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2.
J Math Biol ; 86(5): 75, 2023 04 14.
Artigo em Inglês | MEDLINE | ID: mdl-37058156

RESUMO

The burden of sexually transmitted infections (STIs) poses a challenge due to its large negative impact on sexual and reproductive health worldwide. Besides simple prevention measures and available treatment efforts, prophylactic vaccination is a powerful tool for controlling some viral STIs and their associated diseases. Here, we investigate how prophylactic vaccines are best distributed to prevent and control STIs. We consider sex-specific differences in susceptibility to infection, as well as disease severity outcomes. Different vaccination strategies are compared assuming distinct budget constraints that mimic a scarce vaccine stockpile. Vaccination strategies are obtained as solutions to an optimal control problem subject to a two-sex Kermack-McKendrick-type model, where the control variables are the daily vaccination rates for females and males. One important aspect of our approach relies on conceptualizing a limited but specific vaccine stockpile via an isoperimetric constraint. We solve the optimal control problem via Pontryagin's Maximum Principle and obtain a numerical approximation for the solution using a modified version of the forward-backward sweep method that handles the isoperimetric budget constraint in our formulation. The results suggest that for a limited vaccine supply ([Formula: see text]-[Formula: see text] vaccination coverage), one-sex vaccination, prioritizing females, appears to be more beneficial than the inclusion of both sexes into the vaccination program. Whereas, if the vaccine supply is relatively large (enough to reach at least [Formula: see text] coverage), vaccinating both sexes, with a slightly higher rate for females, is optimal and provides an effective and faster approach to reducing the prevalence of the infection.


Assuntos
Doenças Virais Sexualmente Transmissíveis , Infecções Sexualmente Transmissíveis , Vacinas , Masculino , Feminino , Humanos , Infecções Sexualmente Transmissíveis/epidemiologia , Infecções Sexualmente Transmissíveis/prevenção & controle , Vacinação , Cobertura Vacinal
3.
Psicol. ciênc. prof ; 43: e248137, 2023. tab
Artigo em Português | LILACS, INDEXPSI | ID: biblio-1431128

RESUMO

Objetivamos apresentar uma proposta de atendimento psicossocial grupal oferecida para mulheres adultas que cometeram ofensa sexual, cuidadoras e mães. A experiência está sendo desenvolvida no Distrito Federal, Brasil, com pessoas do gênero feminino provenientes de encaminhamento judicial. Carece que os profissionais das áreas da justiça, saúde, serviço social e psicologia avancem no estudo e na compreensão desta temática, de modo a pensarem a atuação e o apoio terapêutico a essas mulheres. O modo de atendimento é focal e breve, com ênfase na criação de um ambiente lúdico como facilitador das interações grupais e da discussão sobre os temas: identidade; confiança nas relações afetivas e sociais; vivência pessoal com violência física e sexual; configuração de gênero; e expressão da sexualidade e futuro. A abordagem individual também se baseia no enfoque dos temas mencionados. O oferecimento de ajuda à mulher cuidadora ou à mãe tem participação ativa na interrupção do circuito abusivo sexual, pois essa violência é extremamente ocultada, ocasionando uma prolongada vulnerabilidade para as vítimas. Ressalta-se o valor do texto indicando a descrição de ação voltada para uma população permanentemente não estudada e evitada em seu reconhecimento. Os limites desta proposta encontram-se na falta de outras iniciativas que possibilitem uma discussão sobre essa experiência.(AU)


We aim to present a proposal of a group psychosocial intervention offered for adult female sexual offenders, caregivers, and mothers. The intervention is being developed at Federal District, Brazil, with female people coming from judicial referrals. Professionals in the areas of justice, health, social work, and psychology need to advance in the study and understanding this theme to think about action and therapeutic support for these women. The intervention is a focal and brief approach, with emphasis on the creation of a ludic environment as a facilitator of group interactions and discussion about the themes: identity; trust in affective and social relationships; personal experience with physical and sexual violence; gender configuration; and sexuality expression and future. The individual approach is also based on focusing on these themes. The offering of help to the female caregiver or the mother has an active participation in the interruption of the sexual offense circuit, since this violence is extremely hidden, bringing a prolonged condition of vulnerability to the victims. The value of this text is highlighted indicating the description of an action directed to a population that is permanently not studied and whose recognition is avoided. The limits of this proposal are found in the absence of other initiatives that would allow a discussion about this experience.(AU)


Este texto presenta una propuesta de atención psicosocial grupal destinada a mujeres adultas que han cometido delito sexual, a cuidadoras y madres. La intervención se está desarrollando en el Distrito Federal (Brasil), con personas del género femenino provenientes de remisiones judiciales. Es necesario que los profesionales de las áreas de justicia, salud, trabajo social y psicología avancen en el estudio y comprensión de esta temática para pensar en el desempeño y apoyo terapéutico de estas mujeres. El servicio es enfocado y breve, con énfasis en la creación de un ambiente lúdico como facilitador de interacciones grupales y discusión sobre los temas: identidad; confianza en las relaciones afectivas y sociales; experiencia personal con violencia física y sexual; configuración de género; y expresión de la sexualidad y el futuro. El enfoque individual también se centra en estos temas. La oferta de ayuda a la mujer cuidadora o a la madre es importante para la interrupción del circuito de abuso sexual, ya que esta violencia es extremadamente oculta y provoca una vulnerabilidad prolongada a las víctimas. Se destaca el valor del texto con la descripción de la acción dirigida a una población que no es objeto de estudios ni reconocida. Los límites de esta propuesta se encuentran en la ausencia de otras iniciativas que permitan un debate sobre esta experiencia.(AU)


Assuntos
Humanos , Feminino , Adulto , Pessoa de Meia-Idade , Adulto Jovem , Delitos Sexuais , Identidade de Gênero , Intervenção Psicossocial , Ansiedade , Relações Pais-Filho , Pedofilia , Percepção , Arteterapia , Preconceito , Trabalho Sexual , Psicologia , Psicopatologia , Política Pública , Qualidade de Vida , Estupro , Rejeição em Psicologia , Segurança , Educação Sexual , Vergonha , Meio Social , Justiça Social , Problemas Sociais , Fatores Socioeconômicos , Transtornos de Estresse Pós-Traumáticos , Tabu , Tortura , Síndrome da Criança Espancada , Organização Mundial da Saúde , Abuso Sexual na Infância , Brasil , Doenças Virais Sexualmente Transmissíveis , Família , Maus-Tratos Infantis , Defesa da Criança e do Adolescente , Proteção da Criança , Responsabilidade Legal , Saúde da Mulher , Poder Familiar , Assédio Sexual , Coerção , Violência Doméstica , Conflito Psicológico , Anticoncepção , Vítimas de Crime , Estatística , Crime , Ameaças , Comportamento Perigoso , Negação em Psicologia , Confiança , Agressão , Sexologia , Violação de Direitos Humanos , Depressão , Medo , Criminosos , Saúde Sexual , Tráfico de Pessoas , Comportamento Criminoso , Abuso Físico , Reincidência , Direitos dos Prisioneiros , Androcentrismo , Liberdade , Experiências Adversas da Infância , Respeito , Abuso Emocional , Evitação da Informação , Privação Social , Bem-Estar Psicológico , Manobra Psicológica , Ódio , Promoção da Saúde , Direitos Humanos , Incesto , Infecções , Inibição Psicológica , Acontecimentos que Mudam a Vida , Solidão , Amor , Enganação , Imperícia , Masturbação , Narcisismo
4.
Trans R Soc Trop Med Hyg ; 116(7): 622-627, 2022 07 06.
Artigo em Inglês | MEDLINE | ID: mdl-34791493

RESUMO

BACKGROUND: The aim of this study is to show that human T-cell lymphotropic virus type 2 (HTLV-2) infection produces symptoms resembling those described for HTLV-1-associated myeloneuropathy and to highlight the role of sexual transmission in the silent dissemination of HTLV-2. METHODS: Patient samples were tested by particle agglutination and indirect immunofluorescence assay. The HTLV type was defined by molecular techniques. Nucleotide sequence analysis of HTLV-2 long terminal repeat region, T cell CD3/CD4 and T cell CD3/CD8 counts and typing of human leucocyte antigen (HLA) alleles A, B, C and DRB1 were also performed. RESULTS: HTLV-2 subtype b infection was confirmed in two blood donors and their sexual partners. Two patients exhibited distinctive signs and symptoms of progressive neurological disease. Three infected patients carried HLA-C*04. Both patients with neurological disease also carried HLA-A*31 and HLA-DRB1*07 alleles. CONCLUSIONS: Herein we describe for the first time sexual transmission of HTLV-2 in a non-endemic region of Argentina, highlighting the relevance of this transmission route in HTLV-2 silent dissemination out of the clusters of endemicity. We also provide evidence that HTLV-2 infection causes symptoms resembling those described for HTLV-1-associated myeloneuropathy. The evidence presented herein points to the critical need for public health strategies to reduce the spread of this neglected infection.


Assuntos
Vírus Linfotrópico T Tipo 2 Humano , Doenças Neurodegenerativas , Doenças Virais Sexualmente Transmissíveis , Argentina/epidemiologia , Vírus Linfotrópico T Tipo 2 Humano/patogenicidade , Humanos , Doenças Neurodegenerativas/virologia
5.
Viruses ; 13(11)2021 11 08.
Artigo em Inglês | MEDLINE | ID: mdl-34835050

RESUMO

Following the recent outbreak of Zika virus (ZIKV) infections in Latin America, ZIKV has emerged as a global health threat due to its ability to induce neurological disease in both adults and the developing fetus. ZIKV is largely mosquito-borne and is now endemic in many parts of Africa, Asia, and South America. However, several reports have demonstrated persistent ZIKV infection of the male reproductive tract and evidence of male-to-female sexual transmission of ZIKV. Sexual transmission may broaden the reach of ZIKV infections beyond its current geographical limits, presenting a significant threat worldwide. Several mouse models of ZIKV infection have been developed to investigate ZIKV pathogenesis and develop effective vaccines and therapeutics. However, the majority of these models focus on mosquito-borne infection, while few have considered the impact of sexual transmission on immunity and pathogenesis. This review will examine the advantages and disadvantages of current models of mosquito-borne and sexually transmitted ZIKV and provide recommendations for the effective use of ZIKV mouse models.


Assuntos
Modelos Animais de Doenças , Doenças Virais Sexualmente Transmissíveis/transmissão , Infecção por Zika virus/transmissão , Animais , Feminino , Camundongos , Gravidez , Complicações Infecciosas na Gravidez/prevenção & controle , Complicações Infecciosas na Gravidez/virologia , Doenças Virais Sexualmente Transmissíveis/prevenção & controle , Doenças Transmitidas por Vetores/prevenção & controle , Doenças Transmitidas por Vetores/transmissão , Doenças Transmitidas por Vetores/virologia , Zika virus/fisiologia , Infecção por Zika virus/prevenção & controle , Infecção por Zika virus/virologia
6.
Front Immunol ; 12: 750365, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34745123

RESUMO

Zika virus (ZIKV) received worldwide attention over the past decade when outbreaks of the disease were found to be associated with severe neurological syndromes and congenital abnormalities. Unlike most other flaviviruses, ZIKV can spread through sexual and transplacental transmission, adding to the complexity of Zika pathogenesis and clinical outcomes. In addition, the spread of ZIKV in flavivirus-endemic regions, and the high degree of structural and sequence homology between Zika and its close cousin Dengue have raised questions on the interplay between ZIKV and the pre-existing immunity to other flaviviruses and the potential immunopathogenesis. The Zika epidemic peaked in 2016 and has affected over 80 countries worldwide. The re-emergence of large-scale outbreaks in the future is certainly a possibility. To date, there has been no approved antiviral or vaccine against the ZIKV. Therefore, continuing Zika research and developing an effective antiviral and vaccine is essential to prepare the world for a future Zika epidemic. For this purpose, an in-depth understanding of ZIKV interaction with many different pathways in the human host and how it exploits the host immune response is required. For successful infection, the virus has developed elaborate mechanisms to escape the host response, including blocking host interferon response and shutdown of certain host cell translation. This review provides a summary on the key host factors that facilitate ZIKV entry and replication and the mechanisms by which ZIKV antagonizes antiviral innate immune response and involvement of adaptive immune response leading to immunopathology. We also discuss how ZIKV modulates the host immune response during sexual transmission and pregnancy to induce infection, how the cross-reactive immunity from other flaviviruses impacts ZIKV infection, and provide an update on the current status of ZIKV vaccine development.


Assuntos
Infecção por Zika virus , Imunidade Adaptativa , Animais , Autoimunidade , Reações Cruzadas , Feminino , Síndrome de Guillain-Barré/etiologia , Síndrome de Guillain-Barré/imunologia , Interações Hospedeiro-Patógeno , Humanos , Imunidade Inata , Gravidez , Doenças Virais Sexualmente Transmissíveis/imunologia , Doenças Virais Sexualmente Transmissíveis/transmissão , Zika virus/fisiologia , Infecção por Zika virus/complicações , Infecção por Zika virus/imunologia , Infecção por Zika virus/transmissão
7.
J Infect Dev Ctries ; 15(7): 989-996, 2021 07 31.
Artigo em Inglês | MEDLINE | ID: mdl-34343124

RESUMO

INTRODUCTION: Risk factors and outcomes of sexually-acquired human immunodeficiency virus infection were characterized in Jamaican children and adolescents. METHODOLOGY: Management was carried out by multidisciplinary teams in Infectious Diseases clinics during August 2003 through February 2019 using modified World Health Organization HIV criteria. RESULTS: There were 78 clients, aged 6 to 19 years, with females:males = 4:1 (p < 0.05). Sexual-initiation occurred in 60%, 47 before < 16 years (median 13 years, with four < 10 years; females:males = 7:1). Sexual-initiation preceded HIV diagnosis in all cases (median 2 years). Secondary education 93% (69/77) and living with non-parental relatives 17% (13/78) were associated with early sexual-initiation (p < 0.042); as was later imprisonment in 6% (3/52). Other sexually transmitted infections 36% (19/53) were associated with sexual-initiation ≥ 16 years (p < 0.01). Risks for ongoing HIV-transmission included infrequent condom use 74% (39/53), body-piercings 50% (24/48), illicit drug use 37% (28/76), tattoos 36% (19/52), transactional sex 14% (7/53) and pregnancy 56% of girls. 77% (59/77) had Centres for Diseases Control's Category A HIV infection; 82% (61/75) initiated anti-retroviral therapy; 75% (56/75) had first-line drugs, with helper T lymphocyte counts ≥ 500 cells/µL in 61% (48/78) and HIV viral load of < 1,000 copies/µL in 63% (40/64). Complications included dermatological 39% (20/52), respiratory 25% (13/52) and neurological 15% (8/52). Early sexual initiation was associated with depression 43% (33/76; p < 0.004) and suicidal attempt or ideation 23% (18/77; p < 0.096). Four (5%) died. CONCLUSIONS: Sexually transmitted HIV/AIDS in children and adolescents should preempt prompt medical, legal and psychosocial interventions.


Assuntos
Infecções por HIV/epidemiologia , Infecções por HIV/transmissão , Delitos Sexuais/estatística & dados numéricos , Adolescente , Criança , Abuso Sexual na Infância/estatística & dados numéricos , Feminino , Infecções por HIV/etiologia , Humanos , Jamaica/epidemiologia , Masculino , Fatores de Risco , Doenças Virais Sexualmente Transmissíveis/epidemiologia , Doenças Virais Sexualmente Transmissíveis/etiologia , Doenças Virais Sexualmente Transmissíveis/transmissão , Adulto Jovem
8.
J Sex Marital Ther ; 47(7): 731-737, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34346289

RESUMO

INTRODUCTION: Given the important role of sexual activity in most people's lives, in response to the question of whether the coronavirus is transmitted through sexual contact, this study was conducted to investigate the association of coronavirus transition with sexual contact. METHODS: Based on the PRISMA checklist, we review published articles on sexual contact with the Corona virus until 15 February 2021. Electronic databases based on search strategy including PubMed, Scopus, Web of Science was searched to identify relevant papers in English language. RESULTS: Retrieved from 4671, 29 titles and abstracts articles screened, eight were excluded. There were 21 articles in the selection criteria. Of the 21 studies whose full text was read, only 5 studies stated that coronavirus was not transmitted through sexual contact, and 16 articles argued that sexual transmission of the virus could not be ignored. Most studies have confirmed the transmission of the virus through semen, but its transmission through vaginal secretions is unknown. CONCLUSION: Transmission of the virus through semen should be taken seriously in patients and the necessary education should be given to men and their sexual partners. Health care providers need to increase their knowledge and awareness to provide the best practices to reduction the risks related to Covid-19 sexual transmission through counseling and appropriate approaches.


Assuntos
COVID-19/prevenção & controle , COVID-19/transmissão , Coito , SARS-CoV-2/isolamento & purificação , Sêmen/virologia , Parceiros Sexuais , Doenças Virais Sexualmente Transmissíveis/prevenção & controle , Doenças Virais Sexualmente Transmissíveis/virologia , COVID-19/virologia , Feminino , Humanos , Masculino , Sexo Seguro , Doenças Virais Sexualmente Transmissíveis/transmissão , Vagina/metabolismo , Vagina/virologia
9.
Medicine (Baltimore) ; 100(28): e26640, 2021 07 16.
Artigo em Inglês | MEDLINE | ID: mdl-34260561

RESUMO

INTRODUCTION: In recent years, with the development of molecular epidemiology, molecular transmission networks based on evolutionary theory and sequence analysis have been widely used in research on human immunodeficiency virus (HIV)-1 transmission dynamics and precise intervention for high-risk populations. The HIV-1 molecular transmission network is a new method to study the population's access to the network, the characteristics of clustering, and the characteristics of interconnection in the network. Here, we analyzed the characteristics of the HIV-1 molecular transmission network of sexually transmitted people in Liaoning Province. METHODS: A study of HIV-infected persons who were sexually transmitted in Liaoning Province from 2003 to 2019. HIV-1 RNA was extracted, amplified and sequenced, and a phylogenetic tree was constructed to determine the subtype using the well matched pol gene region sequence. The gene distance between sequences was calculated, the threshold was determined, and the molecular transmission network was constructed. RESULTS: 109 samples of pol gene region were obtained. The main subtype of HIV-1 was CRF01_AE, followed by B, CRF07_BC, etc. 12.8% of them were resistant to HIV. At the threshold of 0.55 gene distance, 60.6% of them entered the HIV-1 molecular transmission network. Workers, sample source voluntary counseling and testing, other testing, subtype B and drug resistance are the factors influencing the access to HIV-1 molecular transmission network. The subtype of CRF01_AE formed 6 clusters in the molecular transmission network. In the network, the difference of connection degree between different subtypes was statistically significant. DISCUSSION: The three subtypes CRF01_AE, CRF07_BC and B that enter the molecular transmission network do not have interconnections, and they form clusters with each other. It shows that the risk of transmission among the three subtypes is less than the risk of transmission within each subtype. The factors affecting HIV-1 entry into the molecular transmission network were occupation, sample source, genotype and drug resistance. The L33F mutation at the HIV-1 resistance mutation site constitutes the interconnection in the largest transmission cluster in the network. The epidemiological characteristics of HIV-infected persons in each molecular transmission cluster show that 97% of the study subjects come from the same area and have a certain spatial aggregation. CONCLUSION: Constructing a molecular transmission network and conducting long-term monitoring, while taking targeted measures to block the spread of HIV can achieve precise prevention and control.


Assuntos
Infecções por HIV/epidemiologia , Infecções por HIV/genética , HIV-1/genética , Doenças Virais Sexualmente Transmissíveis/epidemiologia , Doenças Virais Sexualmente Transmissíveis/genética , Adulto , China/epidemiologia , Feminino , Genótipo , Infecções por HIV/etnologia , Infecções por HIV/transmissão , Comportamentos Relacionados com a Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Epidemiologia Molecular , RNA Viral , Análise de Sequência de DNA , Doenças Virais Sexualmente Transmissíveis/etnologia , Fatores Socioeconômicos
10.
Am J Clin Dermatol ; 22(4): 523-540, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-34008162

RESUMO

Viral venereal diseases remain difficult to treat. Human papilloma virus (HPV) and herpes simplex virus (HSV) are two common viral venereal diseases. HPV infections are characterized by anogenital warts and less commonly by premalignant or malignant lesions. HSV infections classically present as grouped vesicles on an erythematous base with associated burning or pain; however, immunosuppressed patients may have atypical presentations with nodular or ulcerative lesions. This review discusses the epidemiology, diagnosis, and management of anogenital HPV and HSV infections with an emphasis on treatment modalities for the practicing dermatologist. Diagnosis of these diseases typically relies on clinical assessment, although multiple diagnostic techniques can be utilized and are recommended when diagnosis is uncertain or evaluating an individual with increased risk of malignancy. Management of HPV and HSV infections involves appropriate counseling, screening, and multiple treatment techniques. Particularly for HPV infections, a practitioner may need to use a combination of techniques to achieve the desired outcome.


Assuntos
Infecções por Herpesviridae/diagnóstico , Infecções por Papillomavirus/diagnóstico , Doenças Virais Sexualmente Transmissíveis/diagnóstico , Dermatopatias Virais/diagnóstico , Alphapapillomavirus/isolamento & purificação , Terapia Combinada/métodos , Terapia Combinada/normas , Aconselhamento/normas , Dermatologia/métodos , Dermatologia/normas , Herpesviridae/isolamento & purificação , Infecções por Herpesviridae/epidemiologia , Infecções por Herpesviridae/terapia , Infecções por Herpesviridae/transmissão , Humanos , Programas de Rastreamento/normas , Infecções por Papillomavirus/epidemiologia , Infecções por Papillomavirus/terapia , Infecções por Papillomavirus/transmissão , Guias de Prática Clínica como Assunto , Prevalência , Fatores de Risco , Doenças Virais Sexualmente Transmissíveis/epidemiologia , Doenças Virais Sexualmente Transmissíveis/terapia , Doenças Virais Sexualmente Transmissíveis/transmissão , Pele/patologia , Pele/virologia , Dermatopatias Virais/epidemiologia , Dermatopatias Virais/terapia , Dermatopatias Virais/transmissão
11.
Virology ; 560: 43-53, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-34023724

RESUMO

Zika virus (ZIKV) can infect developing fetuses in utero and cause severe congenital defects independent of route of maternal infection. Infected men can shed ZIKV RNA in semen for over six months. Whether prolonged viral RNA shedding in semen indicates a persistent infection in the male reproductive tract is unknown. We hypothesized that if ZIKV establishes a persistent infection in the male reproductive tract (MRT), then immunosuppressant treatment should stimulate ZIKV replication and seminal shedding. Male mice were infected with ZIKV and immunosuppressed when they shed viral RNA but not infectious virus in ejaculates. Following immunosuppression, we did not detect infectious virus in ejaculates. However, we did detect ZIKV positive and negative sense RNA in the epididymal lumens of mice treated with cyclophosphamide, suggesting that ZIKV persists in the epididymis. This study provides insight into the mechanisms behind ZIKV sexual transmission, which may inform public health decisions regarding ZIKV risks.


Assuntos
Epididimo/virologia , Hospedeiro Imunocomprometido/imunologia , RNA Viral/isolamento & purificação , Infecção por Zika virus/transmissão , Zika virus/isolamento & purificação , Animais , Linhagem Celular , Chlorocebus aethiops , Ciclofosfamida/farmacologia , Tolerância Imunológica/imunologia , Imunossupressores/farmacologia , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Infecção Persistente/virologia , RNA Viral/genética , Recidiva , Sêmen/virologia , Doenças Virais Sexualmente Transmissíveis/transmissão , Células Vero , Eliminação de Partículas Virais/genética , Zika virus/genética
12.
Nat Commun ; 12(1): 2469, 2021 04 29.
Artigo em Inglês | MEDLINE | ID: mdl-33927207

RESUMO

Recognition of Zika virus (ZIKV) sexual transmission (ST) among humans challenges our understanding of the maintenance of mosquito-borne viruses in nature. Here we dissected the relative contributions of the components of male reproductive system (MRS) during early male-to-female ZIKV transmission by utilizing mice with altered antiviral responses, in which ZIKV is provided an equal opportunity to be seeded in the MRS tissues. Using microRNA-targeted ZIKV clones engineered to abolish viral infectivity to different parts of the MRS or a library of ZIKV genomes with unique molecular identifiers, we pinpoint epithelial cells of the epididymis (rather than cells of the testis, vas deferens, prostate, or seminal vesicles) as a most likely source of the sexually transmitted ZIKV genomes during the early (most productive) phase of ZIKV shedding into the semen. Incorporation of this mechanistic knowledge into the development of a live-attenuated ZIKV vaccine restricts its ST potential.


Assuntos
Epididimo/virologia , Células Epiteliais/virologia , Doenças Virais Sexualmente Transmissíveis/transmissão , Infecção por Zika virus/transmissão , Animais , Linhagem Celular , Chlorocebus aethiops , Epitélio/virologia , Feminino , Genitália Masculina/anatomia & histologia , Genitália Masculina/virologia , Masculino , Camundongos , Células Vero , Zika virus
13.
Arch Ital Urol Androl ; 93(1): 48-52, 2021 Mar 18.
Artigo em Inglês | MEDLINE | ID: mdl-33754609

RESUMO

INTRODUCTION: Severe Acute Respiratory Syndrome Coronavirus 2, (SARS-CoV-2) was first identified by the Chinese Centers for Disease Control and Prevention on January 8, 2020 and was declared as a global pandemic on March 11, 2020 by WHO. SARS-CoV-2 uses the Angiotensin-converting enzyme 2 (ACE2) receptor as an entry route, associated with the transmembrane serine protease protein (TMPRSS2), which makes the testis and particularly spermatogenesis potentially vulnerable, since this tissue has high expression of ACE2. MATERIAL AND METHODS: We performed a systematic literature review by electronic bibliographic databases in Pubmed, Scopus and ScienceDirect up to August 2020 about the effect of SARS-CoV-2 on male sexual function and its transmission, to assess possible repercussions on sex organs and the existence of a sexual transmission path. RESULTS: Although SARS-CoV-2 presence has not been found in testicle samples, it has been demonstrated that it causes histological changes compatible with orchitis, and sex hormone disturbances. TMPRSS2 is up-regulated in prostate cancer where it supports tumor progression, thus these patients may have a higher risk of SARS-CoV-2 infection. TMPRSS2 inhibitors may be useful for the treatment or prevention of COVID-19. No viral material has been found in blood or semen, however it has been proven to be present in stool and saliva. CONCLUSION: The male reproductive system would be highly vulnerable and susceptible to infection by SARS-CoV-2 given the expression of the ACE2 receptor in somatic and germ cells. The seminal fluid would remain free of viral presence in patients with COVID-19. Regardless, non-genital sex could be an important source of viral transmission. In assisted reproduction techniques all necessary tests must be carried out to ensure the donor is free of the virus at the time of collection and handling of the seminal sample.


Assuntos
COVID-19/complicações , COVID-19/transmissão , Disfunções Sexuais Fisiológicas/etiologia , Doenças Virais Sexualmente Transmissíveis/transmissão , Humanos , Masculino , Disfunções Sexuais Fisiológicas/terapia , Testículo/virologia
14.
J Infect Dis ; 224(5): 860-864, 2021 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-33395487

RESUMO

To understand the disease burden of sexually transmitted Zika virus (ZIKV), we prospectively followed a cohort of 359 adult and adolescent residents of an urban community in Salvador, Brazil, through the 2015 ZIKV epidemic. Later, in 2017, we used a retrospective survey to associate sexual behavior during the epidemic with ZIKV infection as defined by immunoglobulin G3 NS1 enzyme-linked immunosorbent assay. We found that males who engaged in casual sexual encounters during the epidemic were more likely (adjusted odds ratio, 6.2 [95% confidence interval, 1.2-64.1]) to be ZIKV positive, suggesting that specific groups may be at increased risk of sexually transmitted infections.


Assuntos
Áreas de Pobreza , Comportamento Sexual , Doenças Virais Sexualmente Transmissíveis/epidemiologia , Infecção por Zika virus/epidemiologia , Zika virus/isolamento & purificação , Adolescente , Adulto , Feminino , Humanos , Masculino , Estudos Retrospectivos , População Urbana
15.
JNCI Cancer Spectr ; 5(6)2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-34993415

RESUMO

The human papillomavirus (HPV) vaccine is effective at reducing the incidence of cervical cancer caused by HPV. Studies have shown that 1 dose of the HPV vaccine offers comparable protection against genital HPV infection as additional doses; however, it is unknown whether oral HPV prevalence also differs by number of vaccine doses. We examined differences in prevalence of oral HPV by number of doses using the National Health and Nutrition Examination Survey from 2009 to 2016. The prevalence of HPV 6, 11, 16, and 18 infections was statistically significantly lower in individuals who received 1 dose (0.3%, 95% confidence interval [CI] = 0.0% to 0.9%) or 2-3 doses (0.4%, 95% CI = 0.0% to 1.2%) compared with unvaccinated individuals (1.2%, 95% CI = 0.9% to 1.6%). Smokers, individuals who initiated oral sex at age 17 years or younger, and those with more than 2 oral sexual partners had higher rates of oral HPV infection. Ongoing prospective studies are essential to further evaluate the efficacy of a single-dose regimen for prevention of oral HPV.


Assuntos
Doenças da Boca/epidemiologia , Infecções por Papillomavirus/epidemiologia , Vacinas contra Papillomavirus/administração & dosagem , Adulto , Fatores Etários , Feminino , Papillomavirus Humano 11 , Papillomavirus Humano 16 , Papillomavirus Humano 18 , Papillomavirus Humano 6 , Humanos , Masculino , Doenças da Boca/virologia , Inquéritos Nutricionais , Infecções por Papillomavirus/prevenção & controle , Infecções por Papillomavirus/virologia , Prevalência , Comportamento Sexual/estatística & dados numéricos , Parceiros Sexuais , Doenças Virais Sexualmente Transmissíveis/prevenção & controle , Fumantes , Vacinação/estatística & dados numéricos
16.
Andrology ; 9(1): 48-52, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-32649023

RESUMO

As COVID-19 infections wreak havoc across the globe, attention has rightly been focused on the vital organ systems (lung, kidney and heart) that are vulnerable to viral attack and contribute to the acute pathology associated with this disease. However, we should not lose sight of the fact that COVID-19 will attack any cell type in the body expressing ACE2 - including human spermatozoa. These cells possess the entire repertoire of receptors (AT1R, AT2R, MAS) and ligand processing enzymes (ACE1 and ACE2) needed to support the angiotensin signalling cascade. The latter not only provides COVID-19 with a foothold on the sperm surface but may also promote integration, given the additional presence of a range of proteases (TMPRSS2, TMPRSS11B, TMPRSS12, furin) capable of promoting viral fusion. This article reviews the roles played by these various cellular constituents in maintaining the vitality of human spermatozoa and their competence for fertilization. The reproductive consequences of a viral attack on these systems, in terms of fertility and the risk of sexual transmission, are currently unknown. However, we should be alive to the possibility that there may be reproductive consequences of COVID-19 infection in young males that go beyond their capacity to survive a viral attack.


Assuntos
COVID-19/virologia , Infertilidade Masculina/virologia , SARS-CoV-2/isolamento & purificação , Doenças Virais Sexualmente Transmissíveis/virologia , Espermatozoides/virologia , Animais , COVID-19/diagnóstico , COVID-19/metabolismo , COVID-19/transmissão , Humanos , Infertilidade Masculina/diagnóstico , Infertilidade Masculina/metabolismo , Masculino , Receptores Virais/metabolismo , Medição de Risco , Fatores de Risco , Doenças Virais Sexualmente Transmissíveis/diagnóstico , Doenças Virais Sexualmente Transmissíveis/metabolismo , Doenças Virais Sexualmente Transmissíveis/transmissão , Espermatozoides/metabolismo
17.
Reprod Sci ; 28(1): 12-22, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-32638281

RESUMO

Rab proteins belong to the Ras superfamily of small monomeric GTPases. These G proteins are the main controllers of vesicular transport in every tissue, among them, the endometrium. They are in charge of to the functional subcellular compartmentalization and cargo transport between organelles and the plasma membrane. In turn, intracellular trafficking contributes to endometrial changes during the menstrual cycle, secretion to the uterine fluid, and trophoblast implantation; however, few reports analyze the role of Rab proteins in the uterus. In general, Rab proteins control the release of cytokines, growth factors, enzymes, hormones, cell adhesion molecules, and mucus. Further, the secretion of multiple compounds into the uterine cavity is required for successful implantation. Therefore, alterations in Rab-controlled intracellular transport likely impair secretory processes to the uterine fluid that may correlate with abnormal endometrial development and failed reproductive outcomes. Overall, they could explain recurrent miscarriages, female infertility, and/or assisted reproductive failure. Interestingly, estrogen (E2) and progesterone (P) regulate gene expression of Rab proteins involved in secretory pathways. This review aims to gather information regarding the role of Rab proteins and intracellular trafficking in the endometrium during the different menstrual phases, and in the generation of a receptive stage for embryo implantation, modulated by E2 and P. This knowledge might be useful for the development of novel reproductive therapies that overcome low implantation rates of assisted reproductive procedures.


Assuntos
Endométrio/metabolismo , Ciclo Menstrual/metabolismo , Proteínas rab de Ligação ao GTP/metabolismo , Animais , Endométrio/microbiologia , Endométrio/virologia , Estradiol/metabolismo , Feminino , Interações Hospedeiro-Patógeno , Humanos , Progesterona/metabolismo , Transporte Proteico , Doenças Bacterianas Sexualmente Transmissíveis/metabolismo , Doenças Bacterianas Sexualmente Transmissíveis/microbiologia , Doenças Virais Sexualmente Transmissíveis/metabolismo , Doenças Virais Sexualmente Transmissíveis/virologia
19.
J Infect Dis ; 223(4): 673-685, 2021 02 24.
Artigo em Inglês | MEDLINE | ID: mdl-32888023

RESUMO

BACKGROUND: Zika virus (ZIKV) is a mosquito-borne virus that is also transmitted sexually; however, the epidemiological relevance of ZIKV sexual transmission in endemic regions is unclear. METHODS: We performed a household-based serosurvey in Northeast Brazil to evaluate the differential exposure to ZIKV and chikungunya virus (CHIKV) among households. Individuals who participated in our previous arboviral disease cohort (indexes) were recontacted and enrolled, and their household members were newly enrolled. RESULTS: The relative risk of sexual partners being ZIKV-seropositive when living with a ZIKV-seropositive index participant was significantly higher, whereas this was not observed among nonsexual partners of the index. For CHIKV, both sexual and nonsexual partner household members living with a CHIKV-seropositive index had a significantly higher risk of being seropositive. In the nonindex-based dyadic and generalized linear mixed model analyses, the odds of sexual dyads having a concordant ZIKV plaque reduction neutralization test result was significantly higher. We have also analyzed retrospective clinical data according to the participants' exposure to ZIKV and CHIKV. CONCLUSIONS: Our data suggest that ZIKV sexual transmission may be a key factor for the high ZIKV seroprevalence among households in endemic areas and raises important questions about differential disease from the 2 modes of transmission.


Assuntos
Parceiros Sexuais , Doenças Virais Sexualmente Transmissíveis/epidemiologia , Infecção por Zika virus/epidemiologia , Infecção por Zika virus/transmissão , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Anticorpos Antivirais/sangue , Brasil/epidemiologia , Febre de Chikungunya/epidemiologia , Febre de Chikungunya/transmissão , Vírus Chikungunya/imunologia , Criança , Pré-Escolar , Características da Família , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Risco , Estudos Soroepidemiológicos , Comportamento Sexual , Doenças Virais Sexualmente Transmissíveis/transmissão , Adulto Jovem , Zika virus/imunologia
20.
Andrology ; 9(1): 30-32, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-32471002

RESUMO

Research is needed to understand the presence of the SARS-CoV-2 virus in semen, sexual transmissibility, and impact on sperm quality. Several studies have examined men recovering from COVID-19, but large-scale community-based testing is needed to ascertain the effects on the male reproductive tract, and the potential for prolonged transmission.


Assuntos
COVID-19/virologia , SARS-CoV-2/patogenicidade , Sêmen/virologia , Doenças Virais Sexualmente Transmissíveis/virologia , Espermatozoides/virologia , Animais , COVID-19/diagnóstico , COVID-19/transmissão , Teste para COVID-19 , Interações Hospedeiro-Patógeno , Humanos , Masculino , Análise do Sêmen , Doenças Virais Sexualmente Transmissíveis/diagnóstico , Doenças Virais Sexualmente Transmissíveis/transmissão , Espermatozoides/patologia , Virulência
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