Publications by authors named "M H Schaffer"

Opioids are widely prescribed pain medications that have the potential for misuse and abuse. As part of a routine procedure, our laboratory frequently encounters questions from clients/Medical Review Officers (MROs) regarding opioid hair concentrations in relation to the amount of opioid taken as part of a prescription. In this manuscript, we have analyzed a large number of real-world examples of opioid hair concentrations following self-reported consumption of an opioid prescription regimen.

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Purpose: To determine whether periprosthetic drain insertion for hernioplasty using sublay mesh augmentation influences retromuscular fluid collections (RFC) and the clinical course.

Methods: Forty-two patients with open repair of midline hernias (M2-4, W1, European Hernia Society classification) were allocated to groups with or without retromuscular drains. Subcutaneous drainages were used in both groups to avoid confounding from surgical site occurrences due to superficial, subcutaneous fluid collections.

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Host genetics shape immune responses and influence severity of infectious diseases. The HLA-B -21 M/T dimorphism tunes the functionality of natural killer (NK) cells expressing the inhibitory receptor NKG2A. NKG2A NK cells have been reported to recognize SARS-CoV-2-infected cells, but it remains unclear whether the HLA-B -21 M/T dimorphism associates with COVID-19 severity.

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Unlabelled: Seemingly simple bacteria mount intricate adaptive responses when exposed to physical stress or nutrient limitation, and the activation of these responses is governed by complex signal transduction networks. Upon entry into the stationary growth phase, the soil bacterium may develop natural competence, form biofilms or stress-resistant cells, or ultimately trigger a cellular differentiation program leading to spore formation. Master regulators, such as Spo0A, ComK, SinR, and SigB, constantly monitor the bacterium's environment and then determine appropriate adaptive responses.

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Background And Purpose: Classic Kaposi sarcoma (CKS) is a rare vascular disease mainly found in populations of Mediterranean origin. The pathogenesis involves Human Herpes Virus 8 (HHV8) and genetic mutations such as SNP309 in the MDM2 gene. The recently discovered BPTF mutation in cells of CKS patients demonstrated higher latency-associated nuclear antigen (LANA) staining and altered vital transcriptomics, implicating a potential role in tumorigenesis.

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