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Background: Sexual minority men (SMM) face severe health inequities alongside negative experiences that drive avoidance of medical care. Understanding how SMM experience healthcare is paramount to improving this population's health. Patient-centered care, which emphasizes mutual respect and collaboration between patients and providers, may alleviate the disparaging effects of the homophobia that SMM face in healthcare settings., Objective: To explore how SMM perceive their experiences with healthcare providers and how care can most effectively meet their needs., Design: Semi-structured qualitative interviews focused on healthcare experiences, pre-exposure prophylaxis (PrEP), and HIV-related beliefs were conducted between July and November 2018., Participants: The study included a sample of 43 young adult SMM (ages 25-27), representing diverse socioeconomic, racial, and ethnic backgrounds, in New York City., Approach: Researchers utilized a multiphase, systematic coding method to identify salient themes in the interview transcripts., Key Results: Analyses revealed three main themes: (1) SMM perceived that their clinicians often lack adequate skills and knowledge required to provide care that considers participants' identities and behaviors; (2) SMM desired patient-centered care as a way to regain agency and actively participate in making decisions about their health; and (3) SMM felt that patient-centered care was more common with providers who were LGBTQ-affirming, including many who felt that this was especially true for LGBTQ-identified providers., Conclusions: SMM expressed a clear and strong desire for patient-centered approaches to care, often informed by experiences with healthcare providers who were unable to adequately meet their needs. However, widespread adoption of patient-centered care will require improving education and training for clinicians, with a focus on LGBTQ-specific clinical care and cultural humility. Through centering patients' preferences and experiences in the construction of care, patient-centered care can reduce health inequities among SMM and empower healthcare utilization in a population burdened by historic and ongoing stigmatization., (© 2024. The Author(s).)

Background: Peripheral artery disease (PAD) in hemodialysis (HD) patients has a significant social impact due to its prevalence, poor response to standard therapy and dismal prognosis. Rheopheresis is indicated by guidelines for PAD treatment., Materials and Methods: Twenty-five HD patients affected by PAD stage IV Lerichè-Fontaine and ischemic ulcer 1C or 2C according to the University of Texas Wound Classification System (UTWCS), without amelioration after traditional medical therapy and/or revascularization, were selected and underwent 12 Rheopheresis sessions in 10 weeks. Improvements in pain symptoms using Numerical Rating Scale (NRS), healing ulcers and laboratory hemorheological parameters have been evaluated., Results: A clinically and statistically significant mean value reduction and of relative percentage differences between estimated marginal means (Δ), calculated at each visits, of NRS was observed, with a maximum value (-48.5%) between the first and last visit. At the end of the treatment period 14.3% of ulcers were completely healed, 46.4% downgraded, 53.6% were stable. Overall, no ulcers upgraded. A statistically significant reduction of the Δ, between the first and last visit, for fibrinogen (-16%) was also observed., Conclusion: Rheopheresis reduced overall painful symptoms; data suggest that it could heal or improve ulcers and hemorheological laboratory parameters in HD patients with PAD and ischemic ulcers resistant to standard therapies., (© 2024 The Author(s). Journal of Clinical Apheresis published by Wiley Periodicals LLC.)

Background Residents lack confidence in caring for transgender individuals. More exposure and practice throughout training is needed. Objective To explore whether and how prior exposure to transgender health skills during medical school impacted competency with these skills during residency. Methods In 2022, all 101 internal medicine residents at New York University Grossman School of Medicine participated in an objective structured clinical examination (OSCE) station as part of their annual formative assessment where they cared for a standardized patient (SP) who identified as transgender. Three SPs who were members of the transgender community were recruited through online and social media forums. Two resident groups (continuum vs noncontinuum) differed in their prior experiences with transgender OSCEs during medical school. We analyzed SPs' ratings of resident performance using checklist data and SP open-ended feedback to compare performance between groups and resident post-OSCE evaluations to understand residents' perceptions of the educational value of the case. Results Residents with prior experience with transgender SPs (continuum) were more frequently recommended by SPs (88% [21 of 24] vs 70% [54 of 77]) to a family member or friend, were all rated professional (100% [24 of 24] vs 94% [72 of 94]) and scored better in pain information-gathering (92% vs 65%, mean summary score) and gender-affirming care skills (67% vs 52%, mean summary score). Noncontinuum residents lacked experience, missed opportunities to ask about gender identity, and needed work on demonstrating comfort and using proper language. Most residents completing a post-OSCE evaluation (80%, 41 of 51) rated the case as "very valuable." Conclusions Spaced practice and feedback through early exposure to transgender OSCEs were valuable for skill acquisition, giving continuum residents a learning advantage compared to noncontinuum residents.

Purpose: Medical mistrust is a barrier to health care utilization and is associated with suboptimal health outcomes. Research on mistrust among sexual minority men (SMM) is limited and largely focuses on Black SMM and HIV, with few studies assessing mistrust among SMM of other race/ethnicities. The purpose of this study was to examine differences in medical mistrust among SMM by race. Methods: From February 2018 to February 2019, a mixed-methods study examined the health-related beliefs and experiences of young SMM in New York City. The Group-Based Medical Mistrust Scale (GBMMS) was used to measure medical mistrust related to race, and a modified version of the scale assessed mistrust related to one's "sexual/gender minority" status (Group-Based Medical Mistrust Scale-Sexual/Gender Minority [GBMMS-SGM]). With an analytic sample of 183 cisgender SMM, a one-way multivariate analysis of variance was used to examine differences in GBMMS and GBMMS-SGM scores by race/ethnicity [Black, Latinx, White, "Another Racial Group(s)"]. Results: There were significantly different GBMMS scores by race, with participants of color reporting higher levels of race-based medical mistrust than White participants. This finding is supported by effect sizes ranging from moderate to large. Differences in GBMMS-SGM scores by race were borderline; however, the effect size for Black and White participants' GBMMS-SGM scores was moderate, indicating that higher GBMMS-SGM scores among Black participants is meaningful. Conclusion: Multilevel strategies should be used to earn the trust of minoritized populations, such as addressing both historical and ongoing discrimination, moving beyond implicit bias trainings, and strengthening the recruitment and retention of minoritized health care professionals.

Introduction: Substance use treatment settings can play a critical role in ending the HIV epidemic. Community-based methadone clinics are potentially useful sites to offer biomedical HIV prevention, but little is known about how clinicians and other clinic staff communicate with patients about sexual behavior and HIV-related topics., Methods: Thirty semi-structured interviews were conducted at two methadone clinics in Northern New Jersey. Participants included medical providers (physicians, RNs, DNPs), methadone counselors, intake coordinators, lab technicians, and other auxiliary staff members. Results: Three major themes were identified: (1) HIV education is primarily provided by external organizations, (2) there is limited staff-patient communication around HIV and sexual behaviors, and (3) HIV stigma is prevalent among staff and patients., Conclusion: To implement PrEP in methadone treatment settings, clinic staff must be able to engage in non-judgmental communication about HIV and sex with patients. Additionally, federal and state funding for HIV prevention in substance use treatment settings must be prioritized to enable clinics to access the necessary training and resources.

Public health models and medical interventions have often failed to consider the impact of reductionist HIV 'risk' discourse on how sexual minority men interpret, enact and embody biomedical knowledge in the context of sexual encounters. The aim of this study was to use an anthropological lens to examine sexual minority men's perception of HIV risk and experience within the medical system in order to examine the influence of risk discourse on their health, behaviour and social norms. In-depth interviews ( n  = 43) were conducted with a racially, ethnically and socioeconomically diverse sample of young sexual minority men and explored HIV-related beliefs and experiences, as well as their interactions with healthcare providers. Findings suggest that the stigmatisation of behaviours associated with HIV appears to be shaped by three key forces: healthcare provider perceptions of sexual minority men as inherently 'risky', community slut-shaming, and perceptions of risk related to anal sex positioning. Stigmatising notions of risk appear to be embodied through sexual health practices and identities vis-à-vis preferred anal sex positions and appear to influence condom use and PrEP initiation.

Objectives: The purpose of this study was to examine the feasibility of implementing pre-exposure prophylaxis (PrEP), a daily oral medication for human immunodeficiency virus (HIV) prevention, in methadone clinics., Methods: Medical and nonmedical staff (n = 30) at 2 methadone clinics in Northern New Jersey were qualitatively interviewed about various aspects of substance use treatment, clinical operations, and HIV risk and prevention among their patient populations. Audio-recorded interviews were professionally transcribed, then coded and analyzed by the research team., Results: Themes surrounding the viability of PrEP implementation emerged for both logistical facilitators and barriers. Facilitators included availability of prescribing clinicians, ability to conduct lab testing on-site, and availability of existing hepatitis C programs as a blueprint for PrEP management. Barriers included increased provider burden, financial concerns, and perceptions that PrEP provision is outside the clinic's treatment scope., Conclusions: Although staff expressed willingness and potential ability to provide PrEP, they identified barriers regarding insurance reimbursement, limited funding, and concerns that PrEP would extend the clinic's treatment scope. However, given the enabling factors such as availability of providers and existing clinical infrastructure, providing PrEP could increase clinic revenue through insurance reimbursement and federal funding for PrEP-related services. Clinic-level education is needed for clinical and nonclinical staff to better understand the logistics of implementing PrEP, particularly regarding prescribing practices, billing and insurance concerns, and the essential nature of HIV prevention as a critical component of substance use treatment., Competing Interests: The authors report no conflicts of interest., (Copyright © 2022 American Society of Addiction Medicine.)

Cisgender sexual minority men (SMM) and transgender women are disproportionately vulnerable to HPV-related anal cancer, but little is known about longitudinal predictors of high-risk human papillomavirus (hrHPV) infection in this population. As such, this analysis aims to identify factors associated with incident anal hrHPV infection in a diverse cohort of young SMM and transgender women. This study of HPV infection, nested within a larger cohort study, took place between October 2015 and January 2020. Participants completed a brief computer survey assessing HPV symptomatology, risk, and prevention alongside multi-site testing, in addition to biannual cohort study assessments. In the analytic sample of 137 participants, 31.6% tested positive for an anal hrHPV infection, with 27.0% and 29.9% testing positive for incident anal hrHPV infections at Visits 2 and 3, respectively. When adjusting for time between study visits, participants had significantly greater odds of incident anal hrHPV at Visit 2 if they had a concurrent HSV infection (AOR = 5.08 [1.43, 18.00]). At Visit 3, participants had significantly greater odds of incident anal hrHPV infection if they reported a greater number of sex partners in the previous month (AOR = 1.25 [1.03, 1.51]). Prevalence of cancer-causing HPV at baseline was high and many participants tested positive for additional types of anal hrHPV at subsequent visits. Risk for newly detected anal hrHPV infection was significantly associated with biological and behavioral factors. Our findings strongly indicate a need for programs to increase uptake of HPV vaccination and provide HPV-related health education for sexual and gender minorities.

Background: Nevoid basal cell carcinoma syndrome (NBCCS) is a rare genetic disorder associated with basal cell carcinomas (BCC), skeletal anomalies, and jaw cysts, and a number of ocular abnormalities. We describe a case of a 12-year-old boy diagnosed with NBCCS found to have several ophthalmic manifestations including a myelinated retinal nerve fiber. We conducted a literature review targeting the ocular and systemic manifestations of NBCCS, with a focus on the ophthalmic findings that have not been well characterized., Materials and Methods: We conducted a literature search from 1960 to 2021 utilizing specific keywords and criteria and excluded non-clinical articles. A total of 46 articles were ultimately used for the literature review., Results: In NBCCS, BCCs typically present before the age of 30 and gradually become numerous. Certain ocular features, less common in the general population, are much more common with NBCCS. Depending on the study, prevalence of these features in patients with NBCCS ranges from 26-80% for hypertelorism and 7-36% for myelinated retinal nerve fiber layer. Prevalence of nystagmus in patients with NBCCS was found to be approximately 6%. Systemic findings such as bilamellar calcification of the falx cerebri, palmar pits, and odontogenic keratocysts (OKCs) are also prevalent., Conclusion: NBCCS may affect numerous organ systems, and thus requires a multidisciplinary team to manage. BCCs and jaw cysts are commonly occurring clinical features that have various surgical excisional options. The ocular anomalies of NBCCS are individually rare, and certain anomalies may present in the amblyogenic period of development and contribute to visual impairment.

The SARS-CoV-2 virus, the pathogen which causes COVID-19, has left an indelible impact on the daily lives of individuals in the USA. This study sought to explore the sexual behaviors among people in the LGBTQ+ population at the onset of the pandemic. Behaviors were explored across sub-groups of the population. The study employed data from an internet survey about the impact of COVID-19 on LGBTQ+ identified individuals conducted between May and July 2020. The final sample was comprised of 1090 participants from across the USA. Overall, sexual activity and the number of sexual partners decreased after March 13, 2020 (as compared to before this date) across all sexual orientation groups; however, living situation and partnership status supported sexual activity. Gay and bisexual men living with a partner or a spouse (AOR = 2.20, p = .023) and those living with a non-romantic roommate or friend (AOR = 2.88, p = .004) reported more sexual activity. For both cisgender lesbian and bisexual women and transgender and non-binary individuals, those who were married or in a domestic partnership (AOR = 4.54, p < .001; AOR = 9.97, p < .001, respectively) and those in a committed relationship (AOR = 3.54, p = .001; AOR = 8.46, p < .001, respectively) reported more sexual activity. Additionally, cisgender lesbian and bisexual women living with their partner or spouse (AOR = 2.14, p = .044) reported more sexual activity. When examining the number of sexual partners, cisgender lesbian and bisexual women and transgender and non-binary individuals in a committed relationship (AOR = 0.31, p < 0.001; AOR = 0.26, p = .004, respectively) and those living with a partner or spouse (AOR = 0.30, p = .002; AOR = 0.25, p = .028, respectively) were less likely to report two or more sexual partners. Examining the changes in sexual activity and number of sexual partners helps us better identify the effects of COVID-19 on intimate relationships and sexual behaviors. Furthermore, this study may help develop clinical best practices to facilitate risk-reduction strategies for LGBTQ+ populations when engaging in sexual activity within a communicable disease framework. Current guidance on sexual activity within a pandemic has created a unique opportunity for sex-positive public health messaging that protects individual health while also offering a framework for conversations about risk mitigation that is applicable for both COVID-19 and STI/HIV prevention., (© 2022. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)

We used an internet-based survey platform to conduct a cross-sectional survey regarding the impact of COVID-19 on the LGBTQ + population in the United States. While this method of data collection was quick and inexpensive, the data collected required extensive cleaning due to the infiltration of bots. Based on this experience, we provide recommendations for ensuring data integrity. Recruitment conducted between May 7 and 8, 2020 resulted in an initial sample of 1251 responses. The Qualtrics survey was disseminated via social media and professional association listservs. After noticing data discrepancies, research staff developed a rigorous data cleaning protocol. A second wave of recruitment was conducted on June 11-12, 2020 using the original recruitment methods. The five-step data cleaning protocol led to the removal of 773 (61.8%) surveys from the initial dataset, resulting in a sample of 478 participants in the first wave of data collection. The protocol led to the removal of 46 (31.9%) surveys from the second two-day wave of data collection, resulting in a sample of 98 participants in the second wave of data collection. After verifying the two-day pilot process was effective at screening for bots, the survey was reopened for a third wave of data collection resulting in a total of 709 responses, which were identified as an additional 514 (72.5%) valid participants and led to the removal of an additional 194 (27.4%) possible bots. The final analytic sample consists of 1090 participants. Although a useful and efficient research tool, especially among hard-to-reach populations, internet-based research is vulnerable to bots and mischievous responders, despite survey platforms' built-in protections. Beyond the depletion of research funds, bot infiltration threatens data integrity and may disproportionately harm research with marginalized populations. Based on our experience, we recommend the use of strategies such as qualitative questions, duplicate demographic questions, and incentive raffles to reduce likelihood of mischievous respondents. These protections can be undertaken to ensure data integrity and facilitate research on vulnerable populations., Competing Interests: Conflict of interestNot applicable., (© The Author(s), under exclusive licence to Springer Nature B.V. 2021.)

Introduction: The unemployment rate in the US reached record highs during the COVID-19 pandemic, but little is known about the job loss experiences of lesbian, gay, bisexual, transgender, and queer (LGBTQ+) individuals, who are already economically disadvantaged due to structural and social inequities., Methods: Cross-sectional data on unemployment due to COVID-19 were collected between May and July 2020 among 1090 individuals across the US through an online survey., Results: Respondents who had been employed prior to COVID-19 formed the analytic sample ( n = 990). Of these, 298 (27.3%) reported job loss or being furloughed due to COVID-19. When controlling for all other factors, we found statistically significant higher rates of unemployment among younger participants, HIV-positive individuals, men, Black and White non-Hispanic participants, those with less educational attainment, and those in multi-person homes., Conclusions: The employment of LGBTQ+ people has been undermined by COVID-19, but as with all populations, those with multiple minority identities, such as Black or HIV+ and LGBTQ+, have been most severely affected., Policy Implications: LGBTQ+ populations in the US have experienced high levels of unemployment due to COVID-19. This study highlights the need for national data collection on sexual orientation and gender identity for unemployment as well as the need for substantive policies, such as expanding unemployment to assist in the economic recovery for populations most affected by COVID-19 and the Equality Act to offer further workplace protections., Competing Interests: Conflict of InterestThe authors declare no competing interests., (© The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2021.)

Background: HIV prevention is needed among people who use drugs (PWUD) due to mixing sex and drugs, selling/trading sex, and/or injecting drugs. Pre-exposure prophylaxis (PrEP) is an extremely effective biomedical HIV prevention strategy, but uptake remains low among communities most in need of HIV prevention, including PWUD. Previous studies have found that providers are less willing to prescribe PrEP to PWUD, yet PWUD express high levels of PrEP acceptance. More research is needed to understand how people who provide substance use treatment services think about PrEP to maximize this biomedical prevention strategy., Methods: The study conducted semistructured interviews with 29 staff members in two methadone clinic settings in urban northern New Jersey. Staff members included medical providers, methadone counselors, intake coordinators, front desk staff, lab technicians, security guards, and administrative/leadership personnel., Results: All staff recognized the need for HIV prevention among their patient populations, but most were either unaware of PrEP or unfamiliar with its purpose and how it works. Medical providers were more likely to have some PrEP knowledge in comparison to counselors and other staff, but the former largely did not have in-depth knowledge. Among those familiar with PrEP, many confused PrEP with HIV medication, as Truvada was the only FDA-approved PrEP at the time of the study. About half of participants expressed clear support for PrEP, while the other half expressed mixed or negative attitudes related to HIV, sexual behavior, and mistrust of the medication. Both the positive and negative perceptions entailed stigmatizing elements., Recommendations: Due to patients' frequent interactions with non-medical staff (e.g., front desk staff, lab technicians, etc.), all staff, not only medical personnel, should be aware of PrEP and comfortable discussing it to foster well-informed, nonjudgmental conversations about HIV prevention with patients. PrEP education should specifically address HIV and sexual-related stigma, as even positive perceptions of PrEP may entail stigmatizing elements., (Copyright © 2021. Published by Elsevier Inc.)

Pre-exposure prophylaxis (PrEP) is an effective form of HIV prevention, but young sexual minority men face myriad barriers to PrEP uptake. Participants (n = 202) completed a survey on healthcare experiences and beliefs about HIV and PrEP. While 98% of the sample knew about PrEP, only 23.2% reported currently taking PrEP. Participants were more likely to be taking PrEP if they received PrEP information from a healthcare provider and endorsed STI-related risk compensation. Conversely, PrEP uptake was less likely among those with concerns about medication use and adherence. While there were no racial/ethnic differences in PrEP uptake, there were differences in correlates of PrEP use for White participants and participants of color. To facilitate PrEP uptake, clinicians should provide PrEP education and screen all patients for PrEP candidacy. Additionally, public health messaging must reframe HIV "risk", highlight benefits of STI testing, and emphasize the importance of preventive healthcare for SMM., (© 2021. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)

Objectives: Lesbian, gay, bisexual, transgender, or queer and questioning (LGBTQ+) people and populations face myriad health disparities that are likely to be evident during the COVID-19 pandemic. The objectives of our study were to describe patterns of COVID-19 testing among LGBTQ+ people and to differentiate rates of COVID-19 testing and test results by sociodemographic characteristics., Methods: Participants residing in the United States and US territories (N = 1090) aged ≥18 completed an internet-based survey from May through July 2020 that assessed COVID-19 testing and test results and sociodemographic characteristics, including sexual orientation and gender identity (SOGI). We analyzed data on receipt and results of polymerase chain reaction (PCR) and antibody testing for SARS-CoV-2 and symptoms of COVID-19 in relation to sociodemographic characteristics., Results: Of the 1090 participants, 182 (16.7%) received a PCR test; of these, 16 (8.8%) had a positive test result. Of the 124 (11.4%) who received an antibody test, 45 (36.3%) had antibodies. Rates of PCR testing were higher among participants who were non-US-born (25.4%) versus US-born (16.3%) and employed full-time or part-time (18.5%) versus unemployed (10.8%). Antibody testing rates were higher among gay cisgender men (17.2%) versus other SOGI groups, non-US-born (25.4%) versus US-born participants, employed (12.6%) versus unemployed participants, and participants residing in the Northeast (20.0%) versus other regions. Among SOGI groups with sufficient cell sizes (n > 10), positive PCR results were highest among cisgender gay men (16.1%)., Conclusions: The differential patterns of testing and positivity, particularly among gay men in our sample, confirm the need to create COVID-19 public health messaging and programming that attend to the LGBTQ+ population.

Age of sexual debut is a critical health indicator for young sexual minority men (YSMM), associated with an increased likelihood of HIV acquisition, use of alcohol, tobacco, and other substances, and psychological distress. This study examined the age of same-sex sexual debut for five sexual behaviors in a sample of racially/ethnically and socioeconomically diverse gay-identified YSMM in New York City. The mean age of sexual debut of any behavior was 14.5 years old and 19% of the sample reported sexual debut prior to age 13. Overall, mutual masturbation occurred at the youngest mean age, followed by performed oral, received oral, receptive anal, and insertive anal intercourse. There were significant differences by race/ethnicity and perceived familial socioeconomic status (SES), such that Black and Hispanic/Latino men had earlier ages of debut for performed oral and receptive and insertive anal sex, while upper SES men had later ages of debut for receptive and insertive anal intercourse. These findings are relevant to trends in HIV incidence in the U.S., which are highest among Black and Hispanic/Latino YSMM and may be associated with earlier age of sexual debut. These findings also underscore a need for comprehensive and inclusive sex education at younger ages.

Background: Sexual minority men (SMM) and transgender women (TW) are more likely to smoke cigarettes than heterosexual and cisgender peers, which may exacerbate existing disparities in mental and psychosocial health and substance use., Purpose: As few existing studies have examined the confluence of these factors, we sought to examine tobacco use in a diverse sample of SMM and TW and describe its relationship with other substance use and health., Methods: Data were drawn from a study of syndemic conditions among SMM and TW, which included measures assessing tobacco use, substance use, and mental, psychosocial, and general health., Results: A majority of the racially/ethnically and socioeconomically diverse sample (n = 665) reported ever smoking a cigarette, and more than half of them were current smokers. Current smoking was associated with more frequent recent substance use and poorer mental, psychosocial, and general health. In multivariable analyses, current smoking was predicted by more frequent substance use and more severe anxiety, when adjusting for demographic, substance use, and health factors., Conclusions: A syndemic approach to health conditions such as substance use, mental health, and psychosocial burden dictates a framework of interrelation and mutual exacerbation. In doing so, we found that current cigarette use was associated with more frequent alcohol and marijuana use and more severe anxiety, suggesting a confluence of cigarette smoking, other substance use, and mental health burden. We recommend a holistic approach to treating tobacco use in sexual and gender minority populations that addresses both substance use and the myriad psychosocial burdens that sexual and gender minority communities experience., (© Society of Behavioral Medicine 2020. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)

Human papillomavirus (HPV) is the most common sexually transmitted infection among adults in the United States, and can cause several types of cancer. This is of particular concern for sexual minority men, as their increased risk of HIV acquisition increases risk for HPV and HPV-associated cancers, particularly when coupled with low rates of HPV vaccination. As part of a larger study of the syndemic of HIV, substance use, and mental health among young sexual minority men in New York City, we sought to explore what sexual minority men know about HPV and the HPV vaccine, along with their experiences have been communicating about the virus and vaccine. We interviewed 38 young sexual minority men with diverse sociodemographic characteristics and identified three main themes: low knowledge about HPV infection and vaccination, highly gendered misconceptions about HPV only affecting women, and lack of communication from healthcare providers about HPV. The prevalence of incorrect HPV knowledge, coupled with inadequate education and vaccination in healthcare settings, indicates a missed opportunity for HPV prevention in a high-risk and high-need population.

Sexual and gender minority (SGM) youth experience housing instability, including homelessness, at higher rates than heterosexuals. Few studies have examined differences within SGM populations and intersections of housing and health. Data were drawn from a study of SGM young adults who were assigned male at birth. Nearly one-quarter of the sample reported homelessness, unstable housing, or both in the six months prior to assessment. Housing instability was higher among those of lower income and educational attainment. Additionally, those who experienced any housing instability reported higher levels of depression, poorer self-rated health, and greater gay-related stigma; in multivariable models, only self-rated health was related to housing status. Stigma and discrimination may lead to poorer mental health; housing instability and homelessness may be a manifestation of stigma perpetuated by social conditions and mental health burdens directed by familial rejection. Findings indicate the importance of a biopsychosocial perspective in addressing housing instability in SGM youth.

Introduction: Motivations for alcohol use to intoxication vary among young adults depending on social setting and other contextual factors. However, there is limited research exploring the role of different drinking motivations among young men who have sex with men (YMSM)., Methods: Data from a racially/ethnically and socioeconomically diverse sample of YMSM (n = 426) were used to examine associations between recent (last 30 days) alcohol use to intoxication and scores on three distinct drinking motivation subscales: convivial, intimate, and negative coping drinking. Multinomial logistic regression models were constructed to examine associations between drinking motivations and days of alcohol use to intoxication, controlling for sociodemographic characteristics., Results: YMSM who scored higher on all three drinking motivation subscales were more likely to engage in recent alcohol use to intoxication compared to those who reported no alcohol use to intoxication. In multivariable models, Black and Hispanic YMSM had lower odds of intoxication compared to White YMSM, and those reporting lower perceived familial SES had lower odds compared to higher SES. In a final model including all three motivations, only convivial drinking was significantly associated with days of intoxication (1-2 days: AOR = 1.22; 3+ days: AOR = 1.45)., Conclusions: This study identifies distinct associations between different motivations for drinking and alcohol use to intoxication in a sample of YMSM. These findings highlight a need to incorporate an understanding of motivations for alcohol use to intoxication into research and clinical practice with YMSM, as different reasons for drinking carry respective potential health risks., (Copyright © 2018 Elsevier Ltd. All rights reserved.)

Sexual and gender minority populations are significantly more likely to experience verbal and physical victimization in young adulthood. These analyses examine the types, contexts, and sources of lifetime sexual orientation and gender identity victimization (SGV) in a diverse sample of sexual minority men (SMM) and transgender women as well as the extent to which experiences of SGV vary between subgroups of the population. Cross-sectional data were collected as part of a study of sexual health, mental health, and HIV examined through the lens of syndemic production in young SMM. Measures assessed sociodemographic characteristics as well as the types, sources, and contexts of physical assault and verbal harassment due to actual or perceived gender or sexuality. Verbal harassment was more prevalent in the sample than physical assault (44.5% vs. 11.6%). Schools or sports teams and neighborhoods were the most common contexts for verbal and physical SGV. Strangers were the most frequent perpetrators of SGV, followed by family and peers. Bivariate analyses showed significant differences in SGV based on race, education, perceived familial SES, sexual identity, and borough of residence. In multivariate analyses, race, SES, sexual identity, and borough of residence were significant predictors of verbal SGV. Findings suggest that SGV experiences are not uniform in sexual minority young adults, and thus prevention and care must be targeted. Understanding the multiple identities of sexual minority young adults who experience greater levels of victimization can allow for policy and interventions to best support those at risk.

Background: Substance use and condomless sexual behaviours are both well studied in sexual minority men, but few researchers have used event-level data collection to examine sexualised drug use in sexual and gender minority young adults. The aim of this study is to describe the co-occurrence of sex under the influence of substances and condomless sexual behaviours, using nuanced event-level data, in a racially/ethnically and socioeconomically diverse sample in New York City., Methods: Data from one wave of a cohort of sexual and gender minority young adults who were assigned male at birth (n = 500) were used to characterise co-occurrence of sex under the influence of drugs and condomless sexual behaviours (oral receptive, anal insertive, and anal receptive sex), in the last 30 days. Logistic regression models were constructed to assess associations between sex while high and condomless sexual behaviours, controlling for sociodemographic factors., Results: Preliminary analyses indicated significant associations between engaging in sex while high and condomless sexual behaviours. In unadjusted regression models, sexualised and non-sexualised drug use were both significantly associated with increased odds of condomless sexual behaviours. In adjusted models, sexualised drug use remained significantly associated with condomless anal insertive sex (AOR = 3.57) and condomless anal receptive sex (AOR = 4.98). Having multiple sexual partners was also significantly associated with greater odds of condomless sexual activity in all three adjusted models., Conclusion: Multivariable analyses indicated that engaging in sex while high on any drug was associated with increased condomless sexual behaviour, but that sexualised drug use was associated with particularly elevated condomless anal sex. These findings provide insight for understanding the co-occurrence of substance use and condomless sex, and suggest a need for HIV/STI risk reduction strategies that address the role of sexualised drug use., (Copyright © 2018 Elsevier B.V. All rights reserved.)

The uremic syndrome is attributed to the progressive retention of a large number of toxins, which under normal conditions are excreted by the healthy kidneys. Standard dialytic membranes do not purify middle-high molecular weight toxins. Haemodiafiltration with endogenous reinfusion coupled with a highly permeable membrane could break the limit of the 'albumin wall' improving the dialytic depuration without loss of important nutrients. The aim of this study was to evaluate the performance of a new polysulfone membrane, Synclear 0.2, to remove uremic molecules. Surface Enhanced Laser Desorption Ionization-Time of Flight was employed to evaluate the proteomic profile of ultrafiltrate and Electrospray Ionization-Quadruple-ToF coupled with on-chip elution was used for proteins identification. A high and specific permeability for middle-high molecular weight molecules was revealed by mass spectrometry for the investigated membrane. The identified proteins are mostly uremic toxins: their relative abundance, estimated in the ultrafiltrate by exponentially modified protein abundance index, showed a high purification efficiency of the new membrane when compared with conventional ones. In conclusion, Synclear 0.2, used as convective membrane in hemodiafiltration with endogenous reinfusion treatment, permits to break the 'albumin wall', clearing middle-high molecular weight uremic toxins, improving the dialytic treatment purification efficiency., (© The Author(s) 2014 Reprints and permissions: sagepub.co.uk/journalsPermissions.nav.)

The use of plasmapheresis in neurological diseases with immune-mediated pathogenesis is widely certified. In recent years, the technological evolution of the dialysis membranes allowed to accompany the classical plasma exchange (PEX) treatment of apheresis by means of selective adsorption (IA). It has proved to be of equal therapeutic efficacy and, at the same time, devoid of most of the PEX side effects. The recent guidelines of the American Society for Apheresis (ASFA) and, later, the American Academy of Neurology, outlined directions and diagrams for the application of the method that has found wide use in many neurological diseases on the basis of auto-antibodies; in particular in Myasthenia Gravis, Guillain-Barre Syndrome, Multiple Sclerosis and Chronic Demyelinating Polyradiculoneuropathy. We add our experience in the treatment of 13 patients suffering from Myasthenia Gravis, treated over a four years period with filters containing tryptophan immunoadsorption in polyvinyl alcohol gel. The results confirm the achievement of a rapid regression of clinical symptoms, together with the rapid fall in the levels of antibody against acetylcholine-receptor. Therefore, the method of AI is to be considered of equal therapeutic efficacy of PEX, providing greater security in its use.

In end-stage renal disease patients, extracorporeal dialytic therapy is not able to prevent the accumulation of toxins related to the uremic syndrome, a severe complication that increases morbidity and mortality rate. In this paper, hemoFiltration with on-line Reinfusion (HFR) architecture is used to evaluate the effect of a more permeable membrane on the extraction of medium-high molecular weight molecules. The aim of this study was to compare two polysulphone membranes for convective chamber: polyphenylene High Flux (pHF) and polyphenylene Super High-Flux (pSHF). Fourteen patients were subjected to HFR with pHF and pSHF membranes and ultra filtrate (UF) samples were collected to evaluate molecular weight cut-off (MWCO) and to identify extracted proteins. Furthermore, image analysis software was used in order to evaluate change in protein extraction during the dialysis. The quantification of four proteins by immunoassay demonstrates a higher permeability of pSHF membrane. Two-dimensional electrophoresis (2-DE) gels showed, for both membranes, the greater number of protein spots at 235 min. Some of the identified proteins, involved in nephropathic disease complications, were compared to assess differences in extraction during dialytic treatment by PDQuest analysis. UF proteomic analysis demonstrated a different behavior for the two membranes; pHF membrane was more permeable at the beginning of HFR treatment (15 min), while pSHF membrane at the end of treatment (235 min). Proteomic analysis is a suitable approach to investigate the behavior of different membranes during dialysis. Results indicated that pSHF membrane offers the higher permeability, and showed higher efficiency in removal of middle molecules related to uremic syndrome.

Extracorporeal techniques for the removal of plasma lipids, known as LDL-apheresis, have improved treatment of atherosclerotic lesions in patients with familial hyperlipidemia (FH). In the homozygous form, such treatment is to be considered a life-saving therapy, and in heterozygous forms, which are widely distributed in the population, it is also used when there is a high risk of coronary atherogenic lesions and where a dietary and pharmacological approach has failed to satisfy the objective of a LDL-C 2.6 mmol/L. Of the various techniques available, we believe that cascade filtration (CF) and extracorporeal LDL precipitation with heparin (HELP) are the methods of choice for technical reasons, clinical efficacy and safety. HELP provides, at long-term follow-up, a 5% greater decrease in LDL-C and Lp (a) compared to CF, and about 10% increase in fibrinogen removal resulting in decreased blood viscosity. Conversely, CF produces a concomitant elimination of up to 20% of HDL-C, whereas HELP results in around 5% elimination. CF determines a loss of protein which over time can impact negatively on the protein profile, while HELP results in negligible protein loss. Finally, a significant dampening effect on the intermediate products of inflammation, which initiate the process of vessel atheroma development, has been documented only with HELP. Therefore, the HELP procedure appears to inhibit the development of atheromatous plaques via several different routes.

Restless legs syndrome (RLS) is a sensorimotor disorder characterized by a strong urge to move the legs associated with paresthesias, motor restlessness, worsening of symptoms at night, and at least partial relief by activity. RLS has a negative impact on sleep, may cause depressive and anxious states, result in poor quality of life, and be a risk factor for cardiovascular disease. RLS is frequent in patients with end-stage renal disease; in this patient population it is consistently associated with severe comorbidities. It remains an underdiagnosed clinical condition. Appropriate diagnosis and management of RLS and sleep disorders is necessary to improve the quality of life and survival of kidney patients.

Background: Pruritus is common in dialysis patients, but no studies have addressed its impact on the patients' quality of life (QoL)., Objective: We sought to measure the impact of pruritus on the QoL of patients undergoing chronic hemodialysis (HHD) or peritoneal dialysis (PPD)., Methods: Pruritus intensity was measured on a 10-point visual analog scale. QoL was investigated with the 36-item Short Form of the Medical Outcomes Study questionnaire (SSF-336), the 12-item General Health Questionnaire (GHQ-12) and a dermatological questionnaire (Skindex-29)., Results: One hundred and thirty-nine patients on HD and 30 on PD were recruited. Pruritus was found in 88/169 patients (52.1%),with no differences between HD and PD patients. Prevalence of poor sleep in patients with pruritus was higher than in those without (559% vs. 11%; p<0.001). Both physical and mental scores of SF-36 did not correlate with the presence and the intensity of pruritus. Pruritus intensity was significantly related to poor scores in all 3 subscales of Skindex-29 (symptoms, social function and emotions). In the subscales of social function and emotions, worse scores were observed in patients undergoing HD and with minor psychiatric disorders (GHQpos)., Conclusions: Pruritus had a high level of impact on all aspects of QoL and was a predictor of poor sleep. Type of dialysis and minor psychiatric disorders affect the emotional and social aspects of QoL.

When elderly patients with end-stage renal disease start dialysis their quality of life, and particularly the emotional aspects of it, are very similar to those of age-matched controls. However, as the treatment becomes chronic the quality of life will decline not only with regard to the physical aspects (due to comorbidities) but also the emotional aspects. Dialysis-related stress episodes and the peculiar interrelationships in the dialysis facility setting may cause psychological discomfort which on the one hand reduces the patient's quality of life and on the other may unfavorably impact on the family and the health-care personnel. An integrated psychological approach involving the patient from the beginning of dialysis throughout the treatment process as well as the healthcare personnel and the family can reduce the patient's psychological discomfort, thereby improving quality of life.

Background: In frail elderly patients, the chronic use of renal replacement therapy sometimes affords no tangible benefits and may even negatively affect their quality of life (Qol), making prolonged conservative management a reasonable option., Methods: This observational, uncontrolled study was conducted on 11 end-stage renal disease patients over 75 years of age, on prolonged conservative treatment with a follow-up of at least 6 months, to assess compliance with the Italian clinical guidelines concerning the treatment of renal failure, comorbidities, hospital stays, and several psychometric and Qol indicators in the patients and their caregivers., Results: We found a substantial compliance with the targets recommended in the guidelines, a moderate tendency for disease progression and satisfactory psychometric and Qol parameters, which proved much the same as those observed in a parallel (uncontrolled) group of patients on haemodialysis., Conclusions: Our study shows that a conservative strategy is feasible for frail uraemic patients, achieving acceptable clinical results and a Qol comparable with patients on haemodialysis. The study also provides indications on how to plan trials on this topic, to obtain the evidence needed to guide the difficult choice of whether to recommend dialysis or conservative treatment for such frail patients.

Nephrogenic systemic fibrosis (NSF) is a new, rare, and severe disease occurring in patients with renal failure who have been exposed to gadolinium. The pathogenesis of NSF is not completely known. In fact, the first warning about a significant relationship between NSF and gadolinium (a contrast medium used in magnetic resonance imaging) was only issued in 2006. No cases of NSF have been reported in Italy to date. A nationwide investigation should therefore be carried out to assess the real prevalence of NSF within the Italian uremic population. Furthermore, we need guidelines to reduce the risk of NSF in renal patients undergoing MRI with contrast medium.

This article reports a catheter-related outbreak of bacteraemia involving 38 patients in two haemodialysis units in Verona. Burkholderia cepacia complex strains were isolated from human blood and from an individually wrapped disinfection napkin that was contained in a commercially available, sterile dressing kit used to handle central venous catheters. Micro-organisms isolated from blood cultures and from the napkin were identified by standard procedures and confirmed as B. cenocepacia (genomovar III) by molecular analysis. Using pulsed-field gel electrophoresis analysis, the clinical isolates were indistinguishable or closely related to the B. cenocepacia isolated from the napkin. In conclusion, this study found that a contaminated commercial napkin soaked in quaternary ammonium, even when quality certified, was the source of infection.

Chronic dialysis treatment is characterized by a series of complex interdependent objective problems, such as the dialysis experience, the individual way to assess it, and some "protective" factors such as social and family support. Progresses in dialysis research show that dialysis patients have important alternatives to passively accept their condition: thanks to adequate psychological and relational aid, they can reach rather advanced adaptation levels, which allow them to modify both their behaviour and way of life, to keep a satisfactory compliance, and to improve their quality of life (QoL). In this adaptation process, both family and social support play an important role, although controversy still exists on it. The results of our study confirm the complexity of this role and show that either haemodialysis or peritoneal dialysis patients' adaptation process and QoL may be directly related to the extent of family member's ("caregiver") support. It is of particular interest the fact that patients, especially those undergoing haemodialysis, provided with a caregiver's assistance but who choose to "act by themselves", do have better adaptation levels and QoL than those who rely only on their caregiver. This fact reassesses the widely accepted point of view that continuous caregiver's support is always a positive and necessary factor in order to improve both the adaptation and the QoL of dialysis patients.

Background: Extramedullary plasma cell dyscrasias are rare., Case Report: We report a case of a 56-year-old male Caucasian hemodialysis patient with cutaneous plasmacytoma. The diagnosis was made a few months after surgical removal of his renal graft due to chronic rejection. Investigations for the presence of an associated myeloma were negative. He underwent local radiotherapy with complete resolution of the skin lesion., Conclusions: Nephrologists should be aware that the frequency of post-transplant lymphoproliferative disorders is increasing in the dialysis population, especially in those previously or currently treated with immunosuppressive drugs.

Background: Stenosis is the main cause of arteriovenous fistula (AVF) failure. It is unclear, however, if surveillance for stenosis enhances AVF function and longevity and if there is an ideal time for intervention., Methods: In a 5-year randomized, controlled, open trial we compared blood flow surveillance and pre-emptive repair of subclinical stenoses (one or both of angioplasty and open surgery) with standard monitoring and intervention based upon clinical criteria alone to determine if the former prolonged the longevity of mature forearm AVFs. Surveillance with blood pump flow (Qb) monitoring during dialysis sessions and quarterly shunt blood flow (Qa) or recirculation measurements identified 79 AVFs with angiographically proven, significant (>50%) stenosis. The AVFs were randomized to either a control group (intervention done in response to a decline in the delivered dialysis dose or thrombosis; n = 36) or to a pre-emptive treatment group (n = 43). To evaluate a possible relationship between outcome and haemodynamic status of the access, AVFs were divided into functional and failing subgroups, according to Qa values higher or lower than 350 ml/min or the absence or presence of recirculation., Results: A Kaplan-Meier analysis showed that pre-emptive treatment reduced failure rate (P = 0.003) and the Cox hazards model identified treatment (P = 0.009) and higher baseline Qa (P = 0.001) as the only variables associated with favourable outcome. Primary patency rates were higher in treatment than in control AVFs in both functional (P = 0.021) and failing subgroups (P = 0.005). They were also higher in functional than in failing AVFs in both control (P<0.001) and treatment groups (P = 0.023). Access survival was significantly higher in pre-emptively treated than in control AVFs (P = 0.050), a higher post-intervention Qa being the only variable associated with improved access longevity (P = 0.044). Secondary patency rates were similar in pre-emptively treated and control AVFs in both functional (P = 0.059) and failing subgroups (P = 0.394). They were also similar in functional and failing AVFs in controls (P = 0.082), but were higher in pre-emptively treated functional AVFs than in pre-emptively treated failing AVFs (P = 0.033) or in the entire control group (P = 0.019)., Conclusions: We provide evidence that active blood flow surveillance and pre-emptive repair of subclinical stenosis reduce the thrombosis rate and prolong the functional life of mature forearm AVFs. We also show that Qa is a crucial indicator of access patency and a Qa >350 ml/min portends a superior outcome with pre-emptive action in AVFs.

Background: Red cell Cartwright antigen (Yta) is very common in the general population therefore patients without red cell Cartwright antigen and with anti-Yta alloantibodies due to previous exposure to the antigen are rare. Report about clinical significance of Yta red cell alloantibodies in hemodialysis (HD) patients are scarce., Case Report: We report a cirrhotic uremic patient with anti-Yta antibodies who received Yta positive red cells. No adverse reactions nor hemolysis were detected., Conclusions: We concluded that dialysis patients with anti-Yta antibodies could be safely transfused with blood from Cartwright positive donors.

Background: Cardiovascular risk factors are common findings in uraemics, but the impact of each single factor on the development of atherosclerosis is still a matter of debate., Patients and Methods: In order to evaluate the relationship between diabetes and ischaemic heart disease (IHD) in uraemia, we carried out a retrospective study comparing the results of 33 coronary angiographies performed in non-diabetic patients with those of 13 diabetics (2 had type 1 diabetes, 8 were treated with insulin, 2 with sulfonylureas and 3 received no therapy). Coronary angiography was performed in 29 patients awaiting kidney transplantation and in 17 subjects with IHD., Results: Age, sex, length of time on renal replacement therapy, smoking history, clinical diagnosis of cerebrovascular and peripheral vascular disease, systolic blood pressure (BP), cholesterol, triglycerides, calcium, phosphate, albumin and degree of anaemia were comparable in the two groups. On the contrary, frequency of IHD (77 vs. 30%, p<0.01) and atrial fibrillation (23 vs. 3%, p<0.05) were higher, while diastolic BP (79 +/- 7 vs. 85 +/- 8 mmHg, p<0.05) and calcium phosphate product (47 +/- 10 vs. 57 +/- 15 mg2/dL2, p<0.05) were lower in diabetics than in non-diabetics. Stenotic lesions of the three major coronary arteries were more prevalent in diabetics than in non-diabetics (left anterior descending artery (LAD) 100 vs. 48%, p<0.01; right coronary artery (RCA) 77 vs. 39%, p<0.05; left circumflex artery (LCA) 69 vs. 24%, p<0.01) and in the same way diabetics showed higher narrowing percentage (LAD 74 +/- 30 vs. 30 +/- 36%, p<0.01; RCA 71 +/- 41 vs. 26 +/- 38, p<0.01; LCA 41 +/- 38 vs. 15 +/- 29, p<0.05)., Conclusions: Our study demonstrates that although the uraemic milieu is a risk factor for IHD, diabetes increases the degree of atherosclerotic vascular damage independently of the other cardiovascular risk factors.

Balloon angioplasty (PTA) is an established treatment modality for stenosis in dysfunctional arteriovenous fistulae (AVF), although most studies showing efficacy have been retrospective, uncontrolled, and nonrandomized. In addition, it is unknown whether correction of stenosis not associated with significant hemodynamic, functional, and clinical abnormality may improve survival in AVF. This study was a prospective controlled open trial to evaluate whether prophylactic PTA of stenosis not associated with access dysfunction improves survival in native, virgin, radiocephalic forearm AVF. Sixty-two stenotic, functioning AVF, i.e., able to provide adequate dialysis, were enrolled in the study: 30 were allocated to control and 32 to PTA. End points of the study were either AVF thrombosis or surgical revision due to reduction in delivered dialysis dose. Kaplan-Meier analysis showed that PTA improved AVF functional failure-free survival rates (P = 0.012) with a fourfold increase in median survival and a 2.87-fold decrease in risk of failure. Cox proportional hazard model identified PTA as the only variable associated with outcome (P = 0.012). PTA induced an increase in access blood flow rate (Qa) by 323 (236 to 445) ml/min (P < 0.001), suggesting that improved AVF survival is the result of increased Qa. PTA was also associated with a significant decrease in access-related morbidity by approximately halving the risk of hospitalization, central venous catheterization, and thrombectomy (P < 0.05). This study shows that prophylactic PTA of stenosis in functioning forearm AVF improves access survival and decreases access-related morbidity, supporting the usefulness of preventive correction of stenosis before the development of access dysfunction. It also strongly supports surveillance program for early detection of stenosis.

Prevalence of cardiovascular disease is high in diabetic patients on renal replacement therapy (RRT); therefore we examined the role of diabetes mellitus on determining the degree of coronary artery stenosis. Twenty-five patients underwent coronary angiography, 12 were awaiting kidney transplantation and the examination was performed regardless of cardiac symptoms, 13 were affected by ischaemic heart disease (IHD). Diabetic and nondiabetic status together with the other risk factors for cardiovascular disease such as age, sex, length of time on RRT, smoking and elevated phosphorus levels history, clinical diagnosis of IHD, cerebrovascular and peripheral vascular disease, mean blood pressure, cholesterol, triglycerides, calcium, phosphate, albumin, haemoglobin, haematocrit and weekly dose of erythropoietin were derived from clinical records. All investigated parameters were matched in diabetic (group 1, n=10) and nondiabetic patients (group 2, n=15) and showed no differences. Clinical evidence of IHD was detected in 80% of patients in group 1 and 46% in group 2 and the percentage of patients on the renal transplant waiting list was not statistically different in the two groups (30 vs 60%). In 60% of patients in group 1 there were 3 or more stenotic lesions equal or greater than 75% of normal reference segment in the major coronary arteries, whilst in 53% in group 2 there were no haemodynamically significant narrowings. Narrowing percentage of the coronaries in group 1 and 2 were: right coronary artery 83 +/- 30 vs 32 +/- 41 (p<0.05), left anterior descending artery 80 +/- 25 vs 44 +/- 34 (p<0.05), left circumflex artery 46 +/- 37 vs 18 +/- 29 (p=0.05) respectively. Our study confirms that IHD is a clinical feature of uraemic diabetic patients and that diabetes is the main cardiovascular risk factor for determining the degree of coronary stenosis.

Mesenteric infarction is increasingly observed in uremic elderly patients with widespread atherosclerosis. A 77-year-old man on renal replacement therapy since June 1997 was admitted because of abdominal pain. The surgical diagnosis was massive intestinal infarction and the patient died a few hours later. A colonoscopy had been performed a few weeks before and a well-limited necrosis of the caecum mucosa had been detected. Hypotensive episodes were frequent during his hemodialysis sessions. In this work we discuss age, symptoms, laboratory investigations, risk factors and the evolution of case reports published during the last few years. Nephrologists should take into account the possibility of mesenteric ischemia in uremic patients with manifest arterio-occlusive disease, abdominal pain and leukocytosis, especially if hypotension is the major complication of the hemodialysis sessions.

Background: Cardiovascular disease is the leading cause of morbidity and mortality in uraemia. Coronary angiography (CA) in patients awaiting kidney transplantation (PAKT) is still a matter of debate. In order to evaluate atherosclerotic coronary damage in PAKT, CAs of 12 PAKT were matched with those of 13 dialysis patients (P) affected by ischaemic heart disease IHD., Methods: Age sex, length of time on renal replacement therapy, diabetes, smoking and hyperphosphataemia history, clinical diagnosis of IHD, cerebrovascular (CV) and peripheral vascular (PV) disease, mean blood pressure (BP), cholesterol, triglycerides, calcium, phosphate, albumin, haemoglobin, haematocrit and weekly dose of erythropoietin (EPO-dose) were derived from clinical records., Results: PAKT were younger (48 9 vs 63 9 years, p < 0.01) and had higher diastolic BP values (86+/-10 vs 79+/-4 mmHg, p < 0.05) than IHD P. On the contrary all the other parameters investigated were not different in the two groups of P. Prevalence of IHD in PAKT was 16% while frequency of CV and VP disease were not different in the two groups. In 9 of IHD P stenotic lesions >/=75% of normal reference segment were diagnosed in 3 or more vessels whilst in PAKT there were atherosclerotic lesions in right coronary artery, left anterior descending artery and left circumflex artery in 41, 66 and 33% respectively. Narrowing percentage of the coronaries in PAKT and IHD P were: right coronary artery 27+/-42 vs 75+/-35, p < 0.05, left anterior descending artery 29+/-25 vs 86+/-15, p < 0.001, left circumflex artery 11 16 vs 47+/-38, p < 0.05 respectively., Conclusions: Our study shows that atherosclerotic coronary damage is present in PAKT and, although not hemodynamically significant, it could be an important risk factor for clinical expression of IHD. We conclude that CA should be performed in PAKT especially in those over 45 years.

Disorders of lipid metabolism could play an important role in mediating the progression of chronic renal disease toward uremia. The hypothesis of the nephrotoxicity of lipids has been considered in a large population of patients on long-term dietary protein restriction. In our experience, there is no evidence that lipid disorders may accelerate the progression of renal disease. Hypercholesterolemia and/or hypertriglyceridemia are probably only some of the many factors affecting the prognosis of renal disease. Dietary protein restriction seems to be effective in maintaining normal or only slightly elevated serum lipids in patients with early renal failure, even after years of dietary treatment, despite the natural progression of renal functional deterioration. Moreover, this dietary regimen has a favorable effect on lipid composition of erythrocyte membrane when compared with those of patients on a free diet.

Disorders of lipid metabolism during chronic renal failure (CRF) play a crucial role in the pathogenesis of early cardiovascular complication of this syndrome. In addition, some experimental evidence suggests that hyperlipidemia may accelerate progression of renal disease. We have studied 65 patients with CRF (S-creatinine 1.5-9.0 mg/dl), 52.3% of whom were hypertensive. Patients were divided in 2 groups matched for age, sex and degree of renal failure: group 1 was kept for 36 +/- 8 months on a free diet; group 2 was kept for 39 +/- 6 months on a low-protein diet with an elevated polyunsaturated/saturated fatty acid (PUFA/SFA) ratio. We found significantly higher levels of triglycerides (TG) and lower levels of esterified cholesterol in high density lipoprotein (HDL-C) in group 1 than in group 2. Patients on the diet had a lower percentage of membrane SFA and a higher percentage of PUFA than patients on free diet. Only in group 1 a direct correlation between cholesterol/phospholipid (Chol/P) ratio and age was observed; in group 2, a negative correlation between levels of PUFA and TG and between linoleic/oleic (Lin/Ol) ratio and serum Chol was shown. S-creatinine levels were directly correlated with Chol/P ratio in group 1 and indirectly with Lin/Ol ratio and PUFA in group 2. These data show that a low-protein diet, containing an elevated PUFA/SFA ratio, is able to counteract lipid abnormalities in patients with CRF and the normalization of this pattern is associated with significant improvement of membrane lipid composition and, presumably, of "functional" activity of cell membranes with a better control of supposed "renal lipoprotein toxicity".

Lowering blood pressure is not totally effective in preventing the atherosclerotic complications of systemic hypertension. In hypertensive patients both platelet hyperaggregation and dyslipidemia have been suggested as important risk factors. The effect of 8 weeks' treatment with ketanserin on blood pressure, serum lipid parameters (cholesterol, triglycerides, LDL, HDL-C, apolipoprotein A1 and B) and platelet aggregation, induced by collagen, ADP, arachidonic acid, was evaluated in 10 patients with essential hypertension. Ketanserin was effective in lowering blood pressure in all patients, 6 of whom became normotensive. Both CHOL and TG levels and APO B were significantly reduced, whereas HDL-C and APO A1 were significantly increased after treatment. These results might be attributed to the antagonistic activity of ketanserin on alpha-1 adrenoceptors with a consequent inhibition of phosphodiesterase. Platelet aggregation, after stimulation with collagen and arachidonic acid, was significantly reduced secondary to the inhibition of intraplatelet serotonin synthesis and release. These results suggest that keranserin is effective in reducing blood pressure and in achieving normal serum lipid pattern and platelet aggregation. Therefore, this drug might be helpful in controlling the main risk factors for cardiovascular damage.

Ten patients with essential hypertension and normal renal function were treated with ketanserin (20-40 mg twice a day), administered for 8 weeks. In all patients, the changes in systemic and renal hemodynamics, and in urine albumin excretion, were assessed. Ketanserin monotherapy effectively lowered blood pressure in all patients. No change in cardiac output, pulse rate and stroke volume was observed; peripheral vascular resistance was significantly decreased. Plasma volume was unaltered. Renal plasma flow, glomerular filtration rate and filtration fraction were stable, with a slight but not significant reduction in renal vascular resistance. Urine albumin excretion remained unchanged. No relevant side effects were observed during the treatment period. In conclusion, our results confirm that ketanserin alone is an effective antihypertensive agent in patients with uncomplicated essential hypertension. The blood pressure lowering effect is mainly due to the systemic vasodilatation; renal hemodynamics and function are well preserved.

32 polycystic kidney disease (PKD) patients, 16 with normal 16 with variably decreased renal function, were studied; 12 were normotensive, 20 were hypertensive. Mean arterial pressure (MAP) was 90 +/- 8 mm Hg in the normotensive group and 117 +/- 17 in hypertensive patients; plasma renin activity (PRA) was similar. The glomerular filtration rate (GFR) was lower, but not significantly, in the hypertensive group and plasma volume (PV) was higher in hypertensive patients (normotensive 40.25 +/- 3.47 ml/kg body weight; hypertensive 46.30 +/- 3.54). No correlation was found between MAP, and PRA or GFR but MAP correlated with PV. Cardiac output was higher in hypertensive patients (normotensive 3.48 +/- 0.70 l/min/m2; hypertensive 3.89 +/- 1.47), also total peripheral resistance was higher in the hypertensive group (normotensive 2,035 +/- 503 dyn/s/cm-5/m2; hypertensive 2,577 +/- 808). Cardiac output and PV showed a high degree of correlation, but no correlation was seen between total peripheral resistance and PV, or PRA. The hypertensive patients were divided into two groups: one with hypertension of less than 2 years duration and one with more than 2 years but with similar GFR, PRA, PV and hemodynamic pattern. Our data indicate that hypertension in PKD is volume-dependent; that the increase in PV was not related to the loss of GFR, and that the role of the renin-angiotensin system in maintaining the hypertensive state is not well defined. Hemodynamically hypertension is characterized by high cardiac output and total peripheral resistance independent of the duration of hypertension.