Separable dorsal raphe dopamine projections mimic the facets of a loneliness-like state.

Affiliative social connections facilitate well-being and survival in numerous species. Engaging in social interactions requires positive or negative motivational drive, elicited through coordinated activity across neural circuits. However, the identity, interconnectivity, and functional encoding of social information within these circuits remains poorly understood.

Positionally distinct interferon-stimulated dermal immune-acting fibroblasts promote neutrophil recruitment in Sweet syndrome.

Background: Sweet syndrome is an inflammatory skin disease characterized by robust neutrophil infiltration into the dermis. The pathogenesis of Sweet syndrome and its distinguishing features compared to other neutrophilic dermatoses, such as pyoderma gangrenosum, remain poorly understood.

Objective: Our aim was to define the cellular and molecular landscape of the skin of patients with Sweet syndrome.

Social Exclusion Amplifies Behavioral Responses to Physical Pain via Insular Neuromodulation.

The "Pain Overlap Theory" proposes that the experience of social pain overlaps with and amplifies the experience of physical pain by sharing parts of the same underlying processing systems . In humans, the insular cortex has been implicated in this overlap of physical and social pain, but a mechanistic link has not been made. To determine whether social pain can subsequently impact responses to nociceptive stimuli via convergent electrical signals (spikes) or convergent chemical signals (neuromodulators), we designed a novel Social Exclusion paradigm termed the Fear of Missing Out (FOMO) Task which facilitates a mechanistic investigation in mice.

Social Exclusion Amplifies Behavioral Responses to Physical Pain via Insular Neuromodulation.

The "Pain Overlap Theory" (1) proposes that the experience of social pain overlaps with and amplifies the experience of physical pain by sharing parts of the same underlying processing systems (2-6). In humans, the insular cortex has been implicated in this overlap of physical and social pain, but a mechanistic link has not been made (2,4,5,7-9). To determine whether social pain can subsequently impact responses to nociceptive stimuli via convergent electrical signals (spikes) or convergent chemical signals (neuromodulators), we designed a novel Social Exclusion paradigm termed the Fear of Missing Out (FOMO) Task which facilitates a mechanistic investigation in mice.

Enhancing leuprolide penetration through enterocytes via the ER-Golgi pathway using lipophilic complexation.

Oral delivery of peptide drugs remains one of the most formidable challenges in the frontier of pharmaceutical research. Peptide drugs typically suffer from exceptionally low oral bioavailability, primarily attributed to rigorous enzymatic degradation within the gastrointestinal (GI) tract, limited ability to traverse the enterocyte barrier, and significant first-pass hepatic metabolism. Absorption of peptide drugs via the lymphatic route could potentially bypass intracellular lysosome degradation and hepatic first-pass metabolism.

Clinical Molecular Testing for Clonal Relatedness of Second Melanoma Tumors: A Real-World Appraisal.

Context.—: Patients with melanoma can develop second tumors representing either metastases or new primary melanoma. This distinction has profound implications for management.

A case of NONO::TFE3 cutaneous epithelioid and spindle cell tumor with local recurrence after complete excision.

Mesenchymal tumors may display morphologic and immunohistochemical overlap with melanocytic tumors, presenting a pitfall for misdiagnosis. We report a 62-year-old woman who presented with a recurrent dermal and subcutaneous tumor over the Achilles tendon 15 years following complete excision. Both the primary and the recurrent tumors were characterized by nests and sheets of epithelioid and spindle cells with eosinophilic cytoplasm and uniform ovoid nuclei.

Utility of C4d Immunohistochemistry in the Diagnosis of Esophageal Pemphigus Vulgaris.

To assess the utility of C4d immunohistochemistry for esophageal pemphigus vulgaris. We searched for patients with a history of esophageal pemphigus vulgaris who had esophageal biopsies for routine hematoxylin and eosin (H&E) staining. A total of 8 biopsies from 7 patients were available.

Nonspecificity of Immunohistochemistry for Mycobacteria Species Using a Rabbit Polyclonal Antibody.

Context.—: Recent publications have featured immunohistochemistry (IHC) as a sensitive tool for detecting Mycobacterium tuberculosis and nontuberculous mycobacteria, but performance is limited to cases suspected to have mycobacterial infection.

Objective.

Clinical and Histopathologic Spectrum of Toxic Erythema of Chemotherapy: A Series of 56 Cases From a Single Institution.

Introduction: Although many individual cases and small series of toxic erythema of chemotherapy (TEC) have been described, the full spectrum of findings is not well understood.

Objective: To provide a comprehensive review of the clinical and histopathologic features of TEC with an emphasis on novel histopathologic findings.

Methods: We searched our electronic medical record for "toxic erythema of chemotherapy" or "neutrophilic eccrine hidradenitis.

Effects of reproductive status on behavioral and neural responses to isolated pup stimuli in female California mice.

The transition to motherhood in mammals is marked by changes in females' perception of and responsiveness to sensory stimuli from infants. Our understanding of maternally induced sensory plasticity relies most heavily on studies in uniparental, promiscuous house mice and rats, which may not be representative of rodent species with different life histories. We exposed biparental, monogamous California mouse (Peromyscus californicus) mothers and ovariectomized virgin females to one of four acoustic and olfactory stimulus combinations (Control: clean cotton and white noise; Call: clean cotton and pup vocalizations; Odor: pup-scented cotton and white noise; Call + Odor: pup-scented cotton and pup vocalizations) and quantified females' behavior and Fos expression in select brain regions.

Margin status in vulvovaginal melanoma: Management and oncologic outcomes of 50 cases.

Objectives: To determine the influence of margin status, including preinvasive disease at the margin, on local recurrence and overall survival (OS) in patients with vulvovaginal melanoma.

Methods: All patients with Stage 0-III vulvovaginal melanoma treated with primary surgical management between 1/2010-12/2019 were included. Margin status was categorized as negative, preinvasive disease (atypical junctional melanocytic hyperplasia and melanoma in situ), and invasive melanoma.

The effect of tone language background on cue integration in pitch perception.

This study explores the effect of native language and musicality on voice quality cue integration in pitch perception. Previous work by Cui and Kang [(2019). J.

Utility of GLI1 RNA Chromogenic in Situ Hybridization in Distinguishing Basal Cell Carcinoma From Histopathologic Mimics.

Basal cell carcinoma (BCC) is the most common human malignancy and is a leading cause of nonmelanoma skin cancer-related morbidity. BCC has several histologic mimics which may have treatment and prognostic implications. Furthermore, BCC may show alternative differentiation toward a variety of cutaneous structures.

CD30 expression in cutaneous B-cell lymphomas.

Introduction: CD30 expression has been infrequently described in cutaneous B-cell lymphomas (CBCLs). We examined CD30 expression in reactive lymphoid hyperplasia (RLH) and CBCL and correlated expression with clinicopathologic features.

Methods: CD30 was examined in 82 CBCL patients and 10 RLH patients that had been evaluated in our cutaneous lymphoma clinics.

Multiplex Immunohistochemistry and Immunofluorescence: A Practical Update for Pathologists.

Our understanding of the biology and management of human disease has undergone a remarkable evolution in recent decades. Improved understanding of the roles of complex immune populations in the tumor microenvironment has advanced our knowledge of antitumor immunity, and immunotherapy has radically improved outcomes for many advanced cancers. Digital pathology has unlocked new possibilities for the assessment and discovery of the tumor microenvironment, such as quantitative and spatial image analysis.

Molecular Profiling of Syringocystadenocarcinoma Papilliferum Reveals RAS-Activating Mutations.

Context.—: Syringocystadenocarcinoma papilliferum (SCACP) is a rare adnexal carcinoma and the malignant counterpart of syringocystadenoma papilliferum (SCAP), which is commonly located on the head and neck and may arise in association with a nevus sebaceus. RAS mutations have been identified in both SCAP and nevus sebaceus.