Periampullary duodenal neuroendocrine tumor in a patient with neurofibromatosis-1:A case report

BACKGROUND Patients with neurofibromatosis type 1(NF1)are exposed to a higher risk of developing neuroendocrine tumors(NETs).Periampullary neuroendocrine neoplasms(NENs)in NF1 patients primarily affect the duodenum and periampullary region.CASE SUMMARY A 50-year-old male patient was admitted to our hospital due to progressive skin and scleral yellowing for over 6 months.An abdominal contrast-enhanced computed tomography scan revealed a tumor in the periampullary region,which measured 1.2 cm×1.4 cm in size and showed a progressive enhancement.Magnetic resonance cholangiopancreatography indicated the dilation of intrahepatic and extrahepatic bile ducts.The patient was diagnosed with an ampullary tumor with the possibility of malignancy.A Whipple procedure was performed.Microscopically,the duodenum tumor was found to invade the mucosa,sphincter,and muscular layer of the duodenal papilla.Histologic hematoxylin and eosin staining confirmed the presence of duodenal G1 NET.Subsequently,a bibliometric analysis was performed to evaluate the state of NEN research.Publications about periampullary NENs showed an annual increase,with most of them focusing on the treatment and diagnosis of NENs.CONCLUSION This article reported a case of periampullary duodenal NET in a patient with NF1,and a bibliometric analysis was conducted.

C634Y mutation in RET-induced multiple endocrine neoplasia type 2A:A case report

BACKGROUND Multiple endocrine neoplasia type 2(MEN2)is a rare,autosomal dominant endocrine disease.Currently,the RET proto-oncogene is the only gene implicated in MEN2A pathogenesis.Once an RET carrier is detected,family members should be screened to enable early detection of medullary thyroid carcinoma,pheochromocytoma,and hyperparatitity.Among these,medullary thyroid carcinoma is the main factor responsible for patient mortality.Accordingly,delineating strategies to inform clinical follow-up and treatment plans based on genes is paramount for clinical practitioners.CASE SUMMARY Herein,we present RET proto-oncogene mutations,clinical characteristics,and treatment strategies in a family with MEN2A.A family study was conducted on patients diagnosed with MEN2A.DNA was extracted from the peripheral blood of family members,and first-generation exon sequencing of the RET protooncogene was conducted.The C634Y mutation was identified in three family members spanning three generations.Two patients were sequentially diagnosed with pheochromocytomas and bilateral medullary thyroid carcinomas.A 9-yearold child harboring the gene mutation was diagnosed with medullary thyroid carcinoma.Surgical resection of the tumors was performed.All family members were advised to undergo complete genetic testing related to the C634Y mutation,and the corresponding treatments administered based on test results and associated clinical guidelines.CONCLUSION Advancements in MEN2A research are important for familial management,assessment of medullary thyroid cancer invasive risk,and deciding surgical timing.

Early detection of multiple endocrine neoplasia type 1: A case report

BACKGROUND Multiple endocrine neoplasias(MENs)are a group of hereditary diseases invol-ving multiple endocrine glands,and their prevalence is low.MEN type 1(MEN1)has diverse clinical manifestations,mainly involving the parathyroid glands,gastrointestinal tract,pancreas and pituitary gland,making it easy to miss the clinical diagnosis.CASE SUMMARY We present the case of a patient in whom MEN1 was detected early.A middle-aged male with recurrent abdominal pain and diarrhea was admitted to the hos-pital.Blood tests at admission revealed hypercalcemia and hypophosphatemia,and emission computed tomography of the parathyroid glands revealed a hy-perfunctioning parathyroid lesion.Gastroscopy findings suggested a duodenal bulge and ulceration.Ultrasound endoscopy revealed a hypoechoic lesion in the duodenal bulb.Further blood tests revealed elevated levels of serum gastrin.Surgery was performed,and pathological analysis of the surgical specimens revealed a parathyroid adenoma after parathyroidectomy and a neuroendocrine tumor after duodenal bulbectomy.The time from onset to the definitive diagnosis of MEN1 was only approximately 1 year.CONCLUSION For patients who present with gastrointestinal symptoms accompanied by hyper-calcemia and hypophosphatemia,clinicians need to be alert to the possibility of MEN1.

Molecular diagnostic approaches in detecting rearranged during transfection oncogene mutations in multiple endocrine neoplasia type 2

Different types of neuroendocrine cancer,including medullary thyroid cancer(MTC)and thyroid C-cell hyperplasia,are part of multiple endocrine neoplasia type 2(MEN2).A proto-oncogene mutation of the rearranged during transfection(RET)gene changes the way that receptor tyrosine kinases work.Multiple endocrine neoplasia,a pathological condition,involves these kinases.When the RET protooncogene changes,it can cause endocrine adenomas and hyperplasia to happen at the same time or one after the other.Pheochromocytoma,medullary thyroid carcinoma,and hyperparathyroidism,alone or in combination,are present in MEN2A patients.Some patients may also have skin lichen amyloidosis or Hirschsprung's disease.Patients with MEN2A often present with MTC.MTC is aggressive and has the worst prognosis,as most patients exhibit lymph node metastasis.MTC is one of the important causes of death in patients with MEN2A.RET mutation analysis aids in identifying MEN2A symptoms and monitoring levels of calcium,thyroid hormones,calcitonin,normetanephrine,fractionated metanephrines,and parathyroid hormone.The earlier diagnosis of MTC significantly improves survival and prompts better management of MEN2A.In this editorial,we will discuss the significance of molecular diagnostic approaches in detecting RET oncogene mutations in MEN2A.

Research progress of traditional Chinese medicine in the treatment of endocrine metabolic diseases in 2023

This study aimed to provide a comprehensive review of the research progress in Chinese medicine in the treatment of endocrine metabolic diseases in 2023,covering traditional Chinese medicine(TCM)monomers,TCM extracts,and TCM combinations,including non-alcoholic fatty liver disease,type 2 diabetes mellitus and its complications,obesity,hyperuricaemia,and thyroid disorders.After systematic sorting and summary,we found that in 2023,the research focusing on the application of TCM for endocrine metabolic diseases was still on the mechanism of action at the cellular and molecular levels,which not only influenced the classical pathways of lipid metabolism,but also delved into the key mechanisms of anti-inflammation,anti-oxidation,anti-insulin resistance,and so on.Additionally,TCM has shown remarkable results in the treatment of endocrine metabolic diseases by improving intestinal flora disorders and abnormal cellular iron death.These research results provide valuable ideas,methods,and tools for TCM in the prevention and treatment of endocrine metabolic diseases,and provide important references and guidance for future research and practice.

Impacts of different pancreatic resection ranges on endocrine function in Suncus murinus

BACKGROUND Surgical intervention involving the pancreas can lead to impaired glucose tolerance and other types of endocrine dysfunction.The scope of pancreatectomy and whether it includes the ventral pancreas are the key factors in the development of postoperative diabetes.The ventral and dorsal pancreases are almost separated in Suncus murinus(S.murinus).AIM To investigate the effects of different extents of pancreatic resection on endocrine function in S.murinus.METHODS Eight-week-old male S.murinus shrews were randomly divided into three experimental groups according to different pancreatic resection ranges as follows:ventral pancreatectomy(VPx)group;partial pancreatectomy(PPx)group;subtotal pancreatectomy(SPx)group;and a sham-operated group.Postprandial serum insulin,glucagon-like peptide-1(GLP-1),pancreatic polypeptide(PP),and somatostatin(SST)levels,as well as food intake,weight,blood glucose,and glucose tolerance were regularly measured for each animal.RESULTS S.murinus treated with PPx and SPx suffered from varying degrees of impaired glucose tolerance,but only a small proportion of the SPx group developed diabetes.Only S.murinus in the SPx group showed a significant decrease in food intake accompanied by severe weight loss,as well as a significant increase in postprandial serum GLP-1 levels.Postprandial serum PP levels decreased in both the VPx and PPx groups,but not in the SPx group.Postprandial serum SST levels decreased in both VPx and PPx groups,but the decrease was marginal.CONCLUSION Severe weight loss after pancreatectomy may be related to loss of appetite caused by compensatory elevation of GLP-1.PP and GLP-1 may play a role in resisting blood glucose imbalance.

Circadian rhythm disruption and endocrine-related tumors

This review delved into the intricate relationship between circadian clocks and physiological processes,emphasizing their critical role in maintaining homeo-stasis.Orchestrated by interlocked clock genes,the circadian timekeeping system regulates fundamental processes like the sleep-wake cycle,energy metabolism,immune function,and cell proliferation.The central oscillator in the hypothalamic suprachiasmatic nucleus synchronizes with light-dark cycles,while peripheral tissue clocks are influenced by cues such as feeding times.Circadian disruption,linked to modern lifestyle factors like night shift work,correlates with adverse health outcomes,including metabolic syndrome,cardiovascular diseases,infec-tions,and cancer.We explored the molecular mechanisms of circadian clock genes and their impact on metabolic disorders and cancer pathogenesis.Specific associ-ations between circadian disruption and endocrine tumors,spanning breast,ovarian,testicular,prostate,thyroid,pituitary,and adrenal gland cancers,are highlighted.Shift work is associated with increased breast cancer risk,with PER genes influencing tumor progression and drug resistance.CLOCK gene expression correlates with cisplatin resistance in ovarian cancer,while factors like aging and intermittent fasting affect prostate cancer.Our review underscored the intricate interplay between circadian rhythms and cancer,involving the regulation of the cell cycle,DNA repair,metabolism,immune function,and the tumor microenvir-onment.We advocated for integrating biological timing into clinical consider-ations for personalized healthcare,proposing that understanding these connec-tions could lead to novel therapeutic approaches.Evidence supports circadian rhythm-focused therapies,particularly chronotherapy,for treating endocrine tumors.Our review called for further research to uncover detailed connections between circadian clocks and cancer,providing essential insights for targeted treatments.We emphasized the importance of public health interventions to mitigate lifestyle-related circadian disruptions and underscored the critical role of circadian rhythms in disease mechanisms and therapeutic interventions.

Detection of Endocrine Disruptors in Water around Landfills

[Objectives]This study was conducted to explore the occurrence levels of endocrine disruptors(EDCs)in rural areas around a county landfill in Tongren City.[Methods]The water around the landfill was sampled and analyzed.A solid-phase extraction and high performance liquid chromatography-tandem mass spectrometry(SPE-UPLC-MS/MS)method was established for the determination of 27 EDCs.After the HLB solid-phase extraction column was activated,a water sample,which was adjusted with phosphoric acid to a pH of 2(±0.5)and added with 500 mg of disodium EDTA,was loaded,and 5 ml of water and 20%methanol water was added for washing.Next,10 ml of elution solution was added for elution,and the collected eluate was evaporated under reduced pressure at 40℃to near dryness,and 1 ml of reconstitution solution was added to a constant volume.An ACQUITY UPLC BEH C18(100×2.1 mm,2.6μm)chromatographic column was adopted for LC separation by gradient elution with pure water solution-acetonitrile as the mobile phase.For MS detection,the MRM mode was adopted for collection,and the positive and negative ion modes were switched for simultaneous determination,and the internal standard method was used for quantification.[Results]The correlation coefficient R2 was greater than 0.99 in the linear range of each target substance.The limits of quantitation in the method were between 0.05 and 2.00 ng/L,and the recoveries ranged from 75.3%to 105.7%.[Conclusions]The method has high sensitivity,good accuracy and strong practical value.

Mixed epithelial endocrine neoplasms of the colon and rectum–An evolution over time:A systematic review

BACKGROUND Mixed tumors of the colon and rectum,composed of a combination of epithelial and endocrine elements of benign and malignant potential are rare neoplasms.These can occur anywhere in the gastrointestinal tract and are often diagnosed incidentally.Though they have been a well-documented entity in the pancreas,where the exocrine-endocrine mixed tumors have been known for a while,recognition and accurate diagnosis of these tumors in the colon and rectum,to date,remains a challenge.This is further compounded by the different terminologies that have been attributed to these lesions over the years adding to increased confusion and misclassification.Therefore,dedicated literature reviews of these lesions in the colon and rectum are inconsistent and are predominantly limited to case reports and case series of limited case numbers.Though,most of these tumors are high grade and of advanced stage,intermediate and low grade lesions of these mixed tumors are also increasingly been reported.There are no established independent consensus based guidelines for the therapeutic patient management of these unique lesions.AIM To provide a comprehensive targeted literature review of these complex mixed tumors in the colon and rectum that chronicles the evolution over time with summarization of historical perspectives of terminology and to further our understanding regarding their pathogenesis including genomic landscape,clinicoradiological features,pathology,treatment,prognosis,the current status of the management of the primary lesions,their recurrences and metastases.METHODS A comprehensive review of the published English literature was conducted using the search engines PubMed,MEDLINE and GOOGLE scholar.The following search terms[“mixed tumors colon”OR mixed endocrine/neuroendocrine tumor/neoplasm/lesion colon OR adenocarcinoma and endocrine/neuroendocrine tumor colon OR mixed adenocarcinoma and endocrine/neuroendocrine carcinoma colon OR Amphicrine tumors OR Collision tumors]were used.Eligibility criteria were defined and all potential relevant items,including full articles and/or abstracts were independently reviewed,assessed and agreed upon items were selected for in-depth analysis.RESULTS In total 237 full articles/abstracts documents were considered for eligibility of which 45 articles were illegible resulting in a total of 192 articles that were assessed for eligibility of which 139 have been selected for reference in this current review.This seminal manuscript is a one stop article that provides a detailed outlook on the evolution over time with summarization of historical perspectives,nomenclature,clinicoradiological features,pathology,treatment,prognosis and the current status of the management of both the primary lesions,their recurrences and metastases.Gaps in knowledge have also been identified and discussed.An important outcome of this manuscript is the justified proposal for a new,simple,clinically relevant,non-ambiguous terminology for these lesions to be referred to as mixed epithelial endocrine neoplasms(MEENs).CONCLUSION MEEN of the colon and rectum are poorly understood rare entities that encompass an extensive range of heterogeneous tumors with a wide variety of combinations leading to tumors of high,intermediate or low grade malignant potential.This proposed new revised terminology of MEEN will solve the biggest hurdle of confusion and misclassification that plagues these rare unique colorectal neoplasms thus facilitating the future design of multi institutional prospective randomized controlled clinical trials to develop and evaluate newer therapeutic strategies that are recommended for continued improved understanding and personal optimization of clinical management of these unique colorectal neoplasms.

Myo-inositol versus metformin effects on clinical features, endocrine and metabolic profiles in infertile women with polycystic ovary syndrome: A randomized controlled trial

Objective:To compare the effectiveness of inositol and metformin on the clinical characteristics,and endocrine and metabolic profiles of infertile polycystic ovarian syndrome(PCOS)women from Vietnam.Methods:From June 2018 to August 2022,a randomized trial was undertaken at the Hue Center for Endocrinology and Reproduction on infertile women aged 18 to 40 years with polycystic ovarian syndrome.The clinical,endocrine,and metabolic features of these individuals were assessed before and after 3 months of treatment with 2 g of inositol or 1700 mg of metformin per day.Natural pregnancy rates,adverse effects,and tolerance of inositol were recorded.Results:The study included 171 infertile PCOS women who were eligible to participate and took part in the baseline assessment,of whom 132 women participated in data analysis after 3 months.After metformin treatment,42.1%of women with oligomenorrhea experienced regular menstruation.Metformin significantly lowered body mass index(BMI),waist circumference and testosterone levels,but had no effect on other clinical characteristics,endocrine profiles,or metabolic profiles.29.2%Of women reported experiencing side effects.21%Of them attained pregnancy,which resulted in 17.1%of live births.In the inositol group,the rate of regular cycle increased by 18.2%and the total testosterone concentration significantly decreased.In overweight/obese women with PCOS,inositol significantly decreased weight,BMI,waist and hip circumferences(P<0.05).100%Of women tolerated inositol and continued treatment.18.9%Of them became pregnant,leading to 17%of live births.Conclusions:Metformin and inositol can improve weight and waist circumference in overweight/obese infertile women with PCOS.Metformin is associated with a higher rate of regular menstruation,whereas inositol is associated with a lower rate of adverse effects.The spontaneous conception,clinical pregnancy,and live birth rates between two groups are comparable.

Systematic review and meta-analysis of endometrial thickening during endocrine therapy combined with Chinese herbal medicine intervention after breast cancer surgery

Objective:To systematically evaluate the endometrial thickening and Chinese herbal medicine intervention effects during endocrine therapy following breast cancer surgery.Methods:Computerized searches were performed on CNKI,CBM,Wanfang,VIP,Pub Med,Embase,and Cochrane to gather randomized controlled trials(RCTs)of endometrial thickening combined with Chinese herbal medicine intervention during endocrine therapy after breast cancer surgery.The meta analysis is done using Rev Man 5.4,and the retrieval range is from the database's creation to January 2023.Results:There were 710 patients enrolled in a total of 12 RCTs.The results of Meta-analysis were as follows:combined with Chinese herbal medicine treatment for 3 months of endometrial thickness(MD=-1.12,95%CI[-1.47,0.77],P<0.00001);6 months endometrial thickness(MD=-1.90,95%CI[-2.38,-1.42],P<0.00001);endometrial thickness at 12 months(MD=-2.24,95%CI[-2.96,-1.52],P<0.00001);modified Kupperman score(MD=-10.45,95%CI[-19.10,-1.80],P=0.02);TCM syndrome score(SMD=-1.53,95%CI[-1.84,-1.22],P<0.00001);KPS score(MD=3.75,95%CI[2.81,4.68],P<0.00001);there was no significant difference in CA153,CEA,FSH and E2 between the two groups.Conclusion:After breast cancer surgery,endocrine therapy combined with Chinese herbal medicine can significantly lessen endometrial thickening and enhance patient quality of life.

Pollution of Environmental Endocrine Disrupting Chemicals(EDCs) in Water and Its Adverse Reproductive Effect on Fish

Environmental endocrine disrupting chemicals （EDCs）, commonly found in the environment, come from industry and agriculture, including pesticides, fungicides, insecticides, herbicides, and other chemicals. Nowadays, more and more EDCs were released into the environment. EDCs go into water body via atmosphere sedi-mentation, surface runoff, soil eluviation, etc., so water body becomes the main place for existing. In order to attract scientific and public attention worldwide and to prevent EDCs pol ution, in this study we reviewed the classification of EDCs and their concentrations in natural water bodies, drinking water sources and water plants, and the reproductive toxicity of EDCs to fish were reviewed. EDCs could disturb the endocrine system and make reproductive organs and reproduction abnor-mal, resulting in fertility descending, reproduction function damage, community quan-tity decrease and even species extinction. In addition, EDCs could disrupt the homeostasis maintained by hormones, which would result in defects of neural de-velopment and abnormalities of the endocrine and reproductive systems. The exact molecular mechanisms have not been completely reported, but researches have suggested that multiple mechanisms were involved in the action of EDCs. Although there have been researches on the biohazard of EDCs, there stil exist problems of weakness in fundamental researches, difficulties in recognizing and identifying EDCs and high cost, which restraint the knowledge on them.

Immunohistochemical Location of Six Kinds of Endocrine Cell from Digestive Tract of Misgurnus anguillicaudatus

[Objective] The study was to immunohistochemical localize the endocrine cells from digestive tract of Misgurnus [ Method ] Using six gastrointestinal hormone antisera, the endocrine cells from digestive tract of M. anguillicaudatus was localized. [ Result ]The 5-hydroxytryptamine immunoreactive（5-HT-IR） cells distribute in oesophagus, foregut and midgut; the distribution density was determined to be forepart of foregut 〉 oesophagus and hindpart of foregut 〉 gut, and the differences in the three density gradients reached significant level. Like PP-IR, SS-IR cells were observed mostly in oesophagus, followed by hindpart of foregut, least in forepart of foregut, but never found in gut and hindgut. The three kinds of immunocompetent cells Gas-IR, Glu-IR and SP-IR were not detected in each part of digestive tract. [ Conctusion] This study may provide basic data for studying the nutritional and digestive physiology, as well as the preparation of meridic diets for M. anguillicaudatus.

Recent standardization of treatment strategy for pancreatic neuroendocrine tumors

Recent advances in localization techniques,such as the selective arterial secretagogue injection test(SASI test) and somatostatin receptor scintigraphy have promoted curative resection surgery for patients with pancreatic neuroendocrine tumors(PNET).For patients with sporadic functioning PNET,curative resection surgery has been established by localization with the SASI test using secretin or calcium.For curative resection of functioning PNET associated with multiple endocrine neoplasia type 1(MEN 1) which are usually multiple and sometimes numerous,resection surgery of the pancreas and/or the duodenum has to be performed based on localization by the SASI test.As resection surgery of PNET has increased,several important pathological features of PNET have been revealed.For example,in patients with Zollinger-Ellison syndrome(ZES),duodenal gastrinoma has been detected more frequently than pancreatic gastrinoma,and in patients with MEN 1 and ZES,gastrinomas have been located mostly in the duodenum,and pancreatic gastrinoma has been found to co-exist in 13% of patients.Nonfunctioning PNET in patients with MEN 1 becomes metastatic to the liver when it is more than 1 cm in diameter and should be resected after careful observation.The most important prognos-tic factor in patients with PNET is the development of hepatic metastases.The treatment strategy for hepatic metastases of PNET has not been established and aggressive resection with chemotherapy and trans-arterial chemoembolization have been performed with significant benefit.The usefulness of octreotide treatment and other molecular targeting agents are currently being assessed.

Primary large cell neuroendocrine carcinoma in the common bile duct:First Asian case report

Large cell neuroendocrine carcinoma (LCNEC) in the biliary system is a poorly differentiated, high-grade neuroendocrine tumor. These tumors exhibit aggressive behavior and an increased tendency for early nodal and distant metastases. Herein, we report an unusual case of a pure primary LCNEC of the common bile duct (CBD). A 75-year-old female presented with nausea and jaundice. The patient underwent a CBD excision with lymph node dissection. Upon histological and immunohistochemical examination, the tumor exhibited pure large cell-type neuroendocrine features. Metastases were noted in two of the eight lymph nodes. The patient was administered adjuvant chemotherapy. The patient&#x02019;s cancer recurred 7 mo after surgery, and the patient died from liver failure 5 mo after recurrence. The prognosis of LCNEC of CBD remains poor despite curative resection and adjuvant chemotherapy. The role of additional therapies, such as multimodal treatment including radiation therapy, must be further studied to improve the prognoses of patients.

Biochemically curative surgery for gastrinoma in multiple endocrine neoplasia type 1 patients

AIM： To search for the optimal surgery for gastrinoma and duodenopancreatic neuroendocrine tumors in patients with multiple endocrine neoplasia type 1. METHODS： Sixteen patients with genetically confirmed multiple endocrine neoplasia type 1 （MEN 1） and Zollinger-Ellison syndrome （ZES） underwent resection of both gastrinomas and duodenopancreatic neuroendocrine tumors （NETs） between 1991 and 2009. For localization of gastrinoma, selective arterial secretagogue injection test （SASI test） with secretin or calcium solution was performed as well as somatostatin receptor scintigraphy （SRS） and other imaging methods such as computed tomography （CT） or magnetic resonance imaging （MRI）. The modus of surgery for gastrinoma has been changed over time, searching for the optimal surgery： pancreaticoduodenectomy （PD） was first performed guided by localization with the SAST test, then local resection of duodenal gastrinomas with dissection of regional lymph nodes （LR）, and recently pancreas-preserving total duodenectomy （PPTD） has been performed for multiple duodenal gastrinomas. RESULTS： Among various types of preoperative localizing methods for gastrinoma, the SASI test was the most useful method. Imaging methods such as SRS or CT made it essentially impossible to differentiate functioning gastrinoma among various kinds of NETs. However, recent imaging methods including SRS or CT were useful for detecting both distant metastases and ectopic NETs; therefore they are indispensable for staging of NETs. Biochemical cure of gastrinoma was achieved in 14 of 16 patients （87.5%）; that is, 100% in 3 patients who underwent PD, 100% in 6 patients who underwent LR （although in 2 patients （33.3%） second LR was performed for recurrence of duodenal gastri- noma）, and 71.4% in 7 patients who underwent PPTD. Pancreatic NETs more than 1 cm in diameter were resected either by distal pancreatectomy or enucleations, and no hepatic metastases have developed postoperatively. Pathological study of the resected specimens revealed co-existence of pancreatic gastrinoma with duodenal gastrinoma in 2 of 16 patients （13%）, and G cell hyperplasia and/or microgastrinoma in the duodenal Brunner＇s gland was revealed in all of 7 duodenal specimens after PPTD. CONCLUSION： Aggressive resection surgery based on accurate localization with the SASI test was useful for biochemical cure of gastrinoma in patients with MEN 1.Imamura Metal. Curative resection of gastrinoma in MEN-1

关于Endocrine Disruptors的译名

当今环境科学的发展十分迅速 ,新的名词术语大量涌现 ,但由于对这些名词翻译和使用上的不统一 ,给广大的科技工作者和关心环境问题的普通百姓造成了工作中或认识上的麻烦和混乱。例如 ,“一类来源于环境中的、能干扰生物体内分泌功能的物质” ,就有“环境内分泌干扰物”、“内分泌干扰物”、“内分泌紊乱剂”、“环境激素”、“环境荷尔蒙”等多种中文名称 ,其英文名称也有“endocrinedisruptors”、“environ mentalendocrinedisruptors”、“endocrinedisruptingchemicals”、“environmentalhormones”等多种表述 ,并且对这类物质的定义 ,在国际上还没有达到完全一致 ,亟待统一和规范。为了尽快统一和规范环境科学的名词术语 ,我们邀请有关专家在本刊对一些新近出现的影响较大、分歧较多的环境科学名词术语进行研究和讨论 ,以期为将来名词的最终审定奠定基础。我们欢迎广大读者来稿发表意见 ,以使审定的名词更科学、更准确、更有利于普及利用。

Current surgical management of pancreatic endocrine tumor liver metastases

BACKGROUND: The management of metastatic disease in pancreatic endocrine tumors (PETs) demands a multidisciplinary approach and the cooperation of several medical specialties. The role of surgery is critical, even when a radical excision cannot always be achieved. DATA SOURCES: A PubMed search of relevant articles published up to February 2011 was performed to identify current information about PET liver metastases regarding diagnosis and management, with an emphasis on surgery. RESULTS: The early diagnosis of metastases and their accurate localization, most commonly in the liver, is very important. Surgical options include radical excision, and palliative excision to relieve symptoms in case of failure of medical treatment. The goal of the radical excision is to remove the primary tumor bulk and all liver metastases at the same time, but unfortunately it is not feasible in most cases. Palliative excisions include aggressive tumor debulking surgeries in well-differentiated carcinomas, trying to remove at least 90% of the tumor mass, combined with other additional destructive techniques such as hepatic artery embolization or chemoembolization to treat metastases or chemoembolization to relieve symptoms in cases of rapidly growing tumors. The combination of chemoembolization and systemic chemotherapy results in better response and survival rates. Other local destructive techniques include ethanol injection, cryotherapy and radiofrequency ablation. CONCLUSION: It seems that the current management of PETs can achieve important improvements, even in advanced cases.

In vitro study of neuroendocrine regulation over the testicular development in mud crabs Scylla serrata

The reproductive endocrine activities of neuroendocrine organs and androgenic glands (AG) in male Scylla serrata were investigated with co-incubation technology. In vitro studies show that: (1) the AG in Stage Ⅲ can significantly accelerate the development of seminiferous tubules and spermic matu- ration; (2) the brain, thoracic ganglia and optic ganglia have no direct influence over the testicular devel- opment; (3) the brain and thoracic ganglia can significantly promote the growth of the AG cells and highly significantly boost the ratio of Type B cells, while the optic ganglia have no such effects. It is the first time for in vitro investigations to confirm that the brain and thoracic ganglia can regulate testicular development through AG in male crustaceans.

Neoadjuvant peptide receptor radionuclide therapy for an inoperable neuroendocrine pancreatic tumor

Pancreatic endocrine tumors are rare but are among the most common neuroendocrine neoplasms of the abdomen.At diagnosis many of them are already advanced and diff icult to treat.We report on an initially inoperable malignant pancreatic endocrine tumor in a 33-year-old woman,who received neoadjuvant peptide receptor radionuclide therapy(PRRT)as firstline treatment.This resulted in a signif icant downstaging of the tumor and allowed its subsequent complete surgical removal.Follow-up for eighteen months revealed a complete remission.This is the first report on neoadjuvant PRRT in a neuroendocrine neoplasm with subsequent successful complete resection.