Synthesis, Antimalarial Activity and Molecular Dynamics Studies of Pipecolisporin: A Novel Cyclic Hexapeptide with Potent Therapeutic Potential.

Malaria, caused by species and transmitted by mosquitoes, continues to pose a significant global health threat. Pipecolisporin, a cyclic hexapeptide isolated from , has emerged as a promising antimalarial candidate due to its potent biological activity and stability. This study explores the synthesis, antimalarial activity, and computational studies of pipecolisporin, aiming to better understand its therapeutic potential.

The Oncogenic Human Papillomavirus Involvement as a Risk Factor of Measles, Mumps, and Rubella Vaccine Immunotherapy Failure in Anogenital Warts.

Anogenital warts (AGW) including multiple types of human papillomavirus (HPV) are prevalent. In this context, oncogenic HPV infection leads to anogenital cancers and the lesion is more persistent. Several research on AGW therapy with measles, mumps, and rubella (MMR) vaccine injections have been successful without adverse effects.

Atypical HPV Typing: Detection of Genital-Associated HPV Type 6 in Verruca Vulgaris of the Hands and Feet in an HIV-Positive Patient.

Verruca vulgaris is a cutaneous infection predominantly caused by human papillomavirus (HPV) type 1, 2, and 4. In immunocompromised individuals infected with human immunodeficiency virus (HIV) infection, HPV leads to a higher prevalence of infections and also has a greater likelihood of being infected with atypical types such as genital-associated HPV in extragenital sites. This case report describes a 48-year-old male patient who presented with skin-colored verrucous papules on the hands and feet, with no evidence of genital lesions.

Sexual Abuse as a Cause of Sexually Transmitted Infections (STI) and Human Immunodeficiency Virus (HIV) in a Bisexual Adolescent Indonesian: A Case Report.

Sexual abuse is any non-consensual sexual act or behavior using force, with significant concern in "men who have sex with men" (MSM), and younger individuals. The incidence of sexually transmitted infections (STI) is also prevalent in the cases of sexual abuse in this population, showing the need for comprehensive medical and psychological intervention. This study presents a case of a 15-year-old Indonesian MSM adolescent who experienced three forced sexual intercourse with a mid-thirties male friend 6 months before the consultation.

A comparison of freeze- and air-dried chitosan salicylaldehyde/calcium oxide biocomposites for optimized removal of acid red 88 dye.

Chitosan salicylaldehyde/calcium oxide nanoparticle (CS-SL/CaO) was synthesized by hydrothermal process and isolated via different drying processes, namely, air-drying (AD) and freeze-drying (FD). The physicochemical properties of freeze-dried CS-SL/CaO nanoparticle (CS-SL/CaO-FD) and air-dried CS-SL/CaO nanoparticle (CS-SL/CaO-AD) were compared. In particular, the adsorption properties reveal that the specific surface area of CS-SL/CaO-FD increased by ca.

Freeze-drying synthesis of mesoporous magnetic grafted chitosan/calcium oxide nanoparticle for remazol brilliant blue dye removal: A statistical optimization.

Herein, a mesoporous magnetic chitosan-salicylaldehyde/calcium oxide nanoparticle (CS-SL/CaO/FeO) biocomposite adsorbent that was prepared via freeze-drying. The CS-SL/CaO/FeO was utilized for the adsorption of ramazol brilliant blue (RBB) dye from aqueous solution. The physicochemical properties of the CS-SL/CaO/FeO were evaluated using diverse characterization techniques, including BET, XRD, FTIR, FESEM-EDX, CHNS, and pH.

Effectiveness and safety of tuberculin purified protein derivative for the treatment of anogenital warts in patients with human immunodeficiency virus.

Individuals with human immunodeficiency virus (HIV) infection are prone to developing persistent and unremitting anogenital warts (AGWs). To address this health condition, immunotherapy using tuberculin purified protein derivative (PPD) has been proven to be a promising novel and safe treatment for AGWs in HIV patients. Therefore, this study involved a case of a 21-year-old man with stage I HIV infection, possessing CD4 counts 548 cells/uL and routinely receiving HIV antiretroviral.

Anogenital Warts in Geriatrics: Immunosenescence and New Sexual Contacts? A Case Report.

Introduction: Anogenital warts (AGW) are sexually transmitted infections (STIs) caused by the human papillomavirus (HPV), particularly types 6 and 11. The highest incidence of AGW occurs in the age group of 15-24 years. However, as life expectancy increases, there is a significant rise in the geriatric population worldwide.

Total Synthesis of Cyclosenegalin A.

A Pro-Gly-typed cyclopeptide, cyclosenegalin A, was firstly isolated from Annona senegalensis and Annona scleroderma. In this study, we reported synthesis the cycloheptapeptide with a combination of solid- and solution-phase synthetic methods. This study also compared the effectiveness of β-turn inducer type I and II in cyclosenegalin A to facilitate the cyclization process.

The isolation of novel pregnane steroids from Miq. and the cytotoxicity against breast cancer cell lines (MCF-7).

Steroid groups isolated from many plants are known to play a significant role in various biological systems. Therefore, this research aimed to analyze two novel pregnane steroids, pachylenone A (1) and pachylenone B (2), isolated from Miq. The cytotoxicity of the steroids was evaluated against MCF-7 breast cancer cell lines with other known steroid compounds, namely 5α-dihydroprogesterone (3), GSD-8 (4), -5α-pregn-l7(20)-en-3,16-dion (5), 20β-hydroxy-5αH-pregnan-3-one (6), 3β-hydroxy-5α-pregnan-20-one (7), aglaiasterol B (8), and 2β,3β-dihydroxypregnan-16-one (9).

Total synthesis of [β-HIle]-nodupetide: effect of ester to amide substitution on its antimicrobial activity.

The increasing prevalence of deaths due to multidrug-resistant bacteria (MDRB) in infectious disease therapy has become a global health concern. This led to the development of new antimicrobial therapeutic agents that can combat resistance to pathogenic bacteria. The utilization of natural peptide compounds as potential antimicrobial agents is very promising.

A Review and Case Study of Genital and Extragenital Human Papillomavirus Type 6 and 11 Infections in Men Who Have Sex with Men Accompanied by Human Immunodeficiency Virus Infection.

Extragenital warts caused by HPV types 6 and 11 are rarely reported. However, major risk factors for anogenital warts (AGW) include men who have sex with men (MSM) and Human Immunodeficiency Virus (HIV) infection. The incidence of extragenital warts among these populations has not been reported.

Antioxidant and Antimicrobial Potential of Peptide from Rabbit Meat Hydrolysate Prepared by Trypsin and Zingibain.

<b>Background and Objective:</b> Rabbit meat is a livestock product potentially viable as a protein source to obtain peptides. Antioxidant and antimicrobial peptides are ingredients extracted from various foods through enzymatic hydrolysis, chemical hydrolysis and fermentation to produce health-promoting foods. This research aims to investigate the potential of rabbit meat as a source of antioxidant and antimicrobial peptides through hydrolysis using trypsin and zingibain enzymes.

Computational studies and synthesis of iodine-labeled nocardiotide A analogs as a peptide-based theragnostic radiopharmaceutical ligand for cancer targeting SSTR2.

Radiolabeled peptides belong to a highly specific group of radiotracers used in oncology, particularly for diagnostics and cancer therapy. With the notable advantages of high binding affinity and selectivity to cancer cells, they have proven to be very useful in nuclear medicine. As a result, efforts have been focused on discovering new peptide sequences for radiopeptide preparation.

Excelxylin A: a new A-ring tirucallane triterpenoid from the stem bark of .

A new -A tirucallane triterpenoid named excelxylin A (), along with two known -A triterpenoids (), were isolated from the -hexane extract of (Spreng.) Blume ex G.Don stem bark.

Efficacy and Safety Profile of Tuberculin Protein Purified Derivative Injection As Immunotherapy For the Treatment of Cutaneous and Anogenital Warts: A Review Article.

Introduction: Various treatments available today for anogenital and cutaneous warts have limitations, including time-consuming, challenging to perform, and the risk of scarring. A new treatment using tuberculin purified protein derivative (PPD) has been developed, which is expected to generate cellular immunity against HPV.

Objective: To assess the evidence for the efficacy and safety of PPD treatment for cutaneous and anogenital warts.

Correction: Synthesis and anticancer evaluation of [d-Ala]-nocardiotide A.

[This corrects the article DOI: 10.1039/D4RA00025K.].

Paraxylines A-G: Highly oxygenated preurianin-type limonoids with immunomodulatory TLR4 and cytotoxic activities from the stem bark of Dysoxylum parasiticum.

Seven previously undescribed preurianin-type limonoids, namely paraxylines A-G, and three known analogs were isolated from stem bark of Dysoxylum parasiticum. The structures, including absolute configurations, were established through spectroscopic analyses, quantum chemical calculations using the density functional theory method, as well as the DP4+ algorithm. Paraxylines A-G were identified as the first preurianin-type with full substitution at C, D-rings, leading to the highly oxygenated seco-limonoids skeleton.

Synthesis and anticancer evaluation of [d-Ala]-nocardiotide A.

Cancer is currently one of the biggest causes of death in the world. Like some microorganisms, cancer cells also develop resistance to various chemotherapy drugs and are termed multidrug resistant (MDR). In this regard, there is a need to develop new alternative anticancer agents.

The Importance of p16 and p53 Immunohistochemical Staining in Diagnosing Vulvar Lichen Simplex Chronicus Mimicking Vulvar Intraepithelial Neoplasia with False-Positive Human Papillomavirus Type 66.

Vulvar intraepithelial neoplasia (VIN), the precursor lesion of vulvar squamous cell carcinoma (VSCC), may present as pruritic or asymptomatic lichenified plaques surrounded by single or multiple discrete or confluent macules or papules. VIN is divided into high-grade squamous intraepithelial lesion (HSIL), which is human papillomavirus (HPV)-driven, and differentiated VIN (DVIN), which develops independently of HPV. Histopathological examination and HPV genotyping polymerase chain reaction (PCR) tests should be performed to distinguish between HSIL and DVIN.

Epimerisation in Peptide Synthesis.

Epimerisation is basically a chemical conversion that includes the transformation of an epimer into another epimer or its chiral partner. Epimerisation of amino acid is a side reaction that sometimes happens during peptide synthesis. It became the most avoided reaction because the process affects the overall conformation of the molecule, eventually even altering the bioactivity of the peptide.

A novel dataset of potato leaf disease in uncontrolled environment.

Potatoes are of the utmost importance for both food processing and daily consumption; however, they are also prone to pests and diseases, which can cause significant economic losses. To address this issue, the implementation of image processing and computer vision methods in conjunction with machine learning and deep learning techniques can serve as an alternative approach for quickly identifying diseases in potato leaves. Several studies have demonstrated promising results.

An Overview on Antimalarial Peptides: Natural Sources, Synthetic Methodology and Biological Properties.

Peptide compounds play a significant role in medicinal chemistry as they can inhibit the activity of species that cause malaria. This literature review summarizes the isolation of antimalarial peptides, the synthesis method with the detailed structure and sequences of each peptide, and discusses the biological activity of the isolated and synthesized compounds. The synthetic routes and reactions for cyclic and linear antimalarial peptides are systematically highlighted in this review including preparing building blocks, protection and deprotection, coupling and cyclization reactions until the target compound is obtained.