I Wayan Eka Satriawibawa, I Made Arimbawa, Ketut Ariawati, Ida Bagus Gede Suparyatha, I Gusti Ngurah Sanjaya Putra, I Nyoman Budi Hartawan
{"title":"Serum iron is negatively correlated with the HbA1c level in children and adolescents with type 1 diabetes mellitus.","authors":"I Wayan Eka Satriawibawa, I Made Arimbawa, Ketut Ariawati, Ida Bagus Gede Suparyatha, I Gusti Ngurah Sanjaya Putra, I Nyoman Budi Hartawan","doi":"10.1297/cpe.2022-0012","DOIUrl":"https://doi.org/10.1297/cpe.2022-0012","url":null,"abstract":"<p><p>Although mainly affected by the blood glucose levels, the level of HbA1c could be influenced by other important factors, such as an iron deficiency, which is commonly found in children with type 1 diabetes mellitus (T1DM). However, a clinical judgment could not be established, as previous studies still reported conflicting results and lack of data regarding Indonesia. We aimed to evaluate the correlation between the serum iron and HbA1c levels in children with T1DM. This single-center cross-sectional study was conducted from February to October 2020 at Sanglah Hospital, Bali, Indonesia. Patients aged 1-18 yr were included in this study. The HbA1c and serum iron levels were evaluated in the blood samples. Spearman and partial correlation analyses were used to analyze the correlations between variables. The statistical significance was set at <i>P</i> < 0.05. Thirty-three subjects were analyzed, with a mean age of 11.24 ± 3.76 yr. Low serum iron and poor glycemic index were found in 54.5% and 69.7% of the subjects, respectively. Spearman correlation analysis revealed a low negative correlation between the serum iron and HbA1c levels (Spearman's rho = -0.376, <i>P</i> = 0.031). A partial correlation showed a moderate negative correlation (r = -0.473, <i>P</i> = 0.013) after adjusting for confounding variables. This study found a moderate negative correlation between the serum iron and HbA1c level in children and adolescents with T1DM.</p>","PeriodicalId":10678,"journal":{"name":"Clinical Pediatric Endocrinology","volume":"31 4","pages":"242-249"},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/c3/0c/cpe-31-242.PMC9637419.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40714822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Genetic causes of central precocious puberty.","authors":"Toshihiro Tajima","doi":"10.1297/cpe.2022-0021","DOIUrl":"https://doi.org/10.1297/cpe.2022-0021","url":null,"abstract":"<p><p>Central precocious puberty (CPP) is a condition in which the hypothalamus-pituitary-gonadal system is activated earlier than the normal developmental stage. The etiology includes organic lesions in the brain; however, in the case of idiopathic diseases, environmental and/or genetic factors are involved in the development of CPP. A genetic abnormality in <i>KISS1R</i>, that encodes the kisspeptin receptor, was first reported in 2008 as a cause of idiopathic CPP. Furthermore, genetic alterations in <i>KISS1</i>, <i>MKRN3</i>, <i>DLK1</i>, and <i>PROKR2</i> have been reported in idiopathic and/or familial CPP. Of these, <i>MKRN3</i> has the highest frequency of pathological variants associated with CPP worldwide; but, abnormalities in <i>MKRN3</i> are rare in patients in East Asia, including Japan. <i>MKRN3</i> and <i>DLK1</i> are maternal imprinting genes; thus, CPP develops when a pathological variant is inherited from the father. The mechanism of CPP due to defects in <i>MKRN3</i> and <i>DLK1</i> has not been completely clarified, but it is suggested that both may negatively control the progression of puberty. CPP due to such a single gene abnormality is extremely rare, but it is important to understand the mechanisms of puberty and reproduction. A further development in the genetics of CPP is expected in the future.</p>","PeriodicalId":10678,"journal":{"name":"Clinical Pediatric Endocrinology","volume":"31 3","pages":"101-109"},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/74/4c/cpe-31-101.PMC9297165.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40694814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Partial nephrogenic diabetes insipidus with a novel arginine vasopressin receptor 2 gene variant.","authors":"Atsushi Ishida, Haruo Mizuno, Kohei Aoyama, Shiori Sasaki, Yutaka Negishi, Takeshi Arakawa, Takayasu Mori","doi":"10.1297/cpe.2021-0029","DOIUrl":"https://doi.org/10.1297/cpe.2021-0029","url":null,"abstract":"<p><p>X-linked nephrogenic diabetes insipidus (NDI) is caused by variations in arginine vasopressin receptor 2 (<i>AVPR2</i>). Some patients show partial resistance to arginine vasopressin (AVP). A 19-month-old Japanese boy presented with polydipsia since infancy. His mother had a history of polydipsia during pregnancy, and his maternal granduncle also had polydipsia. Intermediate urine osmolality and markedly high plasma AVP levels were observed in the water deprivation test. Subsequent pitressin administration caused no further elevation in urine osmolality. We diagnosed the patient with partial NDI, initiated therapy with hydrochlorothiazide, and placed him on a low-sodium diet. Although his urine volume decreased by 20-30% after the initiation of therapy, progressive hydronephrosis and growth retardation developed 2 years later. We investigated his genetic background by multiplex targeted sequencing of genes associated with inherited renal diseases, including <i>AVPR2</i> and aquaporin-2 (<i>AQP2</i>). We identified a hemizygous missense variant in <i>AVPR2</i> NM_000054:c.371A>G,p.(Tyr124Cys) in the boy and a heterozygous variant in the mother at the same locus. Distinguishing partial NDI from primary polydipsia is difficult because of its mild symptoms. Markedly elevated plasma AVP levels with intermediate urine osmolality may suggest partial NDI, and genetic analysis can be useful for such patients.</p>","PeriodicalId":10678,"journal":{"name":"Clinical Pediatric Endocrinology","volume":"31 1","pages":"44-49"},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/19/88/cpe-31-044.PMC8713061.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39660864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Urinary stone in a 12-year-old adolescent with new-onset type 1 diabetes and diabetic ketoacidosis.","authors":"Kikumi Ushijima-Fuchino, Yuko Koga, Satoko Umino, Junko Nishioka, Junichiro Araki, Shuichi Yatsuga, Yushiro Yamashita","doi":"10.1297/cpe.2021-0069","DOIUrl":"https://doi.org/10.1297/cpe.2021-0069","url":null,"abstract":"<p><p>Dehydration and acidosis increase the risk for urinary stone formation. Urinary stones have been reported in three pediatric cases of diabetic ketoacidosis (DKA). A 24-h urine collection was performed for two of the three children. One patient had high urine sodium levels, while the other had low urine citrate excretion. We report the case of a 12-yr-old adolescent boy with urinary stones, new-onset type 1 diabetes mellitus (T1D), and DKA, excluding other metabolic disorders. After DKA was diagnosed, the patient received a 0.9% saline bolus and continuous insulin infusion. Hyperglycemia and ketoacidosis were well-controlled on the third day after admission. However, the patient developed abdominal pain radiating to the back. Urinary stones were suspected, and a urinalysis was performed. The patient's urine revealed significant elevation in red blood cells and calcium oxalate crystals. Computed tomography revealed a high-density left ureteric mass, suggestive of a urinary stone. Although both the previously reported pediatric cases involved metabolic diseases, additional tests in this patient excluded metabolic diseases other than T1D. DKA may be related to the formation of calcium oxalate crystals owing to dehydration and acidosis. Therefore, physicians should consider urinary stone formation in DKA patients.</p>","PeriodicalId":10678,"journal":{"name":"Clinical Pediatric Endocrinology","volume":"31 3","pages":"199-204"},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/d4/95/cpe-31-199.PMC9297177.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40694819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A novel <i>COL1A1</i> deletion/insertion pathogenic variant in a patient with osteogenesis imperfecta.","authors":"Chieko Yamada, Takuo Kubota, Takeshi Ishimi, Shinji Takeyari, Kenichi Yamamoto, Hirofumi Nakayama, Yasuhisa Ohata, Makoto Fujiwara, Taichi Kitaoka, Keiichi Ozono","doi":"10.1297/cpe.2022-0027","DOIUrl":"https://doi.org/10.1297/cpe.2022-0027","url":null,"abstract":"Chieko Yamada1, Takuo Kubota1, Takeshi Ishimi1, Shinji Takeyari1, Kenichi Yamamoto1, 2, Hirofumi Nakayama1, Yasuhisa Ohata1, Makoto Fujiwara1, 3, Taichi Kitaoka1, and Keiichi Ozono1 1Department of Pediatrics, Osaka University Graduate School of Medicine, Osaka, Japan 2Department of Statistical Genetics, Osaka University Graduate School of Medicine, Osaka, Japan 3The 1st. Department of Oral and Maxillofacial Surgery, Osaka University Graduate School of Dentistry, Osaka, Japan","PeriodicalId":10678,"journal":{"name":"Clinical Pediatric Endocrinology","volume":"31 3","pages":"205-208"},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/4e/67/cpe-31-205.PMC9297176.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40694820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Transient central diabetes insipidus after cranioplasty for craniosynostosis in an infant with septo-optic dysplasia.","authors":"Takahiro Fukuyama, Takeshi Sato, Satsuki Nakano, Kentaro Tomita, Yoshiaki Sakamoto, Tomoru Miwa, Junpei Hamada, Natsuko Futagawa, Kosei Hasegawa, Tomohiro Ishii, Tomonobu Hasegawa","doi":"10.1297/cpe.2021-0036","DOIUrl":"https://doi.org/10.1297/cpe.2021-0036","url":null,"abstract":"Takahiro Fukuyama1, Takeshi Sato1, Satsuki Nakano1, Kentaro Tomita1, Yoshiaki Sakamoto2, Tomoru Miwa3, Junpei Hamada4, Natsuko Futagawa5, Kosei Hasegawa5, Tomohiro Ishii1, and Tomonobu Hasegawa1 1Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan 2Department of Plastic and Reconstructive Surgery, Keio University School of Medicine, Tokyo, Japan 3Department of Neurosurgery, Keio University School of Medicine, Tokyo, Japan 4Department of Pediatrics, Ehime University Graduate School of Medicine, Ehime, Japan 5Department of Pediatrics, Okayama University Hospital, Okayama, Japan","PeriodicalId":10678,"journal":{"name":"Clinical Pediatric Endocrinology","volume":"31 1","pages":"50-53"},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/d6/e1/cpe-31-050.PMC8713060.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39676469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Higher serum thyroid autoantibody value is a risk factor of hypothyroidism in children and young adults with chronic thyroiditis.","authors":"Kazuhiro Shimura, Kanako Yoshizaki, Yukihiro Hasegawa","doi":"10.1297/cpe.2022-0002","DOIUrl":"https://doi.org/10.1297/cpe.2022-0002","url":null,"abstract":"<p><p>Thyroid function in patients with chronic thyroiditis (CT) varies depending on the clinical course. Serum antithyroglobulin antibody (TgAb) and antithyroid peroxidase antibody (TPOAb) levels may be used to predict hypothyroidism in CT. In this retrospective cohort study, patients with CT, defined as having a high TgAb or TPOAb value, were divided into a hypothyroid group (HG) and euthyroid group (EG), after a mean follow-up of 2.5 years. The definitions of the two groups was based on the maximum TSH value from the initial measurement to the most recent follow-up: HG was defined as TSH 10.0 μIU/mL or higher, and EG was defined as TSH < 10.0 μIU/mL. There were 20 and 113 patients in the HG and EG, respectively. There were no significant differences in age, sex, underlying diseases, or TgAb and TPOAb levels between the groups. Receiver operating characteristic curve analyses of TgAb and TPOAb values for predicting thyroid function showed areas under the curve of 0.714 and 0.757, respectively. The value with the highest diagnostic accuracy was 106 IU/mL for TgAb and 16 IU/mL for TPOAb. Thus, TgAb > 106 IU/mL and TPOAb > 16 IU/mL may predict hypothyroidism in children and young adults with CT.</p>","PeriodicalId":10678,"journal":{"name":"Clinical Pediatric Endocrinology","volume":"31 3","pages":"152-158"},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/d6/e8/cpe-31-152.PMC9297167.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40583171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Histological analysis of testes in patients with 5 alpha-reductase deficiency type 2: Comparison with cryptorchid testes in patients without endocrinological abnormalities and a review of the literature.","authors":"Tamaki Wada, Chihiro Ichikawa, Makoto Takeuchi, Futoshi Matsui, Fumi Matsumoto, Shinobu Ida, Yuri Etani, Masanobu Kawai","doi":"10.1297/cpe.2022-0025","DOIUrl":"https://doi.org/10.1297/cpe.2022-0025","url":null,"abstract":"<p><p>As evidenced by the intact histology of the testes during infancy, testicular differentiation during the prenatal period occurs normally in individuals with 5 alpha-reductase type 2 deficiency (5αRD); however, a majority of these individuals suffer from azoospermia or oligospermia during adulthood, indicating that impaired spermatogenesis occurs postnatally. Although the accompanying cryptorchidism may be partly responsible for this process, the underlying mechanisms remain largely unknown. To address this issue, we retrospectively compared the histological findings of descended testes in a 3-mo-old patient and undescended testes in an 18-yr-old patient with 5αRD. In the latter, testicular histology was compared to that of cryptorchid testes obtained from five adolescent patients without endocrinological abnormalities. Histological findings of a 3-mo-old patient revealed normal number of germ cells with intact seminiferous tubules. In contrast, an 18-yr-old patient showed marked reduction in germ cell number and atrophic seminiferous tubules. The findings were very similar to those observed in cryptorchid testes without endocrinological abnormalities. These findings suggest that the decrease in germ cells in 5αRD patients may be at least partly caused by accompanying cryptorchidism. As the number of germ cells did not decrease during the infantile period, early orchiopexy is recommended to prevent a decrease in germ cell number and preserve fertility.</p>","PeriodicalId":10678,"journal":{"name":"Clinical Pediatric Endocrinology","volume":"31 3","pages":"144-151"},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/08/79/cpe-31-144.PMC9297171.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40583172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Clinical guidelines for the diagnosis and treatment of 21-hydroxylase deficiency (2021 revision).","authors":"Tomohiro Ishii, Kenichi Kashimada, Naoko Amano, Kei Takasawa, Akari Nakamura-Utsunomiya, Shuichi Yatsuga, Tokuo Mukai, Shinobu Ida, Mitsuhisa Isobe, Masaru Fukushi, Hiroyuki Satoh, Kaoru Yoshino, Michio Otsuki, Takuyuki Katabami, Toshihiro Tajima","doi":"10.1297/cpe.2022-0009","DOIUrl":"https://doi.org/10.1297/cpe.2022-0009","url":null,"abstract":"<p><p>Congenital adrenal hyperplasia is a category of disorders characterized by impaired adrenocortical steroidogenesis. The most frequent disorder of congenital adrenal hyperplasia is 21-hydroxylase deficiency, which is caused by pathogenic variants of <i>CAY21A2</i> and is prevalent between 1 in 18,000 and 20,000 in Japan. The clinical guidelines for 21-hydroxylase deficiency in Japan have been revised twice since a diagnostic handbook in Japan was published in 1989. On behalf of the Japanese Society for Pediatric Endocrinology, the Japanese Society for Mass Screening, the Japanese Society for Urology, and the Japan Endocrine Society, the working committee updated the guidelines for the diagnosis and treatment of 21-hydroxylase deficiency published in 2014, based on recent evidence and knowledge related to this disorder. The recommendations in the updated guidelines can be applied in clinical practice considering the risks and benefits to each patient.</p>","PeriodicalId":10678,"journal":{"name":"Clinical Pediatric Endocrinology","volume":"31 3","pages":"116-143"},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/cb/97/cpe-31-116.PMC9297175.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40583173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"11-Oxyandrogens from the viewpoint of pediatric endocrinology.","authors":"Maki Fukami","doi":"10.1297/cpe.2022-0029","DOIUrl":"https://doi.org/10.1297/cpe.2022-0029","url":null,"abstract":"<p><p>11-Oxyandrogens, such as 11-ketotestosterone (11-KT), 11-ketodihydrotestosterone (11-KDHT), 11β-hydroxytestosterone (11-OHT), 11β-hydroxyandrostenedione (11-OHA4), and 11-KA4, are newly specified human androgens. These 11-oxyandrogens are present in the cord blood and placenta, as well as in the blood of men and women of various ages, and are produced primarily in the adrenal gland. Accumulating evidence suggests that these steroids contribute to androgen excess in patients with 21-hydroxylase deficiency or polycystic ovary syndrome. More importantly, unlike classic androgens, 11-oxyandrogens produced in maternal tumors can pass through the placenta without being converted into estrogens, and cause severe virilization of female fetuses. Thus, overproduction of 11-oxyandrogens represents a new mechanism of 46,XX disorders of sex development. On the other hand, the physiological roles of 11-oxyandrogens remain to be clarified. This mini-review introduces the current understanding of 11-oxyandrogens, from the perspective of pediatric endocrinology.</p>","PeriodicalId":10678,"journal":{"name":"Clinical Pediatric Endocrinology","volume":"31 3","pages":"110-115"},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/6d/12/cpe-31-110.PMC9297174.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40671783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}