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Duarte G, Linhares IM, Kreitchmann R, Tristão ADR, Traina E, Canti I, Takimura M, Andrade JQ. Vulvovaginitis in pregnant women. REVISTA BRASILEIRA DE GINECOLOGIA E OBSTETRÍCIA 2024; 46:e-FPS03. [PMID: 38765512 PMCID: PMC11075393 DOI: 10.61622/rbgo/2024fps03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024] Open
Abstract
• The balanced vaginal microbiome is the main factor defending the vaginal environment against infections. Lactobacilli play a key role in this regard, maintaining the vaginal pH within the normal range (3.8 to 4.5). •Hormonal and immune adaptations resulting from pregnancy influence changes in the vaginal microbiome during pregnancy. •An altered vaginal microbiome predisposes to human immunodeficiency virus (HIV) infection. •Bacterial vaginosis is the main clinical expression of an imbalanced vaginal microbiome. •Vulvovaginal candidiasis depends more on the host's conditions than on the etiological agent. •Trichomonas vaginalis is a protozoan transmitted during sexual intercourse. •The use of probiotics is not approved for use in pregnant women.
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Affiliation(s)
- Geraldo Duarte
- Faculdade de Medicina de Ribeirão Preto Universidade de São Paulo Ribeirão PretoSP Brazil Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Iara Moreno Linhares
- Faculdade de Medicina Universidade de São Paulo São PauloSP Brazil Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Regis Kreitchmann
- Universidade Federal de Ciências da Saúde de Porto Alegre Porto AlegreRS Brazil Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brazil
| | - Andréa da Rocha Tristão
- Faculdade de Medicina de Botucatu Universidade Estadual Paulista BotucatuSP Brazil Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brazil
| | - Evelyn Traina
- Escola Paulista de Medicina Universidade Federal de São Paulo São PauloSP Brazil Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Ivete Canti
- Universidade Federal do Rio Grande do Sul Porto AlegreRS Brazil Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Marcos Takimura
- Universidade Positivo CuritibaPR Brazil Universidade Positivo, Curitiba, PR, Brazil
| | - Joelma Queiroz Andrade
- Faculdade de Medicina Universidade de São Paulo São PauloSP Brazil Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
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Bailey NP, Shao Y, Du S, Foster PG, Fettweis J, Hall N, Wang Z, Hirt RP. Evolutionary conservation of Trichomonas-mycoplasma symbiosis across the host species barrier. Front Microbiol 2023; 14:1242275. [PMID: 37808290 PMCID: PMC10557491 DOI: 10.3389/fmicb.2023.1242275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Accepted: 09/01/2023] [Indexed: 10/10/2023] Open
Abstract
Introduction The protozoan parasite Trichomonas vaginalis is the most common cellular sexually transmitted disease in humans, and the closely related species Trichomonas gallinae is an avian parasite of ecological and economic importance. Phylogenetic evidence suggests T. vaginalis arose during bird to human transmission of a T. gallinae-like ancestor. Trichomonas vaginalis shares a strong clinical association with the independent sexually transmitted pathogen Metamycoplasma (formerly Mycoplasma) hominis, and the uncultured bacterium "Candidatus Malacoplasma (formerly Mycoplasma) girerdii," with the latter association being an order of magnitude stronger. Both bacterial species have been shown to profoundly influence T. vaginalis growth, energy production and virulence-associated mechanisms. Methods Evidence for a novel Malacoplasma sp. was discovered by in vivo Illumina metatranscriptomics sequencing of the T. gallinae-infected pigeon mouth. We leveraged published 16S rDNA profiling data from digestive tract of 12 healthy and 24 T. gallinae-infected pigeons to investigate association between the novel Malacoplasma sp. and T. gallinae. We utilised Illumina metagenomics sequencing targeted to pigeon oral and crop samples infected with the novel Malacoplasma sp. to generate its full-length genome sequence. Sequence similarity network analysis was used to compare annotated proteins from the novel Malacoplasma sp. with a range of other related species. Results Here we present evidence for a novel Malacoplasma species, related to "Ca. M. girerdii," that is strongly associated with T. gallinae in the upper digestive tract of domestic pigeons. Analysis of the genome sequence revealed gene features apparently specific to a Trichomonas-symbiotic Malacoplasma lineage. Discussion These data support a model of long-term association between Trichomonas and Malacoplasma spp. that has been conserved across diversification of the Trichomonas lineage and the host species barrier from birds to human.
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Affiliation(s)
- Nicholas P. Bailey
- Biosciences Institute, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - Yuxin Shao
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Shaodua Du
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | | | | | - Neil Hall
- Earlham Institute, Norwich, United Kingdom
- School of Biological Sciences, University of East Anglia, Norwich, Norfolk, United Kingdom
| | - Zheng Wang
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Robert P. Hirt
- Biosciences Institute, Newcastle University, Newcastle-upon-Tyne, United Kingdom
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Bongiorni Galego G, Tasca T. Infinity war: Trichomonas vaginalis and interactions with host immune response. MICROBIAL CELL (GRAZ, AUSTRIA) 2023; 10:103-116. [PMID: 37125086 PMCID: PMC10140678 DOI: 10.15698/mic2023.05.796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 03/07/2023] [Accepted: 03/21/2023] [Indexed: 05/02/2023]
Abstract
Trichomonas vaginalis is the pathological agent of human trichomoniasis. The incidence is 156 million cases worldwide. Due to the increasing resistance of isolates to approved drugs and clinical complications that include increased risk in the acquisition and transmission of HIV, cervical and prostate cancer, and adverse outcomes during pregnancy, increasing our understanding of the pathogen's interaction with the host immune response is essential. Production of cytokines and cells of innate immunity: Neutrophils and macrophages are the main cells involved in the fight against the parasite, while IL-8, IL-6 and TNF-α are the most produced cytokines in response to this infection. Clinical complications: T. vaginalis increases the acquisition of HIV, stimulates the invasiveness and growth of prostate cells, and generates an inflammatory environment that may lead to preterm birth. Endosymbiosis: Mycoplasma hominis increased cytotoxicity, growth, and survival rate of the parasite. Purinergic signaling: NTPD-ases and ecto-5'-nucleotidase helps in parasite survival by modulating the nucleotides levels in the microenvironment. Antibodies: IgG was detected in serum samples of rodents infected with isolates from symptomatic patients as well as patients with symptoms. However, antibody production does not protect against a reinfection. Vaccine candidate targets: The transient receptor potential- like channel of T. vaginalis (TvTRPV), cysteine peptidase, and α-actinin are currently cited as candidate targets for vaccine development. In this context, the understanding of mechanisms involved in the host-T. vaginalis interaction that elicit the immune response may contribute to the development of new targets to combat trichomoniasis.
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Affiliation(s)
- Giulia Bongiorni Galego
- Grupo de Pesquisa em Tricomonas, Faculdade de Farmácia e Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Avenida Ipiranga, 2752, Porto Alegre, 90610-000, Rio Grande do Sul, Brazil
| | - Tiana Tasca
- Grupo de Pesquisa em Tricomonas, Faculdade de Farmácia e Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Avenida Ipiranga, 2752, Porto Alegre, 90610-000, Rio Grande do Sul, Brazil
- * Corresponding Author: Tiana Tasca, Avenida Ipiranga, 2752. 90610-000. Porto Alegre, Rio Grande do Sul, Brazil; Tel: +555133085325;
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Lesiak-Markowicz I, Walochnik J, Stary A, Fürnkranz U. Characterisation of Trichomonas vaginalis Isolates Collected from Patients in Vienna between 2019 and 2021. Int J Mol Sci 2022; 23:12422. [PMID: 36293276 PMCID: PMC9604477 DOI: 10.3390/ijms232012422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/13/2022] [Accepted: 10/16/2022] [Indexed: 11/23/2022] Open
Abstract
Trichomonas vaginalis (TV) is the causative agent of trichomoniasis, the most common nonviral sexually transmitted disease. TV can carry symbionts such as Trichomonas vaginalis virus (TVV) or Mycoplasma hominis. Four distinct strains of TV are known: TVV1, TVV2, TVV3, and TVV4. The aim of the current study was to characterise TV isolates from Austrian patients for the presence of symbionts, and to determine their effect on metronidazole susceptibility and cytotoxicity against HeLa cells. We collected 82 TV isolates and detected presence of TVV (TVV1, TVV2, or TVV3) in 29 of them (35%); no TVV4 was detected. M. hominis was detected in vaginal/urethral swabs by culture in 37% of the TV-positive patients; M. hominis DNA was found in 28% of the TV isolates by PCR. In 15% of the patients, M. hominis was detected in the clinical samples as well as within the respective TV isolates. In 22% of the patients, M. hominis was detected by culture only. In 11 patients, M. hominis was detected only within the respective cultured TV isolates (13%), while the swab samples were negative for M. hominis. Our results provide a first insight into the distribution of symbionts in TV isolates from Austrian patients. We did not observe significant effects of the symbionts on metronidazole susceptibility, cytotoxicity, or severity of symptoms.
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Affiliation(s)
- Iwona Lesiak-Markowicz
- Intitute for Specific Prophylaxis and Tropical Medicine (ISPTM), Centre for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, 1090 Vienna, Austria
| | - Julia Walochnik
- Intitute for Specific Prophylaxis and Tropical Medicine (ISPTM), Centre for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, 1090 Vienna, Austria
| | - Angelika Stary
- Pilzambulatorium Schloesselgasse, Oupatients Centre for Diagnosis of Venero-Dermatological Diseases, 1080 Vienna, Austria
| | - Ursula Fürnkranz
- Pilzambulatorium Schloesselgasse, Oupatients Centre for Diagnosis of Venero-Dermatological Diseases, 1080 Vienna, Austria
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Abstract
Trichomonas vaginalis can host the endosymbiont Mycoplasma hominis, an opportunistic pathogenic bacterium capable of modulating T. vaginalis pathobiology. Recently, a new noncultivable mycoplasma, "Candidatus Mycoplasma girerdii," has been shown to be closely associated with women affected by trichomoniasis, suggesting a biological association. Although several features of "Ca. M. girerdii" have been investigated through genomic analysis, the nature of the potential T. vaginalis-"Ca. M. girerdii" consortium and its impact on the biology and pathogenesis of both microorganisms have not yet been explored. Here, we investigate the association between "Ca. M. girerdii" and T. vaginalis isolated from patients affected by trichomoniasis, demonstrating their intracellular localization. By using an in vitro model system based on single- and double-Mycoplasma infection of Mycoplasma-free isogenic T. vaginalis, we investigated the ability of the protist to establish a relationship with the bacteria and impact T. vaginalis growth. Our data indicate likely competition between M. hominis and "Ca. M. girerdii" while infecting trichomonad cells. Comparative dual-transcriptomics data showed major shifts in parasite gene expression in response to the presence of Mycoplasma, including genes associated with energy metabolism and pathogenesis. Consistent with the transcriptomics data, both parasite-mediated hemolysis and binding to host epithelial cells were significantly upregulated in the presence of either Mycoplasma species. Taken together, these results support a model in which this microbial association could modulate the virulence of T. vaginalis. IMPORTANCE T. vaginalis and M. hominis form a unique case of endosymbiosis that modulates the parasite's pathobiology. Recently, a new nonculturable mycoplasma species ("Candidatus Mycoplasma girerdii") has been described as closely associated with the protozoon. Here, we report the characterization of this endosymbiotic relationship. Clinical isolates of the parasite demonstrate that mycoplasmas are common among trichomoniasis patients. The relationships are studied by devising an in vitro system of single and/or double infections in isogenic protozoan recipients. Comparative growth experiments and transcriptomics data demonstrate that the composition of different microbial consortia influences the growth of the parasite and significantly modulates its transcriptomic profile, including metabolic enzymes and virulence genes such as adhesins and pore-forming proteins. The data on modulation from RNA sequencing (RNA-Seq) correlated closely with those of the cytopathic effect and adhesion to human target cells. We propose the hypothesis that the presence and the quantitative ratios of endosymbionts may contribute to modulating protozoan virulence. Our data highlight the importance of considering pathogenic entities as microbial ecosystems, reinforcing the importance of the development of integrated diagnostic and therapeutic strategies.
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Margarita V, Cao LC, Bailey NP, Ngoc THT, Ngo TMC, Nu PAT, Diaz N, Dessì D, Hirt RP, Fiori PL, Rappelli P. Effect of the Symbiosis with Mycoplasma hominis and Candidatus Mycoplasma Girerdii on Trichomonas vaginalis Metronidazole Susceptibility. Antibiotics (Basel) 2022; 11:antibiotics11060812. [PMID: 35740218 PMCID: PMC9220282 DOI: 10.3390/antibiotics11060812] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/14/2022] [Accepted: 06/15/2022] [Indexed: 11/16/2022] Open
Abstract
Trichomoniasis, the most common non-viral sexually transmitted infection worldwide, is caused by the protozoon Trichomonas vaginalis. The 5- nitroimidazole drugs, of which metronidazole is the most prescribed, are the only effective drugs to treat trichomoniasis. Resistance against metronidazole is increasingly reported among T. vaginalis isolates. T. vaginalis can establish an endosymbiosis with two Mycoplasma species, Mycoplasma hominis and Candidatus Mycoplasma girerdii, whose presence has been demonstrated to influence several aspects of the protozoan pathobiology. The role of M. hominis in T. vaginalis resistance to metronidazole is controversial, while the influence of Ca. M. girerdii has never been investigated. In this work, we investigate the possible correlation between the presence of Ca. M. girerdii and/or M. hominis and the in vitro drug susceptibility in a large group of T. vaginalis isolated in Italy and in Vietnam. We also evaluated, via RNA-seq analysis, the expression of protozoan genes involved in metronidazole resistance in a set of syngenic T. vaginalis strains, differing only for the presence/absence of the two Mycoplasmas. Our results show that the presence of M. hominis significantly increases the sensitivity to metronidazole in T. vaginalis and affects gene expression. On the contrary, the symbiosis with Candidatus Mycoplasma girerdii seems to have no effect on metronidazole resistance in T. vaginalis.
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Affiliation(s)
- Valentina Margarita
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy; (V.M.); (N.D.); (D.D.); (P.L.F.)
| | - Le Chi Cao
- Department of Parasitology, Hue University of Medicine and Pharmacy, 06 Ngo Quyen Street, Hue 49000, Vietnam; (L.C.C.); (T.H.T.N.); (T.M.C.N.); (P.A.T.N.)
| | - Nicholas P. Bailey
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, UK; (N.P.B.); (R.P.H.)
| | - Thuy Ha Thi Ngoc
- Department of Parasitology, Hue University of Medicine and Pharmacy, 06 Ngo Quyen Street, Hue 49000, Vietnam; (L.C.C.); (T.H.T.N.); (T.M.C.N.); (P.A.T.N.)
| | - Thi Minh Chau Ngo
- Department of Parasitology, Hue University of Medicine and Pharmacy, 06 Ngo Quyen Street, Hue 49000, Vietnam; (L.C.C.); (T.H.T.N.); (T.M.C.N.); (P.A.T.N.)
| | - Phuong Anh Ton Nu
- Department of Parasitology, Hue University of Medicine and Pharmacy, 06 Ngo Quyen Street, Hue 49000, Vietnam; (L.C.C.); (T.H.T.N.); (T.M.C.N.); (P.A.T.N.)
| | - Nicia Diaz
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy; (V.M.); (N.D.); (D.D.); (P.L.F.)
| | - Daniele Dessì
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy; (V.M.); (N.D.); (D.D.); (P.L.F.)
- Mediterranean Centre for Disease Control (MCDC), 07110 Sassari, Italy
| | - Robert P. Hirt
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, UK; (N.P.B.); (R.P.H.)
| | - Pier Luigi Fiori
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy; (V.M.); (N.D.); (D.D.); (P.L.F.)
- Mediterranean Centre for Disease Control (MCDC), 07110 Sassari, Italy
| | - Paola Rappelli
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy; (V.M.); (N.D.); (D.D.); (P.L.F.)
- Mediterranean Centre for Disease Control (MCDC), 07110 Sassari, Italy
- Correspondence:
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Perin J, Coleman JS, Ronda J, Neibaur E, Gaydos CA, Trent M. Maternal and Fetal Outcomes in an Observational Cohort of Women With Mycoplasma genitalium Infections. Sex Transm Dis 2021; 48:991-996. [PMID: 34654767 PMCID: PMC8595487 DOI: 10.1097/olq.0000000000001569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Despite evidence that Mycoplasma genitalium (MG) is a risk factor for adverse outcomes in pregnancy, screening in pregnant women is not currently recommended. METHODS Pregnant women between the ages of 13 and 29 years were recruited during their routine prenatal visits, screened for sexually transmitted infections (STIs) and followed for 1 year. We compared women with MG to those with no STIs, excluding women with STIs other than MG (Chlamydia trachomatis [CT], Neisseria gonorrhoeae [NG], or Trichomonas vaginalis [TV]) unless they were also codiagnosed with MG. Adverse outcomes were extracted from participants' medical records and compared between women with MG and those without STIs using exact or nonparametric approaches. Estimated differences were also adjusted for demographics using propensity scores with linear and logistic regression, where appropriate. We exclude women with MG and CT, NG, or TV diagnosis for primary analysis. RESULTS Of 281 participants enrolled from September 2015 until July 2019, 51 (18.1%) were diagnosed with MG. Of 51 women with MG, 12 (24%) were also diagnosed with CT, NG, or TV. All women with MG were offered treatment with azithromycin; however, only 28 (55%) were documented to receive treatment. Women with MG had similar outcomes to those with no STIs with a few exceptions. Average birth weight was lower among women with MG alone compared with women with no STIs when excluding coinfections (169-g difference, 15-323). CONCLUSIONS Our results indicate that MG is common in pregnant women and often presents as a coinfection. More research using population-based designs is needed to determine whether screening or treatment for women at risk for low birth weight or coinfections is warranted.
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Affiliation(s)
| | - Jenell S Coleman
- Department of Obstetrics and Gynecology, Johns Hopkins School of Medicine, Baltimore, MD
| | | | - Erica Neibaur
- From the Department of Pediatrics, Johns Hopkins School of Medicine
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Yasynetskyi M, Banyra O, Nikitin O, Ventskivska I, Kozlov V, Kvach M, Borzhievskyy A. Mixed Sexually Transmitted Infections in Infertile Couples: Empirical Treatment and Influence on Semen Quality. RECENT ADVANCES IN ANTI-INFECTIVE DRUG DISCOVERY 2021; 16:227-236. [PMID: 34844551 DOI: 10.2174/2772434416666211129105145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 08/29/2021] [Accepted: 10/20/2021] [Indexed: 02/08/2023]
Abstract
BACKGROUND Trichomonas vaginalis (TV), Mycoplasma genitalium (MG) and Ureaplasma urealyticum (UU) are common sexually transmitted infections (STIs) that are diagnosed in infertile couples (cps). In cases with their simultaneous presence in a patient (mixed STI, MSTIs), treatment is complicated by the different sensitivity of microorganisms to antibacterial drugs. Moreover, in cases of complicated infections, the empirical treatment should be started before obtaining the results of drug susceptibilities. OBJECTIVE The objective of the current study is to find the effective and well-tolerated combination of drugs for the empirical antibacterial treatment of mixed STIs presented by TV, MG and UU in infertile couples. We also aimed to establish the influence of mixed STIs on semen quality. METHODS Our prospective study included 154 infertile couples (308 patients) with confirmed symptomatic MSTIs in one of the couples caused by the simultaneous presence of TV, MG and UU. All couples were randomized on three groups for empirical treatment: Group 1 (n=49 cps, 98 pts) who were treated by initial prescribing of anti-trichomoniasis drug Secnidazole, 2.0 g po followed by Azythromycin 500 mg on day 1 continuing by 250 mg on days 2-7; Group 2 (n=52 cps, 104 pts: Secnidazole, 2.0 g po followed by Josamycin 1000 mg bid for 12 days); Group 3 (n=53 cps, 106 pts: Secnidazole, 2.0 g po followed by Moxifloxacin 400 mg once daily for 12 days). The endpoints were clinical and microbiological cure rates as well as the frequency of side-effects in analyzed groups. We determined the basic parameters of the spermogram and Deoxyribonucleic acid (DNA) fragmentation levels in 59 patients with MSTIs before and at the 3rd, 6th and 9th month after pathogens eradication comparing them with results in 63 healthy sperm donors. RESULTS After the treatment, clinical cure rates in analyzed groups were 82.6% (Group 1) vs. 96.1% (Group 2) vs. 92.3% (Group 3). Microbiological cure rates (UU+MG) were 73.9% vs. 97.1% vs. 84.5% correspondingly (p<0.05). TV microbiological cure rates were 97.8% vs. 98.0% vs. 96.1% (p>0.05). Side-effects were registered in 28.6% vs. 12.5% vs. 18.9% cases correspondingly (p<0.05). In MSTIs patients, we registered the increasing DNA fragmentation rates, leucocytes count and decreasing semen volume, motility, vitality, sperm concentration, total spermatozoa number and number of spermatozoa with normal morphology. At the 6th month after complete pathogens eradication, these parameters approached normal values. CONCLUSION At the present time, the combination of Secnidazole+Josamycin can be considered the most effective and well-tolerated for the empirical treatment in patients with MSTIs presented by TV, MG and UU. Complete eradication of these MSTIs in males improves their semen parameters.
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Affiliation(s)
- Mykola Yasynetskyi
- Department of Urology, Bogomolets National Medical University, Kyiv,Ukraine
| | - Oleg Banyra
- Department of Urology, St. Paraskeva Medical Centre, Lviv,Ukraine
| | - Oleg Nikitin
- Department of Urology, Bogomolets National Medical University, Kyiv,Ukraine
| | - Iryna Ventskivska
- Department of Obstetrics and Gynecology No. 1, Bogomolets National Medical University, Kyiv,Ukraine
| | - Vadym Kozlov
- Department of Urology, Bogomolets National Medical University, Kyiv,Ukraine
| | - Mykola Kvach
- Department of Urology, Bogomolets National Medical University, Kyiv,Ukraine
| | - Andrii Borzhievskyy
- Department of Urology, Danylo Halytsky National Medical University, Lviv, Ukraine
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Abstract
Trichomonas vaginalis is an anaerobic/microaerophilic protist parasite which causes trichomoniasis, one of the most prevalent sexually transmitted diseases worldwide. T. vaginalis not only is important as a human pathogen but also is of great biological interest because of its peculiar cell biology and metabolism, in earlier times fostering the erroneous notion that this microorganism is at the root of eukaryotic evolution. This review summarizes the major advances in the last five years in the T. vaginalis field with regard to genetics, molecular biology, ecology, and pathogenicity of the parasite.
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Affiliation(s)
- David Leitsch
- Department of Specific Prophylaxis and Tropical Medicine, Medical University of Vienna, Vienna, Austria
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10
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Henriquez FL, Mooney R, Bandel T, Giammarini E, Zeroual M, Fiori PL, Margarita V, Rappelli P, Dessì D. Paradigms of Protist/Bacteria Symbioses Affecting Human Health: Acanthamoeba species and Trichomonas vaginalis. Front Microbiol 2021; 11:616213. [PMID: 33488560 PMCID: PMC7817646 DOI: 10.3389/fmicb.2020.616213] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 12/07/2020] [Indexed: 12/15/2022] Open
Abstract
Ever since the publication of the seminal paper by Lynn Margulis in 1967 proposing the theory of the endosymbiotic origin of organelles, the study of the symbiotic relationships between unicellular eukaryotes and prokaryotes has received ever-growing attention by microbiologists and evolutionists alike. While the evolutionary significance of the endosymbiotic associations within protists has emerged and is intensively studied, the impact of these relationships on human health has been seldom taken into account. Microbial endosymbioses involving human eukaryotic pathogens are not common, and the sexually transmitted obligate parasite Trichomonas vaginalis and the free-living opportunistic pathogen Acanthamoeba represent two unique cases in this regard, to date. The reasons of this peculiarity for T. vaginalis and Acanthamoeba may be due to their lifestyles, characterized by bacteria-rich environments. However, this characteristic does not fully explain the reason why no bacterial endosymbiont has yet been detected in unicellular eukaryotic human pathogens other than in T. vaginalis and Acanthamoeba, albeit sparse and poorly investigated examples of morphological identification of bacteria-like microorganisms associated with Giardia and Entamoeba were reported in the past. In this review article we will present the body of experimental evidences revealing the profound effects of these examples of protist/bacteria symbiosis on the pathogenesis of the microbial species involved, and ultimately their impact on human health.
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Affiliation(s)
- Fiona L Henriquez
- School of Health and Life Sciences, University of West Scotland, Paisley, United Kingdom
| | - Ronnie Mooney
- School of Health and Life Sciences, University of West Scotland, Paisley, United Kingdom
| | - Timothy Bandel
- School of Health and Life Sciences, University of West Scotland, Paisley, United Kingdom
| | - Elisa Giammarini
- School of Health and Life Sciences, University of West Scotland, Paisley, United Kingdom
| | - Mohammed Zeroual
- School of Health and Life Sciences, University of West Scotland, Paisley, United Kingdom.,Dipartimento di Scienze Biomediche, Università degli Studi di Sassari, Sassari, Italy
| | - Pier Luigi Fiori
- Dipartimento di Scienze Biomediche, Università degli Studi di Sassari, Sassari, Italy.,Mediterrenean Center for Disease Control, Sassari, Italy
| | - Valentina Margarita
- Dipartimento di Scienze Biomediche, Università degli Studi di Sassari, Sassari, Italy
| | - Paola Rappelli
- Dipartimento di Scienze Biomediche, Università degli Studi di Sassari, Sassari, Italy.,Mediterrenean Center for Disease Control, Sassari, Italy
| | - Daniele Dessì
- Dipartimento di Scienze Biomediche, Università degli Studi di Sassari, Sassari, Italy.,Mediterrenean Center for Disease Control, Sassari, Italy
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11
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Bhakta SB, Moran JA, Mercer F. Neutrophil interactions with the sexually transmitted parasite Trichomonas vaginalis: implications for immunity and pathogenesis. Open Biol 2020; 10:200192. [PMID: 32873151 PMCID: PMC7536067 DOI: 10.1098/rsob.200192] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 08/11/2020] [Indexed: 12/11/2022] Open
Abstract
Trichomoniasis is the third most common sexually transmitted infection in humans and is caused by the protozoan parasite, Trichomonas vaginalis (Tv). Pathogenic outcomes are more common in women and generally include mild vaginitis or cervicitis. However, more serious effects associated with trichomoniasis include adverse reproductive outcomes. Like other infectious agents, pathogenesis from Tv infection is predicted to be the result of both parasite and host factors. At the site of infection, neutrophils are the most abundant immune cells present and probably play key roles in both parasite clearance and inflammatory pathology. Here, we discuss the evidence that neutrophils home to the site of Tv infection, kill the parasite, and that in some circumstances, parasites possibly evade neutrophil-directed killing. In vitro, the parasite is killed by neutrophils using a novel antimicrobial mechanism called trogocytosis, which probably involves both innate and adaptive immunity. While mechanisms of evasion are mostly conjecture at present, the persistence of Tv infections in patients argues strongly for their existence. Additionally, many strains of Tv harbour microbial symbionts Mycoplasma hominis or Trichomonasvirus, which are both predicted to impact neutrophil responses against the parasite. Novel research tools, especially animal models, will help to reveal the true outcomes of many factors involved in neutrophil-Tv interactions during trichomoniasis.
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Affiliation(s)
| | | | - Frances Mercer
- Department of Biological Sciences, California State Polytechnic University, Pomona, CA, USA
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12
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Donadu MG, Trong Le N, Viet Ho D, Quoc Doan T, Tuan Le A, Raal A, Usai M, Marchetti M, Sanna G, Madeddu S, Rappelli P, Diaz N, Molicotti P, Carta A, Piras S, Usai D, Thi Nguyen H, Cappuccinelli P, Zanetti S. Phytochemical Compositions and Biological Activities of Essential Oils from the Leaves, Rhizomes and Whole Plant of Hornstedtia bella Škorničk. Antibiotics (Basel) 2020; 9:antibiotics9060334. [PMID: 32570731 PMCID: PMC7344524 DOI: 10.3390/antibiotics9060334] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 06/12/2020] [Accepted: 06/16/2020] [Indexed: 12/26/2022] Open
Abstract
The rapid emergence of drug-resistant strains and novel viruses have motivated the search for new anti-infectious agents. In this study, the chemical compositions and cytotoxicity, as well as the antibacterial, antifungal, antitrichomonas, and antiviral activities of essential oils from the leaves, rhizomes, and whole plant of Hornstedtia bella were investigated. The GC/MS analysis showed that β-pinene, E-β-caryophyllene, and α-humulene were found at high concentrations in the essential oils. The essential oils exhibited (i) inhibition against Staphylococcus aureus, methicillin-resistant Staphylococcus aureus, Staphylococcus epidermidis with minimum inhibitory concentrations (MIC) and minimum lethal concentration (MLC) values from 1 to 4% (v/v); (ii) MIC and MLC values from 2 to 16% (v/v) in Candida tropicalis and Candida parapsilosis; (iii) MIC and MLC values from 4 to 16% in Enterococcus faecalis; and (iv) MIC and MLC values from 8 to greater than or equal to 16% (v/v) in the remaining strains, including Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Candida albicans, and Candida glabrata. In antitrichomonas activity, the leaves and whole-plant oils of Hornstedtia bella possessed IC50, IC90, and MLC values of 0.008%, 0.016%, and 0.03% (v/v), respectively, whilst those of rhizomes oil had in turn, 0.004%, 0.008%, and 0.016% (v/v).Besides, the leaf oil showed a weak cytotoxicity against Vero 76 and MRC-5; meanwhile, rhizomes and whole-plant oils did not exert any toxic effects on cell monolayers. Finally, these oils were not active against EV-A71.
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Affiliation(s)
- Matthew Gavino Donadu
- Department of Biomedical Sciences, University of Sassari, 07100 Sassari, Italy; (M.G.D.); (P.R.); (N.D.); (P.M.); (P.C.); (S.Z.)
- Department of Chemistry and Pharmacy, University of Sassari, 07100 Sassari, Italy; (M.U.); (A.C.); (S.P.)
| | - Nhan Trong Le
- Faculty of Pharmacy, Hue University of Medicine and Pharmacy, Hue University, Hue 49000, Vietnam; (N.T.L.); (D.V.H.); (T.Q.D.)
| | - Duc Viet Ho
- Faculty of Pharmacy, Hue University of Medicine and Pharmacy, Hue University, Hue 49000, Vietnam; (N.T.L.); (D.V.H.); (T.Q.D.)
| | - Tuan Quoc Doan
- Faculty of Pharmacy, Hue University of Medicine and Pharmacy, Hue University, Hue 49000, Vietnam; (N.T.L.); (D.V.H.); (T.Q.D.)
| | - Anh Tuan Le
- Mientrung Institute for Scientific Research, VAST, Hue 49000, Vietnam;
| | - Ain Raal
- Institute of Pharmacy, Faculty of Medicine, University of Tartu, 50900 Tartu, Estonia;
| | - Marianna Usai
- Department of Chemistry and Pharmacy, University of Sassari, 07100 Sassari, Italy; (M.U.); (A.C.); (S.P.)
| | - Mauro Marchetti
- Institute of Biomolecular Chemistry (CNR), Li Punti, 07100 Sassari, Italy;
| | - Giuseppina Sanna
- Department of Biomedical Sciences, University of Cagliari, 09042 Monserrato, Italy; (G.S.); (S.M.)
| | - Silvia Madeddu
- Department of Biomedical Sciences, University of Cagliari, 09042 Monserrato, Italy; (G.S.); (S.M.)
| | - Paola Rappelli
- Department of Biomedical Sciences, University of Sassari, 07100 Sassari, Italy; (M.G.D.); (P.R.); (N.D.); (P.M.); (P.C.); (S.Z.)
| | - Nicia Diaz
- Department of Biomedical Sciences, University of Sassari, 07100 Sassari, Italy; (M.G.D.); (P.R.); (N.D.); (P.M.); (P.C.); (S.Z.)
| | - Paola Molicotti
- Department of Biomedical Sciences, University of Sassari, 07100 Sassari, Italy; (M.G.D.); (P.R.); (N.D.); (P.M.); (P.C.); (S.Z.)
| | - Antonio Carta
- Department of Chemistry and Pharmacy, University of Sassari, 07100 Sassari, Italy; (M.U.); (A.C.); (S.P.)
| | - Sandra Piras
- Department of Chemistry and Pharmacy, University of Sassari, 07100 Sassari, Italy; (M.U.); (A.C.); (S.P.)
| | - Donatella Usai
- Department of Biomedical Sciences, University of Sassari, 07100 Sassari, Italy; (M.G.D.); (P.R.); (N.D.); (P.M.); (P.C.); (S.Z.)
- Correspondence: (D.U.); (H.T.N.)
| | - Hoai Thi Nguyen
- Faculty of Pharmacy, Hue University of Medicine and Pharmacy, Hue University, Hue 49000, Vietnam; (N.T.L.); (D.V.H.); (T.Q.D.)
- Correspondence: (D.U.); (H.T.N.)
| | - Piero Cappuccinelli
- Department of Biomedical Sciences, University of Sassari, 07100 Sassari, Italy; (M.G.D.); (P.R.); (N.D.); (P.M.); (P.C.); (S.Z.)
| | - Stefania Zanetti
- Department of Biomedical Sciences, University of Sassari, 07100 Sassari, Italy; (M.G.D.); (P.R.); (N.D.); (P.M.); (P.C.); (S.Z.)
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13
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Bolumburu C, Zamora V, Muñoz-Algarra M, Portero-Azorín F, Escario JA, Ibáñez-Escribano A. Trichomoniasis in a tertiary hospital of Madrid, Spain (2013-2017): prevalence and pregnancy rate, coinfections, metronidazole resistance, and endosymbiosis. Parasitol Res 2020; 119:1915-1923. [PMID: 32405804 DOI: 10.1007/s00436-020-06688-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Accepted: 04/07/2020] [Indexed: 01/31/2023]
Abstract
Trichomoniasis is the most prevalent curable sexually transmitted infection (STI) worldwide and a risk factor for the acquisition of other STIs and adverse pregnancy outcomes. The objectives of this study were to determine the prevalence of T. vaginalis and related coinfections in women attending a third-level hospital of Madrid (Spain). A retrospective study of 24,173 vaginal exudates from women with suspected vaginitis was conducted between 2013 and 2017. Likewise, among T. vaginalis positive samples, co-occurrence with gonorrhea, chlamydia, syphilis, VIH, Mycoplasma hominis, and Ureaplasma urealyticum was checked. Moreover, seven T. vaginalis isolates from 2017 were randomly collected for endobionts, drug resistance, and microsatellite (MS) instability determinations. The prevalence of T. vaginalis was 0.8% between 2013 and 2017. Less than 20% of patients with trichomoniasis were submitted to a complete screening for other genital pathogens. From that, two patients were coinfected with chlamydia and three with syphilis. Surprisingly, 6.4% of positive samples were diagnosed among pregnant women, showing an alarming increase from 3.2% (2014) to 10% (2017). Among the isolates randomly analyzed, five carried T. vaginalis virus, five harbored mycoplasmas, and one was metronidazole-resistant. The molecular genotyping showed a high variability in the three MS evaluated. To our knowledge, this is the first study in Spain that evaluates the prevalence of trichomoniasis in general and pregnant population and includes biomolecular determinations. These results warn about the increasing prevalence and highlight the importance of including T. vaginalis detection in routine gynecological revisions with special emphasis on childbearing age women and patients with previous STIs.
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Affiliation(s)
- Celia Bolumburu
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid, Spain
| | - Vega Zamora
- Servicio de Microbiología y Parasitología Clínica, Hospital Universitario Puerta de Hierro-Majadahonda, Madrid, Spain
| | - María Muñoz-Algarra
- Servicio de Microbiología y Parasitología Clínica, Hospital Universitario Puerta de Hierro-Majadahonda, Madrid, Spain
| | - Francisca Portero-Azorín
- Servicio de Microbiología y Parasitología Clínica, Hospital Universitario Puerta de Hierro-Majadahonda, Madrid, Spain
| | - José Antonio Escario
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid, Spain
| | - Alexandra Ibáñez-Escribano
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid, Spain.
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14
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Abstract
Microbial parasites adapted to thrive at mammalian mucosal surfaces have evolved multiple times from phylogenetically distant lineages into various extracellular and intracellular life styles. Their symbiotic relationships can range from commensalism to parasitism and more recently some host-parasites interactions are thought to have evolved into mutualistic associations too. It is increasingly appreciated that this diversity of symbiotic outcomes is the product of a complex network of parasites-microbiota-host interactions. Refinement and broader use of DNA based detection techniques are providing increasing evidence of how common some mucosal microbial parasites are and their host range, with some species being able to swap hosts, including from farm and pet animals to humans. A selection of examples will illustrate the zoonotic potential for a number of microbial parasites and how some species can be either disruptive or beneficial nodes in the complex networks of host-microbe interactions disrupting or maintaining mucosal homoeostasis. It will be argued that mucosal microbial parasitic diversity will represent an important resource to help us dissect through comparative studies the role of host-microbe interactions in both human health and disease.
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15
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Margarita V, Fiori PL, Rappelli P. Impact of Symbiosis Between Trichomonas vaginalis and Mycoplasma hominis on Vaginal Dysbiosis: A Mini Review. Front Cell Infect Microbiol 2020; 10:179. [PMID: 32457847 PMCID: PMC7226223 DOI: 10.3389/fcimb.2020.00179] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 04/03/2020] [Indexed: 11/25/2022] Open
Abstract
The protozoon Trichomonas vaginalis is responsible for trichomoniasis, a common sexually transmitted infection associated with an increased risk of HIV infection and adverse pregnancy outcomes. The protozoon has the surprising ability to establish a symbiotic relationship with other microorganisms. In fact, most T.vaginalis isolates intracellularly host the vaginal bacterium Mycoplasma hominis and can harbor up to four dsRNA viruses. Moreover, a novel Mycoplasma species named Ca. Mycoplasma girerdii has been recently described as associated with trichomonad cells. Trichomonas vaginalis colonizes the human vagina and its presence causes profound alterations of the resident microbiota, leading to dysbiosis. In healthy women, vaginal microbiota is characterized by the presence of a complex population of aerobic and anaerobic microorganisms living in a physiologically dynamic system dominated by bacteria of the genera Lactobacillus. The most common microbial vaginal imbalance is bacterial vaginosis, a polymicrobial disease associated with several adverse reproductive outcomes and increased risk of HIV infection. Here, we review the current knowledge regarding the interactions between both T.vaginalis and M.hominis and the vaginal microbiota, and we discuss the possibility of a cooperation between T.vaginalis and its symbionts in the development of vaginal dysbiosis.
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Affiliation(s)
| | - Pier Luigi Fiori
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy.,Mediterranean Center for Disease Control, Sassari, Italy
| | - Paola Rappelli
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy.,Mediterranean Center for Disease Control, Sassari, Italy
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16
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Trong Le N, Viet Ho D, Quoc Doan T, Tuan Le A, Raal A, Usai D, Sanna G, Carta A, Rappelli P, Diaz N, Cappuccinelli P, Zanetti S, Thi Nguyen H, Donadu MG. Biological Activities of Essential Oils from Leaves of Paramignya trimera (Oliv.) Guillaum and Limnocitrus littoralis (Miq.) Swingle. Antibiotics (Basel) 2020; 9:antibiotics9040207. [PMID: 32344551 PMCID: PMC7235712 DOI: 10.3390/antibiotics9040207] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 04/16/2020] [Accepted: 04/22/2020] [Indexed: 12/27/2022] Open
Abstract
The present study aimed to determine the bioactivities of essential oils extracted from the leaves of Paramignya trimera and Limnocitrus littoralis, including cytotoxicity, antiviral, antibacterial, antimycotic, and antitrichomonas effects. Herein, it was indicated that P. trimera and L. littoralis oils showed no cytotoxicity on normal cells, namely MT-4, BHK-21, MDBK, and Vero-76. P. trimera oil (i) exhibited the strongest inhibition against Staphylococcus aureus with MIC and MLC values of 2% (v/v); (ii) showed MIC and MLC values of 8% (v/v) in Candida parapsilosis; and (iii) in the remaining strains, showed MIC and MLC values greater than or equal to 16% (v/v). On the other hand, L. littoralis oil (i) displayed the strongest inhibition against Candida tropicalis and Candida parapsilosis with 2% (v/v) of MIC and MLC; and (ii) in the remaining strains, possessed MIC and MLC greater than or equal to 16% (v/v). In addition, antitrichomonas activities of the oils were undertaken, showing IC50, IC90, MLC values, respectively, at 0.016%, 0.03%, and 0.06% (v/v) from P. trimera, and 0.03%, 0.06%, 0.12% (v/v) from L. littoralis, after 48 h of incubation. The oils were completely ineffective against ssRNA+ (HIV-1, YFV, BVDV, Sb-1, CV-B4), ssRNA- (RSV, VSV), dsRNA (Reo-1), and dsDNA (HSV-1, VV) viruses. This is the first report describing the cytotoxicity, antiviral, antibacterial, antimycotic, and antitrichomonas activities of the essential oils of P. trimera and L. littoralis.
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Affiliation(s)
- Nhan Trong Le
- Faculty of Pharmacy, Hue University of Medicine and Pharmacy, Hue University, Hue 49000, Viet Nam; (N.T.L.); (D.V.H.); (T.Q.D.)
| | - Duc Viet Ho
- Faculty of Pharmacy, Hue University of Medicine and Pharmacy, Hue University, Hue 49000, Viet Nam; (N.T.L.); (D.V.H.); (T.Q.D.)
| | - Tuan Quoc Doan
- Faculty of Pharmacy, Hue University of Medicine and Pharmacy, Hue University, Hue 49000, Viet Nam; (N.T.L.); (D.V.H.); (T.Q.D.)
| | - Anh Tuan Le
- Mientrung Institute for Scientific Research, VAST, Hue 49000, Viet Nam;
| | - Ain Raal
- Institute of Pharmacy, Faculty of Medicine, University of Tartu, 50900 Tartu, Estonia;
| | - Donatella Usai
- Department of Biomedical Science, University of Sassari, 07100 Sassari, Italy; (D.U.); (P.R.); (N.D.); (S.Z.); (M.G.D.)
| | - Giuseppina Sanna
- Department of Biomedical Science, University of Cagliari, 09042 Monserrato, Italy;
| | - Antonio Carta
- Department of Chemistry and Pharmacy, University of Sassari, 07100 Sassari, Italy;
| | - Paola Rappelli
- Department of Biomedical Science, University of Sassari, 07100 Sassari, Italy; (D.U.); (P.R.); (N.D.); (S.Z.); (M.G.D.)
| | - Nicia Diaz
- Department of Biomedical Science, University of Sassari, 07100 Sassari, Italy; (D.U.); (P.R.); (N.D.); (S.Z.); (M.G.D.)
| | - Piero Cappuccinelli
- Department of Biomedical Science, University of Sassari, 07100 Sassari, Italy; (D.U.); (P.R.); (N.D.); (S.Z.); (M.G.D.)
- Correspondence: (P.C.); (H.T.N.)
| | - Stefania Zanetti
- Department of Biomedical Science, University of Sassari, 07100 Sassari, Italy; (D.U.); (P.R.); (N.D.); (S.Z.); (M.G.D.)
| | - Hoai Thi Nguyen
- Faculty of Pharmacy, Hue University of Medicine and Pharmacy, Hue University, Hue 49000, Viet Nam; (N.T.L.); (D.V.H.); (T.Q.D.)
- Correspondence: (P.C.); (H.T.N.)
| | - Matthew Gavino Donadu
- Department of Biomedical Science, University of Sassari, 07100 Sassari, Italy; (D.U.); (P.R.); (N.D.); (S.Z.); (M.G.D.)
- Department of Chemistry and Pharmacy, University of Sassari, 07100 Sassari, Italy;
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17
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In vitro Antimicrobial Activity of Essential Oil Extracted from Leaves of Leoheo domatiophorus Chaowasku, D.T. Ngo and H.T. Le in Vietnam. PLANTS 2020; 9:plants9040453. [PMID: 32260297 PMCID: PMC7237999 DOI: 10.3390/plants9040453] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 03/26/2020] [Accepted: 04/01/2020] [Indexed: 12/18/2022]
Abstract
:The present study aimed to determine the antimicrobial activity and chemical composition of leaves-extracted essential oil of Leoheo domatiophorus Chaowasku, D.T. Ngo and H.T. Le (L. domatiophorus), including antibacterial, antimycotic, antitrichomonas and antiviral effects. The essential oil was obtained using hydrodistillation, with an average yield of 0.34 ± 0.01% (v/w, dry leaves). There were 52 constituents as identified by GC/MS with available authentic standards, representing 96.74% of the entire leaves oil. The essential oil was comprised of three main components, namely viridiflorene (16.47%), (-)-δ-cadinene(15.58%) and γ-muurolene (8.00%). The oil showed good antimicrobial activities against several species: Gram-positive strains: Staphylococcus aureus (two strains) and Enterococcus faecalis, with Minimum Inhibitory Concentration (MIC) and Minimum Lethal Concentration (MLC) values from 0.25 to 1% (v/v); Gram-negative strains such as Escherichia coli (two strains), Pseudomonas aeruginosa (two strains) and Klebsiella pneumoniae, with MIC and MLC values between 2% and 8% (v/v); and finally Candida species, having MIC and MLC between 0.12 and 4% (v/v).Antitrichomonas activity of the oil was also undertaken, showing IC50, IC90 and MLC values of 0.008%, 0.016% and 0.03% (v/v), respectively, after 48h of incubation. The essential oil resultedin being completely ineffective against tested viruses, ssRNA+ (HIV-1, YFV, BVDV, Sb-1, CV-B4), ssRNA- (hRSVA2, VSV), dsRNA (Reo-1), and dsDNA (HSV-1, VV) viruses with EC50 values over 100 µg/mL. This is the first, yet comprehensive, scientific report about the chemical composition and pharmacological properties of the essential oil in L. domatiophorus.
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18
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Margarita V, Marongiu A, Diaz N, Dessì D, Fiori PL, Rappelli P. Prevalence of double-stranded RNA virus in Trichomonas vaginalis isolated in Italy and association with the symbiont Mycoplasma hominis. Parasitol Res 2019; 118:3565-3570. [PMID: 31701295 DOI: 10.1007/s00436-019-06469-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 09/22/2019] [Indexed: 01/25/2023]
Abstract
The flagellated protozoon Trichomonas vaginalis, responsible for trichomoniasis, can establish a symbiotic relationship with the bacterium Mycoplasma hominis and can harbor double-stranded RNA Trichomonasvirus (TVV). In this study, we investigated by real-time PCR the prevalence of the four TVVs and of M. hominis among 48 T. vaginalis strains isolated in Italy, and we evaluated a possible association with metronidazole resistance. Fifty percent of the analyzed trichomonad strains tested positive for at least one TVV T. vaginalis, with TVV2 being the most prevalent, followed by TVV1 and TVV3. Two T. vaginalis strains were infected by TVV4, detected in Europe for the first time. Interestingly, we found more than one TVV species in 75% of positive trichomonad strains. M. hominis was present in 81.25% of T. vaginalis isolates tested, and no statistically significant association was observed with the infection by any TVV. Metronidazole sensitivity of T. vaginalis isolates was evaluated in vitro, and no correlation was observed between minimal lethal concentration and the presence of TVVs. This is the first report on TVV infection of T. vaginalis in Italy. Even if no association of TVV positive isolates with the presence of the symbiont M. hominis or with metronidazole resistance was observed, further studies are needed to shed light on the effective role of infecting microorganisms on the pathophysiology of T. vaginalis.
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Affiliation(s)
- Valentina Margarita
- Department of Biomedical Sciences, University of Sassari, Viale S. Pietro 43/B, 07100, Sassari, Italy
| | - Alessandra Marongiu
- Department of Biomedical Sciences, University of Sassari, Viale S. Pietro 43/B, 07100, Sassari, Italy
| | - Nicia Diaz
- Department of Biomedical Sciences, University of Sassari, Viale S. Pietro 43/B, 07100, Sassari, Italy
| | - Daniele Dessì
- Department of Biomedical Sciences, University of Sassari, Viale S. Pietro 43/B, 07100, Sassari, Italy
- Mediterranean Center for Disease Control (MCDC), Università degli Studi di Sassari, Sassari, Italy
| | - Pier Luigi Fiori
- Department of Biomedical Sciences, University of Sassari, Viale S. Pietro 43/B, 07100, Sassari, Italy.
- Mediterranean Center for Disease Control (MCDC), Università degli Studi di Sassari, Sassari, Italy.
| | - Paola Rappelli
- Department of Biomedical Sciences, University of Sassari, Viale S. Pietro 43/B, 07100, Sassari, Italy
- Mediterranean Center for Disease Control (MCDC), Università degli Studi di Sassari, Sassari, Italy
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19
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Abstract
Trichomonas vaginalis is an anaerobic protist, responsible for the most prevalent non-viral sexually transmitted infection in humans. One of the most intriguing aspects of T. vaginalis pathobiology is the complex relationship with intracellular microbial symbionts: a group of dsRNA viruses belonging to family of Totiviridae (T. vaginalis virus), and eubacteria belonging to the Mycoplasma genus, in particular Mycoplasma hominis. Both microorganisms seem to strongly influence the lifestyle of T. vaginalis, suggesting a role of the symbiosis in the high variability of clinical presentation and sequelae during trichomoniasis. In the last few years many aspects of this unique symbiotic relationship have been investigated: M. hominis resides and replicates in the protozoan cell, and T. vaginalis is able to pass the bacterial infection to both mycoplasma-free protozoan isolates and human epithelial cells; M. hominis synergistically upregulates the proinflammatory response of human monocytes to T. vaginalis. Furthermore, the influence of M. hominis over T. vaginalis metabolism and physiology has been characterized. The identification of a novel species belonging to the class of Mollicutes (Candidatus Mycoplasma girerdii) exclusively associated to T. vaginalis opens new perspectives in the research of the complex series of events taking place in the multifaceted world of the vaginal microbiota, both under normal and pathological conditions.
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