Related Experiment Video
Updated: Feb 14, 2026

16:11
Thermochemical Studies of NiII and ZnII Ternary Complexes Using Ion Mobility-Mass Spectrometry
Published on: June 8, 2022
2.8K
Telangiectasia macularis eruptiva perstans associated with a sicca complex
Ramone Faith Williams1, Rosalynn M Nazarian, Gideon P Smith
1Division of Dermatology, Albert Einstein School of Medicine, Montefiore Medical Center. ramone.f.williams@gmail.com.
Dermatology Online Journal
|February 23, 2018
Summary
A woman developed telangiectasia macularis eruptiva perstans (TMEP) with dry eyes and mouth. Aberrant mast cells in her salivary gland suggest mastocytosis causes salivary compromise.
Area of Science:
- Dermatology
- Immunology
- Pathology
Background:
- Telangiectasia macularis eruptiva perstans (TMEP) is a rare cutaneous condition.
- Mast cell disorders can affect multiple organ systems.
Observation:
- A woman in her 50s presented with TMEP, dry eyes, and dry mouth.
- Skin biopsy confirmed TMEP; elevated serum tryptase indicated systemic involvement.
- Salivary gland biopsy showed aberrant CD117-positive mast cell infiltrates.
Findings:
- The patient's symptoms and biopsy results suggest a link between TMEP and salivary gland dysfunction.
- Aberrant mast cell infiltration in salivary glands points to mastocytosis as a potential cause of dry mouth and eyes.
Implications:
- This case highlights a potential mechanism for salivary compromise in mast cell-related disorders.
- Further research into mastocytosis's role in sicca symptoms is warranted.
Related Concept Videos
Protein Complex Assembly
16.9K
Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types. Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
Many viruses self-assemble into a fully functional unit using the infected host cell to...
16.9K
Protein Complexes with Interchangeable Parts
3.0K
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order...
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order...
3.0K
Complex Numbers
325
The real number system cannot represent the square root of a negative number, which restricts solutions for certain equations, such as quadratics with negative discriminants. To address this, the complex number system was developed, introducing the imaginary unit i, where i = √(-1). This extension allows for the representation of all roots, including those involving negative radicands.A complex number is written in the form x + yi, where x and y are real numbers. Here, x represents the...
325
Formation of Complex Ions
26.3K
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
26.3K
Complex Power
933
Power engineers have introduced the concept of complex power to determine the cumulative effect of parallel loads. This idea plays a crucial role in power analysis because it encompasses all the details related to the power consumed by a specific load.
Complex power is defined as the multiplication of the voltage and the complex conjugate of the current. The magnitude of this power, known as apparent power, is measured in volt-amperes (VA). Notably, the angle of the complex power equates to the...
Complex power is defined as the multiplication of the voltage and the complex conjugate of the current. The magnitude of this power, known as apparent power, is measured in volt-amperes (VA). Notably, the angle of the complex power equates to the...
933
Complexation Equilibria: Factors Influencing Stability of Complexes
871
In complexation reactions, metal cations are the electron pair acceptors, and the ligands are the electron pair donors. The stability of the metal complexes depends primarily on the complexing ability of the central metal ion and the nature of the ligands. Generally, the complexing ability of the metal ion depends on the size and charge of the ion. As the metal ion size increases, the stability of the metal complexes decreases, provided that the valency of the metal ion and the ligands remain...
871

