bluuebunny/crossref_metadata_2025_split huggingface dataset:
Offspring from oocytes grown in frozen-thawed ovarian tissues transplanted to male and female bodies
Authors: Yan Jie , Cai Yu-Fang , Dai Shan-Jun , He Xiao-Jin , Sun Ying-Pu , Cao Yun-Xia , Qiao Jie , Chian Ri-Cheng 
Published: July 2022

Abstract

Objective:
There are few reports of live births from heterotopic transplantation of frozen-thawed ovarian tissue. The purpose of this study is to assess the follicular development in the frozen-thawed ovarian tissues following heterotopic transplantation in both female and male bodies.

Methods:
Cluster of differentiation 1 (CD1) mice (6-8 weeks) were used in this study as ovarian tissue donors and foster mothers for embryo transfer. Sperm from CD1 male mice were used for insemination by intracytoplasmic sperm injection (ICSI). Nude severe combined immunodeficiency mice (8 weeks) were employed as recipients of ovarian tissue transplantation. The frozen-thawed ovarian tissues were transplanted to 4 sites on each mouse, female and male, subcutaneously. After 3 months, both female and male mice were injected with 5.0 IU gonadotropins intraperitoneally. Post 48 hours of injection, the mouse was killed for ovarian transplant collection. Only fully grown oocytes with contacted cumulus cells (cumulus-oocyte complexes) were then selected for maturation in vitro. In vitro matured oocytes were inseminated with fresh sperm by ICSI, and the developed blastocysts were frozen using the vitrification method and stored until embryo transfer. After thawing, the thawed blastocysts were incubated for at least 2 hours before the transfer. The foster mice mothers mated with vasectomised male 3 days previously. Live birth was monitored at 19 days after transfer, and the resulted offspring was raised for fertility test.

Results:
The relatively high recovery rates of the transplanted ovarian tissues were collected in both frozen-thawed and fresh ovarian tissue transplants from both female and male bodies. The fully grown immature oocytes became mature in vitro and the fertilized zygotes developed to blastocyst stage. There are no differences between frozen-thawed and fresh ovarian transplants in term of oocyte quality and embryo development to blastocyst rates. Nineteen-day post-transfer, 3 foster mothers from the frozen-thawed ovarian tissue transplant group delivered 13 pups and the 4 foster mothers of the fresh ovarian tissue transplant group delivered 12 live pups. The produced offspring were normal in appearance and grew healthy and fertile.

Conclusions:
Our results attest that the follicles can survive and develop in the frozen-thawed ovarian tissues following the subcutaneous transplant to adult male mouse's body regardless of basal endocrinal environment. Those fully grown oocytes can produce healthy and fertile offspring which will provide the possibility for further mechanistic understanding of endocrinology of folliculogenesis.
Chinese expert consensus on clinical practice of female fertility preservation
Authors: Li Wen , Chian Ri-Cheng ,   on behalf of the Fertility Preservation Committee of Chinese Maternal and Child Association
Published: July 2022

Abstract
Many female fertility preservation-related technologies have recently been developed in response to increasing demand for such treatments. To establish standard practices of female fertility preservation in China, the Chinese Maternal and Child Health Association Affiliated Fertility Preservation Professional Committee assembled specialists to construct a consensus, referring to the current clinical guidelines of some countries combined with clinical practice and expert opinions. The consensus includes two parts: (1) indications for female fertility preservation and related techniques, in which we sought to be inclusive regarding the indications for fertility preservation; and (2) practical guidance for the clinical application of the female fertility preservation technologies.
Gastroschisis at the León University Hospital, Nicaragua
Authors: Bucardo Dania María Pastora , Ramírez Paula Andrea Pimienta 
Published: July 2022

Abstract

Objective:
The prevalence of midline birth defects, such as gastroschisis, has increased worldwide, over the last few decades. This study aims to explore the prevalence, maternal epidemiological characteristics, and natural history of neonates affected by gastroschisis at the University Hospital of León city, Nicaragua.

Methods:
Data were collected from the birth defect surveillance system of the Hospital Oscar Danilo Rosales (HEODRA). The analysis included all pregnancies that had gastroschisis complications between January 1 and December 31, 2020. The prevalence of gastroschisis was calculated according to maternal age. The mothers were interviewed, and the clinical records of the newborns were reviewed.

Results:
Among the 4,460 deliveries included in this study, four cases of gastroschisis were identified, including three live births and one stillbirth. The gastroschisis rate was 8.9 per 10,000 live births (95% confidence interval [CI]: 0.18–17.8). The prevalence among mothers younger than 20 years and those older than 20 years was 26.4 (95% CI: –3.43 to 56.25) and 3.01 (95% CI: 2.89–8.90)/10,000 births, respectively. Mothers of gastroschisis-affected fetuses were of rural origin (n = 3), had normal body mass indexes (n = 3), were exposed to tobacco and wood smoke (n = 2), and one was exposed to pesticides during the periconceptional period. Primary closure of the gastroschisis was performed on one patient, and complex gastroschisis for intestinal perforation was observed in another patient. The mean hospitalization duration was 33 days, and two patients were discharged alive.

Conclusions:
Gastroschisis was a significant birth defect among children delivered at HEODRA in 2020. Its prevalence in Nicaragua was higher than that in other countries in the region. All complicated pregnancies were young women with unplanned pregnancies, from rural areas, with exposure to secondhand smoke, and without vitamin supplements before or during the first trimester of pregnancy. Only 67% of infants survived after hospital discharge.
Microcephaly prevalence after the 2015 to 2016 Zika outbreak in Tangará da Serra, Brazil: a population-based study
Authors: da Silva Juliana Herrero , Terças-Trettel Ana Claudia Pereira , Boquett Juliano André , Franca Giovanny Vinicius Araujo , Cardoso-dos-Santos Augusto Cesar , Atanaka Marina , Oliveira Marcelo Zagonel , Terra Anna Pires , Vivi Viviane Karoline , de Oliveira Lucia Andreia Nunes , Schaedler Lucia , Alves Ronaldo Fernandes Santos , Schuler-Faccini Lavinia 
Published: July 2022

Abstract

Objective:
Prenatal infection with the Zika virus (ZIKV) can lead to congenital Zika syndrome (CZS), characterized by microcephaly and brain injury. However, there are questions regarding the prevalence of microcephaly/CZS after the ZIKV outbreak in defined geographic areas. This study aimed to identify adverse outcomes in live births of fetuses exposed in utero to the ZIKV, compared to unexposed births, as well as maternal sociodemographic, delivery, and birth characteristics.

Methods:
Here, we conducted a cross-sectional observational study to investigate the characteristics of all live births in the city of Tangará da Serra, Mato Grosso, Brazil, in 2016, after the outbreak of ZIKV infection in late 2015. All live births of children to women residing in the municipality of Tangará da Serra between January 1 and December 31, 2016, were evaluated, and head circumference was measured at birth and after 24 hours. Children born with microcephaly or a maternal history of confirmed or suspected prenatal ZIKV infection were evaluated by a multidisciplinary team. The outcomes of the exposed and non-exposed children were compared. Prevalence ratios and their respective 95% confidence intervals were calculated for sociodemographic, delivery, and live birth characteristics.

Results:
Of 1,441 live births, 106 (7.3%) were from mothers with confirmed or highly probable exposure to ZIKV. The prevalence of severe congenital microcephaly (41.7/10,000) in Tangará da Serra in 2016 was ten-fold higher than that in Latin America before 2015.

Conclusion:
This study may serve as a model to investigate possible outbreaks of infections in a defined geographical space in the future.
Liquiritin ameliorates metabolic and endocrine alterations in a mouse model of polycystic ovary syndrome
Authors: Li Zhi , Liu Yan , Liu Hai-Ou , Wu Zhi-Yong , Xu Cong-Jian , Zhang Fei-Fei 
Published: July 2022

Abstract

Objective:
Altered bile acid transformation induces low-grade chronic inflammation and may play an important role in the pathophysiology of polycystic ovary syndrome (PCOS). Liquiritincan regulate bile acid metabolism and anti-inflammatory properties; however, limited information is available regarding its therapeutic potential in PCOS.

Methods:
Female C57BL/6 mice were randomly assigned into four groups (n = 6 mice/group): the control, letrozole or dehydroepiandrosterone-induced PCOS groups, PCOS + 20 mg/kg liquiritin group, and control + liquiritin groups. After 21 days of treatment, the mice were euthanized, and the associated metabolism indications were investigated. Ovarian histological examinations were performed, and serum hormone concentration was measured. The expression of key genes involved in steroid hormone synthesis, ovarian follicle development, and ovulation was assessed.

Results:
Liquiritin reduced fasting blood glucose levels and increased insulin sensitivity compared to the PCOS group. Liquiritin also significantly decreased serum levels of total testosterone (P < 0.001) and dehydroepiandrosterone sulfate (P < 0.05) in the PCOS group. Histomorphological inspection of ovaries from the liquiritin group revealed fewer cystic dilated follicles than in the PCOS group. Moreover, liquiritinsignificantly (P < 0.01) decreased Cyp17a1, Cyp19a1, Fshr, Hsd3b2, Runx2, and Ccn2 mRNA expression compared to letrozole-induced PCOS.

Conclusion:
Liquiritin may be safe and helpful in ameliorating PCOS-associated hyperandrogenemia and hyperglycemia. However, clinical trials investigating different liquiritin dosages are needed to confirm these findings.
Susceptibilities of pus cultures in diabetic foot patients: an observational study
Authors: Asghar Muhammad Sohaib , Parkash Om , Sagar  , Singh Manjeet , Kumar Sumeet , Kumar Karan , Mehdi Asad , Khan Farmanullah , Chughtai Najeebullah , Ahmed Nisar 
Published: July 2022

Objectives:
The aim of our study is to evaluate the organisms growing into the pus cultures of diabetic foot patients and to further document their sensitivity and resistance toward antibiotics.

Methods:
This study was conducted among admitted patients in the department of Medicine and Orthopedics, of a tertiary care hospital, including patients with known diabetes mellitus for the last 5 years, with a foot ulcer of any grade and a positive culture for bacterial growth. Cultures showing fungal growth were excluded.

Results:
There were 139 participants in our study with a mean age of 55.27 years, and mean HbA1c levels of 9.51%, 101 (72.66%) patients were males and 38 (27.33%) females. According to the Wagner classification; there were 48 (34.53%) patients in grade 2, 27 (19.42%) patients in grade 3, 54 (38.84%) patients in grade 4, and 10 (7.19%) patients in grade 5. The most frequently isolated bacteria were Staphylococcus aureus (43.16%), methicillin-resistant staphylococcal aureus (5.03%), Enterococcus species (5.75%), Streptococcus species (7.91%), Pseudomonas aeruginosa (20.14%), Escherichia coli (24.46%), Klebsiella pneumonia 7 (5.03%), Proteus vulgaris 6 (4.31%), Proteus mirabilis 3 (2.15%), Enterobacter species 7 (5.03%), Morganella morganii 2 (1.43%), and Acinetobacter 7 (5.03%). Amikacin was the most susceptible antibiotic to the majority of the microorganisms, followed by gentamicin, piperacillin/tazobactam, vancomycin chloramphenicol, and clindamycin. Among the resistant antibiotics, penicillins and cephalosporins were the notable ones.

Conclusions:
This study will decipher the bacteriological profiles among patients of diabetic foot ulcers according to their susceptibility and might be helpful to provide effective treatment.
Acute kidney injury development in polytrauma and the safety of early repeated contrast studies: A retrospective cohort study
Authors: Giles Thomas , Weaver Natasha , Varghese Adrian , Way Teagan L. , Abel Christian , Choi Peter , Briggs Gabrielle D. , Balogh Zsolt J. 
Published: July 2022

BACKGROUND
The role of repeat intravenous contrast doses beyond initial contrast imaging in the development of acute kidney injury (AKI) for multiple injury patients admitted to the intensive care unit (ICU) is not fully understood. We hypothesized that additional contrast doses are potentially modifiable risk factors for worse outcomes.

METHODS
An 8-year retrospective study of our institutional prospective postinjury multiple organ failure database was performed. Adult ICU admissions that survived >72 hours with Injury Severity Score (ISS) of >15 were included. Patients were grouped based on number of repeat contrast studies received after initial imaging. Initial vital signs, resuscitation data, and laboratory parameters were collected. Primary outcome was AKI (Kidney Disease: Improving Global Outcomes criteria), and secondary outcomes included contrast-induced acute kidney injury (CI-AKI; >25% or >44 μmol/L increase in creatinine within 72 hours of contrast administration), multiple organ failure, length of stay, and mortality.

RESULTS
Six-hundred sixty-three multiple injury patients (age, 45.3 years [SD, 9.1 years]; males, 75%; ISS, 25 (interquartile range, 20–34); mortality, 5.4%) met the inclusion criteria. The incidence of AKI was 13.4%, and CI-AKI was 14.5%. Multivariate analysis revealed that receiving additional contrast doses within the first 72 hours was not associated with AKI (odds ratio, 1.33; confidence interval, 0.80–2.21; p = 0.273). Risk factors for AKI included higher ISS (p < 0.0007), older age (p = 0.0109), higher heart rate (p = 0.0327), lower systolic blood pressure (p = 0.0007), and deranged baseline blood results including base deficit (p = 0.0042), creatinine (p < 0.0001), lactate (p < 0.0001), and hemoglobin (p = 0.0085). Acute kidney injury was associated with worse outcomes (ICU length of stay: 8 vs. 3 days, p < 0.0001; mortality: 16% vs. 3.8%, p < 0.0001; MOF: 42% vs. 6.6%, p < 0.0001).

CONCLUSION
There is a limited role of repeat contrast administration in AKI development in ICU-admitted multiple injury patients. The clinical significance of CI-AKI is likely overestimated, and it should not compromise essential secondary imaging from the ICU. Further prospective studies are needed to verify our results.

LEVEL OF EVIDENCE
Therapeutic/Care Management; Level III.
Presumptive Idiopathic Intracranial Hypertension Based on Neuroimaging Findings: A Referral Pattern Study
Authors: Aung Andre B. , Chen Benson S. , Wicks Jaime , Bruce Beau B. , Meyer Benjamin I. , Dattilo Michael , Kedar Sachin , Saindane Amit , Newman Nancy J. , Biousse Valérie 
Published: July 2022

Background:
Radiologic findings of intracranial hypertension (RAD-IH) are common in idiopathic intracranial hypertension (IIH) patients. Paralleling the increasing rates of obesity, the burden of IIH is growing. Urgent neuro-ophthalmology consultations for possible IIH in patients with incidentally detected RAD-IH are increasing, with many patients receiving unnecessary lumbar punctures (LPs) and treatments. This retrospective observational study aimed to determine the prevalence of neuro-ophthalmology consultations for RAD-IH, rate of funduscopic examination by referring providers, prevalence of papilledema, outcomes after neuro-ophthalmic evaluation, and rates of misdiagnosis.

Methods:
Records of 1,262 consecutive new patients seen in one neuro-ophthalmology clinic from January 2019 to January 2020 were reviewed. We identified patients who were: 1) referred with concern for IIH because of findings of RAD-IH; 2) referred for “papilledema”; 3) referred with a diagnosis of IIH; and 4) referred for spontaneous cranial cerebrospinal fluid (CSF) leaks. In addition to basic demographic profiles for all groups, detailed information was collected for patients referred solely for RAD-IH, including referral patterns, prior history of IIH, previous LPs, prior medical or surgical treatment(s), risk factors for increased intracranial pressure (ICP), presenting symptoms, radiologic features observed on neuroimaging, and final disposition. When available, the neuroimaging was reviewed by an expert neuroradiologist.

Results:
Of 1,262 consecutive new patients, 66 (5%) were referred specifically for RAD-IH; most referrals came from neurologists (58%); 8/66 (12%) patients had papilledema; 16/66 (24%) patients had prior LP and 13/66 (20%) were already treated based on MRI findings; and 22/66 (33%) patients had ≤2 RAD-IH. Only 34/66 (52%) of patients referred for RAD-IH had prior funduscopic examinations. We confirmed papilledema in 26/82 (32%) patients referred for “papilledema.” Only 29/83 (35%) patients referred with a diagnosis of IIH had active papilledema, and 3/16 (19%) patients with spontaneous CSF leaks had papilledema. In total, 247/1,262 (20%) new patients were referred to our clinic over 1 year with concern for IIH, among whom only 66 (27%) were confirmed to have active IIH with papilledema.

Conclusions:
One in 5 new patient referrals seen in our neuro-ophthalmology clinic were referred because of concern for increased ICP, but only 1/4 had active papilledema. Most patients referred for isolated RAD-IH do not have papilledema, many having undergone unnecessary LPs and treatments. The burden of these “rule-out IIH” consultations is overwhelming and will only continue to increase with the concurrent rise of obesity and IIH, straining the already limited neuro-ophthalmologic resources available in the US.
Tele–Neuro-Ophthalmology Utilization, Availability, and Attitudes: Update 1 Year Into the COVID-19 Public Health Emergency
Authors: Moss Heather E. , Lai Kevin E. , Ko Melissa W. 
Published: July 2022

Background:
Telehealth was rapidly adopted early in the COVID-19 pandemic as a way to provide medical care while reducing risk of SARS-CoV2 transmission. Since then, telehealth utilization has evolved differentially according to subspecialty. This study assessed changes in neuro-ophthalmology during the first year of the COVID-19 pandemic.

Methods:
Telehealth utilization and opinions pre-COVID-19, early pandemic (spring 2020), and 1 year later (spring 2021) were surveyed among practicing neuro-ophthalmologists in and outside the United States using an online platform. Demographics, self-reported utilization, perceived benefits, barriers, and examination suitability were collected over a 2-week period in May 2021.

Results:
A total of 135 practicing neuro-ophthalmologists (81.5% United States, 47.4% females, median age 45–54 years) completed the survey. The proportion of participants using video visits remained elevated during COVID + 1 year (50.8%) compared with pre-COVID (6%, P < 0.0005, McNemar), although decreased compared with early COVID (67%, P < 0.0005). Video visits were the most commonly used methodology. The proportion of participants using remote testing (42.2% vs 46.2%), virtual second opinions (14.5% vs 11.9%, P = 0.45), and eConsults (13.5% vs 16.2%, P = 0.38) remained similar between early and COVID + 1 year (P = 0.25). The majority selected increased access to care, better continuity of care, and enhanced patient appointment efficiency as benefits, whereas reimbursement, liability, disruption of in-person clinic flow, limitations of video examinations, and patient technology use were barriers. Many participants deemed many neuro-ophthalmic examination elements unsuitable when collected during a live video session, although participants believed some examination components could be evaluated adequately through a review of ancillary testing or outside records.

Conclusions:
One year into the COVID-19 pandemic, neuro-ophthalmologists maintained telemedicine utilization at rates higher than prepandemic levels. Tele–neuro-ophthalmology remains a valuable tool in augmenting patient care.
Peripapillary Vessel Density in Relation to Optic Disc Drusen: A Multimodal Optical Coherence Tomography Study
Authors: Lykkebirk Lea , Wessel Lindberg Anne-Sofie , Karlesand Isabelle , Heiberg Mathias , Malmqvist Lasse , Hamann Steffen 
Published: July 2022

Background:
Optic disc drusen (ODD) are acellular calcified deposits within the optic nerve head known to cause visual field defects. An emerging gold standard for the diagnosis of ODD is enhanced depth imaging optical coherence tomography (EDI-OCT). The presence of ODD affects the adjacent peripapillary vasculature, which can be visualized using OCT angiography (OCTA). This study investigates the association between peripapillary vessel density and anatomical ODD location and volume using a newly developed method of multimodal OCT.

Methods:
A case–control study with 16 patients diagnosed with ODD in the period 2008–2017 and 24 healthy controls. All patients and controls had EDI-OCT, OCTA, and demographic data collected. Using EDI-OCT and the medical imaging segmentation tool ITK-SNAP, 3-dimensional (3D) visualization of ODD in patients were created. ODD 3D visualization and corresponding OCTA scans were superimposed, making it possible to correlate ODD volume to the peripapillary vessel density in the corresponding modified Garway-Heath segments of the optic disc.

Results:
We found that mean peripapillary vessel density across all modified Garway-Heath segments were lower in ODD patients compared with controls with significant reduction of peripapillary vessel density in the superior segment (P = 0.03) and globally (P = 0.05). A significant inverse proportionality between ODD volume and peripapillary vessel density in the corresponding segment was seen (P = 0.002).

Conclusions:
We found a reduced peripapillary vessel density in regions with close anatomical proximity to ODD and inverse proportionality between ODD volume and peripapillary vessel density.
A Fungal Foray in an NHP Gut Microbiome
Authors: James Steve , Parker Aimee , Purse Catherine , Baker Dave , Telatin Andrea , Funnell Simon , Carding Simon 
Published: July 2022

The cynomolgus macaque, Macaca fascicularis, is a non-human primate (NHP) widely used in biomedical research as it shares behavioural, genetic, immunological and physiological similarities with humans. These similarities may extend to the enteric microbiome, with some microbial taxa common to both humans and NHPs. However, to date, the majority of these microbial surveys have focused on the prokaryome, and have largely ignored or overlooked the NHP gut mycobiome.
To address this shortfall, we have undertaken a region-by-region taxonomic survey of the cynomolgus intestinal mycobiota, from duodenum to distal colon, of ten captive animals of differing age. Using a high-throughput ITS1 amplicon sequencing-based approach, we found that fungi from the Ascomycota phylum dominate the cynomolgus enteric mycobiota. The budding yeast genus Kazachstania was most abundant, with K. pintolopesii and K. telluris highly prevalent, and the predominant species in many of the intestinal samples. However, while K. pintolopesii was present throughout the primate GI tract, K. telluris was found mainly in the small intestine.
In this study, K. pintolopesii was identified as the dominant enteric fungus in captive cynomolgus macaques. This contrasts with humans, where Candida albicans is a common member of the intestinal microbiota. To our knowledge, this is the first time K. pintolopesii has been identified as a primate gut commensal.