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BACKGROUND The recent discovery of neural stem cells in the sacrococcygeal end of the filum terminale, the presence of remnants of the most powerful toti-potent stem cell generators and inductors, the primitive streak and node, the existence of the unique non-mutator sacrococcygeal teratomas, and the recent disclosing of neuroimmunomodulatory and hematopoietic roles of Luschka's body, indicate that the sacrococcygeal region is a distinctive anatomic environment rich in stem cells and instructive signals, and that the coccygeal body may constitute a more complex entity than a mere caudal, vascularly-derived glomic anastomosis. Ascribed as an arterial-venous shunt located at the tip of the coccyx and analog to the glomera caudalia in other vertebrates, the glomus coccygeum has recently revealed a complex organ with peculiar 3D topology, broad innervation, catecholamine-synthesizing activity, and neutrophil-formation and lymphopoietic-regulating properties. METHODS In the present research work, we sought to start exploring the potential cell-functional roles of the glomus coccygeum by conducting a methodical assessment of the expression of Notch pathway receptors and ligands in the human Luschka's body. RESULTS Our data indicates that Notch receptors are dynamically and distinctively expressed in the coccygeal body and that Notch ligands are markedly differentially expressed in newborn and adult coccygeal glomi. CONCLUSIONS Our observations suggest that Notch signaling may have relevant roles in glomus coccygeum function and biology.OBJECTIVE Neuroendocrine tumors of the pancreas (Pan-NETs) are rare, but among the most common neuroendocrine neoplasias. They are mostly slowly growing with a capacity to metastasize, but transition to a higher grade occurs, which lead to a more aggressive tumor phenotype. Very seldom, non-functional tumors can become hormonally active. Here we present four patients with originally non-functional Pan-NETs that subsequently started to produce insulin or its precursors, causing severe hypoglycemia. METHODS We reviewed the medical files, biochemistry and radiological investigations. Pathology tissue samples were re-examined, and additional immunohistochemical analyses were performed. RESULTS Four patients; three women and one man, aged 51, 61, 65 and 68 years at diagnosis developed malignant insulinomas 2, 5, 6 and 7 years respectively after initial diagnosis of non-secreting Pan-NETs. They had all metastatic disease at diagnosis. Ki-67 was initially 2, 5 and 6% and progressed to 25, 17 and 45%, respectively. In one patient the initial Ki-67 was 5% but was not reexamined. All four patients died due to their cancer disease within 12, 6, 19 and 29 months after treatment for hypoglycemia commenced. The clinical profile and/or review of the histopathology confirmed all original lesions as non-functional Pan-NETs with subsequent transformation into insulin-producing tumors. CONCLUSIONS Non-functional, metastatic Pan-NETs may transform to insulin secreting lesions, with negative impact on prognosis. Therefore, if symptoms as hypoglycemia develops continuous follow-up of clinical parameters, biochemical profiles of pancreatic hormones and histopathological evaluation of proliferation is suggested to detect changes in characteristics of these malignant neoplasms.BACKGROUND Deletion of the long (q) arm of chromosome 18 causes a rare genetic disease termed 18q- syndrome. This syndrome has varying clinical presentation, depending on the extent of the deletion and the percentage of cells with abnormal chromosomes. One of the most common disorders in children affected by the disease is short stature, usually associated with growth hormone deficiency. [https://www.selleckchem.com/products/fti-277-hcl.html FTI 277 purchase] Numerous reports on patients with 18q- syndrome show growth hormone treatment has significant therapeutic benefits, not only in terms of final body height but also cognitive functions and psychosocial development. CASE PRESENTATION Here we describe the case of a 10-year-old girl with 18q- syndrome treated with recombinant human growth hormone from the age of 2. This is the first report of such a patient in Poland. After 8 years of observation, the child showed a clear benefit from recombinant human growth hormone treatment in terms of height and possibly mental development. The girl remains under cardiac care due to congenital heart disease and under neurological care for epilepsy. CONCLUSIONS This case indicates the need for early diagnosis and multidisciplinary action to achieve satisfactory quality of life in patients with 18q- syndrome.Here we present the case of a 50-year-old woman with acute urinary retention who was treated by the insertion of a permanent catheter. For associated headaches, fever and muscle and joint pain, the patient underwent neurologic examination, including lumbar puncture and magnetic resonance of head and spine. The results confirmed aseptic meningitis. Subsequently, the patient was hospitalized at the infectious disease clinic, where the permanent catheter was extracted after 5 days, with spontaneous micturition recovery and no post-void residual volume. The combination of aseptic meningitis and urinary retention is called meningitis-retention syndrome. This is a rare disease, which has been described only a few times in the literature.Diffuse leptomeningeal glioneuronal tumor (DLGNT) is a new central nervous system tumor defined by the WHO in 2016 characterized mainly by hydrocephalus, headache, and epilepsy. We reported the case of a patient diagnosed with DLGNT who presented with language developmental delay and positive but subtle changes in imaging two years before the emergence of typical clinical symptoms. Few studies were conducted on early tumor symptoms due to the limited number of cases. We hypothesized that with the existence of pre-tumor symptoms, language developmental delay may be related to tumor.Riboflavin (vitamin B2 ) is an indispensable nutrient for humans and animals, since it is the precursor of the essential coenzymes flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD), involved in variety of metabolic reactions. Riboflavin is produced on commercial scale and is used for feed and food fortification purposes, and in medicine. Until recently, the mutant strains of the flavinogenic yeast Candida famata were used in industry for riboflavin production. Guanosine triphosphate is the immediate precursor of riboflavin synthesis. Therefore, the activation of metabolic flux toward purine nucleotide biosynthesis is a promising approach to improve riboflavin production. The phosphoribosyl pyrophosphate synthetase and phosphoribosyl pyrophosphate amidotransferase are the rate limiting enzymes in purine biosynthesis. Corresponding genes PRS3 and ADE4 from yeast Debaryomyces hansenii are modified to avoid feedback inhibition and cooverexpressed on the background of a previously constructed riboflavin overproducing strain of C.