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1.
medrxiv; 2023.
Preprint in English | medRxiv | ID: ppzbmed-10.1101.2023.10.23.23297388

ABSTRACT

ABSTRACT "Purpose/ Introduction: Recent Evidences reveal that COVID-19 pandemic caused MCH services interruption world-wide. In Timor-Leste, MCH services is one of service priorities and delivers through 3 tiers of health structures consists of hospitals, CHCs, and HPs. The Country (Timor-Leste) identified its first case of COVID-19 in March and by April 2020, it was lockdown and stringent actions were enforced. Nuring the pandemic COVID-19, the MOH health structures and facilities continued delivers essential health services. However, the strict lockdown and mandatory stay home order had negatively impacted the health system capacities. This study to thoroughly assess the disruption of System Components of MCH Services by interviewed frontline HCWs from Comoro -CHC, in Dili-Timor-Leste. Patients and Methods: The cross-sectional approach with quantitative descriptive method was employed for this study. We employed a modified who six building blocks (service delivery, human resources, drugs and consumables, ICT, Financing, Stewardship) to assess system disruption of MCH services in Comoro CHC due to COVID-19 Pandemic. Sample of 99 participants consisted of medical doctors, midwives, nurses who work at MCH unit pharmacy technicians, unit laboratory technicians, a structured questionnaire was utilized and data analysis was used SPSS. Result: The findings reveal the disruption of all 6 system blocks from MCH services in Comoro-CHC, Dili, Timor-Leste due to COVID-19 Pandemic. Except leadership, statistical tests reveal statistically significant association between interruption of five blocks from MCH services. The service delivery, human resources, drugs and consumables, ICT, Financing, Stewardship. Conclusion: COVID-19 Pandemic Caused disruption of all six health system blocks of MCH Services in Comoro, CHC. For future pandemic preparation plan, the attention must be given to all six-health system blocks to guarantee continue delivery of MCH care in CHC Comoro, Dili, Timor-Leste and a primary health care facility and other similar settings.Keywords: Performance, Maternal, Child, Health, System, COVID-19"


Subject(s)
COVID-19 , Hepatitis C, Chronic
2.
J Viral Hepat ; 30(6): 551-558, 2023 06.
Article in English | MEDLINE | ID: covidwho-2325032

ABSTRACT

In July 2020, the Mexican Government initiated the National Program for Elimination of Hepatitis C (HCV) under a procurement agreement, securing universal, free access to HCV screening, diagnosis and treatment for 2020-2022. This analysis quantifies the clinical and economic burden of HCV (MXN) under a continuation (or end) to the agreement. A modelling and Delphi approach was used to evaluate the disease burden (2020-2030) and economic impact (2020-2035) of the Historical Base compared to Elimination, assuming the agreement continues (Elimination-Agreement to 2035) or terminates (Elimination-Agreement to 2022). We estimated cumulative costs and the per-patient treatment expenditure needed to achieve net-zero cost (the difference in cumulative costs between the scenario and the base). Elimination is defined as a 90% reduction in new infections, 90% diagnosis coverage, 80% treatment coverage and 65% reduction in mortality by 2030. A viraemic prevalence of 0.55% (0.50-0.60) was estimated on 1st January 2021, corresponding to 745,000 (95% CI 677,000-812,000) viraemic infections in Mexico. The Elimination-Agreement to 2035 would achieve net-zero cost by 2023 and accrue 31.2 billion in cumulative costs. Cumulative costs under the Elimination-Agreement to 2022 are estimated at 74.2 billion. Under Elimination-Agreement to 2022, the per-patient treatment price must decrease to 11,000 to achieve net-zero cost by 2035. The Mexican Government could extend the agreement through 2035 or reduce the cost of HCV treatment to 11,000 to achieve HCV elimination at net-zero cost.


Subject(s)
Hepatitis C, Chronic , Hepatitis C , Humans , Hepatitis C, Chronic/diagnosis , Hepatitis C, Chronic/epidemiology , Hepatitis C, Chronic/prevention & control , Cost-Benefit Analysis , Mexico/epidemiology , Health Care Costs , Hepatitis C/diagnosis , Hepatitis C/epidemiology , Hepatitis C/prevention & control , Hepacivirus , Antiviral Agents/therapeutic use
3.
J Microbiol Immunol Infect ; 56(3): 586-597, 2023 Jun.
Article in English | MEDLINE | ID: covidwho-2321047

ABSTRACT

OBJECTIVES: Gaps in linkage-to-care remain the barriers toward hepatitis C virus (HCV) elimination in the directly-acting-antivirals (DAA) era, especially during SARS Co-V2 pandemics. We established an outreach project to target HCV micro-elimination in HCV-hyperendemic villages. METHODS: The COMPACT provided "door-by-door" screening by an "outreach HCV-checkpoint team" and an "outreach HCV-care team" for HCV diagnosis, assessment and DAA therapy in Chidong/Chikan villages between 2019 and 2021. Participants from neighboring villages served as Control group. RESULTS: A total of 5731 adult residents participated in the project. Anti-HCV prevalence rate was 24.0% (886/3684) in Target Group and 9.5% (194/2047) in Control group (P < 0.001). The HCV-viremic rates among anti-HCV-positive subjects were 42.7% and 41.2%, respectively, in Target and Control groups. After COMPACT engagement, 80.4% (304/378) HCV-viremic subjects in the Target group were successfully linked-to-care, and Control group (70% (56/80), P = 0.039). The rates of link-to-treatment and SVR12 were comparable between Target (100% and 97.4%, respectively) and Control (100% and 96.4%) groups. The community effectiveness was 76.4% in the COMPACT campaign, significantly higher in Target group than in Control group (78.3% versus 67.5%, P = 0.039). The community effectiveness decreased significantly during SARS Co-V2 pandemic in Control group (from 81% to 31.8%, P < 0.001), but not in Target group (80.3% vs. 71.6%, P = 0.104). CONCLUSIONS: The outreach door-by-door screen strategy with decentralized onsite treatment programs greatly improved HCV care cascade in HCV-hyperendemic areas, a model for HCV elimination in high-risk marginalized communities in SARS Co-V2 pandemic.


Subject(s)
Hepatitis C, Chronic , Hepatitis C , Severe Acute Respiratory Syndrome , Adult , Humans , Hepacivirus , Antiviral Agents/therapeutic use , Pandemics/prevention & control , Hepatitis C, Chronic/drug therapy , Severe Acute Respiratory Syndrome/epidemiology , Hepatitis C/drug therapy , Hepatitis C/epidemiology , Hepatitis C/prevention & control
4.
J Formos Med Assoc ; 122(3): 202-220, 2023 Mar.
Article in English | MEDLINE | ID: covidwho-2320727

ABSTRACT

Diabetes mellitus (DM) and hepatitis C virus (HCV) infection are prevalent diseases globally and emerging evidence demonstrates the bidirectional association between the two diseases. Direct-acting antivirals (DAAs) for HCV have a high treatment success rate and can significantly reduce the risks of short and long-term complications of HCV infection. However, despite the evidence of the association between diabetes and HCV and the benefits of anti-HCV treatment, previously published guidelines did not focus on the universal HCV screening for patients with diabetes and their subsequent management once confirmed as having HCV viremia. Nonetheless, screening for HCV among patients with diabetes will contribute to the eradication of HCV infection. Thus, the three major Taiwan medical associations of diabetes and liver diseases endorsed a total of 14 experts in the fields of gastroenterology, hepatology, diabetology, and epidemiology to convene and formulate a consensus statement on HCV screening and management among patients with diabetes. Based on recent studies and guidelines as well as from real-world clinical experiences, the Taiwan experts reached a consensus that provides a straightforward approach to HCV screening, treatment, and monitoring of patients with diabetes.


Subject(s)
Diabetes Mellitus , Hepatitis C, Chronic , Hepatitis C , Humans , Antiviral Agents/therapeutic use , Hepacivirus , Hepatitis C, Chronic/drug therapy , Hepatitis C/drug therapy , Diabetes Mellitus/drug therapy
5.
Int J Mol Sci ; 23(22)2022 Nov 15.
Article in English | MEDLINE | ID: covidwho-2313926

ABSTRACT

Hepatocellular carcinoma (HCC) remains one of the most common malignancies and the third cause of cancer-related death worldwide, with surgery being the best prognostic tool. Among the well-known causative factors of HCC are chronic liver virus infections, chronic virus hepatitis B (HBV) and chronic hepatitis virus C (HCV), aflatoxins, tobacco consumption, and non-alcoholic liver disease (NAFLD). There is a need for the development of efficient molecular markers and alternative therapeutic targets of great significance. In this review, we describe the general characteristics of HCC and present a variety of targeted therapies that resulted in progress in HCC therapy.


Subject(s)
Carcinoma, Hepatocellular , Hepatitis B, Chronic , Hepatitis C, Chronic , Liver Neoplasms , Humans , Carcinoma, Hepatocellular/drug therapy , Carcinoma, Hepatocellular/etiology , Liver Neoplasms/pathology , Hepatitis B, Chronic/complications , Hepacivirus , Hepatitis C, Chronic/complications
6.
biorxiv; 2023.
Preprint in English | bioRxiv | ID: ppzbmed-10.1101.2023.05.13.540576

ABSTRACT

SARS-CoV-2 S protein-mediated fusion is thought to involve the interaction of the membrane-distal, or N-terminal heptad repeat (NHR) (termed HR1) of the cleaved S2 segment of the protein, and the membrane-proximal, or C-terminal heptad repeat (CHR) (termed HR2) regions of the protein. Following the observations of Xia et al (Xia S, Liu M, Wang C, Xu W, Lan Q, Feng S, Qi F, Bao L, Du L, Liu S, Qin C, Sun F, Shi Z, Zhu Y, Jiang S, Lu L. Cell Res. 2020b Apr;30(4):343-355), we examined the fusion inhibitory activity of a PEGylated HR2-derived peptide and its palmitoylated derivative, using a pseudovirus infection assay. The latter peptide caused a 76% reduction in fusion activity at 10 M. Our results suggest that small variations in peptide derivatization and differences in the membrane composition of pseudovirus preparations may affect the inhibitory potency of HR2-derived peptides.


Subject(s)
Hepatitis C, Chronic
7.
Viruses ; 15(4)2023 03 24.
Article in English | MEDLINE | ID: covidwho-2304497

ABSTRACT

Community-based screening for the hepatitis C virus (HCV) decreased during the COVID-19 pandemic. We developed a collaborative referral model between a primary clinic (Liouguei District Public Health Center, LDPHC) and a tertiary referral center to increase HCV screening and treatment uptake in a mountainous region of Taiwan. Once-in-a-lifetime hepatitis B and C screening services established by the Taiwan National Health Insurance were performed at LDPHC. Antibody-to-HCV (anti-HCV)-seropositive patients received scheduled referrals and took a shuttle bus to E-Da hospital for HCV RNA testing on their first visit. Direct-acting antiviral agents (DAAs) were prescribed for HCV-viremic patients on their second visit. From October 2020 to September 2022, of 3835 residents eligible for HCV screening in Liouguei District, 1879 (49%) received anti-HCV testing at LDPHC. The overall HCV screening coverage rate increased from 40% before referral to 69.4% after referral. Of the 79 anti-HCV-seropositive patients, 70 (88.6%) were successfully referred. Of the 38 HCV-viremic patients, 35 (92.1%) received DAA therapy, and 32 (91.4%) achieved sustained virological response. The collaborative referral model demonstrates a good model for HCV screening and access to care and treatment in a Taiwan mountainous region, even during the COVID-19 pandemic. Sustained referral is possible using this routine referral model.


Subject(s)
COVID-19 , Hepatitis C, Chronic , Hepatitis C , Humans , Antiviral Agents/therapeutic use , Hepatitis C, Chronic/diagnosis , Hepatitis C, Chronic/drug therapy , Hepatitis C, Chronic/epidemiology , Taiwan/epidemiology , Pandemics , COVID-19/diagnosis , COVID-19/epidemiology , Hepatitis C/diagnosis , Hepatitis C/drug therapy , Hepatitis C/epidemiology , Hepacivirus/genetics , Referral and Consultation
8.
Eur J Med Chem ; 254: 115376, 2023 Jun 05.
Article in English | MEDLINE | ID: covidwho-2293855

ABSTRACT

The high morbidity and mortality associated with SARS-CoV-2 infection, the etiological agent of COVID-19, has had a major impact on global public health. Significant progress has been made in the development of an array of vaccines and biologics, however, the emergence of SARS-CoV-2 variants and breakthrough infections are an ongoing major concern. Furthermore, there is an existing paucity of small-molecule host and virus-directed therapeutics and prophylactics that can be used to counter the spread of SARS-CoV-2, and any emerging and re-emerging coronaviruses. We describe herein our efforts to address this urgent need by focusing on the structure-guided design of potent broad-spectrum inhibitors of SARS-CoV-2 3C-like protease (3CLpro or Main protease), an enzyme essential for viral replication. The inhibitors exploit the directional effects associated with the presence of a gem-dimethyl group that allow the inhibitors to optimally interact with the S4 subsite of the enzyme. Several compounds were found to potently inhibit SARS-CoV-2 and MERS-CoV 3CL proteases in biochemical and cell-based assays. Specifically, the EC50 values of aldehyde 1c and its corresponding bisulfite adduct 1d against SARS-CoV-2 were found to be 12 and 10 nM, respectively, and their CC50 values were >50 µM. Furthermore, deuteration of these compounds yielded compounds 2c/2d with EC50 values 11 and 12 nM, respectively. Replacement of the aldehyde warhead with a nitrile (CN) or an α-ketoamide warhead or its corresponding bisulfite adduct yielded compounds 1g, 1eand1f with EC50 values 60, 50 and 70 nM, respectively. High-resolution cocrystal structures have identified the structural determinants associated with the binding of the inhibitors to the active site of the enzyme and, furthermore, have illuminated the mechanism of action of the inhibitors. Overall, the high Safety Index (SI) (SI=CC50/EC50) displayed by these compounds suggests that they are well-suited to conducting further preclinical studies.


Subject(s)
COVID-19 , Hepatitis C, Chronic , Middle East Respiratory Syndrome Coronavirus , Humans , SARS-CoV-2/metabolism , Antiviral Agents/pharmacology , Antiviral Agents/chemistry , Peptide Hydrolases , Protease Inhibitors/pharmacology , Protease Inhibitors/chemistry , Cysteine Endopeptidases/metabolism
9.
J Chem Inf Model ; 63(7): 2158-2169, 2023 04 10.
Article in English | MEDLINE | ID: covidwho-2260188

ABSTRACT

The rapid global spread of the SARS-CoV-2 virus facilitated the development of novel direct-acting antiviral agents (DAAs). The papain-like protease (PLpro) has been proposed as one of the major SARS-CoV-2 targets for DAAs due to its dual role in processing viral proteins and facilitating the host's immune suppression. This dual role makes identifying small molecules that can effectively neutralize SARS-CoV-2 PLpro activity a high-priority task. However, PLpro drug discovery faces a significant challenge due to the high mobility and induced-fit effects in the protease's active site. Herein, we virtually screened the ZINC20 database with Deep Docking (DD) to identify prospective noncovalent PLpro binders and combined ultra-large consensus docking with two pharmacophore (ph4)-filtering strategies. The analysis of active compounds revealed their somewhat-limited diversity, likely attributed to the induced-fit nature of PLpro's active site in the crystal structures, and therefore, the use of rigid docking protocols poses inherited limitations. The top hits were assessed against recombinant viral proteins and live viruses, demonstrating desirable inhibitory activities. The best compound VPC-300195 (IC50: 15 µM) ranks among the top noncovalent PLpro inhibitors discovered through in silico methodologies. In the search for novel SARS-CoV-2 PLpro-specific chemotypes, the identified inhibitors could serve as diverse templates for the development of effective noncovalent PLpro inhibitors.


Subject(s)
COVID-19 , Hepatitis C, Chronic , Humans , SARS-CoV-2 , Antiviral Agents/pharmacology , Antiviral Agents/chemistry , Models, Molecular , Prospective Studies , Protease Inhibitors/pharmacology , Protease Inhibitors/chemistry , Viral Proteins/chemistry , Peptide Hydrolases
10.
J Chem Inf Model ; 63(5): 1438-1453, 2023 03 13.
Article in English | MEDLINE | ID: covidwho-2264992

ABSTRACT

Direct-acting antivirals for the treatment of the COVID-19 pandemic caused by the SARS-CoV-2 virus are needed to complement vaccination efforts. Given the ongoing emergence of new variants, automated experimentation, and active learning based fast workflows for antiviral lead discovery remain critical to our ability to address the pandemic's evolution in a timely manner. While several such pipelines have been introduced to discover candidates with noncovalent interactions with the main protease (Mpro), here we developed a closed-loop artificial intelligence pipeline to design electrophilic warhead-based covalent candidates. This work introduces a deep learning-assisted automated computational workflow to introduce linkers and an electrophilic "warhead" to design covalent candidates and incorporates cutting-edge experimental techniques for validation. Using this process, promising candidates in the library were screened, and several potential hits were identified and tested experimentally using native mass spectrometry and fluorescence resonance energy transfer (FRET)-based screening assays. We identified four chloroacetamide-based covalent inhibitors of Mpro with micromolar affinities (KI of 5.27 µM) using our pipeline. Experimentally resolved binding modes for each compound were determined using room-temperature X-ray crystallography, which is consistent with the predicted poses. The induced conformational changes based on molecular dynamics simulations further suggest that the dynamics may be an important factor to further improve selectivity, thereby effectively lowering KI and reducing toxicity. These results demonstrate the utility of our modular and data-driven approach for potent and selective covalent inhibitor discovery and provide a platform to apply it to other emerging targets.


Subject(s)
COVID-19 , Hepatitis C, Chronic , Humans , SARS-CoV-2/metabolism , Antiviral Agents/pharmacology , Pandemics , Artificial Intelligence , Protease Inhibitors/pharmacology , Molecular Docking Simulation
11.
Nat Commun ; 14(1): 1733, 2023 03 28.
Article in English | MEDLINE | ID: covidwho-2279639

ABSTRACT

Direct-acting antivirals are needed to combat coronavirus disease 2019 (COVID-19), which is caused by severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2). The papain-like protease (PLpro) domain of Nsp3 from SARS-CoV-2 is essential for viral replication. In addition, PLpro dysregulates the host immune response by cleaving ubiquitin and interferon-stimulated gene 15 protein from host proteins. As a result, PLpro is a promising target for inhibition by small-molecule therapeutics. Here we design a series of covalent inhibitors by introducing a peptidomimetic linker and reactive electrophile onto analogs of the noncovalent PLpro inhibitor GRL0617. The most potent compound inhibits PLpro with kinact/KI = 9,600 M-1 s-1, achieves sub-µM EC50 values against three SARS-CoV-2 variants in mammalian cell lines, and does not inhibit a panel of human deubiquitinases (DUBs) at >30 µM concentrations of inhibitor. An X-ray co-crystal structure of the compound bound to PLpro validates our design strategy and establishes the molecular basis for covalent inhibition and selectivity against structurally similar human DUBs. These findings present an opportunity for further development of covalent PLpro inhibitors.


Subject(s)
COVID-19 , Hepatitis C, Chronic , Animals , Humans , Papain/metabolism , Peptide Hydrolases/metabolism , SARS-CoV-2/metabolism , Antiviral Agents/pharmacology , Antiviral Agents/chemistry , Protease Inhibitors , Mammals/metabolism
12.
Clin Chest Med ; 44(2): 279-297, 2023 06.
Article in English | MEDLINE | ID: covidwho-2277381

ABSTRACT

Direct acting antivirals and monoclonal antibodies reduce morbidity and mortality associated with severe acute respiratory syndrome coronavirus 2 infection. Persons at higher risk for disease progression and hospitalized patients with coronavirus disease-2019 (COVID-19) benefit most from available therapies. Following an emphasis on inpatient treatment of COVID-19 during the early pandemic, several therapeutic options were developed for outpatients with COVID-19. Additional clinical trials and real-world studies are needed to keep pace with the evolving pandemic.


Subject(s)
COVID-19 , Coronavirus , Hepatitis C, Chronic , Pneumonia , Humans , Antiviral Agents/therapeutic use
13.
Antimicrob Agents Chemother ; 67(4): e0170322, 2023 04 18.
Article in English | MEDLINE | ID: covidwho-2256542

ABSTRACT

Antiviral compounds targeting cellular metabolism are part of the therapeutic arsenal to control the spread of virus infection, either as sole treatment or in combination with direct-acting antivirals (DAA) or vaccines. Here, we describe the effect of two of them, lauryl gallate (LG) and valproic acid (VPA) both exhibiting a wide antiviral spectrum, against infection by coronaviruses such as HCoV-229E, HCoV-OC43, and SARS-CoV-2. A consistent 2 to 4-log-decrease in virus yields was observed in the presence of each antiviral, with an average IC50 value of 1.6 µM for LG and 7.2 mM for VPA. Similar levels of inhibition were observed when adding the drug 1 h before adsorption, at the time of infection or 2 h after infection, supporting a postvirus entry mechanism of action. The specificity of the antiviral effect of LG against SARS-CoV-2, relative to other related compounds such as gallic acid (G) and epicatechin gallate (ECG), predicted to be better inhibitors according to in silico studies, was also demonstrated. The combined addition of LG, VPA, and remdesivir (RDV), a DAA with a proven effect against human coronaviruses, resulted in a robust synergistic effect between LG and VPA, and to a lesser extent between the other drug combinations. These findings reinforce the interest of these wide antiviral spectrum host-targeted compounds as a first line of defense against viral diseases or as a vaccine complement to minimize the gap in antibody-mediated protection evoked by vaccines, either in the case of SARS-CoV-2 or for other possible emerging viruses.


Subject(s)
COVID-19 , Coronavirus 229E, Human , Coronavirus OC43, Human , Hepatitis C, Chronic , Humans , Antiviral Agents/pharmacology , SARS-CoV-2
14.
Emerg Microbes Infect ; 12(1): 2195020, 2023 Dec.
Article in English | MEDLINE | ID: covidwho-2255344

ABSTRACT

SARS-CoV-2, the causative virus of COVID-19, continues to threaten global public health. COVID-19 is a multi-organ disease, causing not only respiratory distress, but also extrapulmonary manifestations, including gastrointestinal symptoms with SARS-CoV-2 RNA shedding in stool long after respiratory clearance. Despite global vaccination and existing antiviral treatments, variants of concern are still emerging and circulating. Of note, new Omicron BA.5 sublineages both increasingly evade neutralizing antibodies and demonstrate an increased preference for entry via the endocytic entry route. Alternative to direct-acting antivirals, host-directed therapies interfere with host mechanisms hijacked by viruses, and enhance cell-mediated resistance with a reduced likelihood of drug resistance development. Here, we demonstrate that the autophagy-blocking therapeutic berbamine dihydrochloride robustly prevents SARS-CoV-2 acquisition by human intestinal epithelial cells via an autophagy-mediated BNIP3 mechanism. Strikingly, berbamine dihydrochloride exhibited pan-antiviral activity against Omicron subvariants BA.2 and BA.5 at nanomolar potency, providing a proof of concept for the potential for targeting autophagy machinery to thwart infection of current circulating SARS-CoV-2 subvariants. Furthermore, we show that autophagy-blocking therapies limited virus-induced damage to intestinal barrier function, affirming the therapeutic relevance of autophagy manipulation to avert the intestinal permeability associated with acute COVID-19 and post-COVID-19 syndrome. Our findings underscore that SARS-CoV-2 exploits host autophagy machinery for intestinal dissemination and indicate that repurposed autophagy-based antivirals represent a pertinent therapeutic option to boost protection and ameliorate disease pathogenesis against current and future SARS-CoV-2 variants of concern.


Subject(s)
COVID-19 , Hepatitis C, Chronic , Humans , SARS-CoV-2 , Antiviral Agents/pharmacology , Post-Acute COVID-19 Syndrome , RNA, Viral , Antibodies, Neutralizing , Autophagy , Antibodies, Viral , Spike Glycoprotein, Coronavirus , Membrane Proteins
15.
AIDS Rev ; 25(1): 1-13, 2023.
Article in English | MEDLINE | ID: covidwho-2282191

ABSTRACT

Coinfection with hepatitis viruses A to E is frequent in persons living with HIV (PLWH) and causes significant morbidity and mortality. Oro-fecal transmissible hepatitis A and E mostly produce acute self-limited episodes in poor income regions and in non-vaccinated travelers. In high-income countries, outbreaks of hepatitis A occur in men having sex with men (MSM) and chronic hepatitis E is occasionally reported among PLWH with severe immunodeficiency. Chronic hepatitis B, C, and D are frequent in PLWH in highly endemic regions and globally in persons who inject drugs (PWID) and MSM. Progression to liver cirrhosis and development of hepatocellular carcinoma (HCC) is major clinical complications in coinfected patients. Current estimates for PLWH are of 38 million worldwide. Roughly 12% have chronic viral hepatitis (5 million). Coinfection figures are of 5-10% for HBV (2-4 million), 4% for HCV (1.5 million), and 15% of HBsAg+ for HDV (0.5 million). Oral direct-acting antivirals (DAA) cure almost all treated patients with hepatitis C. However, given that there is no protective HCV immunity, PLWH with high-risk behaviors may experience HCV reinfection episodes. Tenofovir is the drug of choice in PLWH with chronic hepatitis B, given its dual effect on HIV and HBV. Lifelong oral tenofovir suppresses HBV replication and ameliorate liver damage. However, the risk of HCC persists even in the absence of cirrhosis. Finally, HDV causes the worst of viral hepatitis with faster progression to cirrhosis and HCC. An entry inhibitor, bulevirtide, has recently been approved and another drug, lonafarnib, is completing Phase 3 trials. Combination antiviral therapy for hepatitis D could improve dramatically the poor prognosis of HIV-HDV coinfected patients. The resumption of good medical practices in PLWH after the big disruption caused by COVID-19 will reduce the burden of viral hepatitis coinfections. Renewed efforts on HAV and HBV vaccination of susceptible individuals and earlier and wider prescription of antiviral therapy for HBV, HCV, and/or HDV coinfection should be prioritized in PLWH. The benefits of innovative strategies for viral hepatitis, including pre-exposure prophylaxis or use of long-acting antivirals, warrant further consideration in PLWH.


Subject(s)
COVID-19 , Carcinoma, Hepatocellular , Coinfection , Drug Users , HIV Infections , Hepatitis A , Hepatitis B, Chronic , Hepatitis B , Hepatitis C, Chronic , Hepatitis C , Liver Neoplasms , Sexual and Gender Minorities , Substance Abuse, Intravenous , Male , Humans , Antiviral Agents/therapeutic use , Carcinoma, Hepatocellular/epidemiology , Carcinoma, Hepatocellular/etiology , Hepatitis B, Chronic/complications , Homosexuality, Male , Coinfection/drug therapy , Coinfection/epidemiology , Coinfection/complications , Substance Abuse, Intravenous/complications , HIV Infections/complications , HIV Infections/drug therapy , HIV Infections/epidemiology , COVID-19/complications , Hepatitis C, Chronic/complications , Hepatitis C/drug therapy , Liver Cirrhosis/complications , Tenofovir/therapeutic use , Hepatitis B/drug therapy
16.
Curr Opin Virol ; 59: 101304, 2023 04.
Article in English | MEDLINE | ID: covidwho-2269888

ABSTRACT

Acute hyperinflammatory virus infections, such as influenza or coronavirus disease-19, are still a major health burden worldwide. In these diseases, a massive overproduction of pro-inflammatory cytokines and chemokines (cytokine storm syndrome) determine the severity of the disease, especially in late stages. Direct-acting antivirals against these pathogens have to be administered very early after infection to be effective and may induce viral resistance. Here, we summarize data on a host-targeted strategy using inhibitors of the cellular Raf/MEK/ERK kinase cascade that not only block replication of different RNA viruses but also suppress the hyperinflammatory cytokine response upon infection. In the first phase-II clinical trial of that approach, the MEK inhibitor Zapnometinib shows evidence of clinical benefit.


Subject(s)
COVID-19 , Hepatitis C, Chronic , Influenza, Human , Humans , Antiviral Agents/therapeutic use , Influenza, Human/drug therapy , Cytokines , Mitogen-Activated Protein Kinase Kinases/therapeutic use
17.
Int J Mol Sci ; 24(4)2023 Feb 16.
Article in English | MEDLINE | ID: covidwho-2240917

ABSTRACT

Recently, we have described novel pyridyl indole esters and peptidomimetics as potent inhibitors of the severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) main protease. Here, we analysed the impact of these compounds on viral replication. It has been shown that some antivirals against SARS-CoV-2 act in a cell line-specific way. Thus, the compounds were tested in Vero, Huh-7, and Calu-3 cells. We showed that the protease inhibitors at 30 µM suppress viral replication by up to 5 orders of magnitude in Huh-7 cells, while in Calu-3 cells, suppression by 2 orders of magnitude was achieved. Three pyridin-3-yl indole-carboxylates inhibited viral replication in all cell lines, indicating that they might repress viral replication in human tissue as well. Thus, we investigated three compounds in human precision-cut lung slices and observed donor-dependent antiviral activity in this patient-near system. Our results provide evidence that even direct-acting antivirals may act in a cell line-specific manner.


Subject(s)
COVID-19 , Hepatitis C, Chronic , Humans , Antiviral Agents/pharmacology , SARS-CoV-2 , Protease Inhibitors/pharmacology , Indoles/pharmacology
18.
researchsquare; 2023.
Preprint in English | PREPRINT-RESEARCHSQUARE | ID: ppzbmed-10.21203.rs.3.rs-2637452.v1

ABSTRACT

Background Malnutrition increases the complications and mortality in critically-ill children. A retrospective study was performed to define the role malnutrition on outcomes of multisystem inflammatory syndrome (MIS-C) due to COVID-19 in children.Methods Patients with MIS-C due to COVID-19 were evaluated for demographic features, anthropometric parameters, clinical findings and outcomes. Patients with z scores of body mass index (> 5 years-of-age) and weight-for-age (< 5 years-of-age) < -2 were considered as malnourished. Sarcopenia was defined by total psoas muscle area (tPMA), calculated on abdominal computed tomography (CT) at the level of L3 and L4 vertebrae. The z scores <- 2 for tPMA were considered as sarcopenia. The results of patients with (M+) and without (M-) were compared.Results Twenty-seven patients were included. Forty-four percent (n = 12) of patients had malnutrition. Malnutrition was classified as mild to moderate (1/3), severe (1/3) and overweight (1/3). Eighty-two cases had acute malnutrition. Among MIS-C symptom criteria, rash was significantly higher in M + children (p<0.05). Laboratory investigations showed higher ferritin levels in M + patients (p<0.05). The median tPMA and sarcopenia is significantly higher in M + when compared to M- group (42% vs 7%, p<0.05). The oral feeding time, complication rates and length of hospital stay were similar in both groups (p>0.05).Conclusion Children with MIS-C due to COVID-19 already have mild to severe malnutrition at admission. Rash and higher ferritin levels are more common in patients with malnutrition. In addition to anthropometric parameters, sarcopenia calculated using tPMA can be used to predict malnutrition in critically-ill children.


Subject(s)
Cryopyrin-Associated Periodic Syndromes , Exanthema , Hepatitis C, Chronic , Malnutrition , Sarcopenia , COVID-19
19.
APMIS ; 131(3): 128-132, 2023 Mar.
Article in English | MEDLINE | ID: covidwho-2231536

ABSTRACT

In Denmark, vaccination against Severe Acute Respiratory Syndrome Corona Virus 2 (SARS-CoV-2) has been with the Pfizer-BioNTech (BTN162b2) or the Moderna (mRNA-1273) mRNA vaccines. Patients with chronic hepatitis C virus (HCV) infection followed in our clinic received mRNA vaccinations according to the Danish roll-out vaccination plan. To monitor HCV infection, RNA was extracted from patient plasma and RNA sequencing was performed on the Illumina platform. In 10 of 108 HCV patient samples, full-length or traces of SARS-CoV-2 spike mRNA vaccine sequences were found in blood up to 28 days after COVID-19 vaccination. Detection of mRNA vaccine sequences in blood after vaccination adds important knowledge regarding this technology and should lead to further research into the design of lipid-nanoparticles and the half-life of these and mRNA vaccines in humans.


Subject(s)
COVID-19 , Hepatitis C, Chronic , Hepatitis C , Humans , COVID-19 Vaccines , SARS-CoV-2/genetics , COVID-19/prevention & control , Vaccination , Hepacivirus , Antibodies, Viral
20.
Viruses ; 14(3)2022 03 16.
Article in English | MEDLINE | ID: covidwho-1810308

ABSTRACT

Enhancing treatment uptake for hepatitis C to achieve the elimination goals set by the World Health Organization could be achieved by reducing the treatment duration. The aim of this study was to compare the sustained virological response at week 12 (SVR12) after four weeks of glecaprevir/pibrentasvir (GLE/PIB) + ribavirin compared to eight weeks of GLE/PIB and to estimate predictors for SVR12 with four weeks of treatment through a multicenter open label randomized controlled trial. Patients were randomized 2:1 (4 weeks:8 weeks) and stratified by genotype 3 and were treatment naïve of all genotypes and without significant liver fibrosis. A total of 27 patients were analyzed for predictors for SVR12, including 15 from the first pilot phase of the study. In the 'modified intention to treat' group, 100% (7/7) achieved cure after eight weeks and for patients treated for four weeks the SVR12 was 58.3% (7/12). However, patients with a baseline viral load <2 mill IU/mL had 93% SVR12. The study closed prematurely due to the low number of included patients due to the COVID-19 pandemic. Our results suggest that viral load should be taken into account when considering trials of short course treatment.


Subject(s)
COVID-19 , Hepatitis C, Chronic , Aminoisobutyric Acids , Antiviral Agents/therapeutic use , Benzimidazoles , Cyclopropanes , Hepatitis C, Chronic/drug therapy , Humans , Lactams, Macrocyclic , Leucine/analogs & derivatives , Pandemics , Proline/analogs & derivatives , Pyrrolidines , Quinoxalines , Ribavirin/therapeutic use , Sulfonamides
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