Article
Immunology
Abigail Norris Turner, Alexandria Carter, Yih-Ling Tzeng, David S. Stephens, Morgan Brown, Brandon Snyder, Adam C. Retchless, Xin Wang, Jose A. Bazan
Summary: The study showed that urethral infection with the US_NmUC did not offer protection against gonorrhea despite high sequence similarity in shared protein antigens.
CLINICAL INFECTIOUS DISEASES
(2022)
Article
Microbiology
Tiffany N. Harris-Jones, Krizia M. Perez Medina, Kathleen T. Hackett, Melanie A. Schave, Amy K. Klimowicz, Ryan E. Schaub, Joseph P. Dillard
Summary: Infection with Neisseria gonorrhoeae leads to inflammation that causes disease symptoms, and the study of MltG reveals its importance in controlling cell wall growth, cell wall fragment production, and bacterial cell size. The increased antibiotic sensitivities of mltG mutants suggest that targeting MltG with antimicrobial drugs could restore sensitivity to cell wall targeting antibiotics.
JOURNAL OF BACTERIOLOGY
(2023)
Article
Microbiology
Stavros A. Maurakis, Julie L. Stoudenmire, Jeffrey K. Rymer, Walter J. Chazin, Cynthia Nau Cornelissen
Summary: Gonorrhea is a global threat to public health due to the increasing incidence of antimicrobial drug resistance, rising treatment costs, and lack of a protective vaccine. Members of the family of outer membrane TonB-dependent metal transporters have emerged as promising candidates for novel therapeutic and prevention strategies. This study characterized the interaction between the zinc importer TdfJ and its human zinc source, S100A7, and identified a key region of TdfJ that mediates this interaction. Understanding the relationships between bacterial nutrient receptors and their host nutrient sources may help in identifying effective prophylaxis and treatment for this important human disease.
Article
Immunology
Jia Mun Chan, Kathleen T. Hackett, Katelynn L. Woodhams, Ryan E. Schaub, Joseph P. Dillard
Summary: Neisseria meningitidis, a human-restricted pathogen known for causing invasive meningococcal disease, has a nonpathogenic life as a harmless colonizer of the human naso- and oropharyngeal space. During its growth, N. meningitidis releases small fragments of peptidoglycan (PG), including a low level of tripeptide PG monomer that can stimulate the human innate immune receptor NOD1. This study shows that N. meningitidis releases more PG-derived peptides than PG monomers, and these peptides activate NOD1. The presence of the proteins AmiC and NlpD is necessary for the generation of these peptides, which are involved in cell separation and survival during infection in human blood.
INFECTION AND IMMUNITY
(2022)
Article
Microbiology
Steven Park, Riccardo Russo, Landon Westfall, Riju Shrestha, Matthew Zimmerman, Veronique Dartois, Natalia Kurepina, Barry Kreiswirth, Eric Singleton, Shao-Gang Li, Nisha Mittal, Yong-Mo Ahn, Joseph Bilotta, Kristie L. Connolly, Ann E. Jerse, Joel S. Freundlich, David S. Perlin
Summary: JSF-2659 is a novel preclinical drug candidate with potent activity against Neisseria gonorrhoeae and high-threat multidrug resistant organisms, and it has low potential to develop new resistance.
ANTIMICROBIAL AGENTS AND CHEMOTHERAPY
(2022)
Review
Immunology
Julie Lynn Stoudenmire, Ashley Nicole Greenawalt, Cynthia Nau Cornelissen
Summary: Transition metals are crucial for metalloprotein function, but some bacteria can pirate these metals and survive in metal-restricted environments. Neisseria gonorrhoeae, the causative agent of gonorrhea, is an example of a bacterium that circumvents immune defenses by extracting iron ions from human host metalloproteins. This review focuses on the function, expression, and iron acquisition mechanisms of metalloproteins at Neisseria gonorrhoeae infection sites.
FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY
(2022)
Review
Immunology
Alexis Hope Branch, Julie L. Stoudenmire, Kate L. Seib, Cynthia Nau Cornelissen
Summary: Neisseria gonorrhoeae and Neisseria meningitidis, human-specific pathogens, have evolved similar mechanisms to survive and adapt in a metal-restricted host. This review discusses the host's regulation of zinc, manganese, and copper levels, and the pathogenic Neisseria's ability to sense and respond to such changes.
FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY
(2022)
Article
Pharmacology & Pharmacy
Priyal Bagwe, Lotika Bajaj, Ipshita Menon, Keegan Braz Gomes, Akanksha Kale, Smital Patil, Sharon Vijayanand, Rikhav Gala, Martin J. D'Souza, Susu M. Zughaier
Summary: There is a concerning increase in global gonorrhea cases, as the bacteria causing the infection has developed antimicrobial resistance. This study explores the immunogenicity of a potential gonorrhea vaccine in mice using dissolving microneedles. The vaccine formulation showed promising results in inducing humoral, cellular, and protective immune responses against gonococcal infection.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2023)
Review
Immunology
Stavros A. Maurakis, Cynthia Nau Cornelissen
Summary: Gonorrhea is a global health concern caused by Neisseria gonorrhoeae, which rapidly develops antimicrobial resistance and does not provide protective immunity post-infection. Efforts to create a successful vaccine for gonorrhea have been hindered by the bacterial envelope's ability to undergo rapid changes, making it difficult for the human immune system to recognize it. Recent advancements in computational epitope identification and prediction methods have led to promising progress in developing a viable gonorrheal vaccine.
FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Jia Liu, Chunjun Yang, Cheng Cheng, Chenchen Zhang, Jun Zhao, Chuyu Fu
Summary: A new treatment method has been found to have significant antimicrobial effects on Neisseria gonorrhoeae, inducing bacterial death and affecting bacterial viability and physiological state.
Article
Multidisciplinary Sciences
Leonardo Miranda dos Santos, Josiellem Damasceno de Souza, Hilary Acha Mbakwa, Akim Felipe Santos Nobre, Rodrigo Covre Vieira, Stephen Francis Ferrari, Anderson Raiol Rodrigues, Edna Aoba Yassui Ishikawa, Joao Farias Guerreiro, Maisa Silva de Sousa
Summary: A study conducted in the Brazilian Amazon region found a high prevalence of HPV infection in young, unmarried women, particularly in those who started their sex lives early, had multiple sexual partners, and used oral contraceptives. The prevalence of C. trachomatis infection was high only in young women.
Article
Immunology
Justin L. Holderman, Jesse C. Thomas, Karen Schlanger, Jamie M. Black, Katy Town, Sancta B. St Cyr, Cau D. Pham, Robert D. Kirkcaldy
Summary: A cluster of 14 Neisseria gonorrhoeae isolates with high-level azithromycin resistance was identified in Indiana, primarily among white men who have sex with men. Although few patients named each other as partners, genomic sequencing revealed isolates as closely related.
CLINICAL INFECTIOUS DISEASES
(2021)
Article
Ophthalmology
Chien-Chia Su, Chia-Mao Gao, Fu Ti Peng, Tzuu-Shuh Jou, I-Jong Wang
Summary: This study investigated the pathogenesis of CMV-associated anterior segment infection and evaluated the effects of ganciclovir and glucocorticoid treatment. An inoculation model was used to reproduce the infection in rats, and various methods were used to analyze the immune response. The results showed that early ocular immune response reduced virus DNA and alleviated lymphadenopathy, and ganciclovir therapy enhanced cytokine expression. However, glucocorticoid treatment hindered viral clearance.
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE
(2022)
Article
Multidisciplinary Sciences
Yuan Ma, Wei Sun, Zhifei Ye, Liuhui Liu, Menghuan Li, Jinhui Shang, Xinyu Xu, Hui Cao, Li Xu, Yongchao Liu, Xiangqing Kong, Guosheng Song, Xiao-Bing Zhang
Summary: This study presents a multiplexed diagnostic tool that has the potential to assess oxidative stress levels in the development of atherosclerosis. The tool incorporates photoacoustic imaging and urinalysis to dynamically report malondialdehyde levels in plaque and urine. By leveraging molecular design and a ratiometric photoacoustic nanoprobe, the tool enables the reflection of intraplaque malondialdehyde and detection of urinary malondialdehyde.
Article
Biochemical Research Methods
Yangzom Dawa, Yurong Du, Qi Wang, Chengbiao Chen, Denglang Zou, Desheng Qi, Jianbin Ma, Jun Dang
Summary: Traditional Tibetan medicine (TTM) provides valuable novel therapeutic lead molecules from natural products. This study successfully separated and identified 4 main radical scavenging compounds from the methanolic extract of Saxifraga atrata using efficient methods. The developed methodology is effective for targeted isolation of high-purity compounds and rapid identification and isolation of DPPH inhibitors from various natural products.
JOURNAL OF CHROMATOGRAPHY A
(2021)
Article
Microbiology
Elizabeth A. Stohl, Jonathan D. Lenz, Joseph P. Dillard, H. Steven Seifert
JOURNAL OF BACTERIOLOGY
(2016)
Article
Biochemistry & Molecular Biology
Jonathan D. Lenz, Elizabeth A. Stohl, Rosanna M. Robertson, Kathleen T. Hackett, Kathryn Fisher, Kalia Xiong, Mijoon Lee, Dusan Hesek, Shahriar Mobashery, H. Steven Seifert, Christopher Davies, Joseph P. Dillard
JOURNAL OF BIOLOGICAL CHEMISTRY
(2016)
Article
Microbiology
Jonathan D. Lenz, Kristina A. Shirk, Adrienne Jolicoeur, Joseph P. Dillard
ANTIMICROBIAL AGENTS AND CHEMOTHERAPY
(2018)
Article
Immunology
Matthew B. Lawrenz, Jonathan D. Lenz, Virginia L. Miller
INFECTION AND IMMUNITY
(2009)
Article
Immunology
Jonathan D. Lenz, Brenda R. S. Temple, Virginia L. Miller
INFECTION AND IMMUNITY
(2012)
Article
Immunology
Katelynn L. Woodhams, Jia Mun Chan, Jonathan D. Lenz, Kathleen T. Hackett, Joseph P. Dillard
INFECTION AND IMMUNITY
(2013)
Article
Microbiology
Jonathan D. Lenz, Matthew B. Lawrenz, David G. Cotter, M. Chelsea Lane, Rodrigo J. Gonzalez, Michelle Palacios, Virginia L. Miller
JOURNAL OF BACTERIOLOGY
(2011)
Article
Microbiology
M. Chelsea Lane, Jonathan D. Lenz, Virginia L. Miller
JOURNAL OF MEDICAL MICROBIOLOGY
(2013)
Article
Multidisciplinary Sciences
Senthil V. Bhoopalan, Andrzej Piekarowicz, Jonathan D. Lenz, Joseph P. Dillard, Daniel C. Stein
SCIENTIFIC REPORTS
(2016)
Review
Immunology
Jonathan D. Lenz, Joseph P. Dillard
FRONTIERS IN IMMUNOLOGY
(2018)
Article
Immunology
Y Du, J Lenz, CG Arvidson
INFECTION AND IMMUNITY
(2005)