Science 326(5957): 1216-1219.
- Ricard-Blum S, Ballut L (2011) Matricryptins derived from collagens and proteoglycans. Front Biosci 16: 674-697.
- Engel J, Hans Peter B (2005) Structure, stability and folding of the collagen triple helix. Top Curr Chem 247: 7-33.
- Brinckmann J (2005) Collagens at a Glance. Top Curr Chem 247: 1-6.
- Veit G, Kobbe B, Keene DR, Paulsson M, Koch M, et al. (2005) Collagen XXVIII, a Novel von Willebrand Factor A Domain-containing Protein with Many Imperfections in the Collagenous domain. J Biol Chem 281(6): 3494-3504.
- Neptune ER, Frischmeyer PA, Arking DE, Myers L, Bunton TE, et al. (2003) Dysregulation of TGF-|[beta]| activation contributes to pathogenesis in Marfan syndrome. Nat Genet 33(3): 407-411.
- Kaartinen V, Warburton D (2003) Fibrillin controls TGF-β activation. Nat Genet 33(3): 331-332.
- Sengle G, Charbonneau NL, Ono RN, Sasaki T, Alvarez J, et al. (2008) Targeting of Bone Morphogenetic Protein Growth Factor Complexes to Fibrillin. J Biol Chem 283(20): 13874-13888.
- Kielty CM, Sherratt MJ, Shuttleworth CA (2002) Elastic fibres. J Cell Sci 115 (Pt 14): 2817-2828.
- Wright RR (1961) Elastic tissue of normal and emphysematous lungs. A tridimensional histologic study. Am J Pathol 39(3): 355-367.
- Wagenseil JE, Mecham RP (2009) Vascular Extracellular Matrix and Arterial Mechanics. Physiol Rev 89(3): 957-989.
- Hastings JF, Skhinas JN, Fey D, Croucher DR, Cox TR (2019) The extracellular matrix as a key regulator of intracellular signalling networks. Br J Pharmacol 176(1): 82-92.
- Forslund K, Sonnhammer EL (2012) Evolution of protein domain architectures. Methods Mol Biol 856: 187-216.
- Malak TM, Ockleford CD, Bell SC, Dalgleish R, Bright N, et al. (1993) Confocal immunofluorescence localization of collagen types I, III, IV, V and VI and their ultrastructural organization in term human fetal membranes. Placenta 14(4): 385-406.
- Aplin JD, Campbell S, Allen TD (1985) The extracellular matrix of human amniotic epithelium: Ultrastructure, composition and deposition. J Cell Sci 79: 119-136.
- Bryant-Greenwood GD (1998) The extracellular matrix of the human fetal membranes: Structure and function. Placenta 19(1): 1-11.
- Iozzo RV (2005) Basement membrane proteoglycans: from cellar to ceiling. Nat Rev Mol Cell Biol 6(8): 646-656.
- Kim SH, Turnbull J, Guimond S (2011) Extracellular matrix and cell signalling: the dynamic cooperation of integrin, proteoglycan and growth factor receptor. J Endocrinol 209(2): 139-151.
- Bishop JR, Manuela S, Esko JD (2007) Heparan sulphate proteoglycans fine-tune mammalian physiology. Nature 446(7139): 1030-1037.
- Culp LA, Murray BA, Rollins BJ (1979) Fibronectin and proteoglycans as determinants of cell-substratum adhesion. J Supramol Struct 11(3): 401-427.
- Jahed Z, Shams H, Mehrbod M, Mofrad MR (2014) Mechanotransduction pathways linking the extracellular matrix to the nucleus. Int Rev Cell Mol Biol 310: 171-220.
- Sabatier L, Chen D, Fagotto-Kaufmann C, Hubmacher D, McKee MD, et al. (2009) Fibrillin Assembly Requires Fibronectin. Mol Biol Cell 20(3): 846-858.
- Miner JH, Yurchenco PD (2004) Laminin functions in tissue morphogenesis. Annu Rev Cell Dev Biol 20: 255-284.
- Aumailley M, Bruckner-Tuderman L, Carter WG, Deutzmann R, Edgar D, et al. (2005) A simplified laminin nomenclature. Matrix Biol 24(5): 326-332.
- Domogatskaya A, Rodin S, Tryggvason K (2012) Functional Diversity of Laminins. Annu Rev Cell Dev Biol 28(1): 523-553.
- Zhang W, Ge Y, Cheng Q, Zhang Q, Fang L, et al. (2015) Decorin is a pivotal effector in the extracellular matrix and tumour microenvironment. Oncotarget 9(4): 5480-5491.
- Gubbiotti MA, Vallet SD, Ricard-Blum S, Iozzo RV (2016) Decorin interacting network: A comprehensive analysis of decorin-binding partners and their versatile functions. Matrix Biol 55: 7-21.
- Neill T, Schaefer L, Iozzo RV (2012) Decorin. Am J Pathol 181(2): 380-387.
- Schaefer L, Iozzo RV (2008) Biological Functions of the Small Leucine-rich Proteoglycans: From Genetics to Signa transduction. J Biol Chem 283(31): 21305-21309.
- Neill T, Schaefer L, Iozzo RV (2016) Decorin as a multivalent therapeutic agent against cancer. Adv Drug Deliv Rev 97: 174-185.
- Buraschi S, Pal N, Tyler-Rubinstein N, Owens RT, Neill T, et al. (2010) Decorin antagonizes Met receptor activity and down-regulates {beta-catenin and Myc levels. J Biol Chem 285(53): 42075-42085.
- Nastase MV, Young MF, Schaefer L (2012) Biglycan: a multivalent proteoglycan providing structure and signals. J histochem Cytochem 60(12): 963-975.
- Hu L, Zang MD, Wang HX, Li JF, Su LP, et al. (2016) Biglycan stimulates VEGF expression in endothelial cells by activating the TLR signaling pathway. Mol Oncol 10(9): 1473-1484.
- Wight TN (2017) Provisional matrix: A role for versican and hyaluronan. Matrix Biol 60: 38-56.
- Johnson P, Arif AA, Lee-Sayer SSM, Dong Y (2018) Hyaluronan and Its Interactions With Immune Cells in the Healthy and Inflamed Lung. Front Immunol 9: 2787.
- Wight TN, Frevert CW, Debley JS, Reeves SR, Parks WC, et al. (2017) Interplay of extracellular matrix and leukocytes in lung inflammation. Cell Immunol 312: 1-14.
- Nagyova E (2018) The Biological Role of Hyaluronan-Rich Oocyte-Cumulus Extracellular Matrix in Female Reproduction Int J Mol Sci 19(1): 283.
- Zhang X, Sun D, Song JW, Zullo J, Lipphardt M, et al. (2018) Endothelial cell dysfunction and glycocalyx – A vicious circle. Matrix Biol 71-72: 421-431.
- Mosesson MW (2005) Fibrinogen and fibrin structure and functions. J Thromb Haemost 3(8): 1894-1904.
- Chana-Muñoz A, Jendroszek A, Sønnichsen M, Wang T, Ploug M, et al. (2019) Origin and diversification of the plasminogen activation system among chordates. BMC Evol Biol 19(1): 27.
- Li WY, Chong SS, Huang EY, Tuan TL (2003) Plasminogen activator/plasmin system: a major player in wound healing? Wound Repair Regen 11(4): 239-247.
- Sun Z, Costell M, Fässler R (2019) Integrin activation by talin, kindlin and mechanical forces. Nat Cell Biol 21(1): 25-31.
- Moreno-Layseca P, Icha J, Hamidi H, Ivaska J (2019) Integrin trafficking in cells and tissues. Nat Cell Biol 21(2): 122-132.
- Humphries JD, Chastney MR, Askari JA (2019) Signal transduction via integrin adhesion complexes. Curr Opin Cell Biol 56: 14-21.
- Lee JL, Streuli CH (2014) Integrins and epithelial cell polarity. J Cell Sci 127(15): 3217-3225.
- Kanayama N, Terao T, Kawashima Y, Horiuchi K, Fujimoto D (1985) Collagen types in normal and prematurely ruptured amniotic membranes. Am J Obstet Gynecol 153(8): 899-903.
- Cui N, Hu M, Khalil RA (2017) Biochemical and biological attributes of matrix metalloproteinases. Prog Mol Biol Transl Sci 147: 1-73.
- Fujimoto T, Parry S, Urbanek M, Sammel M, Macones G, et al. (2002) A single nucleotide polymorphism in the matrix metalloproteinase-1 (MMP-1) promoter influences amnion cell MMP-1 expression and risk for preterm premature rupture of the fetal membranes. J Biol Chem 277(8): 6296-6302.
- Shoulders MD, Raines RT (2009) Collagen structure and stability. Annu Rev Biochem 78: 929-958.
- Gordon MK, Hahn RA (2010) Collagens. Cell Tissue Res 339(1): 247-257.
- Gkretsi V, Stylianopoulos T (2018) Stylianopoulos, Cell adhesion and matrix stiffness: coordinating cancer cell invasion and metastasis. Front Oncol 8: 145.
- Paszek MJ, Zahir N, Johnson KR, Lakins JN, Rozenberg GI, et al. (2005) Tensional homeostasis and the malignant phenotype. Cancer Cell 8(3): 241-254.
- Samuel MS, Lopez JI, McGhee EJ, Croft DR, Strachan D, et al. (2011) Actomyosin-Mediated Cellular Tension Drives Increased Tissue Stiffness and β-Catenin Activation to Induce Epidermal Hyperplasia and Tumor Growth. Cancer Cell 19(6): 776-791.
- Anderson MJ, Viars CS, Czekay S (1998) Cloning and characterization of three human forkhead genes that comprise an FKHR-like gene subfamily. Genomics 47(2): 187-189.
- Brunet A, Bonni A, Zigmond MJ, Lin MZ, Juo P, et al. (1999) Akt promotes cell survival by phosphorylating and inhibiting a forkhead transcription factor. Cell 96(6): 857-868.
- Kops GJ, de Ruiter ND (1999) Direct control of the forkhead transcription factor AFX by protein kinase B. Nature 398: 6728.
- Kallergi G, Agelaki S, Markomanolaki H, Georgoulias V (2007) Activation of FAK/PI3K/Rac1 signaling controls actin reorganization and inhibits cell motility in human cancer cells. Cell Physiol Biochem 20(6): 977-986.
- Storz P, Döppler H, Copland JA, Simpson KJ, Toker A (2009) FOXO3a promotes tumor cell Invasion through the Induction of matrix metalloproteinases. Mol Cell Biol 29(18): 4906-4917.
- Lee HY, You HJ, Won JY, Youn SW, Cho HJ, et al. (2008) Forkhead Factor, FOXO3a, Induces Apoptosis of Endothelia Cells Through Activation of Matrix Metalloproteinases. Arterioscler Thromb Vasc Biol 28(2): 302-308.
- Li H, Liang J, Castrillon DH (2007) FoxO4 Regulates Tumor Necrosis Factor Alpha-Directed Smooth Muscle Cell Migration by Activating Matrix Metalloproteinase 9 Gene Transcription. Mol Cell Biol 27(7): 2676-2686.
- Essers MA, Weijzen S, de Vries-Smits AM, Saarloos I, de Ruiter ND, et al. (2004) FOXO transcription factor activation by oxidative stress mediated by the small GTPase Ral and JNK. EMBO J 23(24): 4802-4812.
- Fortunato SJ, Menon R, Lombardi SJ (1999) MMP/TIMP imbalance in amniotic fluid during PROM: an indirect support for endogenous pathway to membrane rupture. J Perinat Med 27(5): 362-368.
- Menon R, Fortunato SJ (2007) Infection and the role of inflammation in preterm premature rupture of the membranes. Best Pract Res Clin Obstet Gynaecol 21(3): 467-478.
- Duchesne MJ, Thaler-Dao H, de Paulet AC (1978) Prostaglandin synthesis in human placenta and fetal membranes. Prostaglandins 15(1): 19-42.
- McLaren J, Taylor DJ, Bell SC (2000) Prostaglandin E2-dependent production of latent matrix metalloproteinase-9 in cultures of human fetal membranes. Mol Hum Reprod 6(11): 1033-1040.
- Vadillo-Ortega F, González-Avila G, Furth EE, Lei H, Muschel RJ, et al. (1995) 92-kd type IV collagenase (matrix metalloproteinase-9 activity in human amniochorion increases with labor. Am J Pathol 146(1): 148-156.
- Senior RM, Griffin GL, Fliszar CJ, Shapiro SD, Goldberg GI, et al. (1991) Human 92- and 72-kilodalton type IV collagenases are elastases. J Biol Chem 266(12): 7870-7875.
- Wilhelm SM, Collier IE, Marmer BL, Eisen AZ, Grant GA, et al. (1989) SV40-transformed human lung fibroblasts secrete a 92-kDa type IV collagenase which is identical to that secreted by normal human macrophages. J Biol Chem 264(29): 17213-17221.
- Cox SM, Casey ML, MacDonald PC (1997) Accumulation of interleukin-1β and interleukin-6 in amniotic fluid: a sequela of labour at term and preterm. Hum Reprod Update 3(5): 517-527.
- Hillier SL, Witkin SS, Krohn MA, Watts DH, Kiviat NB (1993) The relationship of amniotic fluid cytokines and preterm delivery, amniotic fluid infection, histologic chorioamnionitis, and chorioamnion infection. Obstet Gynecol 81(6): 941-948.
- Arechavaleta-Velasco F, Ogando D, Parry S, Vadillo-Ortega F (2002) Production of matrix metalloproteinase-9 in lipopolysaccharide-stimulated human amnion occurs through an autocrine and paracrine proinflammatory cytokine-dependent system. Biol Reprod 67(6): 1952-1958.
- Manthey CL, Brandes ME, Perera PY, Vogel SN (1992) Taxol increases steady-state levels of lipopolysaccharide-inducible genes and protein-tyrosine phosphorylation in murine macrophages. J Immunol 149(7): 2459-2465.
- Gonzalez JM, Xu H, Ofori E, Elovitz MA (2007) Toll-like receptors in the uterus, cervix, and placenta: is pregnancy an immunosuppressed state? Am J Obstet Gynecol 197(3): 296.e1-296.e6.
- Sheldon IM, Roberts MH (2010) Toll-Like Receptor 4 Mediates the Response of Epithelial and Stromal Cells to Lipopolysaccharide in the Endometrium. PLoS One 5(9): e12906.
- Moço NP, Martin LF, Pereira AC, Polettini J, Peraçoli JC (2013) Gene expression and protein localization of TLR-1, -2, -4 and -6 in amniochorion membranes of pregnancies complicated by histologic chorioamnionitis. Eur J Obstet Gynecol Reprod Biol 171(1): 12-17.
- Shim SS, Romero R, Hong JS, Park CW, Jun JK, et al. (2004) Clinical significance of intra-amniotic inflammation in patients with preterm premature rupture of membranes. Am J Obstet Gynecol 191(4): 1339-1345.
- Angus SR, Segel SY, Hsu CD, Locksmith GJ, Clark P, et al. (2001) Amniotic fluid matrix metalloproteinase-8 indicates intra-amniotic infection. Am J Obstet Gynecol 185(5): 1232-1238.
- Belfort MA (2018) Predicting premature preterm rupture of the membranes after fetal surgery. BJOG 125(10): 1293.
- Silaban B (2005) Analisis dan standarisasi buku kimia kelas XII semester 2 berdasarkan standar ISI KTSP. Biol Reprod 72(3): 720-726.
- Elkhwad M, Pandey V, Stetzer B, Mercer BM, Kumar D, et al. (2006) Fetal Membranes From Term VAginal Deliveries have a Zone of Weakness Exhibiting Characteristics of Apoptosis and Remodeling. J Soc Gynecol Investig 13(3): 191-195.
- Lappas M, Lim R, Riley C, Menon R (2010) Expression and localisation of FoxO3 and FoxO4 in human placenta and fetal membranes. Placenta 31(12): 1043-1050.
- Luo X, Shi Q, Gu Y, Pan J, Hua M, et al. (2013) LncRNA pathway involved in premature preterm rupture of membrane (PPROM): an epigenomic approach to study the pathogenesis of reproductive disorders. PLoS One 8(11): e79897.
- Zou L, Zhang H, Zhu J, Zhu J (2004) The value of the soluable intercellular adhesion molecule-1 levels in matermal serum for determination of occult chorioamnionitis in premature rupture of membranes. J Huazhong Univ Sci Technol Med Sci 24(2): 154-157.
- Weiyuan Z, Li W (1998) Study of interleukin-6 and tumor necrosis factor-alpha levels in maternal serum and amniotic fluid of patients with premature rupture of membranes. J Perinat Med 26(6): 491-494.
- Shobokshi A, Shaarawy M (2002) Maternal serum and amniotic fluid cytokines in patients with preterm premature rupture of membranes with and without intrauterine infection. Int J Gynaecol Obstet 79(3): 209-215.
- Athayde N, Romero R, Maymon E, Gomez R, Pacora P, et al. (2000) Interleukin 16 in pregnancy, parturition, rupture of fetal membranes, and microbial invasion of the amniotic cavity. Am J Obstet Gynecol 182 (1 Pt 1): 135-141.
- Saini S, Goel N, Sharma M, Arora B, Garg N (2003) C-reactive proteins as an indicator of sub-clinical infection in cases of premature rupture of membranes. Indian J Pathol Microbiol 46(3): 515-516.
- Rizzo G, Capponi A, Vlachopoulou A, Angelini E, Grassi C, et al. (1998) Interleukin-6 concentrations in cervical secretions in the prediction of intrauterine infection in preterm premature rupture of the membranes. Gynecol Obstet Invest 46(2): 91-95.
- El-Shazly S, Makhseed M, Azizieh F, Raghupathy R (2004) Increased expression of pro-inflammatory cytokines in placentas of women undergoing spontaneous preterm delivery or premature rupture of membranes. Am J Reprod Immunol 52(1): 45-52.
- Menon R, Lombardi SJ, Fortunato SJ (2001) IL-18, a product of choriodecidual cells, increases during premature rupture of membranes but fails to turn on the Fas-FasL-mediated apoptosis pathway. J Assist Reprod Genet 18(5): 276-284.
- Romero R, Mazor M, Sepulveda W, Avila C, Copeland D, et al. (1992) Tumor necrosis factor in preterm and term labor. Am J Obstet Gynecol 166(5): 1576-1587.
- Romero R, Manogue KR, Mitchell MD (1990) Infection and labor. IV. Cachectin-tumor necrosis factor in the amniotic fluid of women with intraamniotic infection and preterm labor. Am J Obstet Gynecol 161(2): 336-341.
- Shen C, Zhong N (2015) Long non-coding RNAs: the epigenetic regulators involved in the pathogenesis of reproductive disorder. Am J Reprod Immunol 73(2): 95-108.
- McAninch D, Roberts CT, Bianco-Miotto T (2017) Mechanistic Insight into Long Noncoding RNAs and the Placenta. Int J Mol Sci 18(7): 1371.
- Zou Y, Jiang Z, Yu X, Sun M, Zhang Y, et al. (2013) Upregulation of long noncoding RNA SPRY4-IT1 modulates proliferation, migration, apoptosis, and network formation in trophoblast cells HTR-8SV/neo. PLoS One 8(11): e79598.
- Sõber S, Reiman M, Kikas T, Rull K, Inno R, et al. (2015) Extensive shift in placental transcriptome profile in preeclampsia and placental origin of adverse pregnancy outcomes. Sci Rep 5: 13336.
- He X, Ou C, Xiao Y, Han Q, Li H, et al. (2017) LncRNAs: key players and novel insights into diabetes mellitus. Oncotarget 8(41): 71325-71341.
- Romero R, Gómez R, Chaiworapongsa T, Conoscenti G, Kim JC, et al. (2001) The role of infection in preterm labour and delivery. Paediatr Perinat Epidemiol 15(Suppl 2): 41-56.
- Romero R, Yoon BH, Mazor M, Gomez R, Diamond MP, et al. (1993) The diagnostic and prognostic value of amniotic fluid white blood cell count, glucose, interleukin-6, and gram stain in patients with preterm labor and intact membranes. Am J Obstet Gynecol 169(4): 805-816.
- Zhao X, Dong X, Luo X, Pan J, Ju W, et al. (2017) Ubiquitin-Proteasome-Collagen (CUP) Pathway in Preterm Premature Rupture of Fetal Membranes. Front Pharmacol 8: 310.