Sweat glands are widely distributed in human skin, among which eccrine sweat glands play major roles in heat dissipation and sweat secretion. Sweat secretion is mainly regulated by nervous system and includes two processes of secretion of secretory coil and reabsorption of sweat duct, involving various ion channels and proteins such as calcium ion channel, potassium ion channel, sodium-potassium-chloride co-transporter 1, Best2 protein, aquaporin 5, cystic fibrosis transmembrane conductance regulator, and epithelial sodium ion channel. This paper reviews the nerve conduction system and various ion channels involved in sweat secretion of exocrine sweat glands in order to provide a theoretical basis for the study of regeneration, repair, and transformation of stem cells.
Eccrine Glands/metabolism* ; Humans ; Sweat/metabolism*

The damage of sweat glands in patients with extensive deep burns results in the loss of thermoregulation, which seriously affects the quality of life of patients. At present, there are many researches on the repair of sweat gland function, but the mechanism of human sweat gland development has not been fully clarified. More and more studies have shown that the cascaded pathways of Wnt/β-catenin, ecto- dysplasin A/ectodysplasin A receptor/nuclear factor-κB, sonic hedgehog, and forkhead box transcription factor jointly affect the development of sweat glands, and it has been reported that the cascaded signaling pathways can be used to achieve the reconstruction of sweat adenoid cells in vitro. This article reviews the signaling pathways that affect the development of sweat glands and their involvement in the reconstruction of sweat adenoid cells in vitro.
Adenoids/metabolism* ; Hedgehog Proteins/metabolism* ; Humans ; Quality of Life ; Signal Transduction ; Sweat/metabolism* ; Sweat Glands/physiology*

Sweat gland is one of the important appendage organs of the skin, which plays an important role in thermoregulation and homeostasis maintenance. Sweat glands are damaged and unable to self-repair after burns, resulting in perspiration disorders eventually. However, current clinical strategies cannot restore the function of the damaged sweat glands effectively. Therefore, it is urgent to seek treatments that can promote the regeneration of sweat glands and restore their normal functions. Stem cells have extensive sources, low immunogenicity, high proliferation capacity, and multi-directional differentiation potential, which have become a focus in the field of regenerative medicine. In recent years, a variety of stem cells have been induced to differentiate into sweat gland-like tissue with certain secretory function, which provides treatment direction for sweat gland regeneration after burns in clinic. This article reviews the recent research advances on the application of stem cells in sweat gland regeneration from the perspectives of the manner by which stem cells transform into sweat gland cells in different environments and their influencing factors.
Cell Differentiation/physiology* ; Regeneration/physiology* ; Skin ; Stem Cells ; Sweat Glands/physiology*

Breast Neoplasms ; Female ; Humans ; Paget Disease, Extramammary/surgery* ; Sweat Gland Neoplasms ; Vulvar Neoplasms/surgery*

Introduction: Syringocystadenoma papilliferum (SCAP) is a relatively rare benign adnexal skin tumor which can manifest in a variety of clinical forms. Nearly one-third of cases are known to develop within a pre-existing nevus sebaceus (NS). The peculiar feature of this case was the appearance of a large exophytic tumor within a congenital verrucous plaque, which raised the suspicion of a malignant transformation. This is a case of a young Filipino adult with an unusual presentation of syringocystad- enoma papilliferum in a nevus sebaceus mimicking squamous cell carcinoma. Case report: A 27-year-old Filipino female presented a persistently enlarging exophytic pedunculated cribriform tumor within a congenital verrucous plaque on the left temporal area. The tumor started to appear when she was 20 years old. One month prior to consult, it rapidly increased in size and bled on gentle manipulation. She has neither comorbidities nor any family history of a similar condition. Her physical examination was normal, with no palpable lymphadenopathies. The biopsy showed syringo- cystadenoma papilliferum on a nevus sebaceus. She underwent carbon dioxide (CO2 ) laser excision under local anesthesia. The procedure was uneventful and the patient is on regular follow-up and close monitoring for any possible malignant change or recurrence. Conclusion A case of syringocystadenoma papilliferum on a nevus sebaceus mimicking squamous cell carcinoma in a Filipino female treated with carbon dioxide laser excision was presented. The unusual presentation of SCAP can mimic malignancy and histopathologic evaluation is warranted to rule out malignant transformation for proper management.
Tubular Sweat Gland Adenomas

Eccrine porocarcinoma is a rare malignant tumor arising from the intraepidermal ductal portion of the eccrine sweat gland. It develops either spontaneously or from a long standing benign eccrine poroma. This entity usually affects older people and is commonly located on the lower extremities, the trunk, and the head. We report a case of eccrine porocarcinoma on the left cheek in an 85-year-old male. In our case, the tumor was treated with wide excision and postoperative adjuvant radiation therapy. The patient recovered well without local recurrence and distant metastasis during the 14-month follow-up period. Wide excision and postoperative adjuvant radiation therapy can be considered as a safe and effective treatment option in treating patients with eccrine porocarcinoma.
Aged, 80 and over ; Cheek ; Eccrine Porocarcinoma ; Follow-Up Studies ; Head ; Humans ; Lower Extremity ; Male ; Neoplasm Metastasis ; Poroma ; Radiotherapy, Adjuvant ; Recurrence ; Sweat Gland Neoplasms ; Sweat Glands

Anhidrotic ectodermal dysplasia (AED) is a rare hereditary disorder with a triad of sparse hair, dental hypoplasia, and anhidrosis. Here we report a case of AED with food allergy and atopic eczema. The patient was a 11-month-old boy admitted to our hospital with pyrexia for 2 weeks. He presented with a history of dry skin, eczema, and food allergy to egg. On clinical examination, his body temperature was 38.8°C, with dry skin and eczema almost all over the body, sparse eyebrows, and scalp hair. Laboratory investigations and physical examination did not show any evidence of infection. Radioallergosorbent test was positive to egg yolk, egg white, ovomucoid, milk, house dust, and house dust mite. As the child did not sweat despite the high fever, we performed the sweat test which revealed a total lack of sweat glands. Genetic examination revealed a mutation of the EDA gene and he was diagnosed as AED. His pyrexia improved upon cooling with ice and fan. His mother had lost 8 teeth and her sweat test demonstrated low sweating, suggestive of her being a carrier of AED. Atopy and immune deficiencies have been shown to have a higher prevalence in patients with AED. Disruption of the skin barrier in patients with AED make them more prone to allergic diseases such as atopic eczema, bronchial asthma, allergic rhinitis and food allergy. Careful assessment of the familial history is essential to differentiate AED when examining patients with pyrexia of unknown origin and comorbid allergic diseases.
Asthma ; Body Temperature ; Child ; Dermatitis, Atopic ; Dust ; Ectodermal Dysplasia ; Eczema ; Egg White ; Egg Yolk ; Eyebrows ; Fever ; Food Hypersensitivity ; Hair ; Humans ; Hypohidrosis ; Ice ; Infant ; Male ; Milk ; Mothers ; Ovomucin ; Ovum ; Physical Examination ; Prevalence ; Pyroglyphidae ; Radioallergosorbent Test ; Rhinitis, Allergic ; Scalp ; Skin ; Sweat ; Sweat Glands ; Sweating ; Tooth

Syringocystadenocarcinoma papilliferum (SCACP) is a rare malignant adnexal neoplasm, which is considered as a malignant counterpart of syringocystadenoma papilliferum (SCAP). Clinically, SCACP appears as a nodule, inflammatory plaque, or tumor. The lesion is usually covered with crusts, which are formed by secretion of the apocrine epithelial cells. Histologically, SCACP resembles SCAP, with cystic papillomatous invaginations connected to the skin surface by funnel-shaped structures lined by infundibular epithelium. The stroma of the tumor consists of a dense inflammatory infiltrate of plasma cells and lymphocytes. SCACP differs from SCAP in terms of the architectural and cytological features of the tumor cells, and is characterized by higher nuclear cytoplasmic ratio, nuclear irregularity, coarse chromatin, and increased mitotic activity. However, the immunohistochemical findings of SCACP vary. Since only 49 cases of SCACP have been reported in the English literature, the clinical and histologic characteristics of SCACP have not been fully established. Further studies on the diagnostic criteria for SCACP are warranted. Here, we report a rare case of SCACP and present a review of other relevant literature.
Chromatin ; Cytoplasm ; Epithelial Cells ; Epithelium ; Lymphocytes ; Plasma Cells ; Skin ; Sweat Gland Neoplasms

PURPOSE: To determine impacts of symptom clusters, performance and emotional status on the quality of life of gynecologic cancer patients. METHODS: Subjects completed questionnaires consisting of four measurements: symptom cluster, performance and emotional status, and the quality of life. A total of 104 completed data sets were analyzed by descriptive statistics, t-test, ANOVA, Pearson's correlation coefficient, and a multiple regression analysis using the SPSS 21.0 program. RESULTS: Fatigue was identified as the most prevalent symptom (77.9%) and sweating (2.08) as the most severe and uncomfortable symptom (1.80). Six symptom clusters, performance status, anxiety and depression were negatively correlated with quality of life. Four symptom clusters were positively correlated with performance status, and six symptom clusters were positively correlated with anxiety and depression. Factors affecting quality of life were abdominal discomfort cluster (β=−0.23, p=0.005), performance status (β=−0.20, p=0.020), and depression (β=−0.42, p < 0.001). The model was statistically significant explaining 42.5% of variance (F=26.369, p < 0.001). CONCLUSION: The findings supported that symptom clusters and depression negatively influence the quality of life and need to be addressed as we are caring for patients and promoting quality of life.
Anxiety ; Dataset ; Depression ; Fatigue ; Humans ; Quality of Life ; Sweat ; Sweating

Transient acantholytic dermatosis, or Grover's disease, usually appears as pruritic erythematous papules and vesicles on the trunk in middle-aged men. The pathogenesis remains unclear, though sun exposure, heat, and sweating may be aggravating factors. A 58-year-old male visited our clinic for evaluation of an asymptomatic erythematous patch on the left temple that developed 40 years ago. Here, we report the rare case of Grover's disease with atypical features presenting as one large patch on the face.
Acantholysis ; Hot Temperature ; Humans ; Male ; Middle Aged ; Skin Diseases ; Solar System ; Sweat ; Sweating