Serum Parathyroid Hormone Levels Research Articles

Health literacy in chronic kidney disease patients: association with self-reported presence of acquaintance with kidney disease, disease burden and frequent contact with health care provider.

Limited data suggest that health literacy (HL) is associated with kidney functions and clinical outcomes in patients with non-dialysis chronic kidney disease (CKD). We aimed to identify factors associated with the level of HL in a CKD population that has not been studied previously. Patients with stage I-V (non-dialysis) CKD according to the Kidney Disease Outcomes Quality Initiative classification were enrolled in the study from two tertiary healthcare centers. Data were collected cross-sectionally using the European Health Literacy Survey (HLS-EU). Data of 208 participants were analyzed. HLS-EU scores had the highest correlations with age (r = -0.494, p = 0.0001) and education (r = 0.476, p = 0.0001). Estimated glomerular filtration rate (e-GFR) was significantly correlated with HLS-EU score (r = 0.186, p = 0.01). Presence of a self-reported acquaintance with any kind of kidney disease was associated with higher HL. On the other hand, participants with multiple comorbidities, and therefore with more frequent contact with the health system, had lower HL than those without such frequent contact. Similarly, those with a high disease burden had lower HL than those without. HLS-EU scores were also significantly associated with gender, marital status, occupational status, self-perception of health, restriction of daily activities, participation in social activities, place of residence, blood pressure, body mass index, and serum parathyroid hormone and albumin levels. Low HL is prevalent among CKD patients and is associated with e-GFR. Presence of an acquaintance with any kind of kidney disease is positively associated with HL. Presence of multiple comorbidities might be a limiting factor for the improvement of HL, which might also be expected to improve as a result of frequent contact with healthcare providers.

Serum Concentration of Vitamin D in Patients with Vulgar Psoriasis

Introduction: Psoriasis is a chronic, inflammatory systematic disease that primarily affects the skin. Various factors influence the disease outcome and severity, among which the influence of vitamin D serum levels could potentially be important for disease pathogenesis and therapeutic strategies. Aim: To analyze vitamin D serum levels in patients with psoriasis in comparison to healthy individuals, together with markers of inflammation and disease severity. Methods: The study included patients with psoriasis that formed the case group, while the control group consisted of healthy individuals. The investigated features were demographical data, body mass index (BMI), disease severity, vitamin D serum levels, inflammatory markers, and parathyroid hormone (PTH) levels. Results: The study included 112 participants, 60 in the case group and 52 in the control group with the median age of 49 years. Physical activity was higher in the control group, while the body mass and the BMI were higher in the case group. Participants’ BMI negatively correlated to vitamin D serum levels, as well as C-reactive protein values in the control group and PTH in the case group. There was no significant difference in nicotine and alcohol consumption, sun exposure or vitamin D levels between the two groups. Conclusion: Both groups presented with vitamin D serum levels in the deficiency range. The seasons of the year and the participants’ BMI affected vitamin D status. Vitamin D levels were equally distributed between the groups without influence on disease severity.

Prevalence of Renal Osteodystrophy and its Related Factors among End-stage Renal Disease Patients Undergoing Hemodialysis: Report from Imam Reza Referral Hospital of Medical University of Kermanshah, Iran.

ObjectivesWe sought to determine the prevalence of renal osteodystrophy (ROD) and its related factors in a group consisting of end-stage renal disease (ESRD) patients undergoing maintenance hemodialysis.MethodsA total of 128 ESRD patients (52 men and 76 women) with a mean age of 59.3 years undergoing maintenance hemodialysis at Imam Reza Referral Hospital, Iran were included in this cross-sectional study. We measured serum parathyroid hormone (PTH) levels and determined 150 to 300 pg/mL as the desirable range for the values. Values lower or higher than this range were used to determine ROD. Furthermore, this study investigated the association of ROD with clinical and laboratory variables (age at the onset of renal failure, hemodialysis sessions per week, clinical symptoms associated with ROD, and serum calcium and phosphate levels).ResultsROD was diagnosed in 93 (72.7%) out of 128 patients studied. Of them, 53 (41.4%) patients had PTH levels above 300 pg/mL (high bone turnover, HTO group) and 40 patients (31.3%) had PTH levels below 150 pg/mL (low bone turnover, LTO group). No statistically significant difference was detected in terms of ROD-related clinical findings (p = 0.110), age at the time of ESRD diagnosis (p = 0.200), and the number of hemodialysis sessions per week (p = 0.200). Hyperphosphatemia was more prevalent in the ROD group (n = 52, 57.1%) compared with 11 patients (31.4%) included in the group without ROD (p = 0.004).ConclusionsThe prevalence rate of ROD in this study was significant, and it was largely consistent with the rate reported in some Asian countries. Hyperphosphatemia were laboratory variables closely related to ROD.

Is Chronic Varicocele a Risk Factor for Secondary Hyperparathyroidism?

Objective: To assess whether varicocele affects testicular 25-hydroxylase activity. Methods: Twenty normozoospermic patients with bilateral varicocele (grade III according to the Dubin and Amelar classification) without indications to undergo varicocele repair (normal sperm parameters and testicular volume; no scrotal pain) were consecutively enrolled and followed-up for four years. Serum levels of parathyroid hormone (PTH), calcium, and 25-hydroxy-cholecalciferol [25(OH)D] along with serum luteinizing hormone (LH), follicle-stimulating hormone (FSH), total testosterone (TT), conventional sperm parameters, sperm DNA fragmentation (SDF) rate, and testicular volume (TV) were measured annually for three years. PTH, calcium, and 25(OH)D serum levels over time were compared with those of age- and body mass index (BMI)-matched control group of twenty varicocelectomized patients. Main results: Both intra- and between-group analyses showed that serum PTH levels increased significantly over time in parallel with a significant decline in 25(OH)D levels. Serum calcium levels did not change significantly. At the same time, signs of mild Leydig and Sertoli cell dysfunction were found, such as an increase in gonadotropins and decreased TT and VT. However, conventional sperm parameters and SDF rate did not change significantly. Conclusion: This prospective controlled study provides the first evidence of a negative impact of bilateral grade III varicocele on testicular 25-hydroxylase activity. Accordingly, the patients included in this study showed a significant increase in PTH and a decrease in 25(OH)D levels over time. Patients with varicocele deserve endocrinologic counseling.

Doctor-led intensive diet education on health-related quality of life in patients with chronic renal failure and hyperphosphatemia.

BACKGROUNDSecondary hyperparathyroidism, renal osteodystrophy, and cardiovascular adverse events can occur if long-term hyperphosphatemia is not corrected, leading to the adverse prognosis of patients with chronic renal failure. Besides the use of phosphorus binders, clinical control measures for hyperphosphatemia in these patients should also incorporate diet control.AIMTo observe doctor-led intensive diet education effects on health-related quality of life in patients with chronic renal failure and hyperphosphatemia.METHODSWe assessed 120 patients with hyperphosphatemia and chronic renal failure on hemodialysis admitted to our hospital (July 2018 to March 2020). The control group (n = 60) was given routine nursing guidance, and the observation group (n = 60) was given doctor-led intensive diet education. The changes in EQ-5D-3L scores, disease-related knowledge, and compliance scores before intervention and 3 and 6 mo after intervention in the two groups were recorded. The levels of serum parathyroid hormone (iPTH), calcium (Ca), phosphorus (P), calcium-phosphorus product (Ca × P), serum creatinine (Scr), and blood urea nitrogen (BUN) before intervention and 3 and 6 mo after intervention in the two groups were assessed along with patient satisfaction.RESULTSThere was no significant difference in blood iPTH, Ca, P, Ca × P, Scr, or BUN levels between the groups before intervention. After 3 and 6 mo of intervention, the blood iPTH, Ca, P, and Ca × P levels in the two groups decreased gradually (P < 0.05), but there were no significant differences in Scr or BUN. The blood iPTH, Ca, P, and Ca × P levels in the observation group were lower than those in the control group (P < 0.05). The satisfaction rate in the observation group after 3 mo was 93.33% and after 6, 90.00%, which was high compared with the 80.00% and 71.67%, respectively, in the control group (P < 0.05). There was no significant difference in EQ-5D-3L score between the two groups before intervention. After 3 and 6 mo of intervention, the visual analogue scale score of the two groups increased gradually (P < 0.05); and the scores of action ability, self-care, daily activities, pain and discomfort, and anxiety and depression decreased gradually (P < 0.05). The overall EQ-5D-3L score in the observation group was better than that in the control group (P < 0.05). There was no significant difference in disease-related knowledge or compliance scores between the groups before intervention. After 3 and 6 mo of intervention, the scores of disease, diet, and medication knowledge and compliance in the two groups increased gradually (P < 0.05). The scores of disease-related knowledge and compliance were higher in the observation group than in the control group (P < 0.05).CONCLUSIONDoctor-led intensive diet education can improve patient satisfaction and the quality of life in patients with chronic renal failure and hyperphosphatemia and promote low-phosphorus diet behavior.

Glymphatic Dysfunction in Patients With End-Stage Renal Disease.

BackgroundWe aimed to compare glymphatic dysfunction between patients with end-stage renal disease (ESRD) and healthy controls and analyze the correlation between the glymphatic function and clinical characteristics using the diffusion tensor image analysis along with the perivascular space (DTI-ALPS) index.MethodsWe prospectively enrolled neurologically asymptomatic 49 patients with ESRD undergoing dialysis and 38 healthy controls. Diffusion tensor image was conducted using the same 3T scanner, and the DTI-ALPS index was calculated. We compared the DTI-ALPS index between the patients with ESRD and healthy controls. In addition, we conducted a correlation analysis between the clinical characteristics and DTI-ALPS index in patients with ESRD.ResultsThere were significant differences in the DTI-ALPS index between patients with ESRD and healthy controls. The DTI-ALPS index in patients with ESRD was lower than that in healthy controls (1.460 vs. 1.632, p = 0.003). In addition, there was a significant positive correlation between the DTI-ALPS index and serum parathyroid hormone levels (r = 0.357, p = 0.011).ConclusionWe demonstrated glymphatic dysfunction in patients with ESRD, as revealed by the DTI-ALPS index. This study also reveals the feasibility of the DTI-ALPS method to determine glymphatic function in patients with ESRD, which could be used in future research studies.

The efficacy and safety of cinacalcet in primary hyperparathyroidism: a systematic review and meta-analysis of randomized controlled trials and cohort studies.

Cinacalcet, a positive allosteric modulator of the calcium sensing receptor (CaSR) reduces parathyroid hormone (PTH) secretion by increasing the sensitivity of the CaSR on parathyroid cells. We conducted a systematic review and meta-analysis on the safety and efficacy of cinacalcet in Primary Hyperparathyroidism (PHPT). MEDLINE, Embase, BIOSIS, and the Cochrane Library were searched for published articles (from database inception to Sept 2020). All double-blind RCTs and cohort studies that reported data on the efficacy and safety of cinacalcet therapy in individuals ≥ 18 with PHPT were included. Random effect meta-analysis was performed to estimate the efficacy of cinacalcet in lowering serum calcium and PTH levels compared with placebo. 4 RCTs (177 participants) and 17 cohort studies (763 participants) were eligible for final analysis. Pooled results from the RCTs suggest that, when compared to placebo and administered for up to 28weeks, cinacalcet normalizes serum calcium (≤ 10.3mg/dl) in patients with PHPT [RR 20 (95% CI 6.04 - 68.52, I2 = 0%, pheterogeneity < 0·00001)]. Serum PTH levels decreased significantly after 2weeks and up to 28weeks after treatment with cinacalcet. In the pooled analysis of the 17 cohort studies, serum calcium levels normalized in 76% (95% CI 66% to 86%; I2 = 92%, pheterogeneity < 0·00001) of patients regardless of the duration of treatment. In most studies, PTH levels decreased by 13% to 55%. No RCT reported on BMD as a primary or secondary outcome, and no improvement in BMD was noted in the 2 non-randomized studies that reported densitometric findings. No significant difference in urinary calcium was noted with cinacalcet therapy in either the RCTs or non-randomized studies. There was no significant difference in overall adverse events (AE) (RD 0.01, 95% CI -0.07 to 0.26) compared to placebo noted in the RCTs. In the non-randomized studies, pooled weighted AE rate was 45% (95% CI 32 to 59%). Risk of bias was low in 2/4 RCTs and 6/17cohort studies; risk was intermediate in 2/4 RCTs and 8/17 cohort studies, and risk was high in 3/17 cohort studies. In PHPT, cinacalcet lowers serum calcium and PTH with greater effects on calcium than on PTH in the short term. In the doses reported, the drug is safe with tolerable side effects. These findings can help inform targeted medical therapy of PHPT in those for whom lowering the serum calcium is indicated and for whom parathyroidectomy is not an option.

Evaluation of Clinical and Laboratory Factors Affecting Bone Mineral Density Measurements in Patients with Kidney Transplant

Histological evidence of osteodystrophy and osteopenia is encountered in most patients who have undergone successful renal transplantation. Renal transplantation may be beneficial for correcting uremia-related problems in end-stage renal disease patients; however, its benefit is limited in bone metabolism disorders. The present study aims to evaluate bone mass measurements and investigate the influencing factors in patients with renal transplant. One hundred and eighteen patients (83 males and 35 females) with a mean age of 40.2 ± 11.8 yr (range 20-67) were included in the present study. The laboratory and the clinical data of the patients were retrospectively analyzed. The association between bone mineral density (BMD) measurements and the demographic characteristics of the patients, serum creatinine, parathormone, calcium, phosphorous, alkaline phosphatase, 25-hydroxyvitamin D and the glomerular filtration rate were evaluated. Of the patients, 23.7% (n =28) had normal, 48.3% (n = 57) had osteopenic and 28% (n = 33) had osteoporotic BMD values. A significant positive correlation was determined between the body mass index (BMI) and the BMD measurement results (p = 0.001; r = 0.385). A negative correlation was determined between the BMD values and the serum parathormone (p = 0.012; r = -0.237). BMD values were significantly lower in the group that had not received mammalian target of rapamycin (mTOR) inhibitor (p = 0.026).Conclusion: BMI values, mTOR inhibitor treatment and serum parathormone levels had an effect on the BMD measurement values.

Fiber connectivity density mapping in end-stage renal disease patients: a preliminary study.

Abnormal brain structural connectivity of end-stage renal disease(ESRD) is associated with cognitive impairment. However, the characteristics of cortical structural connectivity have not been investigated in ESRD patients. Here, we study structural connectivity of the entire cerebral cortex using a fiber connectivity density(FiCD) mapping method derived from diffusion tensor imaging(DTI) data of 25 ESRD patients and 20 healthy controls, and between-group differences were compared in a vertexwise manner. We also investigated the associations between these abnormal cortical connectivities and the clinical variables using Pearson correlation analysis and multifactor linear regression analysis. Our results demonstrated that the mean global FiCD value was significantly decreased in ESRD patients. Notably, FiCD values were significantly changed(decreased or increased) in certain cortical regions, which mainly involved the bilateral dorsolateral prefrontal cortex(DLPFC), inferior parietal cortex, lateral temporal cortex and middle occipital cortex. In ESRD patients, we found a trend of negative correlation between the increased FiCD values of bilateral middle frontal gyrus and serum creatinine, urea, parathyroid hormone(PTH) levels and dialysis duration. Only the white matter hyperintensity(WMH) scores were significantly negatively correlated with the global FiCD value in multifactor regression analysis. Our results suggested that ESRD patients exhibited extensive impaired cortical structural connectivity, which was related to the severity of WMHs. A compensation mechanism of cortical structural recombination may play a role in how the brain adapts to maintain optimal network function. Additionally, the serum creatinine, urea and PTH levels may be risk factors for brain structural network decompensation in ESRD patients.

Cutaneous Lesions as a Clue to the Etiology of Extensive Intracranial Calcifications: Aicardi-Goutières Syndrome.

A 29-year-old man presented with an 18-year history of progressive spastic gait and bizarre behaviors (Video 1). Cerebral palsy was initially suspected. Brain CT (Figure, A–C) showed extensive intracranial calcifications. Serum parathyroid hormone, calcium, and phosphate levels were normal. Hypopigmented macules were uncovered on the dorsal hands, which developed since age 6 (Figure, D). Genetic testing revealed a pathogenic heterozygous p.Gly1007Arg variant in ADAR1 , confirming Aicardi-Goutières syndrome 6 (AGS6).1

Prophylactic bilateral central neck dissection should be evaluated based on prospective randomized study of 581 PTC patients

BackgroundProphylactic central lymph node dissection (PCND) was a basic consensus for patients with papillary thyroid carcinoma (PTC) in China. However, unilateral or bilateral central lymph node dissection (CND) was still controversial. This study aimed at investigating the safety and long-term benefit for the patients undergone with bilateral central lymph node dissection (BCCD).Methods581 patients were enrolled and divided randomly into the test and control groups according to range of CND. 285 patients were prospectively assigned to undergo thyroid lobectomy plus BCND in the test group, other 296 patients were assigned to undergo thyroid lobectomy plus ipsilateral central lymph node dissection (ICND) in the control group.ResultsWe found that the numbers of total LN and pN1a in the test group were more than that of the control group (p = 0.002,0.004), but there was no difference in the number of metastasized lymph nodes (p = 0.857) and tumor recurrence (p = 0.308). Additionally, in the aspect of postoperative complication (1 day after surgery), the serum levels of parathyroid hormone in the BCND group were lower than that in the ICND group (P = 0.010), and the numbers of transient laryngeal nerve palsy were more than that(p = 0.033). Meanwhile, we further found that pathological tumor size larger than 1 cm and tumor side lymph node metastasis were independent risk factors for contralateral central lymph node metastasis(p = 0.002,0.001).ConclusionBCND may be an alternative for patients with tumor sizes larger than 1 cm, but it would significantly increase the rate of transient vocal cord palsy, parathyroid auto transplantation and decreased PTH, but the risk of permanent complications was similar to the ICND group.

Comparison of Serum C-reactive Protein, Parathyroid Hormone, and Calcitonin Levels between Pregnant and Non Pregnant Women from Rural North Gujarat: A Case-control Study

Introduction: Pregnancy requires women to provide calcium to foetus in amounts that may exceed their daily intake. C-reactive protein (CRP) is a susceptible marker of systemic inflammation. Parathyroid hormone (PTH) regulates foeto-placental mineral homeostasis and skeletal development and stimulates placental calcium transfer. The increase in calcitonin and calcitriol levels are significant in the transport of maternal calcium to the fetus and in the anticipation, and revival of maternal bone loss. These changes have direct implications on calcium metabolism and cause decreased albumin level, inflammation, increase in extracellular fluid volume, increase in renal function, and placental calcium transfer. Aim: To assess the serum levels of CRP, calcitonin, and PTH in the first, second, and third trimester of pregnancy and also to compare these parameters with non pregnant women. Materials and Methods: The present case-control study was conducted in the Department of Biochemistry of Nootan Medical College and Research Centre, Visnagar, Gujarat, from June 2021 to October 2021. A total of 150 subjects (75 age-and sex-matched apparently healthy well-nourished non pregnant females, and 75 pregnant females) were included. CRP, PTH, and calcitonin were measured. Statistical analysis was performed using Independent t-test, and Pearson’s correlation coefficient (r). Results: Mean age of participants in case group was 32.16±10.97 (mean±SD). The mean age of control was 30.54±6.63. Serum CRP level of cases was significantly higher 3.2±2.2 than the level in controls 2.3±1.8 (p=0.003). Serum PTH level of cases 31.6±10.4 was significantly lower (p=0.0012) than the level in controls 45.9±9.8. Serum calcitonin level of cases 281±143 was significantly higher (p&lt;0.001) than the level in controls 103±46. Conclusion: There was a significant increase in serum CRP level and serum calcitonin level in cases as compared with controls while there is decrease in serum PTH levels between these two groups.

Therapeutic effect of acute and chronic use of different doses of vitamin D3 on seizure responses and cognitive impairments induced by pentylenetetrazole in immature male rats

Objective(s):This study aimed to evaluate the effects of acute and chronic intake of different doses of vitamin D3 on seizure responses and cognitive impairment induced by pentylenetetrazole (PTZ) in immature male rats.Materials and Methods:Sixty-six immature male NMRI rats were divided into control (10), epileptic (10), and treatment groups (46). The stage 5 latency (S5L) and stage 5 duration (S5D) were assessed along with the shuttle box test. Levels of antioxidant enzymes and inflammatory factors along with genes involved in inflammation, oxidative damage, apoptosis, and mTORc1 were measured in the hippocampus tissue of the brain of controlled and treated rats. Serum levels of parathyroid hormone (PTH), vitamin D, calcium, and phosphorus were also assessed.Results:The results showed that the ability to learn, memory consolidation, and memory retention in epileptic rats were reduced. In addition, S5D increased and S5L decreased in epileptic rats, while being effectively ameliorated by chronic and acute vitamin D intake. The results showed that vitamin D in different doses acutely and chronically decreased the levels of oxidative and inflammatory biomarkers in hippocampus tissue and inhibited the expression of genes involved in inflammation, oxidative damage, apoptosis, and mTORc1 in the hippocampus tissue of epileptic rats. Conclusion:The results showed that vitamin D in different doses acutely and chronically could improve cognitive impairments and convulsive responses in epileptic rats by improving neurotransmission, inflammation, apoptosis, and oxidative damage.

Serum Calcium/Phosphorus Ratio in Biochemical Screening of Primary Hyperparathyroidism.

Primary hyperparathyroidism is a common endocrine disease and most cases are asymptomatic. Currently, in a hypercalcemic patient, the first laboratory investigation is serum primary hyperparathyroidism measurement. However, the primary hyperparathyroidism level cannot be measured in many primary healthcare centers in our country. In addition, serum calcium levels are normal in normocalcemic primary hyperparathyroidism patients, even if most centers have serum calcium levels measured. Therefore, a simple and inexpensive laboratory biochemical marker is required for the diagnosis of primary hyperparathyroidism. Recently, the calcium/phosphorus ratio has been proposed as a suitable tool for diagnosing primary hyperparathyroidism. This study aimed to investigate the diagnostic value of serum calcium/phosphorus ratio in primary hyperparathyroidism screening. A total of 462 patients followed in our clinic with a diagnosis of primary hyperparathyroidism were reviewed in this retrospective study. Out of these patients, 148 with normal levels of serum parathyroid hormone, calcium, and phosphorus were selected as the control group. Serum calcium, corrected calcium, phosphorus, albumin, parathyroid hormone, 25-hydroxyvitamin D, and creatinine were evaluated. The diagnostic accuracy of the calcium/phosphorus ratio was investigated using receiver operating characteristic curve analysis. There were 404 (87.4%) females and 58 (12.6%) males in the primary hyperparathyroidism group. Calcium, parathyroid hormone, and calcium/phosphorus ratio were significantly higher in primary hyperparathyroidism than in controls (p<0.001 for each). Receiver operating characteristic curve analyses identified a cutoff value of 2.59 (3.35 if calcium and phosphorus are measured in mg/dL) for the calcium/phosphorus ratio, with a sensitivity of 90.5% and specificity of 93.2% (p<0.001). The calcium/phosphorus ratio is a simple and inexpensive method for primary hyperparathyroidism screening when a cutoff value of 2.59 is used.

Analysis of the cause and management of persistent laboratory abnormalities occurring after the surgical treatment of primary hyperparathyroidism.

PurposeThe surgical success rate for primary hyperparathyroidism (PHPT) is currently 95%–98%. However, 3%–24% of patients show persistently elevated (Pe) parathyroid hormone (PTH) levels after parathyroidectomy (PTX). This single-center retrospective study aimed to compare the outcomes of patients with normal PTH and PePTH levels after successful PTX and to identify the factors associated with PePTH.MethodsThe normal group, defined as patients with normal serum calcium and PTH levels immediately after PTX, was compared with the PePTH group (patients with normal or low serum calcium and increased serum PTH levels up to 6 months postoperatively) to determine the causes of disease in the PePTH group.ResultsThere were no significant differences in age, sex, or preoperative estimated glomerular filtration rate between the normal PTH group (333 of 364, 91.5%) and the PePTH group (31 of 364, 8.5%). However, there were significant differences in preoperative 25-hydroxyvitamin D (17.9 and 11.8 ng/mL, respectively; P = 0.003) and PTH levels (125.5 and 212.4 pg/mL, respectively; P < 0.001) between the 2 groups. Among the 31 cases of the PePTH group, 18 were attributed to vitamin D deficiency.ConclusionPreoperative vitamin D deficiency is a predictive factor for PePTH. Therefore, preoperative administration of vitamin D supplements may reduce the probability of postoperative disease persistence. Patients with temporary laboratory abnormalities within 6 months after successful PTX should be monitored, and appropriate vitamin D and calcium supplementation may reduce the effort and cost of various examinations or reoperations.

IS CONFIRMATION OF PARATHYROID TISSUE BY FROZEN SECTION SUPERIOR TO LOCALIZATION OF SOLITARY PARATHYROID ADENOMA USING INTRAOPERATIVE GAMMA PROBE SURVEY? A RETROSPECTIVE COHORT STUDY.

In the surgical treatment of primary hyperparathyroidism, intraoperative localization of the diseased glands is an essential issue. We aimed to evaluate the impact of the intraoperative frozen section during radio-guided focused parathyroidectomy and compare its efficiency with intraoperative gamma probe survey and measurement of intraoperative quick parathyroid hormone. All consecutive patients underwent radio-guided focused parathyroidectomy for primary hyperparathyroidism due to solitary parathyroid adenoma. The outcomes of parathyroidectomy were evaluated by serum levels of calcium and parathyroid hormone. The primary outcome was the surgical cure diagnosed by normal serum calcium levels in the sixth postoperative month. A total of 55 patients with a mean age of 54.3±12.2 years were evaluated. The diagnostic accuracy of the preoperative localization tests was calculated as 92.7%. The intraoperative gamma probe survey impacted the operative plans of four patients (7.3%) by localizing the diseased gland in other positions. The accuracy of intraoperative quick parathyroid hormone and frozen section analysis was 100% for both. In all patients, serum calcium and PTH levels dropped to normal in the sixth postoperative month. There were no cases of the persistent or recurrent disease during the follow-up period. The results of the intraoperative gamma probe survey, intraoperative quick parathyroid hormone, and frozen section were concordant with the final pathology in all cases. In four patients (7.3%), intraoperative gamma probe survey impacted the operative plans. The intraoperative gamma probe survey may be used as the sole intraoperative method to locate the correct position of the solitary parathyroid adenoma.

ПРОГНОЗИРОВАНИЕ И ДИАГНОСТИКА МНОЖЕСТВЕННОГО ПОРАЖЕНИЯ ОКОЛОЩИТОВИДНЫХ ЖЕЛЕЗ ПРИ ПЕРВИЧНОМ ГИПЕРПАРАТИРЕОЗЕ МЕТОДОМ МАТЕМАТИЧЕСКОГО АНАЛИЗА

Background. Multigland parathyroid disease remains an unresolved problem in endocrine surgery. This is caused by the complexity of clinical and laboratory prediction, insufficient sensitivity of imaging methods and intraoperative monitoring of intact parathyroid hormone. The aim. To develop a predictive scale for multigland parathyroid disease in primary hyperparathyroidism. Materials and methods. We conducted a single-center prospective study which included 126 cases of surgical treat-ment of primary hyperparathyroidism (2019–2021). The main objective of the study was to develop a scale for predicting multigland parathyroid disease in primary hyperparathyroidism using the method of mathematical analysis. Results. The developed scale includes determination of serum levels of albumin-corrected calcium and parathy-roid hormone, glomerular filtration rate, measurement of parathyroid glands parameters according to ultrasound and/or scintigraphy and assessment of the consistency of these results and determination of the KIB coefficient. The results are appraised by points. If the total score is less than 2 points, multigland parathyroid disease is diagnosed; if the total score equals to or more than 2 points – single-gland parathyroid disease. Conclusion. Mathematical prediction of multigland parathyroid disease allows us to clarify the preoperative diagnosis and to plan the scope of surgical treatment.

Double water-clear cell parathyroid adenoma: a case report and literature review

Water-clear cell parathyroid adenoma is an uncommon cause of primary hyperparathyroidism. Herein, we report an interesting case of a 56-year-old man who presented with weight loss, bone pain, fatigue, and a palpable right neck mass. Laboratory tests indicated hypercalcemia, elevated parathyroid hormone (PTH) levels, and normal thyroid function. Further examinations detected osteoporosis and kidney stones. The ultrasound of neck revealed bilateral extrathyroidal tumors, which were sestamibi-avid. The patient underwent resection of the large right inferior and left inferior parathyroid tumors. Histopathology revealed a double water-clear cell parathyroid adenoma. His serum calcium and PTH levels normalized after surgery. The literature review identified 37 cases of water-clear cell parathyroid adenoma between 1985 and 2021. The median age at diagnosis was 56 years. Classic complications were common, including nephrolithiasis in nine and skeletal presentations in 10 patients. Before surgery, the median calcium and PTH levels were 12.0 mg/dL and 290 pg/mL, respectively. Overall, 89% were localized on ultrasonography, and 60% were positive on scintigraphy. Four patients had double adenomas. The median maximum diameter was 3.8 cm, and the median weight of the resected adenoma was 5.27 g. In summary, water-clear cell parathyroid adenoma has certain unique features. These include larger tumor size, relatively indolent biochemical profile, high prevalence of complications and nonspecific symptoms, an isoechoic appearance on ultrasonography, and reduced scintigraphic sensitivity.

MINERAL BONE DENSITY AND VITAMIN D LEVELS IN PATIENTS WITH PSORIATIC ARTHRITIS.

The objective of this study was to explore the possible differences in bone mass density (BMD) and markers of bone metabolism between patients with psoriasis with concomitant psoriatic arthritis (PsA) and patients with psoriasis only (PV). A comparable sample of both types of patients were included in analysis. In all patients, vitamin D serum levels along with inflammatory markers and parathyroid hormone (PTH) were measured. BMD was assessed with dual-energy x-ray absorptiometry scan in axial and appendicular skeleton. Patients with PsA tended to have decreased BMD in axial skeleton, while BMD in appendicular skeleton was comparable between the groups. No statistically significant correlation was found of inflammatory markers, vitamin D and PTH levels with BMD in either patient group. A negative correlation was recorded between vitamin D serum concentration and PTH levels.

A girl diagnosed with familial hypocalciuric hypercalcemia with heterozygous p.Cys575Tyr variation in the CaSR gene

Familial hypocalciuric hypercalcemia (FHH) is a benign disease associated with heterozygous inactivating mutations in the calcium-sensing receptor (CaSR) gene. This article presents a girl with heterozygous p.Cys575Tyr variation in the CaSR gene. The serum calcium level of a 9.2-year-old girl was 12.4mg/dl in incidental laboratory analysis. On the same occasion, the serum parathyroid hormone (PTH) level was 45 pg/ml, 25(OH) vitamin D level 24.2ng/ml, 1.25 dihydroxy vitamin D level 22pg/ml, and urinary Ca/creatinine ratio &lt;0.01. The ultrasonographic evaluation of the urinary system was unremarkable. The clinical and laboratory findings pointed towards FHD. A heterozygous p.Cys575Tyr (c.1724G&gt;A) variation was detected in the patient's CaSR gene, which was reported before, but no clinical manifestations were specified. In children with asymptomatic hypercalcemia, the diagnosis of FHH should be considered if the PTH level is normal or high and the urinary calcium is low.